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-rw-r--r--drivers/media/video/em28xx/em28xx-cards.c44
-rw-r--r--drivers/media/video/em28xx/em28xx-i2c.c2
2 files changed, 45 insertions, 1 deletions
diff --git a/drivers/media/video/em28xx/em28xx-cards.c b/drivers/media/video/em28xx/em28xx-cards.c
index 01fbb7d2e56..8366c521921 100644
--- a/drivers/media/video/em28xx/em28xx-cards.c
+++ b/drivers/media/video/em28xx/em28xx-cards.c
@@ -58,6 +58,8 @@ static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
module_param_array(card, int, NULL, 0444);
MODULE_PARM_DESC(card, "card type");
+#define MT9V011_VERSION 0x8243
+
/* Bitmask marking allocated devices from 0 to EM28XX_MAXBOARDS */
static unsigned long em28xx_devused;
@@ -1702,6 +1704,46 @@ static inline void em28xx_set_model(struct em28xx *dev)
EM28XX_I2C_FREQ_100_KHZ;
}
+/* HINT method: webcam I2C chips
+ *
+ * This method work for webcams with Micron sensors
+ */
+static int em28xx_hint_sensor(struct em28xx *dev)
+{
+ int rc;
+ char *sensor_name;
+ unsigned char cmd;
+ __be16 version_be;
+ u16 version;
+
+ if (dev->model != EM2820_BOARD_UNKNOWN)
+ return 0;
+
+ dev->i2c_client.addr = 0xba >> 1;
+ cmd = 0;
+ i2c_master_send(&dev->i2c_client, &cmd, 1);
+ rc = i2c_master_recv(&dev->i2c_client, (char *)&version_be, 2);
+ if (rc != 2)
+ return -EINVAL;
+
+ version = be16_to_cpu(version_be);
+
+ switch (version) {
+ case MT9V011_VERSION:
+ dev->model = EM2820_BOARD_SILVERCREST_WEBCAM;
+ sensor_name = "mt9v011";
+ break;
+ default:
+ printk("Unknown Sensor 0x%04x\n", be16_to_cpu(version));
+ return -EINVAL;
+ }
+
+ em28xx_errdev("Sensor is %s, assuming that webcam is %s\n",
+ sensor_name, em28xx_boards[dev->model].name);
+
+ return 0;
+}
+
/* Since em28xx_pre_card_setup() requires a proper dev->model,
* this won't work for boards with generic PCI IDs
*/
@@ -2368,6 +2410,8 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
return errCode;
}
+ em28xx_hint_sensor(dev);
+
/* Do board specific init and eeprom reading */
em28xx_card_setup(dev);
diff --git a/drivers/media/video/em28xx/em28xx-i2c.c b/drivers/media/video/em28xx/em28xx-i2c.c
index 2c86fcf089f..27e33a287df 100644
--- a/drivers/media/video/em28xx/em28xx-i2c.c
+++ b/drivers/media/video/em28xx/em28xx-i2c.c
@@ -483,7 +483,7 @@ static char *i2c_devs[128] = {
[0xa0 >> 1] = "eeprom",
[0xb0 >> 1] = "tda9874",
[0xb8 >> 1] = "tvp5150a",
- [0xba >> 1] = "tvp5150a",
+ [0xba >> 1] = "webcam sensor or tvp5150a",
[0xc0 >> 1] = "tuner (analog)",
[0xc2 >> 1] = "tuner (analog)",
[0xc4 >> 1] = "tuner (analog)",