5243 lines
148 KiB
C
5243 lines
148 KiB
C
/*
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* Copyright © 2012-2014 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Eugeni Dodonov <eugeni.dodonov@intel.com>
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* Daniel Vetter <daniel.vetter@ffwll.ch>
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*
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*/
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#include <linux/pm_runtime.h>
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#include <linux/vgaarb.h>
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#include <drm/drm_print.h>
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#include "i915_drv.h"
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#include "i915_irq.h"
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#include "intel_cdclk.h"
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#include "intel_combo_phy.h"
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#include "intel_crt.h"
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#include "intel_csr.h"
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#include "intel_dp.h"
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#include "intel_dpio_phy.h"
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#include "intel_drv.h"
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#include "intel_hotplug.h"
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#include "intel_sideband.h"
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/**
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* DOC: runtime pm
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*
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* The i915 driver supports dynamic enabling and disabling of entire hardware
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* blocks at runtime. This is especially important on the display side where
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* software is supposed to control many power gates manually on recent hardware,
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* since on the GT side a lot of the power management is done by the hardware.
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* But even there some manual control at the device level is required.
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*
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* Since i915 supports a diverse set of platforms with a unified codebase and
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* hardware engineers just love to shuffle functionality around between power
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* domains there's a sizeable amount of indirection required. This file provides
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* generic functions to the driver for grabbing and releasing references for
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* abstract power domains. It then maps those to the actual power wells
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* present for a given platform.
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*/
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static intel_wakeref_t intel_runtime_pm_get_raw(struct drm_i915_private *i915);
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static void
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__intel_runtime_pm_put(struct drm_i915_private *i915, intel_wakeref_t wref,
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bool wakelock);
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#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
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static void
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intel_runtime_pm_put_raw(struct drm_i915_private *i915, intel_wakeref_t wref);
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#else
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static inline void intel_runtime_pm_put_raw(struct drm_i915_private *i915,
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intel_wakeref_t wref)
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{
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__intel_runtime_pm_put(i915, -1, false);
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}
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#endif
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#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
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#include <linux/sort.h>
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#define STACKDEPTH 8
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static noinline depot_stack_handle_t __save_depot_stack(void)
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{
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unsigned long entries[STACKDEPTH];
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struct stack_trace trace = {
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.entries = entries,
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.max_entries = ARRAY_SIZE(entries),
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.skip = 1,
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};
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save_stack_trace(&trace);
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if (trace.nr_entries &&
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trace.entries[trace.nr_entries - 1] == ULONG_MAX)
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trace.nr_entries--;
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return depot_save_stack(&trace, GFP_NOWAIT | __GFP_NOWARN);
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}
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static void __print_depot_stack(depot_stack_handle_t stack,
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char *buf, int sz, int indent)
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{
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unsigned long entries[STACKDEPTH];
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struct stack_trace trace = {
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.entries = entries,
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.max_entries = ARRAY_SIZE(entries),
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};
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depot_fetch_stack(stack, &trace);
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snprint_stack_trace(buf, sz, &trace, indent);
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}
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static void init_intel_runtime_pm_wakeref(struct drm_i915_private *i915)
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{
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struct i915_runtime_pm *rpm = &i915->runtime_pm;
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spin_lock_init(&rpm->debug.lock);
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}
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static noinline depot_stack_handle_t
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track_intel_runtime_pm_wakeref(struct drm_i915_private *i915)
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{
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struct i915_runtime_pm *rpm = &i915->runtime_pm;
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depot_stack_handle_t stack, *stacks;
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unsigned long flags;
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if (!HAS_RUNTIME_PM(i915))
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return -1;
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stack = __save_depot_stack();
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if (!stack)
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return -1;
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spin_lock_irqsave(&rpm->debug.lock, flags);
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if (!rpm->debug.count)
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rpm->debug.last_acquire = stack;
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stacks = krealloc(rpm->debug.owners,
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(rpm->debug.count + 1) * sizeof(*stacks),
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GFP_NOWAIT | __GFP_NOWARN);
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if (stacks) {
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stacks[rpm->debug.count++] = stack;
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rpm->debug.owners = stacks;
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} else {
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stack = -1;
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}
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spin_unlock_irqrestore(&rpm->debug.lock, flags);
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return stack;
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}
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static void untrack_intel_runtime_pm_wakeref(struct drm_i915_private *i915,
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depot_stack_handle_t stack)
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{
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struct i915_runtime_pm *rpm = &i915->runtime_pm;
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unsigned long flags, n;
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bool found = false;
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if (unlikely(stack == -1))
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return;
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spin_lock_irqsave(&rpm->debug.lock, flags);
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for (n = rpm->debug.count; n--; ) {
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if (rpm->debug.owners[n] == stack) {
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memmove(rpm->debug.owners + n,
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rpm->debug.owners + n + 1,
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(--rpm->debug.count - n) * sizeof(stack));
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found = true;
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break;
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}
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}
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spin_unlock_irqrestore(&rpm->debug.lock, flags);
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if (WARN(!found,
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"Unmatched wakeref (tracking %lu), count %u\n",
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rpm->debug.count, atomic_read(&rpm->wakeref_count))) {
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char *buf;
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buf = kmalloc(PAGE_SIZE, GFP_NOWAIT | __GFP_NOWARN);
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if (!buf)
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return;
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__print_depot_stack(stack, buf, PAGE_SIZE, 2);
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DRM_DEBUG_DRIVER("wakeref %x from\n%s", stack, buf);
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stack = READ_ONCE(rpm->debug.last_release);
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if (stack) {
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__print_depot_stack(stack, buf, PAGE_SIZE, 2);
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DRM_DEBUG_DRIVER("wakeref last released at\n%s", buf);
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}
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kfree(buf);
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}
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}
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static int cmphandle(const void *_a, const void *_b)
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{
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const depot_stack_handle_t * const a = _a, * const b = _b;
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if (*a < *b)
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return -1;
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else if (*a > *b)
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return 1;
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else
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return 0;
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}
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static void
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__print_intel_runtime_pm_wakeref(struct drm_printer *p,
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const struct intel_runtime_pm_debug *dbg)
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{
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unsigned long i;
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char *buf;
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buf = kmalloc(PAGE_SIZE, GFP_NOWAIT | __GFP_NOWARN);
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if (!buf)
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return;
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if (dbg->last_acquire) {
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__print_depot_stack(dbg->last_acquire, buf, PAGE_SIZE, 2);
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drm_printf(p, "Wakeref last acquired:\n%s", buf);
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}
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if (dbg->last_release) {
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__print_depot_stack(dbg->last_release, buf, PAGE_SIZE, 2);
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drm_printf(p, "Wakeref last released:\n%s", buf);
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}
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drm_printf(p, "Wakeref count: %lu\n", dbg->count);
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sort(dbg->owners, dbg->count, sizeof(*dbg->owners), cmphandle, NULL);
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for (i = 0; i < dbg->count; i++) {
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depot_stack_handle_t stack = dbg->owners[i];
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unsigned long rep;
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rep = 1;
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while (i + 1 < dbg->count && dbg->owners[i + 1] == stack)
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rep++, i++;
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__print_depot_stack(stack, buf, PAGE_SIZE, 2);
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drm_printf(p, "Wakeref x%lu taken at:\n%s", rep, buf);
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}
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kfree(buf);
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}
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static noinline void
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__untrack_all_wakerefs(struct intel_runtime_pm_debug *debug,
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struct intel_runtime_pm_debug *saved)
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{
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*saved = *debug;
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debug->owners = NULL;
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debug->count = 0;
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debug->last_release = __save_depot_stack();
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}
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static void
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dump_and_free_wakeref_tracking(struct intel_runtime_pm_debug *debug)
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{
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struct drm_printer p;
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if (!debug->count)
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return;
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p = drm_debug_printer("i915");
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__print_intel_runtime_pm_wakeref(&p, debug);
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kfree(debug->owners);
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}
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static noinline void
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__intel_wakeref_dec_and_check_tracking(struct drm_i915_private *i915)
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{
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struct i915_runtime_pm *rpm = &i915->runtime_pm;
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struct intel_runtime_pm_debug dbg = {};
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unsigned long flags;
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if (!atomic_dec_and_lock_irqsave(&rpm->wakeref_count,
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&rpm->debug.lock,
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flags))
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return;
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__untrack_all_wakerefs(&rpm->debug, &dbg);
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spin_unlock_irqrestore(&rpm->debug.lock, flags);
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dump_and_free_wakeref_tracking(&dbg);
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}
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static noinline void
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untrack_all_intel_runtime_pm_wakerefs(struct drm_i915_private *i915)
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{
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struct i915_runtime_pm *rpm = &i915->runtime_pm;
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struct intel_runtime_pm_debug dbg = {};
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unsigned long flags;
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spin_lock_irqsave(&rpm->debug.lock, flags);
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__untrack_all_wakerefs(&rpm->debug, &dbg);
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spin_unlock_irqrestore(&rpm->debug.lock, flags);
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dump_and_free_wakeref_tracking(&dbg);
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}
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void print_intel_runtime_pm_wakeref(struct drm_i915_private *i915,
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struct drm_printer *p)
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{
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struct intel_runtime_pm_debug dbg = {};
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do {
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struct i915_runtime_pm *rpm = &i915->runtime_pm;
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unsigned long alloc = dbg.count;
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depot_stack_handle_t *s;
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spin_lock_irq(&rpm->debug.lock);
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dbg.count = rpm->debug.count;
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if (dbg.count <= alloc) {
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memcpy(dbg.owners,
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rpm->debug.owners,
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dbg.count * sizeof(*s));
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}
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dbg.last_acquire = rpm->debug.last_acquire;
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dbg.last_release = rpm->debug.last_release;
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spin_unlock_irq(&rpm->debug.lock);
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if (dbg.count <= alloc)
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break;
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s = krealloc(dbg.owners,
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dbg.count * sizeof(*s),
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GFP_NOWAIT | __GFP_NOWARN);
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if (!s)
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goto out;
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dbg.owners = s;
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} while (1);
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__print_intel_runtime_pm_wakeref(p, &dbg);
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out:
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kfree(dbg.owners);
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}
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#else
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static void init_intel_runtime_pm_wakeref(struct drm_i915_private *i915)
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{
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}
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static depot_stack_handle_t
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track_intel_runtime_pm_wakeref(struct drm_i915_private *i915)
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{
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return -1;
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}
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static void untrack_intel_runtime_pm_wakeref(struct drm_i915_private *i915,
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intel_wakeref_t wref)
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{
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}
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static void
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__intel_wakeref_dec_and_check_tracking(struct drm_i915_private *i915)
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{
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atomic_dec(&i915->runtime_pm.wakeref_count);
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}
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static void
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untrack_all_intel_runtime_pm_wakerefs(struct drm_i915_private *i915)
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{
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}
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#endif
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static void
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intel_runtime_pm_acquire(struct drm_i915_private *i915, bool wakelock)
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{
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struct i915_runtime_pm *rpm = &i915->runtime_pm;
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if (wakelock) {
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atomic_add(1 + INTEL_RPM_WAKELOCK_BIAS, &rpm->wakeref_count);
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assert_rpm_wakelock_held(i915);
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} else {
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atomic_inc(&rpm->wakeref_count);
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assert_rpm_raw_wakeref_held(i915);
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}
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}
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static void
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intel_runtime_pm_release(struct drm_i915_private *i915, int wakelock)
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{
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struct i915_runtime_pm *rpm = &i915->runtime_pm;
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if (wakelock) {
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assert_rpm_wakelock_held(i915);
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atomic_sub(INTEL_RPM_WAKELOCK_BIAS, &rpm->wakeref_count);
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} else {
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assert_rpm_raw_wakeref_held(i915);
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}
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__intel_wakeref_dec_and_check_tracking(i915);
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}
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bool intel_display_power_well_is_enabled(struct drm_i915_private *dev_priv,
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enum i915_power_well_id power_well_id);
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const char *
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intel_display_power_domain_str(enum intel_display_power_domain domain)
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{
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switch (domain) {
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case POWER_DOMAIN_DISPLAY_CORE:
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return "DISPLAY_CORE";
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case POWER_DOMAIN_PIPE_A:
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return "PIPE_A";
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case POWER_DOMAIN_PIPE_B:
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return "PIPE_B";
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case POWER_DOMAIN_PIPE_C:
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return "PIPE_C";
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case POWER_DOMAIN_PIPE_A_PANEL_FITTER:
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return "PIPE_A_PANEL_FITTER";
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case POWER_DOMAIN_PIPE_B_PANEL_FITTER:
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return "PIPE_B_PANEL_FITTER";
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case POWER_DOMAIN_PIPE_C_PANEL_FITTER:
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return "PIPE_C_PANEL_FITTER";
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case POWER_DOMAIN_TRANSCODER_A:
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return "TRANSCODER_A";
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case POWER_DOMAIN_TRANSCODER_B:
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return "TRANSCODER_B";
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case POWER_DOMAIN_TRANSCODER_C:
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return "TRANSCODER_C";
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case POWER_DOMAIN_TRANSCODER_EDP:
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return "TRANSCODER_EDP";
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case POWER_DOMAIN_TRANSCODER_EDP_VDSC:
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return "TRANSCODER_EDP_VDSC";
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case POWER_DOMAIN_TRANSCODER_DSI_A:
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return "TRANSCODER_DSI_A";
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case POWER_DOMAIN_TRANSCODER_DSI_C:
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return "TRANSCODER_DSI_C";
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case POWER_DOMAIN_PORT_DDI_A_LANES:
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return "PORT_DDI_A_LANES";
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case POWER_DOMAIN_PORT_DDI_B_LANES:
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return "PORT_DDI_B_LANES";
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case POWER_DOMAIN_PORT_DDI_C_LANES:
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return "PORT_DDI_C_LANES";
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case POWER_DOMAIN_PORT_DDI_D_LANES:
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return "PORT_DDI_D_LANES";
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case POWER_DOMAIN_PORT_DDI_E_LANES:
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return "PORT_DDI_E_LANES";
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case POWER_DOMAIN_PORT_DDI_F_LANES:
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return "PORT_DDI_F_LANES";
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case POWER_DOMAIN_PORT_DDI_A_IO:
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return "PORT_DDI_A_IO";
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case POWER_DOMAIN_PORT_DDI_B_IO:
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return "PORT_DDI_B_IO";
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case POWER_DOMAIN_PORT_DDI_C_IO:
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return "PORT_DDI_C_IO";
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case POWER_DOMAIN_PORT_DDI_D_IO:
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return "PORT_DDI_D_IO";
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case POWER_DOMAIN_PORT_DDI_E_IO:
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return "PORT_DDI_E_IO";
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|
case POWER_DOMAIN_PORT_DDI_F_IO:
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return "PORT_DDI_F_IO";
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case POWER_DOMAIN_PORT_DSI:
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return "PORT_DSI";
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case POWER_DOMAIN_PORT_CRT:
|
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return "PORT_CRT";
|
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case POWER_DOMAIN_PORT_OTHER:
|
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return "PORT_OTHER";
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case POWER_DOMAIN_VGA:
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return "VGA";
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|
case POWER_DOMAIN_AUDIO:
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return "AUDIO";
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|
case POWER_DOMAIN_AUX_A:
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return "AUX_A";
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case POWER_DOMAIN_AUX_B:
|
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return "AUX_B";
|
|
case POWER_DOMAIN_AUX_C:
|
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return "AUX_C";
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|
case POWER_DOMAIN_AUX_D:
|
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return "AUX_D";
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|
case POWER_DOMAIN_AUX_E:
|
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return "AUX_E";
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|
case POWER_DOMAIN_AUX_F:
|
|
return "AUX_F";
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|
case POWER_DOMAIN_AUX_IO_A:
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return "AUX_IO_A";
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|
case POWER_DOMAIN_AUX_TBT1:
|
|
return "AUX_TBT1";
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|
case POWER_DOMAIN_AUX_TBT2:
|
|
return "AUX_TBT2";
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|
case POWER_DOMAIN_AUX_TBT3:
|
|
return "AUX_TBT3";
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|
case POWER_DOMAIN_AUX_TBT4:
|
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return "AUX_TBT4";
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|
case POWER_DOMAIN_GMBUS:
|
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return "GMBUS";
|
|
case POWER_DOMAIN_INIT:
|
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return "INIT";
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case POWER_DOMAIN_MODESET:
|
|
return "MODESET";
|
|
case POWER_DOMAIN_GT_IRQ:
|
|
return "GT_IRQ";
|
|
default:
|
|
MISSING_CASE(domain);
|
|
return "?";
|
|
}
|
|
}
|
|
|
|
static void intel_power_well_enable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
DRM_DEBUG_KMS("enabling %s\n", power_well->desc->name);
|
|
power_well->desc->ops->enable(dev_priv, power_well);
|
|
power_well->hw_enabled = true;
|
|
}
|
|
|
|
static void intel_power_well_disable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
DRM_DEBUG_KMS("disabling %s\n", power_well->desc->name);
|
|
power_well->hw_enabled = false;
|
|
power_well->desc->ops->disable(dev_priv, power_well);
|
|
}
|
|
|
|
static void intel_power_well_get(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
if (!power_well->count++)
|
|
intel_power_well_enable(dev_priv, power_well);
|
|
}
|
|
|
|
static void intel_power_well_put(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
WARN(!power_well->count, "Use count on power well %s is already zero",
|
|
power_well->desc->name);
|
|
|
|
if (!--power_well->count)
|
|
intel_power_well_disable(dev_priv, power_well);
|
|
}
|
|
|
|
/**
|
|
* __intel_display_power_is_enabled - unlocked check for a power domain
|
|
* @dev_priv: i915 device instance
|
|
* @domain: power domain to check
|
|
*
|
|
* This is the unlocked version of intel_display_power_is_enabled() and should
|
|
* only be used from error capture and recovery code where deadlocks are
|
|
* possible.
|
|
*
|
|
* Returns:
|
|
* True when the power domain is enabled, false otherwise.
|
|
*/
|
|
bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
struct i915_power_well *power_well;
|
|
bool is_enabled;
|
|
|
|
if (dev_priv->runtime_pm.suspended)
|
|
return false;
|
|
|
|
is_enabled = true;
|
|
|
|
for_each_power_domain_well_reverse(dev_priv, power_well, BIT_ULL(domain)) {
|
|
if (power_well->desc->always_on)
|
|
continue;
|
|
|
|
if (!power_well->hw_enabled) {
|
|
is_enabled = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return is_enabled;
|
|
}
|
|
|
|
/**
|
|
* intel_display_power_is_enabled - check for a power domain
|
|
* @dev_priv: i915 device instance
|
|
* @domain: power domain to check
|
|
*
|
|
* This function can be used to check the hw power domain state. It is mostly
|
|
* used in hardware state readout functions. Everywhere else code should rely
|
|
* upon explicit power domain reference counting to ensure that the hardware
|
|
* block is powered up before accessing it.
|
|
*
|
|
* Callers must hold the relevant modesetting locks to ensure that concurrent
|
|
* threads can't disable the power well while the caller tries to read a few
|
|
* registers.
|
|
*
|
|
* Returns:
|
|
* True when the power domain is enabled, false otherwise.
|
|
*/
|
|
bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
struct i915_power_domains *power_domains;
|
|
bool ret;
|
|
|
|
power_domains = &dev_priv->power_domains;
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
ret = __intel_display_power_is_enabled(dev_priv, domain);
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Starting with Haswell, we have a "Power Down Well" that can be turned off
|
|
* when not needed anymore. We have 4 registers that can request the power well
|
|
* to be enabled, and it will only be disabled if none of the registers is
|
|
* requesting it to be enabled.
|
|
*/
|
|
static void hsw_power_well_post_enable(struct drm_i915_private *dev_priv,
|
|
u8 irq_pipe_mask, bool has_vga)
|
|
{
|
|
struct pci_dev *pdev = dev_priv->drm.pdev;
|
|
|
|
/*
|
|
* After we re-enable the power well, if we touch VGA register 0x3d5
|
|
* we'll get unclaimed register interrupts. This stops after we write
|
|
* anything to the VGA MSR register. The vgacon module uses this
|
|
* register all the time, so if we unbind our driver and, as a
|
|
* consequence, bind vgacon, we'll get stuck in an infinite loop at
|
|
* console_unlock(). So make here we touch the VGA MSR register, making
|
|
* sure vgacon can keep working normally without triggering interrupts
|
|
* and error messages.
|
|
*/
|
|
if (has_vga) {
|
|
vga_get_uninterruptible(pdev, VGA_RSRC_LEGACY_IO);
|
|
outb(inb(VGA_MSR_READ), VGA_MSR_WRITE);
|
|
vga_put(pdev, VGA_RSRC_LEGACY_IO);
|
|
}
|
|
|
|
if (irq_pipe_mask)
|
|
gen8_irq_power_well_post_enable(dev_priv, irq_pipe_mask);
|
|
}
|
|
|
|
static void hsw_power_well_pre_disable(struct drm_i915_private *dev_priv,
|
|
u8 irq_pipe_mask)
|
|
{
|
|
if (irq_pipe_mask)
|
|
gen8_irq_power_well_pre_disable(dev_priv, irq_pipe_mask);
|
|
}
|
|
|
|
|
|
static void hsw_wait_for_power_well_enable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
|
|
int pw_idx = power_well->desc->hsw.idx;
|
|
|
|
/* Timeout for PW1:10 us, AUX:not specified, other PWs:20 us. */
|
|
WARN_ON(intel_wait_for_register(&dev_priv->uncore,
|
|
regs->driver,
|
|
HSW_PWR_WELL_CTL_STATE(pw_idx),
|
|
HSW_PWR_WELL_CTL_STATE(pw_idx),
|
|
1));
|
|
}
|
|
|
|
static u32 hsw_power_well_requesters(struct drm_i915_private *dev_priv,
|
|
const struct i915_power_well_regs *regs,
|
|
int pw_idx)
|
|
{
|
|
u32 req_mask = HSW_PWR_WELL_CTL_REQ(pw_idx);
|
|
u32 ret;
|
|
|
|
ret = I915_READ(regs->bios) & req_mask ? 1 : 0;
|
|
ret |= I915_READ(regs->driver) & req_mask ? 2 : 0;
|
|
if (regs->kvmr.reg)
|
|
ret |= I915_READ(regs->kvmr) & req_mask ? 4 : 0;
|
|
ret |= I915_READ(regs->debug) & req_mask ? 8 : 0;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void hsw_wait_for_power_well_disable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
|
|
int pw_idx = power_well->desc->hsw.idx;
|
|
bool disabled;
|
|
u32 reqs;
|
|
|
|
/*
|
|
* Bspec doesn't require waiting for PWs to get disabled, but still do
|
|
* this for paranoia. The known cases where a PW will be forced on:
|
|
* - a KVMR request on any power well via the KVMR request register
|
|
* - a DMC request on PW1 and MISC_IO power wells via the BIOS and
|
|
* DEBUG request registers
|
|
* Skip the wait in case any of the request bits are set and print a
|
|
* diagnostic message.
