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_encoder;
 33
 34struct opregion_header;
 35struct opregion_acpi;
 36struct opregion_swsci;
 37struct opregion_asle;
 38
 39struct 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	struct notifier_block acpi_notifier;
 53};
 54
 55#define OPREGION_SIZE            (8 * 1024)
 56
 57#ifdef CONFIG_ACPI
 58
 59int intel_opregion_setup(struct drm_i915_private *dev_priv);
 60
 61void intel_opregion_register(struct drm_i915_private *dev_priv);
 62void intel_opregion_unregister(struct drm_i915_private *dev_priv);
 63
 64void intel_opregion_resume(struct drm_i915_private *dev_priv);
 65void intel_opregion_suspend(struct drm_i915_private *dev_priv,
 66			    pci_power_t state);
 67
 68void intel_opregion_asle_intr(struct drm_i915_private *dev_priv);
 69int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
 70				  bool enable);
 71int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
 72				  pci_power_t state);
 73int intel_opregion_get_panel_type(struct drm_i915_private *dev_priv);
 74
 75#else /* CONFIG_ACPI*/
 76
 77static inline int intel_opregion_setup(struct drm_i915_private *dev_priv)
 78{
 79	return 0;
 80}
 81
 82static inline void intel_opregion_register(struct drm_i915_private *dev_priv)
 83{
 84}
 85
 86static inline void intel_opregion_unregister(struct drm_i915_private *dev_priv)
 87{
 88}
 89
 90static inline void intel_opregion_resume(struct drm_i915_private *dev_priv)
 91{
 92}
 93
 94static inline void intel_opregion_suspend(struct drm_i915_private *dev_priv,
 95					  pci_power_t state)
 96{
 97}
 98
 99static inline void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
100{
101}
102
103static inline int
104intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, bool enable)
105{
106	return 0;
107}
108
109static inline int
110intel_opregion_notify_adapter(struct drm_i915_private *dev, pci_power_t state)
111{
112	return 0;
113}
114
115static inline int intel_opregion_get_panel_type(struct drm_i915_private *dev)
116{
117	return -ENODEV;
118}
119
120#endif /* CONFIG_ACPI */
121
122#endif