linux-kernel - Re: [PATCH v4 0/5] PM: domains: Add control for switching back and forth to HW control

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Date: Tue, 23 Jan 2024 14:00:28 +0100
From: Ulf Hansson <ulf.hansson@...aro.org>
To: Abel Vesa <abel.vesa@...aro.org>, Bjorn Andersson <andersson@...nel.org>
Cc: "Rafael J. Wysocki" <rafael@...nel.org>, Kevin Hilman <khilman@...nel.org>, Pavel Machek <pavel@....cz>, 
	Len Brown <len.brown@...el.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	Andy Gross <agross@...nel.org>, Konrad Dybcio <konrad.dybcio@...aro.org>, 
	Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, 
	Stanimir Varbanov <stanimir.k.varbanov@...il.com>, Vikash Garodia <quic_vgarodia@...cinc.com>, 
	"Bryan O'Donoghue" <bryan.odonoghue@...aro.org>, Mauro Carvalho Chehab <mchehab@...nel.org>, 
	Taniya Das <quic_tdas@...cinc.com>, Jagadeesh Kona <quic_jkona@...cinc.com>, 
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, linux-pm@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
	linux-clk@...r.kernel.org, linux-media@...r.kernel.org
Subject: Re: [PATCH v4 0/5] PM: domains: Add control for switching back and
 forth to HW control

On Mon, 22 Jan 2024 at 09:47, Abel Vesa <abel.vesa@...aro.org> wrote:
>
> Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
> ---
> Changes in v4:
> - Re-worded 1st patch commit message, as per Bjorn's suggestion, and added
>   Dmitry's R-b tag
> - Added Bjorn's and Dmitry's R-b tags to the 2nd patch
> - Re-worded 3rd patch commit message, to better explain the HW_CTRL_TRIGGER flag.
> - Added mode transition delay when setting mode for GDSC
> - Added status polling if GDSSC is enabled when transitioning from HW to SW
> - Re-worded 4th patch commit message to better explain why the
>   HW_CTRL_TRIGGER needs to be used instead
> - Drop changes to SC7180, SDM845 and SM8550 video CC drivers, as only
>   SC7280 and SM8250 have been tested so far. More platforms (with v6 venus)
>   will be added eventually.
> - Call genpd set_hwmode API only for v6 and dropped the vcodec_pmdomains_hwctrl.
> - Re-worded 5th patch commit message accordingly.
> - Link to v3:
>   https://lore.kernel.org/r/20231101-gdsc-hwctrl-v3-0-0740ae6b2b04@linaro.org/
>
> ---
> Abel Vesa (1):
>       PM: domains: Add the domain HW-managed mode to the summary
>
> Jagadeesh Kona (3):
>       clk: qcom: gdsc: Add set and get hwmode callbacks to switch GDSC mode
>       clk: qcom: Use HW_CTRL_TRIGGER flag to switch video GDSC to HW mode
>       venus: pm_helpers: Use dev_pm_genpd_set_hwmode to switch GDSC mode
>
> Ulf Hansson (1):
>       PM: domains: Allow devices attached to genpd to be managed by HW
>
>  drivers/clk/qcom/gdsc.c                        | 54 +++++++++++++++++
>  drivers/clk/qcom/gdsc.h                        |  1 +
>  drivers/clk/qcom/videocc-sc7280.c              |  2 +-
>  drivers/clk/qcom/videocc-sm8250.c              |  4 +-
>  drivers/media/platform/qcom/venus/pm_helpers.c | 23 +++----
>  drivers/pmdomain/core.c                        | 83 +++++++++++++++++++++++++-
>  include/linux/pm_domain.h                      | 17 ++++++
>  7 files changed, 169 insertions(+), 15 deletions(-)
> ---

Bjorn, if it helps, I can funnel this complete series via my pmdomain tree?

Another option is that I host an immutable branch with patch1 and
patch2 for you to pull in? Just let me know what you prefer.

Kind regards
Uffe