diff options
author | Marek Szyprowski <m.szyprowski@samsung.com> | 2010-05-20 02:13:07 -0400 |
---|---|---|
committer | Ben Dooks <ben-linux@fluff.org> | 2010-05-20 05:24:03 -0400 |
commit | e6f66a9f9668762f2c3f47728b29781ffc7fbad2 (patch) | |
tree | 886346d81f6574693ce2b8dbb1247c89314ad6b7 /arch/arm/mach-s5pv210/setup-sdhci.c | |
parent | c8d833bf5830f141c4680dae8f617d0d0a33605d (diff) |
ARM: S5PV210: add common HSMMC device helpers
This patch adds sdhci platform helpers required by sdhci-s3c driver.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/mach-s5pv210/setup-sdhci.c')
-rw-r--r-- | arch/arm/mach-s5pv210/setup-sdhci.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/arm/mach-s5pv210/setup-sdhci.c b/arch/arm/mach-s5pv210/setup-sdhci.c new file mode 100644 index 000000000000..51815ec60c2a --- /dev/null +++ b/arch/arm/mach-s5pv210/setup-sdhci.c | |||
@@ -0,0 +1,63 @@ | |||
1 | /* linux/arch/arm/mach-s5pv210/setup-sdhci.c | ||
2 | * | ||
3 | * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd. | ||
4 | * http://www.samsung.com/ | ||
5 | * | ||
6 | * S5PV210 - Helper functions for settign up SDHCI device(s) (HSMMC) | ||
7 | * | ||
8 | * This program is free software; you can redistribute it and/or modify | ||
9 | * it under the terms of the GNU General Public License version 2 as | ||
10 | * published by the Free Software Foundation. | ||
11 | */ | ||
12 | |||
13 | #include <linux/kernel.h> | ||
14 | #include <linux/types.h> | ||
15 | #include <linux/interrupt.h> | ||
16 | #include <linux/platform_device.h> | ||
17 | #include <linux/io.h> | ||
18 | |||
19 | #include <linux/mmc/card.h> | ||
20 | #include <linux/mmc/host.h> | ||
21 | |||
22 | #include <plat/regs-sdhci.h> | ||
23 | #include <plat/sdhci.h> | ||
24 | |||
25 | /* clock sources for the mmc bus clock, order as for the ctrl2[5..4] */ | ||
26 | |||
27 | char *s5pv210_hsmmc_clksrcs[4] = { | ||
28 | [0] = "hsmmc", /* HCLK */ | ||
29 | [1] = "hsmmc", /* HCLK */ | ||
30 | [2] = "sclk_mmc", /* mmc_bus */ | ||
31 | /*[4] = reserved */ | ||
32 | }; | ||
33 | |||
34 | void s5pv210_setup_sdhci_cfg_card(struct platform_device *dev, | ||
35 | void __iomem *r, | ||
36 | struct mmc_ios *ios, | ||
37 | struct mmc_card *card) | ||
38 | { | ||
39 | u32 ctrl2, ctrl3; | ||
40 | |||
41 | /* don't need to alter anything acording to card-type */ | ||
42 | |||
43 | writel(S3C64XX_SDHCI_CONTROL4_DRIVE_9mA, r + S3C64XX_SDHCI_CONTROL4); | ||
44 | |||
45 | ctrl2 = readl(r + S3C_SDHCI_CONTROL2); | ||
46 | ctrl2 &= S3C_SDHCI_CTRL2_SELBASECLK_MASK; | ||
47 | ctrl2 |= (S3C64XX_SDHCI_CTRL2_ENSTAASYNCCLR | | ||
48 | S3C64XX_SDHCI_CTRL2_ENCMDCNFMSK | | ||
49 | S3C_SDHCI_CTRL2_ENFBCLKRX | | ||
50 | S3C_SDHCI_CTRL2_DFCNT_NONE | | ||
51 | S3C_SDHCI_CTRL2_ENCLKOUTHOLD); | ||
52 | |||
53 | if (ios->clock < 25 * 1000000) | ||
54 | ctrl3 = (S3C_SDHCI_CTRL3_FCSEL3 | | ||
55 | S3C_SDHCI_CTRL3_FCSEL2 | | ||
56 | S3C_SDHCI_CTRL3_FCSEL1 | | ||
57 | S3C_SDHCI_CTRL3_FCSEL0); | ||
58 | else | ||
59 | ctrl3 = (S3C_SDHCI_CTRL3_FCSEL1 | S3C_SDHCI_CTRL3_FCSEL0); | ||
60 | |||
61 | writel(ctrl2, r + S3C_SDHCI_CONTROL2); | ||
62 | writel(ctrl3, r + S3C_SDHCI_CONTROL3); | ||
63 | } | ||