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