arch/arm/mach-imx/mach-mx31ads.c - linux - Git at Google

 /*
  *  Copyright (C) 2000 Deep Blue Solutions Ltd
  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
  *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
  * 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/types.h>
 #include <linux/init.h>
 #include <linux/clk.h>
 #include <linux/serial_8250.h>
 #include <linux/gpio.h>
 #include <linux/i2c.h>
 #include <linux/irq.h>

 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/time.h>
 #include <asm/memory.h>
 #include <asm/mach/map.h>
 #include <mach/common.h>
 #include <mach/board-mx31ads.h>
 #include <mach/iomux-mx3.h>

 #ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
 #include <linux/mfd/wm8350/audio.h>
 #include <linux/mfd/wm8350/core.h>
 #include <linux/mfd/wm8350/pmic.h>
 #endif

 #include "devices-imx31.h"

 /* PBC Board interrupt status register */
 #define PBC_INTSTATUS           0x000016

 /* PBC Board interrupt current status register */
 #define PBC_INTCURR_STATUS      0x000018

 /* PBC Interrupt mask register set address */
 #define PBC_INTMASK_SET         0x00001A

 /* PBC Interrupt mask register clear address */
 #define PBC_INTMASK_CLEAR       0x00001C

 /* External UART A */
 #define PBC_SC16C652_UARTA      0x010000

 /* External UART B */
 #define PBC_SC16C652_UARTB      0x010010

 #define PBC_INTSTATUS_REG	(PBC_INTSTATUS + PBC_BASE_ADDRESS)
 #define PBC_INTMASK_SET_REG	(PBC_INTMASK_SET + PBC_BASE_ADDRESS)
 #define PBC_INTMASK_CLEAR_REG	(PBC_INTMASK_CLEAR + PBC_BASE_ADDRESS)
 #define EXPIO_PARENT_INT	IOMUX_TO_IRQ(MX31_PIN_GPIO1_4)

 #define MXC_IRQ_TO_EXPIO(irq)	((irq) - MXC_EXP_IO_BASE)

 #define EXPIO_INT_XUART_INTA	(MXC_EXP_IO_BASE + 10)
 #define EXPIO_INT_XUART_INTB	(MXC_EXP_IO_BASE + 11)

 #define MXC_MAX_EXP_IO_LINES	16

 /*
  * The serial port definition structure.
  */
 static struct plat_serial8250_port serial_platform_data[] = {
 	{
 		.membase  = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTA),
 		.mapbase  = (unsigned long)(MX31_CS4_BASE_ADDR + PBC_SC16C652_UARTA),
 		.irq      = EXPIO_INT_XUART_INTA,
 		.uartclk  = 14745600,
 		.regshift = 0,
 		.iotype   = UPIO_MEM,
 		.flags    = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ,
 	}, {
 		.membase  = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTB),
 		.mapbase  = (unsigned long)(MX31_CS4_BASE_ADDR + PBC_SC16C652_UARTB),
 		.irq      = EXPIO_INT_XUART_INTB,
 		.uartclk  = 14745600,
 		.regshift = 0,
 		.iotype   = UPIO_MEM,
 		.flags    = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ,
 	},
 	{},
 };

 static struct platform_device serial_device = {
 	.name	= "serial8250",
 	.id	= 0,
 	.dev	= {
 		.platform_data = serial_platform_data,
 	},
 };

 static int __init mxc_init_extuart(void)
 {
 	return platform_device_register(&serial_device);
 }

 static const struct imxuart_platform_data uart_pdata __initconst = {
 	.flags = IMXUART_HAVE_RTSCTS,
 };

 static unsigned int uart_pins[] = {
 	MX31_PIN_CTS1__CTS1,
 	MX31_PIN_RTS1__RTS1,
 	MX31_PIN_TXD1__TXD1,
 	MX31_PIN_RXD1__RXD1
 };

 static inline void mxc_init_imx_uart(void)
 {
 	mxc_iomux_setup_multiple_pins(uart_pins, ARRAY_SIZE(uart_pins), "uart-0");
 	imx31_add_imx_uart0(&uart_pdata);
 }

 static void mx31ads_expio_irq_handler(u32 irq, struct irq_desc *desc)
 {
 	u32 imr_val;
 	u32 int_valid;
 	u32 expio_irq;

