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ARM: S3C2416: Add platform helpers for setup SDHCI

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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>
This commit is contained in:
Yauhen Kharuzhy 2010-12-17 14:42:09 +09:00 committed by Kukjin Kim
parent 95d6791b4f
commit c29cfa6d3e
6 changed files with 151 additions and 0 deletions
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12
arch/arm/mach-s3c2416/Kconfig
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@ -31,6 +31,17 @@ config S3C2416_PM
help
Internal config node to apply S3C2416 power management
config S3C2416_SETUP_SDHCI
bool
select S3C2416_SETUP_SDHCI_GPIO
help
Internal helper functions for S3C2416 based SDHCI systems
config S3C2416_SETUP_SDHCI_GPIO
bool
help
Common setup code for SDHCI gpio.
menu "S3C2416 Machines"
config MACH_SMDK2416
@ -42,6 +53,7 @@ config MACH_SMDK2416
select S3C_DEV_HSMMC1
select S3C_DEV_NAND
select S3C_DEV_USB_HOST
select S3C2416_SETUP_SDHCI
select S3C2416_PM if PM
help
Say Y here if you are using an SMDK2416

4
arch/arm/mach-s3c2416/Makefile
View File

@ -14,6 +14,10 @@ obj-$(CONFIG_CPU_S3C2416) += irq.o
obj-$(CONFIG_S3C2416_PM) += pm.o
#obj-$(CONFIG_S3C2416_DMA) += dma.o
# Device setup
obj-$(CONFIG_S3C2416_SETUP_SDHCI) += setup-sdhci.o
obj-$(CONFIG_S3C2416_SETUP_SDHCI_GPIO) += setup-sdhci-gpio.o
# Machine support
obj-$(CONFIG_MACH_SMDK2416) += mach-smdk2416.o

5
arch/arm/mach-s3c2416/s3c2416.c
View File

@ -53,6 +53,7 @@
#include <plat/s3c2416.h>
#include <plat/devs.h>
#include <plat/cpu.h>
#include <plat/sdhci.h>
#include <plat/iic-core.h>
#include <plat/fb-core.h>
@ -115,6 +116,10 @@ void __init s3c2416_map_io(void)
s3c24xx_gpiocfg_default.set_pull = s3c_gpio_setpull_updown;
s3c24xx_gpiocfg_default.get_pull = s3c_gpio_getpull_updown;
/* initialize device information early */
s3c2416_default_sdhci0();
s3c2416_default_sdhci1();
iotable_init(s3c2416_iodesc, ARRAY_SIZE(s3c2416_iodesc));
}

34
arch/arm/mach-s3c2416/setup-sdhci-gpio.c Normal file
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@ -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));
}

61
arch/arm/mach-s3c2416/setup-sdhci.c Normal file
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@ -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);
}

35
arch/arm/plat-samsung/include/plat/sdhci.h
View File

@ -107,6 +107,8 @@ extern struct s3c_sdhci_platdata s3c_hsmmc3_def_platdata;
/* Helper function availablity */
extern void s3c2416_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
extern void s3c2416_setup_sdhci1_cfg_gpio(struct platform_device *, int w);
extern void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
extern void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *, int w);
extern void s5pc100_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
@ -122,6 +124,39 @@ extern void s5pv310_setup_sdhci1_cfg_gpio(struct platform_device *, int w);
extern void s5pv310_setup_sdhci2_cfg_gpio(struct platform_device *, int w);
extern void s5pv310_setup_sdhci3_cfg_gpio(struct platform_device *, int w);
/* S3C2416 SDHCI setup */
#ifdef CONFIG_S3C2416_SETUP_SDHCI
extern char *s3c2416_hsmmc_clksrcs[4];
extern void s3c2416_setup_sdhci_cfg_card(struct platform_device *dev,
void __iomem *r,
struct mmc_ios *ios,
struct mmc_card *card);
static inline void s3c2416_default_sdhci0(void)
{
#ifdef CONFIG_S3C_DEV_HSMMC
s3c_hsmmc0_def_platdata.clocks = s3c2416_hsmmc_clksrcs;
s3c_hsmmc0_def_platdata.cfg_gpio = s3c2416_setup_sdhci0_cfg_gpio;
s3c_hsmmc0_def_platdata.cfg_card = s3c2416_setup_sdhci_cfg_card;
#endif /* CONFIG_S3C_DEV_HSMMC */
}
static inline void s3c2416_default_sdhci1(void)
{
#ifdef CONFIG_S3C_DEV_HSMMC1
s3c_hsmmc1_def_platdata.clocks = s3c2416_hsmmc_clksrcs;
s3c_hsmmc1_def_platdata.cfg_gpio = s3c2416_setup_sdhci1_cfg_gpio;
s3c_hsmmc1_def_platdata.cfg_card = s3c2416_setup_sdhci_cfg_card;
#endif /* CONFIG_S3C_DEV_HSMMC1 */
}
#else
static inline void s3c2416_default_sdhci0(void) { }
static inline void s3c2416_default_sdhci1(void) { }
#endif /* CONFIG_S3C2416_SETUP_SDHCI */
/* S3C64XX SDHCI setup */
#ifdef CONFIG_S3C64XX_SETUP_SDHCI