On Wed, Jul 01, 2015 at 10:21:56AM +0200, Boris Brezillon wrote: > Add a ->init_state() function to the pwm_ops struct to let PWM drivers > initialize the PWM state attached to a PWM device. > > Signed-off-by: Boris Brezillon <[email protected]> > --- > drivers/pwm/core.c | 3 +++ > include/linux/pwm.h | 2 ++ > 2 files changed, 5 insertions(+) > > diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c > index 3e830ce..30631f5 100644 > --- a/drivers/pwm/core.c > +++ b/drivers/pwm/core.c > @@ -264,6 +264,9 @@ int pwmchip_add_with_polarity(struct pwm_chip *chip, > pwm->hwpwm = i; > pwm_set_default_polarity(pwm, polarity); > > + if (chip->ops->init_state) > + chip->ops->init_state(chip, pwm); > + > radix_tree_insert(&pwm_tree, pwm->pwm, pwm); > } > > diff --git a/include/linux/pwm.h b/include/linux/pwm.h > index 0f36a06..b47244a 100644 > --- a/include/linux/pwm.h > +++ b/include/linux/pwm.h > @@ -177,6 +177,8 @@ struct pwm_ops { > struct pwm_device *pwm); > void (*disable)(struct pwm_chip *chip, > struct pwm_device *pwm); > + void (*init_state)(struct pwm_chip *chip, > + struct pwm_device *pwm);
I think I'd call this reset_state. init has this connotation of setting a set of default values. For reset it's clearer in my opinion that it's resetting to the hardware state. Thierry
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