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cd485b3a13
This adds support for the TI LP5562 RGB LED driver. Things to note: - The driver is initialized in simple PWM mode using its internal clock, for R,G,B, but not for W(hite). - The chip doesn't have a WHO_AM_I or DEVICE_ID register to check. Instead we read the W_CURRENT register that we're generally not using and therefore doesn't get changed. - The current is left at the default 17.5 mA but could be changed using the command line argument. Datasheet: https://www.ti.com/lit/ds/symlink/lp5562.pdf Signed-off-by: Julian Oes <julian@oes.ch>