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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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90f8ed85c6
The SDVO/HDMI port register limited color range bit can only be used with TMDS encoding and not SDVO encoding, ie. to be used only when using the port as a HDMI port as opposed to a SDVO port. The SDVO spec does have a note that some GMCHs might allow that, but gen4 bspec vehemently disagrees. I suppose on ILK+ it might work since the color range handling is on the CPU side rather than on the PCH side, so there is no clear linkage between the TMDS vs. SDVO encoding and color range. Alas, I have no hardware to test that theory. To implement limited color range support for SDVO->HDMI we need to ask the SDVO device to do the range compression. Do so, but first check if the device even supports the colorimetry selection. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200108181242.13650-5-ville.syrjala@linux.intel.com Reviewed-by: Imre Deak <imre.deak@intel.com>
53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2019 Intel Corporation
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*/
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#ifndef __INTEL_HDMI_H__
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#define __INTEL_HDMI_H__
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#include <linux/hdmi.h>
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#include <linux/types.h>
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#include "i915_reg.h"
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struct drm_connector;
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struct drm_encoder;
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struct drm_i915_private;
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struct intel_connector;
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struct intel_digital_port;
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struct intel_encoder;
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struct intel_crtc_state;
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struct intel_hdmi;
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struct drm_connector_state;
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union hdmi_infoframe;
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enum port;
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void intel_hdmi_init(struct drm_i915_private *dev_priv, i915_reg_t hdmi_reg,
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enum port port);
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void intel_hdmi_init_connector(struct intel_digital_port *dig_port,
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struct intel_connector *intel_connector);
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struct intel_hdmi *enc_to_intel_hdmi(struct intel_encoder *encoder);
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int intel_hdmi_compute_config(struct intel_encoder *encoder,
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struct intel_crtc_state *pipe_config,
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struct drm_connector_state *conn_state);
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bool intel_hdmi_handle_sink_scrambling(struct intel_encoder *encoder,
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struct drm_connector *connector,
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bool high_tmds_clock_ratio,
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bool scrambling);
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void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable);
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void intel_infoframe_init(struct intel_digital_port *dig_port);
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u32 intel_hdmi_infoframes_enabled(struct intel_encoder *encoder,
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const struct intel_crtc_state *crtc_state);
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u32 intel_hdmi_infoframe_enable(unsigned int type);
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void intel_hdmi_read_gcp_infoframe(struct intel_encoder *encoder,
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struct intel_crtc_state *crtc_state);
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void intel_read_infoframe(struct intel_encoder *encoder,
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const struct intel_crtc_state *crtc_state,
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enum hdmi_infoframe_type type,
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union hdmi_infoframe *frame);
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bool intel_hdmi_limited_color_range(const struct intel_crtc_state *crtc_state,
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const struct drm_connector_state *conn_state);
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#endif /* __INTEL_HDMI_H__ */
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