Add streams support to Renesas rcar platform driver. The series attempts to keep compatibility with the current upstream. However, in upstream there's some kind of custom multi-stream support implemented to the rcar driver, which breaks at patch "media: rcar-csi2: Simplify rcsi2_calc_mbps()". The behavior should not change when using a single stream. Testing is problematic, as the only way currently for me to get multiple streams is by using the GMSL2 deserializer add-on board with GMSL2 serializers. These are not supported in upstream. If someone has the hardware and wants to test, I can share the very-WIP branch that contains the missing pieces. Tomi Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@xxxxxxxxxxxxxxxx> --- Changes in v3: - Rebased on top of latest linux-media - Dropped dependencies which are already in linux-media (only remaining dependency is v4l2_subdev_get_frame_desc_passthrough) - Tested on white-hawk board, using the staging deser TPG - Also tested in a WIP branch for GMSL2 (two video streams) - Link to v2: https://lore.kernel.org/r/20250326-rcar-streams-v2-0-d0d7002c641f@xxxxxxxxxxxxxxxx Changes in v2: - Rebased on top of latest upstream, and updated the dependencies to match the latest serieses sent. - Add new patch "media: rcar-csi2: Use the pad version of v4l2_get_link_freq()" - Drop "media: rcar-csi2: Fix typo" (it was not a typo) - Update the code in calc_mbps(). The previous method relied on V4L2_CID_LINK_FREQ, but that's not available if the link-freq is provided via get_mbus_config(). - Dropped dependencies to Niklas' old series which doesn't apply cleanly. It's needed for multi-stream, but not for the current upstream which only has a single stream use case. - Link to v1: https://lore.kernel.org/r/20250219-rcar-streams-v1-0-f1b93e370aab@xxxxxxxxxxxxxxxx --- Tomi Valkeinen (15): media: rcar-csi2: Use the pad version of v4l2_get_link_freq() media: rcar-isp: Improve ISPPROCMODE_DT_PROC_MODE_VC media: rcar-isp: Move {enable|disable}_streams() calls media: rcar-csi2: Move {enable|disable}_streams() calls media: rcar-csi2: Move rcar2_calc_mbps() media: rcar-csi2: Simplify rcsi2_calc_mbps() media: rcar-csi2: Optimize rcsi2_calc_mbps() media: rcar-csi2: Switch to Streams API media: rcar-isp: Switch to Streams API media: rcar-csi2: Add .get_frame_desc op media: rcar-isp: Call get_frame_desc to find out VC & DT media: rcar-csi2: Add more stream support to rcsi2_calc_mbps() media: rcar-csi2: Call get_frame_desc to find out VC & DT (Gen3) media: rcar-csi2: Add full streams support media: rcar-isp: Add full streams support drivers/media/platform/renesas/rcar-csi2.c | 426 +++++++++++++++++------- drivers/media/platform/renesas/rcar-isp/csisp.c | 228 ++++++++++--- 2 files changed, 479 insertions(+), 175 deletions(-) --- base-commit: 5e1ff2314797bf53636468a97719a8222deca9ae change-id: 20250219-rcar-streams-1fdea8860e5e prerequisite-change-id: 20250218-frame-desc-passthrough-66805e413974:v4 prerequisite-patch-id: bce4a915a29a64f88ed1bb600c08df37d2ba20c6 prerequisite-patch-id: 69b75e7dad9ced905cb39a72f18bebbf3e8f998a prerequisite-patch-id: 58463f6944c76acd6cf203b14a2836cdb0db2461 Best regards, -- Tomi Valkeinen <tomi.valkeinen+renesas@xxxxxxxxxxxxxxxx>
