arch/arm/mach-tegra/board-dalmore-sdhci.c - linux-2.6 - Gitiles Standalone

 /*
  * arch/arm/mach-tegra/board-dalmore-sdhci.c
  *
  * Copyright (C) 2010 Google, Inc.
  * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
  *
  * 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/resource.h>
 #include <linux/platform_device.h>
 #include <linux/wlan_plat.h>
 #include <linux/delay.h>
 #include <linux/gpio.h>
 #include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/regulator/consumer.h>
 #include <linux/mmc/host.h>
 #include <linux/wl12xx.h>

 #include <asm/mach-types.h>
 #include <mach/irqs.h>
 #include <mach/iomap.h>
 #include <mach/sdhci.h>
 #include<mach/gpio-tegra.h>
 #include <mach/io_dpd.h>

 #include "tegra-board-id.h"
 #include "gpio-names.h"
 #include "board.h"
 #include "board-dalmore.h"
 #include "dvfs.h"

 #define DALMORE_WLAN_PWR	TEGRA_GPIO_PCC5
 #define DALMORE_WLAN_RST	TEGRA_GPIO_PX7
 #define DALMORE_WLAN_WOW	TEGRA_GPIO_PU5
 #define DALMORE_SD_CD		TEGRA_GPIO_PV2
 static void (*wifi_status_cb)(int card_present, void *dev_id);
 static void *wifi_status_cb_devid;
 static int dalmore_wifi_status_register(void (*callback)(int , void *), void *);

 static int dalmore_wifi_reset(int on);
 static int dalmore_wifi_power(int on);
 static int dalmore_wifi_set_carddetect(int val);

 static struct wifi_platform_data dalmore_wifi_control = {
 	.set_power	= dalmore_wifi_power,
 	.set_reset	= dalmore_wifi_reset,
 	.set_carddetect	= dalmore_wifi_set_carddetect,
 };

 static struct resource wifi_resource[] = {
 	[0] = {
 		.name	= "bcm4329_wlan_irq",
 		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL
 				| IORESOURCE_IRQ_SHAREABLE,
 	},
 };

 static struct platform_device dalmore_wifi_device = {
 	.name		= "bcm4329_wlan",
 	.id		= 1,
 	.num_resources	= 1,
 	.resource	= wifi_resource,
 	.dev		= {
 		.platform_data = &dalmore_wifi_control,
 	},
 };

 static struct resource sdhci_resource0[] = {
 	[0] = {
 		.start  = INT_SDMMC1,
 		.end    = INT_SDMMC1,
 		.flags  = IORESOURCE_IRQ,
 	},
 	[1] = {
 		.start	= TEGRA_SDMMC1_BASE,
 		.end	= TEGRA_SDMMC1_BASE + TEGRA_SDMMC1_SIZE-1,
 		.flags	= IORESOURCE_MEM,
 	},
 };

 static struct resource sdhci_resource2[] = {
 	[0] = {
 		.start  = INT_SDMMC3,
 		.end    = INT_SDMMC3,
 		.flags  = IORESOURCE_IRQ,
 	},
 	[1] = {
 		.start	= TEGRA_SDMMC3_BASE,
 		.end	= TEGRA_SDMMC3_BASE + TEGRA_SDMMC3_SIZE-1,
 		.flags	= IORESOURCE_MEM,
 	},
 };

 static struct resource sdhci_resource3[] = {
 	[0] = {
 		.start  = INT_SDMMC4,
 		.end    = INT_SDMMC4,
 		.flags  = IORESOURCE_IRQ,
 	},
 	[1] = {
 		.start	= TEGRA_SDMMC4_BASE,
 		.end	= TEGRA_SDMMC4_BASE + TEGRA_SDMMC4_SIZE-1,
 		.flags	= IORESOURCE_MEM,
 	},
 };

