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V4L/DVB (9965): tda9840: convert to v4l2_subdev. 

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2008-12-18 13:21:57 -03:00 committed by Mauro Carvalho Chehab
parent d531305ae1
commit 973909e816
1 changed files with 124 additions and 80 deletions
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204
drivers/media/video/tda9840.c
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@ -29,7 +29,7 @@
#include <linux/module.h>
#include <linux/ioctl.h>
#include <linux/i2c.h>
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
#include <media/v4l2-i2c-drv-legacy.h>
#include "tda9840.h"
@ -62,85 +62,89 @@ static unsigned short normal_i2c[] = { I2C_ADDR_TDA9840, I2C_CLIENT_END };
/* magic definition of all other variables and things */
I2C_CLIENT_INSMOD;
static void tda9840_write(struct i2c_client *client, u8 reg, u8 val)
static void tda9840_write(struct v4l2_subdev *sd, u8 reg, u8 val)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
if (i2c_smbus_write_byte_data(client, reg, val))
v4l_dbg(1, debug, client, "error writing %02x to %02x\n",
v4l2_dbg(1, debug, sd, "error writing %02x to %02x\n",
val, reg);
}
static int tda9840_command(struct i2c_client *client, unsigned cmd, void *arg)
static int tda9840_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *t)
{
int byte = *(int *)arg;
int byte;
if (t->index)
return -EINVAL;
switch (t->audmode) {
case V4L2_TUNER_MODE_STEREO:
byte = TDA9840_SET_STEREO;
break;
case V4L2_TUNER_MODE_LANG1_LANG2:
byte = TDA9840_SET_BOTH;
break;
case V4L2_TUNER_MODE_LANG1:
byte = TDA9840_SET_LANG1;
break;
case V4L2_TUNER_MODE_LANG2:
byte = TDA9840_SET_LANG2;
break;
default:
byte = TDA9840_SET_MONO;
break;
}
v4l2_dbg(1, debug, sd, "TDA9840_SWITCH: 0x%02x\n", byte);
tda9840_write(sd, SWITCH, byte);
return 0;
}
static int tda9840_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *t)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
u8 byte;
t->rxsubchans = V4L2_TUNER_SUB_MONO;
if (1 != i2c_master_recv(client, &byte, 1)) {
v4l2_dbg(1, debug, sd,
"i2c_master_recv() failed\n");
return -EIO;
}
if (byte & 0x80) {
v4l2_dbg(1, debug, sd,
"TDA9840_DETECT: register contents invalid\n");
return -EINVAL;
}
v4l2_dbg(1, debug, sd, "TDA9840_DETECT: byte: 0x%02x\n", byte);
switch (byte & 0x60) {
case 0x00:
t->rxsubchans = V4L2_TUNER_SUB_MONO;
break;
case 0x20:
t->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
break;
case 0x40:
t->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_MONO;
break;
default: /* Incorrect detect */
t->rxsubchans = V4L2_TUNER_MODE_MONO;
break;
}
return 0;
}
static int tda9840_ioctl(struct v4l2_subdev *sd, unsigned cmd, void *arg)
{
int byte;
switch (cmd) {
case VIDIOC_S_TUNER: {
struct v4l2_tuner *t = arg;
int byte;
if (t->index)
return -EINVAL;
switch (t->audmode) {
case V4L2_TUNER_MODE_STEREO:
byte = TDA9840_SET_STEREO;
break;
case V4L2_TUNER_MODE_LANG1_LANG2:
byte = TDA9840_SET_BOTH;
break;
case V4L2_TUNER_MODE_LANG1:
byte = TDA9840_SET_LANG1;
break;
case V4L2_TUNER_MODE_LANG2:
byte = TDA9840_SET_LANG2;
break;
default:
byte = TDA9840_SET_MONO;
break;
}
v4l_dbg(1, debug, client, "TDA9840_SWITCH: 0x%02x\n", byte);
tda9840_write(client, SWITCH, byte);
break;
}
case VIDIOC_G_TUNER: {
struct v4l2_tuner *t = arg;
u8 byte;
t->rxsubchans = V4L2_TUNER_SUB_MONO;
if (1 != i2c_master_recv(client, &byte, 1)) {
v4l_dbg(1, debug, client,
"i2c_master_recv() failed\n");
return -EIO;
}
if (byte & 0x80) {
v4l_dbg(1, debug, client,
"TDA9840_DETECT: register contents invalid\n");
return -EINVAL;
}
