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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>
107 lines
2.4 KiB
C
107 lines
2.4 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 "wis-i2c.h"
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struct wis_ov7640 {
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int brightness;
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int contrast;
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int saturation;
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int hue;
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};
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static u8 initial_registers[] =
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{
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0x12, 0x80,
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0x12, 0x54,
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0x14, 0x24,
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0x15, 0x01,
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0x28, 0x20,
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0x75, 0x82,
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0xFF, 0xFF, /* Terminator (reg 0xFF is unused) */
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};
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static int write_regs(struct i2c_client *client, u8 *regs)
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{
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int i;
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for (i = 0; regs[i] != 0xFF; i += 2)
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if (i2c_smbus_write_byte_data(client, regs[i], regs[i + 1]) < 0)
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return -1;
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return 0;
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}
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static int wis_ov7640_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_BYTE_DATA))
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return -ENODEV;
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client->flags = I2C_CLIENT_SCCB;
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printk(KERN_DEBUG
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"wis-ov7640: initializing OV7640 at address %d on %s\n",
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client->addr, adapter->name);
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if (write_regs(client, initial_registers) < 0) {
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printk(KERN_ERR "wis-ov7640: error initializing OV7640\n");
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return -ENODEV;
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}
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return 0;
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}
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static int wis_ov7640_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_ov7640_id[] = {
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{ "wis_ov7640", 0 },
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{ }
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};
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static struct i2c_driver wis_ov7640_driver = {
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.driver = {
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.name = "WIS OV7640 I2C driver",
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},
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.probe = wis_ov7640_probe,
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.remove = wis_ov7640_remove,
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.id_table = wis_ov7640_id,
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};
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static int __init wis_ov7640_init(void)
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{
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return i2c_add_driver(&wis_ov7640_driver);
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}
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static void __exit wis_ov7640_cleanup(void)
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{
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i2c_del_driver(&wis_ov7640_driver);
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}
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module_init(wis_ov7640_init);
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module_exit(wis_ov7640_cleanup);
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MODULE_LICENSE("GPL v2");
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