linux-kernel - Re: [PATCH v4 2/2] clk: qcom: videocc: Use HW_CTRL

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Message-ID: <2d45f138-c16f-76f5-ea05-6153b1566d9f@quicinc.com>
Date: Thu, 29 May 2025 11:18:30 +0530
From: Vikash Garodia <quic_vgarodia@...cinc.com>
To: Renjiang Han <quic_renjiang@...cinc.com>,
        Dmitry Baryshkov
	<dmitry.baryshkov@....qualcomm.com>
CC: Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Bjorn Andersson
	<andersson@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        "Stephen
 Boyd" <sboyd@...nel.org>,
        Stanimir Varbanov <stanimir.k.varbanov@...il.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-media@...r.kernel.org>,
        Taniya Das <quic_tdas@...cinc.com>
Subject: Re: [PATCH v4 2/2] clk: qcom: videocc: Use HW_CTRL_TRIGGER flag for
 video GDSC's



On 5/29/2025 7:23 AM, Renjiang Han wrote:
> 
> On 5/29/2025 3:30 AM, Dmitry Baryshkov wrote:
>> On Mon, May 26, 2025 at 04:26:25PM +0800, Renjiang Han wrote:
>>> On 3/19/2025 6:11 AM, Bryan O'Donoghue wrote:
>>>> On 18/02/2025 10:33, Renjiang Han wrote:
>>>>> From: Taniya Das <quic_tdas@...cinc.com>
>>>>>
>>>>> The video driver will be using the newly introduced
>>>>> dev_pm_genpd_set_hwmode() API to switch the video GDSC to HW and SW
>>>>> control modes at runtime.
>>>>> Hence use HW_CTRL_TRIGGER flag instead of HW_CTRL for video GDSC's for
>>>>> Qualcomm SoC SC7180, SDM845, SM7150, SM8150 and SM8450.
>>>>>
>>>>> Signed-off-by: Taniya Das <quic_tdas@...cinc.com>
>>>>> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
>>>>> Signed-off-by: Renjiang Han <quic_renjiang@...cinc.com>
>>>>> ---
>>>>>    drivers/clk/qcom/videocc-sc7180.c | 2 +-
>>>>>    drivers/clk/qcom/videocc-sdm845.c | 4 ++--
>>>>>    drivers/clk/qcom/videocc-sm7150.c | 4 ++--
>>>>>    drivers/clk/qcom/videocc-sm8150.c | 4 ++--
>>>>>    drivers/clk/qcom/videocc-sm8450.c | 4 ++--
>>>>>    5 files changed, 9 insertions(+), 9 deletions(-)
>>>>>
>>>>> diff --git a/drivers/clk/qcom/videocc-sc7180.c
>>>>> b/drivers/clk/qcom/videocc-sc7180.c
>>>>> index
>>>>> d7f84548039699ce6fdd7c0f6675c168d5eaf4c1..dd2441d6aa83bd7cff17deeb42f5d011c1e9b134
>>>>> 100644
>>>>> --- a/drivers/clk/qcom/videocc-sc7180.c
>>>>> +++ b/drivers/clk/qcom/videocc-sc7180.c
>>>>> @@ -166,7 +166,7 @@ static struct gdsc vcodec0_gdsc = {
>>>>>        .pd = {
>>>>>            .name = "vcodec0_gdsc",
>>>>>        },
>>>>> -    .flags = HW_CTRL,
>>>>> +    .flags = HW_CTRL_TRIGGER,
>>>>>        .pwrsts = PWRSTS_OFF_ON,
>>>>>    };
>>>>>    diff --git a/drivers/clk/qcom/videocc-sdm845.c
>>>>> b/drivers/clk/qcom/videocc-sdm845.c
>>>>> index
>>>>> f77a0777947773dc8902c92098acff71b9b8f10f..6dedc80a8b3e18eca82c08a5bcd7e1fdc374d4b5
>>>>> 100644
>>>>> --- a/drivers/clk/qcom/videocc-sdm845.c
>>>>> +++ b/drivers/clk/qcom/videocc-sdm845.c
>>>>> @@ -260,7 +260,7 @@ static struct gdsc vcodec0_gdsc = {
>>>>>        },
>>>>>        .cxcs = (unsigned int []){ 0x890, 0x930 },
>>>>>        .cxc_count = 2,
>>>>> -    .flags = HW_CTRL | POLL_CFG_GDSCR,
>>>>> +    .flags = HW_CTRL_TRIGGER | POLL_CFG_GDSCR,
>>>>>        .pwrsts = PWRSTS_OFF_ON,
>>>>>    };
>>>>>    @@ -271,7 +271,7 @@ static struct gdsc vcodec1_gdsc = {
>>>>>        },
>>>>>        .cxcs = (unsigned int []){ 0x8d0, 0x950 },
>>>>>        .cxc_count = 2,
>>>>> -    .flags = HW_CTRL | POLL_CFG_GDSCR,
>>>>> +    .flags = HW_CTRL_TRIGGER | POLL_CFG_GDSCR,
>>>>>        .pwrsts = PWRSTS_OFF_ON,
>>>>>    };
>>>>>    diff --git a/drivers/clk/qcom/videocc-sm7150.c
>>>>> b/drivers/clk/qcom/videocc-sm7150.c
>>>>> index
>>>>> 14ef7f5617537363673662adc3910ddba8ea6a4f..b6912560ef9b7a84e7fd1d9924f5aac6967da780
>>>>> 100644
>>>>> --- a/drivers/clk/qcom/videocc-sm7150.c
>>>>> +++ b/drivers/clk/qcom/videocc-sm7150.c
>>>>> @@ -271,7 +271,7 @@ static struct gdsc vcodec0_gdsc = {
>>>>>        },
>>>>>        .cxcs = (unsigned int []){ 0x890, 0x9ec },
>>>>>        .cxc_count = 2,
>>>>> -    .flags = HW_CTRL | POLL_CFG_GDSCR,
>>>>> +    .flags = HW_CTRL_TRIGGER | POLL_CFG_GDSCR,
>>>>>        .pwrsts = PWRSTS_OFF_ON,
>>>>>    };
>>>>>    @@ -282,7 +282,7 @@ static struct gdsc vcodec1_gdsc = {
>>>>>        },
>>>>>        .cxcs = (unsigned int []){ 0x8d0, 0xa0c },
>>>>>        .cxc_count = 2,
>>>>> -    .flags = HW_CTRL | POLL_CFG_GDSCR,
>>>>> +    .flags = HW_CTRL_TRIGGER | POLL_CFG_GDSCR,
>>>>>        .pwrsts = PWRSTS_OFF_ON,
>>>>>    };
>>>>>    diff --git a/drivers/clk/qcom/videocc-sm8150.c
>>>>> b/drivers/clk/qcom/videocc-sm8150.c
>>>>> index
>>>>> daab3237eec19b727d34512d3a2ba1d7bd2743d6..3024f6fc89c8b374f2ef13debc283998cb136f6b
>>>>> 100644
>>>>> --- a/drivers/clk/qcom/videocc-sm8150.c
>>>>> +++ b/drivers/clk/qcom/videocc-sm8150.c
>>>>> @@ -179,7 +179,7 @@ static struct gdsc vcodec0_gdsc = {
>>>>>        .pd = {
>>>>>            .name = "vcodec0_gdsc",
>>>>>        },
>>>>> -    .flags = HW_CTRL,
>>>>> +    .flags = HW_CTRL_TRIGGER,
>>>>>        .pwrsts = PWRSTS_OFF_ON,
>>>>>    };
>>>>>    @@ -188,7 +188,7 @@ static struct gdsc vcodec1_gdsc = {
>>>>>        .pd = {
>>>>>            .name = "vcodec1_gdsc",
>>>>>        },
>>>>> -    .flags = HW_CTRL,
>>>>> +    .flags = HW_CTRL_TRIGGER,
>>>>>        .pwrsts = PWRSTS_OFF_ON,
>>>>>    };
>>>>>    static struct clk_regmap *video_cc_sm8150_clocks[] = {
>>>>> diff --git a/drivers/clk/qcom/videocc-sm8450.c
>>>>> b/drivers/clk/qcom/videocc-sm8450.c
>>>>> index
>>>>> f26c7eccb62e7eb8dbd022e2f01fa496eb570b3f..4cefcbbc020f201f19c75c20229415e0bdea2963
>>>>> 100644
>>>>> --- a/drivers/clk/qcom/videocc-sm8450.c
>>>>> +++ b/drivers/clk/qcom/videocc-sm8450.c
>>>>> @@ -347,7 +347,7 @@ static struct gdsc video_cc_mvs0_gdsc = {
>>>>>        },
>>>>>        .pwrsts = PWRSTS_OFF_ON,
>>>>>        .parent = &video_cc_mvs0c_gdsc.pd,
>>>>> -    .flags = RETAIN_FF_ENABLE | HW_CTRL,
>>>>> +    .flags = HW_CTRL_TRIGGER | RETAIN_FF_ENABLE,
>>>>>    };
>>>>>      static struct gdsc video_cc_mvs1c_gdsc = {
>>>>> @@ -372,7 +372,7 @@ static struct gdsc video_cc_mvs1_gdsc = {
>>>>>        },
>>>>>        .pwrsts = PWRSTS_OFF_ON,
>>>>>        .parent = &video_cc_mvs1c_gdsc.pd,
>>>>> -    .flags = RETAIN_FF_ENABLE | HW_CTRL,
>>>>> +    .flags = HW_CTRL_TRIGGER | RETAIN_FF_ENABLE,
>>>>>    };
>>>>>      static struct clk_regmap *video_cc_sm8450_clocks[] = {
>>>>>
>>>> Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
>>> Hi @Bjorn
>>>
>>> Could you help pick this into videocc?
>> This patch can not go if the venus patch hasn't been merged. Morover,
>> venus patch should directly preceed this one.
> yes, venus patch has been merged into kernel.
Better to drop the video driver patch which is merged and put the new version.
This would avoid such confusion.

Also add my RB tag
Reviewed-by: Vikash Garodia <quic_vgarodia@...cinc.com>

Regards,
Vikash