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Message-ID: <20160412004245.715db791@bbrezillon>
Date:	Tue, 12 Apr 2016 00:42:45 +0200
From:	Boris Brezillon <boris.brezillon@...e-electrons.com>
To:	Thierry Reding <thierry.reding@...il.com>,
	linux-pwm@...r.kernel.org
Cc:	Mike Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...eaurora.org>, linux-clk@...r.kernel.org,
	Mark Brown <broonie@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Kamil Debski <k.debski@...sung.com>, lm-sensors@...sensors.org,
	Jean Delvare <jdelvare@...e.com>,
	Guenter Roeck <linux@...ck-us.net>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-input@...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>,
	Chen-Yu Tsai <wens@...e.org>, linux-sunxi@...glegroups.com,
	Joachim Eastwood <manabian@...il.com>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Heiko Stuebner <heiko@...ech.de>,
	linux-rockchip@...ts.infradead.org,
	Jingoo Han <jingoohan1@...il.com>,
	Lee Jones <lee.jones@...aro.org>, linux-fbdev@...r.kernel.org,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	Robert Jarzmik <robert.jarzmik@...e.fr>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Kukjin Kim <kgene@...nel.org>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	linux-samsung-soc@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
	Daniel Vetter <daniel.vetter@...el.com>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	Jonathan Corbet <corbet@....net>, linux-doc@...r.kernel.org,
	David Airlie <airlied@...ux.ie>,
	Daniel Vetter <daniel@...ll.ch>,
	dri-devel@...ts.freedesktop.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Hartley Sweeten <hsweeten@...ionengravers.com>,
	Ryan Mallon <rmallon@...il.com>,
	Alexander Shiyan <shc_work@...l.ru>, Milo Kim <milo.kim@...com>
Subject: Re: [PATCH v5 00/46] pwm: add support for atomic update

Hi Thierry,

On Wed, 30 Mar 2016 22:03:23 +0200
Boris Brezillon <boris.brezillon@...e-electrons.com> wrote:

> Hello,
> 
> This series adds support for atomic PWM update, or IOW, the capability
> to update all the parameters of a PWM device (enabled/disabled, period,
> duty and polarity) in one go.
> 
> It also adds support for initial PWM state retrieval (or hardware readout),
> which should allow smooth handover between the bootloader and Linux. For
> example, critical PWM users (like critical regulators controlled by a PWM)
> can query the current PWM state, and adapt the PWM config without having
> to disable/enable the PWM, or abruptly change the period/dutycyle/polarity
> config.
> 
> Thierry, I hope this version meets your expectations, if that's not the
> case, could you let me know quickly so I can adjust the implementation
> accordingly (I'd really like to get most of those changes in 4.7).

Still haven't had a clear feedback from your side on this series (you
commented on a few details, but nothing on the general approach). Could
you please have at a quick look at it, and let me know if I should
adjust the implementation?

Note that I plan to send a new version  addressing comments made by
other maintainers/developers by the end of the week. In the meantime,
could you have a look at the first set of patches (patch 1 to 4 are
completely independent), and apply them if you're happy with it.

As you can see, I now have a lot of patches. This helps in showing the
big picture, but also annoys people when I send this 50+ patchset. So,
if you don't mind, I'd like to drop the changes touching PWM user
drivers (to make them use the atomic API) until we get the other parts
applied.

Thanks,

Boris

-- 
Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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