v4l_dbg(1, debug, client, "TDA9840_DETECT: byte: 0x%02x\n", byte);
switch (byte & 0x60) {
case 0x00:
t->rxsubchans = V4L2_TUNER_SUB_MONO;
break;
case 0x20:
t->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
break;
case 0x40:
t->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_MONO;
break;
default: /* Incorrect detect */
t->rxsubchans = V4L2_TUNER_MODE_MONO;
break;
}
break;
}
case TDA9840_LEVEL_ADJUST:
v4l_dbg(1, debug, client, "TDA9840_LEVEL_ADJUST: %d\n", byte);
byte = *(int *)arg;
v4l2_dbg(1, debug, sd, "TDA9840_LEVEL_ADJUST: %d\n", byte);
/* check for correct range */
if (byte > 25 || byte < -20)
@ -152,11 +156,12 @@ static int tda9840_command(struct i2c_client *client, unsigned cmd, void *arg)
byte += 0x8;
else
byte = -byte;
tda9840_write(client, LEVEL_ADJUST, byte);
tda9840_write(sd, LEVEL_ADJUST, byte);
break;
case TDA9840_STEREO_ADJUST:
v4l_dbg(1, debug, client, "TDA9840_STEREO_ADJUST: %d\n", byte);
byte = *(int *)arg;
v4l2_dbg(1, debug, sd, "TDA9840_STEREO_ADJUST: %d\n", byte);
/* check for correct range */
if (byte > 25 || byte < -24)
@ -169,18 +174,41 @@ static int tda9840_command(struct i2c_client *client, unsigned cmd, void *arg)
else
byte = -byte;
tda9840_write(client, STEREO_ADJUST, byte);
tda9840_write(sd, STEREO_ADJUST, byte);
break;
default:
return -ENOIOCTLCMD;
}
return 0;
}
static int tda9840_command(struct i2c_client *client, unsigned cmd, void *arg)
{
return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
}
/* ----------------------------------------------------------------------- */
static const struct v4l2_subdev_core_ops tda9840_core_ops = {
.ioctl = tda9840_ioctl,
};
static const struct v4l2_subdev_tuner_ops tda9840_tuner_ops = {
.s_tuner = tda9840_s_tuner,
.g_tuner = tda9840_g_tuner,
};
static const struct v4l2_subdev_ops tda9840_ops = {
.core = &tda9840_core_ops,
.tuner = &tda9840_tuner_ops,
};
/* ----------------------------------------------------------------------- */
static int tda9840_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct v4l2_subdev *sd;
int result;
int byte;
@ -188,23 +216,38 @@ static int tda9840_probe(struct i2c_client *client,
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_READ_BYTE_DATA |
I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
return 0;
return -EIO;
v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name);
sd = kmalloc(sizeof(struct v4l2_subdev), GFP_KERNEL);
if (sd == NULL)
return -ENOMEM;
v4l2_i2c_subdev_init(sd, client, &tda9840_ops);
/* set initial values for level & stereo - adjustment, mode */
byte = 0;
result = tda9840_command(client, TDA9840_LEVEL_ADJUST, &byte);
result += tda9840_command(client, TDA9840_STEREO_ADJUST, &byte);
tda9840_write(client, SWITCH, TDA9840_SET_STEREO);
result = tda9840_ioctl(sd, TDA9840_LEVEL_ADJUST, &byte);
result |= tda9840_ioctl(sd, TDA9840_STEREO_ADJUST, &byte);
tda9840_write(sd, SWITCH, TDA9840_SET_STEREO);
if (result) {
v4l_dbg(1, debug, client, "could not initialize tda9840\n");
v4l2_dbg(1, debug, sd, "could not initialize tda9840\n");
kfree(sd);
return -ENODEV;
}
return 0;
}
static int tda9840_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
v4l2_device_unregister_subdev(sd);
kfree(sd);
return 0;
}
static int tda9840_legacy_probe(struct i2c_adapter *adapter)
{
/* Let's see whether this is a known adapter we can attach to.
@ -222,6 +265,7 @@ static struct v4l2_i2c_driver_data v4l2_i2c_data = {
.driverid = I2C_DRIVERID_TDA9840,
.command = tda9840_command,
.probe = tda9840_probe,
.remove = tda9840_remove,
.legacy_probe = tda9840_legacy_probe,
.id_table = tda9840_id,
};