258 lines
6.7 KiB
C
258 lines
6.7 KiB
C
/*
|
|
* upd6408x - NEC Electronics 3-Dimensional Y/C separation driver
|
|
*
|
|
* 2003 by T.Adachi (tadachi@tadachi-net.com)
|
|
* 2003 by Takeru KOMORIYA <komoriya@paken.org>
|
|
* 2006 by 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., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
* 02110-1301, USA.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/videodev2.h>
|
|
#include <linux/slab.h>
|
|
#include <media/v4l2-device.h>
|
|
#include <media/v4l2-chip-ident.h>
|
|
#include <media/upd64083.h>
|
|
|
|
MODULE_DESCRIPTION("uPD64083 driver");
|
|
MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static int debug;
|
|
module_param(debug, bool, 0644);
|
|
|
|
MODULE_PARM_DESC(debug, "Debug level (0-1)");
|
|
|
|
|
|
enum {
|
|
R00 = 0, R01, R02, R03, R04,
|
|
R05, R06, R07, R08, R09,
|
|
R0A, R0B, R0C, R0D, R0E, R0F,
|
|
R10, R11, R12, R13, R14,
|
|
R15, R16,
|
|
TOT_REGS
|
|
};
|
|
|
|
struct upd64083_state {
|
|
struct v4l2_subdev sd;
|
|
u8 mode;
|
|
u8 ext_y_adc;
|
|
u8 regs[TOT_REGS];
|
|
};
|
|
|
|
static inline struct upd64083_state *to_state(struct v4l2_subdev *sd)
|
|
{
|
|
return container_of(sd, struct upd64083_state, sd);
|
|
}
|
|
|
|
/* Initial values when used in combination with the
|
|
NEC upd64031a ghost reduction chip. */
|
|
static u8 upd64083_init[] = {
|
|
0x1f, 0x01, 0xa0, 0x2d, 0x29, /* we use EXCSS=0 */
|
|
0x36, 0xdd, 0x05, 0x56, 0x48,
|
|
0x00, 0x3a, 0xa0, 0x05, 0x08,
|
|
0x44, 0x60, 0x08, 0x52, 0xf8,
|
|
0x53, 0x60, 0x10
|
|
};
|
|
|
|
/* ------------------------------------------------------------------------ */
|
|
|
|
static void upd64083_write(struct v4l2_subdev *sd, u8 reg, u8 val)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
u8 buf[2];
|
|
|
|
buf[0] = reg;
|
|
buf[1] = val;
|
|
v4l2_dbg(1, debug, sd, "write reg: %02x val: %02x\n", reg, val);
|
|
if (i2c_master_send(client, buf, 2) != 2)
|
|
v4l2_err(sd, "I/O error write 0x%02x/0x%02x\n", reg, val);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------ */
|
|
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
static u8 upd64083_read(struct v4l2_subdev *sd, u8 reg)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
u8 buf[7];
|
|
|
|
if (reg >= sizeof(buf))
|
|
return 0xff;
|
|
i2c_master_recv(client, buf, sizeof(buf));
|
|
return buf[reg];
|
|
}
|
|
#endif
|
|
|
|
/* ------------------------------------------------------------------------ */
|
|
|
|
static int upd64083_s_routing(struct v4l2_subdev *sd,
|
|
u32 input, u32 output, u32 config)
|
|
{
|
|
struct upd64083_state *state = to_state(sd);
|
|
u8 r00, r02;
|
|
|
|
if (input > 7 || (input & 6) == 6)
|
|
return -EINVAL;
|
|
state->mode = (input & 3) << 6;
|
|
state->ext_y_adc = (input & UPD64083_EXT_Y_ADC) << 3;
|
|
r00 = (state->regs[R00] & ~(3 << 6)) | state->mode;
|
|
r02 = (state->regs[R02] & ~(1 << 5)) | state->ext_y_adc;
|
|
upd64083_write(sd, R00, r00);
|
|
upd64083_write(sd, R02, r02);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
static int upd64083_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
if (!v4l2_chip_match_i2c_client(client, ®->match))
|
|
return -EINVAL;
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
reg->val = upd64083_read(sd, reg->reg & 0xff);
|
|
reg->size = 1;
|
|
return 0;
|
|
}
|
|
|
|
static int upd64083_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
if (!v4l2_chip_match_i2c_client(client, ®->match))
|
|
return -EINVAL;
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
upd64083_write(sd, reg->reg & 0xff, reg->val & 0xff);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int upd64083_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_UPD64083, 0);
|
|
}
|
|
|
|
static int upd64083_log_status(struct v4l2_subdev *sd)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
u8 buf[7];
|
|
|
|
i2c_master_recv(client, buf, 7);
|
|
v4l2_info(sd, "Status: SA00=%02x SA01=%02x SA02=%02x SA03=%02x "
|
|
"SA04=%02x SA05=%02x SA06=%02x\n",
|
|
buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static const struct v4l2_subdev_core_ops upd64083_core_ops = {
|
|
.log_status = upd64083_log_status,
|
|
.g_chip_ident = upd64083_g_chip_ident,
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
.g_register = upd64083_g_register,
|
|
.s_register = upd64083_s_register,
|
|
#endif
|
|
};
|
|
|
|
static const struct v4l2_subdev_video_ops upd64083_video_ops = {
|
|
.s_routing = upd64083_s_routing,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops upd64083_ops = {
|
|
.core = &upd64083_core_ops,
|
|
.video = &upd64083_video_ops,
|
|
};
|
|
|
|
/* ------------------------------------------------------------------------ */
|
|
|
|
/* i2c implementation */
|
|
|
|
static int upd64083_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct upd64083_state *state;
|
|
struct v4l2_subdev *sd;
|
|
int i;
|
|
|
|
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
return -EIO;
|
|
|
|
v4l_info(client, "chip found @ 0x%x (%s)\n",
|
|
client->addr << 1, client->adapter->name);
|
|
|
|
state = kmalloc(sizeof(struct upd64083_state), GFP_KERNEL);
|
|
if (state == NULL)
|
|
return -ENOMEM;
|
|
sd = &state->sd;
|
|
v4l2_i2c_subdev_init(sd, client, &upd64083_ops);
|
|
/* Initially assume that a ghost reduction chip is present */
|
|
state->mode = 0; /* YCS mode */
|
|
state->ext_y_adc = (1 << 5);
|
|
memcpy(state->regs, upd64083_init, TOT_REGS);
|
|
for (i = 0; i < TOT_REGS; i++)
|
|
upd64083_write(sd, i, state->regs[i]);
|
|
return 0;
|
|
}
|
|
|
|
static int upd64083_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
|
|
v4l2_device_unregister_subdev(sd);
|
|
kfree(to_state(sd));
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static const struct i2c_device_id upd64083_id[] = {
|
|
{ "upd64083", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, upd64083_id);
|
|
|
|
static struct i2c_driver upd64083_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "upd64083",
|
|
},
|
|
.probe = upd64083_probe,
|
|
.remove = upd64083_remove,
|
|
.id_table = upd64083_id,
|
|
};
|
|
|
|
static __init int init_upd64083(void)
|
|
{
|
|
return i2c_add_driver(&upd64083_driver);
|
|
}
|
|
|
|
static __exit void exit_upd64083(void)
|
|
{
|
|
i2c_del_driver(&upd64083_driver);
|
|
}
|
|
|
|
module_init(init_upd64083);
|
|
module_exit(exit_upd64083);
|