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 const struct drm_edid *intel_opregion_get_edid(struct intel_connector *connector);
78 
79 bool intel_opregion_headless_sku(struct drm_i915_private *i915);
80 
81 #else /* CONFIG_ACPI*/
82 
intel_opregion_setup(struct drm_i915_private * dev_priv)83 static inline int intel_opregion_setup(struct drm_i915_private *dev_priv)
84 {
85 	return 0;
86 }
87 
intel_opregion_register(struct drm_i915_private * dev_priv)88 static inline void intel_opregion_register(struct drm_i915_private *dev_priv)
89 {
90 }
91 
intel_opregion_unregister(struct drm_i915_private * dev_priv)92 static inline void intel_opregion_unregister(struct drm_i915_private *dev_priv)
93 {
94 }
95 
intel_opregion_resume(struct drm_i915_private * dev_priv)96 static inline void intel_opregion_resume(struct drm_i915_private *dev_priv)
97 {
98 }
99 
intel_opregion_suspend(struct drm_i915_private * dev_priv,pci_power_t state)100 static inline void intel_opregion_suspend(struct drm_i915_private *dev_priv,
101 					  pci_power_t state)
102 {
103 }
104 
intel_opregion_asle_intr(struct drm_i915_private * dev_priv)105 static inline void intel_opregion_asle_intr(struct drm_i915_private *dev_priv)
106 {
107 }
108 
109 static inline int
intel_opregion_notify_encoder(struct intel_encoder * intel_encoder,bool enable)110 intel_opregion_notify_encoder(struct intel_encoder *intel_encoder, bool enable)
111 {
112 	return 0;
113 }
114 
115 static inline int
intel_opregion_notify_adapter(struct drm_i915_private * dev,pci_power_t state)116 intel_opregion_notify_adapter(struct drm_i915_private *dev, pci_power_t state)
117 {
118 	return 0;
119 }
120 
intel_opregion_get_panel_type(struct drm_i915_private * dev)121 static inline int intel_opregion_get_panel_type(struct drm_i915_private *dev)
122 {
123 	return -ENODEV;
124 }
125 
126 static inline const struct drm_edid *
intel_opregion_get_edid(struct intel_connector * connector)127 intel_opregion_get_edid(struct intel_connector *connector)
128 {
129 	return NULL;
130 }
131 
intel_opregion_headless_sku(struct drm_i915_private * i915)132 static inline bool intel_opregion_headless_sku(struct drm_i915_private *i915)
133 {
134 	return false;
135 }
136 
137 #endif /* CONFIG_ACPI */
138 
139 #endif
140