linux-kernel - Re: [PATCH v3] pwm: bcm2835: Support apply function for atomic configuration

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Message-ID: <20201210114330.6pgtome3aq3hj55t@pengutronix.de>
Date:   Thu, 10 Dec 2020 12:43:30 +0100
From:   Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To:     Lino Sanfilippo <LinoSanfilippo@....de>
Cc:     thierry.reding@...il.com, lee.jones@...aro.org,
        nsaenzjulienne@...e.de, f.fainelli@...il.com, rjui@...adcom.com,
        sean@...s.org, sbranden@...adcom.com,
        bcm-kernel-feedback-list@...adcom.com, linux-pwm@...r.kernel.org,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] pwm: bcm2835: Support apply function for atomic
 configuration

Hello,

On Tue, Dec 08, 2020 at 11:01:45PM +0100, Lino Sanfilippo wrote:
> Use the newer .apply function of pwm_ops instead of .config, .enable,
> .disable and .set_polarity. This guarantees atomic changes of the pwm
> controller configuration. It also reduces the size of the driver.
> 
> Since now period is a 64 bit value, add an extra check to reject periods
> that exceed the possible max value for the 32 bit register.
> 
> This has been tested on a Raspberry PI 4.
> 
> Signed-off-by: Lino Sanfilippo <LinoSanfilippo@....de>

Reviewed-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

Side note: I'm a bit surprised about the output of

	b4 diff 1607464905-16630-1-git-send-email-LinoSanfilippo@....de

This is probably due to the fact that compared to v3 you also rebased.
Still the diff is quite big.

Best regards and thanks for your patch
Uwe

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

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