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path: root/drivers/media/i2c/ov7670.c
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2023-04-11media: i2c: ov7670: Use the devm_clk_get_optional() helperChristophe JAILLET1-8/+3
Use devm_clk_get_optional() instead of hand writing it. This saves some loC and improves the semantic. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
2023-02-08media: i2c: ov7670: 0 instead of -EINVAL was returnedHans Verkuil1-1/+1
If the media bus is unsupported, then return -EINVAL. Instead it returned 'ret' which happened to be 0. This fixes a smatch warning: ov7670.c:1843 ov7670_parse_dt() warn: missing error code? 'ret' Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Fixes: 01b8444828fc ("media: v4l2: i2c: ov7670: Implement OF mbus configuration") Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2023-01-22media: i2c/ov7670: Convert to i2c's .probe_new()Uwe Kleine-König1-3/+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> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2022-10-27media: ov7670: Drop unused includeLinus Walleij1-1/+0
The driver includes the legacy <linux/gpio.h> header but does not use any symbols from it. Drop the include. Cc: Jonathan Corbet <corbet@lwn.net> Cc: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
2022-08-16i2c: Make remove callback return voidUwe Kleine-König1-2/+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>
2022-05-17media: ov7670: remove ov7670_power_off from ov7670_removeDongliang Mu1-1/+0
In ov7670_probe, it always invokes ov7670_power_off() no matter the execution is successful or failed. So we cannot invoke it agiain in ov7670_remove(). Fix this by removing ov7670_power_off from ov7670_remove. Fixes: 030f9f682e66 ("media: ov7670: control clock along with power") Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2021-06-17media: v4l2-subdev: add subdev-wide state structTomi Valkeinen1-8/+9
We have 'struct v4l2_subdev_pad_config' which contains configuration for a single pad used for the TRY functionality, and an array of those structs is passed to various v4l2_subdev_pad_ops. I was working on subdev internal routing between pads, and realized that there's no way to add TRY functionality for routes, which is not pad specific configuration. Adding a separate struct for try-route config wouldn't work either, as e.g. set-fmt needs to know the try-route configuration to propagate the settings. This patch adds a new struct, 'struct v4l2_subdev_state' (which at the moment only contains the v4l2_subdev_pad_config array) and the new struct is used in most of the places where v4l2_subdev_pad_config was used. All v4l2_subdev_pad_ops functions taking v4l2_subdev_pad_config are changed to instead take v4l2_subdev_state. The changes to drivers/media/v4l2-core/v4l2-subdev.c and include/media/v4l2-subdev.h were written by hand, and all the driver changes were done with the semantic patch below. The spatch needs to be applied to a select list of directories. I used the following shell commands to apply the spatch: dirs="drivers/media/i2c drivers/media/platform drivers/media/usb drivers/media/test-drivers/vimc drivers/media/pci drivers/staging/media" for dir in $dirs; do spatch -j8 --dir --include-headers --no-show-diff --in-place --sp-file v4l2-subdev-state.cocci $dir; done Note that Coccinelle chokes on a few drivers (gcc extensions?). With minor changes we can make Coccinelle run fine, and these changes can be reverted after spatch. The diff for these changes is: For drivers/media/i2c/s5k5baf.c: @@ -1481,7 +1481,7 @@ static int s5k5baf_set_selection(struct v4l2_subdev *sd, &s5k5baf_cis_rect, v4l2_subdev_get_try_crop(sd, cfg, PAD_CIS), v4l2_subdev_get_try_compose(sd, cfg, PAD_CIS), - v4l2_subdev_get_try_crop(sd, cfg, PAD_OUT) + v4l2_subdev_get_try_crop(sd, cfg, PAD_OUT), }; s5k5baf_set_rect_and_adjust(rects, rtype, &sel->r); return 0; For drivers/media/platform/s3c-camif/camif-capture.c: @@ -1230,7 +1230,7 @@ static int s3c_camif_subdev_get_fmt(struct v4l2_subdev *sd, *mf = camif->mbus_fmt; break; - case CAMIF_SD_PAD_SOURCE_C...CAMIF_SD_PAD_SOURCE_P: + case CAMIF_SD_PAD_SOURCE_C: /* crop rectangle at camera interface input */ mf->width = camif->camif_crop.width; mf->height = camif->camif_crop.height; @@ -1332,7 +1332,7 @@ static int s3c_camif_subdev_set_fmt(struct v4l2_subdev *sd, } break; - case CAMIF_SD_PAD_SOURCE_C...CAMIF_SD_PAD_SOURCE_P: + case CAMIF_SD_PAD_SOURCE_C: /* Pixel format can be only changed on the sink pad. */ mf->code = camif->mbus_fmt.code; mf->width = crop->width; The semantic patch is: // <smpl> // Change function parameter @@ identifier func; identifier cfg; @@ func(..., - struct v4l2_subdev_pad_config *cfg + struct v4l2_subdev_state *sd_state , ...) { <... - cfg + sd_state ...