arch/arm/mach-msm/board-mahimahi-mmc.c - kernel/msm - Git at Google

 /* linux/arch/arm/mach-msm/board-mahimahi-mmc.c
  *
  * Copyright (C) 2009 Google, Inc.
  * Copyright (C) 2009 HTC Corporation
  *
  * This software is licensed under the terms of the GNU General Public
  * License version 2, as published by the Free Software Foundation, and
  * may be copied, distributed, and modified under those terms.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  */

 #include <linux/delay.h>
 #include <linux/debugfs.h>
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/mmc/host.h>
 #include <linux/mmc/sdio_ids.h>
 #include <linux/platform_device.h>

 #include <asm/gpio.h>
 #include <asm/io.h>
 #include <asm/mach-types.h>
 #include <asm/mach/mmc.h>

 #include <mach/vreg.h>
 #include <mach/proc_comm.h>

 #include "board-mahimahi.h"
 #include "devices.h"

 #undef MAHIMAHI_DEBUG_MMC

 static bool opt_disable_sdcard;
 static int __init mahimahi_disablesdcard_setup(char *str)
 {
 	opt_disable_sdcard = (bool)simple_strtol(str, NULL, 0);
 	return 1;
 }

 __setup("board_mahimahi.disable_sdcard=", mahimahi_disablesdcard_setup);

 static void config_gpio_table(uint32_t *table, int len)
 {
 	int n;
 	unsigned id;
 	for(n = 0; n < len; n++) {
 		id = table[n];
 		msm_proc_comm(PCOM_RPC_GPIO_TLMM_CONFIG_EX, &id, 0);
 	}
 }

 static uint32_t sdcard_on_gpio_table[] = {
 	PCOM_GPIO_CFG(62, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_8MA), /* CLK */
 	PCOM_GPIO_CFG(63, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* CMD */
 	PCOM_GPIO_CFG(64, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT3 */
 	PCOM_GPIO_CFG(65, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT2 */
 	PCOM_GPIO_CFG(66, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT1 */
 	PCOM_GPIO_CFG(67, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT0 */
 };

 static uint32_t sdcard_off_gpio_table[] = {
 	PCOM_GPIO_CFG(62, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* CLK */
 	PCOM_GPIO_CFG(63, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* CMD */
 	PCOM_GPIO_CFG(64, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT3 */
 	PCOM_GPIO_CFG(65, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT2 */
 	PCOM_GPIO_CFG(66, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT1 */
 	PCOM_GPIO_CFG(67, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT0 */
 };

 static struct vreg	*sdslot_vreg;
 static uint32_t		sdslot_vdd = 0xffffffff;
 static uint32_t		sdslot_vreg_enabled;

 static struct {
 	int mask;
 	int level;
 } mmc_vdd_table[] = {
 	{ MMC_VDD_165_195,	1800 },
 	{ MMC_VDD_20_21,	2050 },
 	{ MMC_VDD_21_22,	2150 },
 	{ MMC_VDD_22_23,	2250 },
 	{ MMC_VDD_23_24,	2350 },
 	{ MMC_VDD_24_25,	2450 },
 	{ MMC_VDD_25_26,	2550 },
 	{ MMC_VDD_26_27,	2650 },
 	{ MMC_VDD_27_28,	2750 },
 	{ MMC_VDD_28_29,	2850 },
 	{ MMC_VDD_29_30,	2950 },
 };

 static uint32_t mahimahi_sdslot_switchvdd(struct device *dev, unsigned int vdd)
 {
 	int i;
 	int ret;

 	if (vdd == sdslot_vdd)
 		return 0;

 	sdslot_vdd = vdd;

 	if (vdd == 0) {
 		config_gpio_table(sdcard_off_gpio_table,
 				  ARRAY_SIZE(sdcard_off_gpio_table));
 		vreg_disable(sdslot_vreg);
 		sdslot_vreg_enabled = 0;
 		return 0;
 	}

 	if (!sdslot_vreg_enabled) {
 		ret = vreg_enable(sdslot_vreg);
 		if (ret)
 			pr_err("%s: Error enabling vreg (%d)\n", __func__, ret);
 		config_gpio_table(sdcard_on_gpio_table,
 				  ARRAY_SIZE(sdcard_on_gpio_table));
 		sdslot_vreg_enabled = 1;
 	}

 	for (i = 0; i < ARRAY_SIZE(mmc_vdd_table); i++) {
 		if (mmc_vdd_table[i].mask != (1 << vdd))
 			continue;
 		ret = vreg_set_level(sdslot_vreg, mmc_vdd_table[i].level);
 		if (ret)
 			pr_err("%s: Error setting level (%d)\n", __func__, ret);
 		return 0;
 	}

 	pr_err("%s: Invalid VDD (%d) specified\n", __func__, vdd);
 	return 0;
 }

 static uint32_t mahimahi_cdma_sdslot_switchvdd(struct device *dev, unsigned int vdd)
 {
 	if (!vdd == !sdslot_vdd)
 		return 0;

