291 lines
8.6 KiB
C
291 lines
8.6 KiB
C
/*
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* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
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* Copyright (C) 2013 Red Hat
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* Author: Rob Clark <robdclark@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __DPU_KMS_H__
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#define __DPU_KMS_H__
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#include "msm_drv.h"
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#include "msm_kms.h"
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#include "msm_mmu.h"
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#include "msm_gem.h"
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#include "dpu_dbg.h"
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#include "dpu_hw_catalog.h"
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#include "dpu_hw_ctl.h"
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#include "dpu_hw_lm.h"
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#include "dpu_hw_interrupts.h"
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#include "dpu_hw_top.h"
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#include "dpu_rm.h"
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#include "dpu_power_handle.h"
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#include "dpu_irq.h"
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#include "dpu_core_perf.h"
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#define DRMID(x) ((x) ? (x)->base.id : -1)
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/**
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* DPU_DEBUG - macro for kms/plane/crtc/encoder/connector logs
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* @fmt: Pointer to format string
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*/
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#define DPU_DEBUG(fmt, ...) \
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do { \
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if (unlikely(drm_debug & DRM_UT_KMS)) \
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DRM_DEBUG(fmt, ##__VA_ARGS__); \
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else \
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pr_debug(fmt, ##__VA_ARGS__); \
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} while (0)
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/**
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* DPU_DEBUG_DRIVER - macro for hardware driver logging
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* @fmt: Pointer to format string
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*/
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#define DPU_DEBUG_DRIVER(fmt, ...) \
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do { \
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if (unlikely(drm_debug & DRM_UT_DRIVER)) \
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DRM_ERROR(fmt, ##__VA_ARGS__); \
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else \
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pr_debug(fmt, ##__VA_ARGS__); \
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} while (0)
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#define DPU_ERROR(fmt, ...) pr_err("[dpu error]" fmt, ##__VA_ARGS__)
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/**
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* ktime_compare_safe - compare two ktime structures
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* This macro is similar to the standard ktime_compare() function, but
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* attempts to also handle ktime overflows.
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* @A: First ktime value
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* @B: Second ktime value
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* Returns: -1 if A < B, 0 if A == B, 1 if A > B
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*/
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#define ktime_compare_safe(A, B) \
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ktime_compare(ktime_sub((A), (B)), ktime_set(0, 0))
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#define DPU_NAME_SIZE 12
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/* timeout in frames waiting for frame done */
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#define DPU_FRAME_DONE_TIMEOUT 60
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/*
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* struct dpu_irq_callback - IRQ callback handlers
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* @list: list to callback
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* @func: intr handler
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* @arg: argument for the handler
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*/
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struct dpu_irq_callback {
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struct list_head list;
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void (*func)(void *arg, int irq_idx);
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void *arg;
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};
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/**
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* struct dpu_irq: IRQ structure contains callback registration info
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* @total_irq: total number of irq_idx obtained from HW interrupts mapping
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* @irq_cb_tbl: array of IRQ callbacks setting
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* @enable_counts array of IRQ enable counts
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* @cb_lock: callback lock
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* @debugfs_file: debugfs file for irq statistics
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*/
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struct dpu_irq {
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u32 total_irqs;
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struct list_head *irq_cb_tbl;
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atomic_t *enable_counts;
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atomic_t *irq_counts;
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spinlock_t cb_lock;
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struct dentry *debugfs_file;
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};
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struct dpu_kms {
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struct msm_kms base;
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struct drm_device *dev;
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int core_rev;
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struct dpu_mdss_cfg *catalog;
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struct dpu_power_handle phandle;
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struct dpu_power_client *core_client;
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struct dpu_power_event *power_event;
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/* directory entry for debugfs */
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struct dentry *debugfs_root;
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struct dentry *debugfs_danger;
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struct dentry *debugfs_vbif;
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/* io/register spaces: */
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void __iomem *mmio, *vbif[VBIF_MAX], *reg_dma;
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unsigned long mmio_len, vbif_len[VBIF_MAX], reg_dma_len;
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struct regulator *vdd;
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struct regulator *mmagic;
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struct regulator *venus;
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struct dpu_hw_intr *hw_intr;
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struct dpu_irq irq_obj;
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struct dpu_core_perf perf;
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/* saved atomic state during system suspend */
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struct drm_atomic_state *suspend_state;
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bool suspend_block;
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struct dpu_rm rm;
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bool rm_init;
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struct dpu_hw_vbif *hw_vbif[VBIF_MAX];
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struct dpu_hw_mdp *hw_mdp;
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bool has_danger_ctrl;
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struct platform_device *pdev;
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bool rpm_enabled;
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struct dss_module_power mp;
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};
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struct vsync_info {
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u32 frame_count;
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u32 line_count;
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};
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#define to_dpu_kms(x) container_of(x, struct dpu_kms, base)
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/* get struct msm_kms * from drm_device * */
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#define ddev_to_msm_kms(D) ((D) && (D)->dev_private ? \
