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path: root/drivers/media/video/tda9840.c
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Diffstat (limited to 'drivers/media/video/tda9840.c')
-rw-r--r--drivers/media/video/tda9840.c188
1 files changed, 116 insertions, 72 deletions
diff --git a/drivers/media/video/tda9840.c b/drivers/media/video/tda9840.c
index 1c391f0328f..6afb7059502 100644
--- a/drivers/media/video/tda9840.c
+++ b/drivers/media/video/tda9840.c
@@ -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;
-
- switch (cmd) {
- case VIDIOC_S_TUNER: {
- struct v4l2_tuner *t = arg;
- int byte;
+ int byte;
- if (t->index)
- return -EINVAL;
+ 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);
+ 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;
}
- case VIDIOC_G_TUNER: {
- struct v4l2_tuner *t = arg;
- u8 byte;
+ v4l2_dbg(1, debug, sd, "TDA9840_DETECT: byte: 0x%02x\n", byte);
+ switch (byte & 0x60) {
+ case 0x00:
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 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 long tda9840_ioctl(struct v4l2_subdev *sd, unsigned cmd, void *arg)
+{
+ int byte;
+
+ switch (cmd) {
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,
};
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-18 06:28:49 +0000