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