Re: [PATCH v28 05/11] soc: mediatek: refine code to use mtk_mmsys_update_bits API

[Chen-Yu Tsai]

On Mon, Nov 7, 2022 at 3:23 PM Nancy.Lin <nancy.lin@xxxxxxxxxxxx> wrote:
>
> Simplify code for update  mmsys reg.
>
> Signed-off-by: Nancy.Lin <nancy.lin@xxxxxxxxxxxx>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
> Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx>
> Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
> Tested-by: Bo-Chen Chen <rex-bc.chen@xxxxxxxxxxxx>
> Reviewed-by: Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>
> ---
>  drivers/soc/mediatek/mtk-mmsys.c | 45 ++++++++++++--------------------
>  1 file changed, 16 insertions(+), 29 deletions(-)
>
> diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c
> index 9a327eb5d9d7..73c8bd27e6ae 100644
> --- a/drivers/soc/mediatek/mtk-mmsys.c
> +++ b/drivers/soc/mediatek/mtk-mmsys.c

[...]

> @@ -124,27 +129,14 @@ void mtk_mmsys_ddp_disconnect(struct device *dev,
>  {
>         struct mtk_mmsys *mmsys = dev_get_drvdata(dev);
>         const struct mtk_mmsys_routes *routes = mmsys->data->routes;
> -       u32 reg;
>         int i;
>
>         for (i = 0; i < mmsys->data->num_routes; i++)
> -               if (cur == routes[i].from_comp && next == routes[i].to_comp) {
> -                       reg = readl_relaxed(mmsys->regs + routes[i].addr);
> -                       reg &= ~routes[i].mask;
> -                       writel_relaxed(reg, mmsys->regs + routes[i].addr);
> -               }
> +               if (cur == routes[i].from_comp && next == routes[i].to_comp)
> +                       mtk_mmsys_update_bits(mmsys, routes[i].addr, routes[i].mask, 0);
>  }
>  EXPORT_SYMBOL_GPL(mtk_mmsys_ddp_disconnect);
>
> -static void mtk_mmsys_update_bits(struct mtk_mmsys *mmsys, u32 offset, u32 mask, u32 val)
> -{
> -       u32 tmp;
> -
> -       tmp = readl_relaxed(mmsys->regs + offset);
> -       tmp = (tmp & ~mask) | val;
> -       writel_relaxed(tmp, mmsys->regs + offset);
> -}
> -
>  void mtk_mmsys_ddp_dpi_fmt_config(struct device *dev, u32 val)
>  {
>         if (val)

This hunk now doesn't apply due to

    soc: mediatek: Add all settings to mtk_mmsys_ddp_dpi_fmt_config func

touching mtk_mmsys_ddp_dpi_fmt_config() as well. It's trivial to resolve
though.

ChenYu