 	imr_val = __raw_readw(PBC_INTMASK_SET_REG);
 	int_valid = __raw_readw(PBC_INTSTATUS_REG) & imr_val;

 	expio_irq = MXC_EXP_IO_BASE;
 	for (; int_valid != 0; int_valid >>= 1, expio_irq++) {
 		if ((int_valid & 1) == 0)
 			continue;

 		generic_handle_irq(expio_irq);
 	}
 }

 /*
  * Disable an expio pin's interrupt by setting the bit in the imr.
  * @param d	an expio virtual irq description
  */
 static void expio_mask_irq(struct irq_data *d)
 {
 	u32 expio = MXC_IRQ_TO_EXPIO(d->irq);
 	/* mask the interrupt */
 	__raw_writew(1 << expio, PBC_INTMASK_CLEAR_REG);
 	__raw_readw(PBC_INTMASK_CLEAR_REG);
 }

 /*
  * Acknowledge an expanded io pin's interrupt by clearing the bit in the isr.
  * @param d	an expio virtual irq description
  */
 static void expio_ack_irq(struct irq_data *d)
 {
 	u32 expio = MXC_IRQ_TO_EXPIO(d->irq);
 	/* clear the interrupt status */
 	__raw_writew(1 << expio, PBC_INTSTATUS_REG);
 }

 /*
  * Enable a expio pin's interrupt by clearing the bit in the imr.
  * @param d	an expio virtual irq description
  */
 static void expio_unmask_irq(struct irq_data *d)
 {
 	u32 expio = MXC_IRQ_TO_EXPIO(d->irq);
 	/* unmask the interrupt */
 	__raw_writew(1 << expio, PBC_INTMASK_SET_REG);
 }

 static struct irq_chip expio_irq_chip = {
 	.name = "EXPIO(CPLD)",
 	.irq_ack = expio_ack_irq,
 	.irq_mask = expio_mask_irq,
 	.irq_unmask = expio_unmask_irq,
 };

 static void __init mx31ads_init_expio(void)
 {
 	int i;

 	printk(KERN_INFO "MX31ADS EXPIO(CPLD) hardware\n");

 	/*
 	 * Configure INT line as GPIO input
 	 */
 	mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_GPIO1_4, IOMUX_CONFIG_GPIO), "expio");

 	/* disable the interrupt and clear the status */
 	__raw_writew(0xFFFF, PBC_INTMASK_CLEAR_REG);
 	__raw_writew(0xFFFF, PBC_INTSTATUS_REG);
 	for (i = MXC_EXP_IO_BASE; i < (MXC_EXP_IO_BASE + MXC_MAX_EXP_IO_LINES);
 	     i++) {
 		irq_set_chip_and_handler(i, &expio_irq_chip, handle_level_irq);
 		set_irq_flags(i, IRQF_VALID);
 	}
 	irq_set_irq_type(EXPIO_PARENT_INT, IRQ_TYPE_LEVEL_HIGH);
 	irq_set_chained_handler(EXPIO_PARENT_INT, mx31ads_expio_irq_handler);
 }

 #ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
 /* This section defines setup for the Wolfson Microelectronics
  * 1133-EV1 PMU/audio board.  When other PMU boards are supported the
  * regulator definitions may be shared with them, but for now they can
  * only be used with this board so would generate warnings about
  * unused statics and some of the configuration is specific to this
  * module.
  */

 /* CPU */
 static struct regulator_consumer_supply sw1a_consumers[] = {
 	{
 		.supply = "cpu_vcc",
 	}
 };

 static struct regulator_init_data sw1a_data = {
 	.constraints = {
 		.name = "SW1A",
 		.min_uV = 1275000,
 		.max_uV = 1600000,
 		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 				  REGULATOR_CHANGE_MODE,
 		.valid_modes_mask = REGULATOR_MODE_NORMAL |
 				    REGULATOR_MODE_FAST,
 		.state_mem = {
 			 .uV = 1400000,
 			 .mode = REGULATOR_MODE_NORMAL,
 			 .enabled = 1,
 		 },
 		.initial_state = PM_SUSPEND_MEM,
 		.always_on = 1,
 		.boot_on = 1,
 	},
 	.num_consumer_supplies = ARRAY_SIZE(sw1a_consumers),
 	.consumer_supplies = sw1a_consumers,
 };

