2 * Copyright © 2015 Intel Corporation
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5 * copy of this software and associated documentation files (the "Software"),
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7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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25 #ifndef _I915_PARAMS_H_
26 #define _I915_PARAMS_H_
28 #include <linux/bitops.h>
29 #include <linux/cache.h> /* for __read_mostly */
33 #define ENABLE_GUC_SUBMISSION BIT(0)
34 #define ENABLE_GUC_LOAD_HUC BIT(1)
35 #define ENABLE_GUC_MASK GENMASK(1, 0)
38 * Invoke param, a function-like macro, for each i915 param, with arguments:
40 * param(type, name, value, mode)
42 * type: parameter type, one of {bool, int, unsigned int, unsigned long, char *}
43 * name: name of the parameter
44 * value: initial/default value of the parameter
45 * mode: debugfs file permissions, one of {0400, 0600, 0}, use 0 to not create
48 #define I915_PARAMS_FOR_EACH(param) \
49 param(char *, vbt_firmware, NULL, 0400) \
50 param(int, modeset, -1, 0400) \
51 param(int, lvds_channel_mode, 0, 0400) \
52 param(int, panel_use_ssc, -1, 0600) \
53 param(int, vbt_sdvo_panel_type, -1, 0400) \
54 param(int, enable_dc, -1, 0400) \
55 param(int, enable_fbc, -1, 0600) \
56 param(int, enable_psr, -1, 0600) \
57 param(bool, psr_safest_params, false, 0600) \
58 param(bool, enable_psr2_sel_fetch, false, 0600) \
59 param(int, disable_power_well, -1, 0400) \
60 param(int, enable_ips, 1, 0600) \
61 param(int, invert_brightness, 0, 0600) \
62 param(int, enable_guc, 0, 0400) \
63 param(int, guc_log_level, -1, 0400) \
64 param(char *, guc_firmware_path, NULL, 0400) \
65 param(char *, huc_firmware_path, NULL, 0400) \
66 param(char *, dmc_firmware_path, NULL, 0400) \
67 param(int, mmio_debug, -IS_ENABLED(CONFIG_DRM_I915_DEBUG_MMIO), 0600) \
68 param(int, edp_vswing, 0, 0400) \
69 param(unsigned int, reset, 3, 0600) \
70 param(unsigned int, inject_probe_failure, 0, 0) \
71 param(int, fastboot, -1, 0600) \
72 param(int, enable_dpcd_backlight, -1, 0600) \
73 param(char *, force_probe, CONFIG_DRM_I915_FORCE_PROBE, 0400) \
74 param(unsigned long, fake_lmem_start, 0, 0400) \
75 /* leave bools at the end to not create holes */ \
76 param(bool, enable_hangcheck, true, 0600) \
77 param(bool, load_detect_test, false, 0600) \
78 param(bool, force_reset_modeset_test, false, 0600) \
79 param(bool, error_capture, true, 0600) \
80 param(bool, disable_display, false, 0400) \
81 param(bool, verbose_state_checks, true, 0) \
82 param(bool, nuclear_pageflip, false, 0400) \
83 param(bool, enable_dp_mst, true, 0600) \
84 param(bool, enable_gvt, false, 0400)
86 #define MEMBER(T, member, ...) T member;
88 I915_PARAMS_FOR_EACH(MEMBER);
92 extern struct i915_params i915_modparams __read_mostly;
94 void i915_params_dump(const struct i915_params *params, struct drm_printer *p);
95 void i915_params_copy(struct i915_params *dest, const struct i915_params *src);
96 void i915_params_free(struct i915_params *params);