From f4cdf7ca9a1fdcca413157df19753f388a5a224e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 19 Aug 2026 10:09:22 -0700 Subject: Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ... --- Documentation/ABI/testing/debugfs-driver-dcc | 127 +++++++++++++++++++++++++++ 1 file changed, 127 insertions(+) create mode 100644 Documentation/ABI/testing/debugfs-driver-dcc (limited to 'Documentation/ABI/testing/debugfs-driver-dcc') diff --git a/Documentation/ABI/testing/debugfs-driver-dcc b/Documentation/ABI/testing/debugfs-driver-dcc new file mode 100644 index 000000000..27ed5919d --- /dev/null +++ b/Documentation/ABI/testing/debugfs-driver-dcc @@ -0,0 +1,127 @@ +What: /sys/kernel/debug/dcc/.../ready +Date: December 2022 +Contact: Souradeep Chowdhury +Description: + This file is used to check the status of the dcc + hardware if it's ready to receive user configurations. + A 'Y' here indicates dcc is ready. + +What: /sys/kernel/debug/dcc/.../trigger +Date: December 2022 +Contact: Souradeep Chowdhury +Description: + This is the debugfs interface for manual software + triggers. The trigger can be invoked by writing '1' + to the file. + +What: /sys/kernel/debug/dcc/.../config_reset +Date: December 2022 +Contact: Souradeep Chowdhury +Description: + This file is used to reset the configuration of + a dcc driver to the default configuration. When '1' + is written to the file, all the previous addresses + stored in the driver gets removed and users need to + reconfigure addresses again. + +What: /sys/kernel/debug/dcc/.../[list-number]/config +Date: December 2022 +Contact: Souradeep Chowdhury +Description: + This stores the addresses of the registers which + can be read in case of a hardware crash or manual + software triggers. The input addresses type + can be one of following dcc instructions: read, + write, read-write, and loop type. The lists need to + be configured sequentially and not in a overlapping + manner; e.g. users can jump to list x only after + list y is configured and enabled. The input format for + each type is as follows: + + i) Read instruction + + :: + + echo R >/sys/kernel/debug/dcc/../[list-number]/config + + where: + + + The address to be read. + + + The addresses word count, starting from address <1>. + Each word is 32 bits (4 bytes). If omitted, defaulted + to 1. + + + The bus type, which can be either 'apb' or 'ahb'. + The default is 'ahb' if leaved out. + + ii) Write instruction + + :: + + echo W > /sys/kernel/debug/dcc/../[list-number]/config + + where: + + + The address to be written. + + + The value to be written at . + + + The bus type, which can be either 'apb' or 'ahb'. + + iii) Read-write instruction + + :: + + echo RW > /sys/kernel/debug/dcc/../[list-number]/config + + where: + + + The address to be read and written. + + + The value to be written at . + + + The value mask. + + iv) Loop instruction + + :: + + echo L
... > /sys/kernel/debug/dcc/../[list-number]/config + + where: + + + Number of iterations + +
+ total number of addresses to be written + +
+ Space-separated list of addresses. + +What: /sys/kernel/debug/dcc/.../[list-number]/enable +Date: December 2022 +Contact: Souradeep Chowdhury +Description: + This debugfs interface is used for enabling the + the dcc hardware. A file named "enable" is in the + directory list number where users can enable/disable + the specific list by writing boolean (1 or 0) to the + file. + + On enabling the dcc, all the addresses specified + by the user for the corresponding list is written + into dcc sram which is read by the dcc hardware + on manual or crash induced triggers. Lists must + be configured and enabled sequentially, e.g. list + 2 can only be enabled when list 1 have so. -- cgit v1.3.1