lm3630a_read
rval = lm3630a_read(pchip, REG_INT_STATUS);
rval = lm3630a_read(pchip, REG_PWM_OUTHIGH);
rval = lm3630a_read(pchip, REG_PWM_OUTLOW);
rval = lm3630a_read(pchip, REG_BRT_A);
rval = lm3630a_read(pchip, REG_PWM_OUTHIGH);
rval = lm3630a_read(pchip, REG_PWM_OUTLOW);
rval = lm3630a_read(pchip, REG_BRT_B);