linux-kernel - Re: [PATCH 2/4] pwm: pwm-jz4740: Implement set

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Date:   Sat, 17 Mar 2018 21:46:04 +0100
From:   Paul Cercueil <paul@...pouillou.net>
To:     Thierry Reding <thierry.reding@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Cc:     linux-pwm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] pwm: pwm-jz4740: Implement set_polarity

Hi,

Could this patchset get a bit of love?
I have other changes waiting for this patchset to get in, so it'd be 
great
to see it in 4.17-rc1.

Thanks,
-Paul

Le sam. 6 janv. 2018 à 17:58, Paul Cercueil <paul@...pouillou.net> a 
écrit :
> This permits clients of this driver to specify the polarity to use for
> their PWM channel.
> 
> Signed-off-by: Paul Cercueil <paul@...pouillou.net>
> ---
>  drivers/pwm/pwm-jz4740.c | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/drivers/pwm/pwm-jz4740.c b/drivers/pwm/pwm-jz4740.c
> index 2e41ba213f39..6539c001fe32 100644
> --- a/drivers/pwm/pwm-jz4740.c
> +++ b/drivers/pwm/pwm-jz4740.c
> @@ -130,10 +130,29 @@ static int jz4740_pwm_config(struct pwm_chip 
> *chip, struct pwm_device *pwm,
>  	return 0;
>  }
> 
> +static int jz4740_pwm_set_polarity(struct pwm_chip *chip,
> +		struct pwm_device *pwm, enum pwm_polarity polarity)
> +{
> +	uint32_t ctrl = jz4740_timer_get_ctrl(pwm->pwm);
> +
> +	switch (polarity) {
> +	case PWM_POLARITY_NORMAL:
> +		ctrl &= ~JZ_TIMER_CTRL_PWM_ACTIVE_LOW;
> +		break;
> +	case PWM_POLARITY_INVERSED:
> +		ctrl |= JZ_TIMER_CTRL_PWM_ACTIVE_LOW;
> +		break;
> +	}
> +
> +	jz4740_timer_set_ctrl(pwm->hwpwm, ctrl);
> +	return 0;
> +}
> +
>  static const struct pwm_ops jz4740_pwm_ops = {
>  	.request = jz4740_pwm_request,
>  	.free = jz4740_pwm_free,
>  	.config = jz4740_pwm_config,
> +	.set_polarity = jz4740_pwm_set_polarity,
>  	.enable = jz4740_pwm_enable,
>  	.disable = jz4740_pwm_disable,
>  	.owner = THIS_MODULE,
> --
> 2.11.0
>