1 /* 2 * Copyright © 2014 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the 6 * "Software"), to deal in the Software without restriction, including 7 * without limitation the rights to use, copy, modify, merge, publish, 8 * distribute, sub license, and/or sell copies of the Software, and to 9 * permit persons to whom the Software is furnished to do so, subject to 10 * the following conditions: 11 * 12 * The above copyright notice and this permission notice (including the 13 * next paragraph) shall be included in all copies or substantial portions 14 * of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 22 * IN THE SOFTWARE. 23 */ 24 25 #include "i915_drv.h" 26 27 struct i915_params i915 __read_mostly = { 28 .modeset = -1, 29 .panel_ignore_lid = 1, 30 .powersave = 1, 31 .semaphores = -1, 32 .lvds_downclock = 0, 33 .lvds_channel_mode = 0, 34 .panel_use_ssc = -1, 35 .vbt_sdvo_panel_type = -1, 36 .enable_rc6 = -1, 37 .enable_fbc = -1, 38 .enable_hangcheck = true, 39 .enable_ppgtt = -1, 40 .enable_psr = 0, 41 .preliminary_hw_support = IS_ENABLED(CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT), 42 .disable_power_well = 1, 43 .enable_ips = 1, 44 .fastboot = 0, 45 .prefault_disable = 0, 46 .reset = true, 47 .invert_brightness = 0, 48 .disable_display = 0, 49 .enable_cmd_parser = 0, 50 }; 51 52 module_param_named(modeset, i915.modeset, int, 0400); 53 MODULE_PARM_DESC(modeset, 54 "Use kernel modesetting [KMS] (0=DRM_I915_KMS from .config, " 55 "1=on, -1=force vga console preference [default])"); 56 57 module_param_named(panel_ignore_lid, i915.panel_ignore_lid, int, 0600); 58 MODULE_PARM_DESC(panel_ignore_lid, 59 "Override lid status (0=autodetect, 1=autodetect disabled [default], " 60 "-1=force lid closed, -2=force lid open)"); 61 62 module_param_named(powersave, i915.powersave, int, 0600); 63 MODULE_PARM_DESC(powersave, 64 "Enable powersavings, fbc, downclocking, etc. (default: true)"); 65 66 module_param_named(semaphores, i915.semaphores, int, 0400); 67 MODULE_PARM_DESC(semaphores, 68 "Use semaphores for inter-ring sync " 69 "(default: -1 (use per-chip defaults))"); 70 71 module_param_named(enable_rc6, i915.enable_rc6, int, 0400); 72 MODULE_PARM_DESC(enable_rc6, 73 "Enable power-saving render C-state 6. " 74 "Different stages can be selected via bitmask values " 75 "(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). " 76 "For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. " 77 "default: -1 (use per-chip default)"); 78 79 module_param_named(enable_fbc, i915.enable_fbc, int, 0600); 80 MODULE_PARM_DESC(enable_fbc, 81 "Enable frame buffer compression for power savings " 82 "(default: -1 (use per-chip default))"); 83 84 module_param_named(lvds_downclock, i915.lvds_downclock, int, 0400); 85 MODULE_PARM_DESC(lvds_downclock, 86 "Use panel (LVDS/eDP) downclocking for power savings " 87 "(default: false)"); 88 89 module_param_named(lvds_channel_mode, i915.lvds_channel_mode, int, 0600); 90 MODULE_PARM_DESC(lvds_channel_mode, 91 "Specify LVDS channel mode " 92 "(0=probe BIOS [default], 1=single-channel, 2=dual-channel)"); 93 94 module_param_named(lvds_use_ssc, i915.panel_use_ssc, int, 0600); 95 MODULE_PARM_DESC(lvds_use_ssc, 96 "Use Spread Spectrum Clock with panels [LVDS/eDP] " 97 "(default: auto from VBT)"); 98 99 module_param_named(vbt_sdvo_panel_type, i915.vbt_sdvo_panel_type, int, 0600); 100 MODULE_PARM_DESC(vbt_sdvo_panel_type, 101 "Override/Ignore selection of SDVO panel mode in the VBT " 102 "(-2=ignore, -1=auto [default], index in VBT BIOS table)"); 103 104 module_param_named(reset, i915.reset, bool, 0600); 105 MODULE_PARM_DESC(reset, "Attempt GPU resets (default: true)"); 106 107 module_param_named(enable_hangcheck, i915.enable_hangcheck, bool, 0644); 108 MODULE_PARM_DESC(enable_hangcheck, 109 "Periodically check GPU activity for detecting hangs. " 110 "WARNING: Disabling this can cause system wide hangs. " 111 "(default: true)"); 112 113 module_param_named(enable_ppgtt, i915.enable_ppgtt, int, 0400); 114 MODULE_PARM_DESC(enable_ppgtt, 115 "Override PPGTT usage. " 116 "(-1=auto [default], 0=disabled, 1=aliasing, 2=full)"); 117 118 module_param_named(enable_psr, i915.enable_psr, int, 0600); 119 MODULE_PARM_DESC(enable_psr, "Enable PSR (default: false)"); 120 121 module_param_named(preliminary_hw_support, i915.preliminary_hw_support, int, 0600); 122 MODULE_PARM_DESC(preliminary_hw_support, 123 "Enable preliminary hardware support."); 124 125 module_param_named(disable_power_well, i915.disable_power_well, int, 0600); 126 MODULE_PARM_DESC(disable_power_well, 127 "Disable the power well when possible (default: true)"); 128 129 module_param_named(enable_ips, i915.enable_ips, int, 0600); 130 MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)"); 131 132 module_param_named(fastboot, i915.fastboot, bool, 0600); 133 MODULE_PARM_DESC(fastboot, 134 "Try to skip unnecessary mode sets at boot time (default: false)"); 135 136 module_param_named(prefault_disable, i915.prefault_disable, bool, 0600); 137 MODULE_PARM_DESC(prefault_disable, 138 "Disable page prefaulting for pread/pwrite/reloc (default:false). " 139 "For developers only."); 140 141 module_param_named(invert_brightness, i915.invert_brightness, int, 0600); 142 MODULE_PARM_DESC(invert_brightness, 143 "Invert backlight brightness " 144 "(-1 force normal, 0 machine defaults, 1 force inversion), please " 145 "report PCI device ID, subsystem vendor and subsystem device ID " 146 "to dri-devel@lists.freedesktop.org, if your machine needs it. " 147 "It will then be included in an upcoming module version."); 148 149 module_param_named(disable_display, i915.disable_display, bool, 0600); 150 MODULE_PARM_DESC(disable_display, "Disable display (default: false)"); 151 152 module_param_named(enable_cmd_parser, i915.enable_cmd_parser, int, 0600); 153 MODULE_PARM_DESC(enable_cmd_parser, 154 "Enable command parsing (1=enabled, 0=disabled [default])"); 155