446 lines
12 KiB
C
446 lines
12 KiB
C
/*
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* Copyright 2006 Dave Airlie <airlied@linux.ie>
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* Copyright © 2006-2009 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
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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* Jesse Barnes <jesse.barnes@intel.com>
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*/
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#include <linux/i2c.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include "drmP.h"
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#include "drm.h"
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#include "drm_crtc.h"
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#include "drm_edid.h"
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#include "intel_drv.h"
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#include "i915_drm.h"
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#include "i915_drv.h"
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struct intel_hdmi {
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struct intel_encoder base;
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u32 sdvox_reg;
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int ddc_bus;
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uint32_t color_range;
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bool has_hdmi_sink;
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bool has_audio;
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int force_audio;
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};
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static struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder)
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{
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return container_of(encoder, struct intel_hdmi, base.base);
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}
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static struct intel_hdmi *intel_attached_hdmi(struct drm_connector *connector)
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{
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return container_of(intel_attached_encoder(connector),
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struct intel_hdmi, base);
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}
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void intel_dip_infoframe_csum(struct dip_infoframe *avi_if)
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{
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uint8_t *data = (uint8_t *)avi_if;
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uint8_t sum = 0;
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unsigned i;
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avi_if->checksum = 0;
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avi_if->ecc = 0;
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for (i = 0; i < sizeof(*avi_if); i++)
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sum += data[i];
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avi_if->checksum = 0x100 - sum;
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}
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static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
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{
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struct dip_infoframe avi_if = {
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.type = DIP_TYPE_AVI,
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.ver = DIP_VERSION_AVI,
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.len = DIP_LEN_AVI,
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};
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uint32_t *data = (uint32_t *)&avi_if;
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struct drm_device *dev = encoder->dev;
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struct drm_i915_private *dev_priv = dev->dev_private;
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struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
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u32 port;
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unsigned i;
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if (!intel_hdmi->has_hdmi_sink)
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return;
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/* XXX first guess at handling video port, is this corrent? */
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if (intel_hdmi->sdvox_reg == SDVOB)
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port = VIDEO_DIP_PORT_B;
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else if (intel_hdmi->sdvox_reg == SDVOC)
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port = VIDEO_DIP_PORT_C;
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else
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return;
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I915_WRITE(VIDEO_DIP_CTL, VIDEO_DIP_ENABLE | port |
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VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC);
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intel_dip_infoframe_csum(&avi_if);
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for (i = 0; i < sizeof(avi_if); i += 4) {
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I915_WRITE(VIDEO_DIP_DATA, *data);
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data++;
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}
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I915_WRITE(VIDEO_DIP_CTL, VIDEO_DIP_ENABLE | port |
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VIDEO_DIP_SELECT_AVI | VIDEO_DIP_FREQ_VSYNC |
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VIDEO_DIP_ENABLE_AVI);
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}
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static void intel_hdmi_mode_set(struct drm_encoder *encoder,
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode)
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{
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struct drm_device *dev = encoder->dev;
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struct drm_i915_private *dev_priv = dev->dev_private;
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struct drm_crtc *crtc = encoder->crtc;
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struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
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struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
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u32 sdvox;
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sdvox = SDVO_ENCODING_HDMI | SDVO_BORDER_ENABLE;
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sdvox |= intel_hdmi->color_range;
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if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
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sdvox |= SDVO_VSYNC_ACTIVE_HIGH;
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if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
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sdvox |= SDVO_HSYNC_ACTIVE_HIGH;
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/* Required on CPT */
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if (intel_hdmi->has_hdmi_sink && HAS_PCH_CPT(dev))
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sdvox |= HDMI_MODE_SELECT;
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if (intel_hdmi->has_audio) {
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sdvox |= SDVO_AUDIO_ENABLE;
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sdvox |= SDVO_NULL_PACKETS_DURING_VSYNC;
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}
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if (intel_crtc->pipe == 1) {
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if (HAS_PCH_CPT(dev))
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sdvox |= PORT_TRANS_B_SEL_CPT;
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else
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sdvox |= SDVO_PIPE_B_SELECT;
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}
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I915_WRITE(intel_hdmi->sdvox_reg, sdvox);
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POSTING_READ(intel_hdmi->sdvox_reg);
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intel_hdmi_set_avi_infoframe(encoder);
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}
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static void intel_hdmi_dpms(struct drm_encoder *encoder, int mode)
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{
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struct drm_device *dev = encoder->dev;
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struct drm_i915_private *dev_priv = dev->dev_private;
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struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
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u32 temp;
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temp = I915_READ(intel_hdmi->sdvox_reg);
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/* HW workaround, need to toggle enable bit off and on for 12bpc, but
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* we do this anyway which shows more stable in testing.
