On Tue, Sep 28, 2010 at 8:36 AM, Wolfram Sang <w.sang@xxxxxxxxxxxxxx> wrote:
> We need to carry some information per host, e.g. the clock. Add a
> structure for it and initialize it in the generic part.
>
> Signed-off-by: Wolfram Sang <w.sang@xxxxxxxxxxxxxx>
> ---
>
> Change since last version:
>
> * include clk.h
>
> drivers/mmc/host/sdhci-pltfm.c | 7 +++++--
> drivers/mmc/host/sdhci-pltfm.h | 6 ++++++
> 2 files changed, 11 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
> index e045e3c..bf522a1 100644
> --- a/drivers/mmc/host/sdhci-pltfm.c
> +++ b/drivers/mmc/host/sdhci-pltfm.c
> @@ -55,6 +55,7 @@ static int __devinit sdhci_pltfm_probe(struct platform_device *pdev)
> struct sdhci_pltfm_data *pdata = pdev->dev.platform_data;
> const struct platform_device_id *platid = platform_get_device_id(pdev);
> struct sdhci_host *host;
> + struct sdhci_pltfm_host *pltfm_host;
> struct resource *iomem;
> int ret;
>
> @@ -72,15 +73,17 @@ static int __devinit sdhci_pltfm_probe(struct platform_device *pdev)
> "experience problems.\n");
>
> if (pdev->dev.parent)
> - host = sdhci_alloc_host(pdev->dev.parent, 0);
> + host = sdhci_alloc_host(pdev->dev.parent, sizeof(*pltfm_host));
> else
> - host = sdhci_alloc_host(&pdev->dev, 0);
> + host = sdhci_alloc_host(&pdev->dev, sizeof(*pltfm_host));
>
> if (IS_ERR(host)) {
> ret = PTR_ERR(host);
> goto err;
> }
>
> + pltfm_host = sdhci_priv(host);
> +
> host->hw_name = "platform";
> if (pdata && pdata->ops)
> host->ops = pdata->ops;
> diff --git a/drivers/mmc/host/sdhci-pltfm.h b/drivers/mmc/host/sdhci-pltfm.h
> index 900f329..1f96864 100644
> --- a/drivers/mmc/host/sdhci-pltfm.h
> +++ b/drivers/mmc/host/sdhci-pltfm.h
> @@ -11,8 +11,14 @@
> #ifndef _DRIVERS_MMC_SDHCI_PLTFM_H
> #define _DRIVERS_MMC_SDHCI_PLTFM_H
>
> +#include <linux/clk.h>
> #include <linux/sdhci-pltfm.h>
>
> +struct sdhci_pltfm_host {
> + struct clk *clk;
> + u32 scratchpad; /* to handle quirks across io-accessor calls */
> +};
> +
> extern struct sdhci_pltfm_data sdhci_cns3xxx_pdata;
>
> #endif /* _DRIVERS_MMC_SDHCI_PLTFM_H */
> --
> 1.7.1
>
>
how about adding one call back of alloc_host, then specific driver
could alloc additional private member, clk and scratchpad may not meet
different device's requirement.
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