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2025-08-13media: Reset file->private_data to NULL in v4l2_fh_del()Laurent Pinchart1-1/+1
Multiple drivers that use v4l2_fh and call v4l2_fh_del() manually reset the file->private_data pointer to NULL in their video device .release() file operation handler. Move the code to the v4l2_fh_del() function to avoid direct access to file->private_data in drivers. This requires adding a file pointer argument to the function. Changes to drivers have been generated with the following coccinelle semantic patch: @@ expression fh; identifier filp; identifier release; type ret; @@ ret release(..., struct file *filp, ...) { <... - filp->private_data = NULL; ... - v4l2_fh_del(fh); + v4l2_fh_del(fh, filp); ...> } @@ expression fh; identifier filp; identifier release; type ret; @@ ret release(..., struct file *filp, ...) { <... - v4l2_fh_del(fh); + v4l2_fh_del(fh, filp); ... - filp->private_data = NULL; ...> } @@ expression fh; identifier filp; identifier release; type ret; @@ ret release(..., struct file *filp, ...) { <... - v4l2_fh_del(fh); + v4l2_fh_del(fh, filp); ...> } Manual changes have been applied to Documentation/ to update the usage patterns, to drivers/media/v4l2-core/v4l2-fh.c to update the v4l2_fh_del() prototype and reset file->private_data, and to include/media/v4l2-fh.h to update the v4l2_fh_del() function prototype and its documentation. Additionally, white space issues have been fixed manually in drivers/usb/gadget/function/uvc_v4l2.c Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
2025-08-13media: Set file->private_data in v4l2_fh_add()Laurent Pinchart1-2/+1
All the drivers that use v4l2_fh and call v4l2_fh_add() manually store a pointer to the v4l2_fh instance in file->private_data in their video device .open() file operation handler. Move the code to the v4l2_fh_add() function to avoid direct access to file->private_data in drivers. This requires adding a file pointer argument to the function. Changes to drivers have been generated with the following coccinelle semantic patch: @@ expression fh; identifier filp; identifier open; type ret; @@ ret open(..., struct file *filp, ...) { <... - filp->private_data = fh; ... - v4l2_fh_add(fh); + v4l2_fh_add(fh, filp); ...> } @@ expression fh; identifier filp; identifier open; type ret; @@ ret open(..., struct file *filp, ...) { <... - v4l2_fh_add(fh); + v4l2_fh_add(fh, filp); ... - filp->private_data = fh; ...> } Manual changes have been applied to Documentation/ to update the usage patterns, to drivers/media/v4l2-core/v4l2-fh.c to update the v4l2_fh_add() prototype set file->private_data, and to include/media/v4l2-fh.h to update the v4l2_fh_add() function prototype and its documentation. Additionally, white space issues have been fixed manually in drivers/media/platform/nvidia/tegra-vde/v4l2.c, drivers/media/platform/rockchip/rkvdec/rkvdec.c, drivers/media/v4l2-core/v4l2-fh.c and drivers/staging/most/video/video.c. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
2025-08-13media: Replace file->private_data access with custom functionsLaurent Pinchart2-16/+13
Accessing file->private_data manually to retrieve the v4l2_fh pointer is error-prone, as the field is a void * and will happily cast implicitly to any pointer type. Replace all remaining locations that read the v4l2_fh pointer directly from file->private_data and cast it to driver-specific file handle structures with driver-specific functions that use file_to_v4l2_fh() and perform the same cast. No functional change is intended, this only paves the way to remove direct accesses to file->private_data and make V4L2 drivers safer. Other accesses to the field will be addressed separately. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
2024-11-29Merge tag 'staging-6.13-rc1' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging driver updates from Greg KH: "Here is the big set of staging driver changes for 6.13-rc1. Lots of changes this merge cycle, drivers removed and drivers added. Highlights include: - removals of the following staging drivers due to no forward progress and no one having either the hardware or the time/energy to deal with them anymore: - fieldbus - gdm724x - olpc_dcon - rtl8712 - rts5208 - vt6655 - vt6656 If anyone has this hardware and wants to work on the drivers, it can be an easy revert to get them back. - addition of the gpib driver subsystem. Lots of drivers for really old and semi-old interfaces to lab equipments. We expect lots of churn in these drivers as they get cleaned up to "working" order. These were added at the request of a user and the maintainer/author of them is helping out with the effort - loads and loads of tiny coding