RE: [PATCHv2 2/3] mmc: dw_mmc: use the __mmc_of_parse to parse the slot node

[Seungwon Jeon <tgih.jun@samsung.com>]

Hi Jaehoon,

On Mon, May 26, 2014, Jaehoon Chung wrote:
> dw-mmc controller have the multiple slot.
Have -> has?

> Then it needs to parse the property for each slot.
> 
> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
> ---
> Changelog V2:
> 	- None
> 
>  drivers/mmc/host/dw_mmc.c |   25 ++++++-------------------
>  1 file changed, 6 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
> index 1ac227c..d4800f8 100644
> --- a/drivers/mmc/host/dw_mmc.c
> +++ b/drivers/mmc/host/dw_mmc.c
> @@ -1015,12 +1015,11 @@ static int dw_mci_get_cd(struct mmc_host *mmc)
>  {
>  	int present;
>  	struct dw_mci_slot *slot = mmc_priv(mmc);
> -	struct dw_mci_board *brd = slot->host->pdata;
>  	struct dw_mci *host = slot->host;
>  	int gpio_cd = mmc_gpio_get_cd(mmc);
> 
>  	/* Use platform get_cd function, else try onboard card detect */
> -	if (brd->quirks & DW_MCI_QUIRK_BROKEN_CARD_DETECTION)
> +	if (slot->quirks & DW_MCI_QUIRK_BROKEN_CARD_DETECTION)
>  		present = 1;
>  	else if (!IS_ERR_VALUE(gpio_cd))
>  		present = gpio_cd;
> @@ -2010,6 +2009,9 @@ static struct dw_mci_of_slot_quirks {
>  	{
>  		.quirk	= "disable-wp",
>  		.id	= DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT,
> +	}, {
> +		.quirk	= "broken-cd",
> +		.id	= DW_MCI_QUIRK_BROKEN_CARD_DETECTION,
>  	},
>  };
> 
> @@ -2088,7 +2090,7 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
>  	if (host->pdata->caps2)
>  		mmc->caps2 = host->pdata->caps2;
> 
> -	mmc_of_parse(mmc);
> +	__mmc_of_parse(mmc, dw_mci_of_find_slot_node(host->dev, slot->id));
> 
>  	if (host->pdata->blk_settings) {
>  		mmc->max_segs = host->pdata->blk_settings->max_segs;
> @@ -2231,23 +2233,13 @@ static inline bool dw_mci_ctrl_all_reset(struct dw_mci *host)
>  }
> 
>  #ifdef CONFIG_OF
> -static struct dw_mci_of_quirks {
> -	char *quirk;
> -	int id;
> -} of_quirks[] = {
> -	{
> -		.quirk	= "broken-cd",
> -		.id	= DW_MCI_QUIRK_BROKEN_CARD_DETECTION,
> -	},
> -};
> -
Moving broken-cd to slot_quirks is reasonable.
But I think of_quirks should be kept and we can add right quirks.
In cae of DW_MCI_QUIRK_IDMAC_DTO and DW_MCI_QUIRK_RETRY_DELAY,
we can handle those with dw_mci_of_quirks although we didn't add.

>  static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
>  {
>  	struct dw_mci_board *pdata;
>  	struct device *dev = host->dev;
>  	struct device_node *np = dev->of_node;
>  	const struct dw_mci_drv_data *drv_data = host->drv_data;
> -	int idx, ret;
> +	int ret;
>  	u32 clock_frequency;
> 
>  	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
> @@ -2264,11 +2256,6 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
>  		pdata->num_slots = 1;
>  	}
> 
> -	/* get quirks */
> -	for (idx = 0; idx < ARRAY_SIZE(of_quirks); idx++)
> -		if (of_get_property(np, of_quirks[idx].quirk, NULL))
> -			pdata->quirks |= of_quirks[idx].id;
> -
Same as above.

Thanks,
Seungwon Jeon

>  	if (of_property_read_u32(np, "fifo-depth", &pdata->fifo_depth))
>  		dev_info(dev, "fifo-depth property not found, using "
>  				"value of FIFOTH register as default\n");
> --
> 1.7.9.5
> 
> --
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