[ARM] S3C6410: Add helper for setting SDHCI device information
Add the necessary helper functions for setting up the SDHCI device information. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Ben Dooks
parent
ea522c7a54
commit
5cc7fd88fc
|
|
@ -14,9 +14,15 @@ config CPU_S3C6410
|
|||
help
|
||||
Enable S3C6410 CPU support
|
||||
|
||||
config S3C6410_SETUP_SDHCI
|
||||
bool
|
||||
help
|
||||
Internal helper functions for S3C6410 based SDHCI systems
|
||||
|
||||
config MACH_SMDK6410
|
||||
bool "SMDK6410"
|
||||
select CPU_S3C6410
|
||||
select S3C_DEV_HSMMC
|
||||
select S3C6410_SETUP_SDHCI
|
||||
help
|
||||
Machine support for the Samsung SMDK6410
|
||||
|
|
|
|||
|
|
@ -14,6 +14,10 @@ obj- :=
|
|||
|
||||
obj-$(CONFIG_CPU_S3C6410) += cpu.o
|
||||
|
||||
# Helper and device support
|
||||
|
||||
obj-$(CONFIG_S3C6410_SETUP_SDHCI) += setup-sdhci.o
|
||||
|
||||
# machine support
|
||||
|
||||
obj-$(CONFIG_MACH_SMDK6410) += mach-smdk6410.o
|
||||
|
|
|
|||
|
|
@ -35,6 +35,7 @@
|
|||
#include <plat/cpu.h>
|
||||
#include <plat/devs.h>
|
||||
#include <plat/clock.h>
|
||||
#include <plat/sdhci.h>
|
||||
#include <plat/s3c6400.h>
|
||||
#include <plat/s3c6410.h>
|
||||
|
||||
|
|
@ -51,6 +52,9 @@ static struct map_desc s3c6410_iodesc[] __initdata = {
|
|||
void __init s3c6410_map_io(void)
|
||||
{
|
||||
iotable_init(s3c6410_iodesc, ARRAY_SIZE(s3c6410_iodesc));
|
||||
|
||||
/* initialise device information early */
|
||||
s3c6410_default_sdhci0();
|
||||
}
|
||||
|
||||
void __init s3c6410_init_clocks(int xtal)
|
||||
|
|
|
|||
|
|
@ -0,0 +1,102 @@
|
|||
/* 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 <mach/gpio.h>
|
||||
#include <plat/gpio-cfg.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 *s3c6410_hsmmc_clksrcs[4] = {
|
||||
[0] = "hsmmc",
|
||||
[1] = "hsmmc",
|
||||
[2] = "mmc_bus",
|
||||
/* [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,
|
||||
struct mmc_ios *ios,
|
||||
struct mmc_card *card)
|
||||
{
|
||||
u32 ctrl2, ctrl3;
|
||||
|
||||
/* don't need to alter anything acording to card-type */
|
||||
|
||||
writel(S3C64XX_SDHCI_CONTROL4_DRIVE_9mA, r + S3C64XX_SDHCI_CONTROL4);
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
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));
|
||||
}
|
||||
|
|
@ -13,8 +13,10 @@
|
|||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/mmc/host.h>
|
||||
|
||||
#include <mach/map.h>
|
||||
#include <plat/sdhci.h>
|
||||
#include <plat/devs.h>
|
||||
#include <plat/cpu.h>
|
||||
|
||||
|
|
@ -35,13 +37,32 @@ static struct resource s3c_hsmmc_resource[] = {
|
|||
|
||||
static u64 s3c_device_hsmmc_dmamask = 0xffffffffUL;
|
||||
|
||||
struct platform_device s3c_device_hsmmc0 = {
|
||||
.name = "s3c-sdhci",
|
||||
.id = 0,
|
||||
.num_resources = ARRAY_SIZE(s3c_hsmmc_resource),
|
||||
.resource = s3c_hsmmc_resource,
|
||||
.dev = {
|
||||
.dma_mask = &s3c_device_hsmmc_dmamask,
|
||||
.coherent_dma_mask = 0xffffffffUL
|
||||
}
|
||||
struct s3c_sdhci_platdata s3c_hsmmc0_def_platdata = {
|
||||
.max_width = 4,
|
||||
.host_caps = (MMC_CAP_4_BIT_DATA |
|
||||
MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED),
|
||||
};
|
||||
|
||||
struct platform_device s3c_device_hsmmc0 = {
|
||||
.name = "s3c-sdhci",
|
||||
.id = 0,
|
||||
.num_resources = ARRAY_SIZE(s3c_hsmmc_resource),
|
||||
.resource = s3c_hsmmc_resource,
|
||||
.dev = {
|
||||
.dma_mask = &s3c_device_hsmmc_dmamask,
|
||||
.coherent_dma_mask = 0xffffffffUL,
|
||||
.platform_data = &s3c_hsmmc0_def_platdata,
|
||||
},
|
||||
};
|
||||
|
||||
void s3c_sdhci0_set_platdata(struct s3c_sdhci_platdata *pd)
|
||||
{
|
||||
struct s3c_sdhci_platdata *set = &s3c_hsmmc0_def_platdata;
|
||||
|
||||
set->max_width = pd->max_width;
|
||||
|
||||
if (pd->cfg_gpio)
|
||||
set->cfg_gpio = pd->cfg_gpio;
|
||||
if (pd->cfg_card)
|
||||
set->cfg_card = pd->cfg_card;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,87 @@
|
|||
/* linux/arch/arm/plat-s3c/include/plat/sdhci.h
|
||||
*
|
||||
* Copyright 2008 Openmoko, Inc.