 /* System IO - High */
 static struct regulator_init_data viohi_data = {
 	.constraints = {
 		.name = "VIOHO",
 		.min_uV = 2800000,
 		.max_uV = 2800000,
 		.state_mem = {
 			 .uV = 2800000,
 			 .mode = REGULATOR_MODE_NORMAL,
 			 .enabled = 1,
 		 },
 		.initial_state = PM_SUSPEND_MEM,
 		.always_on = 1,
 		.boot_on = 1,
 	},
 };

 /* System IO - Low */
 static struct regulator_init_data violo_data = {
 	.constraints = {
 		.name = "VIOLO",
 		.min_uV = 1800000,
 		.max_uV = 1800000,
 		.state_mem = {
 			 .uV = 1800000,
 			 .mode = REGULATOR_MODE_NORMAL,
 			 .enabled = 1,
 		 },
 		.initial_state = PM_SUSPEND_MEM,
 		.always_on = 1,
 		.boot_on = 1,
 	},
 };

 /* DDR RAM */
 static struct regulator_init_data sw2a_data = {
 	.constraints = {
 		.name = "SW2A",
 		.min_uV = 1800000,
 		.max_uV = 1800000,
 		.valid_modes_mask = REGULATOR_MODE_NORMAL,
 		.state_mem = {
 			 .uV = 1800000,
 			 .mode = REGULATOR_MODE_NORMAL,
 			 .enabled = 1,
 		 },
 		.state_disk = {
 			 .mode = REGULATOR_MODE_NORMAL,
 			 .enabled = 0,
 		 },
 		.always_on = 1,
 		.boot_on = 1,
 		.initial_state = PM_SUSPEND_MEM,
 	},
 };

 static struct regulator_init_data ldo1_data = {
 	.constraints = {
 		.name = "VCAM/VMMC1/VMMC2",
 		.min_uV = 2800000,
 		.max_uV = 2800000,
 		.valid_modes_mask = REGULATOR_MODE_NORMAL,
 		.valid_ops_mask = REGULATOR_CHANGE_STATUS,
 		.apply_uV = 1,
 	},
 };

 static struct regulator_consumer_supply ldo2_consumers[] = {
 	{ .supply = "AVDD", .dev_name = "1-001a" },
 	{ .supply = "HPVDD", .dev_name = "1-001a" },
 };

 /* CODEC and SIM */
 static struct regulator_init_data ldo2_data = {
 	.constraints = {
 		.name = "VESIM/VSIM/AVDD",
 		.min_uV = 3300000,
 		.max_uV = 3300000,
 		.valid_modes_mask = REGULATOR_MODE_NORMAL,
 		.valid_ops_mask = REGULATOR_CHANGE_STATUS,
 		.apply_uV = 1,
 	},
 	.num_consumer_supplies = ARRAY_SIZE(ldo2_consumers),
 	.consumer_supplies = ldo2_consumers,
 };

 /* General */
 static struct regulator_init_data vdig_data = {
 	.constraints = {
 		.name = "VDIG",
 		.min_uV = 1500000,
 		.max_uV = 1500000,
 		.valid_modes_mask = REGULATOR_MODE_NORMAL,
 		.apply_uV = 1,
 		.always_on = 1,
 		.boot_on = 1,
 	},
 };

 /* Tranceivers */
 static struct regulator_init_data ldo4_data = {
 	.constraints = {
 		.name = "VRF1/CVDD_2.775",
 		.min_uV = 2500000,
 		.max_uV = 2500000,
 		.valid_modes_mask = REGULATOR_MODE_NORMAL,
 		.apply_uV = 1,
 		.always_on = 1,
 		.boot_on = 1,
 	},
 };

 static struct wm8350_led_platform_data wm8350_led_data = {
 	.name            = "wm8350:white",
 	.default_trigger = "heartbeat",
 	.max_uA          = 27899,
 };

