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[ARM] pxa/em-x270: update MMC/SDIO implementation

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Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
This commit is contained in:
Mike Rapoport 2009-02-02 08:57:51 +02:00 committed by Eric Miao
parent 6489c611db
commit 6432f46c4f
1 changed files with 83 additions and 18 deletions
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101
arch/arm/mach-pxa/em-x270.c
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@ -43,12 +43,12 @@
#include <mach/pxa2xx_spi.h>
#include "generic.h"
#include "devices.h"
/* GPIO IRQ usage */
#define GPIO41_ETHIRQ (41)
#define GPIO13_MMC_CD (13)
#define EM_X270_ETHIRQ IRQ_GPIO(GPIO41_ETHIRQ)
#define EM_X270_MMC_CD IRQ_GPIO(GPIO13_MMC_CD)
/* NAND control GPIOs */
#define GPIO11_NAND_CS (11)
@ -56,6 +56,7 @@
/* Miscelaneous GPIOs */
#define GPIO93_CAM_RESET (93)
#define GPIO95_MMC_WP (95)
static unsigned long em_x270_pin_config[] = {
/* AC'97 */
@ -163,7 +164,8 @@ static unsigned long em_x270_pin_config[] = {
GPIO18_RDY,
/* GPIO */
GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH, /* sleep/resume button */
GPIO95_GPIO, /* MMC Write protect */
/* power controls */
GPIO20_GPIO | MFP_LPM_DRIVE_LOW, /* GPRS_PWEN */
@ -464,47 +466,86 @@ static inline void em_x270_init_ohci(void) {}
/* MCI controller setup */
#if defined(CONFIG_MMC) || defined(CONFIG_MMC_MODULE)
static struct regulator *em_x270_sdio_ldo;
static int em_x270_mci_init(struct device *dev,
irq_handler_t em_x270_detect_int,
void *data)
{
int err = request_irq(EM_X270_MMC_CD, em_x270_detect_int,
IRQF_DISABLED | IRQF_TRIGGER_FALLING,
"MMC card detect", data);
if (err) {
printk(KERN_ERR "%s: can't request MMC card detect IRQ: %d\n",
__func__, err);
return err;
int err;
em_x270_sdio_ldo = regulator_get(dev, "vcc sdio");
if (IS_ERR(em_x270_sdio_ldo)) {
dev_err(dev, "can't request SDIO power supply: %ld\n",
PTR_ERR(em_x270_sdio_ldo));
return PTR_ERR(em_x270_sdio_ldo);
}
err = request_irq(gpio_to_irq(GPIO13_MMC_CD), em_x270_detect_int,
IRQF_DISABLED | IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING,
"MMC card detect", data);
if (err) {
dev_err(dev, "can't request MMC card detect IRQ: %d\n", err);
goto err_irq;
}
err = gpio_request(GPIO95_MMC_WP, "MMC WP");
if (err) {
dev_err(dev, "can't request MMC write protect: %d\n", err);
goto err_gpio_wp;
}
gpio_direction_input(GPIO95_MMC_WP);
return 0;
err_gpio_wp:
free_irq(gpio_to_irq(GPIO13_MMC_CD), data);
err_irq:
regulator_put(em_x270_sdio_ldo);
return err;
}
static void em_x270_mci_setpower(struct device *dev, unsigned int vdd)
{
/*
FIXME: current hardware implementation does not allow to
enable/disable MMC power. This will be fixed in next HW releases,
and we'll need to add implmentation here.
*/
return;
struct pxamci_platform_data* p_d = dev->platform_data;
if ((1 << vdd) & p_d->ocr_mask) {
int vdd_uV = (2000 + (vdd - __ffs(MMC_VDD_20_21)) * 100) * 1000;
regulator_set_voltage(em_x270_sdio_ldo, vdd_uV, vdd_uV);
regulator_enable(em_x270_sdio_ldo);
} else {
regulator_disable(em_x270_sdio_ldo);
}
}
static void em_x270_mci_exit(struct device *dev, void *data)
{
int irq = gpio_to_irq(GPIO13_MMC_CD);
free_irq(irq, data);
free_irq(gpio_to_irq(GPIO13_MMC_CD), data);
}
static int em_x270_mci_get_ro(struct device *dev)
{
return gpio_get_value(GPIO95_MMC_WP);
}
static struct pxamci_platform_data em_x270_mci_platform_data = {
.ocr_mask = MMC_VDD_28_29|MMC_VDD_29_30|MMC_VDD_30_31,
.ocr_mask = MMC_VDD_20_21|MMC_VDD_21_22|MMC_VDD_22_23|
MMC_VDD_24_25|MMC_VDD_25_26|MMC_VDD_26_27|
MMC_VDD_27_28|MMC_VDD_28_29|MMC_VDD_29_30|
MMC_VDD_30_31|MMC_VDD_31_32,
.init = em_x270_mci_init,
.setpower = em_x270_mci_setpower,
.get_ro = em_x270_mci_get_ro,
.exit = em_x270_mci_exit,
};
static void __init em_x270_init_mmc(void)
{
em_x270_mci_platform_data.detect_delay = msecs_to_jiffies(250);
pxa_set_mci_info(&em_x270_mci_platform_data);
}
#else
@ -757,6 +798,13 @@ static struct regulator_consumer_supply ldo5_consumers[] = {
},
};
static struct regulator_consumer_supply ldo10_consumers[] = {
{
.dev = &pxa_device_mci.dev,
.supply = "vcc sdio",
},
};
static struct regulator_consumer_supply ldo12_consumers[] = {
{
.dev = NULL,
@ -795,6 +843,19 @@ static struct regulator_init_data ldo5_data = {
.consumer_supplies = ldo5_consumers,
};
static struct regulator_init_data ldo10_data = {
.constraints = {
.min_uV = 2000000,
.max_uV = 3200000,
.state_mem = {
.enabled = 0,
},
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_STATUS,
},
.num_consumer_supplies = ARRAY_SIZE(ldo10_consumers),
.consumer_supplies = ldo10_consumers,
};
static struct regulator_init_data ldo12_data = {
.constraints = {
.min_uV = 3000000,
@ -833,6 +894,10 @@ struct da903x_subdev_info em_x270_da9030_subdevs[] = {
.name = "da903x-regulator",
.id = DA9030_ID_LDO5,
.platform_data = &ldo5_data,
}, {
.name = "da903x-regulator",
.id = DA9030_ID_LDO10,
.platform_data = &ldo10_data,
}, {
.name = "da903x-regulator",
.id = DA9030_ID_LDO12,