|
|
*/
|
|
wait_for((disabled = !(I915_READ(regs->driver) &
|
|
HSW_PWR_WELL_CTL_STATE(pw_idx))) ||
|
|
(reqs = hsw_power_well_requesters(dev_priv, regs, pw_idx)), 1);
|
|
if (disabled)
|
|
return;
|
|
|
|
DRM_DEBUG_KMS("%s forced on (bios:%d driver:%d kvmr:%d debug:%d)\n",
|
|
power_well->desc->name,
|
|
!!(reqs & 1), !!(reqs & 2), !!(reqs & 4), !!(reqs & 8));
|
|
}
|
|
|
|
static void gen9_wait_for_power_well_fuses(struct drm_i915_private *dev_priv,
|
|
enum skl_power_gate pg)
|
|
{
|
|
/* Timeout 5us for PG#0, for other PGs 1us */
|
|
WARN_ON(intel_wait_for_register(&dev_priv->uncore, SKL_FUSE_STATUS,
|
|
SKL_FUSE_PG_DIST_STATUS(pg),
|
|
SKL_FUSE_PG_DIST_STATUS(pg), 1));
|
|
}
|
|
|
|
static void hsw_power_well_enable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
|
|
int pw_idx = power_well->desc->hsw.idx;
|
|
bool wait_fuses = power_well->desc->hsw.has_fuses;
|
|
enum skl_power_gate uninitialized_var(pg);
|
|
u32 val;
|
|
|
|
if (wait_fuses) {
|
|
pg = INTEL_GEN(dev_priv) >= 11 ? ICL_PW_CTL_IDX_TO_PG(pw_idx) :
|
|
SKL_PW_CTL_IDX_TO_PG(pw_idx);
|
|
/*
|
|
* For PW1 we have to wait both for the PW0/PG0 fuse state
|
|
* before enabling the power well and PW1/PG1's own fuse
|
|
* state after the enabling. For all other power wells with
|
|
* fuses we only have to wait for that PW/PG's fuse state
|
|
* after the enabling.
|
|
*/
|
|
if (pg == SKL_PG1)
|
|
gen9_wait_for_power_well_fuses(dev_priv, SKL_PG0);
|
|
}
|
|
|
|
val = I915_READ(regs->driver);
|
|
I915_WRITE(regs->driver, val | HSW_PWR_WELL_CTL_REQ(pw_idx));
|
|
hsw_wait_for_power_well_enable(dev_priv, power_well);
|
|
|
|
/* Display WA #1178: cnl */
|
|
if (IS_CANNONLAKE(dev_priv) &&
|
|
pw_idx >= GLK_PW_CTL_IDX_AUX_B &&
|
|
pw_idx <= CNL_PW_CTL_IDX_AUX_F) {
|
|
val = I915_READ(CNL_AUX_ANAOVRD1(pw_idx));
|
|
val |= CNL_AUX_ANAOVRD1_ENABLE | CNL_AUX_ANAOVRD1_LDO_BYPASS;
|
|
I915_WRITE(CNL_AUX_ANAOVRD1(pw_idx), val);
|
|
}
|
|
|
|
if (wait_fuses)
|
|
gen9_wait_for_power_well_fuses(dev_priv, pg);
|
|
|
|
hsw_power_well_post_enable(dev_priv,
|
|
power_well->desc->hsw.irq_pipe_mask,
|
|
power_well->desc->hsw.has_vga);
|
|
}
|
|
|
|
static void hsw_power_well_disable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
|
|
int pw_idx = power_well->desc->hsw.idx;
|
|
u32 val;
|
|
|
|
hsw_power_well_pre_disable(dev_priv,
|
|
power_well->desc->hsw.irq_pipe_mask);
|
|
|
|
val = I915_READ(regs->driver);
|
|
I915_WRITE(regs->driver, val & ~HSW_PWR_WELL_CTL_REQ(pw_idx));
|
|
hsw_wait_for_power_well_disable(dev_priv, power_well);
|
|
}
|
|
|
|
#define ICL_AUX_PW_TO_PORT(pw_idx) ((pw_idx) - ICL_PW_CTL_IDX_AUX_A)
|
|
|
|
static void
|
|
icl_combo_phy_aux_power_well_enable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
|
|
int pw_idx = power_well->desc->hsw.idx;
|
|
enum port port = ICL_AUX_PW_TO_PORT(pw_idx);
|
|
u32 val;
|
|
|
|
val = I915_READ(regs->driver);
|
|
I915_WRITE(regs->driver, val | HSW_PWR_WELL_CTL_REQ(pw_idx));
|
|
|
|
val = I915_READ(ICL_PORT_CL_DW12(port));
|
|
I915_WRITE(ICL_PORT_CL_DW12(port), val | ICL_LANE_ENABLE_AUX);
|
|
|
|
hsw_wait_for_power_well_enable(dev_priv, power_well);
|
|
|
|
/* Display WA #1178: icl */
|
|
if (IS_ICELAKE(dev_priv) &&
|
|
pw_idx >= ICL_PW_CTL_IDX_AUX_A && pw_idx <= ICL_PW_CTL_IDX_AUX_B &&
|
|
!intel_bios_is_port_edp(dev_priv, port)) {
|
|
val = I915_READ(ICL_AUX_ANAOVRD1(pw_idx));
|
|
val |= ICL_AUX_ANAOVRD1_ENABLE | ICL_AUX_ANAOVRD1_LDO_BYPASS;
|
|
I915_WRITE(ICL_AUX_ANAOVRD1(pw_idx), val);
|
|
}
|
|
}
|
|
|
|
static void
|
|
icl_combo_phy_aux_power_well_disable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
|
|
int pw_idx = power_well->desc->hsw.idx;
|
|
enum port port = ICL_AUX_PW_TO_PORT(pw_idx);
|
|
u32 val;
|
|
|
|
val = I915_READ(ICL_PORT_CL_DW12(port));
|
|
I915_WRITE(ICL_PORT_CL_DW12(port), val & ~ICL_LANE_ENABLE_AUX);
|
|
|
|
val = I915_READ(regs->driver);
|
|
I915_WRITE(regs->driver, val & ~HSW_PWR_WELL_CTL_REQ(pw_idx));
|
|
|
|
hsw_wait_for_power_well_disable(dev_priv, power_well);
|
|
}
|
|
|
|
#define ICL_AUX_PW_TO_CH(pw_idx) \
|
|
((pw_idx) - ICL_PW_CTL_IDX_AUX_A + AUX_CH_A)
|
|
|
|
static void
|
|
icl_tc_phy_aux_power_well_enable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
enum aux_ch aux_ch = ICL_AUX_PW_TO_CH(power_well->desc->hsw.idx);
|
|
u32 val;
|
|
|
|
val = I915_READ(DP_AUX_CH_CTL(aux_ch));
|
|
val &= ~DP_AUX_CH_CTL_TBT_IO;
|
|
if (power_well->desc->hsw.is_tc_tbt)
|
|
val |= DP_AUX_CH_CTL_TBT_IO;
|
|
I915_WRITE(DP_AUX_CH_CTL(aux_ch), val);
|
|
|
|
hsw_power_well_enable(dev_priv, power_well);
|
|
}
|
|
|
|
/*
|
|
* We should only use the power well if we explicitly asked the hardware to
|
|
* enable it, so check if it's enabled and also check if we've requested it to
|
|
* be enabled.
|
|
*/
|
|
static bool hsw_power_well_enabled(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
|
|
enum i915_power_well_id id = power_well->desc->id;
|
|
int pw_idx = power_well->desc->hsw.idx;
|
|
u32 mask = HSW_PWR_WELL_CTL_REQ(pw_idx) |
|
|
HSW_PWR_WELL_CTL_STATE(pw_idx);
|
|
u32 val;
|
|
|
|
val = I915_READ(regs->driver);
|
|
|
|
/*
|
|
* On GEN9 big core due to a DMC bug the driver's request bits for PW1
|
|
* and the MISC_IO PW will be not restored, so check instead for the
|
|
* BIOS's own request bits, which are forced-on for these power wells
|
|
* when exiting DC5/6.
|
|
*/
|
|
if (IS_GEN(dev_priv, 9) && !IS_GEN9_LP(dev_priv) &&
|
|
(id == SKL_DISP_PW_1 || id == SKL_DISP_PW_MISC_IO))
|
|
val |= I915_READ(regs->bios);
|
|
|
|
return (val & mask) == mask;
|
|
}
|
|
|
|
static void assert_can_enable_dc9(struct drm_i915_private *dev_priv)
|
|
{
|
|
WARN_ONCE((I915_READ(DC_STATE_EN) & DC_STATE_EN_DC9),
|
|
"DC9 already programmed to be enabled.\n");
|
|
WARN_ONCE(I915_READ(DC_STATE_EN) & DC_STATE_EN_UPTO_DC5,
|
|
"DC5 still not disabled to enable DC9.\n");
|
|
WARN_ONCE(I915_READ(HSW_PWR_WELL_CTL2) &
|
|
HSW_PWR_WELL_CTL_REQ(SKL_PW_CTL_IDX_PW_2),
|
|
"Power well 2 on.\n");
|
|
WARN_ONCE(intel_irqs_enabled(dev_priv),
|
|
"Interrupts not disabled yet.\n");
|
|
|
|
/*
|
|
* TODO: check for the following to verify the conditions to enter DC9
|
|
* state are satisfied:
|
|
* 1] Check relevant display engine registers to verify if mode set
|
|
* disable sequence was followed.
|
|
* 2] Check if display uninitialize sequence is initialized.
|
|
*/
|
|
}
|
|
|
|
static void assert_can_disable_dc9(struct drm_i915_private *dev_priv)
|
|
{
|
|
WARN_ONCE(intel_irqs_enabled(dev_priv),
|
|
"Interrupts not disabled yet.\n");
|
|
WARN_ONCE(I915_READ(DC_STATE_EN) & DC_STATE_EN_UPTO_DC5,
|
|
"DC5 still not disabled.\n");
|
|
|
|
/*
|
|
* TODO: check for the following to verify DC9 state was indeed
|
|
* entered before programming to disable it:
|
|
* 1] Check relevant display engine registers to verify if mode
|
|
* set disable sequence was followed.
|
|
* 2] Check if display uninitialize sequence is initialized.
|
|
*/
|
|
}
|
|
|
|
static void gen9_write_dc_state(struct drm_i915_private *dev_priv,
|
|
u32 state)
|
|
{
|
|
int rewrites = 0;
|
|
int rereads = 0;
|
|
u32 v;
|
|
|
|
I915_WRITE(DC_STATE_EN, state);
|
|
|
|
/* It has been observed that disabling the dc6 state sometimes
|
|
* doesn't stick and dmc keeps returning old value. Make sure
|
|
* the write really sticks enough times and also force rewrite until
|
|
* we are confident that state is exactly what we want.
|
|
*/
|
|
do {
|
|
v = I915_READ(DC_STATE_EN);
|
|
|
|
if (v != state) {
|
|
I915_WRITE(DC_STATE_EN, state);
|
|
rewrites++;
|
|
rereads = 0;
|
|
} else if (rereads++ > 5) {
|
|
break;
|
|
}
|
|
|
|
} while (rewrites < 100);
|
|
|
|
if (v != state)
|
|
DRM_ERROR("Writing dc state to 0x%x failed, now 0x%x\n",
|
|
state, v);
|
|
|
|
/* Most of the times we need one retry, avoid spam */
|
|
if (rewrites > 1)
|
|
DRM_DEBUG_KMS("Rewrote dc state to 0x%x %d times\n",
|
|
state, rewrites);
|
|
}
|
|
|
|
static u32 gen9_dc_mask(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 mask;
|
|
|
|
mask = DC_STATE_EN_UPTO_DC5;
|
|
if (INTEL_GEN(dev_priv) >= 11)
|
|
mask |= DC_STATE_EN_UPTO_DC6 | DC_STATE_EN_DC9;
|
|
else if (IS_GEN9_LP(dev_priv))
|
|
mask |= DC_STATE_EN_DC9;
|
|
else
|
|
mask |= DC_STATE_EN_UPTO_DC6;
|
|
|
|
return mask;
|
|
}
|
|
|
|
void gen9_sanitize_dc_state(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 val;
|
|
|
|
val = I915_READ(DC_STATE_EN) & gen9_dc_mask(dev_priv);
|
|
|
|
DRM_DEBUG_KMS("Resetting DC state tracking from %02x to %02x\n",
|
|
dev_priv->csr.dc_state, val);
|
|
dev_priv->csr.dc_state = val;
|
|
}
|
|
|
|
/**
|
|
* gen9_set_dc_state - set target display C power state
|
|
* @dev_priv: i915 device instance
|
|
* @state: target DC power state
|
|
* - DC_STATE_DISABLE
|
|
* - DC_STATE_EN_UPTO_DC5
|
|
* - DC_STATE_EN_UPTO_DC6
|
|
* - DC_STATE_EN_DC9
|
|
*
|
|
* Signal to DMC firmware/HW the target DC power state passed in @state.
|
|
* DMC/HW can turn off individual display clocks and power rails when entering
|
|
* a deeper DC power state (higher in number) and turns these back when exiting
|
|
* that state to a shallower power state (lower in number). The HW will decide
|
|
* when to actually enter a given state on an on-demand basis, for instance
|
|
* depending on the active state of display pipes. The state of display
|
|
* registers backed by affected power rails are saved/restored as needed.
|
|
*
|
|
* Based on the above enabling a deeper DC power state is asynchronous wrt.
|
|
* enabling it. Disabling a deeper power state is synchronous: for instance
|
|
* setting %DC_STATE_DISABLE won't complete until all HW resources are turned
|
|
* back on and register state is restored. This is guaranteed by the MMIO write
|
|
* to DC_STATE_EN blocking until the state is restored.
|
|
*/
|
|
static void gen9_set_dc_state(struct drm_i915_private *dev_priv, u32 state)
|
|
{
|
|
u32 val;
|
|
u32 mask;
|
|
|
|
if (WARN_ON_ONCE(state & ~dev_priv->csr.allowed_dc_mask))
|
|
state &= dev_priv->csr.allowed_dc_mask;
|
|
|
|
val = I915_READ(DC_STATE_EN);
|
|
mask = gen9_dc_mask(dev_priv);
|
|
DRM_DEBUG_KMS("Setting DC state from %02x to %02x\n",
|
|
val & mask, state);
|
|
|
|
/* Check if DMC is ignoring our DC state requests */
|
|
if ((val & mask) != dev_priv->csr.dc_state)
|
|
DRM_ERROR("DC state mismatch (0x%x -> 0x%x)\n",
|
|
dev_priv->csr.dc_state, val & mask);
|
|
|
|
val &= ~mask;
|
|
val |= state;
|
|
|
|
gen9_write_dc_state(dev_priv, val);
|
|
|
|
dev_priv->csr.dc_state = val & mask;
|
|
}
|
|
|
|
void bxt_enable_dc9(struct drm_i915_private *dev_priv)
|
|
{
|
|
assert_can_enable_dc9(dev_priv);
|
|
|
|
DRM_DEBUG_KMS("Enabling DC9\n");
|
|
/*
|
|
* Power sequencer reset is not needed on
|
|
* platforms with South Display Engine on PCH,
|
|
* because PPS registers are always on.
|
|
*/
|
|
if (!HAS_PCH_SPLIT(dev_priv))
|
|
intel_power_sequencer_reset(dev_priv);
|
|
gen9_set_dc_state(dev_priv, DC_STATE_EN_DC9);
|
|
}
|
|
|
|
void bxt_disable_dc9(struct drm_i915_private *dev_priv)
|
|
{
|
|
assert_can_disable_dc9(dev_priv);
|
|
|
|
DRM_DEBUG_KMS("Disabling DC9\n");
|
|
|
|
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
|
|
|
|
intel_pps_unlock_regs_wa(dev_priv);
|
|
}
|
|
|
|
static void assert_csr_loaded(struct drm_i915_private *dev_priv)
|
|
{
|
|
WARN_ONCE(!I915_READ(CSR_PROGRAM(0)),
|
|
"CSR program storage start is NULL\n");
|
|
WARN_ONCE(!I915_READ(CSR_SSP_BASE), "CSR SSP Base Not fine\n");
|
|
WARN_ONCE(!I915_READ(CSR_HTP_SKL), "CSR HTP Not fine\n");
|
|
}
|
|
|
|
static struct i915_power_well *
|
|
lookup_power_well(struct drm_i915_private *dev_priv,
|
|
enum i915_power_well_id power_well_id)
|
|
{
|
|
struct i915_power_well *power_well;
|
|
|
|
for_each_power_well(dev_priv, power_well)
|
|
if (power_well->desc->id == power_well_id)
|
|
return power_well;
|
|
|
|
/*
|
|
* It's not feasible to add error checking code to the callers since
|
|
* this condition really shouldn't happen and it doesn't even make sense
|
|
* to abort things like display initialization sequences. Just return
|
|
* the first power well and hope the WARN gets reported so we can fix
|
|
* our driver.
|
|
*/
|
|
WARN(1, "Power well %d not defined for this platform\n", power_well_id);
|
|
return &dev_priv->power_domains.power_wells[0];
|
|
}
|
|
|
|
static void assert_can_enable_dc5(struct drm_i915_private *dev_priv)
|
|
{
|
|
bool pg2_enabled = intel_display_power_well_is_enabled(dev_priv,
|
|
SKL_DISP_PW_2);
|
|
|
|
WARN_ONCE(pg2_enabled, "PG2 not disabled to enable DC5.\n");
|
|
|
|
WARN_ONCE((I915_READ(DC_STATE_EN) & DC_STATE_EN_UPTO_DC5),
|
|
"DC5 already programmed to be enabled.\n");
|
|
assert_rpm_wakelock_held(dev_priv);
|
|
|
|
assert_csr_loaded(dev_priv);
|
|
}
|
|
|
|
void gen9_enable_dc5(struct drm_i915_private *dev_priv)
|
|
{
|
|
assert_can_enable_dc5(dev_priv);
|
|
|
|
DRM_DEBUG_KMS("Enabling DC5\n");
|
|
|
|
/* Wa Display #1183: skl,kbl,cfl */
|
|
if (IS_GEN9_BC(dev_priv))
|
|
I915_WRITE(GEN8_CHICKEN_DCPR_1, I915_READ(GEN8_CHICKEN_DCPR_1) |
|
|
SKL_SELECT_ALTERNATE_DC_EXIT);
|
|
|
|
gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC5);
|
|
}
|
|
|
|
static void assert_can_enable_dc6(struct drm_i915_private *dev_priv)
|
|
{
|
|
WARN_ONCE(I915_READ(UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
|
|
"Backlight is not disabled.\n");
|
|
WARN_ONCE((I915_READ(DC_STATE_EN) & DC_STATE_EN_UPTO_DC6),
|
|
"DC6 already programmed to be enabled.\n");
|
|
|
|
assert_csr_loaded(dev_priv);
|
|
}
|
|
|
|
void skl_enable_dc6(struct drm_i915_private *dev_priv)
|
|
{
|
|
assert_can_enable_dc6(dev_priv);
|
|
|
|
DRM_DEBUG_KMS("Enabling DC6\n");
|
|
|
|
/* Wa Display #1183: skl,kbl,cfl */
|
|
if (IS_GEN9_BC(dev_priv))
|
|
I915_WRITE(GEN8_CHICKEN_DCPR_1, I915_READ(GEN8_CHICKEN_DCPR_1) |
|
|
SKL_SELECT_ALTERNATE_DC_EXIT);
|
|
|
|
gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6);
|
|
}
|
|
|
|
static void hsw_power_well_sync_hw(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
const struct i915_power_well_regs *regs = power_well->desc->hsw.regs;
|
|
int pw_idx = power_well->desc->hsw.idx;
|
|
u32 mask = HSW_PWR_WELL_CTL_REQ(pw_idx);
|
|
u32 bios_req = I915_READ(regs->bios);
|
|
|
|
/* Take over the request bit if set by BIOS. */
|
|
if (bios_req & mask) {
|
|
u32 drv_req = I915_READ(regs->driver);
|
|
|
|
if (!(drv_req & mask))
|
|
I915_WRITE(regs->driver, drv_req | mask);
|
|
I915_WRITE(regs->bios, bios_req & ~mask);
|
|
}
|
|
}
|
|
|
|
static void bxt_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
bxt_ddi_phy_init(dev_priv, power_well->desc->bxt.phy);
|
|
}
|
|
|
|
static void bxt_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
bxt_ddi_phy_uninit(dev_priv, power_well->desc->bxt.phy);
|
|
}
|
|
|
|
static bool bxt_dpio_cmn_power_well_enabled(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
return bxt_ddi_phy_is_enabled(dev_priv, power_well->desc->bxt.phy);
|
|
}
|
|
|
|
static void bxt_verify_ddi_phy_power_wells(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_well *power_well;
|
|
|
|
power_well = lookup_power_well(dev_priv, BXT_DISP_PW_DPIO_CMN_A);
|
|
if (power_well->count > 0)
|
|
bxt_ddi_phy_verify_state(dev_priv, power_well->desc->bxt.phy);
|
|
|
|
power_well = lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
|
|
if (power_well->count > 0)
|
|
bxt_ddi_phy_verify_state(dev_priv, power_well->desc->bxt.phy);
|
|
|
|
if (IS_GEMINILAKE(dev_priv)) {
|
|
power_well = lookup_power_well(dev_priv,
|
|
GLK_DISP_PW_DPIO_CMN_C);
|
|
if (power_well->count > 0)
|
|
bxt_ddi_phy_verify_state(dev_priv,
|
|
power_well->desc->bxt.phy);
|
|
}
|
|
}
|
|
|
|
static bool gen9_dc_off_power_well_enabled(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
return (I915_READ(DC_STATE_EN) & DC_STATE_EN_UPTO_DC5_DC6_MASK) == 0;
|
|
}
|
|
|
|
static void gen9_assert_dbuf_enabled(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 tmp = I915_READ(DBUF_CTL);
|
|
|
|
WARN((tmp & (DBUF_POWER_STATE | DBUF_POWER_REQUEST)) !=
|
|
(DBUF_POWER_STATE | DBUF_POWER_REQUEST),
|
|
"Unexpected DBuf power power state (0x%08x)\n", tmp);
|
|
}
|
|
|
|
static void gen9_dc_off_power_well_enable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
struct intel_cdclk_state cdclk_state = {};
|
|
|
|
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
|
|
|
|
dev_priv->display.get_cdclk(dev_priv, &cdclk_state);
|
|
/* Can't read out voltage_level so can't use intel_cdclk_changed() */
|
|
WARN_ON(intel_cdclk_needs_modeset(&dev_priv->cdclk.hw, &cdclk_state));
|
|
|
|
gen9_assert_dbuf_enabled(dev_priv);
|
|
|
|
if (IS_GEN9_LP(dev_priv))
|
|
bxt_verify_ddi_phy_power_wells(dev_priv);
|
|
|
|
if (INTEL_GEN(dev_priv) >= 11)
|
|
/*
|
|
* DMC retains HW context only for port A, the other combo
|
|
* PHY's HW context for port B is lost after DC transitions,
|
|
* so we need to restore it manually.
|
|
*/
|
|
intel_combo_phy_init(dev_priv);
|
|
}
|
|
|
|
static void gen9_dc_off_power_well_disable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
if (!dev_priv->csr.dmc_payload)
|
|
return;
|
|
|
|
if (dev_priv->csr.allowed_dc_mask & DC_STATE_EN_UPTO_DC6)
|
|
skl_enable_dc6(dev_priv);
|
|
else if (dev_priv->csr.allowed_dc_mask & DC_STATE_EN_UPTO_DC5)
|
|
gen9_enable_dc5(dev_priv);
|
|
}
|
|
|
|
static void i9xx_power_well_sync_hw_noop(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
}
|
|
|
|
static void i9xx_always_on_power_well_noop(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
}
|
|
|
|
static bool i9xx_always_on_power_well_enabled(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static void i830_pipes_power_well_enable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
if ((I915_READ(PIPECONF(PIPE_A)) & PIPECONF_ENABLE) == 0)
|
|
i830_enable_pipe(dev_priv, PIPE_A);
|
|
if ((I915_READ(PIPECONF(PIPE_B)) & PIPECONF_ENABLE) == 0)
|
|
i830_enable_pipe(dev_priv, PIPE_B);
|
|
}
|
|
|
|
static void i830_pipes_power_well_disable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
i830_disable_pipe(dev_priv, PIPE_B);
|
|
i830_disable_pipe(dev_priv, PIPE_A);
|
|
}
|
|
|
|
static bool i830_pipes_power_well_enabled(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
return I915_READ(PIPECONF(PIPE_A)) & PIPECONF_ENABLE &&
|
|
I915_READ(PIPECONF(PIPE_B)) & PIPECONF_ENABLE;
|
|
}
|
|
|
|
static void i830_pipes_power_well_sync_hw(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
if (power_well->count > 0)
|
|
i830_pipes_power_well_enable(dev_priv, power_well);
|
|
else
|
|
i830_pipes_power_well_disable(dev_priv, power_well);
|
|
}
|
|
|
|
static void vlv_set_power_well(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well, bool enable)
|
|
{
|
|
int pw_idx = power_well->desc->vlv.idx;
|
|
u32 mask;
|
|
u32 state;
|
|
u32 ctrl;
|
|
|
|
mask = PUNIT_PWRGT_MASK(pw_idx);
|
|
state = enable ? PUNIT_PWRGT_PWR_ON(pw_idx) :
|
|
PUNIT_PWRGT_PWR_GATE(pw_idx);
|
|
|
|
vlv_punit_get(dev_priv);
|
|
|
|
#define COND \
|
|
((vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask) == state)
|
|
|
|
if (COND)
|
|
goto out;
|
|
|
|
ctrl = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL);
|
|
ctrl &= ~mask;
|
|
ctrl |= state;
|
|
vlv_punit_write(dev_priv, PUNIT_REG_PWRGT_CTRL, ctrl);
|
|
|
|
if (wait_for(COND, 100))
|
|
DRM_ERROR("timeout setting power well state %08x (%08x)\n",
|
|
state,
|
|
vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL));
|
|
|
|
#undef COND
|
|
|
|
out:
|
|
vlv_punit_put(dev_priv);
|
|
}
|
|
|
|
static void vlv_power_well_enable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
vlv_set_power_well(dev_priv, power_well, true);
|
|
}
|
|
|
|
static void vlv_power_well_disable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
vlv_set_power_well(dev_priv, power_well, false);
|
|
}
|
|
|
|
static bool vlv_power_well_enabled(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
int pw_idx = power_well->desc->vlv.idx;
|
|
bool enabled = false;
|
|
u32 mask;
|
|
u32 state;
|
|
u32 ctrl;
|
|
|
|
mask = PUNIT_PWRGT_MASK(pw_idx);
|
|
ctrl = PUNIT_PWRGT_PWR_ON(pw_idx);
|
|
|
|
vlv_punit_get(dev_priv);
|
|
|
|
state = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_STATUS) & mask;
|
|
/*
|
|
* We only ever set the power-on and power-gate states, anything
|
|
* else is unexpected.
|
|
*/
|
|
WARN_ON(state != PUNIT_PWRGT_PWR_ON(pw_idx) &&
|
|
state != PUNIT_PWRGT_PWR_GATE(pw_idx));
|
|
if (state == ctrl)
|
|
enabled = true;
|
|
|
|
/*
|
|
* A transient state at this point would mean some unexpected party
|
|
* is poking at the power controls too.
|
|
*/
|
|
ctrl = vlv_punit_read(dev_priv, PUNIT_REG_PWRGT_CTRL) & mask;
|
|
WARN_ON(ctrl != state);
|
|
|
|
vlv_punit_put(dev_priv);
|
|
|
|
return enabled;
|
|
}
|
|
|
|
static void vlv_init_display_clock_gating(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 val;
|
|
|
|
/*
|
|
* On driver load, a pipe may be active and driving a DSI display.
|
|
* Preserve DPOUNIT_CLOCK_GATE_DISABLE to avoid the pipe getting stuck
|
|
* (and never recovering) in this case. intel_dsi_post_disable() will
|
|
* clear it when we turn off the display.
|
|
*/
|
|
val = I915_READ(DSPCLK_GATE_D);
|
|
val &= DPOUNIT_CLOCK_GATE_DISABLE;
|
|
val |= VRHUNIT_CLOCK_GATE_DISABLE;
|
|
I915_WRITE(DSPCLK_GATE_D, val);
|
|
|
|
/*
|
|
* Disable trickle feed and enable pnd deadline calculation
|
|
*/
|
|
I915_WRITE(MI_ARB_VLV, MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE);
|
|
I915_WRITE(CBR1_VLV, 0);
|
|
|
|
WARN_ON(dev_priv->rawclk_freq == 0);
|
|
|
|
I915_WRITE(RAWCLK_FREQ_VLV,
|
|
DIV_ROUND_CLOSEST(dev_priv->rawclk_freq, 1000));
|
|
}
|
|
|
|
static void vlv_display_power_well_init(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct intel_encoder *encoder;
|
|
enum pipe pipe;
|
|
|
|
/*
|
|
* Enable the CRI clock source so we can get at the
|
|
* display and the reference clock for VGA
|
|
* hotplug / manual detection. Supposedly DSI also
|
|
* needs the ref clock up and running.
|
|
*
|
|
* CHV DPLL B/C have some issues if VGA mode is enabled.
|
|
*/
|
|
for_each_pipe(dev_priv, pipe) {
|
|
u32 val = I915_READ(DPLL(pipe));
|
|
|
|
val |= DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
|
|
if (pipe != PIPE_A)
|
|
val |= DPLL_INTEGRATED_CRI_CLK_VLV;
|
|
|
|
I915_WRITE(DPLL(pipe), val);
|
|
}
|
|
|
|
vlv_init_display_clock_gating(dev_priv);
|
|
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
valleyview_enable_display_irqs(dev_priv);
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
|
|
/*
|
|
* During driver initialization/resume we can avoid restoring the
|
|
* part of the HW/SW state that will be inited anyway explicitly.
|
|
*/
|
|
if (dev_priv->power_domains.initializing)
|
|
return;
|
|
|
|
intel_hpd_init(dev_priv);
|
|
|
|
/* Re-enable the ADPA, if we have one */
|
|
for_each_intel_encoder(&dev_priv->drm, encoder) {
|
|
if (encoder->type == INTEL_OUTPUT_ANALOG)
|
|
intel_crt_reset(&encoder->base);
|
|
}
|
|
|
|
i915_redisable_vga_power_on(dev_priv);
|
|
|
|
intel_pps_unlock_regs_wa(dev_priv);
|
|
}
|
|
|
|
static void vlv_display_power_well_deinit(struct drm_i915_private *dev_priv)
|
|
{
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
valleyview_disable_display_irqs(dev_priv);
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
|
|
/* make sure we're done processing display irqs */
|
|
synchronize_irq(dev_priv->drm.irq);
|
|
|
|
intel_power_sequencer_reset(dev_priv);
|
|
|
|
/* Prevent us from re-enabling polling on accident in late suspend */
|
|
if (!dev_priv->drm.dev->power.is_suspended)
|
|
intel_hpd_poll_init(dev_priv);
|
|
}
|
|
|
|
static void vlv_display_power_well_enable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
vlv_set_power_well(dev_priv, power_well, true);
|
|
|
|
vlv_display_power_well_init(dev_priv);
|
|
}
|
|
|
|
static void vlv_display_power_well_disable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
vlv_display_power_well_deinit(dev_priv);
|
|
|
|
vlv_set_power_well(dev_priv, power_well, false);
|
|
}
|
|
|
|
static void vlv_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
/* since ref/cri clock was enabled */
|
|
udelay(1); /* >10ns for cmnreset, >0ns for sidereset */
|
|
|
|
vlv_set_power_well(dev_priv, power_well, true);
|
|
|
|
/*
|
|
* From VLV2A0_DP_eDP_DPIO_driver_vbios_notes_10.docx -
|
|
* 6. De-assert cmn_reset/side_reset. Same as VLV X0.
|
|
* a. GUnit 0x2110 bit[0] set to 1 (def 0)
|
|
* b. The other bits such as sfr settings / modesel may all
|
|
* be set to 0.
|
|
*
|
|
* This should only be done on init and resume from S3 with
|
|
* both PLLs disabled, or we risk losing DPIO and PLL
|
|
* synchronization.
|
|
*/
|
|
I915_WRITE(DPIO_CTL, I915_READ(DPIO_CTL) | DPIO_CMNRST);
|
|
}
|
|
|
|
static void vlv_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
enum pipe pipe;
|
|
|
|
for_each_pipe(dev_priv, pipe)
|
|
assert_pll_disabled(dev_priv, pipe);
|
|
|
|
/* Assert common reset */
|
|
I915_WRITE(DPIO_CTL, I915_READ(DPIO_CTL) & ~DPIO_CMNRST);
|
|
|
|
vlv_set_power_well(dev_priv, power_well, false);
|
|
}
|
|
|
|
#define POWER_DOMAIN_MASK (GENMASK_ULL(POWER_DOMAIN_NUM - 1, 0))
|
|
|
|
#define BITS_SET(val, bits) (((val) & (bits)) == (bits))
|
|
|
|
static void assert_chv_phy_status(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_well *cmn_bc =
|
|
lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
|
|
struct i915_power_well *cmn_d =
|
|
lookup_power_well(dev_priv, CHV_DISP_PW_DPIO_CMN_D);
|
|
u32 phy_control = dev_priv->chv_phy_control;
|
|
u32 phy_status = 0;
|
|
u32 phy_status_mask = 0xffffffff;
|
|
|
|
/*
|
|
* The BIOS can leave the PHY is some weird state
|
|
* where it doesn't fully power down some parts.
|
|
* Disable the asserts until the PHY has been fully
|
|
* reset (ie. the power well has been disabled at
|
|
* least once).
|
|
*/
|
|
if (!dev_priv->chv_phy_assert[DPIO_PHY0])
|
|
phy_status_mask &= ~(PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH0) |
|
|
PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 0) |
|
|
PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 1) |
|
|
PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH1) |
|
|
PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 0) |
|
|
PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 1));
|
|
|
|
if (!dev_priv->chv_phy_assert[DPIO_PHY1])
|
|
phy_status_mask &= ~(PHY_STATUS_CMN_LDO(DPIO_PHY1, DPIO_CH0) |
|
|
PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 0) |
|
|
PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 1));
|
|
|
|
if (cmn_bc->desc->ops->is_enabled(dev_priv, cmn_bc)) {
|
|
phy_status |= PHY_POWERGOOD(DPIO_PHY0);
|
|
|
|
/* this assumes override is only used to enable lanes */
|
|
if ((phy_control & PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH0)) == 0)
|
|
phy_control |= PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH0);
|
|
|
|
if ((phy_control & PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH1)) == 0)
|
|
phy_control |= PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH1);
|
|
|
|
/* CL1 is on whenever anything is on in either channel */
|
|
if (BITS_SET(phy_control,
|
|
PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH0) |
|
|
PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH1)))
|
|
phy_status |= PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH0);
|
|
|
|
/*
|
|
* The DPLLB check accounts for the pipe B + port A usage
|
|
* with CL2 powered up but all the lanes in the second channel
|
|
* powered down.
|
|
*/
|
|
if (BITS_SET(phy_control,
|
|
PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY0, DPIO_CH1)) &&
|
|
(I915_READ(DPLL(PIPE_B)) & DPLL_VCO_ENABLE) == 0)
|
|
phy_status |= PHY_STATUS_CMN_LDO(DPIO_PHY0, DPIO_CH1);
|
|
|
|
if (BITS_SET(phy_control,
|
|
PHY_CH_POWER_DOWN_OVRD(0x3, DPIO_PHY0, DPIO_CH0)))
|
|
phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 0);
|
|
if (BITS_SET(phy_control,
|
|
PHY_CH_POWER_DOWN_OVRD(0xc, DPIO_PHY0, DPIO_CH0)))
|
|
phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH0, 1);
|
|
|
|
if (BITS_SET(phy_control,
|
|
PHY_CH_POWER_DOWN_OVRD(0x3, DPIO_PHY0, DPIO_CH1)))
|
|
phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 0);
|
|
if (BITS_SET(phy_control,
|
|
PHY_CH_POWER_DOWN_OVRD(0xc, DPIO_PHY0, DPIO_CH1)))
|
|
phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY0, DPIO_CH1, 1);
|
|
}
|
|
|
|
if (cmn_d->desc->ops->is_enabled(dev_priv, cmn_d)) {
|
|
phy_status |= PHY_POWERGOOD(DPIO_PHY1);
|
|
|
|
/* this assumes override is only used to enable lanes */
|
|
if ((phy_control & PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY1, DPIO_CH0)) == 0)
|
|
phy_control |= PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY1, DPIO_CH0);
|
|
|
|
if (BITS_SET(phy_control,
|
|
PHY_CH_POWER_DOWN_OVRD(0xf, DPIO_PHY1, DPIO_CH0)))
|
|
phy_status |= PHY_STATUS_CMN_LDO(DPIO_PHY1, DPIO_CH0);
|
|
|
|
if (BITS_SET(phy_control,
|
|
PHY_CH_POWER_DOWN_OVRD(0x3, DPIO_PHY1, DPIO_CH0)))
|
|
phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 0);
|
|
if (BITS_SET(phy_control,
|
|
PHY_CH_POWER_DOWN_OVRD(0xc, DPIO_PHY1, DPIO_CH0)))
|
|
phy_status |= PHY_STATUS_SPLINE_LDO(DPIO_PHY1, DPIO_CH0, 1);
|
|
}
|
|
|
|
phy_status &= phy_status_mask;
|
|
|
|
/*
|
|
* The PHY may be busy with some initial calibration and whatnot,
|
|
* so the power state can take a while to actually change.
|
|
*/
|
|
if (intel_wait_for_register(&dev_priv->uncore,
|
|
DISPLAY_PHY_STATUS,
|
|
phy_status_mask,
|
|
phy_status,
|
|
10))
|
|
DRM_ERROR("Unexpected PHY_STATUS 0x%08x, expected 0x%08x (PHY_CONTROL=0x%08x)\n",
|
|
I915_READ(DISPLAY_PHY_STATUS) & phy_status_mask,
|
|
phy_status, dev_priv->chv_phy_control);
|
|
}
|
|
|
|
#undef BITS_SET
|
|
|
|
static void chv_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
enum dpio_phy phy;
|
|
enum pipe pipe;
|
|
u32 tmp;
|
|
|
|
WARN_ON_ONCE(power_well->desc->id != VLV_DISP_PW_DPIO_CMN_BC &&
|
|
power_well->desc->id != CHV_DISP_PW_DPIO_CMN_D);
|
|
|
|
if (power_well->desc->id == VLV_DISP_PW_DPIO_CMN_BC) {
|
|
pipe = PIPE_A;
|
|
phy = DPIO_PHY0;
|
|
} else {
|
|
pipe = PIPE_C;
|
|
phy = DPIO_PHY1;
|
|
}
|
|
|
|
/* since ref/cri clock was enabled */
|
|
udelay(1); /* >10ns for cmnreset, >0ns for sidereset */
|
|
vlv_set_power_well(dev_priv, power_well, true);
|
|
|
|
/* Poll for phypwrgood signal */
|
|
if (intel_wait_for_register(&dev_priv->uncore,
|
|
DISPLAY_PHY_STATUS,
|
|
PHY_POWERGOOD(phy),
|
|
PHY_POWERGOOD(phy),
|
|
1))
|
|
DRM_ERROR("Display PHY %d is not power up\n", phy);
|
|
|
|
vlv_dpio_get(dev_priv);
|
|
|
|
/* Enable dynamic power down */
|
|
tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW28);
|
|
tmp |= DPIO_DYNPWRDOWNEN_CH0 | DPIO_CL1POWERDOWNEN |
|
|
DPIO_SUS_CLK_CONFIG_GATE_CLKREQ;
|
|
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW28, tmp);
|
|
|
|
if (power_well->desc->id == VLV_DISP_PW_DPIO_CMN_BC) {
|
|
tmp = vlv_dpio_read(dev_priv, pipe, _CHV_CMN_DW6_CH1);
|
|
tmp |= DPIO_DYNPWRDOWNEN_CH1;
|
|
vlv_dpio_write(dev_priv, pipe, _CHV_CMN_DW6_CH1, tmp);
|
|
} else {
|
|
/*
|
|
* Force the non-existing CL2 off. BXT does this
|
|
* too, so maybe it saves some power even though
|
|
* CL2 doesn't exist?
|
|
*/
|
|
tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW30);
|
|
tmp |= DPIO_CL2_LDOFUSE_PWRENB;
|
|
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW30, tmp);
|
|
}
|
|
|
|
vlv_dpio_put(dev_priv);
|
|
|
|
dev_priv->chv_phy_control |= PHY_COM_LANE_RESET_DEASSERT(phy);
|
|
I915_WRITE(DISPLAY_PHY_CONTROL, dev_priv->chv_phy_control);
|
|
|
|
DRM_DEBUG_KMS("Enabled DPIO PHY%d (PHY_CONTROL=0x%08x)\n",
|
|
phy, dev_priv->chv_phy_control);
|
|
|
|
assert_chv_phy_status(dev_priv);
|
|
}
|
|
|
|
static void chv_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
enum dpio_phy phy;
|
|
|
|
WARN_ON_ONCE(power_well->desc->id != VLV_DISP_PW_DPIO_CMN_BC &&
|
|
power_well->desc->id != CHV_DISP_PW_DPIO_CMN_D);
|
|
|
|
if (power_well->desc->id == VLV_DISP_PW_DPIO_CMN_BC) {
|
|
phy = DPIO_PHY0;
|
|
assert_pll_disabled(dev_priv, PIPE_A);
|
|
assert_pll_disabled(dev_priv, PIPE_B);
|
|
} else {
|
|
phy = DPIO_PHY1;
|
|
assert_pll_disabled(dev_priv, PIPE_C);
|
|
}
|
|
|
|
dev_priv->chv_phy_control &= ~PHY_COM_LANE_RESET_DEASSERT(phy);
|
|
I915_WRITE(DISPLAY_PHY_CONTROL, dev_priv->chv_phy_control);
|
|
|
|
vlv_set_power_well(dev_priv, power_well, false);
|
|
|
|
DRM_DEBUG_KMS("Disabled DPIO PHY%d (PHY_CONTROL=0x%08x)\n",
|
|
phy, dev_priv->chv_phy_control);
|
|
|
|
/* PHY is fully reset now, so we can enable the PHY state asserts */
|
|
dev_priv->chv_phy_assert[phy] = true;
|
|
|
|
assert_chv_phy_status(dev_priv);
|
|
}
|
|
|
|
static void assert_chv_phy_powergate(struct drm_i915_private *dev_priv, enum dpio_phy phy,
|
|
enum dpio_channel ch, bool override, unsigned int mask)
|
|
{
|
|
enum pipe pipe = phy == DPIO_PHY0 ? PIPE_A : PIPE_C;
|
|
u32 reg, val, expected, actual;
|
|
|
|
/*
|
|
* The BIOS can leave the PHY is some weird state
|
|
* where it doesn't fully power down some parts.
|
|
* Disable the asserts until the PHY has been fully
|
|
* reset (ie. the power well has been disabled at
|
|
* least once).
|
|
*/
|
|
if (!dev_priv->chv_phy_assert[phy])
|
|
return;
|
|
|
|
if (ch == DPIO_CH0)
|
|
reg = _CHV_CMN_DW0_CH0;
|
|
else
|
|
reg = _CHV_CMN_DW6_CH1;
|
|
|
|
vlv_dpio_get(dev_priv);
|
|
val = vlv_dpio_read(dev_priv, pipe, reg);
|
|
vlv_dpio_put(dev_priv);
|
|
|
|
/*
|
|
* This assumes !override is only used when the port is disabled.
|
|
* All lanes should power down even without the override when
|
|
* the port is disabled.
|
|
*/
|
|
if (!override || mask == 0xf) {
|
|
expected = DPIO_ALLDL_POWERDOWN | DPIO_ANYDL_POWERDOWN;
|
|
/*
|
|
* If CH1 common lane is not active anymore
|
|
* (eg. for pipe B DPLL) the entire channel will
|
|
* shut down, which causes the common lane registers
|
|
* to read as 0. That means we can't actually check
|
|
* the lane power down status bits, but as the entire
|
|
* register reads as 0 it's a good indication that the
|
|
* channel is indeed entirely powered down.