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((struct msm_drm_private *)((D)->dev_private))->kms : NULL)
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/**
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* dpu_kms_is_suspend_state - whether or not the system is pm suspended
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* @dev: Pointer to drm device
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* Return: Suspend status
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*/
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static inline bool dpu_kms_is_suspend_state(struct drm_device *dev)
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{
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if (!ddev_to_msm_kms(dev))
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return false;
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return to_dpu_kms(ddev_to_msm_kms(dev))->suspend_state != NULL;
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}
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/**
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* dpu_kms_is_suspend_blocked - whether or not commits are blocked due to pm
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* suspend status
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* @dev: Pointer to drm device
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* Return: True if commits should be rejected due to pm suspend
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*/
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static inline bool dpu_kms_is_suspend_blocked(struct drm_device *dev)
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{
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if (!dpu_kms_is_suspend_state(dev))
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return false;
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return to_dpu_kms(ddev_to_msm_kms(dev))->suspend_block;
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}
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/**
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* Debugfs functions - extra helper functions for debugfs support
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*
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* Main debugfs documentation is located at,
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*
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* Documentation/filesystems/debugfs.txt
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*
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* @dpu_debugfs_setup_regset32: Initialize data for dpu_debugfs_create_regset32
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* @dpu_debugfs_create_regset32: Create 32-bit register dump file
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* @dpu_debugfs_get_root: Get root dentry for DPU_KMS's debugfs node
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*/
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/**
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* Companion structure for dpu_debugfs_create_regset32. Do not initialize the
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* members of this structure explicitly; use dpu_debugfs_setup_regset32 instead.
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*/
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struct dpu_debugfs_regset32 {
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uint32_t offset;
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uint32_t blk_len;
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struct dpu_kms *dpu_kms;
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};
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/**
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* dpu_debugfs_setup_regset32 - Initialize register block definition for debugfs
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* This function is meant to initialize dpu_debugfs_regset32 structures for use
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* with dpu_debugfs_create_regset32.
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* @regset: opaque register definition structure
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* @offset: sub-block offset
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* @length: sub-block length, in bytes
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* @dpu_kms: pointer to dpu kms structure
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*/
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void dpu_debugfs_setup_regset32(struct dpu_debugfs_regset32 *regset,
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uint32_t offset, uint32_t length, struct dpu_kms *dpu_kms);
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/**
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* dpu_debugfs_create_regset32 - Create register read back file for debugfs
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*
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* This function is almost identical to the standard debugfs_create_regset32()
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* function, with the main difference being that a list of register
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* names/offsets do not need to be provided. The 'read' function simply outputs
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* sequential register values over a specified range.
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*
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* Similar to the related debugfs_create_regset32 API, the structure pointed to
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* by regset needs to persist for the lifetime of the created file. The calling
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* code is responsible for initialization/management of this structure.
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*
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* The structure pointed to by regset is meant to be opaque. Please use
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* dpu_debugfs_setup_regset32 to initialize it.
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*
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* @name: File name within debugfs
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* @mode: File mode within debugfs
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* @parent: Parent directory entry within debugfs, can be NULL
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* @regset: Pointer to persistent register block definition
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*
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* Return: dentry pointer for newly created file, use either debugfs_remove()
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* or debugfs_remove_recursive() (on a parent directory) to remove the
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* file
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*/
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void *dpu_debugfs_create_regset32(const char *name, umode_t mode,
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void *parent, struct dpu_debugfs_regset32 *regset);
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/**
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* dpu_debugfs_get_root - Return root directory entry for KMS's debugfs
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*
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* The return value should be passed as the 'parent' argument to subsequent
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* debugfs create calls.
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*
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* @dpu_kms: Pointer to DPU's KMS structure
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*
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* Return: dentry pointer for DPU's debugfs location
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*/
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void *dpu_debugfs_get_root(struct dpu_kms *dpu_kms);
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/**
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* DPU info management functions
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* These functions/definitions allow for building up a 'dpu_info' structure
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* containing one or more "key=value\n" entries.
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*/
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#define DPU_KMS_INFO_MAX_SIZE 4096
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/**
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* Vblank enable/disable functions
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*/
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int dpu_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc);
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void dpu_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc);
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void dpu_kms_encoder_enable(struct drm_encoder *encoder);
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/**
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* dpu_kms_get_clk_rate() - get the clock rate
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* @dpu_kms: poiner to dpu_kms structure
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* @clock_name: clock name to get the rate
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*
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* Return: current clock rate
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*/
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u64 dpu_kms_get_clk_rate(struct dpu_kms *dpu_kms, char *clock_name);
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#endif /* __dpu_kms_H__ */
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