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_connector;
33 struct intel_encoder;
34 
35 struct opregion_header;
36 struct opregion_acpi;
37 struct opregion_swsci;
38 struct opregion_asle;
39 struct opregion_asle_ext;
40 
41 struct 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 
62 int intel_opregion_setup(struct drm_i915_private *dev_priv);
63 
64 void intel_opregion_register(struct drm_i915_private *dev_priv);
65 void intel_opregion_unregister(struct drm_i915_private *dev_priv);
66 
67 void intel_opregion_resume(struct drm_i915_private *dev_priv);
68 void intel_opregion_suspend(struct drm_i915_private *dev_priv,
69 			    pci_power_t state);
70 
71 void intel_opregion_asle_intr(struct drm_i915_private *dev_priv);
72 int intel_opregion_notify_encoder(struct intel_encoder *intel_encoder,
73 				  bool enable);
74 int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv,
75 				  pci_power_t state);
76 int intel_opregion_get_panel_type(struct drm_i915_private *dev_priv);
77 struct edid *intel_opregion_get_edid(struct intel_connector *connector);
78 
79 #else /* CONFIG_ACPI*/
80 
81 static inline int intel_opregion_setup(struct drm_i915_private *dev_priv)
82 {
83 	return 0;
84 }
85 
86 static inline void intel_opregion_register(struct drm_i915_private *dev_priv)
87 {
88 }
89 
90 static inline void intel_opregion_unregister(struct drm_i915_private *dev_priv)
91 {
92 }
93 
94 static inline void intel_opregion_resume(struct drm_i915_private *dev_priv)
95 {
96 }
97 
98 static inline void intel_opregion_suspend(struct drm_i915_private *dev_priv,
99 					  pci_power_t state)
100 {
101 }
102 
103 static inline void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
104 {
105 }
106 
107 static inline int
108 intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, bool enable)
109 {
110 	return 0;
111 }
112 
113 static inline int
114 intel_opregion_notify_adapter(struct drm_i915_private *dev, pci_power_t state)
115 {
116 	return 0;
117 }
118 
119 static inline int intel_opregion_get_panel_type(struct drm_i915_private *dev)
120 {
121 	return -ENODEV;
122 }
123 
124 static inline struct edid *
125 intel_opregion_get_edid(struct intel_connector *connector)
126 {
127 	return NULL;
128 }
129 
130 #endif /* CONFIG_ACPI */
131 
132 #endif
133