 	/* In CDMA version, the vdd of sdslot is not configurable, and it is
 	 * fixed in 2.85V by hardware design.
 	 */

 	sdslot_vdd = vdd ? MMC_VDD_28_29 : 0;

 	if (vdd) {
 		gpio_set_value(MAHIMAHI_CDMA_SD_2V85_EN, 1);
 		config_gpio_table(sdcard_on_gpio_table,
 				  ARRAY_SIZE(sdcard_on_gpio_table));
 	} else {
 		config_gpio_table(sdcard_off_gpio_table,
 				  ARRAY_SIZE(sdcard_off_gpio_table));
 		gpio_set_value(MAHIMAHI_CDMA_SD_2V85_EN, 0);
 	}

 	sdslot_vreg_enabled = !!vdd;

 	return 0;
 }

 static unsigned int mahimahi_sdslot_status_rev0(struct device *dev)
 {
 	return !gpio_get_value(MAHIMAHI_GPIO_SDMC_CD_REV0_N);
 }

 #define MAHIMAHI_MMC_VDD	(MMC_VDD_165_195 | MMC_VDD_20_21 | \
 				 MMC_VDD_21_22  | MMC_VDD_22_23 | \
 				 MMC_VDD_23_24 | MMC_VDD_24_25 | \
 				 MMC_VDD_25_26 | MMC_VDD_26_27 | \
 				 MMC_VDD_27_28 | MMC_VDD_28_29 | \
 				 MMC_VDD_29_30)

 int mahimahi_microp_sdslot_status_register(void (*cb)(int, void *), void *);
 unsigned int mahimahi_microp_sdslot_status(struct device *);

 static struct mmc_platform_data mahimahi_sdslot_data = {
 	.ocr_mask		= MAHIMAHI_MMC_VDD,
 	.status			= mahimahi_microp_sdslot_status,
 	.register_status_notify	= mahimahi_microp_sdslot_status_register,
 	.translate_vdd		= mahimahi_sdslot_switchvdd,
 };

 static uint32_t wifi_on_gpio_table[] = {
 	PCOM_GPIO_CFG(51, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT3 */
 	PCOM_GPIO_CFG(52, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT2 */
 	PCOM_GPIO_CFG(53, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT1 */
 	PCOM_GPIO_CFG(54, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT0 */
 	PCOM_GPIO_CFG(55, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* CMD */
 	PCOM_GPIO_CFG(56, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_8MA), /* CLK */
 	PCOM_GPIO_CFG(152, 0, GPIO_INPUT, GPIO_NO_PULL, GPIO_4MA),  /* WLAN IRQ */
 };

 static uint32_t wifi_off_gpio_table[] = {
 	PCOM_GPIO_CFG(51, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT3 */
 	PCOM_GPIO_CFG(52, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT2 */
 	PCOM_GPIO_CFG(53, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT1 */
 	PCOM_GPIO_CFG(54, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT0 */
 	PCOM_GPIO_CFG(55, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* CMD */
 	PCOM_GPIO_CFG(56, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* CLK */
 	PCOM_GPIO_CFG(152, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA),  /* WLAN IRQ */
 };

