V4L/DVB (7004): cx23885: Ensure HVR1800 TDA8295A is reset fully on module load

Failure to do this means that a full system reboot is required if the
part hangs.

Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/drivers/media/video/cx23885/cx23885-cards.c b/drivers/media/video/cx23885/cx23885-cards.c
index aa0ddf2..901bebc 100644 (file)
--- a/drivers/media/video/cx23885/cx23885-cards.c
+++ b/drivers/media/video/cx23885/cx23885-cards.c
@@ -268,7 +268,13 @@ void cx23885_gpio_setup(struct cx23885_dev *dev)
                /* GPIO-15-18 cx23417 READY, CS, RD, WR */
                /* GPIO-19 IR_RX */
 
-               cx_set(GP0_IO, 0x00040004); /* Bring the tuner out of reset */
+               /* Force the TDA8295A into reset and back */
+               cx_set(GP0_IO, 0x00040004);
+               mdelay(20);
+               cx_clear(GP0_IO, 0x00000004);
+               mdelay(20);
+               cx_set(GP0_IO, 0x00040004);
+               mdelay(20);
                break;
        }
 }