 static struct wm8350_audio_platform_data imx32ads_wm8350_setup = {
 	.vmid_discharge_msecs = 1000,
 	.drain_msecs = 30,
 	.cap_discharge_msecs = 700,
 	.vmid_charge_msecs = 700,
 	.vmid_s_curve = WM8350_S_CURVE_SLOW,
 	.dis_out4 = WM8350_DISCHARGE_SLOW,
 	.dis_out3 = WM8350_DISCHARGE_SLOW,
 	.dis_out2 = WM8350_DISCHARGE_SLOW,
 	.dis_out1 = WM8350_DISCHARGE_SLOW,
 	.vroi_out4 = WM8350_TIE_OFF_500R,
 	.vroi_out3 = WM8350_TIE_OFF_500R,
 	.vroi_out2 = WM8350_TIE_OFF_500R,
 	.vroi_out1 = WM8350_TIE_OFF_500R,
 	.vroi_enable = 0,
 	.codec_current_on = WM8350_CODEC_ISEL_1_0,
 	.codec_current_standby = WM8350_CODEC_ISEL_0_5,
 	.codec_current_charge = WM8350_CODEC_ISEL_1_5,
 };

 static int mx31_wm8350_init(struct wm8350 *wm8350)
 {
 	wm8350_gpio_config(wm8350, 0, WM8350_GPIO_DIR_IN,
 			   WM8350_GPIO0_PWR_ON_IN, WM8350_GPIO_ACTIVE_LOW,
 			   WM8350_GPIO_PULL_UP, WM8350_GPIO_INVERT_OFF,
 			   WM8350_GPIO_DEBOUNCE_ON);

 	wm8350_gpio_config(wm8350, 3, WM8350_GPIO_DIR_IN,
 			   WM8350_GPIO3_PWR_OFF_IN, WM8350_GPIO_ACTIVE_HIGH,
 			   WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
 			   WM8350_GPIO_DEBOUNCE_ON);

 	wm8350_gpio_config(wm8350, 4, WM8350_GPIO_DIR_IN,
 			   WM8350_GPIO4_MR_IN, WM8350_GPIO_ACTIVE_HIGH,
 			   WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
 			   WM8350_GPIO_DEBOUNCE_OFF);

 	wm8350_gpio_config(wm8350, 7, WM8350_GPIO_DIR_IN,
 			   WM8350_GPIO7_HIBERNATE_IN, WM8350_GPIO_ACTIVE_HIGH,
 			   WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
 			   WM8350_GPIO_DEBOUNCE_OFF);

 	wm8350_gpio_config(wm8350, 6, WM8350_GPIO_DIR_OUT,
 			   WM8350_GPIO6_SDOUT_OUT, WM8350_GPIO_ACTIVE_HIGH,
 			   WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
 			   WM8350_GPIO_DEBOUNCE_OFF);

 	wm8350_gpio_config(wm8350, 8, WM8350_GPIO_DIR_OUT,
 			   WM8350_GPIO8_VCC_FAULT_OUT, WM8350_GPIO_ACTIVE_LOW,
 			   WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
 			   WM8350_GPIO_DEBOUNCE_OFF);

 	wm8350_gpio_config(wm8350, 9, WM8350_GPIO_DIR_OUT,
 			   WM8350_GPIO9_BATT_FAULT_OUT, WM8350_GPIO_ACTIVE_LOW,
 			   WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
 			   WM8350_GPIO_DEBOUNCE_OFF);

 	wm8350_register_regulator(wm8350, WM8350_DCDC_1, &sw1a_data);
 	wm8350_register_regulator(wm8350, WM8350_DCDC_3, &viohi_data);
 	wm8350_register_regulator(wm8350, WM8350_DCDC_4, &violo_data);
 	wm8350_register_regulator(wm8350, WM8350_DCDC_6, &sw2a_data);
 	wm8350_register_regulator(wm8350, WM8350_LDO_1, &ldo1_data);
 	wm8350_register_regulator(wm8350, WM8350_LDO_2, &ldo2_data);
 	wm8350_register_regulator(wm8350, WM8350_LDO_3, &vdig_data);
 	wm8350_register_regulator(wm8350, WM8350_LDO_4, &ldo4_data);

 	/* LEDs */
 	wm8350_dcdc_set_slot(wm8350, WM8350_DCDC_5, 1, 1,
 			     WM8350_DC5_ERRACT_SHUTDOWN_CONV);
 	wm8350_isink_set_flash(wm8350, WM8350_ISINK_A,
 			       WM8350_ISINK_FLASH_DISABLE,
 			       WM8350_ISINK_FLASH_TRIG_BIT,
 			       WM8350_ISINK_FLASH_DUR_32MS,
 			       WM8350_ISINK_FLASH_ON_INSTANT,
 			       WM8350_ISINK_FLASH_OFF_INSTANT,
 			       WM8350_ISINK_FLASH_MODE_EN);
 	wm8350_dcdc25_set_mode(wm8350, WM8350_DCDC_5,
 			       WM8350_ISINK_MODE_BOOST,
 			       WM8350_ISINK_ILIM_NORMAL,
 			       WM8350_DC5_RMP_20V,
 			       WM8350_DC5_FBSRC_ISINKA);
 	wm8350_register_led(wm8350, 0, WM8350_DCDC_5, WM8350_ISINK_A,
 			    &wm8350_led_data);