|
||||
* Copyright 2008 Simtec Electronics
|
||||
* http://armlinux.simtec.co.uk/
|
||||
* Ben Dooks <ben@simtec.co.uk>
|
||||
*
|
||||
* S3C Platform - SDHCI (HSMMC) platform data definitions
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef __PLAT_S3C_SDHCI_H
|
||||
#define __PLAT_S3C_SDHCI_H __FILE__
|
||||
|
||||
struct platform_device;
|
||||
struct mmc_host;
|
||||
struct mmc_card;
|
||||
struct mmc_ios;
|
||||
|
||||
/**
|
||||
* struct s3c_sdhci_platdata() - Platform device data for Samsung SDHCI
|
||||
* @max_width: The maximum number of data bits supported.
|
||||
* @host_caps: Standard MMC host capabilities bit field.
|
||||
* @cfg_gpio: Configure the GPIO for a specific card bit-width
|
||||
* @cfg_card: Configure the interface for a specific card and speed. This
|
||||
* is necessary the controllers and/or GPIO blocks require the
|
||||
* changing of driver-strength and other controls dependant on
|
||||
* the card and speed of operation.
|
||||
*
|
||||
* Initialisation data specific to either the machine or the platform
|
||||
* for the device driver to use or call-back when configuring gpio or
|
||||
* card speed information.
|
||||
*/
|
||||
struct s3c_sdhci_platdata {
|
||||
unsigned int max_width;
|
||||
unsigned int host_caps;
|
||||
|
||||
char **clocks; /* set of clock sources */
|
||||
|
||||
void (*cfg_gpio)(struct platform_device *dev, int width);
|
||||
void (*cfg_card)(struct platform_device *dev,
|
||||
void __iomem *regbase,
|
||||
struct mmc_ios *ios,
|
||||
struct mmc_card *card);
|
||||
};
|
||||
|
||||
/**
|
||||
* s3c_sdhci0_set_platdata - Set platform data for S3C SDHCI device.
|
||||
* @pd: Platform data to register to device.
|
||||
*
|
||||
* Register the given platform data for use withe S3C SDHCI device.
|
||||
* The call will copy the platform data, so the board definitions can
|
||||
* make the structure itself __initdata.
|
||||
*/
|
||||
extern void s3c_sdhci0_set_platdata(struct s3c_sdhci_platdata *pd);
|
||||
|
||||
/* Default platform data, exported so that per-cpu initialisation can
|
||||
* set the correct one when there are more than one cpu type selected.
|
||||
*/
|
||||
|
||||
extern struct s3c_sdhci_platdata s3c_hsmmc0_def_platata;
|
||||
|
||||
/* Helper function availablity */
|
||||
|
||||
#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_sdhci0_cfg_card(struct platform_device *dev,
|
||||
void __iomem *r,
|
||||
struct mmc_ios *ios,
|
||||
struct mmc_card *card);
|
||||
|
||||
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_card = s3c6410_setup_sdhci0_cfg_card;
|
||||
}
|
||||
#else
|
||||
static inline void s3c6410_default_sdhci0(void) { }
|
||||
#endif /* CONFIG_S3C6410_SETUP_SDHCI */
|
||||
|
||||
#endif /* __PLAT_S3C_SDHCI_H */
|
||||
Reference in New Issue