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[ARM] S3C64XX: Add S3C6400 SDHCI setup support

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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>
This commit is contained in:
Ben Dooks 2009-03-25 11:01:24 +00:00
parent e074f98032
commit 4faf686763
10 changed files with 187 additions and 40 deletions
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7
arch/arm/mach-s3c6400/Kconfig
View file

@ -14,11 +14,18 @@ config CPU_S3C6400
help
Enable S3C6400 CPU support
config S3C6400_SETUP_SDHCI
bool
help
Internal configuration for default SDHCI
setup for S3C6400.
# S36400 Macchine support
config MACH_SMDK6400
bool "SMDK6400"
select CPU_S3C6400
select S3C_DEV_HSMMC
select S3C6400_SETUP_SDHCI
help
Machine support for the Samsung SMDK6400

4
arch/arm/mach-s3c6400/Makefile
View file

@ -14,6 +14,10 @@ obj- :=
obj-$(CONFIG_CPU_S3C6400) += s3c6400.o
# setup support
obj-$(CONFIG_S3C6400_SETUP_SDHCI) += setup-sdhci.o
# Machine support
obj-$(CONFIG_MACH_SMDK6400) += mach-smdk6400.o

7
arch/arm/mach-s3c6400/s3c6400.c
View file

@ -40,7 +40,12 @@
void __init s3c6400_map_io(void)
{
/* the i2c device is directly compatible with s3c2440 */
/* setup SDHCI */
s3c6400_default_sdhci0();
s3c6400_default_sdhci1();
/* the i2c devices are directly compatible with s3c2440 */
s3c_i2c0_setname("s3c2440-i2c");
}

63
arch/arm/mach-s3c6400/setup-sdhci.c Normal file
View file

@ -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>
#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 *s3c6400_hsmmc_clksrcs[4] = {
[0] = "hsmmc",
[1] = "hsmmc",
[2] = "mmc_bus",
/* [3] = "48m", - note not succesfully used yet */
};
void s3c6400_setup_sdhci_cfg_card(struct platform_device *dev,
void __iomem *r,
struct mmc_ios *ios,
struct mmc_card *card)
{
u32 ctrl2, ctrl3;
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);
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);
}

1
arch/arm/mach-s3c6410/Kconfig
View file

@ -16,6 +16,7 @@ config CPU_S3C6410
config S3C6410_SETUP_SDHCI
bool
select S3C64XX_SETUP_SDHCI_GPIO
help
Internal helper functions for S3C6410 based SDHCI systems

34
arch/arm/mach-s3c6410/setup-sdhci.c
View file

@ -21,8 +21,6 @@
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include <mach/gpio.h>
#include <plat/gpio-cfg.h>
#include <plat/regs-sdhci.h>
#include <plat/sdhci.h>
@ -35,22 +33,6 @@ char *s3c6410_hsmmc_clksrcs[4] = {
/* [3] = "48m", - note not succesfully used yet */
};
void s3c6410_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
{
unsigned int gpio;
unsigned int end;
end = S3C64XX_GPG(2 + width);
/* 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);
}
s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(2));
}
void s3c6410_setup_sdhci0_cfg_card(struct platform_device *dev,
void __iomem *r,
@ -84,19 +66,3 @@ void s3c6410_setup_sdhci0_cfg_card(struct platform_device *dev,
writel(ctrl3, r + S3C_SDHCI_CONTROL3);
}
void s3c6410_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
{
unsigned int gpio;
unsigned int end;
end = S3C64XX_GPH(2 + width);
/* 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);
}
s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(3));
}