style cleanups for almost all staging drivers. Too many to list, see the shortlog for details. All of these have been in linux-next for a very long time with no reported issues" * tag 'staging-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (216 commits) Staging: gpib: gpib_os.c - Remove unnecessary OOM message staging: gpib: avoid unintended sign extension staging: vchiq_debugfs: Use forward declarations staging: vchiq_core: Rectify header include for vchiq_dump_state() staging: vc04_services: Cleanup TODO entry staging: most: Remove TODO contact information staging: rtl8723bs: Remove TODO contact information staging: sm750fb: Remove TODO contact information staging: iio: Remove TODO file staging: greybus: uart: Fix atomicity violation in get_serial_info() staging: rtl8723bs: Remove unused function Efuse_GetCurrentSize staging: rtl8723bs: Remove unused function efuse_WordEnableDataRead staging: rtl8723bs: Remove function hal_EfusePgPacketWrite1ByteHeader staging: rtl8723bs: Remove function hal_EfusePgPacketWrite2ByteHeader staging: rtl8723bs: Remove unused function hal_EfusePgCheckAvailableAddr staging: rtl8723bs: Remove unused function hal_EfuseConstructPGPkt staging: rtl8723bs: Remove unused function hal_EfusePartialWriteCheck staging: rtl8723bs: Remove unused function hal_EfusePgPacketWriteHeader staging: rtl8723bs: Remove unused function hal_EfusePgPacketWriteData staging: rtl8723bs: Remove unused function Hal_EfusePgPacketWrite_BT ...
2024-10-28staging: media: drop vb2_ops_wait_prepare/finishHans Verkuil1-2/+0
Since commit 88785982a19d ("media: vb2: use lock if wait_prepare/finish are NULL") it is no longer needed to set the wait_prepare/finish vb2_ops callbacks as long as the lock field in vb2_queue is set. Since the vb2_ops_wait_prepare/finish callbacks already rely on that field, we can safely drop these callbacks. This simplifies the code and this is a step towards the goal of deleting these callbacks. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> # for meson/vdec Tested-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # drivers/staging/media/tegra-video/vi.c
2024-10-09staging: Switch back to struct platform_driver::remove()Sergio Paracuellos1-1/+1
After commit 0edb555a65d1 ("platform: Make platform_driver::remove() return void") .remove() is (again) the right callback to implement for platform drivers. Convert all staging drivers to use .remove(), with the eventual goal to drop struct platform_driver::remove_new(). As .remove() and .remove_new() have the same prototypes, conversion is done by just changing the structure member name in the driver initializer. Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> Link: https://lore.kernel.org/r/20241001085751.282113-1-sergio.paracuellos@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-08-31media: meson: vdec: hevc: Refactor vdec_hevc_start and vdec_hevc_stopRicardo Ribalda1-11/+32
Make a new function __vdec_hevc_start(), that does all the initialization, except the clock initialization for G12A and SM1. Factor out all the stop logic, except the clk_disable_unprepare(), to a new function __vdec_hevc_stop. This allows vdec_hevc_start() to explicitly celan-out the clock during the error-path. The following smatch warnings are fixed: drivers/staging/media/meson/vdec/vdec_hevc.c:227 vdec_hevc_start() warn: 'core->vdec_hevc_clk' from clk_prepare_enable() not released on lines: 227. drivers/staging/media/meson/vdec/vdec_hevc.c:227 vdec_hevc_start() warn: 'core->vdec_hevcf_clk' from clk_prepare_enable() not released on lines: 227. Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
2024-08-31media: meson: vdec_1: Refactor vdec_1_stop()Ricardo Ribalda1-4/+12
Factor out all the power off logic, except the clk_disable_unprepare(), to a new function __vdec_1_stop(). This allows vdec_1_start() to explicitly clean-out the clock during the error-path. The following smatch warning is fixed: drivers/staging/media/meson/vdec/vdec_1.c:239 vdec_1_start() warn: 'core->vdec_1_clk' from clk_prepare_enable() not released on lines: 239. Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
2024-08-09media: meson: vdec: add GXLX SoC platformChristian Hewitt3-0/+48
Add the GXLX SoC platform which is based on GXL but omits the VP9 codec. Signed-off-by: Christian Hewitt <christianshewitt@gmail.com> Acked-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
2024-02-05media: staging: meson: Fix kerneldocRicardo Ribalda1-1/+0
Remove documentation from missing field. Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
2023-12-13media: videobuf2: core: Rename min_buffers_needed field in vb2_queueBenjamin Gaignard1-3/+3
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.]
