[deliverable/linux.git] / drivers / gpu / drm / i915 / i915_params.c

/*
 * Copyright © 2014 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#include "i915_drv.h"

struct i915_params i915 __read_mostly = {
	.modeset = -1,
	.panel_ignore_lid = 1,
	.powersave = 1,
	.semaphores = -1,
	.lvds_downclock = 0,
	.lvds_channel_mode = 0,
	.panel_use_ssc = -1,
	.vbt_sdvo_panel_type = -1,
	.enable_rc6 = -1,
	.enable_fbc = -1,
	.enable_hangcheck = true,
	.enable_ppgtt = -1,
	.enable_psr = 0,
	.preliminary_hw_support = IS_ENABLED(CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT),
	.disable_power_well = 1,
	.enable_ips = 1,
	.fastboot = 0,
	.enable_pc8 = 1,
	.pc8_timeout = 5000,
	.prefault_disable = 0,
	.reset = true,
	.invert_brightness = 0,
};

module_param_named(modeset, i915.modeset, int, 0400);
MODULE_PARM_DESC(modeset,
	"Use kernel modesetting [KMS] (0=DRM_I915_KMS from .config, "
	"1=on, -1=force vga console preference [default])");

module_param_named(panel_ignore_lid, i915.panel_ignore_lid, int, 0600);
MODULE_PARM_DESC(panel_ignore_lid,
	"Override lid status (0=autodetect, 1=autodetect disabled [default], "
	"-1=force lid closed, -2=force lid open)");

module_param_named(powersave, i915.powersave, int, 0600);
MODULE_PARM_DESC(powersave,
	"Enable powersavings, fbc, downclocking, etc. (default: true)");

module_param_named(semaphores, i915.semaphores, int, 0400);
MODULE_PARM_DESC(semaphores,
	"Use semaphores for inter-ring sync "
	"(default: -1 (use per-chip defaults))");

module_param_named(i915_enable_rc6, i915.enable_rc6, int, 0400);
MODULE_PARM_DESC(i915_enable_rc6,
	"Enable power-saving render C-state 6. "
	"Different stages can be selected via bitmask values "
	"(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). "
	"For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. "
	"default: -1 (use per-chip default)");

module_param_named(i915_enable_fbc, i915.enable_fbc, int, 0600);
MODULE_PARM_DESC(i915_enable_fbc,
	"Enable frame buffer compression for power savings "
	"(default: -1 (use per-chip default))");

module_param_named(lvds_downclock, i915.lvds_downclock, int, 0400);
MODULE_PARM_DESC(lvds_downclock,
	"Use panel (LVDS/eDP) downclocking for power savings "
	"(default: false)");

module_param_named(lvds_channel_mode, i915.lvds_channel_mode, int, 0600);
MODULE_PARM_DESC(lvds_channel_mode,
	 "Specify LVDS channel mode "
	 "(0=probe BIOS [default], 1=single-channel, 2=dual-channel)");

module_param_named(lvds_use_ssc, i915.panel_use_ssc, int, 0600);
MODULE_PARM_DESC(lvds_use_ssc,
	"Use Spread Spectrum Clock with panels [LVDS/eDP] "
	"(default: auto from VBT)");

module_param_named(vbt_sdvo_panel_type, i915.vbt_sdvo_panel_type, int, 0600);
MODULE_PARM_DESC(vbt_sdvo_panel_type,
	"Override/Ignore selection of SDVO panel mode in the VBT "
	"(-2=ignore, -1=auto [default], index in VBT BIOS table)");

module_param_named(reset, i915.reset, bool, 0600);
MODULE_PARM_DESC(reset, "Attempt GPU resets (default: true)");

module_param_named(enable_hangcheck, i915.enable_hangcheck, bool, 0644);
MODULE_PARM_DESC(enable_hangcheck,
	"Periodically check GPU activity for detecting hangs. "
	"WARNING: Disabling this can cause system wide hangs. "
	"(default: true)");