 /* BCM4329 returns wrong sdio_vsn(1) when we read cccr,
  * we use predefined value (sdio_vsn=2) here to initial sdio driver well
  */
 static struct embedded_sdio_data mahimahi_wifi_emb_data = {
 	.cccr	= {
 		.sdio_vsn	= 2,
 		.multi_block	= 1,
 		.low_speed	= 0,
 		.wide_bus	= 0,
 		.high_power	= 1,
 		.high_speed	= 1,
 	},
 };

 static int mahimahi_wifi_cd = 0; /* WIFI virtual 'card detect' status */
 static void (*wifi_status_cb)(int card_present, void *dev_id);
 static void *wifi_status_cb_devid;

 static int mahimahi_wifi_status_register(
 			void (*callback)(int card_present, void *dev_id),
 			void *dev_id)
 {
 	if (wifi_status_cb)
 		return -EAGAIN;
 	wifi_status_cb = callback;
 	wifi_status_cb_devid = dev_id;
 	return 0;
 }

 static unsigned int mahimahi_wifi_status(struct device *dev)
 {
 	return mahimahi_wifi_cd;
 }

 static struct mmc_platform_data mahimahi_wifi_data = {
 	.ocr_mask		= MMC_VDD_28_29,
 	.built_in		= 1,
 	.status			= mahimahi_wifi_status,
 	.register_status_notify	= mahimahi_wifi_status_register,
 	.embedded_sdio		= &mahimahi_wifi_emb_data,
 };

 int mahimahi_wifi_set_carddetect(int val)
 {
 	pr_info("%s: %d\n", __func__, val);
 	mahimahi_wifi_cd = val;
 	if (wifi_status_cb) {
 		wifi_status_cb(val, wifi_status_cb_devid);
 	} else
 		pr_warning("%s: Nobody to notify\n", __func__);
 	return 0;
 }

 static int mahimahi_wifi_power_state;

 int mahimahi_wifi_power(int on)
 {
 	printk("%s: %d\n", __func__, on);

 	if (on) {
 		config_gpio_table(wifi_on_gpio_table,
 				  ARRAY_SIZE(wifi_on_gpio_table));
 		mdelay(50);
 	} else {
 		config_gpio_table(wifi_off_gpio_table,
 				  ARRAY_SIZE(wifi_off_gpio_table));
 	}

 	mdelay(100);
 	gpio_set_value(MAHIMAHI_GPIO_WIFI_SHUTDOWN_N, on); /* WIFI_SHUTDOWN */
 	mdelay(200);

 	mahimahi_wifi_power_state = on;
 	return 0;
 }

 static int mahimahi_wifi_reset_state;

 int mahimahi_wifi_reset(int on)
 {
 	printk("%s: do nothing\n", __func__);
 	mahimahi_wifi_reset_state = on;
 	return 0;
 }

 int msm_add_sdcc(unsigned int controller, struct mmc_platform_data *plat,
 		 unsigned int stat_irq, unsigned long stat_irq_flags);

 int __init mahimahi_init_mmc(unsigned int sys_rev, unsigned debug_uart)
 {
 	uint32_t id;

 	printk("%s()+\n", __func__);

 	/* initial WIFI_SHUTDOWN# */
 	id = PCOM_GPIO_CFG(MAHIMAHI_GPIO_WIFI_SHUTDOWN_N, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA),
 	msm_proc_comm(PCOM_RPC_GPIO_TLMM_CONFIG_EX, &id, 0);

 	msm_add_sdcc(1, &mahimahi_wifi_data, 0, 0);

 	if (debug_uart) {
 		pr_info("%s: sdcard disabled due to debug uart\n", __func__);
 		goto done;
 	}
 	if (opt_disable_sdcard) {
 		pr_info("%s: sdcard disabled on cmdline\n", __func__);
 		goto done;
 	}

 	sdslot_vreg_enabled = 0;

 	if (is_cdma_version(sys_rev)) {
 		/* In the CDMA version, sdslot is supplied by a gpio. */
 		int rc = gpio_request(MAHIMAHI_CDMA_SD_2V85_EN, "sdslot_en");
 		if (rc < 0) {
 			pr_err("%s: gpio_request(%d) failed: %d\n", __func__,
 				MAHIMAHI_CDMA_SD_2V85_EN, rc);
 			return rc;
 		}
 		mahimahi_sdslot_data.translate_vdd = mahimahi_cdma_sdslot_switchvdd;
 	} else {
 		/* in UMTS version, sdslot is supplied by pmic */
 		sdslot_vreg = vreg_get(0, "gp6");
 		if (IS_ERR(sdslot_vreg))
 			return PTR_ERR(sdslot_vreg);
 	}

 	if (system_rev > 0)
 		msm_add_sdcc(2, &mahimahi_sdslot_data, 0, 0);
 	else {
 		mahimahi_sdslot_data.status = mahimahi_sdslot_status_rev0;
 		mahimahi_sdslot_data.register_status_notify = NULL;
 		set_irq_wake(MSM_GPIO_TO_INT(MAHIMAHI_GPIO_SDMC_CD_REV0_N), 1);
 		msm_add_sdcc(2, &mahimahi_sdslot_data,
 			     MSM_GPIO_TO_INT(MAHIMAHI_GPIO_SDMC_CD_REV0_N),
 			     IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE);
 	}

