+++ /dev/null
-/*
- * v4l2-i2c-drv-legacy.h - contains I2C handling code that's identical
- * for all V4L2 I2C drivers. Use this header if the
- * I2C driver is used by both legacy drivers and
- * drivers converted to the bus-based I2C API.
- *
- * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-/* NOTE: the full version of this header is in the v4l-dvb repository
- * and allows v4l i2c drivers to be compiled on older kernels as well.
- * The version of this header as it appears in the kernel is a stripped
- * version (without all the backwards compatibility stuff) and so it
- * looks a bit odd.
- *
- * If you look at the full version then you will understand the reason
- * for introducing this header since you really don't want to have all
- * the tricky backwards compatibility code in each and every i2c driver.
- */
-
-struct v4l2_i2c_driver_data {
- const char * const name;
- int driverid;
- int (*command)(struct i2c_client *client, unsigned int cmd, void *arg);
- int (*probe)(struct i2c_client *client, const struct i2c_device_id *id);
- int (*remove)(struct i2c_client *client);
- int (*suspend)(struct i2c_client *client, pm_message_t state);
- int (*resume)(struct i2c_client *client);
- int (*legacy_probe)(struct i2c_adapter *adapter);
- int legacy_class;
- const struct i2c_device_id *id_table;
-};
-
-static struct v4l2_i2c_driver_data v4l2_i2c_data;
-static const struct i2c_client_address_data addr_data;
-static struct i2c_driver v4l2_i2c_driver_legacy;
-static char v4l2_i2c_drv_name_legacy[32];
-
-static int v4l2_i2c_drv_attach_legacy(struct i2c_adapter *adapter, int address, int kind)
-{
- return v4l2_i2c_attach(adapter, address, &v4l2_i2c_driver_legacy,
- v4l2_i2c_drv_name_legacy, v4l2_i2c_data.probe);
-}
-
-static int v4l2_i2c_drv_probe_legacy(struct i2c_adapter *adapter)
-{
- if (v4l2_i2c_data.legacy_probe) {
- if (v4l2_i2c_data.legacy_probe(adapter))
- return i2c_probe(adapter, &addr_data, v4l2_i2c_drv_attach_legacy);
- return 0;
- }
- if (adapter->class & v4l2_i2c_data.legacy_class)
- return i2c_probe(adapter, &addr_data, v4l2_i2c_drv_attach_legacy);
- return 0;
-}
-
-static int v4l2_i2c_drv_detach_legacy(struct i2c_client *client)
-{
- int err;
-
- if (v4l2_i2c_data.remove)
- v4l2_i2c_data.remove(client);
-
- err = i2c_detach_client(client);
- if (err)
- return err;
- kfree(client);
- return 0;
-}
-
-static int v4l2_i2c_drv_suspend_helper(struct i2c_client *client, pm_message_t state)
-{
- return v4l2_i2c_data.suspend ? v4l2_i2c_data.suspend(client, state) : 0;
-}
-
-static int v4l2_i2c_drv_resume_helper(struct i2c_client *client)
-{
- return v4l2_i2c_data.resume ? v4l2_i2c_data.resume(client) : 0;
-}
-
-/* ----------------------------------------------------------------------- */
-
-/* i2c implementation */
-static struct i2c_driver v4l2_i2c_driver_legacy = {
- .driver = {
- .owner = THIS_MODULE,
- },
- .attach_adapter = v4l2_i2c_drv_probe_legacy,
- .detach_client = v4l2_i2c_drv_detach_legacy,
- .suspend = v4l2_i2c_drv_suspend_helper,
- .resume = v4l2_i2c_drv_resume_helper,
-};
-
-/* ----------------------------------------------------------------------- */
-
-/* i2c implementation */
-static struct i2c_driver v4l2_i2c_driver = {
- .suspend = v4l2_i2c_drv_suspend_helper,
- .resume = v4l2_i2c_drv_resume_helper,
-};
-
-static int __init v4l2_i2c_drv_init(void)
-{
- int err;
-
- strlcpy(v4l2_i2c_drv_name_legacy, v4l2_i2c_data.name, sizeof(v4l2_i2c_drv_name_legacy));
- strlcat(v4l2_i2c_drv_name_legacy, "'", sizeof(v4l2_i2c_drv_name_legacy));
-
- if (v4l2_i2c_data.legacy_class == 0)
- v4l2_i2c_data.legacy_class = I2C_CLASS_TV_ANALOG;
-
- v4l2_i2c_driver_legacy.driver.name = v4l2_i2c_drv_name_legacy;
- v4l2_i2c_driver_legacy.id = v4l2_i2c_data.driverid;
- v4l2_i2c_driver_legacy.command = v4l2_i2c_data.command;
- err = i2c_add_driver(&v4l2_i2c_driver_legacy);
-
- if (err)
- return err;
- v4l2_i2c_driver.driver.name = v4l2_i2c_data.name;
- v4l2_i2c_driver.id = v4l2_i2c_data.driverid;
- v4l2_i2c_driver.command = v4l2_i2c_data.command;
- v4l2_i2c_driver.probe = v4l2_i2c_data.probe;
- v4l2_i2c_driver.remove = v4l2_i2c_data.remove;
- v4l2_i2c_driver.id_table = v4l2_i2c_data.id_table;
- err = i2c_add_driver(&v4l2_i2c_driver);
- if (err)
- i2c_del_driver(&v4l2_i2c_driver_legacy);
- return err;
-}
-
-static void __exit v4l2_i2c_drv_cleanup(void)
-{
- i2c_del_driver(&v4l2_i2c_driver_legacy);
- i2c_del_driver(&v4l2_i2c_driver);
-}
-
-module_init(v4l2_i2c_drv_init);
-module_exit(v4l2_i2c_drv_cleanup);
projects / linux-2.6-omap-h63xx.git / blobdiff