On Tue, Jun 15, 2010 at 08:27:48PM +0900, Kukjin Kim wrote:
> From: Lee Hyuk <hyuk1....@samsung.com>
>
> S5PV210 HSMMC host controller doesn't have the WP pin which should be
> connnected with SDMMC card WP pin. So if there are the cfg_wp and get_ro
> in pdata, configure the WP pin and replace get_ro function in sdhci with
> get_ro function in pdata.
>
> Signed-off-by: Hyuk Lee <hyuk1....@samsung.com>
> Signed-off-by: Kukjin Kim <kgene....@samsung.com>
> ---
> drivers/mmc/host/sdhci-s3c.c | 12 ++++++++++++
> drivers/mmc/host/sdhci.c | 3 +++
> drivers/mmc/host/sdhci.h | 3 +++
> 3 files changed, 18 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
> index af21792..857cbed 100644
> --- a/drivers/mmc/host/sdhci-s3c.c
> +++ b/drivers/mmc/host/sdhci-s3c.c
> @@ -311,6 +311,9 @@ static int __devinit sdhci_s3c_probe(struct
> platform_device *pdev)
> if (pdata->cfg_gpio)
> pdata->cfg_gpio(pdev, pdata->max_width);
>
> + if (pdata->get_ro)
> + sdhci_s3c_ops.get_ro = pdata->get_ro;
> +
> host->hw_name = "samsung-hsmmc";
> host->ops = &sdhci_s3c_ops;
> host->quirks = 0;
> @@ -335,6 +338,15 @@ static int __devinit sdhci_s3c_probe(struct
> platform_device *pdev)
> host->quirks |= (SDHCI_QUIRK_32BIT_DMA_ADDR |
> SDHCI_QUIRK_32BIT_DMA_SIZE);
>
> + /* Controller's WP pin donsn't connected with SD card. So we allocate
> + * a GPIO for getting WP data form SD card and use that data as
> + * the return value of the get_ro function */
> + host->quirks |= SDHCI_QUIRK_NO_WP_BIT;
I really think this should be a custom-wp quirk, not a we-don-have-wp
quirk.
> +
> + /* to configure gpio pin as a card write protection signal */
> + if (pdata->cfg_wp)
> + pdata->cfg_wp(pdev->id);
> +
> ret = sdhci_add_host(host);
> if (ret) {
> dev_err(dev, "sdhci_add_host() failed\n");
> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
> index c6d1bd8..2f8dfbc 100644
> --- a/drivers/mmc/host/sdhci.c
> +++ b/drivers/mmc/host/sdhci.c
> @@ -1192,6 +1192,9 @@ static int sdhci_get_ro(struct mmc_host *mmc)
>
> host = mmc_priv(mmc);
>
> + if ((host->quirks & SDHCI_QUIRK_NO_WP_BIT) && host->ops->get_ro)
> + return host->ops->get_ro(mmc);
> +
> spin_lock_irqsave(&host->lock, flags);
>
> if (host->flags & SDHCI_DEVICE_DEAD)
> diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
> index c846813..f479e22 100644
> --- a/drivers/mmc/host/sdhci.h
> +++ b/drivers/mmc/host/sdhci.h
> @@ -240,6 +240,8 @@ struct sdhci_host {
> #define SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN (1<<25)
> /* Controller cannot support End Attribute in NOP ADMA descriptor */
> #define SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC (1<<26)
> +/* Controller has no write-protect pin connected with SD card */
> +#define SDHCI_QUIRK_NO_WP_BIT (1<<27)
>
> int irq; /* Device IRQ */
> void __iomem * ioaddr; /* Mapped address */
> @@ -312,6 +314,7 @@ struct sdhci_ops {
> unsigned int (*get_max_clock)(struct sdhci_host *host);
> unsigned int (*get_min_clock)(struct sdhci_host *host);
> unsigned int (*get_timeout_clock)(struct sdhci_host *host);
> + int (*get_ro)(struct mmc_host *mmc);
> };
>
> #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
> --
> 1.6.2.5
>
>
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--
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