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authorMike Rapoport <mike@compulab.co.il>2009-02-02 08:57:51 +0200
committerEric Miao <eric.miao@marvell.com>2009-02-02 17:40:16 +0800
commit6432f46c4ffd0a85cab5313bc989a6db32bc0eb4 (patch)
treee2c72256bc068043d544c764443d1406db4e336a /arch/arm/mach-pxa/em-x270.c
parent6489c611db095356645ca1a2689e93c63caeb310 (diff)
downloadop-kernel-dev-6432f46c4ffd0a85cab5313bc989a6db32bc0eb4.zip
op-kernel-dev-6432f46c4ffd0a85cab5313bc989a6db32bc0eb4.tar.gz
[ARM] pxa/em-x270: update MMC/SDIO implementation
Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Eric Miao <eric.miao@marvell.com>
Diffstat (limited to 'arch/arm/mach-pxa/em-x270.c')
-rw-r--r--arch/arm/mach-pxa/em-x270.c97
1 files changed, 81 insertions, 16 deletions
diff --git a/arch/arm/mach-pxa/em-x270.c b/arch/arm/mach-pxa/em-x270.c
index 1aaae97..05f9e9e 100644
--- a/arch/arm/mach-pxa/em-x270.c
+++ b/arch/arm/mach-pxa/em-x270.c
@@ -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,
+ 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) {
- printk(KERN_ERR "%s: can't request MMC card detect IRQ: %d\n",
- __func__, err);
- return 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,
@@ -835,6 +896,10 @@ struct da903x_subdev_info em_x270_da9030_subdevs[] = {
.platform_data = &ldo5_data,
}, {
.name = "da903x-regulator",
+ .id = DA9030_ID_LDO10,
+ .platform_data = &ldo10_data,
+ }, {
+ .name = "da903x-regulator",
.id = DA9030_ID_LDO12,
.platform_data = &ldo12_data,
}, {
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