[PATCH 5/5] mmc: sdhci-esdhc-imx: eliminate enum imx_esdhc_type

[l.stach@pengutronix.de (Lucas Stach)]

Hi Shawn,

Am Montag, den 14.10.2013, 16:23 +0800 schrieb Shawn Guo:
> We now have 'flags' in struct pltfm_imx_data to identify the features
> and quirks for ESDHC variants running on different i.MX SoCs.  The enum
> imx_esdhc_type can be eliminated by interpreting the ESDHC variants with
> the ESDHC_FLAG_* flags.
> 
> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
> ---
>  drivers/mmc/host/sdhci-esdhc-imx.c |   52 +++++-------------------------------
>  1 file changed, 6 insertions(+), 46 deletions(-)
> 
> diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
> index f1e1385..f2cd5b0 100644
> --- a/drivers/mmc/host/sdhci-esdhc-imx.c
> +++ b/drivers/mmc/host/sdhci-esdhc-imx.c
> @@ -100,18 +100,15 @@
>   */
>  #define ESDHC_FLAG_USDHC		BIT(3)
>  
> -enum imx_esdhc_type {
> -	IMX25_ESDHC,
> -	IMX35_ESDHC,
> -	IMX51_ESDHC,
> -	IMX53_ESDHC,
> -	IMX6Q_USDHC,
> -};
> +#define IMX25_ESDHC	(ESDHC_FLAG_NO_DMAS_BITS | ESDHC_FLAG_ENGCM07207)
> +#define IMX35_ESDHC	(ESDHC_FLAG_ENGCM07207)
> +#define IMX51_ESDHC	(0)
> +#define IMX53_ESDHC	(ESDHC_FLAG_MULTIBLK_NO_INT)
> +#define IMX6Q_USDHC	(ESDHC_FLAG_USDHC)
>  
This looks really nasty to me, especially with the needed void pointer
cast you added in the previous patch.

Can you please introduce a proper driver data struct, with the flags
field in it? This will make this thing a lot cleaner, more future proof
and shouldn't add any overhead in the generated code.

Regards,
Lucas
>  struct pltfm_imx_data {
>  	int flags;
>  	u32 scratchpad;
> -	enum imx_esdhc_type devtype;
>  	struct pinctrl *pinctrl;
>  	struct pinctrl_state *pins_default;
>  	struct pinctrl_state *pins_100mhz;
> @@ -154,31 +151,6 @@ static const struct of_device_id imx_esdhc_dt_ids[] = {
>  };
>  MODULE_DEVICE_TABLE(of, imx_esdhc_dt_ids);
>  
> -static inline int is_imx25_esdhc(struct pltfm_imx_data *data)
> -{
> -	return data->devtype == IMX25_ESDHC;
> -}
> -
> -static inline int is_imx35_esdhc(struct pltfm_imx_data *data)
> -{
> -	return data->devtype == IMX35_ESDHC;
> -}
> -
> -static inline int is_imx51_esdhc(struct pltfm_imx_data *data)
> -{
> -	return data->devtype == IMX51_ESDHC;
> -}
> -
> -static inline int is_imx53_esdhc(struct pltfm_imx_data *data)
> -{
> -	return data->devtype == IMX53_ESDHC;
> -}
> -
> -static inline int is_imx6q_usdhc(struct pltfm_imx_data *data)
> -{
> -	return data->devtype == IMX6Q_USDHC;
> -}
> -
>  static inline int esdhc_is_usdhc(struct pltfm_imx_data *data)
>  {
>  	return !!(data->flags & ESDHC_FLAG_USDHC);
> @@ -866,19 +838,10 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
>  		goto free_sdhci;
>  	}
>  
> -	imx_data->devtype = of_id ? (enum imx_esdhc_type) of_id->data :
> +	imx_data->flags = of_id ? (int) of_id->data :
>  				    pdev->id_entry->driver_data;
>  	pltfm_host->priv = imx_data;
>  
> -	if (is_imx25_esdhc(imx_data))
> -		imx_data->flags |= ESDHC_FLAG_NO_DMAS_BITS;
> -
> -	if (is_imx25_esdhc(imx_data) || is_imx35_esdhc(imx_data))
> -		imx_data->flags |= ESDHC_FLAG_ENGCM07207;
> -
> -	if (is_imx6q_usdhc(imx_data))
> -		imx_data->flags |= ESDHC_FLAG_USDHC;
> -
>  	imx_data->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
>  	if (IS_ERR(imx_data->clk_ipg)) {
>  		err = PTR_ERR(imx_data->clk_ipg);
> @@ -924,9 +887,6 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
>  		host->quirks |= SDHCI_QUIRK_NO_MULTIBLOCK
>  			| SDHCI_QUIRK_BROKEN_ADMA;
>  
> -	if (is_imx53_esdhc(imx_data))
> -		imx_data->flags |= ESDHC_FLAG_MULTIBLK_NO_INT;
> -
>  	/*
>  	 * The imx6q ROM code will change the default watermark level setting
>  	 * to something insane.  Change it back here.

-- 
Pengutronix e.K.                           | Lucas Stach                 |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-5076 |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |