![Wei Yongjun](/assets/img/avatar_default.png)
Use the module_i2c_driver() macro to make the code smaller and a bit simpler. dpatch engine is used to auto generate this patch. (https://github.com/weiyj/dpatch) Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
347 lines
7.5 KiB
C
347 lines
7.5 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/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/videodev2.h>
|
|
#include <linux/ioctl.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include "wis-i2c.h"
|
|
|
|
struct wis_tw2804 {
|
|
int channel;
|
|
int norm;
|
|
int brightness;
|
|
int contrast;
|
|
int saturation;
|
|
int hue;
|
|
};
|
|
|
|
static u8 global_registers[] = {
|
|
0x39, 0x00,
|
|
0x3a, 0xff,
|
|
0x3b, 0x84,
|
|
0x3c, 0x80,
|
|
0x3d, 0x80,
|
|
0x3e, 0x82,
|
|
0x3f, 0x82,
|
|
0xff, 0xff, /* Terminator (reg 0xff does not exist) */
|
|
};
|
|
|
|
static u8 channel_registers[] = {
|
|
0x01, 0xc4,
|
|
0x02, 0xa5,
|
|
0x03, 0x20,
|
|
0x04, 0xd0,
|
|
0x05, 0x20,
|
|
0x06, 0xd0,
|
|
0x07, 0x88,
|
|
0x08, 0x20,
|
|
0x09, 0x07,
|
|
0x0a, 0xf0,
|
|
0x0b, 0x07,
|
|
0x0c, 0xf0,
|
|
0x0d, 0x40,
|
|
0x0e, 0xd2,
|
|
0x0f, 0x80,
|
|
0x10, 0x80,
|
|
0x11, 0x80,
|
|
0x12, 0x80,
|
|
0x13, 0x1f,
|
|
0x14, 0x00,
|
|
0x15, 0x00,
|
|
0x16, 0x00,
|
|
0x17, 0x00,
|
|
0x18, 0xff,
|
|
0x19, 0xff,
|
|
0x1a, 0xff,
|
|
0x1b, 0xff,
|
|
0x1c, 0xff,
|
|
0x1d, 0xff,
|
|
0x1e, 0xff,
|
|
0x1f, 0xff,
|
|
0x20, 0x07,
|
|
0x21, 0x07,
|
|
0x22, 0x00,
|
|
0x23, 0x91,
|
|
0x24, 0x51,
|
|
0x25, 0x03,
|
|
0x26, 0x00,
|
|
0x27, 0x00,
|
|
0x28, 0x00,
|
|
0x29, 0x00,
|
|
0x2a, 0x00,
|
|
0x2b, 0x00,
|
|
0x2c, 0x00,
|
|
0x2d, 0x00,
|
|
0x2e, 0x00,
|
|
0x2f, 0x00,
|
|
0x30, 0x00,
|
|
0x31, 0x00,
|
|
0x32, 0x00,
|
|
0x33, 0x00,
|
|
0x34, 0x00,
|
|
0x35, 0x00,
|
|
0x36, 0x00,
|
|
0x37, 0x00,
|
|
0xff, 0xff, /* Terminator (reg 0xff does not exist) */
|
|
};
|
|
|
|
static int write_reg(struct i2c_client *client, u8 reg, u8 value, int channel)
|
|
{
|
|
return i2c_smbus_write_byte_data(client, reg | (channel << 6), value);
|
|
}
|
|
|
|
static int write_regs(struct i2c_client *client, u8 *regs, int channel)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; regs[i] != 0xff; i += 2)
|
|
if (i2c_smbus_write_byte_data(client,
|
|
regs[i] | (channel << 6), regs[i + 1]) < 0)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
static int wis_tw2804_command(struct i2c_client *client,
|
|
unsigned int cmd, void *arg)
|
|
{
|
|
struct wis_tw2804 *dec = i2c_get_clientdata(client);
|
|
|
|
if (cmd == DECODER_SET_CHANNEL) {
|
|
int *input = arg;
|
|
|
|
if (*input < 0 || *input > 3) {
|
|
printk(KERN_ERR "wis-tw2804: channel %d is not "
|
|
"between 0 and 3!\n", *input);
|
