Re: [RFC PATCH 1/2] PM: domains: Allow devices attached to genpd to be managed by HW

Greg Kroah-Hartman
2023-06-27T10:46:36Z

On Tue, Jun 27, 2023 at 01:40:32PM +0300, Abel Vesa wrote:
> From: Ulf Hansson <ulf.hansson@linaro.org>
>
> Some power-domains may be capable of relying on the HW to control the power
> for a device that's hooked up to it. Typically, for these kinds of
> configurations the device doesn't really need to be attached to a PM domain
> (genpd), from Linux point of view. However, in some cases the behaviour of
> the power-domain and its device can be changed in runtime.
>
> To allow a consumer driver to change the behaviour of the PM domain for its
> device, let's provide a new function, dev_pm_genpd_set_hwmode(). Moreover,
> let's add a corresponding optional genpd callback, ->set_hwmode_dev(),
> which the genpd provider should implement if it can support switching
> between HW controlled mode and SW controlled mode.
>
> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

You can't forward on a patch from someone else without also adding your
signed-off-by on it, right?

Also, why is this a RFC series? What is left to do with it to get it
into a state which you feel comfortable having us review it "for real"?

thanks,

greg k-h