> } // Change function declaration parameter @@ identifier func; identifier cfg; type T; @@ T func(..., - struct v4l2_subdev_pad_config *cfg + struct v4l2_subdev_state *sd_state , ...); // Change function return value @@ identifier func; @@ - struct v4l2_subdev_pad_config + struct v4l2_subdev_state *func(...) { ... } // Change function declaration return value @@ identifier func; @@ - struct v4l2_subdev_pad_config + struct v4l2_subdev_state *func(...); // Some drivers pass a local pad_cfg for a single pad to a called function. Wrap it // inside a pad_state. @@ identifier func; identifier pad_cfg; @@ func(...) { ... struct v4l2_subdev_pad_config pad_cfg; + struct v4l2_subdev_state pad_state = { .pads = &pad_cfg }; <+... ( v4l2_subdev_call | sensor_call | isi_try_fse | isc_try_fse | saa_call_all ) (..., - &pad_cfg + &pad_state ,...) ...+> } // If the function uses fields from pad_config, access via state->pads @@ identifier func; identifier state; @@ func(..., struct v4l2_subdev_state *state , ...) { <... ( - state->try_fmt + state->pads->try_fmt | - state->try_crop + state->pads->try_crop | - state->try_compose + state->pads->try_compose ) ...> } // If the function accesses the filehandle, use fh->state instead @@ struct v4l2_subdev_fh *fh; @@ - fh->pad + fh->state @@ struct v4l2_subdev_fh fh; @@ - fh.pad + fh.state // Start of vsp1 specific @@ @@ struct vsp1_entity { ... - struct v4l2_subdev_pad_config *config; + struct v4l2_subdev_state *config; ... }; @@ symbol entity; @@ vsp1_entity_init(...) { ... entity->config = - v4l2_subdev_alloc_pad_config + v4l2_subdev_alloc_state (&entity->subdev); ... } @@ symbol entity; @@ vsp1_entity_destroy(...) { ... - v4l2_subdev_free_pad_config + v4l2_subdev_free_state (entity->config); ... } @exists@ identifier func =~ "(^vsp1.*)|(hsit_set_format)|(sru_enum_frame_size)|(sru_set_format)|(uif_get_selection)|(uif_set_selection)|(uds_enum_frame_size)|(uds_set_format)|(brx_set_format)|(brx_get_selection)|(histo_get_selection)|(histo_set_selection)|(brx_set_selection)"; symbol config; @@ func(...) { ... - struct v4l2_subdev_pad_config *config; + struct v4l2_subdev_state *config; ... } // End of vsp1 specific // Start of rcar specific @@ identifier sd; identifier pad_cfg; @@ rvin_try_format(...) { ... - struct v4l2_subdev_pad_config *pad_cfg; + struct v4l2_subdev_state *sd_state; ... - pad_cfg = v4l2_subdev_alloc_pad_config(sd); + sd_state = v4l2_subdev_alloc_state(sd); <... - pad_cfg + sd_state ...> - v4l2_subdev_free_pad_config(pad_cfg); + v4l2_subdev_free_state(sd_state); ... } // End of rcar specific // Start of rockchip specific @@ identifier func =~ "(rkisp1_rsz_get_pad_fmt)|(rkisp1_rsz_get_pad_crop)|(rkisp1_rsz_register)"; symbol rsz; symbol pad_cfg; @@ func(...) { + struct v4l2_subdev_state state = { .pads = rsz->pad_cfg }; ... - rsz->pad_cfg + &state ... } @@ identifier func =~ "(rkisp1_isp_get_pad_fmt)|(rkisp1_isp_get_pad_crop)"; symbol isp; symbol pad_cfg; @@ func(...) { + struct v4l2_subdev_state state = { .pads = isp->pad_cfg }; ... - isp->pad_cfg + &state ... } @@ symbol rkisp1; symbol isp; symbol pad_cfg; @@ rkisp1_isp_register(...) { + struct v4l2_subdev_state state = { .pads = rkisp1->isp.pad_cfg }; ... - rkisp1->isp.pad_cfg + &state ... } // End of rockchip specific // Start of tegra-video specific @@ identifier sd; identifier pad_cfg; @@ __tegra_channel_try_format(...) { ... - struct v4l2_subdev_pad_config *pad_cfg; + struct v4l2_subdev_state *sd_state; ... - pad_cfg = v4l2_subdev_alloc_pad_config(sd); + sd_state = v4l2_subdev_alloc_state(sd); <... - pad_cfg + sd_state ...> - v4l2_subdev_free_pad_config(pad_cfg); + v4l2_subdev_free_state(sd_state); ... } @@ identifier sd_state; @@ __tegra_channel_try_format(...) { ... struct v4l2_subdev_state *sd_state; <... - sd_state->try_crop + sd_state->pads->try_crop ...> } // End of tegra-video specific // </smpl> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-11-16media: ov7670: do not aggregate returnsTom Rix1-40/+56