|
|
*/
|
|
if (ch == DPIO_CH1 && val == 0)
|
|
expected = 0;
|
|
} else if (mask != 0x0) {
|
|
expected = DPIO_ANYDL_POWERDOWN;
|
|
} else {
|
|
expected = 0;
|
|
}
|
|
|
|
if (ch == DPIO_CH0)
|
|
actual = val >> DPIO_ANYDL_POWERDOWN_SHIFT_CH0;
|
|
else
|
|
actual = val >> DPIO_ANYDL_POWERDOWN_SHIFT_CH1;
|
|
actual &= DPIO_ALLDL_POWERDOWN | DPIO_ANYDL_POWERDOWN;
|
|
|
|
WARN(actual != expected,
|
|
"Unexpected DPIO lane power down: all %d, any %d. Expected: all %d, any %d. (0x%x = 0x%08x)\n",
|
|
!!(actual & DPIO_ALLDL_POWERDOWN), !!(actual & DPIO_ANYDL_POWERDOWN),
|
|
!!(expected & DPIO_ALLDL_POWERDOWN), !!(expected & DPIO_ANYDL_POWERDOWN),
|
|
reg, val);
|
|
}
|
|
|
|
bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy,
|
|
enum dpio_channel ch, bool override)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
bool was_override;
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
was_override = dev_priv->chv_phy_control & PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
|
|
|
|
if (override == was_override)
|
|
goto out;
|
|
|
|
if (override)
|
|
dev_priv->chv_phy_control |= PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
|
|
else
|
|
dev_priv->chv_phy_control &= ~PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
|
|
|
|
I915_WRITE(DISPLAY_PHY_CONTROL, dev_priv->chv_phy_control);
|
|
|
|
DRM_DEBUG_KMS("Power gating DPIO PHY%d CH%d (DPIO_PHY_CONTROL=0x%08x)\n",
|
|
phy, ch, dev_priv->chv_phy_control);
|
|
|
|
assert_chv_phy_status(dev_priv);
|
|
|
|
out:
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
return was_override;
|
|
}
|
|
|
|
void chv_phy_powergate_lanes(struct intel_encoder *encoder,
|
|
bool override, unsigned int mask)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
enum dpio_phy phy = vlv_dport_to_phy(enc_to_dig_port(&encoder->base));
|
|
enum dpio_channel ch = vlv_dport_to_channel(enc_to_dig_port(&encoder->base));
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
dev_priv->chv_phy_control &= ~PHY_CH_POWER_DOWN_OVRD(0xf, phy, ch);
|
|
dev_priv->chv_phy_control |= PHY_CH_POWER_DOWN_OVRD(mask, phy, ch);
|
|
|
|
if (override)
|
|
dev_priv->chv_phy_control |= PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
|
|
else
|
|
dev_priv->chv_phy_control &= ~PHY_CH_POWER_DOWN_OVRD_EN(phy, ch);
|
|
|
|
I915_WRITE(DISPLAY_PHY_CONTROL, dev_priv->chv_phy_control);
|
|
|
|
DRM_DEBUG_KMS("Power gating DPIO PHY%d CH%d lanes 0x%x (PHY_CONTROL=0x%08x)\n",
|
|
phy, ch, mask, dev_priv->chv_phy_control);
|
|
|
|
assert_chv_phy_status(dev_priv);
|
|
|
|
assert_chv_phy_powergate(dev_priv, phy, ch, override, mask);
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
}
|
|
|
|
static bool chv_pipe_power_well_enabled(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
enum pipe pipe = PIPE_A;
|
|
bool enabled;
|
|
u32 state, ctrl;
|
|
|
|
vlv_punit_get(dev_priv);
|
|
|
|
state = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) & DP_SSS_MASK(pipe);
|
|
/*
|
|
* We only ever set the power-on and power-gate states, anything
|
|
* else is unexpected.
|
|
*/
|
|
WARN_ON(state != DP_SSS_PWR_ON(pipe) && state != DP_SSS_PWR_GATE(pipe));
|
|
enabled = state == DP_SSS_PWR_ON(pipe);
|
|
|
|
/*
|
|
* A transient state at this point would mean some unexpected party
|
|
* is poking at the power controls too.
|
|
*/
|
|
ctrl = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) & DP_SSC_MASK(pipe);
|
|
WARN_ON(ctrl << 16 != state);
|
|
|
|
vlv_punit_put(dev_priv);
|
|
|
|
return enabled;
|
|
}
|
|
|
|
static void chv_set_pipe_power_well(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well,
|
|
bool enable)
|
|
{
|
|
enum pipe pipe = PIPE_A;
|
|
u32 state;
|
|
u32 ctrl;
|
|
|
|
state = enable ? DP_SSS_PWR_ON(pipe) : DP_SSS_PWR_GATE(pipe);
|
|
|
|
vlv_punit_get(dev_priv);
|
|
|
|
#define COND \
|
|
((vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM) & DP_SSS_MASK(pipe)) == state)
|
|
|
|
if (COND)
|
|
goto out;
|
|
|
|
ctrl = vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM);
|
|
ctrl &= ~DP_SSC_MASK(pipe);
|
|
ctrl |= enable ? DP_SSC_PWR_ON(pipe) : DP_SSC_PWR_GATE(pipe);
|
|
vlv_punit_write(dev_priv, PUNIT_REG_DSPSSPM, ctrl);
|
|
|
|
if (wait_for(COND, 100))
|
|
DRM_ERROR("timeout setting power well state %08x (%08x)\n",
|
|
state,
|
|
vlv_punit_read(dev_priv, PUNIT_REG_DSPSSPM));
|
|
|
|
#undef COND
|
|
|
|
out:
|
|
vlv_punit_put(dev_priv);
|
|
}
|
|
|
|
static void chv_pipe_power_well_enable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
chv_set_pipe_power_well(dev_priv, power_well, true);
|
|
|
|
vlv_display_power_well_init(dev_priv);
|
|
}
|
|
|
|
static void chv_pipe_power_well_disable(struct drm_i915_private *dev_priv,
|
|
struct i915_power_well *power_well)
|
|
{
|
|
vlv_display_power_well_deinit(dev_priv);
|
|
|
|
chv_set_pipe_power_well(dev_priv, power_well, false);
|
|
}
|
|
|
|
static u64 __async_put_domains_mask(struct i915_power_domains *power_domains)
|
|
{
|
|
return power_domains->async_put_domains[0] |
|
|
power_domains->async_put_domains[1];
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
|
|
|
|
static bool
|
|
assert_async_put_domain_masks_disjoint(struct i915_power_domains *power_domains)
|
|
{
|
|
return !WARN_ON(power_domains->async_put_domains[0] &
|
|
power_domains->async_put_domains[1]);
|
|
}
|
|
|
|
static bool
|
|
__async_put_domains_state_ok(struct i915_power_domains *power_domains)
|
|
{
|
|
enum intel_display_power_domain domain;
|
|
bool err = false;
|
|
|
|
err |= !assert_async_put_domain_masks_disjoint(power_domains);
|
|
err |= WARN_ON(!!power_domains->async_put_wakeref !=
|
|
!!__async_put_domains_mask(power_domains));
|
|
|
|
for_each_power_domain(domain, __async_put_domains_mask(power_domains))
|
|
err |= WARN_ON(power_domains->domain_use_count[domain] != 1);
|
|
|
|
return !err;
|
|
}
|
|
|
|
static void print_power_domains(struct i915_power_domains *power_domains,
|
|
const char *prefix, u64 mask)
|
|
{
|
|
enum intel_display_power_domain domain;
|
|
|
|
DRM_DEBUG_DRIVER("%s (%lu):\n", prefix, hweight64(mask));
|
|
for_each_power_domain(domain, mask)
|
|
DRM_DEBUG_DRIVER("%s use_count %d\n",
|
|
intel_display_power_domain_str(domain),
|
|
power_domains->domain_use_count[domain]);
|
|
}
|
|
|
|
static void
|
|
print_async_put_domains_state(struct i915_power_domains *power_domains)
|
|
{
|
|
DRM_DEBUG_DRIVER("async_put_wakeref %u\n",
|
|
power_domains->async_put_wakeref);
|
|
|
|
print_power_domains(power_domains, "async_put_domains[0]",
|
|
power_domains->async_put_domains[0]);
|
|
print_power_domains(power_domains, "async_put_domains[1]",
|
|
power_domains->async_put_domains[1]);
|
|
}
|
|
|
|
static void
|
|
verify_async_put_domains_state(struct i915_power_domains *power_domains)
|
|
{
|
|
if (!__async_put_domains_state_ok(power_domains))
|
|
print_async_put_domains_state(power_domains);
|
|
}
|
|
|
|
#else
|
|
|
|
static void
|
|
assert_async_put_domain_masks_disjoint(struct i915_power_domains *power_domains)
|
|
{
|
|
}
|
|
|
|
static void
|
|
verify_async_put_domains_state(struct i915_power_domains *power_domains)
|
|
{
|
|
}
|
|
|
|
#endif /* CONFIG_DRM_I915_DEBUG_RUNTIME_PM */
|
|
|
|
static u64 async_put_domains_mask(struct i915_power_domains *power_domains)
|
|
{
|
|
assert_async_put_domain_masks_disjoint(power_domains);
|
|
|
|
return __async_put_domains_mask(power_domains);
|
|
}
|
|
|
|
static void
|
|
async_put_domains_clear_domain(struct i915_power_domains *power_domains,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
assert_async_put_domain_masks_disjoint(power_domains);
|
|
|
|
power_domains->async_put_domains[0] &= ~BIT_ULL(domain);
|
|
power_domains->async_put_domains[1] &= ~BIT_ULL(domain);
|
|
}
|
|
|
|
static bool
|
|
intel_display_power_grab_async_put_ref(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
bool ret = false;
|
|
|
|
if (!(async_put_domains_mask(power_domains) & BIT_ULL(domain)))
|
|
goto out_verify;
|
|
|
|
async_put_domains_clear_domain(power_domains, domain);
|
|
|
|
ret = true;
|
|
|
|
if (async_put_domains_mask(power_domains))
|
|
goto out_verify;
|
|
|
|
cancel_delayed_work(&power_domains->async_put_work);
|
|
intel_runtime_pm_put_raw(dev_priv,
|
|
fetch_and_zero(&power_domains->async_put_wakeref));
|
|
out_verify:
|
|
verify_async_put_domains_state(power_domains);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
__intel_display_power_get_domain(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
struct i915_power_well *power_well;
|
|
|
|
if (intel_display_power_grab_async_put_ref(dev_priv, domain))
|
|
return;
|
|
|
|
for_each_power_domain_well(dev_priv, power_well, BIT_ULL(domain))
|
|
intel_power_well_get(dev_priv, power_well);
|
|
|
|
power_domains->domain_use_count[domain]++;
|
|
}
|
|
|
|
/**
|
|
* intel_display_power_get - grab a power domain reference
|
|
* @dev_priv: i915 device instance
|
|
* @domain: power domain to reference
|
|
*
|
|
* This function grabs a power domain reference for @domain and ensures that the
|
|
* power domain and all its parents are powered up. Therefore users should only
|
|
* grab a reference to the innermost power domain they need.
|
|
*
|
|
* Any power domain reference obtained by this function must have a symmetric
|
|
* call to intel_display_power_put() to release the reference again.
|
|
*/
|
|
intel_wakeref_t intel_display_power_get(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
intel_wakeref_t wakeref = intel_runtime_pm_get(dev_priv);
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
__intel_display_power_get_domain(dev_priv, domain);
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
return wakeref;
|
|
}
|
|
|
|
/**
|
|
* intel_display_power_get_if_enabled - grab a reference for an enabled display power domain
|
|
* @dev_priv: i915 device instance
|
|
* @domain: power domain to reference
|
|
*
|
|
* This function grabs a power domain reference for @domain and ensures that the
|
|
* power domain and all its parents are powered up. Therefore users should only
|
|
* grab a reference to the innermost power domain they need.
|
|
*
|
|
* Any power domain reference obtained by this function must have a symmetric
|
|
* call to intel_display_power_put() to release the reference again.
|
|
*/
|
|
intel_wakeref_t
|
|
intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
intel_wakeref_t wakeref;
|
|
bool is_enabled;
|
|
|
|
wakeref = intel_runtime_pm_get_if_in_use(dev_priv);
|
|
if (!wakeref)
|
|
return false;
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
if (__intel_display_power_is_enabled(dev_priv, domain)) {
|
|
__intel_display_power_get_domain(dev_priv, domain);
|
|
is_enabled = true;
|
|
} else {
|
|
is_enabled = false;
|
|
}
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
if (!is_enabled) {
|
|
intel_runtime_pm_put(dev_priv, wakeref);
|
|
wakeref = 0;
|
|
}
|
|
|
|
return wakeref;
|
|
}
|
|
|
|
static void
|
|
__intel_display_power_put_domain(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
struct i915_power_domains *power_domains;
|
|
struct i915_power_well *power_well;
|
|
const char *name = intel_display_power_domain_str(domain);
|
|
|
|
power_domains = &dev_priv->power_domains;
|
|
|
|
WARN(!power_domains->domain_use_count[domain],
|
|
"Use count on domain %s is already zero\n",
|
|
name);
|
|
WARN(async_put_domains_mask(power_domains) & BIT_ULL(domain),
|
|
"Async disabling of domain %s is pending\n",
|
|
name);
|
|
|
|
power_domains->domain_use_count[domain]--;
|
|
|
|
for_each_power_domain_well_reverse(dev_priv, power_well, BIT_ULL(domain))
|
|
intel_power_well_put(dev_priv, power_well);
|
|
}
|
|
|
|
static void __intel_display_power_put(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
__intel_display_power_put_domain(dev_priv, domain);
|
|
mutex_unlock(&power_domains->lock);
|
|
}
|
|
|
|
/**
|
|
* intel_display_power_put_unchecked - release an unchecked power domain reference
|
|
* @dev_priv: i915 device instance
|
|
* @domain: power domain to reference
|
|
*
|
|
* This function drops the power domain reference obtained by
|
|
* intel_display_power_get() and might power down the corresponding hardware
|
|
* block right away if this is the last reference.
|
|
*
|
|
* This function exists only for historical reasons and should be avoided in
|
|
* new code, as the correctness of its use cannot be checked. Always use
|
|
* intel_display_power_put() instead.
|
|
*/
|
|
void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain)
|
|
{
|
|
__intel_display_power_put(dev_priv, domain);
|
|
intel_runtime_pm_put_unchecked(dev_priv);
|
|
}
|
|
|
|
static void
|
|
queue_async_put_domains_work(struct i915_power_domains *power_domains,
|
|
intel_wakeref_t wakeref)
|
|
{
|
|
WARN_ON(power_domains->async_put_wakeref);
|
|
power_domains->async_put_wakeref = wakeref;
|
|
WARN_ON(!queue_delayed_work(system_unbound_wq,
|
|
&power_domains->async_put_work,
|
|
msecs_to_jiffies(100)));
|
|
}
|
|
|
|
static void
|
|
release_async_put_domains(struct i915_power_domains *power_domains, u64 mask)
|
|
{
|
|
struct drm_i915_private *dev_priv =
|
|
container_of(power_domains, struct drm_i915_private,
|
|
power_domains);
|
|
enum intel_display_power_domain domain;
|
|
intel_wakeref_t wakeref;
|
|
|
|
/*
|
|
* The caller must hold already raw wakeref, upgrade that to a proper
|
|
* wakeref to make the state checker happy about the HW access during
|
|
* power well disabling.
|
|
*/
|
|
assert_rpm_raw_wakeref_held(dev_priv);
|
|
wakeref = intel_runtime_pm_get(dev_priv);
|
|
|
|
for_each_power_domain(domain, mask) {
|
|
/* Clear before put, so put's sanity check is happy. */
|
|
async_put_domains_clear_domain(power_domains, domain);
|
|
__intel_display_power_put_domain(dev_priv, domain);
|
|
}
|
|
|
|
intel_runtime_pm_put(dev_priv, wakeref);
|
|
}
|
|
|
|
static void
|
|
intel_display_power_put_async_work(struct work_struct *work)
|
|
{
|
|
struct drm_i915_private *dev_priv =
|
|
container_of(work, struct drm_i915_private,
|
|
power_domains.async_put_work.work);
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
intel_wakeref_t new_work_wakeref = intel_runtime_pm_get_raw(dev_priv);
|
|
intel_wakeref_t old_work_wakeref = 0;
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
/*
|
|
* Bail out if all the domain refs pending to be released were grabbed
|
|
* by subsequent gets or a flush_work.
|
|
*/
|
|
old_work_wakeref = fetch_and_zero(&power_domains->async_put_wakeref);
|
|
if (!old_work_wakeref)
|
|
goto out_verify;
|
|
|
|
release_async_put_domains(power_domains,
|
|
power_domains->async_put_domains[0]);
|
|
|
|
/* Requeue the work if more domains were async put meanwhile. */
|
|
if (power_domains->async_put_domains[1]) {
|
|
power_domains->async_put_domains[0] =
|
|
fetch_and_zero(&power_domains->async_put_domains[1]);
|
|
queue_async_put_domains_work(power_domains,
|
|
fetch_and_zero(&new_work_wakeref));
|
|
}
|
|
|
|
out_verify:
|
|
verify_async_put_domains_state(power_domains);
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
if (old_work_wakeref)
|
|
intel_runtime_pm_put_raw(dev_priv, old_work_wakeref);
|
|
if (new_work_wakeref)
|
|
intel_runtime_pm_put_raw(dev_priv, new_work_wakeref);
|
|
}
|
|
|
|
/**
|
|
* intel_display_power_put_async - release a power domain reference asynchronously
|
|
* @i915: i915 device instance
|
|
* @domain: power domain to reference
|
|
* @wakeref: wakeref acquired for the reference that is being released
|
|
*
|
|
* This function drops the power domain reference obtained by
|
|
* intel_display_power_get*() and schedules a work to power down the
|
|
* corresponding hardware block if this is the last reference.
|
|
*/
|
|
void __intel_display_power_put_async(struct drm_i915_private *i915,
|
|
enum intel_display_power_domain domain,
|
|
intel_wakeref_t wakeref)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->power_domains;
|
|
intel_wakeref_t work_wakeref = intel_runtime_pm_get_raw(i915);
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
if (power_domains->domain_use_count[domain] > 1) {
|
|
__intel_display_power_put_domain(i915, domain);
|
|
|
|
goto out_verify;
|
|
}
|
|
|
|
WARN_ON(power_domains->domain_use_count[domain] != 1);
|
|
|
|
/* Let a pending work requeue itself or queue a new one. */
|
|
if (power_domains->async_put_wakeref) {
|
|
power_domains->async_put_domains[1] |= BIT_ULL(domain);
|
|
} else {
|
|
power_domains->async_put_domains[0] |= BIT_ULL(domain);
|
|
queue_async_put_domains_work(power_domains,
|
|
fetch_and_zero(&work_wakeref));
|
|
}
|
|
|
|
out_verify:
|
|
verify_async_put_domains_state(power_domains);
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
if (work_wakeref)
|
|
intel_runtime_pm_put_raw(i915, work_wakeref);
|
|
|
|
intel_runtime_pm_put(i915, wakeref);
|
|
}
|
|
|
|
/**
|
|
* intel_display_power_flush_work - flushes the async display power disabling work
|
|
* @i915: i915 device instance
|
|
*
|
|
* Flushes any pending work that was scheduled by a preceding
|
|
* intel_display_power_put_async() call, completing the disabling of the
|
|
* corresponding power domains.
|
|
*
|
|
* Note that the work handler function may still be running after this
|
|
* function returns; to ensure that the work handler isn't running use
|
|
* intel_display_power_flush_work_sync() instead.
|
|
*/
|
|
void intel_display_power_flush_work(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->power_domains;
|
|
intel_wakeref_t work_wakeref;
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
work_wakeref = fetch_and_zero(&power_domains->async_put_wakeref);
|
|
if (!work_wakeref)
|
|
goto out_verify;
|
|
|
|
release_async_put_domains(power_domains,
|
|
async_put_domains_mask(power_domains));
|
|
cancel_delayed_work(&power_domains->async_put_work);
|
|
|
|
out_verify:
|
|
verify_async_put_domains_state(power_domains);
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
if (work_wakeref)
|
|
intel_runtime_pm_put_raw(i915, work_wakeref);
|
|
}
|
|
|
|
/**
|
|
* intel_display_power_flush_work_sync - flushes and syncs the async display power disabling work
|
|
* @i915: i915 device instance
|
|
*
|
|
* Like intel_display_power_flush_work(), but also ensure that the work
|
|
* handler function is not running any more when this function returns.
|
|
*/
|
|
static void
|
|
intel_display_power_flush_work_sync(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->power_domains;
|
|
|
|
intel_display_power_flush_work(i915);
|
|
cancel_delayed_work_sync(&power_domains->async_put_work);
|
|
|
|
verify_async_put_domains_state(power_domains);
|
|
|
|
WARN_ON(power_domains->async_put_wakeref);
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
|
|
/**
|
|
* intel_display_power_put - release a power domain reference
|
|
* @dev_priv: i915 device instance
|
|
* @domain: power domain to reference
|
|
* @wakeref: wakeref acquired for the reference that is being released
|
|
*
|
|
* This function drops the power domain reference obtained by
|
|
* intel_display_power_get() and might power down the corresponding hardware
|
|
* block right away if this is the last reference.