 done:
 	printk("%s()-\n", __func__);
 	return 0;
 }

 #if defined(MAHIMAHI_DEBUG_MMC) && defined(CONFIG_DEBUG_FS)

 static int mahimahimmc_dbg_wifi_reset_set(void *data, u64 val)
 {
 	mahimahi_wifi_reset((int) val);
 	return 0;
 }

 static int mahimahimmc_dbg_wifi_reset_get(void *data, u64 *val)
 {
 	*val = mahimahi_wifi_reset_state;
 	return 0;
 }

 static int mahimahimmc_dbg_wifi_cd_set(void *data, u64 val)
 {
 	mahimahi_wifi_set_carddetect((int) val);
 	return 0;
 }

 static int mahimahimmc_dbg_wifi_cd_get(void *data, u64 *val)
 {
 	*val = mahimahi_wifi_cd;
 	return 0;
 }

 static int mahimahimmc_dbg_wifi_pwr_set(void *data, u64 val)
 {
 	mahimahi_wifi_power((int) val);
 	return 0;
 }

 static int mahimahimmc_dbg_wifi_pwr_get(void *data, u64 *val)
 {
 	*val = mahimahi_wifi_power_state;
 	return 0;
 }

 static int mahimahimmc_dbg_sd_pwr_set(void *data, u64 val)
 {
 	mahimahi_sdslot_switchvdd(NULL, (unsigned int) val);
 	return 0;
 }

 static int mahimahimmc_dbg_sd_pwr_get(void *data, u64 *val)
 {
 	*val = sdslot_vdd;
 	return 0;
 }

 static int mahimahimmc_dbg_sd_cd_set(void *data, u64 val)
 {
 	return -ENOSYS;
 }

 static int mahimahimmc_dbg_sd_cd_get(void *data, u64 *val)
 {
 	*val = mahimahi_sdslot_data.status(NULL);
 	return 0;
 }

 DEFINE_SIMPLE_ATTRIBUTE(mahimahimmc_dbg_wifi_reset_fops,
 			mahimahimmc_dbg_wifi_reset_get,
 			mahimahimmc_dbg_wifi_reset_set, "%llu\n");

 DEFINE_SIMPLE_ATTRIBUTE(mahimahimmc_dbg_wifi_cd_fops,
 			mahimahimmc_dbg_wifi_cd_get,
 			mahimahimmc_dbg_wifi_cd_set, "%llu\n");

 DEFINE_SIMPLE_ATTRIBUTE(mahimahimmc_dbg_wifi_pwr_fops,
 			mahimahimmc_dbg_wifi_pwr_get,
 			mahimahimmc_dbg_wifi_pwr_set, "%llu\n");

 DEFINE_SIMPLE_ATTRIBUTE(mahimahimmc_dbg_sd_pwr_fops,
 			mahimahimmc_dbg_sd_pwr_get,
 			mahimahimmc_dbg_sd_pwr_set, "%llu\n");

 DEFINE_SIMPLE_ATTRIBUTE(mahimahimmc_dbg_sd_cd_fops,
 			mahimahimmc_dbg_sd_cd_get,
 			mahimahimmc_dbg_sd_cd_set, "%llu\n");

 static int __init mahimahimmc_dbg_init(void)
 {
 	struct dentry *dent;

 	if (!machine_is_mahimahi())
 		return 0;

 	dent = debugfs_create_dir("mahimahi_mmc_dbg", 0);
 	if (IS_ERR(dent))
 		return PTR_ERR(dent);

 	debugfs_create_file("wifi_reset", 0644, dent, NULL,
 			    &mahimahimmc_dbg_wifi_reset_fops);
 	debugfs_create_file("wifi_cd", 0644, dent, NULL,
 			    &mahimahimmc_dbg_wifi_cd_fops);
 	debugfs_create_file("wifi_pwr", 0644, dent, NULL,
 			    &mahimahimmc_dbg_wifi_pwr_fops);
 	debugfs_create_file("sd_pwr", 0644, dent, NULL,
 			    &mahimahimmc_dbg_sd_pwr_fops);
 	debugfs_create_file("sd_cd", 0644, dent, NULL,
 			    &mahimahimmc_dbg_sd_cd_fops);
 	return 0;
 }

 device_initcall(mahimahimmc_dbg_init);
 #endif
	/* linux/arch/arm/mach-msm/board-mahimahi-mmc.c
	*
	* Copyright (C) 2009 Google, Inc.
	* Copyright (C) 2009 HTC Corporation
	*
	* This software is licensed under the terms of the GNU General Public
	* License version 2, as published by the Free Software Foundation, and
	* may be copied, distributed, and modified under those terms.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	*/

