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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>
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Marek Szyprowski
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Ben Dooks
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May 20, 2010
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| /* linux/arch/arm/plat-s5pc1xx/setup-sdhci-gpio.c | ||
| * | ||
| * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd. | ||
| * http://www.samsung.com/ | ||
| * | ||
| * S5PV210 - 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> | ||
| #include <linux/mmc/host.h> | ||
| #include <linux/mmc/card.h> | ||
|
|
||
| #include <mach/gpio.h> | ||
| #include <plat/gpio-cfg.h> | ||
| #include <plat/regs-sdhci.h> | ||
|
|
||
| void s5pv210_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width) | ||
| { | ||
| unsigned int gpio; | ||
|
|
||
| /* Set all the necessary GPG0/GPG1 pins to special-function 2 */ | ||
| for (gpio = S5PV210_GPG0(0); gpio < S5PV210_GPG0(2); gpio++) { | ||
| s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); | ||
| s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | ||
| } | ||
| switch (width) { | ||
| case 8: | ||
| /* GPG1[3:6] special-funtion 3 */ | ||
| for (gpio = S5PV210_GPG1(3); gpio <= S5PV210_GPG1(6); gpio++) { | ||
| s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3)); | ||
| s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | ||
| } | ||
| case 4: | ||
| /* GPG0[3:6] special-funtion 2 */ | ||
| for (gpio = S5PV210_GPG0(3); gpio <= S5PV210_GPG0(6); gpio++) { | ||
| s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); | ||
| s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | ||
| } | ||
| default: | ||
| break; | ||
| } | ||
|
|
||
| s3c_gpio_setpull(S5PV210_GPG0(2), S3C_GPIO_PULL_UP); | ||
| s3c_gpio_cfgpin(S5PV210_GPG0(2), S3C_GPIO_SFN(2)); | ||
| } | ||
|
|
||
| void s5pv210_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width) | ||
| { | ||
| unsigned int gpio; | ||
|
|
||
| /* Set all the necessary GPG1[0:1] pins to special-function 2 */ | ||
| for (gpio = S5PV210_GPG1(0); gpio < S5PV210_GPG1(2); gpio++) { | ||
| s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); | ||
| s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | ||
| } | ||
|
|
||
| /* Data pin GPG1[3:6] to special-function 2 */ | ||
| for (gpio = S5PV210_GPG1(3); gpio <= S5PV210_GPG1(6); gpio++) { | ||
| s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); | ||
| s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | ||
| } | ||
|
|
||
| s3c_gpio_setpull(S5PV210_GPG1(2), S3C_GPIO_PULL_UP); | ||
| s3c_gpio_cfgpin(S5PV210_GPG1(2), S3C_GPIO_SFN(2)); | ||
| } | ||
|
|
||
| void s5pv210_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width) | ||
| { | ||
| unsigned int gpio; | ||
|
|
||
| /* Set all the necessary GPG2[0:1] pins to special-function 2 */ | ||
| for (gpio = S5PV210_GPG2(0); gpio < S5PV210_GPG2(2); gpio++) { | ||
| s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); | ||
| s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | ||
| } | ||
|
|
||
| switch (width) { | ||
| case 8: | ||
| /* Data pin GPG3[3:6] to special-function 3 */ | ||
| for (gpio = S5PV210_GPG3(3); gpio <= S5PV210_GPG3(6); gpio++) { | ||
| s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3)); | ||
| s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | ||
| } | ||
| case 4: | ||
| /* Data pin GPG2[3:6] to special-function 2 */ | ||
| for (gpio = S5PV210_GPG2(3); gpio <= S5PV210_GPG2(6); gpio++) { | ||
| s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); | ||
| s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); | ||
| } | ||
| default: | ||
| break; | ||
| } | ||
|
|
||
| s3c_gpio_setpull(S5PV210_GPG2(2), S3C_GPIO_PULL_UP); | ||
| s3c_gpio_cfgpin(S5PV210_GPG2(2), S3C_GPIO_SFN(2)); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| /* linux/arch/arm/mach-s5pv210/setup-sdhci.c | ||
| * | ||
| * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd. | ||
| * http://www.samsung.com/ | ||
| * | ||
| * S5PV210 - 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> | ||
|
|
||
| #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] */ | ||
|
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||
| char *s5pv210_hsmmc_clksrcs[4] = { | ||
| [0] = "hsmmc", /* HCLK */ | ||
| [1] = "hsmmc", /* HCLK */ | ||
| [2] = "sclk_mmc", /* mmc_bus */ | ||
| /*[4] = reserved */ | ||
| }; | ||
|
|
||
| void s5pv210_setup_sdhci_cfg_card(struct platform_device *dev, | ||
| void __iomem *r, | ||
| struct mmc_ios *ios, | ||
| struct mmc_card *card) | ||
| { | ||
| u32 ctrl2, ctrl3; | ||
|
|
||
| /* don't need to alter anything acording to card-type */ | ||
|
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||
| writel(S3C64XX_SDHCI_CONTROL4_DRIVE_9mA, r + S3C64XX_SDHCI_CONTROL4); | ||
|
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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); | ||
|
|
||
| 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); | ||
|
|
||
| writel(ctrl2, r + S3C_SDHCI_CONTROL2); | ||
| writel(ctrl3, r + S3C_SDHCI_CONTROL3); | ||
| } |
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