linux-kernel - Re: [PATCH v1 3/6] clk: bcm2835: Switch to clk_divider.determine

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Date:   Mon, 5 Jul 2021 08:57:56 +0200
From:   Marek Szyprowski <m.szyprowski@...sung.com>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        linux-clk@...r.kernel.org, sboyd@...nel.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Nicolas Saenz Julienne <nsaenz@...nel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        linux-rpi-kernel@...ts.infradead.org
Subject: Re: [PATCH v1 3/6] clk: bcm2835: Switch to
 clk_divider.determine_rate

On 03.07.2021 00:51, Martin Blumenstingl wrote:
> .determine_rate is meant to replace .round_rate in CCF in the future.
> Switch over to .determine_rate now that clk_divider_ops has gained
> support for that.
>
> Cc: Marek Szyprowski <m.szyprowski@...sung.com>
> Cc: Nicolas Saenz Julienne <nsaenz@...nel.org>
> Cc: Florian Fainelli <f.fainelli@...il.com>
> Cc: Ray Jui <rjui@...adcom.com>
> Cc: Scott Branden <sbranden@...adcom.com>
> Cc: bcm-kernel-feedback-list@...adcom.com
> Cc: linux-rpi-kernel@...ts.infradead.org
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Tested-by: Marek Szyprowski <m.szyprowski@...sung.com>
> ---
>   drivers/clk/bcm/clk-bcm2835.c | 9 ++++-----
>   1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c
> index 1ac803e14fa3..a254512965eb 100644
> --- a/drivers/clk/bcm/clk-bcm2835.c
> +++ b/drivers/clk/bcm/clk-bcm2835.c
> @@ -805,11 +805,10 @@ static int bcm2835_pll_divider_is_on(struct clk_hw *hw)
>   	return !(cprman_read(cprman, data->a2w_reg) & A2W_PLL_CHANNEL_DISABLE);
>   }
>   
> -static long bcm2835_pll_divider_round_rate(struct clk_hw *hw,
> -					   unsigned long rate,
> -					   unsigned long *parent_rate)
> +static int bcm2835_pll_divider_determine_rate(struct clk_hw *hw,
> +					      struct clk_rate_request *req)
>   {
> -	return clk_divider_ops.round_rate(hw, rate, parent_rate);
> +	return clk_divider_ops.determine_rate(hw, req);
>   }
>   
>   static unsigned long bcm2835_pll_divider_get_rate(struct clk_hw *hw,
> @@ -901,7 +900,7 @@ static const struct clk_ops bcm2835_pll_divider_clk_ops = {
>   	.unprepare = bcm2835_pll_divider_off,
>   	.recalc_rate = bcm2835_pll_divider_get_rate,
>   	.set_rate = bcm2835_pll_divider_set_rate,
> -	.round_rate = bcm2835_pll_divider_round_rate,
> +	.determine_rate = bcm2835_pll_divider_determine_rate,
>   	.debug_init = bcm2835_pll_divider_debug_init,
>   };
>   

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland