V4L/DVB (8068): cx18: Add I2C slave reset via GPIO upon initialization

cx18: Add I2C slave reset via GPIO upon initialization.  One user,
Michael <msd4824@yahoo.com>, has reported this allows his HVR-1600 EEPROM to
be consistently recognized when using (long,) 100 msec delays.   The delays in
this commit are nominal (10 & 40 msec) and need testing/tuning on boards with
I2C problems to find the right values.

Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/media/video/cx18/cx18-cards.c b/drivers/media/video/cx18/cx18-cards.c
index c18865b0d6cc..bbf23fa459d6 100644
--- a/drivers/media/video/cx18/cx18-cards.c
+++ b/drivers/media/video/cx18/cx18-cards.c
@@ -82,6 +82,11 @@ static const struct cx18_card cx18_card_hvr1600_esmt = {
         },
         .gpio_init.initial_value = 0x3001,
         .gpio_init.direction = 0x3001,
+        .gpio_i2c_slave_reset = {
+                .active_lo_mask = 0x3001,
+                .msecs_asserted = 10,
+                .msecs_recovery = 40,
+        },
         .i2c = &cx18_i2c_std,
 };
 
@@ -122,6 +127,11 @@ static const struct cx18_card cx18_card_hvr1600_samsung = {
         },
         .gpio_init.initial_value = 0x3001,
         .gpio_init.direction = 0x3001,
+        .gpio_i2c_slave_reset = {
+                .active_lo_mask = 0x3001,
+                .msecs_asserted = 10,
+                .msecs_recovery = 40,
+        },
         .i2c = &cx18_i2c_std,
 };