|
return 0;
|
|
}
|
|
dec->channel = *input;
|
|
printk(KERN_DEBUG "wis-tw2804: initializing TW2804 "
|
|
"channel %d\n", dec->channel);
|
|
if (dec->channel == 0 &&
|
|
write_regs(client, global_registers, 0) < 0) {
|
|
printk(KERN_ERR "wis-tw2804: error initializing "
|
|
"TW2804 global registers\n");
|
|
return 0;
|
|
}
|
|
if (write_regs(client, channel_registers, dec->channel) < 0) {
|
|
printk(KERN_ERR "wis-tw2804: error initializing "
|
|
"TW2804 channel %d\n", dec->channel);
|
|
return 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (dec->channel < 0) {
|
|
printk(KERN_DEBUG "wis-tw2804: ignoring command %08x until "
|
|
"channel number is set\n", cmd);
|
|
return 0;
|
|
}
|
|
|
|
switch (cmd) {
|
|
case VIDIOC_S_STD:
|
|
{
|
|
v4l2_std_id *input = arg;
|
|
u8 regs[] = {
|
|
0x01, *input & V4L2_STD_NTSC ? 0xc4 : 0x84,
|
|
0x09, *input & V4L2_STD_NTSC ? 0x07 : 0x04,
|
|
0x0a, *input & V4L2_STD_NTSC ? 0xf0 : 0x20,
|
|
0x0b, *input & V4L2_STD_NTSC ? 0x07 : 0x04,
|
|
0x0c, *input & V4L2_STD_NTSC ? 0xf0 : 0x20,
|
|
0x0d, *input & V4L2_STD_NTSC ? 0x40 : 0x4a,
|
|
0x16, *input & V4L2_STD_NTSC ? 0x00 : 0x40,
|
|
0x17, *input & V4L2_STD_NTSC ? 0x00 : 0x40,
|
|
0x20, *input & V4L2_STD_NTSC ? 0x07 : 0x0f,
|
|
0x21, *input & V4L2_STD_NTSC ? 0x07 : 0x0f,
|
|
0xff, 0xff,
|
|
};
|
|
write_regs(client, regs, dec->channel);
|
|
dec->norm = *input;
|
|
break;
|
|
}
|
|
case VIDIOC_QUERYCTRL:
|
|
{
|
|
struct v4l2_queryctrl *ctrl = arg;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_BRIGHTNESS:
|
|
ctrl->type = V4L2_CTRL_TYPE_INTEGER;
|
|
strncpy(ctrl->name, "Brightness", sizeof(ctrl->name));
|
|
ctrl->minimum = 0;
|
|
ctrl->maximum = 255;
|
|
ctrl->step = 1;
|
|
ctrl->default_value = 128;
|
|
ctrl->flags = 0;
|
|
break;
|
|
case V4L2_CID_CONTRAST:
|
|
ctrl->type = V4L2_CTRL_TYPE_INTEGER;
|
|
strncpy(ctrl->name, "Contrast", sizeof(ctrl->name));
|
|
ctrl->minimum = 0;
|
|
ctrl->maximum = 255;
|
|
ctrl->step = 1;
|
|
ctrl->default_value = 128;
|
|
ctrl->flags = 0;
|
|
break;
|
|
case V4L2_CID_SATURATION:
|
|
ctrl->type = V4L2_CTRL_TYPE_INTEGER;
|
|
strncpy(ctrl->name, "Saturation", sizeof(ctrl->name));
|
|
ctrl->minimum = 0;
|
|
ctrl->maximum = 255;
|
|
ctrl->step = 1;
|
|
ctrl->default_value = 128;
|
|
ctrl->flags = 0;
|
|
break;
|
|
case V4L2_CID_HUE:
|
|
ctrl->type = V4L2_CTRL_TYPE_INTEGER;
|
|
strncpy(ctrl->name, "Hue", sizeof(ctrl->name));
|
|
ctrl->minimum = 0;
|
|
ctrl->maximum = 255;
|
|
ctrl->step = 1;
|
|
ctrl->default_value = 128;
|
|
ctrl->flags = 0;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_S_CTRL:
|
|
{
|
|
struct v4l2_control *ctrl = arg;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_BRIGHTNESS:
|
|
