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path: root/drivers/media/i2c/ov9640.c
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2019-06-21media: ov9640: Don't check for NULL on devm_gpiod_get return valuesSakari Ailus
devm_gpiod_get never returns NULL; therefore it's not necessary to check for that. PTR_ERR(NULL) also yields zero, which is confusing to smatch. Reported-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-01-16media: ov9640: Wrap long and unwrap short lines, align wrapped lines correctlySakari Ailus
Some little style fixup work. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-01-16media: i2c: ov9640: fix missing error handling in probePetr Cvek
Control handlers registration lacked error path with v4l2_ctrl_handler_free() call. Fix it by using goto to alread existing v4l2_ctrl_handler_free() call. 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>
2019-01-16media: i2c: ov9640: make array of supported formats constantPetr Cvek
An array which defines sensor's supported formats is not written anywhere, so it can be constant. 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>
2019-01-16media: i2c: ov9640: add space before return for better clarityPetr Cvek
Some returns were adjoined to unrelated code blocks. This patch adds a space inbetween. 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>
2019-01-16media: i2c: ov9640: change array index or length variables to unsignedPetr Cvek
The driver uses variables to store frame resolutions and to indexing various arrays. These should be unsigned. 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>
2019-01-16media: i2c: ov9640: add missing SPDX identifiersPetr Cvek
Add missing SPDX identifiers to .c and .h files of the sensor 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>
2019-01-16media: i2c: ov9640: drop soc_camera code and switch to v4l2_asyncPetr Cvek
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>
2019-01-16media: soc_camera: ov9640: move ov9640 out of soc_cameraPetr Cvek
Initial part of ov9640 transition from soc_camera subsystem to a standalone v4l2 subdevice. The soc_camera version seems to be used only in Palm Zire72 and in (the future) HTC Magician. On these two devices the support is broken as pxa_camera driver doesn't use soc_camera anymore. The other mentions from git grep are "TODOs" (in board-osk.c) or chip names for unsupported sensors on HW which doesn't use soc_camera at all (irelevant). Copy the driver files from soc_camera and mark the original ones in the Kconfig description as obsoleted. Add config option VIDEO_OV9640 to the build files in drivers/media/i2c. 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>