|
|
*/
|
|
void intel_display_power_put(struct drm_i915_private *dev_priv,
|
|
enum intel_display_power_domain domain,
|
|
intel_wakeref_t wakeref)
|
|
{
|
|
__intel_display_power_put(dev_priv, domain);
|
|
intel_runtime_pm_put(dev_priv, wakeref);
|
|
}
|
|
#endif
|
|
|
|
#define I830_PIPES_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_A) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
#define VLV_DISPLAY_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_DISPLAY_CORE) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_A) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DSI) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_CRT) | \
|
|
BIT_ULL(POWER_DOMAIN_VGA) | \
|
|
BIT_ULL(POWER_DOMAIN_AUDIO) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_B) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_C) | \
|
|
BIT_ULL(POWER_DOMAIN_GMBUS) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
#define VLV_DPIO_CMN_BC_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_CRT) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_B) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_C) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
#define VLV_DPIO_TX_B_LANES_01_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_B) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
#define VLV_DPIO_TX_B_LANES_23_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_B) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
#define VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_C) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
#define VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_C) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
#define CHV_DISPLAY_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_DISPLAY_CORE) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_A) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DSI) | \
|
|
BIT_ULL(POWER_DOMAIN_VGA) | \
|
|
BIT_ULL(POWER_DOMAIN_AUDIO) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_B) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_C) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_D) | \
|
|
BIT_ULL(POWER_DOMAIN_GMBUS) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
#define CHV_DPIO_CMN_BC_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_B) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_C) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
#define CHV_DPIO_CMN_D_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_D) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
#define HSW_DISPLAY_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_A_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_CRT) | /* DDI E */ \
|
|
BIT_ULL(POWER_DOMAIN_VGA) | \
|
|
BIT_ULL(POWER_DOMAIN_AUDIO) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
#define BDW_DISPLAY_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_CRT) | /* DDI E */ \
|
|
BIT_ULL(POWER_DOMAIN_VGA) | \
|
|
BIT_ULL(POWER_DOMAIN_AUDIO) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
#define SKL_DISPLAY_POWERWELL_2_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_E_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_B) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_C) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_D) | \
|
|
BIT_ULL(POWER_DOMAIN_AUDIO) | \
|
|
BIT_ULL(POWER_DOMAIN_VGA) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define SKL_DISPLAY_DDI_IO_A_E_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_E_IO) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define SKL_DISPLAY_DDI_IO_B_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define SKL_DISPLAY_DDI_IO_C_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define SKL_DISPLAY_DDI_IO_D_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_IO) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define SKL_DISPLAY_DC_OFF_POWER_DOMAINS ( \
|
|
SKL_DISPLAY_POWERWELL_2_POWER_DOMAINS | \
|
|
BIT_ULL(POWER_DOMAIN_GT_IRQ) | \
|
|
BIT_ULL(POWER_DOMAIN_MODESET) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_A) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
#define BXT_DISPLAY_POWERWELL_2_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_B) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_C) | \
|
|
BIT_ULL(POWER_DOMAIN_AUDIO) | \
|
|
BIT_ULL(POWER_DOMAIN_VGA) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define BXT_DISPLAY_DC_OFF_POWER_DOMAINS ( \
|
|
BXT_DISPLAY_POWERWELL_2_POWER_DOMAINS | \
|
|
BIT_ULL(POWER_DOMAIN_GT_IRQ) | \
|
|
BIT_ULL(POWER_DOMAIN_MODESET) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_A) | \
|
|
BIT_ULL(POWER_DOMAIN_GMBUS) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define BXT_DPIO_CMN_A_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_A_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_A) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define BXT_DPIO_CMN_BC_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_B) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_C) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
#define GLK_DISPLAY_POWERWELL_2_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_B) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_C) | \
|
|
BIT_ULL(POWER_DOMAIN_AUDIO) | \
|
|
BIT_ULL(POWER_DOMAIN_VGA) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define GLK_DISPLAY_DDI_IO_A_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO))
|
|
#define GLK_DISPLAY_DDI_IO_B_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO))
|
|
#define GLK_DISPLAY_DDI_IO_C_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO))
|
|
#define GLK_DPIO_CMN_A_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_A_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_A) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define GLK_DPIO_CMN_B_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_B) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define GLK_DPIO_CMN_C_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_C) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define GLK_DISPLAY_AUX_A_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_A) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_IO_A) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define GLK_DISPLAY_AUX_B_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_B) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define GLK_DISPLAY_AUX_C_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_C) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define GLK_DISPLAY_DC_OFF_POWER_DOMAINS ( \
|
|
GLK_DISPLAY_POWERWELL_2_POWER_DOMAINS | \
|
|
BIT_ULL(POWER_DOMAIN_GT_IRQ) | \
|
|
BIT_ULL(POWER_DOMAIN_MODESET) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_A) | \
|
|
BIT_ULL(POWER_DOMAIN_GMBUS) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
#define CNL_DISPLAY_POWERWELL_2_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_F_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_B) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_C) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_D) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_F) | \
|
|
BIT_ULL(POWER_DOMAIN_AUDIO) | \
|
|
BIT_ULL(POWER_DOMAIN_VGA) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define CNL_DISPLAY_DDI_A_IO_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define CNL_DISPLAY_DDI_B_IO_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define CNL_DISPLAY_DDI_C_IO_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define CNL_DISPLAY_DDI_D_IO_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_IO) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define CNL_DISPLAY_AUX_A_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_A) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_IO_A) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define CNL_DISPLAY_AUX_B_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_B) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define CNL_DISPLAY_AUX_C_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_C) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define CNL_DISPLAY_AUX_D_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_D) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define CNL_DISPLAY_AUX_F_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_F) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define CNL_DISPLAY_DDI_F_IO_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_F_IO) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
#define CNL_DISPLAY_DC_OFF_POWER_DOMAINS ( \
|
|
CNL_DISPLAY_POWERWELL_2_POWER_DOMAINS | \
|
|
BIT_ULL(POWER_DOMAIN_GT_IRQ) | \
|
|
BIT_ULL(POWER_DOMAIN_MODESET) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_A) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
/*
|
|
* ICL PW_0/PG_0 domains (HW/DMC control):
|
|
* - PCI
|
|
* - clocks except port PLL
|
|
* - central power except FBC
|
|
* - shared functions except pipe interrupts, pipe MBUS, DBUF registers
|
|
* ICL PW_1/PG_1 domains (HW/DMC control):
|
|
* - DBUF function
|
|
* - PIPE_A and its planes, except VGA
|
|
* - transcoder EDP + PSR
|
|
* - transcoder DSI
|
|
* - DDI_A
|
|
* - FBC
|
|
*/
|
|
#define ICL_PW_4_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_C) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
/* VDSC/joining */
|
|
#define ICL_PW_3_POWER_DOMAINS ( \
|
|
ICL_PW_4_POWER_DOMAINS | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_A) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_B) | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_C) | \
|
|
BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_IO) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_E_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_E_IO) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_F_LANES) | \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_F_IO) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_B) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_C) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_D) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_E) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_F) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_TBT1) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_TBT2) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_TBT3) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_TBT4) | \
|
|
BIT_ULL(POWER_DOMAIN_VGA) | \
|
|
BIT_ULL(POWER_DOMAIN_AUDIO) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
/*
|
|
* - transcoder WD
|
|
* - KVMR (HW control)
|
|
*/
|
|
#define ICL_PW_2_POWER_DOMAINS ( \
|
|
ICL_PW_3_POWER_DOMAINS | \
|
|
BIT_ULL(POWER_DOMAIN_TRANSCODER_EDP_VDSC) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
/*
|
|
* - KVMR (HW control)
|
|
*/
|
|
#define ICL_DISPLAY_DC_OFF_POWER_DOMAINS ( \
|
|
ICL_PW_2_POWER_DOMAINS | \
|
|
BIT_ULL(POWER_DOMAIN_MODESET) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_A) | \
|
|
BIT_ULL(POWER_DOMAIN_INIT))
|
|
|
|
#define ICL_DDI_IO_A_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_A_IO))
|
|
#define ICL_DDI_IO_B_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_B_IO))
|
|
#define ICL_DDI_IO_C_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_C_IO))
|
|
#define ICL_DDI_IO_D_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_D_IO))
|
|
#define ICL_DDI_IO_E_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_E_IO))
|
|
#define ICL_DDI_IO_F_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_PORT_DDI_F_IO))
|
|
|
|
#define ICL_AUX_A_IO_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_IO_A) | \
|
|
BIT_ULL(POWER_DOMAIN_AUX_A))
|
|
#define ICL_AUX_B_IO_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_B))
|
|
#define ICL_AUX_C_IO_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_C))
|
|
#define ICL_AUX_D_IO_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_D))
|
|
#define ICL_AUX_E_IO_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_E))
|
|
#define ICL_AUX_F_IO_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_F))
|
|
#define ICL_AUX_TBT1_IO_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_TBT1))
|
|
#define ICL_AUX_TBT2_IO_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_TBT2))
|
|
#define ICL_AUX_TBT3_IO_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_TBT3))
|
|
#define ICL_AUX_TBT4_IO_POWER_DOMAINS ( \
|
|
BIT_ULL(POWER_DOMAIN_AUX_TBT4))
|
|
|
|
static const struct i915_power_well_ops i9xx_always_on_power_well_ops = {
|
|
.sync_hw = i9xx_power_well_sync_hw_noop,
|
|
.enable = i9xx_always_on_power_well_noop,
|
|
.disable = i9xx_always_on_power_well_noop,
|
|
.is_enabled = i9xx_always_on_power_well_enabled,
|
|
};
|
|
|
|
static const struct i915_power_well_ops chv_pipe_power_well_ops = {
|
|
.sync_hw = i9xx_power_well_sync_hw_noop,
|
|
.enable = chv_pipe_power_well_enable,
|
|
.disable = chv_pipe_power_well_disable,
|
|
.is_enabled = chv_pipe_power_well_enabled,
|
|
};
|
|
|
|
static const struct i915_power_well_ops chv_dpio_cmn_power_well_ops = {
|
|
.sync_hw = i9xx_power_well_sync_hw_noop,
|
|
.enable = chv_dpio_cmn_power_well_enable,
|
|
.disable = chv_dpio_cmn_power_well_disable,
|
|
.is_enabled = vlv_power_well_enabled,
|
|
};
|
|
|
|
static const struct i915_power_well_desc i9xx_always_on_power_well[] = {
|
|
{
|
|
.name = "always-on",
|
|
.always_on = true,
|
|
.domains = POWER_DOMAIN_MASK,
|
|
.ops = &i9xx_always_on_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
};
|
|
|
|
static const struct i915_power_well_ops i830_pipes_power_well_ops = {
|
|
.sync_hw = i830_pipes_power_well_sync_hw,
|
|
.enable = i830_pipes_power_well_enable,
|
|
.disable = i830_pipes_power_well_disable,
|
|
.is_enabled = i830_pipes_power_well_enabled,
|
|
};
|
|
|
|
static const struct i915_power_well_desc i830_power_wells[] = {
|
|
{
|
|
.name = "always-on",
|
|
.always_on = true,
|
|
.domains = POWER_DOMAIN_MASK,
|
|
.ops = &i9xx_always_on_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
{
|
|
.name = "pipes",
|
|
.domains = I830_PIPES_POWER_DOMAINS,
|
|
.ops = &i830_pipes_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
};
|
|
|
|
static const struct i915_power_well_ops hsw_power_well_ops = {
|
|
.sync_hw = hsw_power_well_sync_hw,
|
|
.enable = hsw_power_well_enable,
|
|
.disable = hsw_power_well_disable,
|
|
.is_enabled = hsw_power_well_enabled,
|
|
};
|
|
|
|
static const struct i915_power_well_ops gen9_dc_off_power_well_ops = {
|
|
.sync_hw = i9xx_power_well_sync_hw_noop,
|
|
.enable = gen9_dc_off_power_well_enable,
|
|
.disable = gen9_dc_off_power_well_disable,
|
|
.is_enabled = gen9_dc_off_power_well_enabled,
|
|
};
|
|
|
|
static const struct i915_power_well_ops bxt_dpio_cmn_power_well_ops = {
|
|
.sync_hw = i9xx_power_well_sync_hw_noop,
|
|
.enable = bxt_dpio_cmn_power_well_enable,
|
|
.disable = bxt_dpio_cmn_power_well_disable,
|
|
.is_enabled = bxt_dpio_cmn_power_well_enabled,
|
|
};
|
|
|
|
static const struct i915_power_well_regs hsw_power_well_regs = {
|
|
.bios = HSW_PWR_WELL_CTL1,
|
|
.driver = HSW_PWR_WELL_CTL2,
|
|
.kvmr = HSW_PWR_WELL_CTL3,
|
|
.debug = HSW_PWR_WELL_CTL4,
|
|
};
|
|
|
|
static const struct i915_power_well_desc hsw_power_wells[] = {
|
|
{
|
|
.name = "always-on",
|
|
.always_on = true,
|
|
.domains = POWER_DOMAIN_MASK,
|
|
.ops = &i9xx_always_on_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
{
|
|
.name = "display",
|
|
.domains = HSW_DISPLAY_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = HSW_DISP_PW_GLOBAL,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = HSW_PW_CTL_IDX_GLOBAL,
|
|
.hsw.has_vga = true,
|
|
},
|
|
},
|
|
};
|
|
|
|
static const struct i915_power_well_desc bdw_power_wells[] = {
|
|
{
|
|
.name = "always-on",
|
|
.always_on = true,
|
|
.domains = POWER_DOMAIN_MASK,
|
|
.ops = &i9xx_always_on_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
{
|
|
.name = "display",
|
|
.domains = BDW_DISPLAY_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = HSW_DISP_PW_GLOBAL,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = HSW_PW_CTL_IDX_GLOBAL,
|
|
.hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
|
|
.hsw.has_vga = true,
|
|
},
|
|
},
|
|
};
|
|
|
|
static const struct i915_power_well_ops vlv_display_power_well_ops = {
|
|
.sync_hw = i9xx_power_well_sync_hw_noop,
|
|
.enable = vlv_display_power_well_enable,
|
|
.disable = vlv_display_power_well_disable,
|
|
.is_enabled = vlv_power_well_enabled,
|
|
};
|
|
|
|
static const struct i915_power_well_ops vlv_dpio_cmn_power_well_ops = {
|
|
.sync_hw = i9xx_power_well_sync_hw_noop,
|
|
.enable = vlv_dpio_cmn_power_well_enable,
|
|
.disable = vlv_dpio_cmn_power_well_disable,
|
|
.is_enabled = vlv_power_well_enabled,
|
|
};
|
|
|
|
static const struct i915_power_well_ops vlv_dpio_power_well_ops = {
|
|
.sync_hw = i9xx_power_well_sync_hw_noop,
|
|
.enable = vlv_power_well_enable,
|
|
.disable = vlv_power_well_disable,
|
|
.is_enabled = vlv_power_well_enabled,
|
|
};
|
|
|
|
static const struct i915_power_well_desc vlv_power_wells[] = {
|
|
{
|
|
.name = "always-on",
|
|
.always_on = true,
|
|
.domains = POWER_DOMAIN_MASK,
|
|
.ops = &i9xx_always_on_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
{
|
|
.name = "display",
|
|
.domains = VLV_DISPLAY_POWER_DOMAINS,
|
|
.ops = &vlv_display_power_well_ops,
|
|
.id = VLV_DISP_PW_DISP2D,
|
|
{
|
|
.vlv.idx = PUNIT_PWGT_IDX_DISP2D,
|
|
},
|
|
},
|
|
{
|
|
.name = "dpio-tx-b-01",
|
|
.domains = VLV_DPIO_TX_B_LANES_01_POWER_DOMAINS |
|
|
VLV_DPIO_TX_B_LANES_23_POWER_DOMAINS |
|
|
VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS |
|
|
VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS,
|
|
.ops = &vlv_dpio_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_B_LANES_01,
|
|
},
|
|
},
|
|
{
|
|
.name = "dpio-tx-b-23",
|
|
.domains = VLV_DPIO_TX_B_LANES_01_POWER_DOMAINS |
|
|
VLV_DPIO_TX_B_LANES_23_POWER_DOMAINS |
|
|
VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS |
|
|
VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS,
|
|
.ops = &vlv_dpio_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_B_LANES_23,
|
|
},
|
|
},
|
|
{
|
|
.name = "dpio-tx-c-01",
|
|
.domains = VLV_DPIO_TX_B_LANES_01_POWER_DOMAINS |
|
|
VLV_DPIO_TX_B_LANES_23_POWER_DOMAINS |
|
|
VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS |
|
|
VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS,
|
|
.ops = &vlv_dpio_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_C_LANES_01,
|
|
},
|
|
},
|
|
{
|
|
.name = "dpio-tx-c-23",
|
|
.domains = VLV_DPIO_TX_B_LANES_01_POWER_DOMAINS |
|
|
VLV_DPIO_TX_B_LANES_23_POWER_DOMAINS |
|
|
VLV_DPIO_TX_C_LANES_01_POWER_DOMAINS |
|
|
VLV_DPIO_TX_C_LANES_23_POWER_DOMAINS,
|
|
.ops = &vlv_dpio_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.vlv.idx = PUNIT_PWGT_IDX_DPIO_TX_C_LANES_23,
|
|
},
|
|
},
|
|
{
|
|
.name = "dpio-common",
|
|
.domains = VLV_DPIO_CMN_BC_POWER_DOMAINS,
|
|
.ops = &vlv_dpio_cmn_power_well_ops,
|
|
.id = VLV_DISP_PW_DPIO_CMN_BC,
|
|
{
|
|
.vlv.idx = PUNIT_PWGT_IDX_DPIO_CMN_BC,
|
|
},
|
|
},
|
|
};
|
|
|
|
static const struct i915_power_well_desc chv_power_wells[] = {
|
|
{
|
|
.name = "always-on",
|
|
.always_on = true,
|
|
.domains = POWER_DOMAIN_MASK,
|
|
.ops = &i9xx_always_on_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
{
|
|
.name = "display",
|
|
/*
|
|
* Pipe A power well is the new disp2d well. Pipe B and C
|
|
* power wells don't actually exist. Pipe A power well is
|
|
* required for any pipe to work.
|
|
*/
|
|
.domains = CHV_DISPLAY_POWER_DOMAINS,
|
|
.ops = &chv_pipe_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
{
|
|
.name = "dpio-common-bc",
|
|
.domains = CHV_DPIO_CMN_BC_POWER_DOMAINS,
|
|
.ops = &chv_dpio_cmn_power_well_ops,
|
|
.id = VLV_DISP_PW_DPIO_CMN_BC,
|
|
{
|
|
.vlv.idx = PUNIT_PWGT_IDX_DPIO_CMN_BC,
|
|
},
|
|
},
|
|
{
|
|
.name = "dpio-common-d",
|
|
.domains = CHV_DPIO_CMN_D_POWER_DOMAINS,
|
|
.ops = &chv_dpio_cmn_power_well_ops,
|
|
.id = CHV_DISP_PW_DPIO_CMN_D,
|
|
{
|
|
.vlv.idx = PUNIT_PWGT_IDX_DPIO_CMN_D,
|
|
},
|
|
},
|
|
};
|
|
|
|
bool intel_display_power_well_is_enabled(struct drm_i915_private *dev_priv,
|
|
enum i915_power_well_id power_well_id)
|
|
{
|
|
struct i915_power_well *power_well;
|
|
bool ret;
|
|
|
|
power_well = lookup_power_well(dev_priv, power_well_id);
|
|
ret = power_well->desc->ops->is_enabled(dev_priv, power_well);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct i915_power_well_desc skl_power_wells[] = {
|
|
{
|
|
.name = "always-on",
|
|
.always_on = true,
|
|
.domains = POWER_DOMAIN_MASK,
|
|
.ops = &i9xx_always_on_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
{
|
|
.name = "power well 1",
|
|
/* Handled by the DMC firmware */
|
|
.always_on = true,
|
|
.domains = 0,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = SKL_DISP_PW_1,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_PW_1,
|
|
.hsw.has_fuses = true,
|
|
},
|
|
},
|
|
{
|
|
.name = "MISC IO power well",
|
|
/* Handled by the DMC firmware */
|
|
.always_on = true,
|
|
.domains = 0,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = SKL_DISP_PW_MISC_IO,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_MISC_IO,
|
|
},
|
|
},
|
|
{
|
|
.name = "DC off",
|
|
.domains = SKL_DISPLAY_DC_OFF_POWER_DOMAINS,
|
|
.ops = &gen9_dc_off_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
{
|
|
.name = "power well 2",
|
|
.domains = SKL_DISPLAY_POWERWELL_2_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = SKL_DISP_PW_2,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_PW_2,
|
|
.hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
|
|
.hsw.has_vga = true,
|
|
.hsw.has_fuses = true,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI A/E IO power well",
|
|
.domains = SKL_DISPLAY_DDI_IO_A_E_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_DDI_A_E,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI B IO power well",
|
|
.domains = SKL_DISPLAY_DDI_IO_B_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_DDI_B,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI C IO power well",
|
|
.domains = SKL_DISPLAY_DDI_IO_C_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_DDI_C,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI D IO power well",
|
|
.domains = SKL_DISPLAY_DDI_IO_D_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_DDI_D,
|
|
},
|
|
},
|
|
};
|
|
|
|
static const struct i915_power_well_desc bxt_power_wells[] = {
|
|
{
|
|
.name = "always-on",
|
|
.always_on = true,
|
|
.domains = POWER_DOMAIN_MASK,
|
|
.ops = &i9xx_always_on_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
{
|
|
.name = "power well 1",
|
|
/* Handled by the DMC firmware */
|
|
.always_on = true,
|
|
.domains = 0,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = SKL_DISP_PW_1,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_PW_1,
|
|
.hsw.has_fuses = true,
|
|
},
|
|
},
|
|
{
|
|
.name = "DC off",
|
|
.domains = BXT_DISPLAY_DC_OFF_POWER_DOMAINS,
|
|
.ops = &gen9_dc_off_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
{
|
|
.name = "power well 2",
|
|
.domains = BXT_DISPLAY_POWERWELL_2_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = SKL_DISP_PW_2,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_PW_2,