 	wm8350->codec.platform_data = &imx32ads_wm8350_setup;

 	regulator_has_full_constraints();

 	return 0;
 }

 static struct wm8350_platform_data __initdata mx31_wm8350_pdata = {
 	.init = mx31_wm8350_init,
 	.irq_base = MXC_BOARD_IRQ_START + MXC_MAX_EXP_IO_LINES,
 };
 #endif

 static struct i2c_board_info __initdata mx31ads_i2c1_devices[] = {
 #ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
 	{
 		I2C_BOARD_INFO("wm8350", 0x1a),
 		.platform_data = &mx31_wm8350_pdata,
 		.irq = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
 	},
 #endif
 };

 static void __init mxc_init_i2c(void)
 {
 	i2c_register_board_info(1, mx31ads_i2c1_devices,
 				ARRAY_SIZE(mx31ads_i2c1_devices));

 	mxc_iomux_mode(IOMUX_MODE(MX31_PIN_CSPI2_MOSI, IOMUX_CONFIG_ALT1));
 	mxc_iomux_mode(IOMUX_MODE(MX31_PIN_CSPI2_MISO, IOMUX_CONFIG_ALT1));

 	imx31_add_imx_i2c1(NULL);
 }

 static unsigned int ssi_pins[] = {
 	MX31_PIN_SFS5__SFS5,
 	MX31_PIN_SCK5__SCK5,
 	MX31_PIN_SRXD5__SRXD5,
 	MX31_PIN_STXD5__STXD5,
 };

 static void __init mxc_init_audio(void)
 {
 	imx31_add_imx_ssi(0, NULL);
 	mxc_iomux_setup_multiple_pins(ssi_pins, ARRAY_SIZE(ssi_pins), "ssi");
 }

 /* static mappings */
 static struct map_desc mx31ads_io_desc[] __initdata = {
 	{
 		.virtual	= MX31_CS4_BASE_ADDR_VIRT,
 		.pfn		= __phys_to_pfn(MX31_CS4_BASE_ADDR),
 		.length		= MX31_CS4_SIZE / 2,
 		.type		= MT_DEVICE
 	},
 };

 static void __init mx31ads_map_io(void)
 {
 	mx31_map_io();
 	iotable_init(mx31ads_io_desc, ARRAY_SIZE(mx31ads_io_desc));
 }

 static void __init mx31ads_init_irq(void)
 {
 	mx31_init_irq();
 	mx31ads_init_expio();
 }

 static void __init mx31ads_init(void)
 {
 	imx31_soc_init();

 	mxc_init_extuart();
 	mxc_init_imx_uart();
 	mxc_init_i2c();
 	mxc_init_audio();
 }

 static void __init mx31ads_timer_init(void)
 {
 	mx31_clocks_init(26000000);
 }

 static struct sys_timer mx31ads_timer = {
 	.init	= mx31ads_timer_init,
 };

 MACHINE_START(MX31ADS, "Freescale MX31ADS")
 	/* Maintainer: Freescale Semiconductor, Inc. */
 	.boot_params = MX3x_PHYS_OFFSET + 0x100,
 	.map_io = mx31ads_map_io,
 	.init_early = imx31_init_early,
 	.init_irq = mx31ads_init_irq,
 	.handle_irq = imx31_handle_irq,
 	.timer = &mx31ads_timer,
 	.init_machine = mx31ads_init,
 MACHINE_END
	/*
	* Copyright (C) 2000 Deep Blue Solutions Ltd
	* Copyright (C) 2002 Shane Nay (shane@minirl.com)
	* Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* 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/types.h>
	#include <linux/init.h>
	#include <linux/clk.h>
	#include <linux/serial_8250.h>
	#include <linux/gpio.h>
	#include <linux/i2c.h>
	#include <linux/irq.h>