 #ifdef CONFIG_MMC_EMBEDDED_SDIO
 static struct embedded_sdio_data embedded_sdio_data0 = {
 	.cccr   = {
 		.sdio_vsn       = 2,
 		.multi_block    = 1,
 		.low_speed      = 0,
 		.wide_bus       = 0,
 		.high_power     = 1,
 		.high_speed     = 1,
 	},
 	.cis  = {
 		.vendor	 = 0x02d0,
 		.device	 = 0x4329,
 	},
 };
 #endif

 static struct tegra_sdhci_platform_data tegra_sdhci_platform_data0 = {
 	.mmc_data = {
 		.register_status_notify	= dalmore_wifi_status_register,
 #ifdef CONFIG_MMC_EMBEDDED_SDIO
 		.embedded_sdio = &embedded_sdio_data0,
 #endif
 		.built_in = 0,
 		.ocr_mask = MMC_OCR_1V8_MASK,
 	},
 #ifndef CONFIG_MMC_EMBEDDED_SDIO
 	.pm_flags = MMC_PM_KEEP_POWER,
 #endif
 	.cd_gpio = -1,
 	.wp_gpio = -1,
 	.power_gpio = -1,
 	.tap_delay = 0x2,
 	.trim_delay = 0x2,
 	.ddr_clk_limit = 41000000,
 	.max_clk_limit = 82000000,
 	.uhs_mask = MMC_UHS_MASK_DDR50,
 	.edp_support = false,
 };

 static struct tegra_sdhci_platform_data tegra_sdhci_platform_data2 = {
 	.cd_gpio = DALMORE_SD_CD,
 	.wp_gpio = -1,
 	.power_gpio = -1,
 	.tap_delay = 0x3,
 	.trim_delay = 0x3,
 	.ddr_clk_limit = 41000000,
 	.max_clk_limit = 82000000,
 	.uhs_mask = MMC_UHS_MASK_DDR50,
 	.edp_support = true,
 	.edp_states = {966, 0},
 	.power_off_rail = true,
 };

 static struct tegra_sdhci_platform_data tegra_sdhci_platform_data3 = {
 	.cd_gpio = -1,
 	.wp_gpio = -1,
 	.power_gpio = -1,
 	.is_8bit = 1,
 	.tap_delay = 0x5,
 	.trim_delay = 0xA,
 	.ddr_clk_limit = 41000000,
 	.max_clk_limit = 156000000,
 	.mmc_data = {
 		.built_in = 1,
 		.ocr_mask = MMC_OCR_1V8_MASK,
 	},
 	.edp_support = true,
 	.edp_states = {966, 0},
 };

 static struct platform_device tegra_sdhci_device0 = {
 	.name		= "sdhci-tegra",
 	.id		= 0,
 	.resource	= sdhci_resource0,
 	.num_resources	= ARRAY_SIZE(sdhci_resource0),
 	.dev = {
 		.platform_data = &tegra_sdhci_platform_data0,
 	},
 };

 static struct platform_device tegra_sdhci_device2 = {
 	.name		= "sdhci-tegra",
 	.id		= 2,
 	.resource	= sdhci_resource2,
 	.num_resources	= ARRAY_SIZE(sdhci_resource2),
 	.dev = {
 		.platform_data = &tegra_sdhci_platform_data2,
 	},
 };

 static struct platform_device tegra_sdhci_device3 = {
 	.name		= "sdhci-tegra",
 	.id		= 3,
 	.resource	= sdhci_resource3,
 	.num_resources	= ARRAY_SIZE(sdhci_resource3),
 	.dev = {
 		.platform_data = &tegra_sdhci_platform_data3,
 	},
 };

 static int dalmore_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 int dalmore_wifi_set_carddetect(int val)
 {
 	pr_debug("%s: %d\n", __func__, 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 struct regulator *dalmore_vdd_com_3v3;
 static struct regulator *dalmore_vddio_com_1v8;
 #define DALMORE_VDD_WIFI_3V3 "vdd_wifi_3v3"
 #define DALMORE_VDD_WIFI_1V8 "vddio_wifi_1v8"

 static int dalmore_wifi_regulator_enable(void)
 {
 	int ret = 0;

 	/* Enable COM's vdd_com_3v3 regulator*/
 	if (IS_ERR_OR_NULL(dalmore_vdd_com_3v3)) {
 		dalmore_vdd_com_3v3 = regulator_get(&dalmore_wifi_device.dev,
 							DALMORE_VDD_WIFI_3V3);
 		if (IS_ERR_OR_NULL(dalmore_vdd_com_3v3)) {
 			pr_err("Couldn't get regulator "
 				DALMORE_VDD_WIFI_3V3 "\n");
 			return PTR_ERR(dalmore_vdd_com_3v3);
 		}

 		ret = regulator_enable(dalmore_vdd_com_3v3);
 		if (ret < 0) {
 			pr_err("Couldn't enable regulator "
 				DALMORE_VDD_WIFI_3V3 "\n");
 			regulator_put(dalmore_vdd_com_3v3);
 			dalmore_vdd_com_3v3 = NULL;
 			return ret;
 		}
 	}

 	/* Enable COM's vddio_com_1v8 regulator*/
 	if (IS_ERR_OR_NULL(dalmore_vddio_com_1v8)) {
 		dalmore_vddio_com_1v8 = regulator_get(&dalmore_wifi_device.dev,
 			DALMORE_VDD_WIFI_1V8);
 		if (IS_ERR_OR_NULL(dalmore_vddio_com_1v8)) {
 			pr_err("Couldn't get regulator "
 				DALMORE_VDD_WIFI_1V8 "\n");
 			regulator_disable(dalmore_vdd_com_3v3);

 			regulator_put(dalmore_vdd_com_3v3);
 			dalmore_vdd_com_3v3 = NULL;
 			return PTR_ERR(dalmore_vddio_com_1v8);
 		}

 		ret = regulator_enable(dalmore_vddio_com_1v8);
 		if (ret < 0) {
 			pr_err("Couldn't enable regulator "
 				DALMORE_VDD_WIFI_1V8 "\n");
 			regulator_put(dalmore_vddio_com_1v8);
 			dalmore_vddio_com_1v8 = NULL;

 			regulator_disable(dalmore_vdd_com_3v3);
 			regulator_put(dalmore_vdd_com_3v3);
 			dalmore_vdd_com_3v3 = NULL;
 			return ret;
 		}
 	}

 	return ret;
 }

 static void dalmore_wifi_regulator_disable(void)
 {
 	/* Disable COM's vdd_com_3v3 regulator*/
 	if (!IS_ERR_OR_NULL(dalmore_vdd_com_3v3)) {
 		regulator_disable(dalmore_vdd_com_3v3);
 		regulator_put(dalmore_vdd_com_3v3);
 		dalmore_vdd_com_3v3 = NULL;
 	}

 	/* Disable COM's vddio_com_1v8 regulator*/
 	if (!IS_ERR_OR_NULL(dalmore_vddio_com_1v8)) {
 		regulator_disable(dalmore_vddio_com_1v8);
 		regulator_put(dalmore_vddio_com_1v8);
 		dalmore_vddio_com_1v8 = NULL;
 	}
 }

 static int dalmore_wifi_power(int on)
 {
 	int ret = 0;

 	pr_debug("%s: %d\n", __func__, on);
 	/* Enable COM's regulators on wi-fi poer on*/
 	if (on == 1) {
 		ret = dalmore_wifi_regulator_enable();
 		if (ret < 0) {
 			pr_err("Failed to enable COM regulators\n");
 			return ret;
 		}
 	}

 	gpio_set_value(DALMORE_WLAN_PWR, on);
 	mdelay(100);
 	gpio_set_value(DALMORE_WLAN_RST, on);
 	mdelay(200);

 	/* Disable COM's regulators on wi-fi poer off*/
 	if (on != 1) {
 		pr_debug("Disabling COM regulators\n");
 		dalmore_wifi_regulator_disable();
 	}

 	return ret;
 }

 static int dalmore_wifi_reset(int on)
 {
 	pr_debug("%s: do nothing\n", __func__);
 	return 0;
 }

 static int __init dalmore_wifi_init(void)
 {
 	int rc;

 	rc = gpio_request(DALMORE_WLAN_PWR, "wlan_power");
 	if (rc)
 		pr_err("WLAN_PWR gpio request failed:%d\n", rc);
 	rc = gpio_request(DALMORE_WLAN_RST, "wlan_rst");
 	if (rc)
 		pr_err("WLAN_RST gpio request failed:%d\n", rc);
 	rc = gpio_request(DALMORE_WLAN_WOW, "bcmsdh_sdmmc");
 	if (rc)
 		pr_err("WLAN_WOW gpio request failed:%d\n", rc);

