271 lines
7.4 KiB
C
271 lines
7.4 KiB
C
/*
|
|
* upd64031A - NEC Electronics Ghost Reduction for NTSC in Japan
|
|
*
|
|
* 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., 675 Mass Ave, Cambridge, MA 02139, 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/v4l2-i2c-drv.h>
|
|
#include <media/upd64031a.h>
|
|
|
|
/* --------------------- read registers functions define -------------------- */
|
|
|
|
/* bit masks */
|
|
#define GR_MODE_MASK 0xc0
|
|
#define DIRECT_3DYCS_CONNECT_MASK 0xc0
|
|
#define SYNC_CIRCUIT_MASK 0xa0
|
|
|
|
/* -------------------------------------------------------------------------- */
|
|
|
|
MODULE_DESCRIPTION("uPD64031A driver");
|
|
MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static int debug;
|
|
module_param(debug, int, 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,
|
|
/* unused registers
|
|
R10, R11, R12, R13, R14,
|
|
R15, R16, R17,
|
|
*/
|
|
TOT_REGS
|
|
};
|
|
|
|
struct upd64031a_state {
|
|
struct v4l2_subdev sd;
|
|
u8 regs[TOT_REGS];
|
|
u8 gr_mode;
|
|
u8 direct_3dycs_connect;
|
|
u8 ext_comp_sync;
|
|
u8 ext_vert_sync;
|
|
};
|
|
|
|
static inline struct upd64031a_state *to_state(struct v4l2_subdev *sd)
|
|
{
|
|
return container_of(sd, struct upd64031a_state, sd);
|
|
}
|
|
|
|
static u8 upd64031a_init[] = {
|
|
0x00, 0xb8, 0x48, 0xd2, 0xe6,
|
|
0x03, 0x10, 0x0b, 0xaf, 0x7f,
|
|
0x00, 0x00, 0x1d, 0x5e, 0x00,
|
|
0xd0
|
|
};
|
|
|
|
/* ------------------------------------------------------------------------ */
|
|
|
|
static u8 upd64031a_read(struct v4l2_subdev *sd, u8 reg)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
u8 buf[2];
|
|
|
|
if (reg >= sizeof(buf))
|
|
return 0xff;
|
|
i2c_master_recv(client, buf, 2);
|
|
return buf[reg];
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------ */
|
|
|
|
static void upd64031a_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);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------ */
|
|
|
|
/* The input changed due to new input or channel changed */
|
|
static int upd64031a_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *freq)
|
|
{
|
|
struct upd64031a_state *state = to_state(sd);
|
|
u8 reg = state->regs[R00];
|
|
|
|
v4l2_dbg(1, debug, sd, "changed input or channel\n");
|
|
upd64031a_write(sd, R00, reg | 0x10);
|
|
upd64031a_write(sd, R00, reg & ~0x10);
|
|
return 0;
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------ */
|
|
|
|
static int upd64031a_s_routing(struct v4l2_subdev *sd,
|
|
u32 input, u32 output, u32 config)
|
|
{
|
|
struct upd64031a_state *state = to_state(sd);
|
|
u8 r00, r05, r08;
|
|
|
|
state->gr_mode = (input & 3) << 6;
|
|
state->direct_3dycs_connect = (input & 0xc) << 4;
|
|
state->ext_comp_sync =
|
|
(input & UPD64031A_COMPOSITE_EXTERNAL) << 1;
|
|
state->ext_vert_sync =
|
|
(input & UPD64031A_VERTICAL_EXTERNAL) << 2;
|
|
r00 = (state->regs[R00] & ~GR_MODE_MASK) | state->gr_mode;
|
|
r05 = (state->regs[R00] & ~SYNC_CIRCUIT_MASK) |
|
|
state->ext_comp_sync | state->ext_vert_sync;
|
|
r08 = (state->regs[R08] & ~DIRECT_3DYCS_CONNECT_MASK) |
|
|
state->direct_3dycs_connect;
|
|
upd64031a_write(sd, R00, r00);
|
|
upd64031a_write(sd, R05, r05);
|
|
upd64031a_write(sd, R08, r08);
|
|
return upd64031a_s_frequency(sd, NULL);
|
|
}
|
|
|
|
static int upd64031a_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_UPD64031A, 0);
|
|
}
|
|
|
|
static int upd64031a_log_status(struct v4l2_subdev *sd)
|
|
{
|
|
v4l2_info(sd, "Status: SA00=0x%02x SA01=0x%02x\n",
|
|
upd64031a_read(sd, 0), upd64031a_read(sd, 1));
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
static int upd64031a_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 = upd64031a_read(sd, reg->reg & 0xff);
|
|
reg->size = 1;
|
|
return 0;
|
|
}
|
|
|
|
static int upd64031a_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;
|
|
upd64031a_write(sd, reg->reg & 0xff, reg->val & 0xff);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static const struct v4l2_subdev_core_ops upd64031a_core_ops = {
|
|
.log_status = upd64031a_log_status,
|
|
.g_chip_ident = upd64031a_g_chip_ident,
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
.g_register = upd64031a_g_register,
|
|
.s_register = upd64031a_s_register,
|
|
#endif
|
|
};
|
|
|
|
static const struct v4l2_subdev_tuner_ops upd64031a_tuner_ops = {
|
|
.s_frequency = upd64031a_s_frequency,
|
|
};
|
|
|
|
static const struct v4l2_subdev_video_ops upd64031a_video_ops = {
|
|
.s_routing = upd64031a_s_routing,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops upd64031a_ops = {
|
|
.core = &upd64031a_core_ops,
|
|
.tuner = &upd64031a_tuner_ops,
|
|
.video = &upd64031a_video_ops,
|
|
};
|
|
|
|
/* ------------------------------------------------------------------------ */
|
|
|
|
/* i2c implementation */
|
|
|
|
static int upd64031a_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct upd64031a_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 upd64031a_state), GFP_KERNEL);
|
|
if (state == NULL)
|
|
return -ENOMEM;
|
|
sd = &state->sd;
|
|
v4l2_i2c_subdev_init(sd, client, &upd64031a_ops);
|
|
memcpy(state->regs, upd64031a_init, sizeof(state->regs));
|
|
state->gr_mode = UPD64031A_GR_ON << 6;
|
|
state->direct_3dycs_connect = UPD64031A_3DYCS_COMPOSITE << 4;
|
|
state->ext_comp_sync = state->ext_vert_sync = 0;
|
|
for (i = 0; i < TOT_REGS; i++)
|
|
upd64031a_write(sd, i, state->regs[i]);
|
|
return 0;
|
|
}
|
|
|
|
static int upd64031a_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 upd64031a_id[] = {
|
|
{ "upd64031a", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, upd64031a_id);
|
|
|
|
static struct v4l2_i2c_driver_data v4l2_i2c_data = {
|
|
.name = "upd64031a",
|
|
.probe = upd64031a_probe,
|
|
.remove = upd64031a_remove,
|
|
.id_table = upd64031a_id,
|
|
};
|