mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 01:41:39 +00:00
7400516ab4
Move the go7007 driver away from the legacy i2c binding model, which is going away really soon now. The I2C addresses of the audio and video chips in s2250-board didn't look quite right, apparently they were left-aligned values when Linux wants right-aligned values, so I fixed them too. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Greg Kroah-Hartman <gregkh@suse.de>
113 lines
2.7 KiB
C
113 lines
2.7 KiB
C
/*
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* Copyright (C) 2005-2006 Micronas USA Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License (Version 2) as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/i2c.h>
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#include <linux/videodev2.h>
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#include <media/tvaudio.h>
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#include <media/v4l2-common.h>
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#include "wis-i2c.h"
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static int write_reg(struct i2c_client *client, int reg, int value)
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{
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/* UDA1342 wants MSB first, but SMBus sends LSB first */
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i2c_smbus_write_word_data(client, reg, swab16(value));
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return 0;
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}
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static int wis_uda1342_command(struct i2c_client *client,
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unsigned int cmd, void *arg)
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{
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switch (cmd) {
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case VIDIOC_S_AUDIO:
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{
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int *inp = arg;
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switch (*inp) {
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case TVAUDIO_INPUT_TUNER:
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write_reg(client, 0x00, 0x1441); /* select input 2 */
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break;
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case TVAUDIO_INPUT_EXTERN:
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write_reg(client, 0x00, 0x1241); /* select input 1 */
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break;
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default:
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printk(KERN_ERR "wis-uda1342: input %d not supported\n",
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*inp);
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break;
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}
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break;
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}
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default:
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break;
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}
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return 0;
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}
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static int wis_uda1342_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct i2c_adapter *adapter = client->adapter;
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if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA))
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return -ENODEV;
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printk(KERN_DEBUG
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"wis-uda1342: initializing UDA1342 at address %d on %s\n",
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client->addr, adapter->name);
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write_reg(client, 0x00, 0x8000); /* reset registers */
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write_reg(client, 0x00, 0x1241); /* select input 1 */
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return 0;
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}
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static int wis_uda1342_remove(struct i2c_client *client)
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{
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return 0;
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}
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static struct i2c_device_id wis_uda1342_id[] = {
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{ "wis_uda1342", 0 },
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{ }
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};
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static struct i2c_driver wis_uda1342_driver = {
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.driver = {
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.name = "WIS UDA1342 I2C driver",
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},
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.probe = wis_uda1342_probe,
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.remove = wis_uda1342_remove,
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.command = wis_uda1342_command,
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.id_table = wis_uda1342_id,
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};
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static int __init wis_uda1342_init(void)
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{
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return i2c_add_driver(&wis_uda1342_driver);
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}
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static void __exit wis_uda1342_cleanup(void)
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{
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i2c_del_driver(&wis_uda1342_driver);
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}
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module_init(wis_uda1342_init);
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module_exit(wis_uda1342_cleanup);
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MODULE_LICENSE("GPL v2");
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