Adding muliple status together loses individual failures. Check each status separately. Clean up some other returns for consistency. Fixed several coding style problems by running the file through checkpatch.pl --fix-inplace Signed-off-by: Tom Rix <trix@redhat.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2019-07-23media: ov7670: don't return ENOTTY if SUBDEV_API is not setHans Verkuil1-4/+2
If CONFIG_VIDEO_V4L2_SUBDEV_API is not set, then it is still possible to call set_fmt for V4L2_SUBDEV_FORMAT_TRY, the result is just not stored. So return 0 instead of -ENOTTY. Calling get_fmt with V4L2_SUBDEV_FORMAT_TRY should return -EINVAL instead of -ENOTTY, after all the get_fmt functionality is still present, just not supported for TRY. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 172Thomas Gleixner1-3/+1
Based on 1 normalized pattern(s): this file may be distributed under the terms of the gnu general public license version 2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 9 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070034.395589349@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-03-20media: ov7670: don't access registers when the device is powered offAkinobu Mita1-5/+26
Since commit 3d6a8fe25605 ("media: ov7670: hook s_power onto v4l2 core"), the device is actually powered off while the video stream is stopped. So now set_format and s_frame_interval could be called while the device is powered off, but these callbacks try to change the register settings at this time. The frame format and framerate will be restored right after power-up, so we can just postpone applying these changes at these callbacks if the device is not powered up. Fixes: 3d6a8fe25605 ("media: ov7670: hook s_power onto v4l2 core") Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Reviewed-by: Lubomir Rintel <lkundrak@v3.sk> Tested-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-03-20media: ov7670: restore default settings after power-upAkinobu Mita1-0/+1
Since commit 3d6a8fe25605 ("media: ov7670: hook s_power onto v4l2 core"), the device is actually powered off while the video stream is stopped. The frame format and framerate are restored right after power-up, but restoring the default register settings is forgotten. Fixes: 3d6a8fe25605 ("media: ov7670: hook s_power onto v4l2 core") Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Reviewed-by: Lubomir Rintel <lkundrak@v3.sk> Tested-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-01-25media: ov7670: control clock along with powerLubomir Rintel1-16/+14
This provides more power saving when the sensor is off. While at that, do the delay on power/clock enable even if the sensor driver itself doesn't control the GPIOs. This is required for the OLPC XO-1 platform, that lacks the proper power/reset properties in its DT, but needs the delay after the sensor is clocked up. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-01-25media: ov7670: hook s_power onto v4l2 coreLubomir Rintel1-6/+44
The commit 71862f63f351 ("media: ov7670: Add the ov7670_s_power function") added a power control routing. However, it was not good enough to use as a s_power() callback: it merely flipped on the power GPIOs without restoring the register settings. Fix this now and register an actual power callback. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-01-25media: ov7670: split register setting from set_framerate() logicLubomir Rintel1-12/+15
This will allow us to restore the last set frame rate after the device returns from a power off. [sakari.ailus@linux.intel.com>: Wrap a line over 80 characters] Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-01-25media: ov7670: split register setting from set_fmt() logicLubomir Rintel1-34/+46
This will allow us to restore the last set format after the device returns from a power off. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-01-25media: ov7670: Remove useless use of a ret variableSakari Ailus1-5/+1
Instead of assigning the return value to ret and then checking and returning it, just return the value to the caller directly. The success value is always 0. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-01-16media: v4l2: i2c: ov7670: Fix PLL bypass register valuesJacopo Mondi1-10/+6