	#include <asm/mach-types.h>
	#include <asm/mach/arch.h>
	#include <asm/mach/time.h>
	#include <asm/memory.h>
	#include <asm/mach/map.h>
	#include <mach/common.h>
	#include <mach/board-mx31ads.h>
	#include <mach/iomux-mx3.h>

	#ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
	#include <linux/mfd/wm8350/audio.h>
	#include <linux/mfd/wm8350/core.h>
	#include <linux/mfd/wm8350/pmic.h>
	#endif

	#include "devices-imx31.h"

	/* PBC Board interrupt status register */
	#define PBC_INTSTATUS 0x000016

	/* PBC Board interrupt current status register */
	#define PBC_INTCURR_STATUS 0x000018

	/* PBC Interrupt mask register set address */
	#define PBC_INTMASK_SET 0x00001A

	/* PBC Interrupt mask register clear address */
	#define PBC_INTMASK_CLEAR 0x00001C

	/* External UART A */
	#define PBC_SC16C652_UARTA 0x010000

	/* External UART B */
	#define PBC_SC16C652_UARTB 0x010010

	#define PBC_INTSTATUS_REG (PBC_INTSTATUS + PBC_BASE_ADDRESS)
	#define PBC_INTMASK_SET_REG (PBC_INTMASK_SET + PBC_BASE_ADDRESS)
	#define PBC_INTMASK_CLEAR_REG (PBC_INTMASK_CLEAR + PBC_BASE_ADDRESS)
	#define EXPIO_PARENT_INT IOMUX_TO_IRQ(MX31_PIN_GPIO1_4)

	#define MXC_IRQ_TO_EXPIO(irq) ((irq) - MXC_EXP_IO_BASE)

	#define EXPIO_INT_XUART_INTA (MXC_EXP_IO_BASE + 10)
	#define EXPIO_INT_XUART_INTB (MXC_EXP_IO_BASE + 11)

	#define MXC_MAX_EXP_IO_LINES 16

	/*
	* The serial port definition structure.
	*/
	static struct plat_serial8250_port serial_platform_data[] = {
	{
	.membase = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTA),
	.mapbase = (unsigned long)(MX31_CS4_BASE_ADDR + PBC_SC16C652_UARTA),
	.irq = EXPIO_INT_XUART_INTA,
	.uartclk = 14745600,
	.regshift = 0,
	.iotype = UPIO_MEM,
	.flags = UPF_BOOT_AUTOCONF \| UPF_SKIP_TEST \| UPF_AUTO_IRQ,
	}, {
	.membase = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTB),
	.mapbase = (unsigned long)(MX31_CS4_BASE_ADDR + PBC_SC16C652_UARTB),
	.irq = EXPIO_INT_XUART_INTB,
	.uartclk = 14745600,
	.regshift = 0,
	.iotype = UPIO_MEM,
	.flags = UPF_BOOT_AUTOCONF \| UPF_SKIP_TEST \| UPF_AUTO_IRQ,
	},
	{},
	};

	static struct platform_device serial_device = {
	.name = "serial8250",
	.id = 0,
	.dev = {
	.platform_data = serial_platform_data,
	},
	};

	static int __init mxc_init_extuart(void)
	{
	return platform_device_register(&serial_device);
	}

	static const struct imxuart_platform_data uart_pdata __initconst = {
	.flags = IMXUART_HAVE_RTSCTS,
	};

	static unsigned int uart_pins[] = {
	MX31_PIN_CTS1__CTS1,
	MX31_PIN_RTS1__RTS1,
	MX31_PIN_TXD1__TXD1,
	MX31_PIN_RXD1__RXD1
	};

	static inline void mxc_init_imx_uart(void)
	{
	mxc_iomux_setup_multiple_pins(uart_pins, ARRAY_SIZE(uart_pins), "uart-0");
	imx31_add_imx_uart0(&uart_pdata);
	}

	static void mx31ads_expio_irq_handler(u32 irq, struct irq_desc *desc)
	{
	u32 imr_val;
	u32 int_valid;
	u32 expio_irq;

	imr_val = __raw_readw(PBC_INTMASK_SET_REG);
	int_valid = __raw_readw(PBC_INTSTATUS_REG) & imr_val;

	expio_irq = MXC_EXP_IO_BASE;
	for (; int_valid != 0; int_valid >>= 1, expio_irq++) {
	if ((int_valid & 1) == 0)
	continue;

	generic_handle_irq(expio_irq);
	}
	}

	/*
	* Disable an expio pin's interrupt by setting the bit in the imr.
	* @param d an expio virtual irq description
	*/
	static void expio_mask_irq(struct irq_data *d)
	{
	u32 expio = MXC_IRQ_TO_EXPIO(d->irq);
	/* mask the interrupt */
	__raw_writew(1 << expio, PBC_INTMASK_CLEAR_REG);
	__raw_readw(PBC_INTMASK_CLEAR_REG);
	}