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*/
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if (HAS_PCH_SPLIT(dev)) {
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I915_WRITE(intel_hdmi->sdvox_reg, temp & ~SDVO_ENABLE);
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POSTING_READ(intel_hdmi->sdvox_reg);
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}
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if (mode != DRM_MODE_DPMS_ON) {
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temp &= ~SDVO_ENABLE;
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} else {
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temp |= SDVO_ENABLE;
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}
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I915_WRITE(intel_hdmi->sdvox_reg, temp);
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POSTING_READ(intel_hdmi->sdvox_reg);
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/* HW workaround, need to write this twice for issue that may result
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* in first write getting masked.
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*/
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if (HAS_PCH_SPLIT(dev)) {
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I915_WRITE(intel_hdmi->sdvox_reg, temp);
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POSTING_READ(intel_hdmi->sdvox_reg);
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}
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}
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static int intel_hdmi_mode_valid(struct drm_connector *connector,
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struct drm_display_mode *mode)
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{
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if (mode->clock > 165000)
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return MODE_CLOCK_HIGH;
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if (mode->clock < 20000)
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return MODE_CLOCK_LOW;
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if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
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return MODE_NO_DBLESCAN;
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return MODE_OK;
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}
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static bool intel_hdmi_mode_fixup(struct drm_encoder *encoder,
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struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode)
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{
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return true;
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}
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static enum drm_connector_status
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intel_hdmi_detect(struct drm_connector *connector, bool force)
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{
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struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
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struct drm_i915_private *dev_priv = connector->dev->dev_private;
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struct edid *edid;
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enum drm_connector_status status = connector_status_disconnected;
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intel_hdmi->has_hdmi_sink = false;
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intel_hdmi->has_audio = false;
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edid = drm_get_edid(connector,
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&dev_priv->gmbus[intel_hdmi->ddc_bus].adapter);
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if (edid) {
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if (edid->input & DRM_EDID_INPUT_DIGITAL) {
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status = connector_status_connected;
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intel_hdmi->has_hdmi_sink = drm_detect_hdmi_monitor(edid);
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intel_hdmi->has_audio = drm_detect_monitor_audio(edid);
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}
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connector->display_info.raw_edid = NULL;
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kfree(edid);
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}
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if (status == connector_status_connected) {
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if (intel_hdmi->force_audio)
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intel_hdmi->has_audio = intel_hdmi->force_audio > 0;
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}
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return status;
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}
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static int intel_hdmi_get_modes(struct drm_connector *connector)
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{
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struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
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struct drm_i915_private *dev_priv = connector->dev->dev_private;
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/* We should parse the EDID data and find out if it's an HDMI sink so
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* we can send audio to it.
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*/
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return intel_ddc_get_modes(connector,
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&dev_priv->gmbus[intel_hdmi->ddc_bus].adapter);
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}
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static bool
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intel_hdmi_detect_audio(struct drm_connector *connector)
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{
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struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
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struct drm_i915_private *dev_priv = connector->dev->dev_private;
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struct edid *edid;
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bool has_audio = false;
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edid = drm_get_edid(connector,
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&dev_priv->gmbus[intel_hdmi->ddc_bus].adapter);
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if (edid) {
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if (edid->input & DRM_EDID_INPUT_DIGITAL)
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has_audio = drm_detect_monitor_audio(edid);
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connector->display_info.raw_edid = NULL;
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kfree(edid);
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}
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return has_audio;
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}
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static int
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intel_hdmi_set_property(struct drm_connector *connector,
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struct drm_property *property,
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uint64_t val)
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{
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struct intel_hdmi *intel_hdmi = intel_attached_hdmi(connector);
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struct drm_i915_private *dev_priv = connector->dev->dev_private;
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int ret;
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ret = drm_connector_property_set_value(connector, property, val);
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if (ret)
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return ret;
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if (property == dev_priv->force_audio_property) {
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int i = val;
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bool has_audio;
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if (i == intel_hdmi->force_audio)
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return 0;
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intel_hdmi->force_audio = i;
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if (i == 0)
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has_audio = intel_hdmi_detect_audio(connector);
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else
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has_audio = i > 0;
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if (has_audio == intel_hdmi->has_audio)
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return 0;
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intel_hdmi->has_audio = has_audio;
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goto done;
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}
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if (property == dev_priv->broadcast_rgb_property) {
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if (val == !!intel_hdmi->color_range)
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return 0;