The following commits: commit f6dd927f34d6 ("[media] media: ov7670: calculate framerate properly for ov7675") commit 04ee6d92047e ("[media] media: ov7670: add possibility to bypass pll for ov7675") introduced the ability to bypass PLL multiplier and use input clock (xvclk) as pixel clock output frequency for ov7675 sensor. PLL is bypassed using register DBLV[7:6], according to ov7670 and ov7675 sensor manuals. Macros used to set DBLV register seem wrong in the driver, as their values do not match what reported in the datasheet. Fix by changing DBLV_* macros to use bits [7:6] and set bits [3:0] to default 0x0a reserved value (according to datasheets). While at there, remove a write to DBLV register in "ov7675_set_framerate()" that over-writes the previous one to the same register that takes "info->pll_bypass" flag into account instead of setting PLL multiplier to 4x unconditionally. And, while at there, since "info->pll_bypass" is only used in set/get_framerate() functions used by ov7675 only, it is not necessary to check for the device id at probe time to make sure that when using ov7670 "info->pll_bypass" is set to false. Fixes: f6dd927f34d6 ("[media] media: ov7670: calculate framerate properly for ov7675") Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-11-23media: ov7670: support log_status ioctl and event interfaceAkinobu Mita1-1/+5
This adds log_status ioctl and event interface for ov7670's v4l2 controls. Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-10-05media: ov7670: make "xclk" clock optionalLubomir Rintel1-10/+17
When the "xclk" clock was added, it was made mandatory. This broke the driver on an OLPC plaform which doesn't know such clock. Make it optional. Tested on a OLPC XO-1 laptop. Fixes: 0a024d634cee ("[media] ov7670: get xclk") Cc: stable@vger.kernel.org # 4.11+ Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-10-04media: v4l: fwnode: Initialise the V4L2 fwnode endpoints to zeroSakari Ailus1-1/+1
Initialise the V4L2 fwnode endpoints to zero in all drivers using v4l2_fwnode_endpoint_parse(). This prepares for setting default endpoint flags as well as the bus type. Setting bus type to zero will continue to guess the bus among the guessable set (parallel, Bt.656 and CSI-2 D-PHY). Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Tested-by: Steve Longerbeam <steve_longerbeam@mentor.com> Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-07-24media: i2c: ov7670: Put ep fwnode after useJacopo Mondi1-4/+2
The just parsed endpoint fwnode has to be put after use. Currently this is done only in error handling path. Fix that by putting node unconditionally after use. Fixes: 01b8444828fc ("media: v4l2: i2c: ov7670: Implement OF mbus configuration") Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-02-23media: v4l2: i2c: ov7670: Implement OF mbus configurationJacopo Mondi1-14/+84
ov7670 driver supports two optional properties supplied through platform data, but currently does not support any standard video interface property. Add support through OF parsing for 2 generic properties (vsync and hsync polarities) and for one custom property already supported through platform data to suppress pixel clock output during horizontal blanking. While at there, check return value of register writes in set_fmt function and rationalize spacings. Signal polarities and pixel clock blanking verified through scope and image capture. Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-02-22media: convert g/s_parm to g/s_frame_interval in subdevsHans Verkuil1-14/+8
Convert all g/s_parm calls to g/s_frame_interval. This allows us to remove the g/s_parm ops since those are a duplicate of g/s_frame_interval. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-01-23media: entity: Add a nop variant of media_entity_cleanupSakari Ailus1-4/+0
Add nop variant of media_entity_cleanup. This allows calling media_entity_cleanup whether or not Media controller is enabled, simplifying driver code. Also drop #ifdefs on a few drivers around media_entity_cleanup(). Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-01-04media: replace all <spaces><tab> occurrencesMauro Carvalho Chehab1-19/+19
There are a lot of places where sequences of space/tabs are found. Get rid of all spaces before tabs. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-08media: ov7670: add V4L2_CID_TEST_PATTERN controlAkinobu Mita1-1/+45
The ov7670 has the test pattern generator features. This makes use of it through V4L2_CID_TEST_PATTERN control. Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-08media: ov7670: use v4l2_async_unregister_subdev()Akinobu Mita1-1/+1
The sub-device for ov7670 is registered by v4l2_async_register_subdev(). So it should be unregistered by v4l2_async_unregister_subdev() instead of v4l2_device_unregister_subdev(). Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> 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@s-opensource.com>
