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9448217403
This patch is a preceding step for making common lp55xx init function. LP5521_REG_R_CURRENT register code moved: Chip specific code moved from lp5521_init_device() to lp5521_configure(). Remove engine init function: LP5521 has internal program engines which are used for running LED patterns. (blinking, ramp up/down and other emotional visual effects) Engine initialization is done by reset command in lp5521_init_device(). Remove this duplicate code. Return code: Do not use 'OR' arithmetic for the result. If some error occus, just return it. Enable latency: Use explicit named function, lp5521_wait_enable_done(). According to the datasheet, 500us is guaranteed time. Thus wait time is changed from 1000us to 500us. Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com> Signed-off-by: Bryan Wu <cooloney@gmail.com>