2023-11-23media: meson: vdec: Stop direct calls to queue num_buffers fieldBenjamin Gaignard1-6/+7
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. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com> Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com> CC: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2023-09-01Merge tag 'media/v6.6-1' of ↵Linus Torvalds1-0/+9
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - new i2c drivers: ds90ub913, ds90ub953, ds90ub960, dw9719, ds90ub913 - new Intel IVSC MEI drivers - some Mediatek platform drivers were moved to a common location - Intel atomisp2 driver is now working with the main ov2680 driver. Due to that, the atomisp2 ov2680 staging one was removed - the bttv driver was finally converted to videobuf2 framework. This was the last one upstream using videobuf version 1 core. We'll likely remove the old videobuf framework on 6.7 - lots of improvements at atomisp driver: it now works with normal I2C sensors. Several compile-mode dependecies to select between ISP2400 and ISP2401 are now solved in runtime - a new ipu-bridge logic was added to work with IVSC MEI drivers - venus driver gained better support for new VPU versions - the v4l core async framework has gained lots of improvements and cleanups - lots of other cleanups, improvements and driver fixes * tag 'media/v6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (358 commits) media: ivsc: Add ACPI dependency media: bttv: convert to vb2 media: bttv: use audio defaults for winfast2000 media: bttv: refactor bttv_set_dma() media: bttv: move vbi_skip/vbi_count out of buffer media: bttv: remove crop info from bttv_buffer media: bttv: remove tvnorm field from bttv_buffer media: bttv: remove format field from bttv_buffer media: bttv: move do_crop flag out of bttv_fh media: bttv: copy vbi_fmt from bttv_fh media: bttv: copy vid fmt/width/height from fh media: bttv: radio use v4l2_fh instead of bttv_fh media: bttv: replace BUG with WARN_ON media: bttv: use video_drvdata to get bttv media: i2c: rdacm21: Fix uninitialized value media: coda: Remove duplicated include media: vivid: fix the racy dev->radio_tx_rds_owner media: i2c: ccs: Check rules is non-NULL media: i2c: ds90ub960: Fix PLL config for 1200 MHz CSI rate media: i2c: ds90ub953: Fix use of uninitialized variables ...
2023-07-27staging: Explicitly include correct DT includesRob Herring2-2/+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> Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # tegra-video Acked-by: Parthiban Veerasooran <parthiban.veerasooran@microchip.com> Acked-by: Alex Elder <elder@linaro.org> Link: https://lore.kernel.org/r/20230714175002.4064428-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-07-25media: meson: vdec: Add MODULE_FIRMWARE macroJuerg Haefliger1-0/+9
The meson-vdec module loads firmware so add MODULE_FIRMWARE macros to provide that information via modinfo. Signed-off-by: Juerg Haefliger <juerg.haefliger@canonical.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
2023-04-15media: staging: media: meson: vdec: Convert to platform remove callback ↵Uwe Kleine-König1-4/+2
returning void The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is (mostly) ignored and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2023-02-08media: meson: vdec: remove redundant if statementBenjamin Roszak1-2/+1
Checking if sess->fmt_out->pixfmt is V4L2_PIX_FMT_VP9 was already done as a condition to enter the if statement where this additional check is made. Signed-off-by: Benjamin Roszak <benjamin545@gmail.com> Signed-off-by: Christian Hewitt <christianshewitt@gmail.com> Acked-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2022-11-25media: staging: media: meson: vdec: use min() for comparison and assignmentDeepak R Varma1-4/+3
Use of standard min() helper macro is preferred over using ternary operator for logical evaluation and value assignment. This issue is identified by coccicheck using the minmax.cocci file. Signed-off-by: Deepak R Varma <drv@mailo.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2022-10-24media: meson/vdec: always init coef_node_startHans Verkuil1-2/+1
It's hard for code analyzers to see that coef_node_start is always initialized (and actually hard for humans as well!). So change the last 'else if' to an 'else' so it is clear that coef_node_startis always set. This fixes a compile warning: drivers/staging/media/meson/vdec/codec_vp9.c:1689:41: warning: 'coef_node_start' may be used uninitialized [-Wmaybe-uninitialized] 1689 | coef_node_start = coef_node_start + 1; | ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~ drivers/staging/media/meson/vdec/codec_vp9.c:1551:19: note: 'coef_node_start' was declared here 1551 | int node, coef_node_start, coef_count_node_start; | ^~~~~~~~~~~~~~~ Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
