[PATCH 4/8] mmc: sunxi: Cleanup "new timing mode" selection

[Jaehoon Chung]

On 5/25/21 8:30 AM, Andre Przywara wrote:
> Among the SoCs using the "new timing mode", only the A83T needs to
> explicitly switch to that mode.
> 
> By just defining the symbol for that one odd A83T bit to 0 for any other
> SoCs, we can always OR that in, and save the confusing nested #ifdefs.
> 
> Clean up the also confusing new_mode setting on the way.
> 
> Signed-off-by: Andre Przywara <andre.przywara at arm.com>

Reviewed-by: Jaehoon Chung <jh80.chung at samsung.com>

Best Regards,
Jaehoon Chung

> ---
>  drivers/mmc/sunxi_mmc.c | 15 ++++++---------
>  1 file changed, 6 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/mmc/sunxi_mmc.c b/drivers/mmc/sunxi_mmc.c
> index bc68debdad6..33cedb4edba 100644
> --- a/drivers/mmc/sunxi_mmc.c
> +++ b/drivers/mmc/sunxi_mmc.c
> @@ -23,6 +23,10 @@
>  #include <asm-generic/gpio.h>
>  #include <linux/delay.h>
>  
> +#ifndef CCM_MMC_CTRL_MODE_SEL_NEW
> +#define CCM_MMC_CTRL_MODE_SEL_NEW	0
> +#endif
> +
>  struct sunxi_mmc_plat {
>  	struct mmc_config cfg;
>  	struct mmc mmc;
> @@ -102,13 +106,10 @@ static int mmc_resource_init(int sdc_no)
>  static int mmc_set_mod_clk(struct sunxi_mmc_priv *priv, unsigned int hz)
>  {
>  	unsigned int pll, pll_hz, div, n, oclk_dly, sclk_dly;
> -	bool new_mode = true;
> +	bool new_mode = IS_ENABLED(CONFIG_MMC_SUNXI_HAS_NEW_MODE);
>  	bool calibrate = false;
>  	u32 val = 0;
>  
> -	if (!IS_ENABLED(CONFIG_MMC_SUNXI_HAS_NEW_MODE))
> -		new_mode = false;
> -
>  	/* A83T support new mode only on eMMC */
>  	if (IS_ENABLED(CONFIG_MACH_SUN8I_A83T) && priv->mmc_no != 2)
>  		new_mode = false;
> @@ -176,12 +177,8 @@ static int mmc_set_mod_clk(struct sunxi_mmc_priv *priv, unsigned int hz)
>  	}
>  
>  	if (new_mode) {
> -#ifdef CONFIG_MMC_SUNXI_HAS_NEW_MODE
> -#ifdef CONFIG_MMC_SUNXI_HAS_MODE_SWITCH
> -		val = CCM_MMC_CTRL_MODE_SEL_NEW;
> -#endif
> +		val |= CCM_MMC_CTRL_MODE_SEL_NEW;
>  		setbits_le32(&priv->reg->ntsr, SUNXI_MMC_NTSR_MODE_SEL_NEW);
> -#endif
>  	} else if (!calibrate) {
>  		/*
>  		 * Use hardcoded delay values if controller doesn't support
>