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path: root/drivers/media/video/saa7127.c
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Diffstat (limited to 'drivers/media/video/saa7127.c')
-rw-r--r--drivers/media/video/saa7127.c43
1 files changed, 27 insertions, 16 deletions
diff --git a/drivers/media/video/saa7127.c b/drivers/media/video/saa7127.c
index 79d11a658bdf..d0e83fe0ff51 100644
--- a/drivers/media/video/saa7127.c
+++ b/drivers/media/video/saa7127.c
@@ -666,7 +666,6 @@ static int saa7127_probe(struct i2c_client *client,
{
struct saa7127_state *state;
struct v4l2_sliced_vbi_data vbi = { 0, 0, 0, 0 }; /* set to disabled */
- int read_result = 0;
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
@@ -710,20 +709,29 @@ static int saa7127_probe(struct i2c_client *client,
saa7127_set_input_type(client, SAA7127_INPUT_TYPE_NORMAL);
saa7127_set_video_enable(client, 1);
- /* Detect if it's an saa7129 */
- read_result = saa7127_read(client, SAA7129_REG_FADE_KEY_COL2);
- saa7127_write(client, SAA7129_REG_FADE_KEY_COL2, 0xaa);
- if (saa7127_read(client, SAA7129_REG_FADE_KEY_COL2) == 0xaa) {
- v4l_info(client, "saa7129 found @ 0x%x (%s)\n",
- client->addr << 1, client->adapter->name);
- saa7127_write(client, SAA7129_REG_FADE_KEY_COL2, read_result);
- saa7127_write_inittab(client, saa7129_init_config_extra);
- state->ident = V4L2_IDENT_SAA7129;
- } else {
- v4l_info(client, "saa7127 found @ 0x%x (%s)\n",
- client->addr << 1, client->adapter->name);
- state->ident = V4L2_IDENT_SAA7127;
+ if (id->driver_data) { /* Chip type is already known */
+ state->ident = id->driver_data;
+ } else { /* Needs detection */
+ int read_result;
+
+ /* Detect if it's an saa7129 */
+ read_result = saa7127_read(client, SAA7129_REG_FADE_KEY_COL2);
+ saa7127_write(client, SAA7129_REG_FADE_KEY_COL2, 0xaa);
+ if (saa7127_read(client, SAA7129_REG_FADE_KEY_COL2) == 0xaa) {
+ saa7127_write(client, SAA7129_REG_FADE_KEY_COL2,
+ read_result);
+ state->ident = V4L2_IDENT_SAA7129;
+ strlcpy(client->name, "saa7129", I2C_NAME_SIZE);
+ } else {
+ state->ident = V4L2_IDENT_SAA7127;
+ strlcpy(client->name, "saa7127", I2C_NAME_SIZE);
+ }
}
+
+ v4l_info(client, "%s found @ 0x%x (%s)\n", client->name,
+ client->addr << 1, client->adapter->name);
+ if (state->ident == V4L2_IDENT_SAA7129)
+ saa7127_write_inittab(client, saa7129_init_config_extra);
return 0;
}
@@ -740,7 +748,11 @@ static int saa7127_remove(struct i2c_client *client)
/* ----------------------------------------------------------------------- */
static struct i2c_device_id saa7127_id[] = {
- { "saa7127", 0 },
+ { "saa7127_auto", 0 }, /* auto-detection */
+ { "saa7126", V4L2_IDENT_SAA7127 },
+ { "saa7127", V4L2_IDENT_SAA7127 },
+ { "saa7128", V4L2_IDENT_SAA7129 },
+ { "saa7129", V4L2_IDENT_SAA7129 },
{ }
};
MODULE_DEVICE_TABLE(i2c, saa7127_id);
@@ -753,4 +765,3 @@ static struct v4l2_i2c_driver_data v4l2_i2c_data = {
.remove = saa7127_remove,
.id_table = saa7127_id,
};
-