	/*
	* Acknowledge an expanded io pin's interrupt by clearing the bit in the isr.
	* @param d an expio virtual irq description
	*/
	static void expio_ack_irq(struct irq_data *d)
	{
	u32 expio = MXC_IRQ_TO_EXPIO(d->irq);
	/* clear the interrupt status */
	__raw_writew(1 << expio, PBC_INTSTATUS_REG);
	}

	/*
	* Enable a expio pin's interrupt by clearing the bit in the imr.
	* @param d an expio virtual irq description
	*/
	static void expio_unmask_irq(struct irq_data *d)
	{
	u32 expio = MXC_IRQ_TO_EXPIO(d->irq);
	/* unmask the interrupt */
	__raw_writew(1 << expio, PBC_INTMASK_SET_REG);
	}

	static struct irq_chip expio_irq_chip = {
	.name = "EXPIO(CPLD)",
	.irq_ack = expio_ack_irq,
	.irq_mask = expio_mask_irq,
	.irq_unmask = expio_unmask_irq,
	};

	static void __init mx31ads_init_expio(void)
	{
	int i;

	printk(KERN_INFO "MX31ADS EXPIO(CPLD) hardware\n");

	/*
	* Configure INT line as GPIO input
	*/
	mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_GPIO1_4, IOMUX_CONFIG_GPIO), "expio");

	/* disable the interrupt and clear the status */
	__raw_writew(0xFFFF, PBC_INTMASK_CLEAR_REG);
	__raw_writew(0xFFFF, PBC_INTSTATUS_REG);
	for (i = MXC_EXP_IO_BASE; i < (MXC_EXP_IO_BASE + MXC_MAX_EXP_IO_LINES);
	i++) {
	irq_set_chip_and_handler(i, &expio_irq_chip, handle_level_irq);
	set_irq_flags(i, IRQF_VALID);
	}
	irq_set_irq_type(EXPIO_PARENT_INT, IRQ_TYPE_LEVEL_HIGH);
	irq_set_chained_handler(EXPIO_PARENT_INT, mx31ads_expio_irq_handler);
	}

	#ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
	/* This section defines setup for the Wolfson Microelectronics
	* 1133-EV1 PMU/audio board. When other PMU boards are supported the
	* regulator definitions may be shared with them, but for now they can
	* only be used with this board so would generate warnings about
	* unused statics and some of the configuration is specific to this
	* module.
	*/

	/* CPU */
	static struct regulator_consumer_supply sw1a_consumers[] = {
	{
	.supply = "cpu_vcc",
	}
	};

	static struct regulator_init_data sw1a_data = {
	.constraints = {
	.name = "SW1A",
	.min_uV = 1275000,
	.max_uV = 1600000,
	.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE \|
	REGULATOR_CHANGE_MODE,
	.valid_modes_mask = REGULATOR_MODE_NORMAL \|
	REGULATOR_MODE_FAST,
	.state_mem = {
	.uV = 1400000,
	.mode = REGULATOR_MODE_NORMAL,
	.enabled = 1,
	},
	.initial_state = PM_SUSPEND_MEM,
	.always_on = 1,
	.boot_on = 1,
	},
	.num_consumer_supplies = ARRAY_SIZE(sw1a_consumers),
	.consumer_supplies = sw1a_consumers,
	};

	/* System IO - High */
	static struct regulator_init_data viohi_data = {
	.constraints = {
	.name = "VIOHO",
	.min_uV = 2800000,
	.max_uV = 2800000,
	.state_mem = {
	.uV = 2800000,
	.mode = REGULATOR_MODE_NORMAL,
	.enabled = 1,
	},
	.initial_state = PM_SUSPEND_MEM,
	.always_on = 1,
	.boot_on = 1,
	},
	};