50
arch/arm/plat-s3c/include/plat/sdhci.h
View file

@ -67,12 +67,52 @@ extern struct s3c_sdhci_platdata s3c_hsmmc1_def_platdata;
/* Helper function availablity */
extern void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
extern void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *, int w);
/* S3C6400 SDHCI setup */
#ifdef CONFIG_S3C6400_SETUP_SDHCI
extern char *s3c6400_hsmmc_clksrcs[4];
#ifdef CONFIG_S3C_DEV_HSMMC
extern void s3c6400_setup_sdhci_cfg_card(struct platform_device *dev,
void __iomem *r,
struct mmc_ios *ios,
struct mmc_card *card);
static inline void s3c6400_default_sdhci0(void)
{
s3c_hsmmc0_def_platdata.clocks = s3c6400_hsmmc_clksrcs;
s3c_hsmmc0_def_platdata.cfg_gpio = s3c64xx_setup_sdhci0_cfg_gpio;
s3c_hsmmc0_def_platdata.cfg_card = s3c6400_setup_sdhci_cfg_card;
}
#else
static inline void s3c6400_default_sdhci0(void) { }
#endif /* CONFIG_S3C_DEV_HSMMC */
#ifdef CONFIG_S3C_DEV_HSMMC1
static inline void s3c6400_default_sdhci1(void)
{
s3c_hsmmc1_def_platdata.clocks = s3c6400_hsmmc_clksrcs;
s3c_hsmmc1_def_platdata.cfg_gpio = s3c64xx_setup_sdhci1_cfg_gpio;
s3c_hsmmc1_def_platdata.cfg_card = s3c6400_setup_sdhci_cfg_card;
}
#else
static inline void s3c6400_default_sdhci1(void) { }
#endif /* CONFIG_S3C_DEV_HSMMC1 */
#else
static inline void s3c6400_default_sdhci0(void) { }
static inline void s3c6400_default_sdhci1(void) { }
#endif /* CONFIG_S3C6400_SETUP_SDHCI */
/* S3C6410 SDHCI setup */
#ifdef CONFIG_S3C6410_SETUP_SDHCI
extern char *s3c6410_hsmmc_clksrcs[4];
extern void s3c6410_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
extern void s3c6410_setup_sdhci1_cfg_gpio(struct platform_device *, int w);
extern void s3c6410_setup_sdhci0_cfg_card(struct platform_device *dev,
void __iomem *r,
struct mmc_ios *ios,
@ -82,7 +122,7 @@ extern void s3c6410_setup_sdhci0_cfg_card(struct platform_device *dev,
static inline void s3c6410_default_sdhci0(void)
{
s3c_hsmmc0_def_platdata.clocks = s3c6410_hsmmc_clksrcs;
s3c_hsmmc0_def_platdata.cfg_gpio = s3c6410_setup_sdhci0_cfg_gpio;
s3c_hsmmc0_def_platdata.cfg_gpio = s3c64xx_setup_sdhci0_cfg_gpio;
s3c_hsmmc0_def_platdata.cfg_card = s3c6410_setup_sdhci0_cfg_card;
}
#else
@ -93,7 +133,7 @@ static inline void s3c6410_default_sdhci0(void) { }
static inline void s3c6410_default_sdhci1(void)
{
s3c_hsmmc1_def_platdata.clocks = s3c6410_hsmmc_clksrcs;
s3c_hsmmc1_def_platdata.cfg_gpio = s3c6410_setup_sdhci1_cfg_gpio;
s3c_hsmmc1_def_platdata.cfg_gpio = s3c64xx_setup_sdhci1_cfg_gpio;
s3c_hsmmc1_def_platdata.cfg_card = s3c6410_setup_sdhci0_cfg_card;
}
#else

5
arch/arm/plat-s3c64xx/Kconfig
View file

@ -60,4 +60,9 @@ config S3C64XX_SETUP_FB_24BPP
help
Common setup code for S3C64XX with an 24bpp RGB display helper.
config S3C64XX_SETUP_SDHCI_GPIO
bool
help
Common setup code for S3C64XX SDHCI GPIO configurations
endif

1
arch/arm/plat-s3c64xx/Makefile
View file

@ -35,3 +35,4 @@ obj-$(CONFIG_PM) += irq-pm.o
obj-$(CONFIG_S3C64XX_SETUP_I2C0) += setup-i2c0.o
obj-$(CONFIG_S3C64XX_SETUP_I2C1) += setup-i2c1.o
obj-$(CONFIG_S3C64XX_SETUP_FB_24BPP) += setup-fb-24bpp.o
obj-$(CONFIG_S3C64XX_SETUP_SDHCI_GPIO) += setup-sdhci-gpio.o

55
arch/arm/plat-s3c64xx/setup-sdhci-gpio.c Normal file
View file

@ -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>
#include <mach/gpio.h>
#include <plat/gpio-cfg.h>
void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
{
unsigned int gpio;
unsigned int end;
end = S3C64XX_GPG(2 + width);
/* 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);
}
s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(2));
}
void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
{
unsigned int gpio;
unsigned int end;
end = S3C64XX_GPH(2 + width);
/* 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);
}
s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(3));
}