[PATCH v2 6/9] drm/stm/dw_mipi_dsi-stm: convert from round_rate() to determine_rate()

[Yannick FERTRE]

Hi Brian,

thanks for the patch.

Acked-by: Yannick Fertre <yannick.fertre at foss.st.com>

Le 11/08/2025 à 12:56, Brian Masney a écrit :
> The round_rate() clk ops is deprecated, so migrate this driver from
> round_rate() to determine_rate() using the Coccinelle semantic patch
> on the cover letter of this series.
>
> Acked-by: Raphael Gallais-Pou <raphael.gallais-pou at foss.st.com>
> Signed-off-by: Brian Masney <bmasney at redhat.com>
> ---
>   drivers/gpu/drm/stm/dw_mipi_dsi-stm.c | 14 ++++++++------
>   1 file changed, 8 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c
> index 2c7bc064bc66c6a58903a207cbe8091a14231c2b..58eae6804cc82d174323744206be7046568b905c 100644
> --- a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c
> +++ b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c
> @@ -274,8 +274,8 @@ static unsigned long dw_mipi_dsi_clk_recalc_rate(struct clk_hw *hw,
>   	return (unsigned long)pll_out_khz * 1000;
>   }
>   
> -static long dw_mipi_dsi_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> -				       unsigned long *parent_rate)
> +static int dw_mipi_dsi_clk_determine_rate(struct clk_hw *hw,
> +					  struct clk_rate_request *req)
>   {
>   	struct dw_mipi_dsi_stm *dsi = clk_to_dw_mipi_dsi_stm(hw);
>   	unsigned int idf, ndiv, odf, pll_in_khz, pll_out_khz;
> @@ -283,14 +283,14 @@ static long dw_mipi_dsi_clk_round_rate(struct clk_hw *hw, unsigned long rate,
>   
>   	DRM_DEBUG_DRIVER("\n");
>   
> -	pll_in_khz = (unsigned int)(*parent_rate / 1000);
> +	pll_in_khz = (unsigned int)(req->best_parent_rate / 1000);
>   
>   	/* Compute best pll parameters */
>   	idf = 0;
>   	ndiv = 0;
>   	odf = 0;
>   
> -	ret = dsi_pll_get_params(dsi, pll_in_khz, rate / 1000,
> +	ret = dsi_pll_get_params(dsi, pll_in_khz, req->rate / 1000,
>   				 &idf, &ndiv, &odf);
>   	if (ret)
>   		DRM_WARN("Warning dsi_pll_get_params(): bad params\n");
> @@ -298,7 +298,9 @@ static long dw_mipi_dsi_clk_round_rate(struct clk_hw *hw, unsigned long rate,
>   	/* Get the adjusted pll out value */
>   	pll_out_khz = dsi_pll_get_clkout_khz(pll_in_khz, idf, ndiv, odf);
>   
> -	return pll_out_khz * 1000;
> +	req->rate = pll_out_khz * 1000;
> +
> +	return 0;
>   }
>   
>   static int dw_mipi_dsi_clk_set_rate(struct clk_hw *hw, unsigned long rate,
> @@ -351,7 +353,7 @@ static const struct clk_ops dw_mipi_dsi_stm_clk_ops = {
>   	.disable = dw_mipi_dsi_clk_disable,
>   	.is_enabled = dw_mipi_dsi_clk_is_enabled,
>   	.recalc_rate = dw_mipi_dsi_clk_recalc_rate,
> -	.round_rate = dw_mipi_dsi_clk_round_rate,
> +	.determine_rate = dw_mipi_dsi_clk_determine_rate,
>   	.set_rate = dw_mipi_dsi_clk_set_rate,
>   };
>   
>