linux-kernel - Re: [PATCH] Revert "clk: divider: Switch from .round_rate to .determine

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Date:   Thu, 1 Jul 2021 21:51:20 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Stephen Boyd <sboyd@...nel.org>
Cc:     Michael Turquette <mturquette@...libre.com>,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: Re: [PATCH] Revert "clk: divider: Switch from .round_rate to
 .determine_rate by default"

On Thu, Jul 01, 2021 at 06:10:58PM -0700, Stephen Boyd wrote:
> This reverts commit db400ac1444b756030249ed4a35e53a68e557b59. We have
> drivers that are still using the .round_rate ops from here. We could
> implement both determine_rate and round_rate for these divider ops, but
> for now let's just kick out the commit that tried to change it and
> convert various drivers properly.
> 
> Reported-by: Guenter Roeck <linux@...ck-us.net>
> Fixes: db400ac1444b ("clk: divider: Switch from .round_rate to .determine_rate by default")
> Cc: Jerome Brunet <jbrunet@...libre.com>
> Cc: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
> Signed-off-by: Stephen Boyd <sboyd@...nel.org>

Acked-by: Guenter Roeck <linux@...ck-us.net>
Tested-by: Guenter Roeck <linux@...ck-us.net>

> ---
>  drivers/clk/clk-divider.c | 18 +++++++++---------
>  1 file changed, 9 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c
> index 9e05e81116af..87ba4966b0e8 100644
> --- a/drivers/clk/clk-divider.c
> +++ b/drivers/clk/clk-divider.c
> @@ -425,8 +425,8 @@ long divider_ro_round_rate_parent(struct clk_hw *hw, struct clk_hw *parent,
>  }
>  EXPORT_SYMBOL_GPL(divider_ro_round_rate_parent);
>  
> -static int clk_divider_determine_rate(struct clk_hw *hw,
> -				      struct clk_rate_request *req)
> +static long clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
> +				unsigned long *prate)
>  {
>  	struct clk_divider *divider = to_clk_divider(hw);
>  
> @@ -437,13 +437,13 @@ static int clk_divider_determine_rate(struct clk_hw *hw,
>  		val = clk_div_readl(divider) >> divider->shift;
>  		val &= clk_div_mask(divider->width);
>  
> -		return divider_ro_determine_rate(hw, req, divider->table,
> -						 divider->width,
> -						 divider->flags, val);
> +		return divider_ro_round_rate(hw, rate, prate, divider->table,
> +					     divider->width, divider->flags,
> +					     val);
>  	}
>  
> -	return divider_determine_rate(hw, req, divider->table, divider->width,
> -				      divider->flags);
> +	return divider_round_rate(hw, rate, prate, divider->table,
> +				  divider->width, divider->flags);
>  }
>  
>  int divider_get_val(unsigned long rate, unsigned long parent_rate,
> @@ -500,14 +500,14 @@ static int clk_divider_set_rate(struct clk_hw *hw, unsigned long rate,
>  
>  const struct clk_ops clk_divider_ops = {
>  	.recalc_rate = clk_divider_recalc_rate,
> -	.determine_rate = clk_divider_determine_rate,
> +	.round_rate = clk_divider_round_rate,
>  	.set_rate = clk_divider_set_rate,
>  };
>  EXPORT_SYMBOL_GPL(clk_divider_ops);
>  
>  const struct clk_ops clk_divider_ro_ops = {
>  	.recalc_rate = clk_divider_recalc_rate,
> -	.determine_rate = clk_divider_determine_rate,
> +	.round_rate = clk_divider_round_rate,
>  };
>  EXPORT_SYMBOL_GPL(clk_divider_ro_ops);
>  
> 
> base-commit: 498cc50b3fa99b545532dc433d53d3c0b889cc98
> -- 
> https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git/
> https://git.kernel.org/pub/scm/linux/kernel/git/sboyd/spmi.git
>