Simplify the equation to calculate ramp_delay. Below equations are equivalent: ramp_delay = 25000 / (2 * ramp_delay); ramp_delay = 50000 / (4 * ramp_delay); ramp_delay = 25000 / (2 * ramp_delay); ramp_delay = 12500 / ramp_delay; So we don't need to read BIT6 of rdev->desc->vsel_reg for applying different equations.
Also use rdev->desc->vsel_reg instead of run-time calculate register address. Signed-off-by: Axel Lin <[email protected]> --- drivers/regulator/pfuze100-regulator.c | 21 +++++---------------- 1 file changed, 5 insertions(+), 16 deletions(-) diff --git a/drivers/regulator/pfuze100-regulator.c b/drivers/regulator/pfuze100-regulator.c index e02d9b9..bda5561 100644 --- a/drivers/regulator/pfuze100-regulator.c +++ b/drivers/regulator/pfuze100-regulator.c @@ -93,26 +93,15 @@ static int pfuze100_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) { struct pfuze_chip *pfuze100 = rdev_get_drvdata(rdev); int id = rdev->desc->id; - unsigned int val, ramp_bits, reg; + unsigned int ramp_bits; int ret; if (id < PFUZE100_SWBST) { - if (id == PFUZE100_SW1AB) - reg = PFUZE100_SW1ABVOL; - else - reg = PFUZE100_SW1CVOL + (id - PFUZE100_SW1C) * 7; - regmap_read(pfuze100->regmap, reg, &val); - - if (id <= PFUZE100_SW1C) - ramp_delay = 25000 / (2 * ramp_delay); - else if (val & 0x40) - ramp_delay = 50000 / (4 * ramp_delay); - else - ramp_delay = 25000 / (2 * ramp_delay); - + ramp_delay = 12500 / ramp_delay; ramp_bits = (ramp_delay >> 1) - (ramp_delay >> 3); - ret = regmap_update_bits(pfuze100->regmap, reg + 4 , 0xc0, - ramp_bits << 6); + ret = regmap_update_bits(pfuze100->regmap, + rdev->desc->vsel_reg + 4, + 0xc0, ramp_bits << 6); if (ret < 0) dev_err(pfuze100->dev, "ramp failed, err %d\n", ret); } else -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
