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 	struct notifier_block acpi_notifier;
53 };
54 
55 #define OPREGION_SIZE            (8 * 1024)
56 
57 #ifdef CONFIG_ACPI
58 
59 int intel_opregion_setup(struct drm_i915_private *dev_priv);
60 
61 void intel_opregion_register(struct drm_i915_private *dev_priv);
62 void intel_opregion_unregister(struct drm_i915_private *dev_priv);
63 
64 void intel_opregion_resume(struct drm_i915_private *dev_priv);
65 void intel_opregion_suspend(struct drm_i915_private *dev_priv,
66 			    pci_power_t state);
67 
68 void intel_opregion_asle_intr(struct drm_i915_private *dev_priv);
69 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
70 				  bool enable);
71 int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
72 				  pci_power_t state);
73 int intel_opregion_get_panel_type(struct drm_i915_private *dev_priv);
74 
75 #else /* CONFIG_ACPI*/
76 
77 static inline int intel_opregion_setup(struct drm_i915_private *dev_priv)
78 {
79 	return 0;
80 }
81 
82 static inline void intel_opregion_register(struct drm_i915_private *dev_priv)
83 {
84 }
85 
86 static inline void intel_opregion_unregister(struct drm_i915_private *dev_priv)
87 {
88 }
89 
90 static inline void intel_opregion_resume(struct drm_i915_private *dev_priv)
91 {
92 }
93 
94 static inline void intel_opregion_suspend(struct drm_i915_private *dev_priv,
95 					  pci_power_t state)
96 {
97 }
98 
99 static inline void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
100 {
101 }
102 
103 static inline int
104 intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, bool enable)
105 {
106 	return 0;
107 }
108 
109 static inline int
110 intel_opregion_notify_adapter(struct drm_i915_private *dev, pci_power_t state)
111 {
112 	return 0;
113 }
114 
115 static 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
123