diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_hdmi.c | 104 |
1 files changed, 96 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index 2cdab73046f8..2c3bd9c2573e 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -836,6 +836,22 @@ static void hsw_set_infoframes(struct drm_encoder *encoder, intel_hdmi_set_hdmi_infoframe(encoder, adjusted_mode); } +void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable) +{ + struct drm_i915_private *dev_priv = to_i915(intel_hdmi_to_dev(hdmi)); + struct i2c_adapter *adapter = + intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus); + + if (hdmi->dp_dual_mode.type < DRM_DP_DUAL_MODE_TYPE2_DVI) + return; + + DRM_DEBUG_KMS("%s DP dual mode adaptor TMDS output\n", + enable ? "Enabling" : "Disabling"); + + drm_dp_dual_mode_set_tmds_output(hdmi->dp_dual_mode.type, + adapter, enable); +} + static void intel_hdmi_prepare(struct intel_encoder *encoder) { struct drm_device *dev = encoder->base.dev; @@ -845,6 +861,8 @@ static void intel_hdmi_prepare(struct intel_encoder *encoder) const struct drm_display_mode *adjusted_mode = &crtc->config->base.adjusted_mode; u32 hdmi_val; + intel_dp_dual_mode_set_tmds_output(intel_hdmi, true); + hdmi_val = SDVO_ENCODING_HDMI; if (!HAS_PCH_SPLIT(dev) && crtc->config->limited_color_range) hdmi_val |= HDMI_COLOR_RANGE_16_235; @@ -953,6 +971,8 @@ static void intel_hdmi_get_config(struct intel_encoder *encoder, dotclock /= pipe_config->pixel_multiplier; pipe_config->base.adjusted_mode.crtc_clock = dotclock; + + pipe_config->lane_count = 4; } static void intel_enable_hdmi_audio(struct intel_encoder *encoder) @@ -1140,6 +1160,8 @@ static void intel_disable_hdmi(struct intel_encoder *encoder) } intel_hdmi->set_infoframes(&encoder->base, false, NULL); + + intel_dp_dual_mode_set_tmds_output(intel_hdmi, false); } static void g4x_disable_hdmi(struct intel_encoder *encoder) @@ -1165,27 +1187,42 @@ static void pch_post_disable_hdmi(struct intel_encoder *encoder) intel_disable_hdmi(encoder); } -static int hdmi_port_clock_limit(struct intel_hdmi *hdmi, bool respect_dvi_limit) +static int intel_hdmi_source_max_tmds_clock(struct drm_i915_private *dev_priv) { - struct drm_device *dev = intel_hdmi_to_dev(hdmi); - - if ((respect_dvi_limit && !hdmi->has_hdmi_sink) || IS_G4X(dev)) + if (IS_G4X(dev_priv)) return 165000; - else if (IS_HASWELL(dev) || INTEL_INFO(dev)->gen >= 8) + else if (IS_HASWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 8) return 300000; else return 225000; } +static int hdmi_port_clock_limit(struct intel_hdmi *hdmi, + bool respect_downstream_limits) +{ + struct drm_device *dev = intel_hdmi_to_dev(hdmi); + int max_tmds_clock = intel_hdmi_source_max_tmds_clock(to_i915(dev)); + + if (respect_downstream_limits) { + if (hdmi->dp_dual_mode.max_tmds_clock) + max_tmds_clock = min(max_tmds_clock, + hdmi->dp_dual_mode.max_tmds_clock); + if (!hdmi->has_hdmi_sink) + max_tmds_clock = min(max_tmds_clock, 165000); + } + + return max_tmds_clock; +} + static enum drm_mode_status hdmi_port_clock_valid(struct intel_hdmi *hdmi, - int clock, bool respect_dvi_limit) + int clock, bool respect_downstream_limits) { struct drm_device *dev = intel_hdmi_to_dev(hdmi); if (clock < 25000) return MODE_CLOCK_LOW; - if (clock > hdmi_port_clock_limit(hdmi, respect_dvi_limit)) + if (clock > hdmi_port_clock_limit(hdmi, respect_downstream_limits)) return MODE_CLOCK_HIGH; /* BXT DPLL can't generate 223-240 MHz */ @@ -1309,7 +1346,7 @@ bool intel_hdmi_compute_config(struct intel_encoder *encoder, * within limits. */ if (pipe_config->pipe_bpp > 8*3 && pipe_config->has_hdmi_sink && - hdmi_port_clock_valid(intel_hdmi, clock_12bpc, false) == MODE_OK && + hdmi_port_clock_valid(intel_hdmi, clock_12bpc, true) == MODE_OK && hdmi_12bpc_possible(pipe_config)) { DRM_DEBUG_KMS("picking bpc to 12 for HDMI output\n"); desired_bpp = 12*3; @@ -1337,6 +1374,8 @@ bool intel_hdmi_compute_config(struct intel_encoder *encoder, /* Set user selected PAR to incoming mode's member */ adjusted_mode->picture_aspect_ratio = intel_hdmi->aspect_ratio; + pipe_config->lane_count = 4; + return true; } @@ -1349,10 +1388,57 @@ intel_hdmi_unset_edid(struct drm_connector *connector) intel_hdmi->has_audio = false; intel_hdmi->rgb_quant_range_selectable = false; + intel_hdmi->dp_dual_mode.type = DRM_DP_DUAL_MODE_NONE; + intel_hdmi->dp_dual_mode.max_tmds_clock = 0; + kfree(to_intel_connector(connector)->detect_edid); to_intel_connector(connector)->detect_edid = NULL; } +static void +intel_hdmi_dp_dual_mode_detect(struct drm_connector *connector, bool has_edid) +{ + struct drm_i915_private *dev_priv = to_i915(connector->dev); + struct intel_hdmi *hdmi = intel_attached_hdmi(connector); + enum port port = hdmi_to_dig_port(hdmi)->port; + struct i2c_adapter *adapter = + intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus); + enum drm_dp_dual_mode_type type = drm_dp_dual_mode_detect(adapter); + + /* + * Type 1 DVI adaptors are not required to implement any + * registers, so we can't always detect their presence. + * Ideally we should be able to check the state of the + * CONFIG1 pin, but no such luck on our hardware. + * + * The only method left to us is to check the VBT to see + * if the port is a dual mode capable DP port. But let's + * only do that when we sucesfully read the EDID, to avoid + * confusing log messages about DP dual mode adaptors when + * there's nothing connected to the port. + */ + if (type == DRM_DP_DUAL_MODE_UNKNOWN) { + if (has_edid && + intel_bios_is_port_dp_dual_mode(dev_priv, port)) { + DRM_DEBUG_KMS("Assuming DP dual mode adaptor presence based on VBT\n"); + type = DRM_DP_DUAL_MODE_TYPE1_DVI; + } else { + type = DRM_DP_DUAL_MODE_NONE; + } + } + + if (type == DRM_DP_DUAL_MODE_NONE) + return; + + hdmi->dp_dual_mode.type = type; + hdmi->dp_dual_mode.max_tmds_clock = + drm_dp_dual_mode_max_tmds_clock(type, adapter); + + DRM_DEBUG_KMS("DP dual mode adaptor (%s) detected (max TMDS clock: %d kHz)\n", + drm_dp_get_dual_mode_type_name(type), + hdmi->dp_dual_mode.max_tmds_clock); +} + static bool intel_hdmi_set_edid(struct drm_connector *connector, bool force) { @@ -1368,6 +1454,8 @@ intel_hdmi_set_edid(struct drm_connector *connector, bool force) intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus)); + intel_hdmi_dp_dual_mode_detect(connector, edid != NULL); + intel_display_power_put(dev_priv, POWER_DOMAIN_GMBUS); } |