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sys/dev/drm/core/include/drm/drm_encoder_slave.h
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/* | |||||
* Copyright (C) 2009 Francisco Jerez. | |||||
* All Rights Reserved. | |||||
* | |||||
* Permission is hereby granted, free of charge, to any person obtaining | |||||
* a copy of this software and associated documentation files (the | |||||
* "Software"), to deal in the Software without restriction, including | |||||
* without limitation the rights to use, copy, modify, merge, publish, | |||||
* distribute, sublicense, and/or sell copies of the Software, and to | |||||
* permit persons to whom the Software is furnished to do so, subject to | |||||
* the following conditions: | |||||
* | |||||
* The above copyright notice and this permission notice (including the | |||||
* next paragraph) shall be included in all copies or substantial | |||||
* portions of the Software. | |||||
* | |||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |||||
* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE | |||||
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION | |||||
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | |||||
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |||||
* | |||||
*/ | |||||
#ifndef __DRM_ENCODER_SLAVE_H__ | |||||
#define __DRM_ENCODER_SLAVE_H__ | |||||
#include <drm/drm_crtc.h> | |||||
#include <drm/drm_encoder.h> | |||||
/** | |||||
* struct drm_encoder_slave_funcs - Entry points exposed by a slave encoder driver | |||||
* @set_config: Initialize any encoder-specific modesetting parameters. | |||||
* The meaning of the @params parameter is implementation | |||||
* dependent. It will usually be a structure with DVO port | |||||
* data format settings or timings. It's not required for | |||||
* the new parameters to take effect until the next mode | |||||
* is set. | |||||
* | |||||
* Most of its members are analogous to the function pointers in | |||||
* &drm_encoder_helper_funcs and they can optionally be used to | |||||
* initialize the latter. Connector-like methods (e.g. @get_modes and | |||||
* @set_property) will typically be wrapped around and only be called | |||||
* if the encoder is the currently selected one for the connector. | |||||
*/ | |||||
struct drm_encoder_slave_funcs { | |||||
void (*set_config)(struct drm_encoder *encoder, | |||||
void *params); | |||||
void (*destroy)(struct drm_encoder *encoder); | |||||
void (*dpms)(struct drm_encoder *encoder, int mode); | |||||
void (*save)(struct drm_encoder *encoder); | |||||
void (*restore)(struct drm_encoder *encoder); | |||||
bool (*mode_fixup)(struct drm_encoder *encoder, | |||||
const struct drm_display_mode *mode, | |||||
struct drm_display_mode *adjusted_mode); | |||||
int (*mode_valid)(struct drm_encoder *encoder, | |||||
struct drm_display_mode *mode); | |||||
void (*mode_set)(struct drm_encoder *encoder, | |||||
struct drm_display_mode *mode, | |||||
struct drm_display_mode *adjusted_mode); | |||||
enum drm_connector_status (*detect)(struct drm_encoder *encoder, | |||||
struct drm_connector *connector); | |||||
int (*get_modes)(struct drm_encoder *encoder, | |||||
struct drm_connector *connector); | |||||
int (*create_resources)(struct drm_encoder *encoder, | |||||
struct drm_connector *connector); | |||||
int (*set_property)(struct drm_encoder *encoder, | |||||
struct drm_connector *connector, | |||||
struct drm_property *property, | |||||
uint64_t val); | |||||
}; | |||||
/** | |||||
* struct drm_encoder_slave - Slave encoder struct | |||||
* @base: DRM encoder object. | |||||
* @slave_funcs: Slave encoder callbacks. | |||||
* @slave_priv: Slave encoder private data. | |||||
* @bus_priv: Bus specific data. | |||||
* | |||||