|
|
.hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
|
|
.hsw.has_vga = true,
|
|
.hsw.has_fuses = true,
|
|
},
|
|
},
|
|
{
|
|
.name = "dpio-common-a",
|
|
.domains = BXT_DPIO_CMN_A_POWER_DOMAINS,
|
|
.ops = &bxt_dpio_cmn_power_well_ops,
|
|
.id = BXT_DISP_PW_DPIO_CMN_A,
|
|
{
|
|
.bxt.phy = DPIO_PHY1,
|
|
},
|
|
},
|
|
{
|
|
.name = "dpio-common-bc",
|
|
.domains = BXT_DPIO_CMN_BC_POWER_DOMAINS,
|
|
.ops = &bxt_dpio_cmn_power_well_ops,
|
|
.id = VLV_DISP_PW_DPIO_CMN_BC,
|
|
{
|
|
.bxt.phy = DPIO_PHY0,
|
|
},
|
|
},
|
|
};
|
|
|
|
static const struct i915_power_well_desc glk_power_wells[] = {
|
|
{
|
|
.name = "always-on",
|
|
.always_on = true,
|
|
.domains = POWER_DOMAIN_MASK,
|
|
.ops = &i9xx_always_on_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
{
|
|
.name = "power well 1",
|
|
/* Handled by the DMC firmware */
|
|
.always_on = true,
|
|
.domains = 0,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = SKL_DISP_PW_1,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_PW_1,
|
|
.hsw.has_fuses = true,
|
|
},
|
|
},
|
|
{
|
|
.name = "DC off",
|
|
.domains = GLK_DISPLAY_DC_OFF_POWER_DOMAINS,
|
|
.ops = &gen9_dc_off_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
{
|
|
.name = "power well 2",
|
|
.domains = GLK_DISPLAY_POWERWELL_2_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = SKL_DISP_PW_2,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_PW_2,
|
|
.hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
|
|
.hsw.has_vga = true,
|
|
.hsw.has_fuses = true,
|
|
},
|
|
},
|
|
{
|
|
.name = "dpio-common-a",
|
|
.domains = GLK_DPIO_CMN_A_POWER_DOMAINS,
|
|
.ops = &bxt_dpio_cmn_power_well_ops,
|
|
.id = BXT_DISP_PW_DPIO_CMN_A,
|
|
{
|
|
.bxt.phy = DPIO_PHY1,
|
|
},
|
|
},
|
|
{
|
|
.name = "dpio-common-b",
|
|
.domains = GLK_DPIO_CMN_B_POWER_DOMAINS,
|
|
.ops = &bxt_dpio_cmn_power_well_ops,
|
|
.id = VLV_DISP_PW_DPIO_CMN_BC,
|
|
{
|
|
.bxt.phy = DPIO_PHY0,
|
|
},
|
|
},
|
|
{
|
|
.name = "dpio-common-c",
|
|
.domains = GLK_DPIO_CMN_C_POWER_DOMAINS,
|
|
.ops = &bxt_dpio_cmn_power_well_ops,
|
|
.id = GLK_DISP_PW_DPIO_CMN_C,
|
|
{
|
|
.bxt.phy = DPIO_PHY2,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX A",
|
|
.domains = GLK_DISPLAY_AUX_A_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = GLK_PW_CTL_IDX_AUX_A,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX B",
|
|
.domains = GLK_DISPLAY_AUX_B_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = GLK_PW_CTL_IDX_AUX_B,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX C",
|
|
.domains = GLK_DISPLAY_AUX_C_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = GLK_PW_CTL_IDX_AUX_C,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI A IO power well",
|
|
.domains = GLK_DISPLAY_DDI_IO_A_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = GLK_PW_CTL_IDX_DDI_A,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI B IO power well",
|
|
.domains = GLK_DISPLAY_DDI_IO_B_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_DDI_B,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI C IO power well",
|
|
.domains = GLK_DISPLAY_DDI_IO_C_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_DDI_C,
|
|
},
|
|
},
|
|
};
|
|
|
|
static const struct i915_power_well_desc cnl_power_wells[] = {
|
|
{
|
|
.name = "always-on",
|
|
.always_on = true,
|
|
.domains = POWER_DOMAIN_MASK,
|
|
.ops = &i9xx_always_on_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
{
|
|
.name = "power well 1",
|
|
/* Handled by the DMC firmware */
|
|
.always_on = true,
|
|
.domains = 0,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = SKL_DISP_PW_1,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_PW_1,
|
|
.hsw.has_fuses = true,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX A",
|
|
.domains = CNL_DISPLAY_AUX_A_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = GLK_PW_CTL_IDX_AUX_A,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX B",
|
|
.domains = CNL_DISPLAY_AUX_B_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = GLK_PW_CTL_IDX_AUX_B,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX C",
|
|
.domains = CNL_DISPLAY_AUX_C_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = GLK_PW_CTL_IDX_AUX_C,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX D",
|
|
.domains = CNL_DISPLAY_AUX_D_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = CNL_PW_CTL_IDX_AUX_D,
|
|
},
|
|
},
|
|
{
|
|
.name = "DC off",
|
|
.domains = CNL_DISPLAY_DC_OFF_POWER_DOMAINS,
|
|
.ops = &gen9_dc_off_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
{
|
|
.name = "power well 2",
|
|
.domains = CNL_DISPLAY_POWERWELL_2_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = SKL_DISP_PW_2,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_PW_2,
|
|
.hsw.irq_pipe_mask = BIT(PIPE_B) | BIT(PIPE_C),
|
|
.hsw.has_vga = true,
|
|
.hsw.has_fuses = true,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI A IO power well",
|
|
.domains = CNL_DISPLAY_DDI_A_IO_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = GLK_PW_CTL_IDX_DDI_A,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI B IO power well",
|
|
.domains = CNL_DISPLAY_DDI_B_IO_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_DDI_B,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI C IO power well",
|
|
.domains = CNL_DISPLAY_DDI_C_IO_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_DDI_C,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI D IO power well",
|
|
.domains = CNL_DISPLAY_DDI_D_IO_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = SKL_PW_CTL_IDX_DDI_D,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI F IO power well",
|
|
.domains = CNL_DISPLAY_DDI_F_IO_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = CNL_PW_CTL_IDX_DDI_F,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX F",
|
|
.domains = CNL_DISPLAY_AUX_F_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = CNL_PW_CTL_IDX_AUX_F,
|
|
},
|
|
},
|
|
};
|
|
|
|
static const struct i915_power_well_ops icl_combo_phy_aux_power_well_ops = {
|
|
.sync_hw = hsw_power_well_sync_hw,
|
|
.enable = icl_combo_phy_aux_power_well_enable,
|
|
.disable = icl_combo_phy_aux_power_well_disable,
|
|
.is_enabled = hsw_power_well_enabled,
|
|
};
|
|
|
|
static const struct i915_power_well_ops icl_tc_phy_aux_power_well_ops = {
|
|
.sync_hw = hsw_power_well_sync_hw,
|
|
.enable = icl_tc_phy_aux_power_well_enable,
|
|
.disable = hsw_power_well_disable,
|
|
.is_enabled = hsw_power_well_enabled,
|
|
};
|
|
|
|
static const struct i915_power_well_regs icl_aux_power_well_regs = {
|
|
.bios = ICL_PWR_WELL_CTL_AUX1,
|
|
.driver = ICL_PWR_WELL_CTL_AUX2,
|
|
.debug = ICL_PWR_WELL_CTL_AUX4,
|
|
};
|
|
|
|
static const struct i915_power_well_regs icl_ddi_power_well_regs = {
|
|
.bios = ICL_PWR_WELL_CTL_DDI1,
|
|
.driver = ICL_PWR_WELL_CTL_DDI2,
|
|
.debug = ICL_PWR_WELL_CTL_DDI4,
|
|
};
|
|
|
|
static const struct i915_power_well_desc icl_power_wells[] = {
|
|
{
|
|
.name = "always-on",
|
|
.always_on = true,
|
|
.domains = POWER_DOMAIN_MASK,
|
|
.ops = &i9xx_always_on_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
{
|
|
.name = "power well 1",
|
|
/* Handled by the DMC firmware */
|
|
.always_on = true,
|
|
.domains = 0,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = SKL_DISP_PW_1,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_PW_1,
|
|
.hsw.has_fuses = true,
|
|
},
|
|
},
|
|
{
|
|
.name = "DC off",
|
|
.domains = ICL_DISPLAY_DC_OFF_POWER_DOMAINS,
|
|
.ops = &gen9_dc_off_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
},
|
|
{
|
|
.name = "power well 2",
|
|
.domains = ICL_PW_2_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = SKL_DISP_PW_2,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_PW_2,
|
|
.hsw.has_fuses = true,
|
|
},
|
|
},
|
|
{
|
|
.name = "power well 3",
|
|
.domains = ICL_PW_3_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_PW_3,
|
|
.hsw.irq_pipe_mask = BIT(PIPE_B),
|
|
.hsw.has_vga = true,
|
|
.hsw.has_fuses = true,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI A IO",
|
|
.domains = ICL_DDI_IO_A_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &icl_ddi_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_DDI_A,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI B IO",
|
|
.domains = ICL_DDI_IO_B_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &icl_ddi_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_DDI_B,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI C IO",
|
|
.domains = ICL_DDI_IO_C_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &icl_ddi_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_DDI_C,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI D IO",
|
|
.domains = ICL_DDI_IO_D_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &icl_ddi_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_DDI_D,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI E IO",
|
|
.domains = ICL_DDI_IO_E_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &icl_ddi_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_DDI_E,
|
|
},
|
|
},
|
|
{
|
|
.name = "DDI F IO",
|
|
.domains = ICL_DDI_IO_F_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &icl_ddi_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_DDI_F,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX A",
|
|
.domains = ICL_AUX_A_IO_POWER_DOMAINS,
|
|
.ops = &icl_combo_phy_aux_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &icl_aux_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_AUX_A,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX B",
|
|
.domains = ICL_AUX_B_IO_POWER_DOMAINS,
|
|
.ops = &icl_combo_phy_aux_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &icl_aux_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_AUX_B,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX C",
|
|
.domains = ICL_AUX_C_IO_POWER_DOMAINS,
|
|
.ops = &icl_tc_phy_aux_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &icl_aux_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_AUX_C,
|
|
.hsw.is_tc_tbt = false,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX D",
|
|
.domains = ICL_AUX_D_IO_POWER_DOMAINS,
|
|
.ops = &icl_tc_phy_aux_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &icl_aux_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_AUX_D,
|
|
.hsw.is_tc_tbt = false,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX E",
|
|
.domains = ICL_AUX_E_IO_POWER_DOMAINS,
|
|
.ops = &icl_tc_phy_aux_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &icl_aux_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_AUX_E,
|
|
.hsw.is_tc_tbt = false,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX F",
|
|
.domains = ICL_AUX_F_IO_POWER_DOMAINS,
|
|
.ops = &icl_tc_phy_aux_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &icl_aux_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_AUX_F,
|
|
.hsw.is_tc_tbt = false,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX TBT1",
|
|
.domains = ICL_AUX_TBT1_IO_POWER_DOMAINS,
|
|
.ops = &icl_tc_phy_aux_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &icl_aux_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_AUX_TBT1,
|
|
.hsw.is_tc_tbt = true,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX TBT2",
|
|
.domains = ICL_AUX_TBT2_IO_POWER_DOMAINS,
|
|
.ops = &icl_tc_phy_aux_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &icl_aux_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_AUX_TBT2,
|
|
.hsw.is_tc_tbt = true,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX TBT3",
|
|
.domains = ICL_AUX_TBT3_IO_POWER_DOMAINS,
|
|
.ops = &icl_tc_phy_aux_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &icl_aux_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_AUX_TBT3,
|
|
.hsw.is_tc_tbt = true,
|
|
},
|
|
},
|
|
{
|
|
.name = "AUX TBT4",
|
|
.domains = ICL_AUX_TBT4_IO_POWER_DOMAINS,
|
|
.ops = &icl_tc_phy_aux_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &icl_aux_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_AUX_TBT4,
|
|
.hsw.is_tc_tbt = true,
|
|
},
|
|
},
|
|
{
|
|
.name = "power well 4",
|
|
.domains = ICL_PW_4_POWER_DOMAINS,
|
|
.ops = &hsw_power_well_ops,
|
|
.id = DISP_PW_ID_NONE,
|
|
{
|
|
.hsw.regs = &hsw_power_well_regs,
|
|
.hsw.idx = ICL_PW_CTL_IDX_PW_4,
|
|
.hsw.has_fuses = true,
|
|
.hsw.irq_pipe_mask = BIT(PIPE_C),
|
|
},
|
|
},
|
|
};
|
|
|
|
static int
|
|
sanitize_disable_power_well_option(const struct drm_i915_private *dev_priv,
|
|
int disable_power_well)
|
|
{
|
|
if (disable_power_well >= 0)
|
|
return !!disable_power_well;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static u32 get_allowed_dc_mask(const struct drm_i915_private *dev_priv,
|
|
int enable_dc)
|
|
{
|
|
u32 mask;
|
|
int requested_dc;
|
|
int max_dc;
|
|
|
|
if (INTEL_GEN(dev_priv) >= 11) {
|
|
max_dc = 2;
|
|
/*
|
|
* DC9 has a separate HW flow from the rest of the DC states,
|
|
* not depending on the DMC firmware. It's needed by system
|
|
* suspend/resume, so allow it unconditionally.
|
|
*/
|
|
mask = DC_STATE_EN_DC9;
|
|
} else if (IS_GEN(dev_priv, 10) || IS_GEN9_BC(dev_priv)) {
|
|
max_dc = 2;
|
|
mask = 0;
|
|
} else if (IS_GEN9_LP(dev_priv)) {
|
|
max_dc = 1;
|
|
mask = DC_STATE_EN_DC9;
|
|
} else {
|
|
max_dc = 0;
|
|
mask = 0;
|
|
}
|
|
|
|
if (!i915_modparams.disable_power_well)
|
|
max_dc = 0;
|
|
|
|
if (enable_dc >= 0 && enable_dc <= max_dc) {
|
|
requested_dc = enable_dc;
|
|
} else if (enable_dc == -1) {
|
|
requested_dc = max_dc;
|
|
} else if (enable_dc > max_dc && enable_dc <= 2) {
|
|
DRM_DEBUG_KMS("Adjusting requested max DC state (%d->%d)\n",
|
|
enable_dc, max_dc);
|
|
requested_dc = max_dc;
|
|
} else {
|
|
DRM_ERROR("Unexpected value for enable_dc (%d)\n", enable_dc);
|
|
requested_dc = max_dc;
|
|
}
|
|
|
|
if (requested_dc > 1)
|
|
mask |= DC_STATE_EN_UPTO_DC6;
|
|
if (requested_dc > 0)
|
|
mask |= DC_STATE_EN_UPTO_DC5;
|
|
|
|
DRM_DEBUG_KMS("Allowed DC state mask %02x\n", mask);
|
|
|
|
return mask;
|
|
}
|
|
|
|
static int
|
|
__set_power_wells(struct i915_power_domains *power_domains,
|
|
const struct i915_power_well_desc *power_well_descs,
|
|
int power_well_count)
|
|
{
|
|
u64 power_well_ids = 0;
|
|
int i;
|
|
|
|
power_domains->power_well_count = power_well_count;
|
|
power_domains->power_wells =
|
|
kcalloc(power_well_count,
|
|
sizeof(*power_domains->power_wells),
|
|
GFP_KERNEL);
|
|
if (!power_domains->power_wells)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < power_well_count; i++) {
|
|
enum i915_power_well_id id = power_well_descs[i].id;
|
|
|
|
power_domains->power_wells[i].desc = &power_well_descs[i];
|
|
|
|
if (id == DISP_PW_ID_NONE)
|
|
continue;
|
|
|
|
WARN_ON(id >= sizeof(power_well_ids) * 8);
|
|
WARN_ON(power_well_ids & BIT_ULL(id));
|
|
power_well_ids |= BIT_ULL(id);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define set_power_wells(power_domains, __power_well_descs) \
|
|
__set_power_wells(power_domains, __power_well_descs, \
|
|
ARRAY_SIZE(__power_well_descs))
|
|
|
|
/**
|
|
* intel_power_domains_init - initializes the power domain structures
|
|
* @dev_priv: i915 device instance
|
|
*
|
|
* Initializes the power domain structures for @dev_priv depending upon the
|
|
* supported platform.
|
|
*/
|
|
int intel_power_domains_init(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
int err;
|
|
|
|
i915_modparams.disable_power_well =
|
|
sanitize_disable_power_well_option(dev_priv,
|
|
i915_modparams.disable_power_well);
|
|
dev_priv->csr.allowed_dc_mask =
|
|
get_allowed_dc_mask(dev_priv, i915_modparams.enable_dc);
|
|
|
|
BUILD_BUG_ON(POWER_DOMAIN_NUM > 64);
|
|
|
|
mutex_init(&power_domains->lock);
|
|
|
|
INIT_DELAYED_WORK(&power_domains->async_put_work,
|
|
intel_display_power_put_async_work);
|
|
|
|
/*
|
|
* The enabling order will be from lower to higher indexed wells,
|
|
* the disabling order is reversed.
|
|
*/
|
|
if (IS_GEN(dev_priv, 11)) {
|
|
err = set_power_wells(power_domains, icl_power_wells);
|
|
} else if (IS_CANNONLAKE(dev_priv)) {
|
|
err = set_power_wells(power_domains, cnl_power_wells);
|
|
|
|
/*
|
|
* DDI and Aux IO are getting enabled for all ports
|
|
* regardless the presence or use. So, in order to avoid
|
|
* timeouts, lets remove them from the list
|
|
* for the SKUs without port F.
|
|
*/
|
|
if (!IS_CNL_WITH_PORT_F(dev_priv))
|
|
power_domains->power_well_count -= 2;
|
|
} else if (IS_GEMINILAKE(dev_priv)) {
|
|
err = set_power_wells(power_domains, glk_power_wells);
|
|
} else if (IS_BROXTON(dev_priv)) {
|
|
err = set_power_wells(power_domains, bxt_power_wells);
|
|
} else if (IS_GEN9_BC(dev_priv)) {
|
|
err = set_power_wells(power_domains, skl_power_wells);
|
|
} else if (IS_CHERRYVIEW(dev_priv)) {
|
|
err = set_power_wells(power_domains, chv_power_wells);
|
|
} else if (IS_BROADWELL(dev_priv)) {
|
|
err = set_power_wells(power_domains, bdw_power_wells);
|
|
} else if (IS_HASWELL(dev_priv)) {
|
|
err = set_power_wells(power_domains, hsw_power_wells);
|
|
} else if (IS_VALLEYVIEW(dev_priv)) {
|
|
err = set_power_wells(power_domains, vlv_power_wells);
|
|
} else if (IS_I830(dev_priv)) {
|
|
err = set_power_wells(power_domains, i830_power_wells);
|
|
} else {
|
|
err = set_power_wells(power_domains, i9xx_always_on_power_well);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* intel_power_domains_cleanup - clean up power domains resources
|
|
* @dev_priv: i915 device instance
|
|
*
|
|
* Release any resources acquired by intel_power_domains_init()
|
|
*/
|
|
void intel_power_domains_cleanup(struct drm_i915_private *dev_priv)
|
|
{
|
|
kfree(dev_priv->power_domains.power_wells);
|
|
}
|
|
|
|
static void intel_power_domains_sync_hw(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
struct i915_power_well *power_well;
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
for_each_power_well(dev_priv, power_well) {
|
|
power_well->desc->ops->sync_hw(dev_priv, power_well);
|
|
power_well->hw_enabled =
|
|
power_well->desc->ops->is_enabled(dev_priv, power_well);
|
|
}
|
|
mutex_unlock(&power_domains->lock);
|
|
}
|
|
|
|
static inline
|
|
bool intel_dbuf_slice_set(struct drm_i915_private *dev_priv,
|
|
i915_reg_t reg, bool enable)
|
|
{
|
|
u32 val, status;
|
|
|
|
val = I915_READ(reg);
|
|
val = enable ? (val | DBUF_POWER_REQUEST) : (val & ~DBUF_POWER_REQUEST);
|
|
I915_WRITE(reg, val);
|
|
POSTING_READ(reg);
|
|
udelay(10);
|
|
|
|
status = I915_READ(reg) & DBUF_POWER_STATE;
|
|
if ((enable && !status) || (!enable && status)) {
|
|
DRM_ERROR("DBus power %s timeout!\n",
|
|
enable ? "enable" : "disable");
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static void gen9_dbuf_enable(struct drm_i915_private *dev_priv)
|
|
{
|
|
intel_dbuf_slice_set(dev_priv, DBUF_CTL, true);
|
|
}
|
|
|
|
static void gen9_dbuf_disable(struct drm_i915_private *dev_priv)
|
|
{
|
|
intel_dbuf_slice_set(dev_priv, DBUF_CTL, false);
|
|
}
|
|
|
|
static u8 intel_dbuf_max_slices(struct drm_i915_private *dev_priv)
|
|
{
|
|
if (INTEL_GEN(dev_priv) < 11)
|
|
return 1;
|
|
return 2;
|
|
}
|
|
|
|
void icl_dbuf_slices_update(struct drm_i915_private *dev_priv,
|
|
u8 req_slices)
|
|
{
|
|
const u8 hw_enabled_slices = dev_priv->wm.skl_hw.ddb.enabled_slices;
|
|
bool ret;
|
|
|
|
if (req_slices > intel_dbuf_max_slices(dev_priv)) {
|
|
DRM_ERROR("Invalid number of dbuf slices requested\n");
|
|
return;
|
|
}
|
|
|
|
if (req_slices == hw_enabled_slices || req_slices == 0)
|
|
return;
|
|
|
|
if (req_slices > hw_enabled_slices)
|
|
ret = intel_dbuf_slice_set(dev_priv, DBUF_CTL_S2, true);
|
|
else
|
|
ret = intel_dbuf_slice_set(dev_priv, DBUF_CTL_S2, false);
|
|
|
|
if (ret)
|
|
dev_priv->wm.skl_hw.ddb.enabled_slices = req_slices;
|
|
}
|
|
|
|
static void icl_dbuf_enable(struct drm_i915_private *dev_priv)
|
|
{
|
|
I915_WRITE(DBUF_CTL_S1, I915_READ(DBUF_CTL_S1) | DBUF_POWER_REQUEST);
|
|
I915_WRITE(DBUF_CTL_S2, I915_READ(DBUF_CTL_S2) | DBUF_POWER_REQUEST);
|
|
POSTING_READ(DBUF_CTL_S2);
|
|
|
|
udelay(10);
|
|
|
|
if (!(I915_READ(DBUF_CTL_S1) & DBUF_POWER_STATE) ||
|
|
!(I915_READ(DBUF_CTL_S2) & DBUF_POWER_STATE))
|
|
DRM_ERROR("DBuf power enable timeout\n");
|
|
else
|
|
/*
|
|
* FIXME: for now pretend that we only have 1 slice, see
|
|
* intel_enabled_dbuf_slices_num().
|
|
*/
|
|
dev_priv->wm.skl_hw.ddb.enabled_slices = 1;
|
|
}
|
|
|
|
static void icl_dbuf_disable(struct drm_i915_private *dev_priv)
|
|
{
|
|
I915_WRITE(DBUF_CTL_S1, I915_READ(DBUF_CTL_S1) & ~DBUF_POWER_REQUEST);
|
|
I915_WRITE(DBUF_CTL_S2, I915_READ(DBUF_CTL_S2) & ~DBUF_POWER_REQUEST);
|
|
POSTING_READ(DBUF_CTL_S2);
|
|
|
|
udelay(10);
|
|
|
|
if ((I915_READ(DBUF_CTL_S1) & DBUF_POWER_STATE) ||
|
|
(I915_READ(DBUF_CTL_S2) & DBUF_POWER_STATE))
|
|
DRM_ERROR("DBuf power disable timeout!\n");
|
|
else
|
|
/*
|
|
* FIXME: for now pretend that the first slice is always
|
|
* enabled, see intel_enabled_dbuf_slices_num().
|
|
*/
|
|
dev_priv->wm.skl_hw.ddb.enabled_slices = 1;
|
|
}
|
|
|
|
static void icl_mbus_init(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 val;
|
|
|
|
val = MBUS_ABOX_BT_CREDIT_POOL1(16) |
|
|
MBUS_ABOX_BT_CREDIT_POOL2(16) |
|
|
MBUS_ABOX_B_CREDIT(1) |
|
|
MBUS_ABOX_BW_CREDIT(1);
|
|
|
|
I915_WRITE(MBUS_ABOX_CTL, val);
|
|
}
|
|
|
|
static void hsw_assert_cdclk(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 val = I915_READ(LCPLL_CTL);
|
|
|
|
/*
|
|
* The LCPLL register should be turned on by the BIOS. For now
|
|
* let's just check its state and print errors in case
|
|
* something is wrong. Don't even try to turn it on.
|
|
*/
|
|
|
|
if (val & LCPLL_CD_SOURCE_FCLK)
|
|
DRM_ERROR("CDCLK source is not LCPLL\n");
|
|
|
|
if (val & LCPLL_PLL_DISABLE)
|
|
DRM_ERROR("LCPLL is disabled\n");
|
|
}
|
|
|
|
static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct drm_device *dev = &dev_priv->drm;
|
|
struct intel_crtc *crtc;
|
|
|
|
for_each_intel_crtc(dev, crtc)
|
|
I915_STATE_WARN(crtc->active, "CRTC for pipe %c enabled\n",
|
|
pipe_name(crtc->pipe));
|
|
|
|
I915_STATE_WARN(I915_READ(HSW_PWR_WELL_CTL2),
|
|
"Display power well on\n");
|
|
I915_STATE_WARN(I915_READ(SPLL_CTL) & SPLL_PLL_ENABLE,
|
|
"SPLL enabled\n");
|
|
I915_STATE_WARN(I915_READ(WRPLL_CTL(0)) & WRPLL_PLL_ENABLE,
|
|
"WRPLL1 enabled\n");
|
|
I915_STATE_WARN(I915_READ(WRPLL_CTL(1)) & WRPLL_PLL_ENABLE,
|
|
"WRPLL2 enabled\n");
|
|
I915_STATE_WARN(I915_READ(PP_STATUS(0)) & PP_ON,
|
|
"Panel power on\n");
|
|
I915_STATE_WARN(I915_READ(BLC_PWM_CPU_CTL2) & BLM_PWM_ENABLE,
|
|
"CPU PWM1 enabled\n");
|
|
if (IS_HASWELL(dev_priv))
|
|
I915_STATE_WARN(I915_READ(HSW_BLC_PWM2_CTL) & BLM_PWM_ENABLE,
|
|
"CPU PWM2 enabled\n");
|
|
I915_STATE_WARN(I915_READ(BLC_PWM_PCH_CTL1) & BLM_PCH_PWM_ENABLE,
|
|
"PCH PWM1 enabled\n");
|
|
I915_STATE_WARN(I915_READ(UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
|
|
"Utility pin enabled\n");
|
|
I915_STATE_WARN(I915_READ(PCH_GTC_CTL) & PCH_GTC_ENABLE,
|
|
"PCH GTC enabled\n");
|
|
|
|
/*
|
|
* In theory we can still leave IRQs enabled, as long as only the HPD
|
|
* interrupts remain enabled. We used to check for that, but since it's
|
|
* gen-specific and since we only disable LCPLL after we fully disable
|
|
* the interrupts, the check below should be enough.