2022-09-24media: meson: vdec: fix possible refcount leak in vdec_probe()Hangyu Hua1-0/+2
v4l2_device_unregister need to be called to put the refcount got by v4l2_device_register when vdec_probe fails or vdec_remove is called. Signed-off-by: Hangyu Hua <hbh25y@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2022-08-30media: meson: vdec: add missing clk_disable_unprepare on error in ↵Xu Qiang1-1/+5
vdec_hevc_start() Add the missing clk_disable_unprepare() before return from vdec_hevc_start() in the error handling case. Fixes: 823a7300340e (“media: meson: vdec: add common HEVC decoder support”) Signed-off-by: Xu Qiang <xuqiang36@huawei.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2022-03-18media: Kconfig: cleanup VIDEO_DEV dependenciesMauro Carvalho Chehab1-1/+1
media Kconfig has two entries associated to V4L API: VIDEO_DEV and VIDEO_V4L2. On Kernel 2.6.x, there were two V4L APIs, each one with its own flag. VIDEO_DEV were meant to: 1) enable Video4Linux and make its Kconfig options to appear; 2) it makes the Kernel build the V4L core. while VIDEO_V4L2 where used to distinguish between drivers that implement the newer API and drivers that implemented the former one. With time, such meaning changed, specially after the removal of all V4L version 1 drivers. At the current implementation, VIDEO_DEV only does (1): it enables the media options related to V4L, that now has: menu "Video4Linux options" visible if VIDEO_DEV source "drivers/media/v4l2-core/Kconfig" endmenu but it doesn't affect anymore the V4L core drivers. The rationale is that the V4L2 core has a "soft" dependency at the I2C bus, and now requires to select a number of other Kconfig options: config VIDEO_V4L2 tristate depends on (I2C || I2C=n) && VIDEO_DEV select RATIONAL select VIDEOBUF2_V4L2 if VIDEOBUF2_CORE default (I2C || I2C=n) && VIDEO_DEV In the past, merging them would be tricky, but it seems that it is now possible to merge those symbols, in order to simplify V4L dependencies. Let's keep VIDEO_DEV, as this one is used on some make *defconfig configurations. Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> # for meson-vdec & meson-ge2d Acked-by: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com> Acked-by: Łukasz Stelmach <l.stelmach@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2022-02-22drivers: meson: vdec: add VP9 support to GXMChristian Hewitt1-0/+12
VP9 support for GXM appears to have been missed from the original codec submission [0] but it works well, so let's add support. [0] https://github.com/torvalds/linux/commit/00c43088aa680989407b6afbda295f67b3f123f1 Signed-off-by: Christian Hewitt <christianshewitt@gmail.com> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
2022-01-28media: meson: vdec: potential dereference of null pointerJiasheng Jiang3-5/+14
As the possible failure of the kzalloc(), the 'new_ts' could be NULL pointer. Therefore, it should be better to check it in order to avoid the dereference of the NULL pointer. Also, the caller esparser_queue() needs to deal with the return value of the amvdec_add_ts(). Fixes: 876f123b8956 ("media: meson: vdec: bring up to compliance") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> Suggested-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2021-12-07media: replace setting of bytesused with vb2_set_plane_payloadDafna Hirschfeld1-5/+5
In many places the bytesused field of struct vb2_buffer is set directly. Replace that with the function call vb2_set_plane_payload Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2021-09-30media: staging/media/meson: vdec.h: fix kerneldoc warningsHans Verkuil3-5/+20
Fix a bunch of kernel-doc warnings: drivers/staging/media/meson/vdec/esparser.h:22: warning: Function parameter or member 'core' not described in 'esparser_queue_eos' drivers/staging/media/meson/vdec/esparser.h:22: warning: Function parameter or member 'data' not described in 'esparser_queue_eos' drivers/staging/media/meson/vdec/esparser.h:22: warning: Function parameter or member 'len' not described in 'esparser_queue_eos' drivers/staging/media/meson/vdec/esparser.h:28: warning: Function parameter or member 'work' not described in 'esparser_queue_all_src' drivers/staging/media/meson/vdec/vdec.h:92: warning: Function parameter or member 'vdec_hevcf_clk' not described in 'amvdec_core' drivers/staging/media/meson/vdec/vdec.h:92: warning: Function parameter or member 'vdev_dec' not described in 'amvdec_core' drivers/staging/media/meson/vdec/vdec.h:92: warning: Function parameter or member 'lock' not described in 'amvdec_core' drivers/staging/media/meson/vdec/vdec.h:141: warning: Function parameter or member 'resume' not described in 'amvdec_codec_ops' drivers/staging/media/meson/vdec/vdec.h:274: warning: Function parameter or member 'lock' not described in 'amvdec_session' drivers/staging/media/meson/vdec/vdec.h:274: warning: Function parameter or member 'sequence_out' not described in 'amvdec_session' drivers/staging/media/meson/vdec/vdec.h:274: warning: Function parameter or member 'num_dst_bufs' not described in 'amvdec_session' drivers/staging/media/meson/vdec/vdec.h:274: warning: Function parameter or member 'changed_format' not described in 'amvdec_session' drivers/staging/media/meson/vdec/vdec.h:274: warning: Function parameter or member 'last_offset' not described in 'amvdec_session' drivers/staging/media/meson/vdec/vdec.h:274: warning: Function parameter or member 'wrap_count' not described in 'amvdec_session' drivers/staging/media/meson/vdec/vdec.h:274: warning: Function parameter or member 'fw_idx_to_vb2_idx' not described in 'amvdec_session' drivers/staging/media/meson/vdec/vdec_helpers.h:59: warning: Function parameter or member 'tc' not described in 'amvdec_add_ts' drivers/staging/media/meson/vdec/vdec_helpers.h:59: warning: Function parameter or member 'flags' not described in 'amvdec_add_ts' Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2021-09-30media: Media: meson: vdec: Use devm_platform_ioremap_resource_byname()zhaoxiao1-5/+2
Use the devm_platform_ioremap_resource_byname() helper instead of calling platform_get_resource_byname() and devm_ioremap_resource() separately. Signed-off-by: zhaoxiao <long870912@gmail.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2021-06-02media: meson: vdec: remove redundant initialization of variable reg_curColin Ian King1-1/+1
The variable reg_cur is being initialized with a value that is never read, it is being updated later on. The assignment is redundant and can be removed. Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2021-04-09media: staging: media/meson: remove redundant dev_err callMuhammad Usama Anjum1-6/+2
devm_ioremap_resource() prints error message in itself. Remove the dev_err call to avoid redundant error message. Signed-off-by: Muhammad Usama Anjum <musamaanjum@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2021-03-22media: staging: media: meson: vdec: fix kernel-doc warningHans Verkuil1-3/+1
One comment used /** instead of /*, so it caused kernel-doc warnings. Just turn it into a regular comment. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Cc: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-12-03media: meson: vdec: add G12/SM1 to module descriptionChristian Hewitt1-1/+1
The meson vdec driver also supports Amlogic G12/SM1 hardware. Signed-off-by: Christian Hewitt <christianshewitt@gmail.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-08-28media: staging/media: drop vb2_queue_release()Hans Verkuil1-7/+1
This is only needed for drivers that do not use vb2_fop_release(). Note that vb2_queue_release() is *not* the counterpart of vb2_queue_init() as some drivers here seem to think. Also use vb2_video_unregister_device() to automatically stop streaming at unregister time for those drivers that set vdev->queue. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-05-05media: meson: vdec: enable mcrcc for VP9Maxime Jourdan1-0/+31
The motion compensation reference cache controller allows caching parts of reference frames for faster decoding. Fixes: 00c43088aa68 ("media: meson: vdec: add VP9 decoder support") Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-03-05media: meson: vdec: add VP9 decoder supportMaxime Jourdan7-1/+2209
This adds VP9 decoding for the Amlogic GXL, G12A & SM1 SoCs, using the commong "HEVC" HW decoder. For G12A & SM1, it uses the IOMMU support from the firmware. For 10bit decoding, the firmware can only decode in the proprietary Amlogic Framebuffer Compression format, but can output in 8bit NV12 buffer while writing the decoded frame. Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-03-05media: meson: vdec: add VP9 input supportMaxime Jourdan1-4/+146
Amlogic VP9 decoder requires an additional 16-byte payload before every frame header. The source buffer is updated in-place, then given to the Parser FIFO DMA. The FIFO DMA copies the blocks into the 16MiB parser ring buffer, then parses and copies the slice into the decoder "workspace". Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-03-05media: meson: vdec: add common HEVC decoder supportMaxime Jourdan6-2/+825
Add support for the HEVC & VP9 common decoder support, handling Amlogic GXBB, GXL, G12A and SM1 platforms. This handles the "HEVC" hw decoder used for HEVC and VP9, and will be using in the new H264 multi-instance decoder for G12A & SM1 platforms. Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-03-05media: meson: vdec: add helpers for lossless framebuffer compression buffersMaxime Jourdan2-0/+31