	#include <linux/delay.h>
	#include <linux/debugfs.h>
	#include <linux/err.h>
	#include <linux/init.h>
	#include <linux/kernel.h>
	#include <linux/mmc/host.h>
	#include <linux/mmc/sdio_ids.h>
	#include <linux/platform_device.h>

	#include <asm/gpio.h>
	#include <asm/io.h>
	#include <asm/mach-types.h>
	#include <asm/mach/mmc.h>

	#include <mach/vreg.h>
	#include <mach/proc_comm.h>

	#include "board-mahimahi.h"
	#include "devices.h"

	#undef MAHIMAHI_DEBUG_MMC

	static bool opt_disable_sdcard;
	static int __init mahimahi_disablesdcard_setup(char *str)
	{
	opt_disable_sdcard = (bool)simple_strtol(str, NULL, 0);
	return 1;
	}

	__setup("board_mahimahi.disable_sdcard=", mahimahi_disablesdcard_setup);

	static void config_gpio_table(uint32_t *table, int len)
	{
	int n;
	unsigned id;
	for(n = 0; n < len; n++) {
	id = table[n];
	msm_proc_comm(PCOM_RPC_GPIO_TLMM_CONFIG_EX, &id, 0);
	}
	}

	static uint32_t sdcard_on_gpio_table[] = {
	PCOM_GPIO_CFG(62, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_8MA), /* CLK */
	PCOM_GPIO_CFG(63, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* CMD */
	PCOM_GPIO_CFG(64, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT3 */
	PCOM_GPIO_CFG(65, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT2 */
	PCOM_GPIO_CFG(66, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT1 */
	PCOM_GPIO_CFG(67, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT0 */
	};

	static uint32_t sdcard_off_gpio_table[] = {
	PCOM_GPIO_CFG(62, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* CLK */
	PCOM_GPIO_CFG(63, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* CMD */
	PCOM_GPIO_CFG(64, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT3 */
	PCOM_GPIO_CFG(65, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT2 */
	PCOM_GPIO_CFG(66, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT1 */
	PCOM_GPIO_CFG(67, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT0 */
	};

	static struct vreg *sdslot_vreg;
	static uint32_t sdslot_vdd = 0xffffffff;
	static uint32_t sdslot_vreg_enabled;

	static struct {
	int mask;
	int level;
	} mmc_vdd_table[] = {
	{ MMC_VDD_165_195, 1800 },
	{ MMC_VDD_20_21, 2050 },
	{ MMC_VDD_21_22, 2150 },
	{ MMC_VDD_22_23, 2250 },
	{ MMC_VDD_23_24, 2350 },
	{ MMC_VDD_24_25, 2450 },
	{ MMC_VDD_25_26, 2550 },
	{ MMC_VDD_26_27, 2650 },
	{ MMC_VDD_27_28, 2750 },
	{ MMC_VDD_28_29, 2850 },
	{ MMC_VDD_29_30, 2950 },
	};

	static uint32_t mahimahi_sdslot_switchvdd(struct device *dev, unsigned int vdd)
	{
	int i;
	int ret;

	if (vdd == sdslot_vdd)
	return 0;

	sdslot_vdd = vdd;

	if (vdd == 0) {
	config_gpio_table(sdcard_off_gpio_table,
	ARRAY_SIZE(sdcard_off_gpio_table));
	vreg_disable(sdslot_vreg);
	sdslot_vreg_enabled = 0;
	return 0;
	}

	if (!sdslot_vreg_enabled) {
	ret = vreg_enable(sdslot_vreg);
	if (ret)
	pr_err("%s: Error enabling vreg (%d)\n", __func__, ret);
	config_gpio_table(sdcard_on_gpio_table,
	ARRAY_SIZE(sdcard_on_gpio_table));
	sdslot_vreg_enabled = 1;
	}

	for (i = 0; i < ARRAY_SIZE(mmc_vdd_table); i++) {
	if (mmc_vdd_table[i].mask != (1 << vdd))
	continue;
	ret = vreg_set_level(sdslot_vreg, mmc_vdd_table[i].level);
	if (ret)
	pr_err("%s: Error setting level (%d)\n", __func__, ret);
	return 0;
	}

	pr_err("%s: Invalid VDD (%d) specified\n", __func__, vdd);
	return 0;
	}

	static uint32_t mahimahi_cdma_sdslot_switchvdd(struct device *dev, unsigned int vdd)
	{
	if (!vdd == !sdslot_vdd)
	return 0;