* A &drm_encoder_slave has two sets of callbacks, @slave_funcs and the | |||||
* ones in @base. The former are never actually called by the common | |||||
* CRTC code, it's just a convenience for splitting the encoder | |||||
* functions in an upper, GPU-specific layer and a (hopefully) | |||||
* GPU-agnostic lower layer: It's the GPU driver responsibility to | |||||
* call the slave methods when appropriate. | |||||
* | |||||
* drm_i2c_encoder_init() provides a way to get an implementation of | |||||
* this. | |||||
*/ | |||||
struct drm_encoder_slave { | |||||
struct drm_encoder base; | |||||
const struct drm_encoder_slave_funcs *slave_funcs; | |||||
void *slave_priv; | |||||
void *bus_priv; | |||||
}; | |||||
#define to_encoder_slave(x) container_of((x), struct drm_encoder_slave, base) | |||||
int drm_i2c_encoder_init(struct drm_device *dev, | |||||
struct drm_encoder_slave *encoder, | |||||
struct i2c_adapter *adap, | |||||
const struct i2c_board_info *info); | |||||
/** | |||||
* struct drm_i2c_encoder_driver | |||||
* | |||||
* Describes a device driver for an encoder connected to the GPU | |||||
* through an I2C bus. In addition to the entry points in @i2c_driver | |||||
* an @encoder_init function should be provided. It will be called to | |||||
* give the driver an opportunity to allocate any per-encoder data | |||||
* structures and to initialize the @slave_funcs and (optionally) | |||||
* @slave_priv members of @encoder. | |||||
*/ | |||||
struct drm_i2c_encoder_driver { | |||||
struct i2c_driver i2c_driver; | |||||
int (*encoder_init)(struct i2c_client *client, | |||||
struct drm_device *dev, | |||||
struct drm_encoder_slave *encoder); | |||||
}; | |||||
#define to_drm_i2c_encoder_driver(x) container_of((x), \ | |||||
struct drm_i2c_encoder_driver, \ | |||||
i2c_driver) | |||||
/** | |||||
* drm_i2c_encoder_get_client - Get the I2C client corresponding to an encoder | |||||
*/ | |||||
static inline struct i2c_client *drm_i2c_encoder_get_client(struct drm_encoder *encoder) | |||||
{ | |||||
return (struct i2c_client *)to_encoder_slave(encoder)->bus_priv; | |||||
} | |||||
/** | |||||
* drm_i2c_encoder_register - Register an I2C encoder driver | |||||
* @owner: Module containing the driver. | |||||
* @driver: Driver to be registered. | |||||
*/ | |||||
static inline int drm_i2c_encoder_register(struct module *owner, | |||||
struct drm_i2c_encoder_driver *driver) | |||||
{ | |||||
return i2c_register_driver(owner, &driver->i2c_driver); | |||||
} | |||||
/** | |||||
* drm_i2c_encoder_unregister - Unregister an I2C encoder driver | |||||
* @driver: Driver to be unregistered. | |||||
*/ | |||||
static inline void drm_i2c_encoder_unregister(struct drm_i2c_encoder_driver *driver) | |||||
{ | |||||
i2c_del_driver(&driver->i2c_driver); | |||||
} | |||||
void drm_i2c_encoder_destroy(struct drm_encoder *encoder); | |||||
/* | |||||
* Wrapper fxns which can be plugged in to drm_encoder_helper_funcs: | |||||
*/ | |||||
void drm_i2c_encoder_dpms(struct drm_encoder *encoder, int mode); | |||||
bool drm_i2c_encoder_mode_fixup(struct drm_encoder *encoder, | |||||
const struct drm_display_mode *mode, | |||||
struct drm_display_mode *adjusted_mode); | |||||
void drm_i2c_encoder_prepare(struct drm_encoder *encoder); | |||||
void drm_i2c_encoder_commit(struct drm_encoder *encoder); | |||||
void drm_i2c_encoder_mode_set(struct drm_encoder *encoder, | |||||
struct drm_display_mode *mode, | |||||
struct drm_display_mode *adjusted_mode); | |||||
enum drm_connector_status drm_i2c_encoder_detect(struct drm_encoder *encoder, | |||||
struct drm_connector *connector); | |||||
void drm_i2c_encoder_save(struct drm_encoder *encoder); | |||||
void drm_i2c_encoder_restore(struct drm_encoder *encoder); | |||||
#endif |