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intel_hdmi->color_range = val ? SDVO_COLOR_RANGE_16_235 : 0;
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goto done;
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}
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return -EINVAL;
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done:
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if (intel_hdmi->base.base.crtc) {
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struct drm_crtc *crtc = intel_hdmi->base.base.crtc;
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drm_crtc_helper_set_mode(crtc, &crtc->mode,
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crtc->x, crtc->y,
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crtc->fb);
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}
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return 0;
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}
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static void intel_hdmi_destroy(struct drm_connector *connector)
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{
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drm_sysfs_connector_remove(connector);
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drm_connector_cleanup(connector);
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kfree(connector);
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}
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static const struct drm_encoder_helper_funcs intel_hdmi_helper_funcs = {
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.dpms = intel_hdmi_dpms,
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.mode_fixup = intel_hdmi_mode_fixup,
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.prepare = intel_encoder_prepare,
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.mode_set = intel_hdmi_mode_set,
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.commit = intel_encoder_commit,
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};
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static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
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.dpms = drm_helper_connector_dpms,
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.detect = intel_hdmi_detect,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.set_property = intel_hdmi_set_property,
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.destroy = intel_hdmi_destroy,
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};
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static const struct drm_connector_helper_funcs intel_hdmi_connector_helper_funcs = {
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.get_modes = intel_hdmi_get_modes,
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.mode_valid = intel_hdmi_mode_valid,
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.best_encoder = intel_best_encoder,
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};
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static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
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.destroy = intel_encoder_destroy,
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};
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static void
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intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
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{
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intel_attach_force_audio_property(connector);
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intel_attach_broadcast_rgb_property(connector);
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}
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void intel_hdmi_init(struct drm_device *dev, int sdvox_reg)
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{
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struct drm_i915_private *dev_priv = dev->dev_private;
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struct drm_connector *connector;
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struct intel_encoder *intel_encoder;
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struct intel_connector *intel_connector;
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struct intel_hdmi *intel_hdmi;
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intel_hdmi = kzalloc(sizeof(struct intel_hdmi), GFP_KERNEL);
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if (!intel_hdmi)
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return;
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intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
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if (!intel_connector) {
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kfree(intel_hdmi);
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return;
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}
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intel_encoder = &intel_hdmi->base;
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drm_encoder_init(dev, &intel_encoder->base, &intel_hdmi_enc_funcs,
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DRM_MODE_ENCODER_TMDS);
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connector = &intel_connector->base;
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drm_connector_init(dev, connector, &intel_hdmi_connector_funcs,
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DRM_MODE_CONNECTOR_HDMIA);
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drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
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intel_encoder->type = INTEL_OUTPUT_HDMI;
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connector->polled = DRM_CONNECTOR_POLL_HPD;
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connector->interlace_allowed = 0;
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connector->doublescan_allowed = 0;
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intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
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/* Set up the DDC bus. */
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if (sdvox_reg == SDVOB) {
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intel_encoder->clone_mask = (1 << INTEL_HDMIB_CLONE_BIT);
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intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
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dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
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} else if (sdvox_reg == SDVOC) {
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intel_encoder->clone_mask = (1 << INTEL_HDMIC_CLONE_BIT);
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intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
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dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
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} else if (sdvox_reg == HDMIB) {
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intel_encoder->clone_mask = (1 << INTEL_HDMID_CLONE_BIT);
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intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
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dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
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} else if (sdvox_reg == HDMIC) {
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intel_encoder->clone_mask = (1 << INTEL_HDMIE_CLONE_BIT);
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intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
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dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
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} else if (sdvox_reg == HDMID) {
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intel_encoder->clone_mask = (1 << INTEL_HDMIF_CLONE_BIT);
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intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
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dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS;
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}
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intel_hdmi->sdvox_reg = sdvox_reg;
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drm_encoder_helper_add(&intel_encoder->base, &intel_hdmi_helper_funcs);
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intel_hdmi_add_properties(intel_hdmi, connector);
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intel_connector_attach_encoder(intel_connector, intel_encoder);
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drm_sysfs_connector_add(connector);
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/* For G4X desktop chip, PEG_BAND_GAP_DATA 3:0 must first be written
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* 0xd. Failure to do so will result in spurious interrupts being
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* generated on the port when a cable is not attached.
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*/
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if (IS_G4X(dev) && !IS_GM45(dev)) {
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u32 temp = I915_READ(PEG_BAND_GAP_DATA);
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I915_WRITE(PEG_BAND_GAP_DATA, (temp & ~0xf) | 0xd);
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}
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}
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