Unverified Commit 5fa4e8ea authored by Dave Stevenson's avatar Dave Stevenson Committed by Mark Brown
Browse files

regulator/rpi-panel-attiny: Use the regmap cache 



The I2C to the Atmel is very fussy, and locks up easily on
Pi0-3 particularly on reads.

The LCD power status is controlled solely by this driver, so
rather than reading it back from the Atmel, use the regmap cache
to avoid reading values.

Signed-off-by: default avatarDave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: default avatarDetlev Casanova <detlev.casanova@collabora.com>
Link: https://lore.kernel.org/r/20220124220129.158891-9-detlev.casanova@collabora.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 1d746d44

drivers/regulator/rpi-panel-attiny-regulator.c

+1 −1
Original line number Diff line number Diff line
@@ -76,7 +76,7 @@ static const struct regmap_config attiny_regmap_config = { 
	.val_bits = 8,

	.disable_locking = 1,

	.max_register = REG_WRITE_DATA_L,

	.cache_type = REGCACHE_NONE,

	.cache_type = REGCACHE_RBTREE,

};



static int attiny_set_port_state(struct attiny_lcd *state, int reg, u8 val)