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e7156c8339
This patch adds support for eDP backlight control using DPCD registers to
backlight hooks in intel_panel.
It checks for backlight control over AUX channel capability and sets up
function pointers to get and set the backlight brightness level if
supported.
v2: Moved backlight functions from intel_dp.c into a new file
intel_dp_aux_backlight.c. Also moved reading of eDP display control
registers to intel_dp_get_dpcd
v3: Correct some formatting mistakes
v4: Updated to use AUX backlight control if PWM control is not possible
(Jani)
v5: Moved call to initialize backlight registers to dp_aux_setup_backlight
v6: Check DP_EDP_BACKLIGHT_PIN_ENABLE_CAP is disabled before setting up AUX
backlight control. To fix BLM_PWM_ENABLE igt test warnings on bdw_ultra
v7: Add enable_dpcd_backlight module parameter.
v8: Rebase onto latest drm-intel-nightly branch
v9: Remove changes to intel_dp_dpcd_read_wake
Split addition edp_dpcd variable into a separate patch
Cc: Bob Paauwe <bob.j.paauwe@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Yetunde Adebisi <yetundex.adebisi@intel.com>
[Jani: whitepace changes to appease checkpatch]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1459865452-9138-4-git-send-email-yetundex.adebisi@intel.com
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/*
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* Copyright © 2015 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 DEALINGS
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* IN THE SOFTWARE.
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*
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*/
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#ifndef _I915_PARAMS_H_
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#define _I915_PARAMS_H_
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#include <linux/cache.h> /* for __read_mostly */
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struct i915_params {
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int modeset;
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int panel_ignore_lid;
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int semaphores;
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int lvds_channel_mode;
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int panel_use_ssc;
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int vbt_sdvo_panel_type;
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int enable_rc6;
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int enable_dc;
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int enable_fbc;
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int enable_ppgtt;
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int enable_execlists;
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int enable_psr;
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unsigned int preliminary_hw_support;
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int disable_power_well;
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int enable_ips;
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int invert_brightness;
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int enable_cmd_parser;
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int guc_log_level;
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int use_mmio_flip;
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int mmio_debug;
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int edp_vswing;
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unsigned int inject_load_failure;
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/* leave bools at the end to not create holes */
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bool enable_hangcheck;
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bool fastboot;
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bool prefault_disable;
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bool load_detect_test;
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bool reset;
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bool disable_display;
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bool enable_guc_submission;
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bool verbose_state_checks;
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bool nuclear_pageflip;
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bool enable_dp_mst;
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bool enable_dpcd_backlight;
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};
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extern struct i915_params i915 __read_mostly;
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#endif
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