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Jani Nikulad330a952014-01-21 11:24:25 +02001/*
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
27struct 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,
Damien Lespiaufd639ac2014-08-15 16:48:36 +010038 .enable_execlists = 0,
Jani Nikulad330a952014-01-21 11:24:25 +020039 .enable_hangcheck = true,
40 .enable_ppgtt = -1,
Linus Torvalds27d438c2014-08-08 11:48:26 -100041 .enable_psr = 0,
Jani Nikulad330a952014-01-21 11:24:25 +020042 .preliminary_hw_support = IS_ENABLED(CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT),
43 .disable_power_well = 1,
44 .enable_ips = 1,
45 .fastboot = 0,
Jani Nikulad330a952014-01-21 11:24:25 +020046 .prefault_disable = 0,
47 .reset = true,
48 .invert_brightness = 0,
Damien Lespiaua0bae572014-02-10 17:20:55 +000049 .disable_display = 0,
Brad Volkin5c411bb2014-02-18 10:15:57 -080050 .enable_cmd_parser = 1,
Daniel Vetter7a10dfa2014-04-01 09:33:47 +020051 .disable_vtd_wa = 0,
Sourab Gupta84c33a62014-06-02 16:47:17 +053052 .use_mmio_flip = 0,
Paulo Zanoni59781182014-07-16 17:49:29 -030053 .mmio_debug = 0,
Jani Nikulad330a952014-01-21 11:24:25 +020054};
55
56module_param_named(modeset, i915.modeset, int, 0400);
57MODULE_PARM_DESC(modeset,
58 "Use kernel modesetting [KMS] (0=DRM_I915_KMS from .config, "
59 "1=on, -1=force vga console preference [default])");
60
61module_param_named(panel_ignore_lid, i915.panel_ignore_lid, int, 0600);
62MODULE_PARM_DESC(panel_ignore_lid,
63 "Override lid status (0=autodetect, 1=autodetect disabled [default], "
64 "-1=force lid closed, -2=force lid open)");
65
66module_param_named(powersave, i915.powersave, int, 0600);
67MODULE_PARM_DESC(powersave,
68 "Enable powersavings, fbc, downclocking, etc. (default: true)");
69
Jani Nikulafc9740c2014-08-27 06:24:23 +093070module_param_named_unsafe(semaphores, i915.semaphores, int, 0400);
Jani Nikulad330a952014-01-21 11:24:25 +020071MODULE_PARM_DESC(semaphores,
72 "Use semaphores for inter-ring sync "
73 "(default: -1 (use per-chip defaults))");
74
Jani Nikulafc9740c2014-08-27 06:24:23 +093075module_param_named_unsafe(enable_rc6, i915.enable_rc6, int, 0400);
Jani Nikula3adee7a2014-01-27 15:26:38 +020076MODULE_PARM_DESC(enable_rc6,
Jani Nikulad330a952014-01-21 11:24:25 +020077 "Enable power-saving render C-state 6. "
78 "Different stages can be selected via bitmask values "
79 "(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). "
80 "For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. "
81 "default: -1 (use per-chip default)");
82
Jani Nikulafc9740c2014-08-27 06:24:23 +093083module_param_named_unsafe(enable_fbc, i915.enable_fbc, int, 0600);
Jani Nikula3adee7a2014-01-27 15:26:38 +020084MODULE_PARM_DESC(enable_fbc,
Jani Nikulad330a952014-01-21 11:24:25 +020085 "Enable frame buffer compression for power savings "
86 "(default: -1 (use per-chip default))");
87
88module_param_named(lvds_downclock, i915.lvds_downclock, int, 0400);
89MODULE_PARM_DESC(lvds_downclock,
90 "Use panel (LVDS/eDP) downclocking for power savings "
91 "(default: false)");
92
93module_param_named(lvds_channel_mode, i915.lvds_channel_mode, int, 0600);
94MODULE_PARM_DESC(lvds_channel_mode,
95 "Specify LVDS channel mode "
96 "(0=probe BIOS [default], 1=single-channel, 2=dual-channel)");
97
98module_param_named(lvds_use_ssc, i915.panel_use_ssc, int, 0600);
99MODULE_PARM_DESC(lvds_use_ssc,
100 "Use Spread Spectrum Clock with panels [LVDS/eDP] "
101 "(default: auto from VBT)");
102
103module_param_named(vbt_sdvo_panel_type, i915.vbt_sdvo_panel_type, int, 0600);
104MODULE_PARM_DESC(vbt_sdvo_panel_type,
105 "Override/Ignore selection of SDVO panel mode in the VBT "
106 "(-2=ignore, -1=auto [default], index in VBT BIOS table)");
107
108module_param_named(reset, i915.reset, bool, 0600);
