/* * Copyright © 2015 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. * */ /* * Laptops with Intel GPUs which have panels that support controlling the * backlight through DP AUX can actually use two different interfaces: Intel's * proprietary DP AUX backlight interface, and the standard VESA backlight * interface. Unfortunately, at the time of writing this a lot of laptops will * advertise support for the standard VESA backlight interface when they * don't properly support it. However, on these systems the Intel backlight * interface generally does work properly. Additionally, these systems will * usually just indicate that they use PWM backlight controls in their VBIOS * for some reason. */ #include "i915_drv.h" #include "intel_backlight.h" #include "intel_display_types.h" #include "intel_dp.h" #include "intel_dp_aux_backlight.h" /* * DP AUX registers for Intel's proprietary HDR backlight interface. We define * them here since we'll likely be the only driver to ever use these. */ #define INTEL_EDP_HDR_TCON_CAP0 … #define INTEL_EDP_HDR_TCON_CAP1 … #define INTEL_EDP_HDR_TCON_2084_DECODE_CAP … #define INTEL_EDP_HDR_TCON_2020_GAMUT_CAP … #define INTEL_EDP_HDR_TCON_TONE_MAPPING_CAP … #define INTEL_EDP_HDR_TCON_SEGMENTED_BACKLIGHT_CAP … #define INTEL_EDP_HDR_TCON_BRIGHTNESS_NITS_CAP … #define INTEL_EDP_HDR_TCON_OPTIMIZATION_CAP … #define INTEL_EDP_HDR_TCON_SDP_COLORIMETRY_CAP … #define INTEL_EDP_HDR_TCON_SRGB_TO_PANEL_GAMUT_CONVERSION_CAP … #define INTEL_EDP_HDR_TCON_CAP2 … #define INTEL_EDP_SDR_TCON_BRIGHTNESS_AUX_CAP … #define INTEL_EDP_HDR_TCON_CAP3 … #define INTEL_EDP_HDR_GETSET_CTRL_PARAMS … #define INTEL_EDP_HDR_TCON_2084_DECODE_ENABLE … #define INTEL_EDP_HDR_TCON_2020_GAMUT_ENABLE … #define INTEL_EDP_HDR_TCON_TONE_MAPPING_ENABLE … #define INTEL_EDP_HDR_TCON_SEGMENTED_BACKLIGHT_ENABLE … #define INTEL_EDP_HDR_TCON_BRIGHTNESS_AUX_ENABLE … #define INTEL_EDP_HDR_TCON_SRGB_TO_PANEL_GAMUT_ENABLE … /* Bit 6 is reserved */ #define INTEL_EDP_HDR_TCON_SDP_OVERRIDE_AUX … #define INTEL_EDP_HDR_CONTENT_LUMINANCE … #define INTEL_EDP_HDR_PANEL_LUMINANCE_OVERRIDE … #define INTEL_EDP_SDR_LUMINANCE_LEVEL … #define INTEL_EDP_BRIGHTNESS_NITS_LSB … #define INTEL_EDP_BRIGHTNESS_NITS_MSB … #define INTEL_EDP_BRIGHTNESS_DELAY_FRAMES … #define INTEL_EDP_BRIGHTNESS_PER_FRAME_STEPS … #define INTEL_EDP_BRIGHTNESS_OPTIMIZATION_0 … #define INTEL_EDP_TCON_USAGE_MASK … #define INTEL_EDP_TCON_USAGE_UNKNOWN … #define INTEL_EDP_TCON_USAGE_DESKTOP … #define INTEL_EDP_TCON_USAGE_FULL_SCREEN_MEDIA … #define INTEL_EDP_TCON_USAGE_FULL_SCREEN_GAMING … #define INTEL_EDP_TCON_POWER_MASK … #define INTEL_EDP_TCON_POWER_DC … #define INTEL_EDP_TCON_POWER_AC … #define INTEL_EDP_TCON_OPTIMIZATION_STRENGTH_MASK … #define INTEL_EDP_BRIGHTNESS_OPTIMIZATION_1 … enum intel_dp_aux_backlight_modparam { … }; static bool is_intel_tcon_cap(const u8 tcon_cap[4]) { … } /* Intel EDP backlight callbacks */ static bool intel_dp_aux_supports_hdr_backlight(struct intel_connector *connector) { … } static u32 intel_dp_aux_hdr_get_backlight(struct intel_connector *connector, enum pipe pipe) { … } static void intel_dp_aux_hdr_set_aux_backlight(const struct drm_connector_state *conn_state, u32 level) { … } static bool intel_dp_in_hdr_mode(const struct drm_connector_state *conn_state) { … } static void intel_dp_aux_hdr_set_backlight(const struct drm_connector_state *conn_state, u32 level) { … } static void intel_dp_aux_write_content_luminance(struct intel_connector *connector, struct hdr_output_metadata *hdr_metadata) { … } static void intel_dp_aux_fill_hdr_tcon_params(const struct drm_connector_state *conn_state, u8 *ctrl) { … } static void intel_dp_aux_hdr_enable_backlight(const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state, u32 level) { … } static void intel_dp_aux_hdr_disable_backlight(const struct drm_connector_state *conn_state, u32 level) { … } static const char *dpcd_vs_pwm_str(bool aux) { … } static void intel_dp_aux_write_panel_luminance_override(struct intel_connector *connector) { … } static int intel_dp_aux_hdr_setup_backlight(struct intel_connector *connector, enum pipe pipe) { … } /* VESA backlight callbacks */ static u32 intel_dp_aux_vesa_get_backlight(struct intel_connector *connector, enum pipe unused) { … } static void intel_dp_aux_vesa_set_backlight(const struct drm_connector_state *conn_state, u32 level) { … } static void intel_dp_aux_vesa_enable_backlight(const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state, u32 level) { … } static void intel_dp_aux_vesa_disable_backlight(const struct drm_connector_state *old_conn_state, u32 level) { … } static int intel_dp_aux_vesa_setup_backlight(struct intel_connector *connector, enum pipe pipe) { … } static bool intel_dp_aux_supports_vesa_backlight(struct intel_connector *connector) { … } static const struct intel_panel_bl_funcs intel_dp_hdr_bl_funcs = …; static const struct intel_panel_bl_funcs intel_dp_vesa_bl_funcs = …; int intel_dp_aux_init_backlight_funcs(struct intel_connector *connector) { … }
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