Add helpers to support the lossless framebuffer compression format that will be used in HEVC & VP9 decoders when decoding 10bit content for downsampling to 8bit NV12 and later proper compressed buffer support. Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-03-05media: meson: vdec: align stride on 32 bytesNeil Armstrong2-7/+7
The HEVC/VP9 aligns the plane stride on 32, so align the planes stride for all codecs to 32 to satisfy HEVC/VP9 decoding using the "HEVC" HW. This fixes VP9 decoding of streams with following (not limited) widths: - 264 -288 - 350 - 352 - 472 - 480 - 528 - 600 - 720 - 800 - 848 - 1440 Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-03-05media: meson: vdec: add H.264 decoding supportMaxime Jourdan4-1/+561
Add support for the H264 compressed format (V4L2_PIX_FMT_H264). Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-03-05media: meson: vdec: bring up to complianceMaxime Jourdan6-117/+149
Add all the necessary bits to pass v4l2-compliance in stateful decoding mode. Mostly includes tracking the state of the decoder, allowing the OUTPUT queue to stream while the CAPTURE queue is inactive, handling resolution change events, draining with V4L2_DEC_CMD_STOP, copying more metadata from the src buffers to the dst buffers, etc. Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-02-24media: staging/media: rename VFL_TYPE_GRABBER to _VIDEOHans Verkuil1-1/+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> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2019-12-16media: meson: vdec: add sm1 platformNeil Armstrong4-7/+59
Add support for the Amlogic SM1 platform for the current MPEG1 & MPEG2 support. The SM1 family, very close to the G12A SoCs, has a slighly different power management control, thus needing a separate compatible and family id. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2019-12-16media: meson: vdec: add g12a platformMaxime Jourdan4-2/+44
Add support for the G12A platform by: - adding the G12A codec support, here MPEG1 & MPEG2 - getting the new hevcf clock for the upcoming HEVC/VP9 decoding support Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2019-12-13media: meson: add missing allocation failure check on new_bufColin Ian King1-0/+2
Currently if the allocation of new_buf fails then a null pointer dereference occurs when assiging new_buf->vb. Avoid this by returning early on a memory allocation failure as there is not much more can be done at this point. Addresses-Coverity: ("Dereference null return") Fixes: 3e7f51bd9607 ("media: meson: add v4l2 m2m video decoder driver") Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2019-07-30staging: Remove dev_err() usage after platform_get_irq()Stephen Boyd1-3/+1
We don't need dev_err() messages when platform_get_irq() fails now that platform_get_irq() prints an error message itself when something goes wrong. Let's remove these prints with a simple semantic patch. // <smpl> @@ expression ret; struct platform_device *E; @@ ret = ( platform_get_irq(E, ...) | platform_get_irq_byname(E, ...) ); if ( \( ret < 0 \| ret <= 0 \) ) { ( -if (ret != -EPROBE_DEFER) -{ ... -dev_err(...); -... } | ... -dev_err(...); ) ... } // </smpl> While we're here, remove braces on if statements that only have one statement (manually). Signed-off-by: Stephen Boyd <swboyd@chromium.org> Link: https://lore.kernel.org/r/20190730181557.90391-43-swboyd@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-21media: staging: media: meson: remove redundant initialization of mpeg12Colin Ian King1-1/+1
The pointer mpeg12 is being initialized however that value is never read and mpeg12 is being re-assigned almost immediately afterwards. Remove the redundant initialization. Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Maxime Jourdan <mjourdan@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-06-12media: meson: vdec: Add missing kthread.hYueHaibing1-0/+1
Fix building error: of function kthread_should_stop; did you mean thread_saved_sp? [-Werror=implicit-function-declaration] Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Maxime Jourdan <mjourdan@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-06-11media: meson: add v4l2 m2m video decoder driverMaxime Jourdan16-0/+2977
Amlogic SoCs feature a powerful video decoder unit able to decode many formats, with a performance of usually up to 4k60. This is a driver for this IP that is based around the v4l2 m2m framework. It features decoding for: - MPEG 1 - MPEG 2 Supported SoCs are: GXBB (S905), GXL (S905X/W/D), GXM (S912) There is also a hardware bitstream parser (ESPARSER) that is handled here. Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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