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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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ae25eceab6
This patch adds option to enable dynamic backlight for eDP panel that supports this feature via DPCD register and set minimum / maximum brightness to 0% and 100% of the normal brightness. Signed-off-by: Puthikorn Voravootivat <puthik@chromium.org> Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20170622190339.142671-4-puthik@chromium.org
262 lines
11 KiB
C
262 lines
11 KiB
C
/*
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* Copyright © 2014 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
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the 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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#include "i915_params.h"
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#include "i915_drv.h"
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struct i915_params i915 __read_mostly = {
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.modeset = -1,
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.panel_ignore_lid = 1,
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.semaphores = -1,
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.lvds_channel_mode = 0,
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.panel_use_ssc = -1,
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.vbt_sdvo_panel_type = -1,
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.enable_rc6 = -1,
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.enable_dc = -1,
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.enable_fbc = -1,
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.enable_execlists = -1,
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.enable_hangcheck = true,
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.enable_ppgtt = -1,
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.enable_psr = -1,
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.alpha_support = IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT),
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.disable_power_well = -1,
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.enable_ips = 1,
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.fastboot = 0,
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.prefault_disable = 0,
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.load_detect_test = 0,
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.force_reset_modeset_test = 0,
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.reset = 2,
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.error_capture = true,
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.invert_brightness = 0,
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.disable_display = 0,
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.enable_cmd_parser = true,
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.use_mmio_flip = 0,
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.mmio_debug = 0,
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.verbose_state_checks = 1,
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.nuclear_pageflip = 0,
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.edp_vswing = 0,
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.enable_guc_loading = 0,
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.enable_guc_submission = 0,
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.guc_log_level = -1,
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.guc_firmware_path = NULL,
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.huc_firmware_path = NULL,
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.enable_dp_mst = true,
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.inject_load_failure = 0,
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.enable_dpcd_backlight = -1,
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.enable_gvt = false,
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.enable_dbc = true,
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};
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module_param_named(modeset, i915.modeset, int, 0400);
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MODULE_PARM_DESC(modeset,
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"Use kernel modesetting [KMS] (0=disable, "
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"1=on, -1=force vga console preference [default])");
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module_param_named_unsafe(panel_ignore_lid, i915.panel_ignore_lid, int, 0600);
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MODULE_PARM_DESC(panel_ignore_lid,
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"Override lid status (0=autodetect, 1=autodetect disabled [default], "
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"-1=force lid closed, -2=force lid open)");
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module_param_named_unsafe(semaphores, i915.semaphores, int, 0400);
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MODULE_PARM_DESC(semaphores,
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"Use semaphores for inter-ring sync "
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"(default: -1 (use per-chip defaults))");
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module_param_named_unsafe(enable_rc6, i915.enable_rc6, int, 0400);
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MODULE_PARM_DESC(enable_rc6,
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"Enable power-saving render C-state 6. "
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"Different stages can be selected via bitmask values "
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"(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). "
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"For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. "
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"default: -1 (use per-chip default)");
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module_param_named_unsafe(enable_dc, i915.enable_dc, int, 0400);
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MODULE_PARM_DESC(enable_dc,
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"Enable power-saving display C-states. "
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"(-1=auto [default]; 0=disable; 1=up to DC5; 2=up to DC6)");
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module_param_named_unsafe(enable_fbc, i915.enable_fbc, int, 0600);
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MODULE_PARM_DESC(enable_fbc,
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"Enable frame buffer compression for power savings "
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"(default: -1 (use per-chip default))");
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module_param_named_unsafe(lvds_channel_mode, i915.lvds_channel_mode, int, 0400);
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MODULE_PARM_DESC(lvds_channel_mode,
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"Specify LVDS channel mode "
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"(0=probe BIOS [default], 1=single-channel, 2=dual-channel)");
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module_param_named_unsafe(lvds_use_ssc, i915.panel_use_ssc, int, 0600);
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MODULE_PARM_DESC(lvds_use_ssc,
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"Use Spread Spectrum Clock with panels [LVDS/eDP] "
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"(default: auto from VBT)");
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module_param_named_unsafe(vbt_sdvo_panel_type, i915.vbt_sdvo_panel_type, int, 0400);
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MODULE_PARM_DESC(vbt_sdvo_panel_type,
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"Override/Ignore selection of SDVO panel mode in the VBT "
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"(-2=ignore, -1=auto [default], index in VBT BIOS table)");
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module_param_named_unsafe(reset, i915.reset, int, 0600);
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MODULE_PARM_DESC(reset, "Attempt GPU resets (0=disabled, 1=full gpu reset, 2=engine reset [default])");
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#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
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module_param_named(error_capture, i915.error_capture, bool, 0600);
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MODULE_PARM_DESC(error_capture,
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"Record the GPU state following a hang. "
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"This information in /sys/class/drm/card<N>/error is vital for "
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"triaging and debugging hangs.");
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#endif
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module_param_named_unsafe(enable_hangcheck, i915.enable_hangcheck, bool, 0644);
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MODULE_PARM_DESC(enable_hangcheck,
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"Periodically check GPU activity for detecting hangs. "
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"WARNING: Disabling this can cause system wide hangs. "
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"(default: true)");
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module_param_named_unsafe(enable_ppgtt, i915.enable_ppgtt, int, 0400);
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MODULE_PARM_DESC(enable_ppgtt,
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"Override PPGTT usage. "
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"(-1=auto [default], 0=disabled, 1=aliasing, 2=full, 3=full with extended address space)");
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module_param_named_unsafe(enable_execlists, i915.enable_execlists, int, 0400);
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MODULE_PARM_DESC(enable_execlists,
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"Override execlists usage. "
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"(-1=auto [default], 0=disabled, 1=enabled)");
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module_param_named_unsafe(enable_psr, i915.enable_psr, int, 0600);
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MODULE_PARM_DESC(enable_psr, "Enable PSR "
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"(0=disabled, 1=enabled - link mode chosen per-platform, 2=force link-standby mode, 3=force link-off mode) "
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"Default: -1 (use per-chip default)");
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module_param_named_unsafe(alpha_support, i915.alpha_support, bool, 0400);
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MODULE_PARM_DESC(alpha_support,
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"Enable alpha quality driver support for latest hardware. "
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"See also CONFIG_DRM_I915_ALPHA_SUPPORT.");
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module_param_named_unsafe(disable_power_well, i915.disable_power_well, int, 0400);
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MODULE_PARM_DESC(disable_power_well,
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"Disable display power wells when possible "
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"(-1=auto [default], 0=power wells always on, 1=power wells disabled when possible)");
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module_param_named_unsafe(enable_ips, i915.enable_ips, int, 0600);
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MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)");
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module_param_named(fastboot, i915.fastboot, bool, 0600);
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MODULE_PARM_DESC(fastboot,
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"Try to skip unnecessary mode sets at boot time (default: false)");
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module_param_named_unsafe(prefault_disable, i915.prefault_disable, bool, 0600);
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MODULE_PARM_DESC(prefault_disable,
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"Disable page prefaulting for pread/pwrite/reloc (default:false). "
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"For developers only.");
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module_param_named_unsafe(load_detect_test, i915.load_detect_test, bool, 0600);
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MODULE_PARM_DESC(load_detect_test,
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"Force-enable the VGA load detect code for testing (default:false). "
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"For developers only.");
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module_param_named_unsafe(force_reset_modeset_test, i915.force_reset_modeset_test, bool, 0600);
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MODULE_PARM_DESC(force_reset_modeset_test,
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"Force a modeset during gpu reset for testing (default:false). "
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"For developers only.");
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module_param_named_unsafe(invert_brightness, i915.invert_brightness, int, 0600);
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MODULE_PARM_DESC(invert_brightness,
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"Invert backlight brightness "
