drivers/gpu/drm/i915/i915_params.h

   1 /*
   2  * Copyright © 2015 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 "Software"),
   6  * to deal in the Software without restriction, including without limitation
   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:
  10  *
  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
  13  * Software.
  14  *
  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
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  */
  24
  25 #ifndef _I915_PARAMS_H_
  26 #define _I915_PARAMS_H_
  27
  28 #include <linux/bitops.h>
  29 #include <linux/cache.h> /* for __read_mostly */
  30
  31 struct drm_printer;
  32
  33 #define ENABLE_GUC_SUBMISSION           BIT(0)
  34 #define ENABLE_GUC_LOAD_HUC             BIT(1)
  35
  36 /*
  37  * Invoke param, a function-like macro, for each i915 param, with arguments:
  38  *
  39  * param(type, name, value, mode)
  40  *
  41  * type: parameter type, one of {bool, int, unsigned int, unsigned long, char *}
  42  * name: name of the parameter
  43  * value: initial/default value of the parameter
  44  * mode: debugfs file permissions, one of {0400, 0600, 0}, use 0 to not create
  45  *       debugfs file
  46  */
  47 #define I915_PARAMS_FOR_EACH(param) \
  48         param(char *, vbt_firmware, NULL, 0400) \
  49         param(int, modeset, -1, 0400) \
  50         param(int, lvds_channel_mode, 0, 0400) \
  51         param(int, panel_use_ssc, -1, 0600) \
  52         param(int, vbt_sdvo_panel_type, -1, 0400) \
  53         param(int, enable_dc, -1, 0400) \
  54         param(int, enable_fbc, -1, 0600) \
  55         param(int, enable_psr, -1, 0600) \
  56         param(bool, psr_safest_params, false, 0600) \
  57         param(bool, enable_psr2_sel_fetch, false, 0600) \
  58         param(int, disable_power_well, -1, 0400) \
  59         param(int, enable_ips, 1, 0600) \
  60         param(int, invert_brightness, 0, 0600) \
  61         param(int, enable_guc, 0, 0400) \
  62         param(int, guc_log_level, -1, 0400) \
  63         param(char *, guc_firmware_path, NULL, 0400) \
  64         param(char *, huc_firmware_path, NULL, 0400) \
  65         param(char *, dmc_firmware_path, NULL, 0400) \
  66         param(int, mmio_debug, -IS_ENABLED(CONFIG_DRM_I915_DEBUG_MMIO), 0600) \
  67         param(int, edp_vswing, 0, 0400) \
  68         param(unsigned int, reset, 3, 0600) \
  69         param(unsigned int, inject_probe_failure, 0, 0) \
  70         param(int, fastboot, -1, 0600) \
  71         param(int, enable_dpcd_backlight, -1, 0600) \
  72         param(char *, force_probe, CONFIG_DRM_I915_FORCE_PROBE, 0400) \
  73         param(unsigned long, fake_lmem_start, 0, 0400) \
  74         /* leave bools at the end to not create holes */ \
  75         param(bool, enable_hangcheck, true, 0600) \
  76         param(bool, load_detect_test, false, 0600) \
  77         param(bool, force_reset_modeset_test, false, 0600) \
  78         param(bool, error_capture, true, 0600) \
  79         param(bool, disable_display, false, 0400) \
  80         param(bool, verbose_state_checks, true, 0) \
  81         param(bool, nuclear_pageflip, false, 0400) \
  82         param(bool, enable_dp_mst, true, 0600) \
  83         param(bool, enable_gvt, false, 0400)
  84
  85 #define MEMBER(T, member, ...) T member;
  86 struct i915_params {
  87         I915_PARAMS_FOR_EACH(MEMBER);
  88 };
  89 #undef MEMBER
  90
  91 extern struct i915_params i915_modparams __read_mostly;
  92
  93 void i915_params_dump(const struct i915_params *params, struct drm_printer *p);
  94 void i915_params_copy(struct i915_params *dest, const struct i915_params *src);
  95 void i915_params_free(struct i915_params *params);
  96
  97 #endif
  98