summaryrefslogtreecommitdiffstats
path: root/drivers/media/i2c/video-i2c.c (follow)
Commit message (Collapse)AuthorAgeFilesLines
* media: videobuf2: core: Rename min_buffers_needed field in vb2_queueBenjamin Gaignard2023-12-131-1/+1
| | | | | | | | | | | | Rename min_buffers_needed into min_queued_buffers and update the documentation about it. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> [hverkuil: Drop the change where min_queued_buffers + 1 buffers would be] [hverkuil: allocated. Now this patch only renames this field instead of making] [hverkuil: a functional change as well.] [hverkuil: Renamed 3 remaining min_buffers_needed occurrences.]
* media: i2c: video-i2c: Stop direct calls to queue num_buffers fieldBenjamin Gaignard2023-11-231-2/+3
| | | | | | | | | | | | | Use vb2_get_num_buffers() to avoid using queue num_buffers field directly. This allows us to change how the number of buffers is computed in the future. Fix the number of buffers computation at the same time. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com> CC: Matt Ranostay <matt.ranostay@konsulko.com> Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
* media: i2c: video-i2c: Convert enum->pointer for data in the match tablesBiju Das2023-09-271-8/+4
| | | | | | | | | | | | | | | Convert enum->pointer for data in the match tables, so that device_get_match_data() can do match against OF/ACPI/I2C tables, once i2c bus type match support added to it. Replace enum->struct *video_i2c_chip for data in the match table. Simplify the probe() by replacing device_get_match_data() and ID lookup for retrieving data by i2c_get_match_data(). Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
* media: Explicitly include correct DT includesRob Herring2023-07-191-1/+1
| | | | | | | | | | | | | | The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
* media: i2c: video: constify pointers to hwmon_channel_infoKrzysztof Kozlowski2023-05-251-1/+1
| | | | | | | | | | | Statically allocated array of pointers to hwmon_channel_info can be made const for safety. Reviewed-by: Matt Ranostay <matt.ranostay@konsulko.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
* media: Switch i2c drivers back to use .probe()Uwe Kleine-König2023-05-251-1/+1
| | | | | | | | | | | After commit b8a1a4cd5a98 ("i2c: Provide a temporary .probe_new() call-back type"), all drivers being converted to .probe_new() and then commit 03c835f498b5 ("i2c: Switch .probe() to not take an id parameter") convert back to (the new) .probe() to be able to eventually drop .probe_new() from struct i2c_driver. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
* media: i2c/video-i2c: Convert to i2c's .probe_new()Uwe Kleine-König2023-01-221-3/+3
| | | | | | | | | | .probe_new() doesn't get the i2c_device_id * parameter, so determine that explicitly in the probe function. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Matt Ranostay <matt.ranostay@konsulko.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
* i2c: Make remove callback return voidUwe Kleine-König2022-08-161-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The value returned by an i2c driver's remove function is mostly ignored. (Only an error message is printed if the value is non-zero that the error is ignored.) So change the prototype of the remove function to return no value. This way driver authors are not tempted to assume that passing an error to the upper layer is a good idea. All drivers are adapted accordingly. There is no intended change of behaviour, all callbacks were prepared to return 0 before. Reviewed-by: Peter Senna Tschudin <peter.senna@gmail.com> Reviewed-by: Jeremy Kerr <jk@codeconstruct.com.au> Reviewed-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Crt Mori <cmo@melexis.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Marek Behún <kabel@kernel.org> # for leds-turris-omnia Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Petr Machata <petrm@nvidia.com> # for mlxsw Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> # for surface3_power Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> # for bmc150-accel-i2c + kxcjk-1013 Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # for media/* + staging/media/* Acked-by: Miguel Ojeda <ojeda@kernel.org> # for auxdisplay/ht16k33 + auxdisplay/lcd2s Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # for versaclock5 Reviewed-by: Ajay Gupta <ajayg@nvidia.com> # for ucsi_ccg Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for iio Acked-by: Peter Rosin <peda@axentia.se> # for i2c-mux-*, max9860 Acked-by: Adrien Grassein <adrien.grassein@gmail.com> # for lontium-lt8912b Reviewed-by: Jean Delvare <jdelvare@suse.de> # for hwmon, i2c-core and i2c/muxes Acked-by: Corey Minyard <cminyard@mvista.com> # for IPMI Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com> # for drivers/power Acked-by: Krzysztof Hałasa <khalasa@piap.pl> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* media: i2c: video-i2c: Use GENMASK for masking bitsMoses Christopher Bollavarapu2022-05-171-1/+2
