Hi Laurent, Sakari, et al., Here is v2 of my MIPI CCI register access helper patches. New in the CCI register access helpers in v2: - Drop cci_reg_type enum - Make having an encoded reg-width mandatory rather then using 0 to encode 8 bit width making reg-addresses without an encoded width default to a width of 8 - Add support for 64 bit wide registers - Introduce a new cci_reg_sequence struct with 64 bit reg values for 64 bit support and without the delay_us field - Various kerneldoc updates - Stop supporting delays in cci_multi_reg_write() - Some includes cleanups - Disable regmap locking Other changes: - Add a patch to convert the ov5693 driver (tested on Surface Go) - Add a patch to convert the imx290 driver (untested) Original (v1) cover-letter: The CSI2 specification specifies a standard method to access camera sensor registers called "Camera Control Interface (CCI)". Currently a lot of Linux camera sensor drivers all have their own custom helpers for this, often copy and pasted from other drivers. This adds a set of generic helpers for this so that all sensor drivers can switch to a single common implementation. This is based on / the result of our previous discussion on this here: Link: https://lore.kernel.org/linux-media/59aefa7f-7bf9-6736-6040-39551329cd0a@xxxxxxxxxx/ Patches 2-4 are examples of how these helpers can be used and patch 5 removes the now no longer necessary ov_16bit_addr_reg_helpers.h which was the previous attempt to add common CCI access helpers. Regards, Hans Hans de Goede (5): media: Add MIPI CCI register access helper functions media: ov5693: Convert to new CCI register access helpers media: imx290: Convert to new CCI register access helpers media: atomisp: ov2680: Convert to new CCI register access helpers media: Remove ov_16bit_addr_reg_helpers.h Documentation/driver-api/media/v4l2-cci.rst | 5 + Documentation/driver-api/media/v4l2-core.rst | 1 + drivers/media/i2c/Kconfig | 2 + drivers/media/i2c/imx290.c | 350 +++++------ drivers/media/i2c/ov5693.c | 574 +++++++----------- drivers/media/v4l2-core/Kconfig | 5 + drivers/media/v4l2-core/Makefile | 1 + drivers/media/v4l2-core/v4l2-cci.c | 157 +++++ drivers/staging/media/atomisp/i2c/Kconfig | 1 + .../media/atomisp/i2c/atomisp-ov2680.c | 237 +++----- drivers/staging/media/atomisp/i2c/ov2680.h | 86 +-- include/media/ov_16bit_addr_reg_helpers.h | 92 --- include/media/v4l2-cci.h | 121 ++++ 13 files changed, 763 insertions(+), 869 deletions(-) create mode 100644 Documentation/driver-api/media/v4l2-cci.rst create mode 100644 drivers/media/v4l2-core/v4l2-cci.c delete mode 100644 include/media/ov_16bit_addr_reg_helpers.h create mode 100644 include/media/v4l2-cci.h -- 2.40.1
