[media] af9035: override tuner for AVerMedia A835B devices

Tuner ID set into EEPROM is wrong, which causes driver to select
wrong tuner profile. That leads device non-working. Fix issue by
overriding known bad tuner IDs with suitable default value.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/drivers/media/usb/dvb-usb-v2/af9035.c b/drivers/media/usb/dvb-usb-v2/af9035.c
index 221af2b..75ec1c6 100644 (file)
--- a/drivers/media/usb/dvb-usb-v2/af9035.c
+++ b/drivers/media/usb/dvb-usb-v2/af9035.c
@@ -799,6 +799,25 @@ static int af9035_read_config(struct dvb_usb_device *d)
                addr += 0x10; /* shift for the 2nd tuner params */
        }
 
+       /*
+        * These AVerMedia devices has a bad EEPROM content :-(
+        * Override some wrong values here.
+        */
+       if (le16_to_cpu(d->udev->descriptor.idVendor) == USB_VID_AVERMEDIA) {
+               switch (le16_to_cpu(d->udev->descriptor.idProduct)) {
+               case USB_PID_AVERMEDIA_A835B_1835:
+               case USB_PID_AVERMEDIA_A835B_2835:
+               case USB_PID_AVERMEDIA_A835B_3835:
+                       dev_info(&d->udev->dev,
+                                "%s: overriding tuner from %02x to %02x\n",
+                                KBUILD_MODNAME, state->af9033_config[0].tuner,
+                                AF9033_TUNER_IT9135_60);
+
+                       state->af9033_config[0].tuner = AF9033_TUNER_IT9135_60;
+                       break;
+               }
+       }
+
 skip_eeprom:
        /* get demod clock */
        ret = af9035_rd_reg(d, 0x00d800, &tmp);