diff options
Diffstat (limited to 'arch/arm/mach-s3c6400')
| -rw-r--r-- | arch/arm/mach-s3c6400/Kconfig | 7 | ||||
| -rw-r--r-- | arch/arm/mach-s3c6400/Makefile | 4 | ||||
| -rw-r--r-- | arch/arm/mach-s3c6400/s3c6400.c | 7 | ||||
| -rw-r--r-- | arch/arm/mach-s3c6400/setup-sdhci.c | 63 |
4 files changed, 80 insertions, 1 deletions
diff --git a/arch/arm/mach-s3c6400/Kconfig b/arch/arm/mach-s3c6400/Kconfig index f0292a8..f5af212 100644 --- a/arch/arm/mach-s3c6400/Kconfig +++ b/arch/arm/mach-s3c6400/Kconfig @@ -14,11 +14,18 @@ config CPU_S3C6400 help Enable S3C6400 CPU support +config S3C6400_SETUP_SDHCI + bool + help + Internal configuration for default SDHCI + setup for S3C6400. + # S36400 Macchine support config MACH_SMDK6400 bool "SMDK6400" select CPU_S3C6400 select S3C_DEV_HSMMC + select S3C6400_SETUP_SDHCI help Machine support for the Samsung SMDK6400 diff --git a/arch/arm/mach-s3c6400/Makefile b/arch/arm/mach-s3c6400/Makefile index 07eac2b..df1ce4a 100644 --- a/arch/arm/mach-s3c6400/Makefile +++ b/arch/arm/mach-s3c6400/Makefile @@ -14,6 +14,10 @@ obj- := obj-$(CONFIG_CPU_S3C6400) += s3c6400.o +# setup support + +obj-$(CONFIG_S3C6400_SETUP_SDHCI) += setup-sdhci.o + # Machine support obj-$(CONFIG_MACH_SMDK6400) += mach-smdk6400.o diff --git a/arch/arm/mach-s3c6400/s3c6400.c b/arch/arm/mach-s3c6400/s3c6400.c index d11a427..bd17f3d 100644 --- a/arch/arm/mach-s3c6400/s3c6400.c +++ b/arch/arm/mach-s3c6400/s3c6400.c @@ -40,7 +40,12 @@ void __init s3c6400_map_io(void) { - /* the i2c device is directly compatible with s3c2440 */ + /* setup SDHCI */ + + s3c6400_default_sdhci0(); + s3c6400_default_sdhci1(); + + /* the i2c devices are directly compatible with s3c2440 */ s3c_i2c0_setname("s3c2440-i2c"); } diff --git a/arch/arm/mach-s3c6400/setup-sdhci.c b/arch/arm/mach-s3c6400/setup-sdhci.c new file mode 100644 index 0000000..b93dafb --- /dev/null +++ b/arch/arm/mach-s3c6400/setup-sdhci.c @@ -0,0 +1,63 @@ +/* linux/arch/arm/mach-s3c6410/setup-sdhci.c + * + * Copyright 2008 Simtec Electronics + * Copyright 2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * http://armlinux.simtec.co.uk/ + * + * S3C6410 - 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 *s3c6400_hsmmc_clksrcs[4] = { + [0] = "hsmmc", + [1] = "hsmmc", + [2] = "mmc_bus", + /* [3] = "48m", - note not succesfully used yet */ +}; + +void s3c6400_setup_sdhci_cfg_card(struct platform_device *dev, + void __iomem *r, + struct mmc_ios *ios, + struct mmc_card *card) +{ + u32 ctrl2, ctrl3; + + 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); + + printk(KERN_INFO "%s: CTRL 2=%08x, 3=%08x\n", __func__, ctrl2, ctrl3); + writel(ctrl2, r + S3C_SDHCI_CONTROL2); + writel(ctrl3, r + S3C_SDHCI_CONTROL3); +} + |