2017-10-27media: ov7670: Add the ov7670_s_power functionWenyou Yang1-5/+26
Add the ov7670_s_power function which is responsible for manipulating the power dowm mode through the PWDN pin and the reset operation through the RESET pin, and keep it powered at all times. [sakari.ailus@linux.intel.com: set pwdn_gpio direction only once] Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2017-10-27media: ov7670: Add the get_fmt callbackWenyou Yang1-1/+76
Add the get_fmt callback, also enable V4L2_SUBDEV_FL_HAS_DEVNODE flag to make this subdev has device node. Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2017-10-27media: ov7670: Add entity pads initializationWenyou Yang1-1/+20
Add the media entity pads initialization. Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2017-08-08media: ov7670: Check the return value from clk_prepare_enable()Fabio Estevam1-1/+3
clk_prepare_enable() may fail, so we should better check its return value and propagate it in the case of error. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-08-08media: ov7670: Return the real error codeFabio Estevam1-1/+1
When devm_clk_get() fails the real error code should be propagated, instead of always returning -EPROBE_DEFER. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-04-10[media] ov7670: add devicetree supportHans Verkuil1-2/+38
Add DT support. Use it to get the reset and pwdn pins (if there are any). Tested with one sensor requiring reset/pwdn and one sensor that doesn't have reset/pwdn pins. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-04-10[media] ov7670: get xclkHans Verkuil1-1/+17
Get the clock for this sensor. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-04-10[media] ov7670: fix g/s_parmHans Verkuil1-3/+1
Drop unnecesary memset. Drop the unnecessary extendedmode check and set the V4L2_CAP_TIMEPERFRAME capability. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-04-10[media] ov7670: call v4l2_async_register_subdevHans Verkuil1-3/+10
Add v4l2-async support for this driver. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2015-11-17[media] include/media: split I2C headers from V4L2 coreMauro Carvalho Chehab1-1/+1
Currently, include/media is messy, as it contains both the V4L2 core headers and some driver-specific headers on the same place. That makes harder to identify what core headers should be documented and what headers belong to I2C drivers that are included only by bridge/main drivers that would require the functions provided by them. Let's move those i2c specific files to its own subdirectory. The files to move were produced via the following script: mkdir include/media/i2c (cd include/media; for i in *.h; do n=`echo $i|sed s/.h$/.c/`; if [ -e ../../drivers/media/i2c/$n ]; then echo $i; git mv $i i2c/; fi; done) (cd include/media; for i in *.h; do n=`echo $i|sed s/.h$/.c/`; if [ -e ../../drivers/media/*/i2c/$n ]; then echo $i; git mv $i i2c/; fi; done) for i in include/media/*.h; do n=`basename $i`; (for j in $(git grep -l $n); do dirname $j; done)|sort|uniq|grep -ve '^.$' > list; num=$(wc -l list|cut -d' ' -f1); if [ $num == 1 ]; then if [ "`grep i2c list`" != "" ]; then git mv $i include/media/i2c; fi; fi; done And the references corrected via this script: MAIN_DIR="media/" PREV_DIR="media/" DIRS="i2c/" echo "Checking affected files" >&2 for i in $DIRS; do for j in $(find include/$MAIN_DIR/$i -type f -name '*.h'); do n=`basename $j` git grep -l $n done done|sort|uniq >files && ( echo "Handling files..." >&2; echo "for i in \$(cat files|grep -v Documentation); do cat \$i | \\"; ( cd include/$MAIN_DIR; for j in $DIRS; do for i in $(ls $j); do echo "perl -ne 's,(include [\\\"\\<])$PREV_DIR($i)([\\\"\\>]),\1$MAIN_DIR$j\2\3,; print \$_' |\\"; done; done; echo "cat > a && mv a \$i; done"; ); echo "Handling documentation..." >&2; echo "for i in MAINTAINERS \$(cat files); do cat \$i | \\"; ( cd include/$MAIN_DIR; for j in $DIRS; do for i in $(ls $j); do echo " perl -ne 's,include/$PREV_DIR($i)\b,include/$MAIN_DIR$j\1,; print \$_' |\\"; done; done; echo "cat > a && mv a \$i; done" ); ) >script && . ./script Merged Sakari Ailus patch that moves smiapp.h to include/media/i2c. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
2015-08-11[media] i2c: Drop owner assignment from i2c_driverKrzysztof Kozlowski1-1/+0
