Thread (105 messages) 105 messages, 10 authors, 2016-04-14

Re: [PATCH v5 00/46] pwm: add support for atomic update

From: Boris Brezillon <hidden>
Date: 2016-04-11 22:43:08
Also in: dri-devel, intel-gfx, linux-arm-kernel, linux-fbdev, linux-input, linux-leds, linux-pwm, linux-rockchip, linux-samsung-soc, lkml

Hi Thierry,

On Wed, 30 Mar 2016 22:03:23 +0200
Boris Brezillon [off-list ref] 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
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help