109MODULE_PARM_DESC(reset, "Attempt GPU resets (default: true)");
110
111module_param_named(enable_hangcheck, i915.enable_hangcheck, bool, 0644);
112MODULE_PARM_DESC(enable_hangcheck,
113 "Periodically check GPU activity for detecting hangs. "
114 "WARNING: Disabling this can cause system wide hangs. "
115 "(default: true)");
116
Jani Nikulafc9740c2014-08-27 06:24:23 +0930117module_param_named_unsafe(enable_ppgtt, i915.enable_ppgtt, int, 0400);
Jani Nikula3adee7a2014-01-27 15:26:38 +0200118MODULE_PARM_DESC(enable_ppgtt,
Jani Nikulad330a952014-01-21 11:24:25 +0200119 "Override PPGTT usage. "
120 "(-1=auto [default], 0=disabled, 1=aliasing, 2=full)");
121
Oscar Mateo127f1002014-07-24 17:04:11 +0100122module_param_named(enable_execlists, i915.enable_execlists, int, 0400);
123MODULE_PARM_DESC(enable_execlists,
124 "Override execlists usage. "
Damien Lespiaufd639ac2014-08-15 16:48:36 +0100125 "(-1=auto, 0=disabled [default], 1=enabled)");
Oscar Mateo127f1002014-07-24 17:04:11 +0100126
Jani Nikulad330a952014-01-21 11:24:25 +0200127module_param_named(enable_psr, i915.enable_psr, int, 0600);
Linus Torvalds27d438c2014-08-08 11:48:26 -1000128MODULE_PARM_DESC(enable_psr, "Enable PSR (default: false)");
Jani Nikulad330a952014-01-21 11:24:25 +0200129
130module_param_named(preliminary_hw_support, i915.preliminary_hw_support, int, 0600);
131MODULE_PARM_DESC(preliminary_hw_support,
132 "Enable preliminary hardware support.");
133
134module_param_named(disable_power_well, i915.disable_power_well, int, 0600);
135MODULE_PARM_DESC(disable_power_well,
136 "Disable the power well when possible (default: true)");
137
138module_param_named(enable_ips, i915.enable_ips, int, 0600);
139MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)");
140
141module_param_named(fastboot, i915.fastboot, bool, 0600);
142MODULE_PARM_DESC(fastboot,
143 "Try to skip unnecessary mode sets at boot time (default: false)");
144
Jani Nikulad330a952014-01-21 11:24:25 +0200145module_param_named(prefault_disable, i915.prefault_disable, bool, 0600);
146MODULE_PARM_DESC(prefault_disable,
147 "Disable page prefaulting for pread/pwrite/reloc (default:false). "
148 "For developers only.");
149
150module_param_named(invert_brightness, i915.invert_brightness, int, 0600);
151MODULE_PARM_DESC(invert_brightness,
152 "Invert backlight brightness "
153 "(-1 force normal, 0 machine defaults, 1 force inversion), please "
154 "report PCI device ID, subsystem vendor and subsystem device ID "
155 "to dri-devel@lists.freedesktop.org, if your machine needs it. "
156 "It will then be included in an upcoming module version.");
Damien Lespiaua0bae572014-02-10 17:20:55 +0000157
158module_param_named(disable_display, i915.disable_display, bool, 0600);
159MODULE_PARM_DESC(disable_display, "Disable display (default: false)");
Brad Volkin351e3db2014-02-18 10:15:46 -0800160
Daniel Vetter7a10dfa2014-04-01 09:33:47 +0200161module_param_named(disable_vtd_wa, i915.disable_vtd_wa, bool, 0600);
162MODULE_PARM_DESC(disable_vtd_wa, "Disable all VT-d workarounds (default: false)");
163
Brad Volkin351e3db2014-02-18 10:15:46 -0800164module_param_named(enable_cmd_parser, i915.enable_cmd_parser, int, 0600);
165MODULE_PARM_DESC(enable_cmd_parser,
Brad Volkin5c411bb2014-02-18 10:15:57 -0800166 "Enable command parsing (1=enabled [default], 0=disabled)");
Sourab Gupta84c33a62014-06-02 16:47:17 +0530167
168module_param_named(use_mmio_flip, i915.use_mmio_flip, int, 0600);
169MODULE_PARM_DESC(use_mmio_flip,
170 "use MMIO flips (-1=never, 0=driver discretion [default], 1=always)");
Paulo Zanoni59781182014-07-16 17:49:29 -0300171
172module_param_named(mmio_debug, i915.mmio_debug, bool, 0600);
173MODULE_PARM_DESC(mmio_debug,
174 "Enable the MMIO debug code (default: false). This may negatively "
175 "affect performance.");