	/* In CDMA version, the vdd of sdslot is not configurable, and it is
	* fixed in 2.85V by hardware design.
	*/

	sdslot_vdd = vdd ? MMC_VDD_28_29 : 0;

	if (vdd) {
	gpio_set_value(MAHIMAHI_CDMA_SD_2V85_EN, 1);
	config_gpio_table(sdcard_on_gpio_table,
	ARRAY_SIZE(sdcard_on_gpio_table));
	} else {
	config_gpio_table(sdcard_off_gpio_table,
	ARRAY_SIZE(sdcard_off_gpio_table));
	gpio_set_value(MAHIMAHI_CDMA_SD_2V85_EN, 0);
	}

	sdslot_vreg_enabled = !!vdd;

	return 0;
	}

	static unsigned int mahimahi_sdslot_status_rev0(struct device *dev)
	{
	return !gpio_get_value(MAHIMAHI_GPIO_SDMC_CD_REV0_N);
	}

	#define MAHIMAHI_MMC_VDD (MMC_VDD_165_195 \| MMC_VDD_20_21 \| \
	MMC_VDD_21_22 \| MMC_VDD_22_23 \| \
	MMC_VDD_23_24 \| MMC_VDD_24_25 \| \
	MMC_VDD_25_26 \| MMC_VDD_26_27 \| \
	MMC_VDD_27_28 \| MMC_VDD_28_29 \| \
	MMC_VDD_29_30)

	int mahimahi_microp_sdslot_status_register(void (cb)(int, void ), void *);
	unsigned int mahimahi_microp_sdslot_status(struct device *);

	static struct mmc_platform_data mahimahi_sdslot_data = {
	.ocr_mask = MAHIMAHI_MMC_VDD,
	.status = mahimahi_microp_sdslot_status,
	.register_status_notify = mahimahi_microp_sdslot_status_register,
	.translate_vdd = mahimahi_sdslot_switchvdd,
	};

	static uint32_t wifi_on_gpio_table[] = {
	PCOM_GPIO_CFG(51, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT3 */
	PCOM_GPIO_CFG(52, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT2 */
	PCOM_GPIO_CFG(53, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT1 */
	PCOM_GPIO_CFG(54, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_4MA), /* DAT0 */
	PCOM_GPIO_CFG(55, 1, GPIO_OUTPUT, GPIO_PULL_UP, GPIO_8MA), /* CMD */
	PCOM_GPIO_CFG(56, 1, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_8MA), /* CLK */
	PCOM_GPIO_CFG(152, 0, GPIO_INPUT, GPIO_NO_PULL, GPIO_4MA), /* WLAN IRQ */
	};

	static uint32_t wifi_off_gpio_table[] = {
	PCOM_GPIO_CFG(51, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT3 */
	PCOM_GPIO_CFG(52, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT2 */
	PCOM_GPIO_CFG(53, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT1 */
	PCOM_GPIO_CFG(54, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* DAT0 */
	PCOM_GPIO_CFG(55, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* CMD */
	PCOM_GPIO_CFG(56, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* CLK */
	PCOM_GPIO_CFG(152, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_4MA), /* WLAN IRQ */
	};