module_param_named(i915_enable_ppgtt, i915.enable_ppgtt, int, 0400);
MODULE_PARM_DESC(i915_enable_ppgtt,
	"Override PPGTT usage. "
	"(-1=auto [default], 0=disabled, 1=aliasing, 2=full)");

module_param_named(enable_psr, i915.enable_psr, int, 0600);
MODULE_PARM_DESC(enable_psr, "Enable PSR (default: false)");

module_param_named(preliminary_hw_support, i915.preliminary_hw_support, int, 0600);
MODULE_PARM_DESC(preliminary_hw_support,
	"Enable preliminary hardware support.");

module_param_named(disable_power_well, i915.disable_power_well, int, 0600);
MODULE_PARM_DESC(disable_power_well,
	"Disable the power well when possible (default: true)");

module_param_named(enable_ips, i915.enable_ips, int, 0600);
MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)");

module_param_named(fastboot, i915.fastboot, bool, 0600);
MODULE_PARM_DESC(fastboot,
	"Try to skip unnecessary mode sets at boot time (default: false)");

module_param_named(enable_pc8, i915.enable_pc8, int, 0600);
MODULE_PARM_DESC(enable_pc8,
	"Enable support for low power package C states (PC8+) (default: true)");

module_param_named(pc8_timeout, i915.pc8_timeout, int, 0600);
MODULE_PARM_DESC(pc8_timeout,
	"Number of msecs of idleness required to enter PC8+ (default: 5000)");

module_param_named(prefault_disable, i915.prefault_disable, bool, 0600);
MODULE_PARM_DESC(prefault_disable,
	"Disable page prefaulting for pread/pwrite/reloc (default:false). "
	"For developers only.");

module_param_named(invert_brightness, i915.invert_brightness, int, 0600);
MODULE_PARM_DESC(invert_brightness,
	"Invert backlight brightness "
	"(-1 force normal, 0 machine defaults, 1 force inversion), please "
	"report PCI device ID, subsystem vendor and subsystem device ID "
	"to dri-devel@lists.freedesktop.org, if your machine needs it. "
	"It will then be included in an upcoming module version.");
Commit	Line	Data
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,
	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	.enable_pc8 = 1,
	46	.pc8_timeout = 5000,
	47	.prefault_disable = 0,
	48	.reset = true,
	49	.invert_brightness = 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(i915_enable_rc6, i915.enable_rc6, int, 0400);
72	MODULE_PARM_DESC(i915_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(i915_enable_fbc, i915.enable_fbc, int, 0600);
80	MODULE_PARM_DESC(i915_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(i915_enable_ppgtt, i915.enable_ppgtt, int, 0400);
114	MODULE_PARM_DESC(i915_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(enable_pc8, i915.enable_pc8, int, 0600);
137	MODULE_PARM_DESC(enable_pc8,
138	"Enable support for low power package C states (PC8+) (default: true)");
139
140	module_param_named(pc8_timeout, i915.pc8_timeout, int, 0600);
141	MODULE_PARM_DESC(pc8_timeout,
142	"Number of msecs of idleness required to enter PC8+ (default: 5000)");
143
144	module_param_named(prefault_disable, i915.prefault_disable, bool, 0600);
145	MODULE_PARM_DESC(prefault_disable,
146	"Disable page prefaulting for pread/pwrite/reloc (default:false). "
147	"For developers only.");
148
149	module_param_named(invert_brightness, i915.invert_brightness, int, 0600);
150	MODULE_PARM_DESC(invert_brightness,
151	"Invert backlight brightness "
152	"(-1 force normal, 0 machine defaults, 1 force inversion), please "
153	"report PCI device ID, subsystem vendor and subsystem device ID "
154	"to dri-devel@lists.freedesktop.org, if your machine needs it. "
155	"It will then be included in an upcoming module version.");