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1/*
2 * Copyright (C) 2009 Francisco Jerez.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 */
26
27#ifndef __DRM_ENCODER_SLAVE_H__
28#define __DRM_ENCODER_SLAVE_H__
29
30#include <linux/i2c.h>
31
32#include <drm/drm_crtc.h>
33#include <drm/drm_encoder.h>
34
35/**
36 * struct drm_encoder_slave_funcs - Entry points exposed by a slave encoder driver
37 * @set_config: Initialize any encoder-specific modesetting parameters.
38 * The meaning of the @params parameter is implementation
39 * dependent. It will usually be a structure with DVO port
40 * data format settings or timings. It's not required for
41 * the new parameters to take effect until the next mode
42 * is set.
43 *
44 * Most of its members are analogous to the function pointers in
45 * &drm_encoder_helper_funcs and they can optionally be used to
46 * initialize the latter. Connector-like methods (e.g. @get_modes and
47 * @set_property) will typically be wrapped around and only be called
48 * if the encoder is the currently selected one for the connector.
49 */
50struct drm_encoder_slave_funcs {
51 void (*set_config)(struct drm_encoder *encoder,
52 void *params);
53
54 void (*destroy)(struct drm_encoder *encoder);
55 void (*dpms)(struct drm_encoder *encoder, int mode);
56 void (*save)(struct drm_encoder *encoder);
57 void (*restore)(struct drm_encoder *encoder);
58 bool (*mode_fixup)(struct drm_encoder *encoder,
59 const struct drm_display_mode *mode,
60 struct drm_display_mode *adjusted_mode);
61 int (*mode_valid)(struct drm_encoder *encoder,
62 struct drm_display_mode *mode);
63 void (*mode_set)(struct drm_encoder *encoder,
64 struct drm_display_mode *mode,
65 struct drm_display_mode *adjusted_mode);
66
67 enum drm_connector_status (*detect)(struct drm_encoder *encoder,
68 struct drm_connector *connector);
69 int (*get_modes)(struct drm_encoder *encoder,
70 struct drm_connector *connector);
71 int (*create_resources)(struct drm_encoder *encoder,
72 struct drm_connector *connector);
73 int (*set_property)(struct drm_encoder *encoder,
74 struct drm_connector *connector,
75 struct drm_property *property,
76 uint64_t val);
77
78};
79
80/**
81 * struct drm_encoder_slave - Slave encoder struct
82 * @base: DRM encoder object.
83 * @slave_funcs: Slave encoder callbacks.
84 * @slave_priv: Slave encoder private data.
85 * @bus_priv: Bus specific data.
86 *
87 * A &drm_encoder_slave has two sets of callbacks, @slave_funcs and the
88 * ones in @base. The former are never actually called by the common
89 * CRTC code, it's just a convenience for splitting the encoder
90 * functions in an upper, GPU-specific layer and a (hopefully)
91 * GPU-agnostic lower layer: It's the GPU driver responsibility to
92 * call the slave methods when appropriate.
93 *
94 * drm_i2c_encoder_init() provides a way to get an implementation of
95 * this.
96 */
97struct drm_encoder_slave {
98 struct drm_encoder base;
99
100 const struct drm_encoder_slave_funcs *slave_funcs;
101 void *slave_priv;
102 void *bus_priv;
103};
104#define to_encoder_slave(x) container_of((x), struct drm_encoder_slave, base)
105
106int drm_i2c_encoder_init(struct drm_device *dev,
107 struct drm_encoder_slave *encoder,
108 struct i2c_adapter *adap,
109 const struct i2c_board_info *info);
110
111
112/**
113 * struct drm_i2c_encoder_driver
114 *
115 * Describes a device driver for an encoder connected to the GPU
116 * through an I2C bus. In addition to the entry points in @i2c_driver
117 * an @encoder_init function should be provided. It will be called to
118 * give the driver an opportunity to allocate any per-encoder data
119 * structures and to initialize the @slave_funcs and (optionally)
120 * @slave_priv members of @encoder.
