diff options
| author | Uwe Kleine-König <uwe@kleine-koenig.org> | 2021-03-22 01:24:12 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2021-03-25 21:14:08 +0300 |
| commit | 8f50743feedd9a4d322322ef1d91426401e98e10 (patch) | |
| tree | ffdcd3136783ade3f686d8fd65aff39805dfa294 /drivers/input/misc | |
| parent | 8b488ef295f206885dbe48de09346059df620dfa (diff) | |
| download | linux-8f50743feedd9a4d322322ef1d91426401e98e10.tar.xz | |
Input: max8997 - simplify open coding of a division using up to 64 divisions
The for loop is just a complicate way to express a division. Replace it
by the actual division which is both simpler to understand for a human
and more efficient for a CPU to calculate.
Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
Link: https://lore.kernel.org/r/20210316212233.50765-1-uwe@kleine-koenig.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/misc')
| -rw-r--r-- | drivers/input/misc/max8997_haptic.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/input/misc/max8997_haptic.c b/drivers/input/misc/max8997_haptic.c index 20ff087b8a44..cd5e99ec1d3c 100644 --- a/drivers/input/misc/max8997_haptic.c +++ b/drivers/input/misc/max8997_haptic.c @@ -61,15 +61,10 @@ static int max8997_haptic_set_duty_cycle(struct max8997_haptic *chip) unsigned int duty = chip->pwm_period * chip->level / 100; ret = pwm_config(chip->pwm, duty, chip->pwm_period); } else { - int i; u8 duty_index = 0; - for (i = 0; i <= 64; i++) { - if (chip->level <= i * 100 / 64) { - duty_index = i; - break; - } - } + duty_index = DIV_ROUND_UP(chip->level * 64, 100); + switch (chip->internal_mode_pattern) { case 0: max8997_write_reg(chip->client, |