 	rc = gpio_direction_output(DALMORE_WLAN_PWR, 0);
 	if (rc)
 		pr_err("WLAN_PWR gpio direction configuration failed:%d\n", rc);
 	gpio_direction_output(DALMORE_WLAN_RST, 0);
 	if (rc)
 		pr_err("WLAN_RST gpio direction configuration failed:%d\n", rc);
 	rc = gpio_direction_input(DALMORE_WLAN_WOW);
 	if (rc)
 		pr_err("WLAN_WOW gpio direction configuration failed:%d\n", rc);

 	wifi_resource[0].start = wifi_resource[0].end =
 		gpio_to_irq(DALMORE_WLAN_WOW);

 	platform_device_register(&dalmore_wifi_device);
 	return 0;
 }

 #ifdef CONFIG_TEGRA_PREPOWER_WIFI
 static int __init dalmore_wifi_prepower(void)
 {
 	if (!machine_is_dalmore())
 		return 0;

 	dalmore_wifi_power(1);

 	return 0;
 }

 subsys_initcall_sync(dalmore_wifi_prepower);
 #endif

 int __init dalmore_sdhci_init(void)
 {
 	int nominal_core_mv;
 	int min_vcore_override_mv;

 	nominal_core_mv =
 		tegra_dvfs_rail_get_nominal_millivolts(tegra_core_rail);
 	if (nominal_core_mv) {
 		tegra_sdhci_platform_data0.nominal_vcore_mv = nominal_core_mv;
 		tegra_sdhci_platform_data2.nominal_vcore_mv = nominal_core_mv;
 		tegra_sdhci_platform_data3.nominal_vcore_mv = nominal_core_mv;
 	}
 	min_vcore_override_mv =
 		tegra_dvfs_rail_get_override_floor(tegra_core_rail);
 	if (min_vcore_override_mv) {
 		tegra_sdhci_platform_data0.min_vcore_override_mv =
 			min_vcore_override_mv;
 		tegra_sdhci_platform_data2.min_vcore_override_mv =
 			min_vcore_override_mv;
 		tegra_sdhci_platform_data3.min_vcore_override_mv =
 			min_vcore_override_mv;
 	}
 	if ((tegra_sdhci_platform_data3.uhs_mask & MMC_MASK_HS200)
 		&& (!(tegra_sdhci_platform_data3.uhs_mask &
 		MMC_UHS_MASK_DDR50)))
 		tegra_sdhci_platform_data3.trim_delay = 0;

 	platform_device_register(&tegra_sdhci_device3);
 	platform_device_register(&tegra_sdhci_device2);
 	platform_device_register(&tegra_sdhci_device0);
 	dalmore_wifi_init();
 	return 0;
 }
	/*
	* arch/arm/mach-tegra/board-dalmore-sdhci.c
	*
	* Copyright (C) 2010 Google, Inc.
	* Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
	*
	* 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/resource.h>
	#include <linux/platform_device.h>
	#include <linux/wlan_plat.h>
	#include <linux/delay.h>
	#include <linux/gpio.h>
	#include <linux/clk.h>
	#include <linux/err.h>
	#include <linux/regulator/consumer.h>
	#include <linux/mmc/host.h>
	#include <linux/wl12xx.h>

	#include <asm/mach-types.h>
	#include <mach/irqs.h>
	#include <mach/iomap.h>
	#include <mach/sdhci.h>
	#include<mach/gpio-tegra.h>
	#include <mach/io_dpd.h>

	#include "tegra-board-id.h"
	#include "gpio-names.h"
	#include "board.h"
	#include "board-dalmore.h"
	#include "dvfs.h"

	#define DALMORE_WLAN_PWR TEGRA_GPIO_PCC5
	#define DALMORE_WLAN_RST TEGRA_GPIO_PX7
	#define DALMORE_WLAN_WOW TEGRA_GPIO_PU5
	#define DALMORE_SD_CD TEGRA_GPIO_PV2
	static void (wifi_status_cb)(int card_present, void dev_id);
	static void *wifi_status_cb_devid;
	static int dalmore_wifi_status_register(void (callback)(int , void ), void *);

	static int dalmore_wifi_reset(int on);
	static int dalmore_wifi_power(int on);
	static int dalmore_wifi_set_carddetect(int val);

	static struct wifi_platform_data dalmore_wifi_control = {
	.set_power = dalmore_wifi_power,
	.set_reset = dalmore_wifi_reset,
	.set_carddetect = dalmore_wifi_set_carddetect,
	};

