Loading...
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 "drmP.h"
31#include "drm_crtc.h"
32
33/**
34 * struct drm_encoder_slave_funcs - Entry points exposed by a slave encoder driver
35 * @set_config: Initialize any encoder-specific modesetting parameters.
36 * The meaning of the @params parameter is implementation
37 * dependent. It will usually be a structure with DVO port
38 * data format settings or timings. It's not required for
39 * the new parameters to take effect until the next mode
40 * is set.
41 *
42 * Most of its members are analogous to the function pointers in
43 * &drm_encoder_helper_funcs and they can optionally be used to
44 * initialize the latter. Connector-like methods (e.g. @get_modes and
45 * @set_property) will typically be wrapped around and only be called
46 * if the encoder is the currently selected one for the connector.
47 */
48struct drm_encoder_slave_funcs {
49 void (*set_config)(struct drm_encoder *encoder,
50 void *params);
51
52 void (*destroy)(struct drm_encoder *encoder);
53 void (*dpms)(struct drm_encoder *encoder, int mode);
54 void (*save)(struct drm_encoder *encoder);
55 void (*restore)(struct drm_encoder *encoder);
56 bool (*mode_fixup)(struct drm_encoder *encoder,
57 struct drm_display_mode *mode,
58 struct drm_display_mode *adjusted_mode);
59 int (*mode_valid)(struct drm_encoder *encoder,
60 struct drm_display_mode *mode);
61 void (*mode_set)(struct drm_encoder *encoder,
62 struct drm_display_mode *mode,
63 struct drm_display_mode *adjusted_mode);
64
65 enum drm_connector_status (*detect)(struct drm_encoder *encoder,
66 struct drm_connector *connector);
67 int (*get_modes)(struct drm_encoder *encoder,
68 struct drm_connector *connector);
69 int (*create_resources)(struct drm_encoder *encoder,
70 struct drm_connector *connector);
71 int (*set_property)(struct drm_encoder *encoder,
72 struct drm_connector *connector,
73 struct drm_property *property,
74 uint64_t val);
75
76};
77
78/**
79 * struct drm_encoder_slave - Slave encoder struct
80 * @base: DRM encoder object.
81 * @slave_funcs: Slave encoder callbacks.
82 * @slave_priv: Slave encoder private data.
83 * @bus_priv: Bus specific data.
84 *
85 * A &drm_encoder_slave has two sets of callbacks, @slave_funcs and the
86 * ones in @base. The former are never actually called by the common
87 * CRTC code, it's just a convenience for splitting the encoder
88 * functions in an upper, GPU-specific layer and a (hopefully)
89 * GPU-agnostic lower layer: It's the GPU driver responsibility to
90 * call the slave methods when appropriate.
91 *
92 * drm_i2c_encoder_init() provides a way to get an implementation of
93 * this.
94 */
95struct drm_encoder_slave {
96 struct drm_encoder base;
97
98 struct drm_encoder_slave_funcs *slave_funcs;
99 void *slave_priv;
100 void *bus_priv;
101};
102#define to_encoder_slave(x) container_of((x), struct drm_encoder_slave, base)
103
104int drm_i2c_encoder_init(struct drm_device *dev,
105 struct drm_encoder_slave *encoder,
106 struct i2c_adapter *adap,
107 const struct i2c_board_info *info);
108
109
110/**
111 * struct drm_i2c_encoder_driver
112 *
113 * Describes a device driver for an encoder connected to the GPU
114 * through an I2C bus. In addition to the entry points in @i2c_driver
115 * an @encoder_init function should be provided. It will be called to
116 * give the driver an opportunity to allocate any per-encoder data
117 * structures and to initialize the @slave_funcs and (optionally)
118 * @slave_priv members of @encoder.
119 */
120struct drm_i2c_encoder_driver {
121 struct i2c_driver i2c_driver;
122
123 int (*encoder_init)(struct i2c_client *client,
124 struct drm_device *dev,
125 struct drm_encoder_slave *encoder);
126
127};
128#define to_drm_i2c_encoder_driver(x) container_of((x), \
129 struct drm_i2c_encoder_driver, \
130 i2c_driver)
131
132/**
133 * drm_i2c_encoder_get_client - Get the I2C client corresponding to an encoder
134 */
135static inline struct i2c_client *drm_i2c_encoder_get_client(struct drm_encoder *encoder)
136{
137 return (struct i2c_client *)to_encoder_slave(encoder)->bus_priv;
138}
139
140/**
141 * drm_i2c_encoder_register - Register an I2C encoder driver
142 * @owner: Module containing the driver.
143 * @driver: Driver to be registered.
144 */
145static inline int drm_i2c_encoder_register(struct module *owner,
146 struct drm_i2c_encoder_driver *driver)
147{
148 return i2c_register_driver(owner, &driver->i2c_driver);
149}
150
151/**
152 * drm_i2c_encoder_unregister - Unregister an I2C encoder driver
153 * @driver: Driver to be unregistered.
154 */
155static inline void drm_i2c_encoder_unregister(struct drm_i2c_encoder_driver *driver)
156{
157 i2c_del_driver(&driver->i2c_driver);
158}
159
160void drm_i2c_encoder_destroy(struct drm_encoder *encoder);
161
162#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 <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