if (ctrl->value > 255)
|
|
dec->brightness = 255;
|
|
else if (ctrl->value < 0)
|
|
dec->brightness = 0;
|
|
else
|
|
dec->brightness = ctrl->value;
|
|
write_reg(client, 0x12, dec->brightness, dec->channel);
|
|
break;
|
|
case V4L2_CID_CONTRAST:
|
|
if (ctrl->value > 255)
|
|
dec->contrast = 255;
|
|
else if (ctrl->value < 0)
|
|
dec->contrast = 0;
|
|
else
|
|
dec->contrast = ctrl->value;
|
|
write_reg(client, 0x11, dec->contrast, dec->channel);
|
|
break;
|
|
case V4L2_CID_SATURATION:
|
|
if (ctrl->value > 255)
|
|
dec->saturation = 255;
|
|
else if (ctrl->value < 0)
|
|
dec->saturation = 0;
|
|
else
|
|
dec->saturation = ctrl->value;
|
|
write_reg(client, 0x10, dec->saturation, dec->channel);
|
|
break;
|
|
case V4L2_CID_HUE:
|
|
if (ctrl->value > 255)
|
|
dec->hue = 255;
|
|
else if (ctrl->value < 0)
|
|
dec->hue = 0;
|
|
else
|
|
dec->hue = ctrl->value;
|
|
write_reg(client, 0x0f, dec->hue, dec->channel);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_G_CTRL:
|
|
{
|
|
struct v4l2_control *ctrl = arg;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_BRIGHTNESS:
|
|
ctrl->value = dec->brightness;
|
|
break;
|
|
case V4L2_CID_CONTRAST:
|
|
ctrl->value = dec->contrast;
|
|
break;
|
|
case V4L2_CID_SATURATION:
|
|
ctrl->value = dec->saturation;
|
|
break;
|
|
case V4L2_CID_HUE:
|
|
ctrl->value = dec->hue;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int wis_tw2804_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct i2c_adapter *adapter = client->adapter;
|
|
struct wis_tw2804 *dec;
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
return -ENODEV;
|
|
|
|
dec = kmalloc(sizeof(struct wis_tw2804), GFP_KERNEL);
|
|
if (dec == NULL)
|
|
return -ENOMEM;
|
|
|
|
dec->channel = -1;
|
|
dec->norm = V4L2_STD_NTSC;
|
|
dec->brightness = 128;
|
|
dec->contrast = 128;
|
|
dec->saturation = 128;
|
|
dec->hue = 128;
|
|
i2c_set_clientdata(client, dec);
|
|
|
|
printk(KERN_DEBUG "wis-tw2804: creating TW2804 at address %d on %s\n",
|
|
client->addr, adapter->name);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wis_tw2804_remove(struct i2c_client *client)
|
|
{
|
|
struct wis_tw2804 *dec = i2c_get_clientdata(client);
|
|
|
|
kfree(dec);
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id wis_tw2804_id[] = {
|
|
{ "wis_tw2804", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, wis_tw2804_id);
|
|
|
|
static struct i2c_driver wis_tw2804_driver = {
|
|
.driver = {
|
|
.name = "WIS TW2804 I2C driver",
|
|
},
|
|
.probe = wis_tw2804_probe,
|
|
.remove = wis_tw2804_remove,
|
|
.command = wis_tw2804_command,
|
|
.id_table = wis_tw2804_id,
|
|
};
|
|
|
|
module_i2c_driver(wis_tw2804_driver);
|
|
|
|
MODULE_LICENSE("GPL v2");
|