121 */
122struct drm_i2c_encoder_driver {
123 struct i2c_driver i2c_driver;
124
125 int (*encoder_init)(struct i2c_client *client,
126 struct drm_device *dev,
127 struct drm_encoder_slave *encoder);
128
129};
130#define to_drm_i2c_encoder_driver(x) container_of((x), \
131 struct drm_i2c_encoder_driver, \
132 i2c_driver)
133
134/**
135 * drm_i2c_encoder_get_client - Get the I2C client corresponding to an encoder
136 */
137static inline struct i2c_client *drm_i2c_encoder_get_client(struct drm_encoder *encoder)
138{
139 return (struct i2c_client *)to_encoder_slave(encoder)->bus_priv;
140}
141
142/**
143 * drm_i2c_encoder_register - Register an I2C encoder driver
144 * @owner: Module containing the driver.
145 * @driver: Driver to be registered.
146 */
147static inline int drm_i2c_encoder_register(struct module *owner,
148 struct drm_i2c_encoder_driver *driver)
149{
150 return i2c_register_driver(owner, &driver->i2c_driver);
151}
152
153/**
154 * drm_i2c_encoder_unregister - Unregister an I2C encoder driver
155 * @driver: Driver to be unregistered.
156 */
157static inline void drm_i2c_encoder_unregister(struct drm_i2c_encoder_driver *driver)
158{
159 i2c_del_driver(&driver->i2c_driver);
160}
161
162void drm_i2c_encoder_destroy(struct drm_encoder *encoder);
163
164
165/*
166 * Wrapper fxns which can be plugged in to drm_encoder_helper_funcs:
167 */
168
169void drm_i2c_encoder_dpms(struct drm_encoder *encoder, int mode);
170bool drm_i2c_encoder_mode_fixup(struct drm_encoder *encoder,
171 const struct drm_display_mode *mode,
172 struct drm_display_mode *adjusted_mode);
173void drm_i2c_encoder_prepare(struct drm_encoder *encoder);
174void drm_i2c_encoder_commit(struct drm_encoder *encoder);
175void drm_i2c_encoder_mode_set(struct drm_encoder *encoder,
176 struct drm_display_mode *mode,
177 struct drm_display_mode *adjusted_mode);
178enum drm_connector_status drm_i2c_encoder_detect(struct drm_encoder *encoder,
179 struct drm_connector *connector);
180void drm_i2c_encoder_save(struct drm_encoder *encoder);
181void drm_i2c_encoder_restore(struct drm_encoder *encoder);
182
183
184#endif
1/*
2 * Copyright (C) 2009 Francisco Jerez.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 */
26
27#ifndef __DRM_ENCODER_SLAVE_H__
28#define __DRM_ENCODER_SLAVE_H__
29
30#include <drm/drmP.h>
31#include <drm/drm_crtc.h>
32#include <drm/drm_encoder.h>
33
34/**
35 * struct drm_encoder_slave_funcs - Entry points exposed by a slave encoder driver
36 * @set_config: Initialize any encoder-specific modesetting parameters.
37 * The meaning of the @params parameter is implementation
38 * dependent. It will usually be a structure with DVO port
39 * data format settings or timings. It's not required for
40 * the new parameters to take effect until the next mode
41 * is set.
42 *
43 * Most of its members are analogous to the function pointers in
44 * &drm_encoder_helper_funcs and they can optionally be used to
45 * initialize the latter. Connector-like methods (e.g. @get_modes and
46 * @set_property) will typically be wrapped around and only be called
47 * if the encoder is the currently selected one for the connector.
48 */
49struct drm_encoder_slave_funcs {
50 void (*set_config)(struct drm_encoder *encoder,
51 void *params);
52
53 void (*destroy)(struct drm_encoder *encoder);
54 void (*dpms)(struct drm_encoder *encoder, int mode);
55 void (*save)(struct drm_encoder *encoder);
56 void (*restore)(struct drm_encoder *encoder);
57 bool (*mode_fixup)(struct drm_encoder *encoder,
58 const struct drm_display_mode *mode,
59 struct drm_display_mode *adjusted_mode);
60 int (*mode_valid)(struct drm_encoder *encoder,
61 struct drm_display_mode *mode);
62 void (*mode_set)(struct drm_encoder *encoder,
63 struct drm_display_mode *mode,
64 struct drm_display_mode *adjusted_mode);
65
66 enum drm_connector_status (*detect)(struct drm_encoder *encoder,
67 struct drm_connector *connector);
68 int (*get_modes)(struct drm_encoder *encoder,
69 struct drm_connector *connector);
70 int (*create_resources)(struct drm_encoder *encoder,
71 struct drm_connector *connector);
72 int (*set_property)(struct drm_encoder *encoder,
73 struct drm_connector *connector,
74 struct drm_property *property,
75 uint64_t val);
76
77};
78
79/**
80 * struct drm_encoder_slave - Slave encoder struct
81 * @base: DRM encoder object.
82 * @slave_funcs: Slave encoder callbacks.
83 * @slave_priv: Slave encoder private data.
84 * @bus_priv: Bus specific data.
85 *
86 * A &drm_encoder_slave has two sets of callbacks, @slave_funcs and the
87 * ones in @base. The former are never actually called by the common
88 * CRTC code, it's just a convenience for splitting the encoder
89 * functions in an upper, GPU-specific layer and a (hopefully)
90 * GPU-agnostic lower layer: It's the GPU driver responsibility to
91 * call the slave methods when appropriate.
92 *
93 * drm_i2c_encoder_init() provides a way to get an implementation of
94 * this.
95 */
96struct drm_encoder_slave {
97 struct drm_encoder base;
98
99 const struct drm_encoder_slave_funcs *slave_funcs;
100 void *slave_priv;
101 void *bus_priv;
102};
103#define to_encoder_slave(x) container_of((x), struct drm_encoder_slave, base)
104
105int drm_i2c_encoder_init(struct drm_device *dev,
106 struct drm_encoder_slave *encoder,
107 struct i2c_adapter *adap,
108 const struct i2c_board_info *info);
109
110
111/**
112 * struct drm_i2c_encoder_driver
113 *
114 * Describes a device driver for an encoder connected to the GPU
115 * through an I2C bus. In addition to the entry points in @i2c_driver
116 * an @encoder_init function should be provided. It will be called to
117 * give the driver an opportunity to allocate any per-encoder data
118 * structures and to initialize the @slave_funcs and (optionally)
119 * @slave_priv members of @encoder.
120 */
121struct drm_i2c_encoder_driver {
122 struct i2c_driver i2c_driver;
123
124 int (*encoder_init)(struct i2c_client *client,
125 struct drm_device *dev,
126 struct drm_encoder_slave *encoder);
127
128};
129#define to_drm_i2c_encoder_driver(x) container_of((x), \
130 struct drm_i2c_encoder_driver, \
131 i2c_driver)
132
133/**
134 * drm_i2c_encoder_get_client - Get the I2C client corresponding to an encoder
135 */
136static inline struct i2c_client *drm_i2c_encoder_get_client(struct drm_encoder *encoder)
137{
138 return (struct i2c_client *)to_encoder_slave(encoder)->bus_priv;
139}
140
141/**
142 * drm_i2c_encoder_register - Register an I2C encoder driver
143 * @owner: Module containing the driver.
144 * @driver: Driver to be registered.
145 */
146static inline int drm_i2c_encoder_register(struct module *owner,
147 struct drm_i2c_encoder_driver *driver)
148{
149 return i2c_register_driver(owner, &driver->i2c_driver);
150}
151
152/**
153 * drm_i2c_encoder_unregister - Unregister an I2C encoder driver
154 * @driver: Driver to be unregistered.
155 */
156static inline void drm_i2c_encoder_unregister(struct drm_i2c_encoder_driver *driver)
157{
158 i2c_del_driver(&driver->i2c_driver);
159}
160
161void drm_i2c_encoder_destroy(struct drm_encoder *encoder);
162
163
164/*
165 * Wrapper fxns which can be plugged in to drm_encoder_helper_funcs:
166 */
167
168void drm_i2c_encoder_dpms(struct drm_encoder *encoder, int mode);
169bool drm_i2c_encoder_mode_fixup(struct drm_encoder *encoder,
170 const struct drm_display_mode *mode,
171 struct drm_display_mode *adjusted_mode);
172void drm_i2c_encoder_prepare(struct drm_encoder *encoder);
173void drm_i2c_encoder_commit(struct drm_encoder *encoder);
174void drm_i2c_encoder_mode_set(struct drm_encoder *encoder,
175 struct drm_display_mode *mode,
176 struct drm_display_mode *adjusted_mode);
177enum drm_connector_status drm_i2c_encoder_detect(struct drm_encoder *encoder,
178 struct drm_connector *connector);
179void drm_i2c_encoder_save(struct drm_encoder *encoder);
180void drm_i2c_encoder_restore(struct drm_encoder *encoder);
181
182
183#endif