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| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2010-05-20 08:13:07 +0200 |
|---|---|---|
| committer | Ben Dooks <ben-linux@fluff.org> | 2010-05-20 18:24:03 +0900 |
| commit | e6f66a9f9668762f2c3f47728b29781ffc7fbad2 (patch) | |
| tree | 886346d81f6574693ce2b8dbb1247c89314ad6b7 /arch/arm/mach-s5pv210/setup-sdhci.c | |
| parent | c8d833bf5830f141c4680dae8f617d0d0a33605d (diff) | |
| download | linux-e6f66a9f9668762f2c3f47728b29781ffc7fbad2.tar.gz linux-e6f66a9f9668762f2c3f47728b29781ffc7fbad2.tar.bz2 linux-e6f66a9f9668762f2c3f47728b29781ffc7fbad2.zip | |
ARM: S5PV210: add common HSMMC device helpers
This patch adds sdhci platform helpers required by sdhci-s3c driver.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/mach-s5pv210/setup-sdhci.c')
| -rw-r--r-- | arch/arm/mach-s5pv210/setup-sdhci.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/arm/mach-s5pv210/setup-sdhci.c b/arch/arm/mach-s5pv210/setup-sdhci.c new file mode 100644 index 000000000000..51815ec60c2a --- /dev/null +++ b/arch/arm/mach-s5pv210/setup-sdhci.c @@ -0,0 +1,63 @@ +/* linux/arch/arm/mach-s5pv210/setup-sdhci.c + * + * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5PV210 - Helper functions for settign up SDHCI device(s) (HSMMC) + * + * 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. +*/ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/io.h> + +#include <linux/mmc/card.h> +#include <linux/mmc/host.h> + +#include <plat/regs-sdhci.h> +#include <plat/sdhci.h> + +/* clock sources for the mmc bus clock, order as for the ctrl2[5..4] */ + +char *s5pv210_hsmmc_clksrcs[4] = { + [0] = "hsmmc", /* HCLK */ + [1] = "hsmmc", /* HCLK */ + [2] = "sclk_mmc", /* mmc_bus */ + /*[4] = reserved */ +}; + +void s5pv210_setup_sdhci_cfg_card(struct platform_device *dev, + void __iomem *r, + struct mmc_ios *ios, + struct mmc_card *card) +{ + u32 ctrl2, ctrl3; + + /* don't need to alter anything acording to card-type */ + + writel(S3C64XX_SDHCI_CONTROL4_DRIVE_9mA, r + S3C64XX_SDHCI_CONTROL4); + + ctrl2 = readl(r + S3C_SDHCI_CONTROL2); + ctrl2 &= S3C_SDHCI_CTRL2_SELBASECLK_MASK; + ctrl2 |= (S3C64XX_SDHCI_CTRL2_ENSTAASYNCCLR | + S3C64XX_SDHCI_CTRL2_ENCMDCNFMSK | + S3C_SDHCI_CTRL2_ENFBCLKRX | + S3C_SDHCI_CTRL2_DFCNT_NONE | + S3C_SDHCI_CTRL2_ENCLKOUTHOLD); + + if (ios->clock < 25 * 1000000) + ctrl3 = (S3C_SDHCI_CTRL3_FCSEL3 | + S3C_SDHCI_CTRL3_FCSEL2 | + S3C_SDHCI_CTRL3_FCSEL1 | + S3C_SDHCI_CTRL3_FCSEL0); + else + ctrl3 = (S3C_SDHCI_CTRL3_FCSEL1 | S3C_SDHCI_CTRL3_FCSEL0); + + writel(ctrl2, r + S3C_SDHCI_CONTROL2); + writel(ctrl3, r + S3C_SDHCI_CONTROL3); +} |