drivers/gpu/drm/i915/intel_opregion.h

   1 /*
   2  * Copyright © 2008-2017 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 _INTEL_OPREGION_H_
  26 #define _INTEL_OPREGION_H_
  27
  28 #include <linux/workqueue.h>
  29 #include <linux/pci.h>
  30
  31 struct drm_i915_private;
  32 struct intel_encoder;
  33
  34 struct opregion_header;
  35 struct opregion_acpi;
  36 struct opregion_swsci;
  37 struct opregion_asle;
  38
  39 struct intel_opregion {
  40         struct opregion_header *header;
  41         struct opregion_acpi *acpi;
  42         struct opregion_swsci *swsci;
  43         u32 swsci_gbda_sub_functions;
  44         u32 swsci_sbcb_sub_functions;
  45         struct opregion_asle *asle;
  46         void *rvda;
  47         void *vbt_firmware;
  48         const void *vbt;
  49         u32 vbt_size;
  50         u32 *lid_state;
  51         struct work_struct asle_work;
  52 };
  53
  54 #define OPREGION_SIZE            (8 * 1024)
  55
  56 #ifdef CONFIG_ACPI
  57
  58 int intel_opregion_setup(struct drm_i915_private *dev_priv);
  59 void intel_opregion_register(struct drm_i915_private *dev_priv);
  60 void intel_opregion_unregister(struct drm_i915_private *dev_priv);
  61 void intel_opregion_asle_intr(struct drm_i915_private *dev_priv);
  62 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
  63                                   bool enable);
  64 int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
  65                                   pci_power_t state);
  66 int intel_opregion_get_panel_type(struct drm_i915_private *dev_priv);
  67
  68 #else /* CONFIG_ACPI*/
  69
  70 static inline int intel_opregion_setup(struct drm_i915_private *dev_priv)
  71 {
  72         return 0;
  73 }
  74
  75 static inline void intel_opregion_register(struct drm_i915_private *dev_priv)
  76 {
  77 }
  78
  79 static inline void intel_opregion_unregister(struct drm_i915_private *dev_priv)
  80 {
  81 }
  82
  83 static inline void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
  84 {
  85 }
  86
  87 static inline int
  88 intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, bool enable)
  89 {
  90         return 0;
  91 }
  92
  93 static inline int
  94 intel_opregion_notify_adapter(struct drm_i915_private *dev, pci_power_t state)
  95 {
  96         return 0;
  97 }
  98
  99 static inline int intel_opregion_get_panel_type(struct drm_i915_private *dev)
 100 {
 101         return -ENODEV;
 102 }
 103
 104 #endif /* CONFIG_ACPI */
 105
 106 #endif