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
 31struct drm_i915_private;
 32struct intel_connector;
 33struct intel_encoder;
 34
 35struct opregion_header;
 36struct opregion_acpi;
 37struct opregion_swsci;
 38struct opregion_asle;
 39struct opregion_asle_ext;
 40
 41struct intel_opregion {
 42	struct opregion_header *header;
 43	struct opregion_acpi *acpi;
 44	struct opregion_swsci *swsci;
 45	u32 swsci_gbda_sub_functions;
 46	u32 swsci_sbcb_sub_functions;
 47	struct opregion_asle *asle;
 48	struct opregion_asle_ext *asle_ext;
 49	void *rvda;
 50	void *vbt_firmware;
 51	const void *vbt;
 52	u32 vbt_size;
 53	u32 *lid_state;
 54	struct work_struct asle_work;
 55	struct notifier_block acpi_notifier;
 56};
 57
 58#define OPREGION_SIZE            (8 * 1024)
 59
 60#ifdef CONFIG_ACPI
 61
 62int intel_opregion_setup(struct drm_i915_private *dev_priv);
 63
 64void intel_opregion_register(struct drm_i915_private *dev_priv);
 65void intel_opregion_unregister(struct drm_i915_private *dev_priv);
 66
 67void intel_opregion_resume(struct drm_i915_private *dev_priv);
 68void intel_opregion_suspend(struct drm_i915_private *dev_priv,
 69			    pci_power_t state);
 70
 71void intel_opregion_asle_intr(struct drm_i915_private *dev_priv);
 72int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
 73				  bool enable);
 74int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
 75				  pci_power_t state);
 76int intel_opregion_get_panel_type(struct drm_i915_private *dev_priv);
 77struct edid *intel_opregion_get_edid(struct intel_connector *connector);
 78
 79bool intel_opregion_headless_sku(struct drm_i915_private *i915);
 80
 81#else /* CONFIG_ACPI*/
 82
 83static inline int intel_opregion_setup(struct drm_i915_private *dev_priv)
 84{
 85	return 0;
 86}
 87
 88static inline void intel_opregion_register(struct drm_i915_private *dev_priv)
 89{
 90}
 91
 92static inline void intel_opregion_unregister(struct drm_i915_private *dev_priv)
 93{
 94}
 95
 96static inline void intel_opregion_resume(struct drm_i915_private *dev_priv)
 97{
 98}
 99
100static inline void intel_opregion_suspend(struct drm_i915_private *dev_priv,
101					  pci_power_t state)
102{
103}
104
105static inline void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
106{
107}
108
109static inline int
110intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, bool enable)
111{
112	return 0;
113}
114
115static inline int
116intel_opregion_notify_adapter(struct drm_i915_private *dev, pci_power_t state)
117{
118	return 0;
119}
120
121static inline int intel_opregion_get_panel_type(struct drm_i915_private *dev)
122{
123	return -ENODEV;
124}
125
126static inline struct edid *
127intel_opregion_get_edid(struct intel_connector *connector)
128{
129	return NULL;
130}
131
132static inline bool intel_opregion_headless_sku(struct drm_i915_private *i915)
133{
134	return false;
135}
136
137#endif /* CONFIG_ACPI */
138
139#endif