309 lines
9.3 KiB
C
309 lines
9.3 KiB
C
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/*
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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/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_priv {
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u32 sdvox_reg;
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u32 save_SDVOX;
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bool has_hdmi_sink;
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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_output *intel_output = enc_to_intel_output(encoder);
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struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv;
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u32 sdvox;
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sdvox = SDVO_ENCODING_HDMI |
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SDVO_BORDER_ENABLE |
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SDVO_VSYNC_ACTIVE_HIGH |
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SDVO_HSYNC_ACTIVE_HIGH;
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if (hdmi_priv->has_hdmi_sink)
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sdvox |= SDVO_AUDIO_ENABLE;
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if (intel_crtc->pipe == 1)
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sdvox |= SDVO_PIPE_B_SELECT;
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I915_WRITE(hdmi_priv->sdvox_reg, sdvox);
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POSTING_READ(hdmi_priv->sdvox_reg);
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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_output *intel_output = enc_to_intel_output(encoder);
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struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv;
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u32 temp;
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temp = I915_READ(hdmi_priv->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 (IS_IGDNG(dev)) {
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I915_WRITE(hdmi_priv->sdvox_reg, temp & ~SDVO_ENABLE);
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POSTING_READ(hdmi_priv->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(hdmi_priv->sdvox_reg, temp);
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POSTING_READ(hdmi_priv->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 (IS_IGDNG(dev)) {
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I915_WRITE(hdmi_priv->sdvox_reg, temp);
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POSTING_READ(hdmi_priv->sdvox_reg);
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}
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}
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static void intel_hdmi_save(struct drm_connector *connector)
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{
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struct drm_device *dev = connector->dev;
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struct drm_i915_private *dev_priv = dev->dev_private;
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struct intel_output *intel_output = to_intel_output(connector);
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struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv;
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hdmi_priv->save_SDVOX = I915_READ(hdmi_priv->sdvox_reg);
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}
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static void intel_hdmi_restore(struct drm_connector *connector)
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{
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struct drm_device *dev = connector->dev;
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struct drm_i915_private *dev_priv = dev->dev_private;
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struct intel_output *intel_output = to_intel_output(connector);
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struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv;
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I915_WRITE(hdmi_priv->sdvox_reg, hdmi_priv->save_SDVOX);
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POSTING_READ(hdmi_priv->sdvox_reg);
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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_HIGH;
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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)
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{
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struct intel_output *intel_output = to_intel_output(connector);
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struct intel_hdmi_priv *hdmi_priv = intel_output->dev_priv;
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struct edid *edid = NULL;
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enum drm_connector_status status = connector_status_disconnected;
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hdmi_priv->has_hdmi_sink = false;
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edid = drm_get_edid(&intel_output->base,
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intel_output->ddc_bus);
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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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hdmi_priv->has_hdmi_sink = drm_detect_hdmi_monitor(edid);
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}
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intel_output->base.display_info.raw_edid = NULL;
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kfree(edid);
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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_output *intel_output = to_intel_output(connector);
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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(intel_output);
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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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struct intel_output *intel_output = to_intel_output(connector);
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if (intel_output->i2c_bus)
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intel_i2c_destroy(intel_output->i2c_bus);
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drm_sysfs_connector_remove(connector);
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drm_connector_cleanup(connector);
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kfree(intel_output);
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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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.save = intel_hdmi_save,
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.restore = intel_hdmi_restore,
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.detect = intel_hdmi_detect,
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.fill_modes = drm_helper_probe_single_connector_modes,
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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 void intel_hdmi_enc_destroy(struct drm_encoder *encoder)
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{
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drm_encoder_cleanup(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_hdmi_enc_destroy,
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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_output *intel_output;
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struct intel_hdmi_priv *hdmi_priv;
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intel_output = kcalloc(sizeof(struct intel_output) +
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sizeof(struct intel_hdmi_priv), 1, GFP_KERNEL);
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if (!intel_output)
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return;
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hdmi_priv = (struct intel_hdmi_priv *)(intel_output + 1);
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connector = &intel_output->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_output->type = INTEL_OUTPUT_HDMI;
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connector->interlace_allowed = 0;
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connector->doublescan_allowed = 0;
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intel_output->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_output->clone_mask = (1 << INTEL_HDMIB_CLONE_BIT);
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intel_output->ddc_bus = intel_i2c_create(dev, GPIOE, "HDMIB");
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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_output->clone_mask = (1 << INTEL_HDMIC_CLONE_BIT);
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intel_output->ddc_bus = intel_i2c_create(dev, GPIOD, "HDMIC");
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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_output->clone_mask = (1 << INTEL_HDMID_CLONE_BIT);
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intel_output->ddc_bus = intel_i2c_create(dev, PCH_GPIOE,
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"HDMIB");
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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_output->clone_mask = (1 << INTEL_HDMIE_CLONE_BIT);
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intel_output->ddc_bus = intel_i2c_create(dev, PCH_GPIOD,
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"HDMIC");
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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_output->clone_mask = (1 << INTEL_HDMIF_CLONE_BIT);
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intel_output->ddc_bus = intel_i2c_create(dev, PCH_GPIOF,
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"HDMID");
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dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS;
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}
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if (!intel_output->ddc_bus)
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goto err_connector;
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hdmi_priv->sdvox_reg = sdvox_reg;
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intel_output->dev_priv = hdmi_priv;
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drm_encoder_init(dev, &intel_output->enc, &intel_hdmi_enc_funcs,
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DRM_MODE_ENCODER_TMDS);
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drm_encoder_helper_add(&intel_output->enc, &intel_hdmi_helper_funcs);
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drm_mode_connector_attach_encoder(&intel_output->base,
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&intel_output->enc);
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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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return;
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err_connector:
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drm_connector_cleanup(connector);
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kfree(intel_output);
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return;
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}
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