	/* BCM4329 returns wrong sdio_vsn(1) when we read cccr,
	* we use predefined value (sdio_vsn=2) here to initial sdio driver well
	*/
	static struct embedded_sdio_data mahimahi_wifi_emb_data = {
	.cccr = {
	.sdio_vsn = 2,
	.multi_block = 1,
	.low_speed = 0,
	.wide_bus = 0,
	.high_power = 1,
	.high_speed = 1,
	},
	};

	static int mahimahi_wifi_cd = 0; /* WIFI virtual 'card detect' status */
	static void (wifi_status_cb)(int card_present, void dev_id);
	static void *wifi_status_cb_devid;

	static int mahimahi_wifi_status_register(
	void (callback)(int card_present, void dev_id),
	void *dev_id)
	{
	if (wifi_status_cb)
	return -EAGAIN;
	wifi_status_cb = callback;
	wifi_status_cb_devid = dev_id;
	return 0;
	}

	static unsigned int mahimahi_wifi_status(struct device *dev)
	{
	return mahimahi_wifi_cd;
	}

	static struct mmc_platform_data mahimahi_wifi_data = {
	.ocr_mask = MMC_VDD_28_29,
	.built_in = 1,
	.status = mahimahi_wifi_status,
	.register_status_notify = mahimahi_wifi_status_register,
	.embedded_sdio = &mahimahi_wifi_emb_data,
	};

	int mahimahi_wifi_set_carddetect(int val)
	{
	pr_info("%s: %d\n", __func__, val);
	mahimahi_wifi_cd = val;
	if (wifi_status_cb) {
	wifi_status_cb(val, wifi_status_cb_devid);
	} else
	pr_warning("%s: Nobody to notify\n", __func__);
	return 0;
	}

	static int mahimahi_wifi_power_state;

	int mahimahi_wifi_power(int on)
	{
	printk("%s: %d\n", __func__, on);

	if (on) {
	config_gpio_table(wifi_on_gpio_table,
	ARRAY_SIZE(wifi_on_gpio_table));
	mdelay(50);
	} else {
	config_gpio_table(wifi_off_gpio_table,
	ARRAY_SIZE(wifi_off_gpio_table));
	}

	mdelay(100);
	gpio_set_value(MAHIMAHI_GPIO_WIFI_SHUTDOWN_N, on); /* WIFI_SHUTDOWN */
	mdelay(200);

	mahimahi_wifi_power_state = on;
	return 0;
	}

	static int mahimahi_wifi_reset_state;

	int mahimahi_wifi_reset(int on)
	{
	printk("%s: do nothing\n", __func__);
	mahimahi_wifi_reset_state = on;
	return 0;
	}

	int msm_add_sdcc(unsigned int controller, struct mmc_platform_data *plat,
	unsigned int stat_irq, unsigned long stat_irq_flags);

	int __init mahimahi_init_mmc(unsigned int sys_rev, unsigned debug_uart)
	{
	uint32_t id;

	printk("%s()+\n", __func__);

	/* initial WIFI_SHUTDOWN# */
	id = PCOM_GPIO_CFG(MAHIMAHI_GPIO_WIFI_SHUTDOWN_N, 0, GPIO_OUTPUT, GPIO_NO_PULL, GPIO_2MA),
	msm_proc_comm(PCOM_RPC_GPIO_TLMM_CONFIG_EX, &id, 0);

	msm_add_sdcc(1, &mahimahi_wifi_data, 0, 0);

	if (debug_uart) {
	pr_info("%s: sdcard disabled due to debug uart\n", __func__);
	goto done;
	}
	if (opt_disable_sdcard) {
	pr_info("%s: sdcard disabled on cmdline\n", __func__);
	goto done;
	}

	sdslot_vreg_enabled = 0;

	if (is_cdma_version(sys_rev)) {
	/* In the CDMA version, sdslot is supplied by a gpio. */
	int rc = gpio_request(MAHIMAHI_CDMA_SD_2V85_EN, "sdslot_en");
	if (rc < 0) {
	pr_err("%s: gpio_request(%d) failed: %d\n", __func__,
	MAHIMAHI_CDMA_SD_2V85_EN, rc);
	return rc;
	}
	mahimahi_sdslot_data.translate_vdd = mahimahi_cdma_sdslot_switchvdd;
	} else {
	/* in UMTS version, sdslot is supplied by pmic */
	sdslot_vreg = vreg_get(0, "gp6");
	if (IS_ERR(sdslot_vreg))
	return PTR_ERR(sdslot_vreg);
	}

	if (system_rev > 0)
	msm_add_sdcc(2, &mahimahi_sdslot_data, 0, 0);
	else {
	mahimahi_sdslot_data.status = mahimahi_sdslot_status_rev0;
	mahimahi_sdslot_data.register_status_notify = NULL;
	set_irq_wake(MSM_GPIO_TO_INT(MAHIMAHI_GPIO_SDMC_CD_REV0_N), 1);
	msm_add_sdcc(2, &mahimahi_sdslot_data,
	MSM_GPIO_TO_INT(MAHIMAHI_GPIO_SDMC_CD_REV0_N),
	IORESOURCE_IRQ_LOWEDGE \| IORESOURCE_IRQ_HIGHEDGE);
	}

