| Yauhen Kharuzhy | c29cfa6 | 2010-12-17 14:42:09 +0900 | [diff] [blame^] | 1 | /* linux/arch/arm/mach-s3c2416/setup-sdhci.c |
| 2 | * |
| 3 | * Copyright 2010 Promwad Innovation Company |
| 4 | * Yauhen Kharuzhy <yauhen.kharuzhy@promwad.com> |
| 5 | * |
| 6 | * S3C2416 - Helper functions for settign up SDHCI device(s) (HSMMC) |
| 7 | * |
| 8 | * Based on mach-s3c64xx/setup-sdhci.c |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2 as |
| 12 | * published by the Free Software Foundation. |
| 13 | */ |
| 14 | |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/types.h> |
| 17 | #include <linux/interrupt.h> |
| 18 | #include <linux/platform_device.h> |
| 19 | #include <linux/io.h> |
| 20 | |
| 21 | #include <linux/mmc/card.h> |
| 22 | #include <linux/mmc/host.h> |
| 23 | |
| 24 | #include <plat/regs-sdhci.h> |
| 25 | #include <plat/sdhci.h> |
| 26 | |
| 27 | /* clock sources for the mmc bus clock, order as for the ctrl2[5..4] */ |
| 28 | |
| 29 | char *s3c2416_hsmmc_clksrcs[4] = { |
| 30 | [0] = "hsmmc", |
| 31 | [1] = "hsmmc", |
| 32 | [2] = "hsmmc-if", |
| 33 | /* [3] = "48m", - note not successfully used yet */ |
| 34 | }; |
| 35 | |
| 36 | void s3c2416_setup_sdhci_cfg_card(struct platform_device *dev, |
| 37 | void __iomem *r, |
| 38 | struct mmc_ios *ios, |
| 39 | struct mmc_card *card) |
| 40 | { |
| 41 | u32 ctrl2, ctrl3; |
| 42 | |
| 43 | ctrl2 = __raw_readl(r + S3C_SDHCI_CONTROL2); |
| 44 | ctrl2 &= S3C_SDHCI_CTRL2_SELBASECLK_MASK; |
| 45 | ctrl2 |= (S3C64XX_SDHCI_CTRL2_ENSTAASYNCCLR | |
| 46 | S3C64XX_SDHCI_CTRL2_ENCMDCNFMSK | |
| 47 | S3C_SDHCI_CTRL2_ENFBCLKRX | |
| 48 | S3C_SDHCI_CTRL2_DFCNT_NONE | |
| 49 | S3C_SDHCI_CTRL2_ENCLKOUTHOLD); |
| 50 | |
| 51 | if (ios->clock < 25 * 1000000) |
| 52 | ctrl3 = (S3C_SDHCI_CTRL3_FCSEL3 | |
| 53 | S3C_SDHCI_CTRL3_FCSEL2 | |
| 54 | S3C_SDHCI_CTRL3_FCSEL1 | |
| 55 | S3C_SDHCI_CTRL3_FCSEL0); |
| 56 | else |
| 57 | ctrl3 = (S3C_SDHCI_CTRL3_FCSEL1 | S3C_SDHCI_CTRL3_FCSEL0); |
| 58 | |
| 59 | __raw_writel(ctrl2, r + S3C_SDHCI_CONTROL2); |
| 60 | __raw_writel(ctrl3, r + S3C_SDHCI_CONTROL3); |
| 61 | } |