e12771100c
This is no longer needed since the core now handles this through DBG_G_CHIP_INFO. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
/*
|
|
* Copyright (C) 2005-2006 Micronas USA Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License (Version 2) as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* 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., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/videodev2.h>
|
|
#include <media/v4l2-device.h>
|
|
#include <linux/slab.h>
|
|
|
|
MODULE_DESCRIPTION("OmniVision ov7640 sensor driver");
|
|
MODULE_LICENSE("GPL v2");
|
|
|
|
static const u8 initial_registers[] = {
|
|
0x12, 0x80,
|
|
0x12, 0x54,
|
|
0x14, 0x24,
|
|
0x15, 0x01,
|
|
0x28, 0x20,
|
|
0x75, 0x82,
|
|
0xFF, 0xFF, /* Terminator (reg 0xFF is unused) */
|
|
};
|
|
|
|
static int write_regs(struct i2c_client *client, const u8 *regs)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; regs[i] != 0xFF; i += 2)
|
|
if (i2c_smbus_write_byte_data(client, regs[i], regs[i + 1]) < 0)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static const struct v4l2_subdev_ops ov7640_ops;
|
|
|
|
static int ov7640_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct i2c_adapter *adapter = client->adapter;
|
|
struct v4l2_subdev *sd;
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
return -ENODEV;
|
|
|
|
sd = devm_kzalloc(&client->dev, sizeof(*sd), GFP_KERNEL);
|
|
if (sd == NULL)
|
|
return -ENOMEM;
|
|
v4l2_i2c_subdev_init(sd, client, &ov7640_ops);
|
|
|
|
client->flags = I2C_CLIENT_SCCB;
|
|
|
|
v4l_info(client, "chip found @ 0x%02x (%s)\n",
|
|
client->addr << 1, client->adapter->name);
|
|
|
|
if (write_regs(client, initial_registers) < 0) {
|
|
v4l_err(client, "error initializing OV7640\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int ov7640_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
|
|
v4l2_device_unregister_subdev(sd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id ov7640_id[] = {
|
|
{ "ov7640", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, ov7640_id);
|
|
|
|
static struct i2c_driver ov7640_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "ov7640",
|
|
},
|
|
.probe = ov7640_probe,
|
|
.remove = ov7640_remove,
|
|
.id_table = ov7640_id,
|
|
};
|
|
module_i2c_driver(ov7640_driver);
|