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d330a953 JN |
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, | |
d330a953 JN |
30 | .semaphores = -1, |
31 | .lvds_downclock = 0, | |
32 | .lvds_channel_mode = 0, | |
33 | .panel_use_ssc = -1, | |
34 | .vbt_sdvo_panel_type = -1, | |
35 | .enable_rc6 = -1, | |
36 | .enable_fbc = -1, | |
27401d12 | 37 | .enable_execlists = -1, |
d330a953 JN |
38 | .enable_hangcheck = true, |
39 | .enable_ppgtt = -1, | |
27d438c5 | 40 | .enable_psr = 0, |
d330a953 JN |
41 | .preliminary_hw_support = IS_ENABLED(CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT), |
42 | .disable_power_well = 1, | |
43 | .enable_ips = 1, | |
44 | .fastboot = 0, | |
d330a953 | 45 | .prefault_disable = 0, |
5bedeb2d | 46 | .load_detect_test = 0, |
d330a953 JN |
47 | .reset = true, |
48 | .invert_brightness = 0, | |
a0bae57f | 49 | .disable_display = 0, |
5c411bb1 | 50 | .enable_cmd_parser = 1, |
7a10dfa6 | 51 | .disable_vtd_wa = 0, |
84c33a64 | 52 | .use_mmio_flip = 0, |
5978118c | 53 | .mmio_debug = 0, |
e2c719b7 | 54 | .verbose_state_checks = 1, |
b2e7723b | 55 | .nuclear_pageflip = 0, |
9e458034 | 56 | .edp_vswing = 0, |
d330a953 JN |
57 | }; |
58 | ||
59 | module_param_named(modeset, i915.modeset, int, 0400); | |
60 | MODULE_PARM_DESC(modeset, | |
61 | "Use kernel modesetting [KMS] (0=DRM_I915_KMS from .config, " | |
62 | "1=on, -1=force vga console preference [default])"); | |
63 | ||
64 | module_param_named(panel_ignore_lid, i915.panel_ignore_lid, int, 0600); | |
65 | MODULE_PARM_DESC(panel_ignore_lid, | |
66 | "Override lid status (0=autodetect, 1=autodetect disabled [default], " | |
67 | "-1=force lid closed, -2=force lid open)"); | |
68 | ||
fc9740ce | 69 | module_param_named_unsafe(semaphores, i915.semaphores, int, 0400); |
d330a953 JN |
70 | MODULE_PARM_DESC(semaphores, |
71 | "Use semaphores for inter-ring sync " | |
72 | "(default: -1 (use per-chip defaults))"); | |
73 | ||
fc9740ce | 74 | module_param_named_unsafe(enable_rc6, i915.enable_rc6, int, 0400); |
3adee7a7 | 75 | MODULE_PARM_DESC(enable_rc6, |
d330a953 JN |
76 | "Enable power-saving render C-state 6. " |
77 | "Different stages can be selected via bitmask values " | |
78 | "(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). " | |
79 | "For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. " | |
80 | "default: -1 (use per-chip default)"); | |
81 | ||
fc9740ce | 82 | module_param_named_unsafe(enable_fbc, i915.enable_fbc, int, 0600); |
3adee7a7 | 83 | MODULE_PARM_DESC(enable_fbc, |
d330a953 JN |
84 | "Enable frame buffer compression for power savings " |
85 | "(default: -1 (use per-chip default))"); | |
86 | ||
87 | module_param_named(lvds_downclock, i915.lvds_downclock, int, 0400); | |
88 | MODULE_PARM_DESC(lvds_downclock, | |
89 | "Use panel (LVDS/eDP) downclocking for power savings " | |
90 | "(default: false)"); | |
91 | ||
92 | module_param_named(lvds_channel_mode, i915.lvds_channel_mode, int, 0600); | |
93 | MODULE_PARM_DESC(lvds_channel_mode, | |
94 | "Specify LVDS channel mode " | |
95 | "(0=probe BIOS [default], 1=single-channel, 2=dual-channel)"); | |
96 | ||
97 | module_param_named(lvds_use_ssc, i915.panel_use_ssc, int, 0600); | |
98 | MODULE_PARM_DESC(lvds_use_ssc, | |
99 | "Use Spread Spectrum Clock with panels [LVDS/eDP] " | |
100 | "(default: auto from VBT)"); | |
101 | ||
102 | module_param_named(vbt_sdvo_panel_type, i915.vbt_sdvo_panel_type, int, 0600); | |
103 | MODULE_PARM_DESC(vbt_sdvo_panel_type, | |
104 | "Override/Ignore selection of SDVO panel mode in the VBT " | |
105 | "(-2=ignore, -1=auto [default], index in VBT BIOS table)"); | |
106 | ||
107 | module_param_named(reset, i915.reset, bool, 0600); | |
108 | MODULE_PARM_DESC(reset, "Attempt GPU resets (default: true)"); | |
109 | ||
110 | module_param_named(enable_hangcheck, i915.enable_hangcheck, bool, 0644); | |
111 | MODULE_PARM_DESC(enable_hangcheck, | |
112 | "Periodically check GPU activity for detecting hangs. " | |
113 | "WARNING: Disabling this can cause system wide hangs. " | |
114 | "(default: true)"); | |
115 | ||
fc9740ce | 116 | module_param_named_unsafe(enable_ppgtt, i915.enable_ppgtt, int, 0400); |
3adee7a7 | 117 | MODULE_PARM_DESC(enable_ppgtt, |
d330a953 JN |
118 | "Override PPGTT usage. " |
119 | "(-1=auto [default], 0=disabled, 1=aliasing, 2=full)"); | |
