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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-01-15 13:24:02 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-01-15 13:24:02 +0000 |
| commit | bbba75606963c82febf7bd2761ea848ac5d1a1bb (patch) | |
| tree | 50880b4539c578c407f6c1aa605fddf5e371bb7e /arch/arm/mach-s3c2416/setup-sdhci.c | |
| parent | 073154459b80a43f7e4f088b11c93c8e9cb07f14 (diff) | |
| parent | ccbc87693dcb428443a72d644e63484676517c2d (diff) | |
Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into devel-stable
Diffstat (limited to 'arch/arm/mach-s3c2416/setup-sdhci.c')
| -rw-r--r-- | arch/arm/mach-s3c2416/setup-sdhci.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2416/setup-sdhci.c b/arch/arm/mach-s3c2416/setup-sdhci.c new file mode 100644 index 00000000000..ed34fad8f2c --- /dev/null +++ b/arch/arm/mach-s3c2416/setup-sdhci.c @@ -0,0 +1,61 @@ +/* linux/arch/arm/mach-s3c2416/setup-sdhci.c + * + * Copyright 2010 Promwad Innovation Company + * Yauhen Kharuzhy <yauhen.kharuzhy@promwad.com> + * + * S3C2416 - Helper functions for settign up SDHCI device(s) (HSMMC) + * + * Based on mach-s3c64xx/setup-sdhci.c + * + * 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 *s3c2416_hsmmc_clksrcs[4] = { + [0] = "hsmmc", + [1] = "hsmmc", + [2] = "hsmmc-if", + /* [3] = "48m", - note not successfully used yet */ +}; + +void s3c2416_setup_sdhci_cfg_card(struct platform_device *dev, + void __iomem *r, + struct mmc_ios *ios, + struct mmc_card *card) +{ + u32 ctrl2, ctrl3; + + ctrl2 = __raw_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); + + __raw_writel(ctrl2, r + S3C_SDHCI_CONTROL2); + __raw_writel(ctrl3, r + S3C_SDHCI_CONTROL3); +} |