linux-kernel - RE: [PATCH v8 13/26] PM / devfreq: rockchip-dfi: Pass private data struct to internal functions

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Message-ID: <001801da0283$27db0f50$77912df0$@samsung.com>
Date:   Thu, 19 Oct 2023 20:55:29 +0900
From:   "Chanwoo Choi" <cw00.choi@...sung.com>
To:     "'Sascha Hauer'" <s.hauer@...gutronix.de>,
        <linux-rockchip@...ts.infradead.org>
Cc:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-pm@...r.kernel.org>,
        "'Heiko Stuebner'" <heiko@...ech.de>,
        "'Chanwoo Choi'" <chanwoo@...nel.org>,
        "'Kyungmin Park'" <kyungmin.park@...sung.com>,
        "'MyungJoo Ham'" <myungjoo.ham@...sung.com>,
        "'Will Deacon'" <will@...nel.org>,
        "'Mark Rutland'" <mark.rutland@....com>, <kernel@...gutronix.de>,
        "'Michael Riesch'" <michael.riesch@...fvision.net>,
        "'Robin Murphy'" <robin.murphy@....com>,
        "'Vincent Legoll'" <vincent.legoll@...il.com>,
        "'Rob Herring'" <robh+dt@...nel.org>,
        "'Krzysztof Kozlowski'" <krzysztof.kozlowski+dt@...aro.org>,
        "'Conor Dooley'" <conor+dt@...nel.org>,
        <devicetree@...r.kernel.org>,
        "'Sebastian Reichel'" <sebastian.reichel@...labora.com>
Subject: RE: [PATCH v8 13/26] PM / devfreq: rockchip-dfi: Pass private data
 struct to internal functions



> -----Original Message-----
> From: Sascha Hauer <s.hauer@...gutronix.de>
> Sent: Wednesday, October 18, 2023 3:17 PM
> To: linux-rockchip@...ts.infradead.org
> Cc: linux-arm-kernel@...ts.infradead.org; linux-kernel@...r.kernel.org;
> linux-pm@...r.kernel.org; Heiko Stuebner <heiko@...ech.de>; Chanwoo Choi
> <chanwoo@...nel.org>; Kyungmin Park <kyungmin.park@...sung.com>; MyungJoo
> Ham <myungjoo.ham@...sung.com>; Will Deacon <will@...nel.org>; Mark
> Rutland <mark.rutland@....com>; kernel@...gutronix.de; Michael Riesch
> <michael.riesch@...fvision.net>; Robin Murphy <robin.murphy@....com>;
> Vincent Legoll <vincent.legoll@...il.com>; Rob Herring
> <robh+dt@...nel.org>; Krzysztof Kozlowski
> <krzysztof.kozlowski+dt@...aro.org>; Conor Dooley <conor+dt@...nel.org>;
> devicetree@...r.kernel.org; Sebastian Reichel
> <sebastian.reichel@...labora.com>; Sascha Hauer <s.hauer@...gutronix.de>;
> Jonathan Cameron <Jonathan.Cameron@...wei.com>; Chanwoo Choi
> <cw00.choi@...sung.com>
> Subject: [PATCH v8 13/26] PM / devfreq: rockchip-dfi: Pass private data
> struct to internal functions
> 
> The internal functions do not need the struct devfreq_event_dev *, so pass
> them the struct rockchip_dfi *. This is a preparation for adding perf
> support later which doesn't have a struct devfreq_event_dev *.
> 
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
> Reviewed-by: Sebastian Reichel <sebastian.reichel@...labora.com>
> Acked-by: Chanwoo Choi <cw00.choi@...sung.com>
> Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de>
> ---
>  drivers/devfreq/event/rockchip-dfi.c | 15 ++++++---------
>  1 file changed, 6 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/devfreq/event/rockchip-dfi.c
> b/drivers/devfreq/event/rockchip-dfi.c
> index bdf421b248df9..d56a33d03db4c 100644
> --- a/drivers/devfreq/event/rockchip-dfi.c
> +++ b/drivers/devfreq/event/rockchip-dfi.c
> @@ -73,9 +73,8 @@ struct rockchip_dfi {
>  	unsigned int max_channels;
>  };
> 
> -static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev
> *edev)
> +static void rockchip_dfi_start_hardware_counter(struct rockchip_dfi
> +*dfi)
>  {
> -	struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev);
>  	void __iomem *dfi_regs = dfi->regs;
> 
>  	/* clear DDRMON_CTRL setting */
> @@ -103,18 +102,16 @@ static void
> rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev)
>  		       dfi_regs + DDRMON_CTRL);
>  }
> 
> -static void rockchip_dfi_stop_hardware_counter(struct devfreq_event_dev
> *edev)
> +static void rockchip_dfi_stop_hardware_counter(struct rockchip_dfi
> +*dfi)
>  {
> -	struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev);
>  	void __iomem *dfi_regs = dfi->regs;
> 
>  	writel_relaxed(HIWORD_UPDATE(0, DDRMON_CTRL_SOFTWARE_EN),
>  		       dfi_regs + DDRMON_CTRL);
>  }
> 
> -static void rockchip_dfi_read_counters(struct devfreq_event_dev *edev,
> struct dmc_count *count)
> +static void rockchip_dfi_read_counters(struct rockchip_dfi *dfi, struct
> +dmc_count *count)
>  {
> -	struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev);
>  	u32 i;
>  	void __iomem *dfi_regs = dfi->regs;
> 
> @@ -132,7 +129,7 @@ static int rockchip_dfi_disable(struct
> devfreq_event_dev *edev)  {
>  	struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev);
> 
> -	rockchip_dfi_stop_hardware_counter(edev);
> +	rockchip_dfi_stop_hardware_counter(dfi);
>  	clk_disable_unprepare(dfi->clk);
> 
>  	return 0;
> @@ -149,7 +146,7 @@ static int rockchip_dfi_enable(struct
> devfreq_event_dev *edev)
>  		return ret;
>  	}
> 
> -	rockchip_dfi_start_hardware_counter(edev);
> +	rockchip_dfi_start_hardware_counter(dfi);
>  	return 0;
>  }
> 
> @@ -167,7 +164,7 @@ static int rockchip_dfi_get_event(struct
> devfreq_event_dev *edev,
>  	u32 access = 0, total = 0;
>  	int i;
> 
> -	rockchip_dfi_read_counters(edev, &count);
> +	rockchip_dfi_read_counters(dfi, &count);
> 
>  	/* We can only report one channel, so find the busiest one */
>  	for (i = 0; i < dfi->max_channels; i++) {
> --
> 2.39.2


Applied it. Thanks

Best Regards,
Chanwoo Choi