On Friday, August 24, 2012, Jaehoon Chung <jh80.chung@xxxxxxxxxxx> wrote: > On 08/24/2012 12:57 PM, Seungwon Jeon wrote: > > On Thursday, August 23, 2012, Jaehoon Chung <jh80.chung@xxxxxxxxxxx> wrote: > >> Signed-off-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx> > >> Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> > >> --- > >> include/linux/mmc/exynos-dw_mmc.h | 55 +++++++++++++++++++++++++++++++++++++ > >> 1 files changed, 55 insertions(+), 0 deletions(-) > >> create mode 100644 include/linux/mmc/exynos-dw_mmc.h > >> > >> diff --git a/include/linux/mmc/exynos-dw_mmc.h b/include/linux/mmc/exynos-dw_mmc.h > >> new file mode 100644 > >> index 0000000..03444c2 > >> --- /dev/null > >> +++ b/include/linux/mmc/exynos-dw_mmc.h > >> @@ -0,0 +1,55 @@ > >> +/* > >> + * Synopsys DesignWare Multimedia Card Interface driver > >> + * > >> + * Copyright (c) 2012 Samsung Electronics Co., Ltd. > >> + * http://www.samsung.com > >> + * > >> + * Header file for Exynos specific register > >> + * > >> + * This program is free software; you can redistribute it and/or modify > >> + * it under the terms of the GNU General Public License version 2 as > >> + * published by the Free Software Foundation. > >> + */ > >> + > >> +#ifndef _EXYNOS_DW_MMC_H > >> +#define _EXYNOS_DW_MMC_H > >> +#include <linux/mmc/dw_mmc.h> > >> +#include <linux/mmc/host.h> > >> + > >> +#define SDMMC_EXYNOS_CLKSEL 0x09C > >> + > >> +#define SDMMC_GET_CLK_DRV(x) ((x) >> 16 & 0x7) > >> +#define SDMMC_GET_CLK_SAMPLE(x) ((x) & 0x7) > >> +#define SDMMC_CLK_RESET_DRV_SAMPLE (0x00070007); > > Could you check the width of register field? > > There is some difference between ExynosX. > > It should cover all. > I checked the Exynos4 and Exynos5. > So i used the 0x7. > If i miss something, let me know. In case of Eyxnos4210, only 2 bits are used. And new field(DIVRATIO) is added in Exynos5. It needs to check DIVRATIO for SDMMC_CLK_RESET_DRV_SAMPLE. Thanks, Seungwon Jeon. > > Best Regards, > Jaehoon Chung > > > >> + > >> +#define mci_readl(dev, reg) \ > >> + __raw_readl((dev)->regs + SDMMC_##reg) > >> +#define mci_writel(dev, reg, value) \ > >> + __raw_writel((value), (dev)->regs + SDMMC_##reg) > >> + > >> +static inline int exynos_get_clk_drv(struct dw_mci *host) > >> +{ > >> + return SDMMC_GET_CLK_DRV(mci_readl(host, EXYNOS_CLKSEL)); > >> +} > >> + > >> +static inline int exynos_get_clk_sample(struct dw_mci *host) > >> +{ > >> + return SDMMC_GET_CLK_DRV(mci_readl(host, EXYNOS_CLKSEL)); > >> +} > >> + > >> +static inline void exynos_set_clk_drv_sample(struct dw_mci *host, > >> + struct mmc_ios *ios) > >> +{ > >> + u32 regs; > >> + > >> + regs = mci_readl(host, EXYNOS_CLKSEL); > >> + regs &= ~SDMMC_CLK_RESET_DRV_SAMPLE; > >> + if (ios->timing == MMC_TIMING_UHS_DDR50) > >> + regs |= host->pdata->ddr_timing; > >> + else > >> + regs |= host->pdata->sdr_timing; > >> + > >> + mci_writel(host, EXYNOS_CLKSEL, regs); > >> +} > >> + > >> +#endif /* _EXYNOS_DW_MMC_H */ > >> -- > >> 1.7.4.1 > >> -- > >> To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > >> the body of a message to majordomo@xxxxxxxxxxxxxxx > >> More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
