/* linux/arch/arm/mach-s5pc100/setup-sdhci.c * * Copyright 2008 Samsung Electronics * * S5PC100 - Helper functions for settign up SDHCI device(s) (HSMMC) * * Based on mach-s3c6410/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 *s5pc100_hsmmc_clksrcs[4] = { [0] = "hsmmc", [1] = "hsmmc", /* [2] = "mmc_bus", not yet succesfuuly used yet */ /* [3] = "48m", - note not succesfully used yet */ }; void s5pc100_setup_sdhci0_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); }