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1 | /* linux/arch/arm/mach-s5pc100/setup-sdhci.c |
2 | * | |
3 | * Copyright 2008 Samsung Electronics | |
4 | * | |
5 | * S5PC100 - Helper functions for settign up SDHCI device(s) (HSMMC) | |
6 | * | |
7 | * Based on mach-s3c6410/setup-sdhci.c | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
14 | #include <linux/kernel.h> | |
15 | #include <linux/types.h> | |
16 | #include <linux/interrupt.h> | |
17 | #include <linux/platform_device.h> | |
18 | #include <linux/io.h> | |
19 | ||
20 | #include <linux/mmc/card.h> | |
21 | #include <linux/mmc/host.h> | |
22 | ||
23 | #include <plat/regs-sdhci.h> | |
24 | #include <plat/sdhci.h> | |
25 | ||
26 | /* clock sources for the mmc bus clock, order as for the ctrl2[5..4] */ | |
27 | ||
28 | char *s5pc100_hsmmc_clksrcs[4] = { | |
aaeedff6 MS |
29 | [0] = "hsmmc", /* HCLK */ |
30 | /* [1] = "hsmmc", - duplicate HCLK entry */ | |
31 | [2] = "sclk_mmc", /* mmc_bus */ | |
32 | /* [3] = "48m", - note not successfully used yet */ | |
86cd4f5f KP |
33 | }; |
34 | ||
35 | ||
36 | void s5pc100_setup_sdhci0_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 | /* don't need to alter anything acording to card-type */ | |
44 | ||
45 | writel(S3C64XX_SDHCI_CONTROL4_DRIVE_9mA, r + S3C64XX_SDHCI_CONTROL4); | |
46 | ||
47 | ctrl2 = readl(r + S3C_SDHCI_CONTROL2); | |
48 | ctrl2 &= S3C_SDHCI_CTRL2_SELBASECLK_MASK; | |
49 | ctrl2 |= (S3C64XX_SDHCI_CTRL2_ENSTAASYNCCLR | | |
50 | S3C64XX_SDHCI_CTRL2_ENCMDCNFMSK | | |
51 | S3C_SDHCI_CTRL2_ENFBCLKRX | | |
52 | S3C_SDHCI_CTRL2_DFCNT_NONE | | |
53 | S3C_SDHCI_CTRL2_ENCLKOUTHOLD); | |
54 | ||
55 | if (ios->clock < 25 * 1000000) | |
56 | ctrl3 = (S3C_SDHCI_CTRL3_FCSEL3 | | |
57 | S3C_SDHCI_CTRL3_FCSEL2 | | |
58 | S3C_SDHCI_CTRL3_FCSEL1 | | |
59 | S3C_SDHCI_CTRL3_FCSEL0); | |
60 | else | |
61 | ctrl3 = (S3C_SDHCI_CTRL3_FCSEL1 | S3C_SDHCI_CTRL3_FCSEL0); | |
62 | ||
63 | writel(ctrl2, r + S3C_SDHCI_CONTROL2); | |
64 | writel(ctrl3, r + S3C_SDHCI_CONTROL3); | |
65 | } |