|
|
*/
|
|
I915_STATE_WARN(intel_irqs_enabled(dev_priv), "IRQs enabled\n");
|
|
}
|
|
|
|
static u32 hsw_read_dcomp(struct drm_i915_private *dev_priv)
|
|
{
|
|
if (IS_HASWELL(dev_priv))
|
|
return I915_READ(D_COMP_HSW);
|
|
else
|
|
return I915_READ(D_COMP_BDW);
|
|
}
|
|
|
|
static void hsw_write_dcomp(struct drm_i915_private *dev_priv, u32 val)
|
|
{
|
|
if (IS_HASWELL(dev_priv)) {
|
|
if (sandybridge_pcode_write(dev_priv,
|
|
GEN6_PCODE_WRITE_D_COMP, val))
|
|
DRM_DEBUG_KMS("Failed to write to D_COMP\n");
|
|
} else {
|
|
I915_WRITE(D_COMP_BDW, val);
|
|
POSTING_READ(D_COMP_BDW);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This function implements pieces of two sequences from BSpec:
|
|
* - Sequence for display software to disable LCPLL
|
|
* - Sequence for display software to allow package C8+
|
|
* The steps implemented here are just the steps that actually touch the LCPLL
|
|
* register. Callers should take care of disabling all the display engine
|
|
* functions, doing the mode unset, fixing interrupts, etc.
|
|
*/
|
|
static void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
|
|
bool switch_to_fclk, bool allow_power_down)
|
|
{
|
|
u32 val;
|
|
|
|
assert_can_disable_lcpll(dev_priv);
|
|
|
|
val = I915_READ(LCPLL_CTL);
|
|
|
|
if (switch_to_fclk) {
|
|
val |= LCPLL_CD_SOURCE_FCLK;
|
|
I915_WRITE(LCPLL_CTL, val);
|
|
|
|
if (wait_for_us(I915_READ(LCPLL_CTL) &
|
|
LCPLL_CD_SOURCE_FCLK_DONE, 1))
|
|
DRM_ERROR("Switching to FCLK failed\n");
|
|
|
|
val = I915_READ(LCPLL_CTL);
|
|
}
|
|
|
|
val |= LCPLL_PLL_DISABLE;
|
|
I915_WRITE(LCPLL_CTL, val);
|
|
POSTING_READ(LCPLL_CTL);
|
|
|
|
if (intel_wait_for_register(&dev_priv->uncore, LCPLL_CTL,
|
|
LCPLL_PLL_LOCK, 0, 1))
|
|
DRM_ERROR("LCPLL still locked\n");
|
|
|
|
val = hsw_read_dcomp(dev_priv);
|
|
val |= D_COMP_COMP_DISABLE;
|
|
hsw_write_dcomp(dev_priv, val);
|
|
ndelay(100);
|
|
|
|
if (wait_for((hsw_read_dcomp(dev_priv) &
|
|
D_COMP_RCOMP_IN_PROGRESS) == 0, 1))
|
|
DRM_ERROR("D_COMP RCOMP still in progress\n");
|
|
|
|
if (allow_power_down) {
|
|
val = I915_READ(LCPLL_CTL);
|
|
val |= LCPLL_POWER_DOWN_ALLOW;
|
|
I915_WRITE(LCPLL_CTL, val);
|
|
POSTING_READ(LCPLL_CTL);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Fully restores LCPLL, disallowing power down and switching back to LCPLL
|
|
* source.
|
|
*/
|
|
static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 val;
|
|
|
|
val = I915_READ(LCPLL_CTL);
|
|
|
|
if ((val & (LCPLL_PLL_LOCK | LCPLL_PLL_DISABLE | LCPLL_CD_SOURCE_FCLK |
|
|
LCPLL_POWER_DOWN_ALLOW)) == LCPLL_PLL_LOCK)
|
|
return;
|
|
|
|
/*
|
|
* Make sure we're not on PC8 state before disabling PC8, otherwise
|
|
* we'll hang the machine. To prevent PC8 state, just enable force_wake.
|
|
*/
|
|
intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL);
|
|
|
|
if (val & LCPLL_POWER_DOWN_ALLOW) {
|
|
val &= ~LCPLL_POWER_DOWN_ALLOW;
|
|
I915_WRITE(LCPLL_CTL, val);
|
|
POSTING_READ(LCPLL_CTL);
|
|
}
|
|
|
|
val = hsw_read_dcomp(dev_priv);
|
|
val |= D_COMP_COMP_FORCE;
|
|
val &= ~D_COMP_COMP_DISABLE;
|
|
hsw_write_dcomp(dev_priv, val);
|
|
|
|
val = I915_READ(LCPLL_CTL);
|
|
val &= ~LCPLL_PLL_DISABLE;
|
|
I915_WRITE(LCPLL_CTL, val);
|
|
|
|
if (intel_wait_for_register(&dev_priv->uncore, LCPLL_CTL,
|
|
LCPLL_PLL_LOCK, LCPLL_PLL_LOCK, 5))
|
|
DRM_ERROR("LCPLL not locked yet\n");
|
|
|
|
if (val & LCPLL_CD_SOURCE_FCLK) {
|
|
val = I915_READ(LCPLL_CTL);
|
|
val &= ~LCPLL_CD_SOURCE_FCLK;
|
|
I915_WRITE(LCPLL_CTL, val);
|
|
|
|
if (wait_for_us((I915_READ(LCPLL_CTL) &
|
|
LCPLL_CD_SOURCE_FCLK_DONE) == 0, 1))
|
|
DRM_ERROR("Switching back to LCPLL failed\n");
|
|
}
|
|
|
|
intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
|
|
|
|
intel_update_cdclk(dev_priv);
|
|
intel_dump_cdclk_state(&dev_priv->cdclk.hw, "Current CDCLK");
|
|
}
|
|
|
|
/*
|
|
* Package states C8 and deeper are really deep PC states that can only be
|
|
* reached when all the devices on the system allow it, so even if the graphics
|
|
* device allows PC8+, it doesn't mean the system will actually get to these
|
|
* states. Our driver only allows PC8+ when going into runtime PM.
|
|
*
|
|
* The requirements for PC8+ are that all the outputs are disabled, the power
|
|
* well is disabled and most interrupts are disabled, and these are also
|
|
* requirements for runtime PM. When these conditions are met, we manually do
|
|
* the other conditions: disable the interrupts, clocks and switch LCPLL refclk
|
|
* to Fclk. If we're in PC8+ and we get an non-hotplug interrupt, we can hard
|
|
* hang the machine.
|
|
*
|
|
* When we really reach PC8 or deeper states (not just when we allow it) we lose
|
|
* the state of some registers, so when we come back from PC8+ we need to
|
|
* restore this state. We don't get into PC8+ if we're not in RC6, so we don't
|
|
* need to take care of the registers kept by RC6. Notice that this happens even
|
|
* if we don't put the device in PCI D3 state (which is what currently happens
|
|
* because of the runtime PM support).
|
|
*
|
|
* For more, read "Display Sequences for Package C8" on the hardware
|
|
* documentation.
|
|
*/
|
|
void hsw_enable_pc8(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 val;
|
|
|
|
DRM_DEBUG_KMS("Enabling package C8+\n");
|
|
|
|
if (HAS_PCH_LPT_LP(dev_priv)) {
|
|
val = I915_READ(SOUTH_DSPCLK_GATE_D);
|
|
val &= ~PCH_LP_PARTITION_LEVEL_DISABLE;
|
|
I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
|
|
}
|
|
|
|
lpt_disable_clkout_dp(dev_priv);
|
|
hsw_disable_lcpll(dev_priv, true, true);
|
|
}
|
|
|
|
void hsw_disable_pc8(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 val;
|
|
|
|
DRM_DEBUG_KMS("Disabling package C8+\n");
|
|
|
|
hsw_restore_lcpll(dev_priv);
|
|
intel_init_pch_refclk(dev_priv);
|
|
|
|
if (HAS_PCH_LPT_LP(dev_priv)) {
|
|
val = I915_READ(SOUTH_DSPCLK_GATE_D);
|
|
val |= PCH_LP_PARTITION_LEVEL_DISABLE;
|
|
I915_WRITE(SOUTH_DSPCLK_GATE_D, val);
|
|
}
|
|
}
|
|
|
|
static void intel_pch_reset_handshake(struct drm_i915_private *dev_priv,
|
|
bool enable)
|
|
{
|
|
i915_reg_t reg;
|
|
u32 reset_bits, val;
|
|
|
|
if (IS_IVYBRIDGE(dev_priv)) {
|
|
reg = GEN7_MSG_CTL;
|
|
reset_bits = WAIT_FOR_PCH_FLR_ACK | WAIT_FOR_PCH_RESET_ACK;
|
|
} else {
|
|
reg = HSW_NDE_RSTWRN_OPT;
|
|
reset_bits = RESET_PCH_HANDSHAKE_ENABLE;
|
|
}
|
|
|
|
val = I915_READ(reg);
|
|
|
|
if (enable)
|
|
val |= reset_bits;
|
|
else
|
|
val &= ~reset_bits;
|
|
|
|
I915_WRITE(reg, val);
|
|
}
|
|
|
|
static void skl_display_core_init(struct drm_i915_private *dev_priv,
|
|
bool resume)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
struct i915_power_well *well;
|
|
|
|
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
|
|
|
|
/* enable PCH reset handshake */
|
|
intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv));
|
|
|
|
/* enable PG1 and Misc I/O */
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
|
|
intel_power_well_enable(dev_priv, well);
|
|
|
|
well = lookup_power_well(dev_priv, SKL_DISP_PW_MISC_IO);
|
|
intel_power_well_enable(dev_priv, well);
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
intel_cdclk_init(dev_priv);
|
|
|
|
gen9_dbuf_enable(dev_priv);
|
|
|
|
if (resume && dev_priv->csr.dmc_payload)
|
|
intel_csr_load_program(dev_priv);
|
|
}
|
|
|
|
static void skl_display_core_uninit(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
struct i915_power_well *well;
|
|
|
|
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
|
|
|
|
gen9_dbuf_disable(dev_priv);
|
|
|
|
intel_cdclk_uninit(dev_priv);
|
|
|
|
/* The spec doesn't call for removing the reset handshake flag */
|
|
/* disable PG1 and Misc I/O */
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
/*
|
|
* BSpec says to keep the MISC IO power well enabled here, only
|
|
* remove our request for power well 1.
|
|
* Note that even though the driver's request is removed power well 1
|
|
* may stay enabled after this due to DMC's own request on it.
|
|
*/
|
|
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
|
|
intel_power_well_disable(dev_priv, well);
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
usleep_range(10, 30); /* 10 us delay per Bspec */
|
|
}
|
|
|
|
void bxt_display_core_init(struct drm_i915_private *dev_priv,
|
|
bool resume)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
struct i915_power_well *well;
|
|
|
|
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
|
|
|
|
/*
|
|
* NDE_RSTWRN_OPT RST PCH Handshake En must always be 0b on BXT
|
|
* or else the reset will hang because there is no PCH to respond.
|
|
* Move the handshake programming to initialization sequence.
|
|
* Previously was left up to BIOS.
|
|
*/
|
|
intel_pch_reset_handshake(dev_priv, false);
|
|
|
|
/* Enable PG1 */
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
|
|
intel_power_well_enable(dev_priv, well);
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
intel_cdclk_init(dev_priv);
|
|
|
|
gen9_dbuf_enable(dev_priv);
|
|
|
|
if (resume && dev_priv->csr.dmc_payload)
|
|
intel_csr_load_program(dev_priv);
|
|
}
|
|
|
|
void bxt_display_core_uninit(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
struct i915_power_well *well;
|
|
|
|
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
|
|
|
|
gen9_dbuf_disable(dev_priv);
|
|
|
|
intel_cdclk_uninit(dev_priv);
|
|
|
|
/* The spec doesn't call for removing the reset handshake flag */
|
|
|
|
/*
|
|
* Disable PW1 (PG1).
|
|
* Note that even though the driver's request is removed power well 1
|
|
* may stay enabled after this due to DMC's own request on it.
|
|
*/
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
|
|
intel_power_well_disable(dev_priv, well);
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
usleep_range(10, 30); /* 10 us delay per Bspec */
|
|
}
|
|
|
|
static void cnl_display_core_init(struct drm_i915_private *dev_priv, bool resume)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
struct i915_power_well *well;
|
|
|
|
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
|
|
|
|
/* 1. Enable PCH Reset Handshake */
|
|
intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv));
|
|
|
|
/* 2-3. */
|
|
intel_combo_phy_init(dev_priv);
|
|
|
|
/*
|
|
* 4. Enable Power Well 1 (PG1).
|
|
* The AUX IO power wells will be enabled on demand.
|
|
*/
|
|
mutex_lock(&power_domains->lock);
|
|
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
|
|
intel_power_well_enable(dev_priv, well);
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
/* 5. Enable CD clock */
|
|
intel_cdclk_init(dev_priv);
|
|
|
|
/* 6. Enable DBUF */
|
|
gen9_dbuf_enable(dev_priv);
|
|
|
|
if (resume && dev_priv->csr.dmc_payload)
|
|
intel_csr_load_program(dev_priv);
|
|
}
|
|
|
|
static void cnl_display_core_uninit(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
struct i915_power_well *well;
|
|
|
|
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
|
|
|
|
/* 1. Disable all display engine functions -> aready done */
|
|
|
|
/* 2. Disable DBUF */
|
|
gen9_dbuf_disable(dev_priv);
|
|
|
|
/* 3. Disable CD clock */
|
|
intel_cdclk_uninit(dev_priv);
|
|
|
|
/*
|
|
* 4. Disable Power Well 1 (PG1).
|
|
* The AUX IO power wells are toggled on demand, so they are already
|
|
* disabled at this point.
|
|
*/
|
|
mutex_lock(&power_domains->lock);
|
|
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
|
|
intel_power_well_disable(dev_priv, well);
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
usleep_range(10, 30); /* 10 us delay per Bspec */
|
|
|
|
/* 5. */
|
|
intel_combo_phy_uninit(dev_priv);
|
|
}
|
|
|
|
void icl_display_core_init(struct drm_i915_private *dev_priv,
|
|
bool resume)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
struct i915_power_well *well;
|
|
|
|
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
|
|
|
|
/* 1. Enable PCH reset handshake. */
|
|
intel_pch_reset_handshake(dev_priv, !HAS_PCH_NOP(dev_priv));
|
|
|
|
/* 2. Initialize all combo phys */
|
|
intel_combo_phy_init(dev_priv);
|
|
|
|
/*
|
|
* 3. Enable Power Well 1 (PG1).
|
|
* The AUX IO power wells will be enabled on demand.
|
|
*/
|
|
mutex_lock(&power_domains->lock);
|
|
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
|
|
intel_power_well_enable(dev_priv, well);
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
/* 4. Enable CDCLK. */
|
|
intel_cdclk_init(dev_priv);
|
|
|
|
/* 5. Enable DBUF. */
|
|
icl_dbuf_enable(dev_priv);
|
|
|
|
/* 6. Setup MBUS. */
|
|
icl_mbus_init(dev_priv);
|
|
|
|
if (resume && dev_priv->csr.dmc_payload)
|
|
intel_csr_load_program(dev_priv);
|
|
}
|
|
|
|
void icl_display_core_uninit(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_domains *power_domains = &dev_priv->power_domains;
|
|
struct i915_power_well *well;
|
|
|
|
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
|
|
|
|
/* 1. Disable all display engine functions -> aready done */
|
|
|
|
/* 2. Disable DBUF */
|
|
icl_dbuf_disable(dev_priv);
|
|
|
|
/* 3. Disable CD clock */
|
|
intel_cdclk_uninit(dev_priv);
|
|
|
|
/*
|
|
* 4. Disable Power Well 1 (PG1).
|
|
* The AUX IO power wells are toggled on demand, so they are already
|
|
* disabled at this point.
|
|
*/
|
|
mutex_lock(&power_domains->lock);
|
|
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
|
|
intel_power_well_disable(dev_priv, well);
|
|
mutex_unlock(&power_domains->lock);
|
|
|
|
/* 5. */
|
|
intel_combo_phy_uninit(dev_priv);
|
|
}
|
|
|
|
static void chv_phy_control_init(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_well *cmn_bc =
|
|
lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
|
|
struct i915_power_well *cmn_d =
|
|
lookup_power_well(dev_priv, CHV_DISP_PW_DPIO_CMN_D);
|
|
|
|
/*
|
|
* DISPLAY_PHY_CONTROL can get corrupted if read. As a
|
|
* workaround never ever read DISPLAY_PHY_CONTROL, and
|
|
* instead maintain a shadow copy ourselves. Use the actual
|
|
* power well state and lane status to reconstruct the
|
|
* expected initial value.
|
|
*/
|
|
dev_priv->chv_phy_control =
|
|
PHY_LDO_SEQ_DELAY(PHY_LDO_DELAY_600NS, DPIO_PHY0) |
|
|
PHY_LDO_SEQ_DELAY(PHY_LDO_DELAY_600NS, DPIO_PHY1) |
|
|
PHY_CH_POWER_MODE(PHY_CH_DEEP_PSR, DPIO_PHY0, DPIO_CH0) |
|
|
PHY_CH_POWER_MODE(PHY_CH_DEEP_PSR, DPIO_PHY0, DPIO_CH1) |
|
|
PHY_CH_POWER_MODE(PHY_CH_DEEP_PSR, DPIO_PHY1, DPIO_CH0);
|
|
|
|
/*
|
|
* If all lanes are disabled we leave the override disabled
|
|
* with all power down bits cleared to match the state we
|
|
* would use after disabling the port. Otherwise enable the
|
|
* override and set the lane powerdown bits accding to the
|
|
* current lane status.
|
|
*/
|
|
if (cmn_bc->desc->ops->is_enabled(dev_priv, cmn_bc)) {
|
|
u32 status = I915_READ(DPLL(PIPE_A));
|
|
unsigned int mask;
|
|
|
|
mask = status & DPLL_PORTB_READY_MASK;
|
|
if (mask == 0xf)
|
|
mask = 0x0;
|
|
else
|
|
dev_priv->chv_phy_control |=
|
|
PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH0);
|
|
|
|
dev_priv->chv_phy_control |=
|
|
PHY_CH_POWER_DOWN_OVRD(mask, DPIO_PHY0, DPIO_CH0);
|
|
|
|
mask = (status & DPLL_PORTC_READY_MASK) >> 4;
|
|
if (mask == 0xf)
|
|
mask = 0x0;
|
|
else
|
|
dev_priv->chv_phy_control |=
|
|
PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY0, DPIO_CH1);
|
|
|
|
dev_priv->chv_phy_control |=
|
|
PHY_CH_POWER_DOWN_OVRD(mask, DPIO_PHY0, DPIO_CH1);
|
|
|
|
dev_priv->chv_phy_control |= PHY_COM_LANE_RESET_DEASSERT(DPIO_PHY0);
|
|
|
|
dev_priv->chv_phy_assert[DPIO_PHY0] = false;
|
|
} else {
|
|
dev_priv->chv_phy_assert[DPIO_PHY0] = true;
|
|
}
|
|
|
|
if (cmn_d->desc->ops->is_enabled(dev_priv, cmn_d)) {
|
|
u32 status = I915_READ(DPIO_PHY_STATUS);
|
|
unsigned int mask;
|
|
|
|
mask = status & DPLL_PORTD_READY_MASK;
|
|
|
|
if (mask == 0xf)
|
|
mask = 0x0;
|
|
else
|
|
dev_priv->chv_phy_control |=
|
|
PHY_CH_POWER_DOWN_OVRD_EN(DPIO_PHY1, DPIO_CH0);
|
|
|
|
dev_priv->chv_phy_control |=
|
|
PHY_CH_POWER_DOWN_OVRD(mask, DPIO_PHY1, DPIO_CH0);
|
|
|
|
dev_priv->chv_phy_control |= PHY_COM_LANE_RESET_DEASSERT(DPIO_PHY1);
|
|
|
|
dev_priv->chv_phy_assert[DPIO_PHY1] = false;
|
|
} else {
|
|
dev_priv->chv_phy_assert[DPIO_PHY1] = true;
|
|
}
|
|
|
|
I915_WRITE(DISPLAY_PHY_CONTROL, dev_priv->chv_phy_control);
|
|
|
|
DRM_DEBUG_KMS("Initial PHY_CONTROL=0x%08x\n",
|
|
dev_priv->chv_phy_control);
|
|
}
|
|
|
|
static void vlv_cmnlane_wa(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct i915_power_well *cmn =
|
|
lookup_power_well(dev_priv, VLV_DISP_PW_DPIO_CMN_BC);
|
|
struct i915_power_well *disp2d =
|
|
lookup_power_well(dev_priv, VLV_DISP_PW_DISP2D);
|
|
|
|
/* If the display might be already active skip this */
|
|
if (cmn->desc->ops->is_enabled(dev_priv, cmn) &&
|
|
disp2d->desc->ops->is_enabled(dev_priv, disp2d) &&
|
|
I915_READ(DPIO_CTL) & DPIO_CMNRST)
|
|
return;
|
|
|
|
DRM_DEBUG_KMS("toggling display PHY side reset\n");
|
|
|
|
/* cmnlane needs DPLL registers */
|
|
disp2d->desc->ops->enable(dev_priv, disp2d);
|
|
|
|
/*
|
|
* From VLV2A0_DP_eDP_HDMI_DPIO_driver_vbios_notes_11.docx:
|
|
* Need to assert and de-assert PHY SB reset by gating the
|
|
* common lane power, then un-gating it.
|
|
* Simply ungating isn't enough to reset the PHY enough to get
|
|
* ports and lanes running.
