media: i2c: ov9640: drop soc_camera code and switch to v4l2_async

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This patch removes the dependency on an obsoleted soc_camera from ov9640
driver and changes the code to be a standalone v4l2 async subdevice.
It also adds GPIO allocations for power and reset signals (as they are not
handled by soc_camera now).

The values for waiting on GPIOs (reset and power) settling down were taken
from the datasheet (> 1 ms after HW/SW reset). The upper limit was chosen
as an arbitrary value. Also one occurrence of mdelay() was changed to
msleep(). The delays were successfully tested on a real hardware.

The patch makes ov9640 sensor again compatible with the pxa_camera driver.

Signed-off-by: Petr Cvek <petrcvekcz@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

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This commit is contained in:

Petr Cvek 2018-12-13 10:39:13 -05:00 • committed by Mauro Carvalho Chehab

parent 57b0ad9ebe

commit 9f7e55d235

2 changed files with 55 additions and 23 deletions

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74

drivers/media/i2c/ov9640.c

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2

drivers/media/i2c/ov9640.h

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