linux-kernel - Re: [PATCH 1/2] clk: qcom: videocc: Use HW_CTRL

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Message-ID: <zhco37pigrp4fh5alqx4xfxx3xhjitqlgw552vwiijka22bt4u@sl4ngzypwh4x>
Date: Fri, 22 Nov 2024 12:59:27 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Renjiang Han <quic_renjiang@...cinc.com>
Cc: Bjorn Andersson <andersson@...nel.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>, 
	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 1/2] clk: qcom: videocc: Use HW_CTRL_TRIGGER flag for
 video GDSC's

On Fri, Nov 22, 2024 at 04:01:45PM +0530, Renjiang Han wrote:
> From: Taniya Das <quic_tdas@...cinc.com>
> 
> The video driver will be using the newly introduced

'will be' or 'is using'? Or will be using it for these platforms? Is
there any kind of dependency between two patches in the series?

> 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 and SDM845.

Is it applicable to any other platforms? Why did you select just these
two?

> 
> Signed-off-by: Taniya Das <quic_tdas@...cinc.com>
> Signed-off-by: Renjiang Han <quic_renjiang@...cinc.com>
> ---
>  drivers/clk/qcom/videocc-sc7180.c | 2 +-
>  drivers/clk/qcom/videocc-sdm845.c | 4 ++--
>  2 files changed, 3 insertions(+), 3 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,
>  };
>  
> 
> -- 
> 2.34.1
> 

-- 
With best wishes
Dmitry