i2c_driver does not need to set an owner because i2c_register_driver() will set it. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-05-01[media] v4l2: replace try_mbus_fmt by set_fmtHans Verkuil1-11/+16
The try_mbus_fmt video op is a duplicate of the pad op. Replace all uses in sub-devices by the set_fmt() pad op. Since try_mbus_fmt and s_mbus_fmt both map to the set_fmt pad op (but with a different 'which' argument), this patch will replace both try_mbus_fmt and s_mbus_fmt by set_fmt. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kamil Debski <k.debski@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-05-01[media] v4l2: replace enum_mbus_fmt by enum_mbus_codeHans Verkuil1-5/+6
Replace all calls to the enum_mbus_fmt video op by the pad enum_mbus_code op and remove the duplicate video op. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Scott Jiang <scott.jiang.linux@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kamil Debski <k.debski@samsung.com> Acked-by: Prabhakar Lad <prabhakar.csengg@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-05-01[media] ov7670: use colorspace SRGB instead of JPEGHans Verkuil1-1/+1
Even though the format is Y'CbCr, the colorspace used by the sensor is almost certainly SRGB. The sensor is also not generating JPEG data, so it makes no sense to use V4L2_COLORSPACE_JPEG here. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-05-01[media] ov7670: check for valid width/height in ov7670_enum_frame_intervalHans Verkuil1-0/+23
The width and height should be checked in the enum_frame_interval op. This fixes a v4l2-compliance failure. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-05-01[media] ov7670: check read error also for REG_AECHH on ov7670_s_exp()Mauro Carvalho Chehab1-1/+1
ov7670_s_exp() checks read error for 2 registers: REG_COM1 and REG_COM8. But, although it uses the value latter, it doesn't check errors on REG_AECHH read. Yet, as it is doing a bitmask operation there, the read operation should succeed. So, fix the code to also check if this succeeded. This fixes this smatch report: drivers/media/i2c/ov7670.c:1366 ov7670_s_exp() warn: inconsistent indenting Compile-tested only. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Acked-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-03-23[media] v4l2-subdev: add support for the new enum_frame_interval 'which' fieldHans Verkuil1-14/+23
Support the new 'which' field in the enum_frame_interval ops. Most drivers do not need to be changed since they always returns the same enumeration regardless of the 'which' field. Tested for ov7670 and marvell-ccic on a OLPC XO-1 laptop. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Jonathan Corbet <corbet@lwn.net> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2014-11-14[media] i2c: Make use of media_bus_format enumBoris BREZILLON1-8/+8
In order to have subsytem agnostic media bus format definitions we've moved media bus definitions to include/uapi/linux/media-bus-format.h and prefixed values with MEDIA_BUS_FMT instead of V4L2_MBUS_FMT. Replace all references to the old definitions in i2c drivers. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2014-08-21[media] ov7670: Include media/v4l2-image-sizes.hAxel Lin1-13/+1
So we can remove the same defines in the driver code. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-05-13[media] V4L2: ov7670: fix a wrong index, potentially Oopsing the kernel from ↵Guennadi Liakhovetski1-1/+1
user-space Commit 75e2bdad8901a0b599e01a96229be922eef1e488 "ov7670: allow configuration of image size, clock speed, and I/O method" uses a wrong index to iterate an array. Apart from being wrong, it also uses an unchecked value from user-space, which can cause access to unmapped memory in the kernel, triggered by a normal desktop user with rights to use V4L2 devices. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Jonathan Corbet <corbet@lwn.net> Cc: stable@vger.kernel.org Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-06-17[media] media/i2c: remove g_chip_ident opHans Verkuil1-17/+0
This is no longer needed since the core now handles this through DBG_G_CHIP_INFO. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-05-27[media] media: i2c: remove duplicate checks for EPERM in dbg_g/s_registerLad, Prabhakar1-4/+0
This patch removes check for EPERM in dbg_g/s_register of subdevice drivers as this check is already performed by core. Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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