120 | ||
127f1003 OM |
121 | module_param_named(enable_execlists, i915.enable_execlists, int, 0400); |
122 | MODULE_PARM_DESC(enable_execlists, | |
123 | "Override execlists usage. " | |
27401d12 | 124 | "(-1=auto [default], 0=disabled, 1=enabled)"); |
127f1003 | 125 | |
d330a953 | 126 | module_param_named(enable_psr, i915.enable_psr, int, 0600); |
27d438c5 | 127 | MODULE_PARM_DESC(enable_psr, "Enable PSR (default: false)"); |
d330a953 JN |
128 | |
129 | module_param_named(preliminary_hw_support, i915.preliminary_hw_support, int, 0600); | |
130 | MODULE_PARM_DESC(preliminary_hw_support, | |
131 | "Enable preliminary hardware support."); | |
132 | ||
133 | module_param_named(disable_power_well, i915.disable_power_well, int, 0600); | |
134 | MODULE_PARM_DESC(disable_power_well, | |
135 | "Disable the power well when possible (default: true)"); | |
136 | ||
137 | module_param_named(enable_ips, i915.enable_ips, int, 0600); | |
138 | MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)"); | |
139 | ||
140 | module_param_named(fastboot, i915.fastboot, bool, 0600); | |
141 | MODULE_PARM_DESC(fastboot, | |
142 | "Try to skip unnecessary mode sets at boot time (default: false)"); | |
143 | ||
5bedeb2d | 144 | module_param_named_unsafe(prefault_disable, i915.prefault_disable, bool, 0600); |
d330a953 JN |
145 | MODULE_PARM_DESC(prefault_disable, |
146 | "Disable page prefaulting for pread/pwrite/reloc (default:false). " | |
147 | "For developers only."); | |
148 | ||
5bedeb2d DV |
149 | module_param_named_unsafe(load_detect_test, i915.load_detect_test, bool, 0600); |
150 | MODULE_PARM_DESC(load_detect_test, | |
151 | "Force-enable the VGA load detect code for testing (default:false). " | |
152 | "For developers only."); | |
153 | ||
d330a953 JN |
154 | module_param_named(invert_brightness, i915.invert_brightness, int, 0600); |
155 | MODULE_PARM_DESC(invert_brightness, | |
156 | "Invert backlight brightness " | |
157 | "(-1 force normal, 0 machine defaults, 1 force inversion), please " | |
158 | "report PCI device ID, subsystem vendor and subsystem device ID " | |
159 | "to dri-devel@lists.freedesktop.org, if your machine needs it. " | |
160 | "It will then be included in an upcoming module version."); | |
a0bae57f DL |
161 | |
162 | module_param_named(disable_display, i915.disable_display, bool, 0600); | |
163 | MODULE_PARM_DESC(disable_display, "Disable display (default: false)"); | |
351e3db2 | 164 | |
7a10dfa6 DV |
165 | module_param_named(disable_vtd_wa, i915.disable_vtd_wa, bool, 0600); |
166 | MODULE_PARM_DESC(disable_vtd_wa, "Disable all VT-d workarounds (default: false)"); | |
167 | ||
351e3db2 BV |
168 | module_param_named(enable_cmd_parser, i915.enable_cmd_parser, int, 0600); |
169 | MODULE_PARM_DESC(enable_cmd_parser, | |
5c411bb1 | 170 | "Enable command parsing (1=enabled [default], 0=disabled)"); |
84c33a64 SG |
171 | |
172 | module_param_named(use_mmio_flip, i915.use_mmio_flip, int, 0600); | |
173 | MODULE_PARM_DESC(use_mmio_flip, | |
174 | "use MMIO flips (-1=never, 0=driver discretion [default], 1=always)"); | |
5978118c | 175 | |
48572edd | 176 | module_param_named(mmio_debug, i915.mmio_debug, int, 0600); |
5978118c | 177 | MODULE_PARM_DESC(mmio_debug, |
48572edd CW |
178 | "Enable the MMIO debug code for the first N failures (default: off). " |
179 | "This may negatively affect performance."); | |
e2c719b7 RC |
180 | |
181 | module_param_named(verbose_state_checks, i915.verbose_state_checks, bool, 0600); | |
182 | MODULE_PARM_DESC(verbose_state_checks, | |
183 | "Enable verbose logs (ie. WARN_ON()) in case of unexpected hw state conditions."); | |
b2e7723b MR |
184 | |
185 | module_param_named_unsafe(nuclear_pageflip, i915.nuclear_pageflip, bool, 0600); | |
186 | MODULE_PARM_DESC(nuclear_pageflip, | |
187 | "Force atomic modeset functionality; only planes work for now (default: false)."); | |
9e458034 SJ |
188 | |
189 | /* WA to get away with the default setting in VBT for early platforms.Will be removed */ | |
190 | module_param_named_unsafe(edp_vswing, i915.edp_vswing, int, 0400); | |
191 | MODULE_PARM_DESC(edp_vswing, | |
192 | "Ignore/Override vswing pre-emph table selection from VBT " | |
193 | "(0=use value from vbt [default], 1=low power swing(200mV)," | |
194 | "2=default swing(400mV))"); |