Hi Jaehoon,
Looks fine, just style corrections:
On Wed, Jan 12, 2011 at 09:30:41AM +0900, Jaehoon Chung wrote:
> This patch is added platform_8bit_width() function in sdhci-s3c.
^ adds
>
> We has 8-bit width support but is not a v3 controller.
^ have
> So we need platform_8bit_width() to support 8-bit buswidth.
>
> Also we need MMC_CAP_8_BIT_DATA, so we added them in platdata.
^ add it
>
> Signed-off-by: Jaehoon Chung <jh80.ch...@samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.p...@samsung.com>
> ---
> drivers/mmc/host/sdhci-s3c.c | 32 ++++++++++++++++++++++++++++++++
> 1 files changed, 32 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
> index 70cc3d7..4dc7d6d 100644
> --- a/drivers/mmc/host/sdhci-s3c.c
> +++ b/drivers/mmc/host/sdhci-s3c.c
> @@ -276,10 +276,39 @@ static void sdhci_cmu_set_clock(struct sdhci_host
> *host, unsigned int clock)
> host->clock = clock;
> }
>
> +/*
> + * sdhci_s3c_platform_8bit_width - support 8bit buswidth
> + *
> + * We has 8-bit width support but is not a v3 controller.
^ have
> + * So we add platform_8bit_width() and support 8bit width.
^ extra space here
> + **/
> +static int sdhci_s3c_platform_8bit_width(struct sdhci_host *host,
> + int bus_width)
This will (just) fit on one line.
> +{
> + u8 ctrl;
> +
> + ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
> +
> + if (bus_width == MMC_BUS_WIDTH_8)
> + ctrl |= SDHCI_CTRL_8BITBUS;
> + else
> + ctrl &= ~SDHCI_CTRL_8BITBUS;
> +
> + if (bus_width == MMC_BUS_WIDTH_4)
> + ctrl |= SDHCI_CTRL_4BITBUS;
> + else
> + ctrl &= ~SDHCI_CTRL_4BITBUS;
You could use a switch statement here.
> +
> + sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
> +
> + return 0;
> +}
> +
> static struct sdhci_ops sdhci_s3c_ops = {
> .get_max_clock = sdhci_s3c_get_max_clk,
> .set_clock = sdhci_s3c_set_clock,
> .get_min_clock = sdhci_s3c_get_min_clock,
> + .platform_8bit_width = sdhci_s3c_platform_8bit_width,
> };
>
> static void sdhci_s3c_notify_change(struct platform_device *dev, int state)
> @@ -472,6 +501,9 @@ static int __devinit sdhci_s3c_probe(struct
> platform_device *pdev)
> if (pdata->cd_type == S3C_SDHCI_CD_PERMANENT)
> host->mmc->caps = MMC_CAP_NONREMOVABLE;
>
> + if (pdata->host_caps)
> + host->mmc->caps |= pdata->host_caps;
> +
> host->quirks |= (SDHCI_QUIRK_32BIT_DMA_ADDR |
> SDHCI_QUIRK_32BIT_DMA_SIZE);
--
Chris Ball <c...@laptop.org> <http://printf.net/>
One Laptop Per Child
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