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media: rdacm20: Enable GPIO1 explicitly

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[ Upstream commit 7fe1d4453f ]

The MAX9271 GPIO1 line that controls the sensor reset is by default
enabled after a serializer chip reset.

As rdacm20 does not go through an explicit serializer reset, make sure
GPIO1 is enabled to make the camera module driver more robust.

Fixes: 34009bffc1 ("media: i2c: Add RDACM20 driver")
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jacopo Mondi
2020-11-20 17:15:29 +01:00
committed by Greg Kroah-Hartman
parent 978649ab70
commit 4440b48617
1 changed files with 11 additions and 2 deletions
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13
drivers/media/i2c/rdacm20.c
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@@ -487,9 +487,18 @@ static int rdacm20_initialize(struct rdacm20_device *dev)
* Reset the sensor by cycling the OV10635 reset signal connected to the
* MAX9271 GPIO1 and verify communication with the OV10635.
*/
max9271_clear_gpios(dev->serializer, MAX9271_GPIO1OUT);
ret = max9271_enable_gpios(dev->serializer, MAX9271_GPIO1OUT);
if (ret)
return ret;
ret = max9271_clear_gpios(dev->serializer, MAX9271_GPIO1OUT);
if (ret)
return ret;
usleep_range(10000, 15000);
max9271_set_gpios(dev->serializer, MAX9271_GPIO1OUT);
ret = max9271_set_gpios(dev->serializer, MAX9271_GPIO1OUT);
if (ret)
return ret;
usleep_range(10000, 15000);
again: