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From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: Fabrice Gasnier <fabrice.gasnier@st.com>
Cc: mark.rutland@arm.com, devicetree@vger.kernel.org,
	alexandre.torgue@st.com, tduszyns@gmail.com,
	linux-kernel@vger.kernel.org, robh+dt@kernel.org,
	thierry.reding@gmail.com, linux-pwm@vger.kernel.org,
	mcoquelin.stm32@gmail.com,
	linux-stm32@st-md-mailman.stormreply.com,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 3/3] pwm: core: add consumer device link
Date: Tue, 12 Feb 2019 10:03:04 +0100
Message-ID: <20190212090304.3j4iqj6sodtdvhr7@pengutronix.de> (raw)
In-Reply-To: <b9f1bb5c-36cd-f6e6-e6c6-a0257cf38b7e@st.com>

Hello Fabrice,

On Tue, Feb 12, 2019 at 09:31:37AM +0100, Fabrice Gasnier wrote:
> On 2/11/19 8:06 PM, Uwe Kleine-König wrote:
> > On Mon, Feb 11, 2019 at 05:12:02PM +0100, Fabrice Gasnier wrote:
> >> @@ -943,6 +950,8 @@ struct pwm_device *devm_of_pwm_get(struct device *dev, struct device_node *np,
> >>  	if (!IS_ERR(pwm)) {
> >>  		*ptr = pwm;
> >>  		devres_add(dev, ptr);
> >> +		device_link_add(dev, pwm->chip->dev,
> >> +				DL_FLAG_AUTOREMOVE_CONSUMER);
> > 
> > IMHO it's surprising that devm_of_pwm_get() does more than of_pwm_get()
> > + devres stuff. I'd put device_link_add() into of_pwm_get().
> 
> Hi Uwe,
> 
> I also agree with this. But I think this implies modifying the API for
> of_pwm_get():
>  /**
>   * of_pwm_get() - request a PWM via the PWM framework
> + * @dev: device for PWM consumer
>   * @np: device node to get the PWM from
>   * @con_id: consumer name
> 
> It seems there aren't much of_pwm_get() users currently.
> Does this look sensible ?

In my eyes this looks sensible, yes.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

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Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-11 16:11 [PATCH v2 0/3] Add PM support to STM32 LP Timer drivers Fabrice Gasnier
2019-02-11 16:12 ` [PATCH v2 1/3] dt-bindings: pwm-stm32-lp: document pinctrl sleep state Fabrice Gasnier
2019-02-11 16:12 ` [PATCH v2 2/3] pwm: stm32-lp: Add power management support Fabrice Gasnier
2019-02-11 16:12 ` [PATCH v2 3/3] pwm: core: add consumer device link Fabrice Gasnier
2019-02-11 19:06   ` Uwe Kleine-König
2019-02-12  8:31     ` Fabrice Gasnier
2019-02-12  9:03       ` Uwe Kleine-König [this message]
2019-02-13 10:51         ` Fabrice Gasnier

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