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path: root/drivers/media/i2c/video-i2c.c
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* media: video-i2c: add Melexis MLX90640 thermal cameraMatt Ranostay2019-01-211-1/+109
| | | | | | | | | | | | | Add initial support for MLX90640 thermal cameras which output an 32x24 greyscale pixel image along with 2 rows of coefficent data. Because of this the data outputed is really 32x26 and needs the two rows removed after using the coefficent information to generate processed images in userspace. Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
* media: video-i2c: check if chip struct has set_power functionMatt Ranostay2018-12-071-5/+17
| | | | | | | | | | | Not all future supported video chips will always have power management support, and so it is important to check before calling set_power() is defined. Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com> Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
* media: video-i2c: support runtime PMAkinobu Mita2018-12-071-2/+139
| | | | | | | | | | | | | | | | AMG88xx has a register for setting operating mode. This adds support runtime PM by changing the operating mode. The instruction for changing sleep mode to normal mode is from the reference specifications. https://docid81hrs3j1.cloudfront.net/medialibrary/2017/11/PANA-S-A0002141979-1.pdf Reviewed-by: Matt Ranostay <matt.ranostay@konsulko.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
* media: video-i2c: hwmon: constify vb2_ops structureJulia Lawall2018-11-231-1/+1
| | | | | | | | | | | | The vb2_ops structure can be const as it is only stored in the ops field of a vb2_queue structure and this field is const. Done with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Matt Ranostay <matt.ranostay@konsulko.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
* media: video-i2c: support changing frame intervalAkinobu Mita2018-11-231-12/+66
| | | | | | | | | | | | | | AMG88xx has a register for setting frame rate 1 or 10 FPS. This adds support changing frame interval. Reference specifications: https://docid81hrs3j1.cloudfront.net/medialibrary/2017/11/PANA-S-A0002141979-1.pdf Acked-by: Matt Ranostay <matt.ranostay@konsulko.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
* media: video-i2c: use i2c regmapAkinobu Mita2018-11-231-27/+41
| | | | | | | | | | | | Use regmap for i2c register access. This simplifies register accesses and chooses suitable access commands based on the functionality that the adapter supports. Acked-by: Matt Ranostay <matt.ranostay@konsulko.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
* media: video-i2c: avoid accessing released memory area when removing driverAkinobu Mita2018-11-231-5/+6
| | | | | | | | | | | | | | | | | | | | | The video device release() callback for video-i2c driver frees the whole struct video_i2c_data. If there is no user left for the video device when video_unregister_device() is called, the release callback is executed. However, in video_i2c_remove() some fields (v4l2_dev, lock, and queue_lock) in struct video_i2c_data are still accessed after video_unregister_device() is called. This fixes the use after free by moving the code from video_i2c_remove() to the release() callback. Fixes: 5cebaac60974 ("media: video-i2c: add video-i2c driver") Reviewed-by: Matt Ranostay <matt.ranostay@konsulko.com> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
* media: use strscpy() instead of strlcpy()Mauro Carvalho Chehab2018-09-111-4/+4
| | | | | | | | | | | The implementation of strscpy() is more robust and safer. That's now the recommended way to copy NUL terminated strings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
* media: video-i2c: hwmon: fix return value from amg88xx_hwmon_init()Matt Ranostay2018-07-271-1/+1
| | | | | | | | | PTR_ERR was making any pointer passed an error pointer, and should be replaced with PTR_ERR_OR_ZERO which checks if is an actual error condition. Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
* media: video-i2c: add hwmon support for amg88xxMatt Ranostay2018-07-251-0/+81
| | | | | | | | | | | AMG88xx has an on-board thermistor which is used for more accurate processing of its temperature readings from the 8x8 thermopile array Cc: linux-hwmon@vger.kernel.org Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
* media: video-i2c: get rid of two gcc warningsMauro Carvalho Chehab2018-05-041-2/+2
| | | | | | | | | | | | | After adding this driver, gcc complains with: drivers/media/i2c/video-i2c.c:55:1: warning: 'static' is not at beginning of declaration [-Wold-style-declaration] const static struct v4l2_fmtdesc amg88xx_format = { ^~~~~ drivers/media/i2c/video-i2c.c:59:1: warning: 'static' is not at beginning of declaration [-Wold-style-declaration] const static struct v4l2_frmsize_discrete amg88xx_size = { ^~~~~ Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
* media: video-i2c: add video-i2c driverMatt Ranostay2018-05-041-0/+564
There are several thermal sensors that only have a low-speed bus interface but output valid video data. This patchset enables support for the AMG88xx "Grid-Eye" sensor family. Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> [hans.verkuil@cisco.com: split up int ret = ...->xfer(); line] Signed-off-by: Hans Verkuil <hansverk@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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