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References: <20231101-gdsc-hwctrl-v3-0-0740ae6b2b04@linaro.org> <20231101-gdsc-hwctrl-v3-4-0740ae6b2b04@linaro.org>
In-Reply-To: <20231101-gdsc-hwctrl-v3-4-0740ae6b2b04@linaro.org>
From:   Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Date:   Wed, 1 Nov 2023 23:31:23 +0200
Message-ID: <CAA8EJppM9XfUPbt_=UKiKbbrtvkmEt5J=yw_b8zWXrGa9yMRJg@mail.gmail.com>
Subject: Re: [PATCH RESEND v3 4/5] clk: qcom: Use HW_CTRL_TRIGGER flag to
 switch video GDSC to HW mode
To:     Abel Vesa <abel.vesa@linaro.org>
Cc:     "Rafael J. Wysocki" <rafael@kernel.org>,
        Kevin Hilman <khilman@kernel.org>,
        Ulf Hansson <ulf.hansson@linaro.org>,
        Pavel Machek <pavel@ucw.cz>, Len Brown <len.brown@intel.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Bjorn Andersson <andersson@kernel.org>,
        Andy Gross <agross@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@kernel.org>,
        Stanimir Varbanov <stanimir.k.varbanov@gmail.com>,
        Vikash Garodia <quic_vgarodia@quicinc.com>,
        "Bryan O'Donoghue" <bryan.odonoghue@linaro.org>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Taniya Das <tdas@qti.qualcomm.com>, linux-pm@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
        linux-clk@vger.kernel.org, linux-media@vger.kernel.org,
        Jagadeesh Kona <quic_jkona@quicinc.com>
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On Wed, 1 Nov 2023 at 11:06, Abel Vesa <abel.vesa@linaro.org> wrote:
>
> From: Jagadeesh Kona <quic_jkona@quicinc.com>
>
> The current HW_CTRL flag switches the video GDSC to HW control mode as
> part of GDSC enable itself, instead of that use HW_CTRL_TRIGGER flag to
> give consumer drivers more control and switch the GDSC mode as and when
> required.
>
> HW_CTRL_TRIGGER flag allows consumer drivers to switch the video GDSC to
> HW/SW control modes at runtime using dev_pm_genpd_set_hwmode API.

Will existing venus driver continue to work with this patch being applied?

>
> Signed-off-by: Jagadeesh Kona <quic_jkona@quicinc.com>
> Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
> ---
>  drivers/clk/qcom/videocc-sc7180.c | 2 +-
>  drivers/clk/qcom/videocc-sc7280.c | 2 +-
>  drivers/clk/qcom/videocc-sdm845.c | 4 ++--
>  drivers/clk/qcom/videocc-sm8250.c | 4 ++--
>  drivers/clk/qcom/videocc-sm8550.c | 4 ++--
>  5 files changed, 8 insertions(+), 8 deletions(-)


-- 
With best wishes
Dmitry