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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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9e45803465
This provides an option to override the value set by VBT for selecting edp Vswing Pre-emph setting table. v2: Adding comment about this being a temporary workaround and making the parameter read-only (Jani) v3: Changing mode to 0400 instead of 0 (Jani) https://bugs.freedesktop.org/show_bug.cgi?id=89554 Signed-off-by: Sonika Jindal <sonika.jindal@intel.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
195 lines
7.6 KiB
C
195 lines
7.6 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_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_downclock = 0,
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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_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 = 0,
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.preliminary_hw_support = IS_ENABLED(CONFIG_DRM_I915_PRELIMINARY_HW_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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.reset = true,
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.invert_brightness = 0,
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.disable_display = 0,
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.enable_cmd_parser = 1,
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.disable_vtd_wa = 0,
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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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};
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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=DRM_I915_KMS from .config, "
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"1=on, -1=force vga console preference [default])");
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module_param_named(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_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(lvds_downclock, i915.lvds_downclock, int, 0400);
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MODULE_PARM_DESC(lvds_downclock,
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"Use panel (LVDS/eDP) downclocking for power savings "
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"(default: false)");
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module_param_named(lvds_channel_mode, i915.lvds_channel_mode, int, 0600);
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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(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(vbt_sdvo_panel_type, i915.vbt_sdvo_panel_type, int, 0600);
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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(reset, i915.reset, bool, 0600);
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MODULE_PARM_DESC(reset, "Attempt GPU resets (default: true)");
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module_param_named(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)");
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module_param_named(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(enable_psr, i915.enable_psr, int, 0600);
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MODULE_PARM_DESC(enable_psr, "Enable PSR (default: false)");
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module_param_named(preliminary_hw_support, i915.preliminary_hw_support, int, 0600);
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MODULE_PARM_DESC(preliminary_hw_support,
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"Enable preliminary hardware support.");
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module_param_named(disable_power_well, i915.disable_power_well, int, 0600);
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MODULE_PARM_DESC(disable_power_well,
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"Disable the power well when possible (default: true)");
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module_param_named(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(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, 0600);
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MODULE_PARM_DESC(disable_display, "Disable display (default: false)");
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module_param_named(disable_vtd_wa, i915.disable_vtd_wa, bool, 0600);
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MODULE_PARM_DESC(disable_vtd_wa, "Disable all VT-d workarounds (default: false)");
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module_param_named(enable_cmd_parser, i915.enable_cmd_parser, int, 0600);
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MODULE_PARM_DESC(enable_cmd_parser,
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"Enable command parsing (1=enabled [default], 0=disabled)");
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module_param_named(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, 0600);
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MODULE_PARM_DESC(nuclear_pageflip,
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"Force atomic modeset functionality; only planes work for now (default: false).");
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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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