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[ARM] S3C64XX: Add S3C6400 SDHCI setup support
Add support for S3C6400 SDHCI channels 0 and 1, making the GPIO code common to both S3C6400 and S3C6410. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Ben Dooks
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May 7, 2009
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| /* linux/arch/arm/mach-s3c6410/setup-sdhci.c | ||
| * | ||
| * Copyright 2008 Simtec Electronics | ||
| * Copyright 2008 Simtec Electronics | ||
| * Ben Dooks <ben@simtec.co.uk> | ||
| * http://armlinux.simtec.co.uk/ | ||
| * | ||
| * S3C6410 - Helper functions for settign up SDHCI device(s) (HSMMC) | ||
| * | ||
| * 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> | ||
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| #include <linux/mmc/card.h> | ||
| #include <linux/mmc/host.h> | ||
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| #include <plat/regs-sdhci.h> | ||
| #include <plat/sdhci.h> | ||
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| /* clock sources for the mmc bus clock, order as for the ctrl2[5..4] */ | ||
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| char *s3c6400_hsmmc_clksrcs[4] = { | ||
| [0] = "hsmmc", | ||
| [1] = "hsmmc", | ||
| [2] = "mmc_bus", | ||
| /* [3] = "48m", - note not succesfully used yet */ | ||
| }; | ||
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| void s3c6400_setup_sdhci_cfg_card(struct platform_device *dev, | ||
| void __iomem *r, | ||
| struct mmc_ios *ios, | ||
| struct mmc_card *card) | ||
| { | ||
| u32 ctrl2, ctrl3; | ||
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| 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); | ||
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| 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); | ||
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| printk(KERN_INFO "%s: CTRL 2=%08x, 3=%08x\n", __func__, ctrl2, ctrl3); | ||
| writel(ctrl2, r + S3C_SDHCI_CONTROL2); | ||
| writel(ctrl3, r + S3C_SDHCI_CONTROL3); | ||
| } | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| /* linux/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c | ||
| * | ||
| * Copyright 2008 Simtec Electronics | ||
| * Ben Dooks <ben@simtec.co.uk> | ||
| * http://armlinux.simtec.co.uk/ | ||
| * | ||
| * S3C64XX - Helper functions for setting up SDHCI device(s) GPIO (HSMMC) | ||
| * | ||
| * 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> | ||
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| #include <mach/gpio.h> | ||
| #include <plat/gpio-cfg.h> | ||
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| void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width) | ||
| { | ||
| unsigned int gpio; | ||
| unsigned int end; | ||
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| end = S3C64XX_GPG(2 + width); | ||
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| /* Set all the necessary GPG pins to special-function 0 */ | ||
| for (gpio = S3C64XX_GPG(0); gpio < end; gpio++) { | ||
| s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); | ||
| s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | ||
| } | ||
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| s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP); | ||
| s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(2)); | ||
| } | ||
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| void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width) | ||
| { | ||
| unsigned int gpio; | ||
| unsigned int end; | ||
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| end = S3C64XX_GPH(2 + width); | ||
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| /* Set all the necessary GPG pins to special-function 0 */ | ||
| for (gpio = S3C64XX_GPH(0); gpio < end; gpio++) { | ||
| s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); | ||
| s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | ||
| } | ||
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| s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP); | ||
| s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(3)); | ||
| } |