linux-kernel - Re: [PATCH v3 00/12] pwm: add support for atomic update

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Date:	Thu, 10 Mar 2016 18:54:38 +0100
From:	Thierry Reding <thierry.reding@...il.com>
To:	Doug Anderson <dianders@...gle.com>
Cc:	Boris Brezillon <boris.brezillon@...e-electrons.com>,
	Heiko Stübner <heiko@...ech.de>,
	linux-pwm <linux-pwm@...r.kernel.org>,
	Mark Brown <broonie@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jingoo Han <jingoohan1@...il.com>,
	Lee Jones <lee.jones@...aro.org>, linux-fbdev@...r.kernel.org,
	Bryan Wu <cooloney@...il.com>,
	Richard Purdie <rpurdie@...ys.net>,
	Jacek Anaszewski <j.anaszewski@...sung.com>,
	linux-leds@...r.kernel.org,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	linux-sunxi@...glegroups.com,
	"open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	Daniel Mack <daniel@...que.org>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Robert Jarzmik <robert.jarzmik@...e.fr>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>, Olof Johansson <olof@...om.net>
Subject: Re: [PATCH v3 00/12] pwm: add support for atomic update

On Mon, Mar 07, 2016 at 08:34:19AM -0800, Doug Anderson wrote:
> Thierry,
> 
> On Thu, Feb 25, 2016 at 3:14 PM, Doug Anderson <dianders@...gle.com> wrote:
> > So just to summarize:
> >
> > * Add pwm_get_state(), pwm_apply_state(), pwm_get_args().
> > pwm_get_state() initially returns 0 for duty cycle if driver doesn't
> > support readout.
> >
> > * Re-implement pwm_get_period() (and maybe other similar functions)
> > atop pwm_get_state() as you describe earlier in the thread.
> >
> > * Document pwm_get_period() (and maybe other similar functions) as deprecated.
> >
> > * Fix drivers for all current 2 users of PWM regulator to support
> > hardware readout.
> >
> > * Update PWM regulator as you described earlier in the thread (Feb 23).
> >
> > * If PWM regulator is ever used on a new board whose PWM doesn't
> > support hardware readout, the voltage will change at probe time.
> >
> >
> > Did I get all that right?  Thanks!
> 
> Can you provide a "yes, you got that right" or a "no, you didn't
> understand"?  That will unblock Boris, I think.

Sounds about right. Hopefully this will eliminate any objections that
others had about the series.

Thierry

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