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ARM: S3C2416: Add platform helpers for setup SDHCI
Samsung S3C2416 has two SDHCI controllers compatible with other
Samsung's SoCs (S3C64XX, S5PC100 etc...).
Add required platform setup code that the devices can be used with
sdhci-s3c driver.
Signed-off-by: Yauhen Kharuzhy <yauhen.kharuzhy@promwad.com>
[kgene.kim@samsung.com: change to __raw_{readl,writel} from {readl,writel}]
[kgene.kim@samsung.com: build error fixes]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>- Loading branch information
Yauhen Kharuzhy
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Kukjin Kim
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Jan 6, 2011
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,34 @@ | ||
| /* linux/arch/arm/plat-s3c2416/setup-sdhci-gpio.c | ||
| * | ||
| * Copyright 2010 Promwad Innovation Company | ||
| * Yauhen Kharuzhy <yauhen.kharuzhy@promwad.com> | ||
| * | ||
| * S3C2416 - Helper functions for setting up SDHCI device(s) GPIO (HSMMC) | ||
| * | ||
| * Based on mach-s3c64xx/setup-sdhci-gpio.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/gpio.h> | ||
|
|
||
| #include <mach/regs-gpio.h> | ||
| #include <plat/gpio-cfg.h> | ||
|
|
||
| void s3c2416_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width) | ||
| { | ||
| s3c_gpio_cfgrange_nopull(S3C2410_GPE(5), 2 + width, S3C_GPIO_SFN(2)); | ||
| } | ||
|
|
||
| void s3c2416_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width) | ||
| { | ||
| s3c_gpio_cfgrange_nopull(S3C2410_GPL(0), width, S3C_GPIO_SFN(2)); | ||
| s3c_gpio_cfgrange_nopull(S3C2410_GPL(8), 2, S3C_GPIO_SFN(2)); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| /* linux/arch/arm/mach-s3c2416/setup-sdhci.c | ||
| * | ||
| * Copyright 2010 Promwad Innovation Company | ||
| * Yauhen Kharuzhy <yauhen.kharuzhy@promwad.com> | ||
| * | ||
| * S3C2416 - Helper functions for settign up SDHCI device(s) (HSMMC) | ||
| * | ||
| * Based on mach-s3c64xx/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 *s3c2416_hsmmc_clksrcs[4] = { | ||
| [0] = "hsmmc", | ||
| [1] = "hsmmc", | ||
| [2] = "hsmmc-if", | ||
| /* [3] = "48m", - note not successfully used yet */ | ||
| }; | ||
|
|
||
| void s3c2416_setup_sdhci_cfg_card(struct platform_device *dev, | ||
| void __iomem *r, | ||
| struct mmc_ios *ios, | ||
| struct mmc_card *card) | ||
| { | ||
| u32 ctrl2, ctrl3; | ||
|
|
||
| ctrl2 = __raw_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); | ||
|
|
||
| __raw_writel(ctrl2, r + S3C_SDHCI_CONTROL2); | ||
| __raw_writel(ctrl3, r + S3C_SDHCI_CONTROL3); | ||
| } |
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