Thomas Abraham wrote:
>
> The default controller configuration which was previously setup by
> platform helper functions is moved into the driver.
>
> Cc: Ben Dooks <ben-linux@xxxxxxxxx>
> Signed-off-by: Thomas Abraham <thomas.abraham@xxxxxxxxxx>
> ---
> drivers/mmc/host/sdhci-s3c.c | 28 +++++++++++++++++-----------
> 1 files changed, 17 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
> index 2bd7bf4..d891682 100644
> --- a/drivers/mmc/host/sdhci-s3c.c
> +++ b/drivers/mmc/host/sdhci-s3c.c
> @@ -203,17 +203,23 @@ static void sdhci_s3c_set_clock(struct sdhci_host
*host,
> unsigned int clock)
> writel(ctrl, host->ioaddr + S3C_SDHCI_CONTROL2);
> }
>
> - /* reconfigure the hardware for new clock rate */
> -
> - {
> - struct mmc_ios ios;
> -
> - ios.clock = clock;
> -
> - if (ourhost->pdata->cfg_card)
> - (ourhost->pdata->cfg_card)(ourhost->pdev, host-
> >ioaddr,
> - &ios, NULL);
> - }
> + /* reprogram default hardware configuration */
> + writel(S3C64XX_SDHCI_CONTROL4_DRIVE_9mA,
> + host->ioaddr + S3C64XX_SDHCI_CONTROL4);
Since there are above codes on only S5PC100 and S5PV210, I'm not sure above
is needed on other Samsung SoCs.
I need to sort out checking.
> +
> + ctrl = readl(host->ioaddr + S3C_SDHCI_CONTROL2);
+ ctrl &= S3C_SDHCI_CTRL2_SELBASECLK_MASK; ?
> + ctrl |= (S3C64XX_SDHCI_CTRL2_ENSTAASYNCCLR |
> + S3C64XX_SDHCI_CTRL2_ENCMDCNFMSK |
> + S3C_SDHCI_CTRL2_ENFBCLKRX |
> + S3C_SDHCI_CTRL2_DFCNT_NONE |
> + S3C_SDHCI_CTRL2_ENCLKOUTHOLD);
> + writel(ctrl, host->ioaddr + S3C_SDHCI_CONTROL2);
> +
> + /* reconfigure the controller for new clock rate */
> + ctrl = (S3C_SDHCI_CTRL3_FCSEL1 | S3C_SDHCI_CTRL3_FCSEL0);
> + if (clock < 25 * 1000000)
> + ctrl |= (S3C_SDHCI_CTRL3_FCSEL3 |
> S3C_SDHCI_CTRL3_FCSEL2);
> + writel(ctrl, host->ioaddr + S3C_SDHCI_CONTROL3);
> }
>
> /**
> --
Basically, it's good to move common codes and to remove that. But I'm not
sure we don't _really_ need to keep SoC specific control function such as
cfg_card().
Thanks.
Best regards,
Kgene.
--
Kukjin Kim <kgene.kim@xxxxxxxxxxx>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.
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