drivers: video: common: introduce CCI utilities #87935
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Add a library for the Camera Common Interface, part of the MIPI CSI protocol standard defining methods to configure a camera device over I2C, such as which size for the register address/data. Signed-off-by: Josuah Demangeon <me@josuah.net>
Reduce the amount of code in the GC2145 driver by switching to the CCI helpers in video_common.c. The batch I2C write functions are not used to avoid increasing the size of the ROM, as struct video_reg is 8 bytes while the ad-hoc struct gc2145_reg is 2 bytes. Signed-off-by: Josuah Demangeon <me@josuah.net>
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No dependency. Split out of:
Downstream:
Add a library for the Camera Common Interface, part of the MIPI CSI protocol standard defining methods to configure a camera device over I2C, such as which size for the register address/data.
This is applied to the GC2145 image sensor. Ping @uLipe @iabdalkader who last worked with it.
Also tested with an IMX219 and the emulated video imager, not part of this PR.