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Re: [RESEND 10/11] pwm: sti: Enable PWM Capture

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  Re: [RESEND 10/11] pwm: sti: Enable PWM Capture Thierry Reding <thierry.reding@gmail.com> - 2016-04-12 13:00 +0200

#1376696 — Re: [RESEND 10/11] pwm: sti: Enable PWM Capture

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On Wed, Mar 02, 2016 at 03:32:08PM +0000, Lee Jones wrote:
> Once all functionality is in place, we provide the means to
> enable PWM Capture.  Here we are simply obtaining the
> associated regmap and twiddling the relevant enable register
> bits.
> 
> Signed-off-by: Lee Jones <lee.jones@linaro.org>
> ---
>  drivers/pwm/pwm-sti.c | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/drivers/pwm/pwm-sti.c b/drivers/pwm/pwm-sti.c
> index 8de9b4a..93cf20e 100644
> --- a/drivers/pwm/pwm-sti.c
> +++ b/drivers/pwm/pwm-sti.c
> @@ -279,6 +279,13 @@ static int sti_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
>  				pwm->hwpwm);
>  			goto out;
>  		}
> +
> +		ret = regmap_field_write(pc->pwm_cpt_en, 1);
> +		if (ret) {
> +			dev_err(dev, "failed to enable PWM capture:%d\n",
> +				pwm->hwpwm);
> +			goto out;
> +		}

Should this perhaps be part of the driver's ->capture() implementation?
It seems redundant to have this logic enabled if we may never use it.

Thierry

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