leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

media: rc: pwm-ir-tx: Switch to atomic PWM API

Browse Source 
Remove legacy PWM interface (pwm_config, pwm_enable, pwm_disable) and
replace it for the atomic PWM API.

Signed-off-by: Maíra Canal <maira.canal@usp.br>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Maíra Canal 2021-10-27 16:34:30 +01:00 committed by Mauro Carvalho Chehab
parent 220546727a
commit 8985696ad9
1 changed files with 9 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/media/rc/pwm-ir-tx.c
View File

@ -53,22 +53,21 @@ static int pwm_ir_tx(struct rc_dev *dev, unsigned int *txbuf,
{
struct pwm_ir *pwm_ir = dev->priv;
struct pwm_device *pwm = pwm_ir->pwm;
int i, duty, period;
struct pwm_state state;
int i;
ktime_t edge;
long delta;
period = DIV_ROUND_CLOSEST(NSEC_PER_SEC, pwm_ir->carrier);
duty = DIV_ROUND_CLOSEST(pwm_ir->duty_cycle * period, 100);
pwm_init_state(pwm, &state);
pwm_config(pwm, duty, period);
state.period = DIV_ROUND_CLOSEST(NSEC_PER_SEC, pwm_ir->carrier);
pwm_set_relative_duty_cycle(&state, pwm_ir->duty_cycle, 100);
edge = ktime_get();
for (i = 0; i < count; i++) {
if (i % 2) // space
pwm_disable(pwm);
else
pwm_enable(pwm);
state.enabled = !(i % 2);
pwm_apply_state(pwm, &state);
edge = ktime_add_us(edge, txbuf[i]);
delta = ktime_us_delta(edge, ktime_get());
@ -76,7 +75,8 @@ static int pwm_ir_tx(struct rc_dev *dev, unsigned int *txbuf,
usleep_range(delta, delta + 10);
}
pwm_disable(pwm);
state.enabled = false;
pwm_apply_state(pwm, &state);
return count;
}