|
|
*/
|
|
cmn->desc->ops->disable(dev_priv, cmn);
|
|
}
|
|
|
|
static bool vlv_punit_is_power_gated(struct drm_i915_private *dev_priv, u32 reg0)
|
|
{
|
|
bool ret;
|
|
|
|
vlv_punit_get(dev_priv);
|
|
ret = (vlv_punit_read(dev_priv, reg0) & SSPM0_SSC_MASK) == SSPM0_SSC_PWR_GATE;
|
|
vlv_punit_put(dev_priv);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void assert_ved_power_gated(struct drm_i915_private *dev_priv)
|
|
{
|
|
WARN(!vlv_punit_is_power_gated(dev_priv, PUNIT_REG_VEDSSPM0),
|
|
"VED not power gated\n");
|
|
}
|
|
|
|
static void assert_isp_power_gated(struct drm_i915_private *dev_priv)
|
|
{
|
|
static const struct pci_device_id isp_ids[] = {
|
|
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0f38)},
|
|
{PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x22b8)},
|
|
{}
|
|
};
|
|
|
|
WARN(!pci_dev_present(isp_ids) &&
|
|
!vlv_punit_is_power_gated(dev_priv, PUNIT_REG_ISPSSPM0),
|
|
"ISP not power gated\n");
|
|
}
|
|
|
|
static void intel_power_domains_verify_state(struct drm_i915_private *dev_priv);
|
|
|
|
/**
|
|
* intel_power_domains_init_hw - initialize hardware power domain state
|
|
* @i915: i915 device instance
|
|
* @resume: Called from resume code paths or not
|
|
*
|
|
* This function initializes the hardware power domain state and enables all
|
|
* power wells belonging to the INIT power domain. Power wells in other
|
|
* domains (and not in the INIT domain) are referenced or disabled by
|
|
* intel_modeset_readout_hw_state(). After that the reference count of each
|
|
* power well must match its HW enabled state, see
|
|
* intel_power_domains_verify_state().
|
|
*
|
|
* It will return with power domains disabled (to be enabled later by
|
|
* intel_power_domains_enable()) and must be paired with
|
|
* intel_power_domains_fini_hw().
|
|
*/
|
|
void intel_power_domains_init_hw(struct drm_i915_private *i915, bool resume)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->power_domains;
|
|
|
|
power_domains->initializing = true;
|
|
|
|
if (INTEL_GEN(i915) >= 11) {
|
|
icl_display_core_init(i915, resume);
|
|
} else if (IS_CANNONLAKE(i915)) {
|
|
cnl_display_core_init(i915, resume);
|
|
} else if (IS_GEN9_BC(i915)) {
|
|
skl_display_core_init(i915, resume);
|
|
} else if (IS_GEN9_LP(i915)) {
|
|
bxt_display_core_init(i915, resume);
|
|
} else if (IS_CHERRYVIEW(i915)) {
|
|
mutex_lock(&power_domains->lock);
|
|
chv_phy_control_init(i915);
|
|
mutex_unlock(&power_domains->lock);
|
|
assert_isp_power_gated(i915);
|
|
} else if (IS_VALLEYVIEW(i915)) {
|
|
mutex_lock(&power_domains->lock);
|
|
vlv_cmnlane_wa(i915);
|
|
mutex_unlock(&power_domains->lock);
|
|
assert_ved_power_gated(i915);
|
|
assert_isp_power_gated(i915);
|
|
} else if (IS_BROADWELL(i915) || IS_HASWELL(i915)) {
|
|
hsw_assert_cdclk(i915);
|
|
intel_pch_reset_handshake(i915, !HAS_PCH_NOP(i915));
|
|
} else if (IS_IVYBRIDGE(i915)) {
|
|
intel_pch_reset_handshake(i915, !HAS_PCH_NOP(i915));
|
|
}
|
|
|
|
/*
|
|
* Keep all power wells enabled for any dependent HW access during
|
|
* initialization and to make sure we keep BIOS enabled display HW
|
|
* resources powered until display HW readout is complete. We drop
|
|
* this reference in intel_power_domains_enable().
|
|
*/
|
|
power_domains->wakeref =
|
|
intel_display_power_get(i915, POWER_DOMAIN_INIT);
|
|
|
|
/* Disable power support if the user asked so. */
|
|
if (!i915_modparams.disable_power_well)
|
|
intel_display_power_get(i915, POWER_DOMAIN_INIT);
|
|
intel_power_domains_sync_hw(i915);
|
|
|
|
power_domains->initializing = false;
|
|
}
|
|
|
|
/**
|
|
* intel_power_domains_fini_hw - deinitialize hw power domain state
|
|
* @i915: i915 device instance
|
|
*
|
|
* De-initializes the display power domain HW state. It also ensures that the
|
|
* device stays powered up so that the driver can be reloaded.
|
|
*
|
|
* It must be called with power domains already disabled (after a call to
|
|
* intel_power_domains_disable()) and must be paired with
|
|
* intel_power_domains_init_hw().
|
|
*/
|
|
void intel_power_domains_fini_hw(struct drm_i915_private *i915)
|
|
{
|
|
intel_wakeref_t wakeref __maybe_unused =
|
|
fetch_and_zero(&i915->power_domains.wakeref);
|
|
|
|
/* Remove the refcount we took to keep power well support disabled. */
|
|
if (!i915_modparams.disable_power_well)
|
|
intel_display_power_put_unchecked(i915, POWER_DOMAIN_INIT);
|
|
|
|
intel_display_power_flush_work_sync(i915);
|
|
|
|
intel_power_domains_verify_state(i915);
|
|
|
|
/* Keep the power well enabled, but cancel its rpm wakeref. */
|
|
intel_runtime_pm_put(i915, wakeref);
|
|
}
|
|
|
|
/**
|
|
* intel_power_domains_enable - enable toggling of display power wells
|
|
* @i915: i915 device instance
|
|
*
|
|
* Enable the ondemand enabling/disabling of the display power wells. Note that
|
|
* power wells not belonging to POWER_DOMAIN_INIT are allowed to be toggled
|
|
* only at specific points of the display modeset sequence, thus they are not
|
|
* affected by the intel_power_domains_enable()/disable() calls. The purpose
|
|
* of these function is to keep the rest of power wells enabled until the end
|
|
* of display HW readout (which will acquire the power references reflecting
|
|
* the current HW state).
|
|
*/
|
|
void intel_power_domains_enable(struct drm_i915_private *i915)
|
|
{
|
|
intel_wakeref_t wakeref __maybe_unused =
|
|
fetch_and_zero(&i915->power_domains.wakeref);
|
|
|
|
intel_display_power_put(i915, POWER_DOMAIN_INIT, wakeref);
|
|
intel_power_domains_verify_state(i915);
|
|
}
|
|
|
|
/**
|
|
* intel_power_domains_disable - disable toggling of display power wells
|
|
* @i915: i915 device instance
|
|
*
|
|
* Disable the ondemand enabling/disabling of the display power wells. See
|
|
* intel_power_domains_enable() for which power wells this call controls.
|
|
*/
|
|
void intel_power_domains_disable(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->power_domains;
|
|
|
|
WARN_ON(power_domains->wakeref);
|
|
power_domains->wakeref =
|
|
intel_display_power_get(i915, POWER_DOMAIN_INIT);
|
|
|
|
intel_power_domains_verify_state(i915);
|
|
}
|
|
|
|
/**
|
|
* intel_power_domains_suspend - suspend power domain state
|
|
* @i915: i915 device instance
|
|
* @suspend_mode: specifies the target suspend state (idle, mem, hibernation)
|
|
*
|
|
* This function prepares the hardware power domain state before entering
|
|
* system suspend.
|
|
*
|
|
* It must be called with power domains already disabled (after a call to
|
|
* intel_power_domains_disable()) and paired with intel_power_domains_resume().
|
|
*/
|
|
void intel_power_domains_suspend(struct drm_i915_private *i915,
|
|
enum i915_drm_suspend_mode suspend_mode)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->power_domains;
|
|
intel_wakeref_t wakeref __maybe_unused =
|
|
fetch_and_zero(&power_domains->wakeref);
|
|
|
|
intel_display_power_put(i915, POWER_DOMAIN_INIT, wakeref);
|
|
|
|
/*
|
|
* In case of suspend-to-idle (aka S0ix) on a DMC platform without DC9
|
|
* support don't manually deinit the power domains. This also means the
|
|
* CSR/DMC firmware will stay active, it will power down any HW
|
|
* resources as required and also enable deeper system power states
|
|
* that would be blocked if the firmware was inactive.
|
|
*/
|
|
if (!(i915->csr.allowed_dc_mask & DC_STATE_EN_DC9) &&
|
|
suspend_mode == I915_DRM_SUSPEND_IDLE &&
|
|
i915->csr.dmc_payload) {
|
|
intel_display_power_flush_work(i915);
|
|
intel_power_domains_verify_state(i915);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Even if power well support was disabled we still want to disable
|
|
* power wells if power domains must be deinitialized for suspend.
|
|
*/
|
|
if (!i915_modparams.disable_power_well)
|
|
intel_display_power_put_unchecked(i915, POWER_DOMAIN_INIT);
|
|
|
|
intel_display_power_flush_work(i915);
|
|
intel_power_domains_verify_state(i915);
|
|
|
|
if (INTEL_GEN(i915) >= 11)
|
|
icl_display_core_uninit(i915);
|
|
else if (IS_CANNONLAKE(i915))
|
|
cnl_display_core_uninit(i915);
|
|
else if (IS_GEN9_BC(i915))
|
|
skl_display_core_uninit(i915);
|
|
else if (IS_GEN9_LP(i915))
|
|
bxt_display_core_uninit(i915);
|
|
|
|
power_domains->display_core_suspended = true;
|
|
}
|
|
|
|
/**
|
|
* intel_power_domains_resume - resume power domain state
|
|
* @i915: i915 device instance
|
|
*
|
|
* This function resume the hardware power domain state during system resume.
|
|
*
|
|
* It will return with power domain support disabled (to be enabled later by
|
|
* intel_power_domains_enable()) and must be paired with
|
|
* intel_power_domains_suspend().
|
|
*/
|
|
void intel_power_domains_resume(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->power_domains;
|
|
|
|
if (power_domains->display_core_suspended) {
|
|
intel_power_domains_init_hw(i915, true);
|
|
power_domains->display_core_suspended = false;
|
|
} else {
|
|
WARN_ON(power_domains->wakeref);
|
|
power_domains->wakeref =
|
|
intel_display_power_get(i915, POWER_DOMAIN_INIT);
|
|
}
|
|
|
|
intel_power_domains_verify_state(i915);
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
|
|
|
|
static void intel_power_domains_dump_info(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->power_domains;
|
|
struct i915_power_well *power_well;
|
|
|
|
for_each_power_well(i915, power_well) {
|
|
enum intel_display_power_domain domain;
|
|
|
|
DRM_DEBUG_DRIVER("%-25s %d\n",
|
|
power_well->desc->name, power_well->count);
|
|
|
|
for_each_power_domain(domain, power_well->desc->domains)
|
|
DRM_DEBUG_DRIVER(" %-23s %d\n",
|
|
intel_display_power_domain_str(domain),
|
|
power_domains->domain_use_count[domain]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* intel_power_domains_verify_state - verify the HW/SW state for all power wells
|
|
* @i915: i915 device instance
|
|
*
|
|
* Verify if the reference count of each power well matches its HW enabled
|
|
* state and the total refcount of the domains it belongs to. This must be
|
|
* called after modeset HW state sanitization, which is responsible for
|
|
* acquiring reference counts for any power wells in use and disabling the
|
|
* ones left on by BIOS but not required by any active output.
|
|
*/
|
|
static void intel_power_domains_verify_state(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_power_domains *power_domains = &i915->power_domains;
|
|
struct i915_power_well *power_well;
|
|
bool dump_domain_info;
|
|
|
|
mutex_lock(&power_domains->lock);
|
|
|
|
verify_async_put_domains_state(power_domains);
|
|
|
|
dump_domain_info = false;
|
|
for_each_power_well(i915, power_well) {
|
|
enum intel_display_power_domain domain;
|
|
int domains_count;
|
|
bool enabled;
|
|
|
|
enabled = power_well->desc->ops->is_enabled(i915, power_well);
|
|
if ((power_well->count || power_well->desc->always_on) !=
|
|
enabled)
|
|
DRM_ERROR("power well %s state mismatch (refcount %d/enabled %d)",
|
|
power_well->desc->name,
|
|
power_well->count, enabled);
|
|
|
|
domains_count = 0;
|
|
for_each_power_domain(domain, power_well->desc->domains)
|
|
domains_count += power_domains->domain_use_count[domain];
|
|
|
|
if (power_well->count != domains_count) {
|
|
DRM_ERROR("power well %s refcount/domain refcount mismatch "
|
|
"(refcount %d/domains refcount %d)\n",
|
|
power_well->desc->name, power_well->count,
|
|
domains_count);
|
|
dump_domain_info = true;
|
|
}
|
|
}
|
|
|
|
if (dump_domain_info) {
|
|
static bool dumped;
|
|
|
|
if (!dumped) {
|
|
intel_power_domains_dump_info(i915);
|
|
dumped = true;
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&power_domains->lock);
|
|
}
|
|
|
|
#else
|
|
|
|
static void intel_power_domains_verify_state(struct drm_i915_private *i915)
|
|
{
|
|
}
|
|
|
|
#endif
|
|
|
|
static intel_wakeref_t __intel_runtime_pm_get(struct drm_i915_private *i915,
|
|
bool wakelock)
|
|
{
|
|
struct pci_dev *pdev = i915->drm.pdev;
|
|
struct device *kdev = &pdev->dev;
|
|
int ret;
|
|
|
|
ret = pm_runtime_get_sync(kdev);
|
|
WARN_ONCE(ret < 0, "pm_runtime_get_sync() failed: %d\n", ret);
|
|
|
|
intel_runtime_pm_acquire(i915, wakelock);
|
|
|
|
return track_intel_runtime_pm_wakeref(i915);
|
|
}
|
|
|
|
static intel_wakeref_t intel_runtime_pm_get_raw(struct drm_i915_private *i915)
|
|
{
|
|
return __intel_runtime_pm_get(i915, false);
|
|
}
|
|
|
|
/**
|
|
* intel_runtime_pm_get - grab a runtime pm reference
|
|
* @i915: i915 device instance
|
|
*
|
|
* This function grabs a device-level runtime pm reference (mostly used for GEM
|
|
* code to ensure the GTT or GT is on) and ensures that it is powered up.
|
|
*
|
|
* Any runtime pm reference obtained by this function must have a symmetric
|
|
* call to intel_runtime_pm_put() to release the reference again.
|
|
*
|
|
* Returns: the wakeref cookie to pass to intel_runtime_pm_put()
|
|
*/
|
|
intel_wakeref_t intel_runtime_pm_get(struct drm_i915_private *i915)
|
|
{
|
|
return __intel_runtime_pm_get(i915, true);
|
|
}
|
|
|
|
/**
|
|
* intel_runtime_pm_get_if_in_use - grab a runtime pm reference if device in use
|
|
* @i915: i915 device instance
|
|
*
|
|
* This function grabs a device-level runtime pm reference if the device is
|
|
* already in use and ensures that it is powered up. It is illegal to try
|
|
* and access the HW should intel_runtime_pm_get_if_in_use() report failure.
|
|
*
|
|
* Any runtime pm reference obtained by this function must have a symmetric
|
|
* call to intel_runtime_pm_put() to release the reference again.
|
|
*
|
|
* Returns: the wakeref cookie to pass to intel_runtime_pm_put(), evaluates
|
|
* as True if the wakeref was acquired, or False otherwise.
|
|
*/
|
|
intel_wakeref_t intel_runtime_pm_get_if_in_use(struct drm_i915_private *i915)
|
|
{
|
|
if (IS_ENABLED(CONFIG_PM)) {
|
|
struct pci_dev *pdev = i915->drm.pdev;
|
|
struct device *kdev = &pdev->dev;
|
|
|
|
/*
|
|
* In cases runtime PM is disabled by the RPM core and we get
|
|
* an -EINVAL return value we are not supposed to call this
|
|
* function, since the power state is undefined. This applies
|
|
* atm to the late/early system suspend/resume handlers.
|
|
*/
|
|
if (pm_runtime_get_if_in_use(kdev) <= 0)
|
|
return 0;
|
|
}
|
|
|
|
intel_runtime_pm_acquire(i915, true);
|
|
|
|
return track_intel_runtime_pm_wakeref(i915);
|
|
}
|
|
|
|
/**
|
|
* intel_runtime_pm_get_noresume - grab a runtime pm reference
|
|
* @i915: i915 device instance
|
|
*
|
|
* This function grabs a device-level runtime pm reference (mostly used for GEM
|
|
* code to ensure the GTT or GT is on).
|
|
*
|
|
* It will _not_ power up the device but instead only check that it's powered
|
|
* on. Therefore it is only valid to call this functions from contexts where
|
|
* the device is known to be powered up and where trying to power it up would
|
|
* result in hilarity and deadlocks. That pretty much means only the system
|
|
* suspend/resume code where this is used to grab runtime pm references for
|
|
* delayed setup down in work items.
|
|
*
|
|
* Any runtime pm reference obtained by this function must have a symmetric
|
|
* call to intel_runtime_pm_put() to release the reference again.
|
|
*
|
|
* Returns: the wakeref cookie to pass to intel_runtime_pm_put()
|
|
*/
|
|
intel_wakeref_t intel_runtime_pm_get_noresume(struct drm_i915_private *i915)
|
|
{
|
|
struct pci_dev *pdev = i915->drm.pdev;
|
|
struct device *kdev = &pdev->dev;
|
|
|
|
assert_rpm_wakelock_held(i915);
|
|
pm_runtime_get_noresume(kdev);
|
|
|
|
intel_runtime_pm_acquire(i915, true);
|
|
|
|
return track_intel_runtime_pm_wakeref(i915);
|
|
}
|
|
|
|
static void __intel_runtime_pm_put(struct drm_i915_private *i915,
|
|
intel_wakeref_t wref,
|
|
bool wakelock)
|
|
{
|
|
struct pci_dev *pdev = i915->drm.pdev;
|
|
struct device *kdev = &pdev->dev;
|
|
|
|
untrack_intel_runtime_pm_wakeref(i915, wref);
|
|
|
|
intel_runtime_pm_release(i915, wakelock);
|
|
|
|
pm_runtime_mark_last_busy(kdev);
|
|
pm_runtime_put_autosuspend(kdev);
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
|
|
static void
|
|
intel_runtime_pm_put_raw(struct drm_i915_private *i915, intel_wakeref_t wref)
|
|
{
|
|
__intel_runtime_pm_put(i915, wref, false);
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* intel_runtime_pm_put_unchecked - release an unchecked runtime pm reference
|
|
* @i915: i915 device instance
|
|
*
|
|
* This function drops the device-level runtime pm reference obtained by
|
|
* intel_runtime_pm_get() and might power down the corresponding
|
|
* hardware block right away if this is the last reference.
|
|
*
|
|
* This function exists only for historical reasons and should be avoided in
|
|
* new code, as the correctness of its use cannot be checked. Always use
|
|
* intel_runtime_pm_put() instead.
|
|
*/
|
|
void intel_runtime_pm_put_unchecked(struct drm_i915_private *i915)
|
|
{
|
|
__intel_runtime_pm_put(i915, -1, true);
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
|
|
/**
|
|
* intel_runtime_pm_put - release a runtime pm reference
|
|
* @i915: i915 device instance
|
|
* @wref: wakeref acquired for the reference that is being released
|
|
*
|
|
* This function drops the device-level runtime pm reference obtained by
|
|
* intel_runtime_pm_get() and might power down the corresponding
|
|
* hardware block right away if this is the last reference.
|
|
*/
|
|
void intel_runtime_pm_put(struct drm_i915_private *i915, intel_wakeref_t wref)
|
|
{
|
|
__intel_runtime_pm_put(i915, wref, true);
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* intel_runtime_pm_enable - enable runtime pm
|
|
* @i915: i915 device instance
|
|
*
|
|
* This function enables runtime pm at the end of the driver load sequence.
|
|
*
|
|
* Note that this function does currently not enable runtime pm for the
|
|
* subordinate display power domains. That is done by
|
|
* intel_power_domains_enable().
|
|
*/
|
|
void intel_runtime_pm_enable(struct drm_i915_private *i915)
|
|
{
|
|
struct pci_dev *pdev = i915->drm.pdev;
|
|
struct device *kdev = &pdev->dev;
|
|
|
|
/*
|
|
* Disable the system suspend direct complete optimization, which can
|
|
* leave the device suspended skipping the driver's suspend handlers
|
|
* if the device was already runtime suspended. This is needed due to
|
|
* the difference in our runtime and system suspend sequence and
|
|
* becaue the HDA driver may require us to enable the audio power
|
|
* domain during system suspend.
|
|
*/
|
|
dev_pm_set_driver_flags(kdev, DPM_FLAG_NEVER_SKIP);
|
|
|
|
pm_runtime_set_autosuspend_delay(kdev, 10000); /* 10s */
|
|
pm_runtime_mark_last_busy(kdev);
|
|
|
|
/*
|
|
* Take a permanent reference to disable the RPM functionality and drop
|
|
* it only when unloading the driver. Use the low level get/put helpers,
|
|
* so the driver's own RPM reference tracking asserts also work on
|
|
* platforms without RPM support.
|
|
*/
|
|
if (!HAS_RUNTIME_PM(i915)) {
|
|
int ret;
|
|
|
|
pm_runtime_dont_use_autosuspend(kdev);
|
|
ret = pm_runtime_get_sync(kdev);
|
|
WARN(ret < 0, "pm_runtime_get_sync() failed: %d\n", ret);
|
|
} else {
|
|
pm_runtime_use_autosuspend(kdev);
|
|
}
|
|
|
|
/*
|
|
* The core calls the driver load handler with an RPM reference held.
|
|
* We drop that here and will reacquire it during unloading in
|
|
* intel_power_domains_fini().
|
|
*/
|
|
pm_runtime_put_autosuspend(kdev);
|
|
}
|
|
|
|
void intel_runtime_pm_disable(struct drm_i915_private *i915)
|
|
{
|
|
struct pci_dev *pdev = i915->drm.pdev;
|
|
struct device *kdev = &pdev->dev;
|
|
|
|
/* Transfer rpm ownership back to core */
|
|
WARN(pm_runtime_get_sync(kdev) < 0,
|
|
"Failed to pass rpm ownership back to core\n");
|
|
|
|
pm_runtime_dont_use_autosuspend(kdev);
|
|
|
|
if (!HAS_RUNTIME_PM(i915))
|
|
pm_runtime_put(kdev);
|
|
}
|
|
|
|
void intel_runtime_pm_cleanup(struct drm_i915_private *i915)
|
|
{
|
|
struct i915_runtime_pm *rpm = &i915->runtime_pm;
|
|
int count = atomic_read(&rpm->wakeref_count);
|
|
|
|
WARN(count,
|
|
"i915 raw-wakerefs=%d wakelocks=%d on cleanup\n",
|
|
intel_rpm_raw_wakeref_count(count),
|
|
intel_rpm_wakelock_count(count));
|
|
|
|
untrack_all_intel_runtime_pm_wakerefs(i915);
|
|
}
|
|
|
|
void intel_runtime_pm_init_early(struct drm_i915_private *i915)
|
|
{
|
|
init_intel_runtime_pm_wakeref(i915);
|
|
}
|