| | | | | | | | Replace 0x0380 with GENMASK(9, 7) to obtain 0b0000_0011_1000_0000 Signed-off-by: Moses Christopher Bollavarapu <mosescb.dev@gmail.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
* media: i2c: video-i2c: Replace constants with proper namesMoses Christopher Bollavarapu2022-05-171-2/+8
| | | | | | | | | | | | | Acc to MLX90640 datasheet: - 0x0400 represents the start of RAM address - 0x2400 represents the start of EEPROM address Reference: https://www.melexis.com/-/media/files/documents\ /datasheets/mlx90640-datasheet-melexis.pdf Signed-off-by: Moses Christopher Bollavarapu <mosescb.dev@gmail.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
* media: i2c: video-i2c: Move defines to the top of the fileMoses Christopher Bollavarapu2022-05-171-25/+25
| | | | | | | | | | Currently, the defines in this driver are after some structs and functions, it makes more sense to move them up to the top of the file, so that the constants can be named together with other defines. Signed-off-by: Moses Christopher Bollavarapu <mosescb.dev@gmail.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
* media: video-i2c: more precise intervals between framesSeongyong Park2021-09-301-9/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MLX90640 should ideally be working without a frame skip. In short, if a frame is skipped, then half of a frame loses correction information, having no way to retrieve its original compensation. This patch improves the timing in three ways: 1) Replaced schedule_timeout_interruptible() to usleep_range() The former "only ensures that it will sleep for at least schedule_delay (if not interrupted)", as pointed out by mchehab. As a result, the frame rate could lag behind than the actual capability of the hardware (Raspberry Pi would show a few Hz slower than set value) 2) Calculation based on us, not jiffies Jiffies usually has resolution of 100Hz, and possibly even cruder. MLX90640 can go up to 64Hz frame rate, which does not make sense to calculate the interval with aforementioned resolution. 3) Interval calculation based on the last frame's end time Using the start time of the current frame will probably make tiny bit of drift every time. This made more sense when I didn't realize 1), but it still makes sense without adding virtually any complexity, so this stays in. Signed-off-by: Seongyong Park <euphoriccatface@gmail.com> Acked-by: Matt Ranostay <matt.ranostay@konsulko.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
* media: i2c: video-i2c: use pm_runtime_resume_and_get()Mauro Carvalho Chehab2021-05-191-8/+4
| | | | | | | | | | Commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter") added pm_runtime_resume_and_get() in order to automatically handle dev->power.usage_count decrement on errors. Use the new API, in order to cleanup the error check logic. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
* media: i2c: video-i2c: fix build errors due to 'imply hwmon'Matt Ranostay2020-03-241-1/+1
| | | | | | | | | | | | | | | | Fix build fault when CONFIG_HWMON is a module, and CONFIG_VIDEO_I2C as builtin. This is due to 'imply hwmon' in the respective Kconfig. Issue build log: ld: drivers/media/i2c/video-i2c.o: in function `amg88xx_hwmon_init': video-i2c.c:(.text+0x2e1): undefined reference to `devm_hwmon_device_register_with_info Cc: rdunlap@infradead.org Fixes: acbea6798955 (media: video-i2c: add hwmon support for amg88xx) 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+huawei@kernel.org>
* media: media/i2c/video-i2c: rename VFL_TYPE_GRABBER to _VIDEOHans Verkuil2020-02-241-1/+1
| | | | | | | | | | 'GRABBER' is a weird name, all other types map to the /dev device names. Rename to 'VIDEO' to be consistent with the other types. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Cc: Matt Ranostay <matt.ranostay@konsulko.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
* media: video-i2c: use V4L2_FRACT_COMPAREAkinobu Mita2019-06-211-6/+2
| | | | | | | | | | | Use V4L2_FRACT_COMPARE to check whether two v4l2_fract structs are equal. Cc: Matt Ranostay <matt.ranostay@konsulko.com> Cc: Sakari Ailus <sakari.ailus@linux.intel.com> Cc: Hans Verkuil <hverkuil@xs4all.nl> 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: 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>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 11:07:19 +0100