	done:
	printk("%s()-\n", __func__);
	return 0;
	}

	#if defined(MAHIMAHI_DEBUG_MMC) && defined(CONFIG_DEBUG_FS)

	static int mahimahimmc_dbg_wifi_reset_set(void *data, u64 val)
	{
	mahimahi_wifi_reset((int) val);
	return 0;
	}

	static int mahimahimmc_dbg_wifi_reset_get(void data, u64 val)
	{
	*val = mahimahi_wifi_reset_state;
	return 0;
	}

	static int mahimahimmc_dbg_wifi_cd_set(void *data, u64 val)
	{
	mahimahi_wifi_set_carddetect((int) val);
	return 0;
	}

	static int mahimahimmc_dbg_wifi_cd_get(void data, u64 val)
	{
	*val = mahimahi_wifi_cd;
	return 0;
	}

	static int mahimahimmc_dbg_wifi_pwr_set(void *data, u64 val)
	{
	mahimahi_wifi_power((int) val);
	return 0;
	}

	static int mahimahimmc_dbg_wifi_pwr_get(void data, u64 val)
	{
	*val = mahimahi_wifi_power_state;
	return 0;
	}

	static int mahimahimmc_dbg_sd_pwr_set(void *data, u64 val)
	{
	mahimahi_sdslot_switchvdd(NULL, (unsigned int) val);
	return 0;
	}

	static int mahimahimmc_dbg_sd_pwr_get(void data, u64 val)
	{
	*val = sdslot_vdd;
	return 0;
	}

	static int mahimahimmc_dbg_sd_cd_set(void *data, u64 val)
	{
	return -ENOSYS;
	}

	static int mahimahimmc_dbg_sd_cd_get(void data, u64 val)
	{
	*val = mahimahi_sdslot_data.status(NULL);
	return 0;
	}

	DEFINE_SIMPLE_ATTRIBUTE(mahimahimmc_dbg_wifi_reset_fops,
	mahimahimmc_dbg_wifi_reset_get,
	mahimahimmc_dbg_wifi_reset_set, "%llu\n");

	DEFINE_SIMPLE_ATTRIBUTE(mahimahimmc_dbg_wifi_cd_fops,
	mahimahimmc_dbg_wifi_cd_get,
	mahimahimmc_dbg_wifi_cd_set, "%llu\n");

	DEFINE_SIMPLE_ATTRIBUTE(mahimahimmc_dbg_wifi_pwr_fops,
	mahimahimmc_dbg_wifi_pwr_get,
	mahimahimmc_dbg_wifi_pwr_set, "%llu\n");

	DEFINE_SIMPLE_ATTRIBUTE(mahimahimmc_dbg_sd_pwr_fops,
	mahimahimmc_dbg_sd_pwr_get,
	mahimahimmc_dbg_sd_pwr_set, "%llu\n");

	DEFINE_SIMPLE_ATTRIBUTE(mahimahimmc_dbg_sd_cd_fops,
	mahimahimmc_dbg_sd_cd_get,
	mahimahimmc_dbg_sd_cd_set, "%llu\n");

	static int __init mahimahimmc_dbg_init(void)
	{
	struct dentry *dent;

	if (!machine_is_mahimahi())
	return 0;

	dent = debugfs_create_dir("mahimahi_mmc_dbg", 0);
	if (IS_ERR(dent))
	return PTR_ERR(dent);

	debugfs_create_file("wifi_reset", 0644, dent, NULL,
	&mahimahimmc_dbg_wifi_reset_fops);
	debugfs_create_file("wifi_cd", 0644, dent, NULL,
	&mahimahimmc_dbg_wifi_cd_fops);
	debugfs_create_file("wifi_pwr", 0644, dent, NULL,
	&mahimahimmc_dbg_wifi_pwr_fops);
	debugfs_create_file("sd_pwr", 0644, dent, NULL,
	&mahimahimmc_dbg_sd_pwr_fops);
	debugfs_create_file("sd_cd", 0644, dent, NULL,
	&mahimahimmc_dbg_sd_cd_fops);
	return 0;
	}

	device_initcall(mahimahimmc_dbg_init);
	#endif