/* * 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. *
*/
#include <linux/module.h>
#include <dispnv04/i2c/encoder_i2c.h>
/** * nouveau_i2c_encoder_init - Initialize an I2C slave encoder * @dev: DRM device. * @encoder: Encoder to be attached to the I2C device. You aren't * required to have called drm_encoder_init() before. * @adap: I2C adapter that will be used to communicate with * the device. * @info: Information that will be used to create the I2C device. * Required fields are @addr and @type. * * Create an I2C device on the specified bus (the module containing its * driver is transparently loaded) and attach it to the specified * &nouveau_i2c_encoder. The @encoder_i2c_funcs field will be initialized with * the hooks provided by the slave driver. * * If @info.platform_data is non-NULL it will be used as the initial * slave config. * * Returns 0 on success or a negative errno on failure, in particular, * -ENODEV is returned when no matching driver is found.
*/ int nouveau_i2c_encoder_init(struct drm_device *dev, struct nouveau_i2c_encoder *encoder, struct i2c_adapter *adap, conststruct i2c_board_info *info)
{ struct module *module = NULL; struct i2c_client *client; struct nouveau_i2c_encoder_driver *encoder_drv; int err = 0;
/** * nouveau_i2c_encoder_destroy - Unregister the I2C device backing an encoder * @drm_encoder: Encoder to be unregistered. * * This should be called from the @destroy method of an I2C slave * encoder driver once I2C access is no longer needed.
*/ void nouveau_i2c_encoder_destroy(struct drm_encoder *drm_encoder)
{ struct nouveau_i2c_encoder *encoder = to_encoder_i2c(drm_encoder); struct i2c_client *client = nouveau_i2c_encoder_get_client(drm_encoder); struct module *module = client->dev.driver->owner;
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