	static struct resource wifi_resource[] = {
	[0] = {
	.name = "bcm4329_wlan_irq",
	.flags = IORESOURCE_IRQ \| IORESOURCE_IRQ_HIGHLEVEL
	\| IORESOURCE_IRQ_SHAREABLE,
	},
	};

	static struct platform_device dalmore_wifi_device = {
	.name = "bcm4329_wlan",
	.id = 1,
	.num_resources = 1,
	.resource = wifi_resource,
	.dev = {
	.platform_data = &dalmore_wifi_control,
	},
	};

	static struct resource sdhci_resource0[] = {
	[0] = {
	.start = INT_SDMMC1,
	.end = INT_SDMMC1,
	.flags = IORESOURCE_IRQ,
	},
	[1] = {
	.start = TEGRA_SDMMC1_BASE,
	.end = TEGRA_SDMMC1_BASE + TEGRA_SDMMC1_SIZE-1,
	.flags = IORESOURCE_MEM,
	},
	};

	static struct resource sdhci_resource2[] = {
	[0] = {
	.start = INT_SDMMC3,
	.end = INT_SDMMC3,
	.flags = IORESOURCE_IRQ,
	},
	[1] = {
	.start = TEGRA_SDMMC3_BASE,
	.end = TEGRA_SDMMC3_BASE + TEGRA_SDMMC3_SIZE-1,
	.flags = IORESOURCE_MEM,
	},
	};

	static struct resource sdhci_resource3[] = {
	[0] = {
	.start = INT_SDMMC4,
	.end = INT_SDMMC4,
	.flags = IORESOURCE_IRQ,
	},
	[1] = {
	.start = TEGRA_SDMMC4_BASE,
	.end = TEGRA_SDMMC4_BASE + TEGRA_SDMMC4_SIZE-1,
	.flags = IORESOURCE_MEM,
	},
	};

	#ifdef CONFIG_MMC_EMBEDDED_SDIO
	static struct embedded_sdio_data embedded_sdio_data0 = {
	.cccr = {
	.sdio_vsn = 2,
	.multi_block = 1,
	.low_speed = 0,
	.wide_bus = 0,
	.high_power = 1,
	.high_speed = 1,
	},
	.cis = {
	.vendor = 0x02d0,
	.device = 0x4329,
	},
	};
	#endif

	static struct tegra_sdhci_platform_data tegra_sdhci_platform_data0 = {
	.mmc_data = {
	.register_status_notify = dalmore_wifi_status_register,
	#ifdef CONFIG_MMC_EMBEDDED_SDIO
	.embedded_sdio = &embedded_sdio_data0,
	#endif
	.built_in = 0,
	.ocr_mask = MMC_OCR_1V8_MASK,
	},
	#ifndef CONFIG_MMC_EMBEDDED_SDIO
	.pm_flags = MMC_PM_KEEP_POWER,
	#endif
	.cd_gpio = -1,
	.wp_gpio = -1,
	.power_gpio = -1,
	.tap_delay = 0x2,
	.trim_delay = 0x2,
	.ddr_clk_limit = 41000000,
	.max_clk_limit = 82000000,
	.uhs_mask = MMC_UHS_MASK_DDR50,
	.edp_support = false,
	};

	static struct tegra_sdhci_platform_data tegra_sdhci_platform_data2 = {
	.cd_gpio = DALMORE_SD_CD,
	.wp_gpio = -1,
	.power_gpio = -1,
	.tap_delay = 0x3,
	.trim_delay = 0x3,
	.ddr_clk_limit = 41000000,
	.max_clk_limit = 82000000,
	.uhs_mask = MMC_UHS_MASK_DDR50,
	.edp_support = true,
	.edp_states = {966, 0},
	.power_off_rail = true,
	};

	static struct tegra_sdhci_platform_data tegra_sdhci_platform_data3 = {
	.cd_gpio = -1,
	.wp_gpio = -1,
	.power_gpio = -1,
	.is_8bit = 1,
	.tap_delay = 0x5,
	.trim_delay = 0xA,
	.ddr_clk_limit = 41000000,
	.max_clk_limit = 156000000,
	.mmc_data = {
	.built_in = 1,
	.ocr_mask = MMC_OCR_1V8_MASK,
	},
	.edp_support = true,
	.edp_states = {966, 0},
	};

