Signed-off-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx> Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> --- include/linux/mmc/exynos-dw_mmc.h | 61 +++++++++++++++++++++++++++++++++++++ 1 files changed, 61 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..3a6b08b --- /dev/null +++ b/include/linux/mmc/exynos-dw_mmc.h @@ -0,0 +1,61 @@ +/* + * 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 SDMCM_GET_DIVRATIO(x) ((x) >> 24 & 0x7) +#define SDMMC_CLK_RESET_DRV_SAMPLE (0x07070007); + +#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, ratio; + + regs = mci_readl(host, EXYNOS_CLKSEL); + ratio = SDMMC_GET_DIV_RATIO(reg); + if (!ratio) { + regs &= ~SDMMC_CLK_RESET_DRV_SAMPLE; + regs |= ratio; + if (ios->timing == MMC_TIMING_UHS_DDR50) + regs |= host->pdata->ddr_timing; + else + regs |= host->pdata->sdr_timing; + } else + regs &= ~SDMMC_CLK_RESET_DRV_SAMPLE; + + 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