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"(-1 force normal, 0 machine defaults, 1 force inversion), please "
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"report PCI device ID, subsystem vendor and subsystem device ID "
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"to dri-devel@lists.freedesktop.org, if your machine needs it. "
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"It will then be included in an upcoming module version.");
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module_param_named(disable_display, i915.disable_display, bool, 0400);
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MODULE_PARM_DESC(disable_display, "Disable display (default: false)");
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module_param_named_unsafe(enable_cmd_parser, i915.enable_cmd_parser, bool, 0400);
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MODULE_PARM_DESC(enable_cmd_parser,
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"Enable command parsing (true=enabled [default], false=disabled)");
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module_param_named_unsafe(use_mmio_flip, i915.use_mmio_flip, int, 0600);
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MODULE_PARM_DESC(use_mmio_flip,
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"use MMIO flips (-1=never, 0=driver discretion [default], 1=always)");
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module_param_named(mmio_debug, i915.mmio_debug, int, 0600);
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MODULE_PARM_DESC(mmio_debug,
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"Enable the MMIO debug code for the first N failures (default: off). "
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"This may negatively affect performance.");
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module_param_named(verbose_state_checks, i915.verbose_state_checks, bool, 0600);
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MODULE_PARM_DESC(verbose_state_checks,
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"Enable verbose logs (ie. WARN_ON()) in case of unexpected hw state conditions.");
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module_param_named_unsafe(nuclear_pageflip, i915.nuclear_pageflip, bool, 0400);
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MODULE_PARM_DESC(nuclear_pageflip,
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"Force enable atomic functionality on platforms that don't have full support yet.");
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/* WA to get away with the default setting in VBT for early platforms.Will be removed */
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module_param_named_unsafe(edp_vswing, i915.edp_vswing, int, 0400);
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MODULE_PARM_DESC(edp_vswing,
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"Ignore/Override vswing pre-emph table selection from VBT "
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"(0=use value from vbt [default], 1=low power swing(200mV),"
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"2=default swing(400mV))");
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module_param_named_unsafe(enable_guc_loading, i915.enable_guc_loading, int, 0400);
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MODULE_PARM_DESC(enable_guc_loading,
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"Enable GuC firmware loading "
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"(-1=auto, 0=never [default], 1=if available, 2=required)");
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module_param_named_unsafe(enable_guc_submission, i915.enable_guc_submission, int, 0400);
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MODULE_PARM_DESC(enable_guc_submission,
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"Enable GuC submission "
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"(-1=auto, 0=never [default], 1=if available, 2=required)");
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module_param_named(guc_log_level, i915.guc_log_level, int, 0400);
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MODULE_PARM_DESC(guc_log_level,
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"GuC firmware logging level (-1:disabled (default), 0-3:enabled)");
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module_param_named_unsafe(guc_firmware_path, i915.guc_firmware_path, charp, 0400);
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MODULE_PARM_DESC(guc_firmware_path,
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"GuC firmware path to use instead of the default one");
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module_param_named_unsafe(huc_firmware_path, i915.huc_firmware_path, charp, 0400);
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MODULE_PARM_DESC(huc_firmware_path,
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"HuC firmware path to use instead of the default one");
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module_param_named_unsafe(enable_dp_mst, i915.enable_dp_mst, bool, 0600);
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MODULE_PARM_DESC(enable_dp_mst,
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"Enable multi-stream transport (MST) for new DisplayPort sinks. (default: true)");
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module_param_named_unsafe(inject_load_failure, i915.inject_load_failure, uint, 0400);
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MODULE_PARM_DESC(inject_load_failure,
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"Force an error after a number of failure check points (0:disabled (default), N:force failure at the Nth failure check point)");
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module_param_named_unsafe(enable_dpcd_backlight, i915.enable_dpcd_backlight, int, 0600);
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MODULE_PARM_DESC(enable_dpcd_backlight,
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"Enable support for DPCD backlight control "
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"(-1:auto (default), 0:force disable, 1:force enabled if supported");
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module_param_named(enable_gvt, i915.enable_gvt, bool, 0400);
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MODULE_PARM_DESC(enable_gvt,
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"Enable support for Intel GVT-g graphics virtualization host support(default:false)");
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module_param_named_unsafe(enable_dbc, i915.enable_dbc, bool, 0600);
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MODULE_PARM_DESC(enable_dbc,
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"Enable support for dynamic backlight control (default:true)");
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