	static struct platform_device tegra_sdhci_device0 = {
	.name = "sdhci-tegra",
	.id = 0,
	.resource = sdhci_resource0,
	.num_resources = ARRAY_SIZE(sdhci_resource0),
	.dev = {
	.platform_data = &tegra_sdhci_platform_data0,
	},
	};

	static struct platform_device tegra_sdhci_device2 = {
	.name = "sdhci-tegra",
	.id = 2,
	.resource = sdhci_resource2,
	.num_resources = ARRAY_SIZE(sdhci_resource2),
	.dev = {
	.platform_data = &tegra_sdhci_platform_data2,
	},
	};

	static struct platform_device tegra_sdhci_device3 = {
	.name = "sdhci-tegra",
	.id = 3,
	.resource = sdhci_resource3,
	.num_resources = ARRAY_SIZE(sdhci_resource3),
	.dev = {
	.platform_data = &tegra_sdhci_platform_data3,
	},
	};

	static int dalmore_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 int dalmore_wifi_set_carddetect(int val)
	{
	pr_debug("%s: %d\n", __func__, 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 struct regulator *dalmore_vdd_com_3v3;
	static struct regulator *dalmore_vddio_com_1v8;
	#define DALMORE_VDD_WIFI_3V3 "vdd_wifi_3v3"
	#define DALMORE_VDD_WIFI_1V8 "vddio_wifi_1v8"

	static int dalmore_wifi_regulator_enable(void)
	{
	int ret = 0;

	/* Enable COM's vdd_com_3v3 regulator*/
	if (IS_ERR_OR_NULL(dalmore_vdd_com_3v3)) {
	dalmore_vdd_com_3v3 = regulator_get(&dalmore_wifi_device.dev,
	DALMORE_VDD_WIFI_3V3);
	if (IS_ERR_OR_NULL(dalmore_vdd_com_3v3)) {
	pr_err("Couldn't get regulator "
	DALMORE_VDD_WIFI_3V3 "\n");
	return PTR_ERR(dalmore_vdd_com_3v3);
	}

	ret = regulator_enable(dalmore_vdd_com_3v3);
	if (ret < 0) {
	pr_err("Couldn't enable regulator "
	DALMORE_VDD_WIFI_3V3 "\n");
	regulator_put(dalmore_vdd_com_3v3);
	dalmore_vdd_com_3v3 = NULL;
	return ret;
	}
	}

	/* Enable COM's vddio_com_1v8 regulator*/
	if (IS_ERR_OR_NULL(dalmore_vddio_com_1v8)) {
	dalmore_vddio_com_1v8 = regulator_get(&dalmore_wifi_device.dev,
	DALMORE_VDD_WIFI_1V8);
	if (IS_ERR_OR_NULL(dalmore_vddio_com_1v8)) {
	pr_err("Couldn't get regulator "
	DALMORE_VDD_WIFI_1V8 "\n");
	regulator_disable(dalmore_vdd_com_3v3);

	regulator_put(dalmore_vdd_com_3v3);
	dalmore_vdd_com_3v3 = NULL;
	return PTR_ERR(dalmore_vddio_com_1v8);
	}

	ret = regulator_enable(dalmore_vddio_com_1v8);
	if (ret < 0) {
	pr_err("Couldn't enable regulator "
	DALMORE_VDD_WIFI_1V8 "\n");
	regulator_put(dalmore_vddio_com_1v8);
	dalmore_vddio_com_1v8 = NULL;

	regulator_disable(dalmore_vdd_com_3v3);
	regulator_put(dalmore_vdd_com_3v3);
	dalmore_vdd_com_3v3 = NULL;
	return ret;
	}
	}

	return ret;
	}

	static void dalmore_wifi_regulator_disable(void)
	{
	/* Disable COM's vdd_com_3v3 regulator*/
	if (!IS_ERR_OR_NULL(dalmore_vdd_com_3v3)) {
	regulator_disable(dalmore_vdd_com_3v3);
	regulator_put(dalmore_vdd_com_3v3);
	dalmore_vdd_com_3v3 = NULL;
	}

