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 <linux/module.h> |
26 | #include <linux/moduleparam.h> |
27 | #include "i915_drv.h" |
28 | |
29 | struct i915_params i915 __read_mostly = { |
30 | .modeset = -1, |
31 | .panel_ignore_lid = 1, |
32 | .powersave = 1, |
33 | .semaphores = -1, |
34 | .lvds_downclock = 0, |
35 | .lvds_channel_mode = 0, |
36 | .panel_use_ssc = -1, |
37 | .vbt_sdvo_panel_type = -1, |
38 | .enable_rc6 = -1, |
39 | .enable_fbc = -1, |
40 | .enable_hangcheck = true, |
41 | .enable_ppgtt = -1, |
42 | .enable_psr = 0, |
43 | .preliminary_hw_support = IS_ENABLED(CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT), |
44 | .disable_power_well = 1, |
45 | .enable_ips = 1, |
46 | .fastboot = 0, |
47 | .prefault_disable = 0, |
48 | .reset = true, |
49 | .invert_brightness = 0, |
50 | .disable_display = 0, |
51 | .enable_cmd_parser = 0, |
52 | }; |
53 | |
54 | module_param_named(modeset, i915.modeset, int, 0400); |
55 | MODULE_PARM_DESC(modeset, |
56 | "Use kernel modesetting [KMS] (0=DRM_I915_KMS from .config, " |
57 | "1=on, -1=force vga console preference [default])" ); |
58 | |
59 | module_param_named(panel_ignore_lid, i915.panel_ignore_lid, int, 0600); |
60 | MODULE_PARM_DESC(panel_ignore_lid, |
61 | "Override lid status (0=autodetect, 1=autodetect disabled [default], " |
62 | "-1=force lid closed, -2=force lid open)" ); |
63 | |
64 | module_param_named(powersave, i915.powersave, int, 0600); |
65 | MODULE_PARM_DESC(powersave, |
66 | "Enable powersavings, fbc, downclocking, etc. (default: true)" ); |
67 | |
68 | module_param_named(semaphores, i915.semaphores, int, 0400); |
69 | MODULE_PARM_DESC(semaphores, |
70 | "Use semaphores for inter-ring sync " |
71 | "(default: -1 (use per-chip defaults))" ); |
72 | |
73 | module_param_named(enable_rc6, i915.enable_rc6, int, 0400); |
74 | MODULE_PARM_DESC(enable_rc6, |
75 | "Enable power-saving render C-state 6. " |
76 | "Different stages can be selected via bitmask values " |
77 | "(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). " |
78 | "For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. " |
79 | "default: -1 (use per-chip default)" ); |
80 | |
81 | module_param_named(enable_fbc, i915.enable_fbc, int, 0600); |
82 | MODULE_PARM_DESC(enable_fbc, |
83 | "Enable frame buffer compression for power savings " |
84 | "(default: -1 (use per-chip default))" ); |
85 | |
86 | module_param_named(lvds_downclock, i915.lvds_downclock, int, 0400); |
87 | MODULE_PARM_DESC(lvds_downclock, |
88 | "Use panel (LVDS/eDP) downclocking for power savings " |
89 | "(default: false)" ); |
90 | |
91 | module_param_named(lvds_channel_mode, i915.lvds_channel_mode, int, 0600); |
92 | MODULE_PARM_DESC(lvds_channel_mode, |
93 | "Specify LVDS channel mode " |
94 | "(0=probe BIOS [default], 1=single-channel, 2=dual-channel)" ); |
95 | |
96 | module_param_named(lvds_use_ssc, i915.panel_use_ssc, int, 0600); |
97 | MODULE_PARM_DESC(lvds_use_ssc, |
98 | "Use Spread Spectrum Clock with panels [LVDS/eDP] " |
99 | "(default: auto from VBT)" ); |
100 | |
101 | module_param_named(vbt_sdvo_panel_type, i915.vbt_sdvo_panel_type, int, 0600); |
102 | MODULE_PARM_DESC(vbt_sdvo_panel_type, |
103 | "Override/Ignore selection of SDVO panel mode in the VBT " |
104 | "(-2=ignore, -1=auto [default], index in VBT BIOS table)" ); |
105 | |
106 | module_param_named(reset, i915.reset, bool, 0600); |
107 | MODULE_PARM_DESC(reset, "Attempt GPU resets (default: true)" ); |
108 | |
109 | module_param_named(enable_hangcheck, i915.enable_hangcheck, bool, 0644); |
110 | MODULE_PARM_DESC(enable_hangcheck, |
111 | "Periodically check GPU activity for detecting hangs. " |
112 | "WARNING: Disabling this can cause system wide hangs. " |
113 | "(default: true)" ); |
114 | |
115 | module_param_named(enable_ppgtt, i915.enable_ppgtt, int, 0400); |
116 | MODULE_PARM_DESC(enable_ppgtt, |
117 | "Override PPGTT usage. " |
118 | "(-1=auto [default], 0=disabled, 1=aliasing, 2=full)" ); |
119 | |
120 | module_param_named(enable_psr, i915.enable_psr, int, 0600); |
121 | MODULE_PARM_DESC(enable_psr, "Enable PSR (default: false)" ); |
122 | |
123 | module_param_named(preliminary_hw_support, i915.preliminary_hw_support, int, 0600); |
124 | MODULE_PARM_DESC(preliminary_hw_support, |
125 | "Enable preliminary hardware support." ); |
126 | |
127 | module_param_named(disable_power_well, i915.disable_power_well, int, 0600); |
128 | MODULE_PARM_DESC(disable_power_well, |
129 | "Disable the power well when possible (default: true)" ); |
130 | |
131 | module_param_named(enable_ips, i915.enable_ips, int, 0600); |
132 | MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)" ); |
133 | |
134 | module_param_named(fastboot, i915.fastboot, bool, 0600); |
135 | MODULE_PARM_DESC(fastboot, |
136 | "Try to skip unnecessary mode sets at boot time (default: false)" ); |
137 | |
138 | module_param_named(prefault_disable, i915.prefault_disable, bool, 0600); |
139 | MODULE_PARM_DESC(prefault_disable, |
140 | "Disable page prefaulting for pread/pwrite/reloc (default:false). " |
141 | "For developers only." ); |
142 | |
143 | module_param_named(invert_brightness, i915.invert_brightness, int, 0600); |
144 | MODULE_PARM_DESC(invert_brightness, |
145 | "Invert backlight brightness " |
146 | "(-1 force normal, 0 machine defaults, 1 force inversion), please " |
147 | "report PCI device ID, subsystem vendor and subsystem device ID " |
148 | "to dri-devel@lists.freedesktop.org, if your machine needs it. " |
149 | "It will then be included in an upcoming module version." ); |
150 | |
151 | module_param_named(disable_display, i915.disable_display, bool, 0600); |
152 | MODULE_PARM_DESC(disable_display, "Disable display (default: false)" ); |
153 | |
154 | module_param_named(enable_cmd_parser, i915.enable_cmd_parser, int, 0600); |
155 | MODULE_PARM_DESC(enable_cmd_parser, |
156 | "Enable command parsing (1=enabled, 0=disabled [default])" ); |
157 | |