	/* Disable COM's vddio_com_1v8 regulator*/
	if (!IS_ERR_OR_NULL(dalmore_vddio_com_1v8)) {
	regulator_disable(dalmore_vddio_com_1v8);
	regulator_put(dalmore_vddio_com_1v8);
	dalmore_vddio_com_1v8 = NULL;
	}
	}

	static int dalmore_wifi_power(int on)
	{
	int ret = 0;

	pr_debug("%s: %d\n", __func__, on);
	/* Enable COM's regulators on wi-fi poer on*/
	if (on == 1) {
	ret = dalmore_wifi_regulator_enable();
	if (ret < 0) {
	pr_err("Failed to enable COM regulators\n");
	return ret;
	}
	}

	gpio_set_value(DALMORE_WLAN_PWR, on);
	mdelay(100);
	gpio_set_value(DALMORE_WLAN_RST, on);
	mdelay(200);

	/* Disable COM's regulators on wi-fi poer off*/
	if (on != 1) {
	pr_debug("Disabling COM regulators\n");
	dalmore_wifi_regulator_disable();
	}

	return ret;
	}

	static int dalmore_wifi_reset(int on)
	{
	pr_debug("%s: do nothing\n", __func__);
	return 0;
	}

	static int __init dalmore_wifi_init(void)
	{
	int rc;

	rc = gpio_request(DALMORE_WLAN_PWR, "wlan_power");
	if (rc)
	pr_err("WLAN_PWR gpio request failed:%d\n", rc);
	rc = gpio_request(DALMORE_WLAN_RST, "wlan_rst");
	if (rc)
	pr_err("WLAN_RST gpio request failed:%d\n", rc);
	rc = gpio_request(DALMORE_WLAN_WOW, "bcmsdh_sdmmc");
	if (rc)
	pr_err("WLAN_WOW gpio request failed:%d\n", rc);

	rc = gpio_direction_output(DALMORE_WLAN_PWR, 0);
	if (rc)
	pr_err("WLAN_PWR gpio direction configuration failed:%d\n", rc);
	gpio_direction_output(DALMORE_WLAN_RST, 0);
	if (rc)
	pr_err("WLAN_RST gpio direction configuration failed:%d\n", rc);
	rc = gpio_direction_input(DALMORE_WLAN_WOW);
	if (rc)
	pr_err("WLAN_WOW gpio direction configuration failed:%d\n", rc);

	wifi_resource[0].start = wifi_resource[0].end =
	gpio_to_irq(DALMORE_WLAN_WOW);

	platform_device_register(&dalmore_wifi_device);
	return 0;
	}

	#ifdef CONFIG_TEGRA_PREPOWER_WIFI
	static int __init dalmore_wifi_prepower(void)
	{
	if (!machine_is_dalmore())
	return 0;

	dalmore_wifi_power(1);

	return 0;
	}

	subsys_initcall_sync(dalmore_wifi_prepower);
	#endif

	int __init dalmore_sdhci_init(void)
	{
	int nominal_core_mv;
	int min_vcore_override_mv;

	nominal_core_mv =
	tegra_dvfs_rail_get_nominal_millivolts(tegra_core_rail);
	if (nominal_core_mv) {
	tegra_sdhci_platform_data0.nominal_vcore_mv = nominal_core_mv;
	tegra_sdhci_platform_data2.nominal_vcore_mv = nominal_core_mv;
	tegra_sdhci_platform_data3.nominal_vcore_mv = nominal_core_mv;
	}
	min_vcore_override_mv =
	tegra_dvfs_rail_get_override_floor(tegra_core_rail);
	if (min_vcore_override_mv) {
	tegra_sdhci_platform_data0.min_vcore_override_mv =
	min_vcore_override_mv;
	tegra_sdhci_platform_data2.min_vcore_override_mv =
	min_vcore_override_mv;
	tegra_sdhci_platform_data3.min_vcore_override_mv =
	min_vcore_override_mv;
	}
	if ((tegra_sdhci_platform_data3.uhs_mask & MMC_MASK_HS200)
	&& (!(tegra_sdhci_platform_data3.uhs_mask &
	MMC_UHS_MASK_DDR50)))
	tegra_sdhci_platform_data3.trim_delay = 0;

	platform_device_register(&tegra_sdhci_device3);
	platform_device_register(&tegra_sdhci_device2);
	platform_device_register(&tegra_sdhci_device0);
	dalmore_wifi_init();
	return 0;
	}