	/* System IO - Low */
	static struct regulator_init_data violo_data = {
	.constraints = {
	.name = "VIOLO",
	.min_uV = 1800000,
	.max_uV = 1800000,
	.state_mem = {
	.uV = 1800000,
	.mode = REGULATOR_MODE_NORMAL,
	.enabled = 1,
	},
	.initial_state = PM_SUSPEND_MEM,
	.always_on = 1,
	.boot_on = 1,
	},
	};

	/* DDR RAM */
	static struct regulator_init_data sw2a_data = {
	.constraints = {
	.name = "SW2A",
	.min_uV = 1800000,
	.max_uV = 1800000,
	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	.state_mem = {
	.uV = 1800000,
	.mode = REGULATOR_MODE_NORMAL,
	.enabled = 1,
	},
	.state_disk = {
	.mode = REGULATOR_MODE_NORMAL,
	.enabled = 0,
	},
	.always_on = 1,
	.boot_on = 1,
	.initial_state = PM_SUSPEND_MEM,
	},
	};

	static struct regulator_init_data ldo1_data = {
	.constraints = {
	.name = "VCAM/VMMC1/VMMC2",
	.min_uV = 2800000,
	.max_uV = 2800000,
	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	.valid_ops_mask = REGULATOR_CHANGE_STATUS,
	.apply_uV = 1,
	},
	};

	static struct regulator_consumer_supply ldo2_consumers[] = {
	{ .supply = "AVDD", .dev_name = "1-001a" },
	{ .supply = "HPVDD", .dev_name = "1-001a" },
	};

	/* CODEC and SIM */
	static struct regulator_init_data ldo2_data = {
	.constraints = {
	.name = "VESIM/VSIM/AVDD",
	.min_uV = 3300000,
	.max_uV = 3300000,
	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	.valid_ops_mask = REGULATOR_CHANGE_STATUS,
	.apply_uV = 1,
	},
	.num_consumer_supplies = ARRAY_SIZE(ldo2_consumers),
	.consumer_supplies = ldo2_consumers,
	};

	/* General */
	static struct regulator_init_data vdig_data = {
	.constraints = {
	.name = "VDIG",
	.min_uV = 1500000,
	.max_uV = 1500000,
	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	.apply_uV = 1,
	.always_on = 1,
	.boot_on = 1,
	},
	};

	/* Tranceivers */
	static struct regulator_init_data ldo4_data = {
	.constraints = {
	.name = "VRF1/CVDD_2.775",
	.min_uV = 2500000,
	.max_uV = 2500000,
	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	.apply_uV = 1,
	.always_on = 1,
	.boot_on = 1,
	},
	};

	static struct wm8350_led_platform_data wm8350_led_data = {
	.name = "wm8350:white",
	.default_trigger = "heartbeat",
	.max_uA = 27899,
	};

	static struct wm8350_audio_platform_data imx32ads_wm8350_setup = {
	.vmid_discharge_msecs = 1000,
	.drain_msecs = 30,
	.cap_discharge_msecs = 700,
	.vmid_charge_msecs = 700,
	.vmid_s_curve = WM8350_S_CURVE_SLOW,
	.dis_out4 = WM8350_DISCHARGE_SLOW,
	.dis_out3 = WM8350_DISCHARGE_SLOW,
	.dis_out2 = WM8350_DISCHARGE_SLOW,
	.dis_out1 = WM8350_DISCHARGE_SLOW,
	.vroi_out4 = WM8350_TIE_OFF_500R,
	.vroi_out3 = WM8350_TIE_OFF_500R,
	.vroi_out2 = WM8350_TIE_OFF_500R,
	.vroi_out1 = WM8350_TIE_OFF_500R,
	.vroi_enable = 0,
	.codec_current_on = WM8350_CODEC_ISEL_1_0,
	.codec_current_standby = WM8350_CODEC_ISEL_0_5,
	.codec_current_charge = WM8350_CODEC_ISEL_1_5,
	};

	static int mx31_wm8350_init(struct wm8350 *wm8350)
	{
	wm8350_gpio_config(wm8350, 0, WM8350_GPIO_DIR_IN,
	WM8350_GPIO0_PWR_ON_IN, WM8350_GPIO_ACTIVE_LOW,
	WM8350_GPIO_PULL_UP, WM8350_GPIO_INVERT_OFF,
	WM8350_GPIO_DEBOUNCE_ON);

	wm8350_gpio_config(wm8350, 3, WM8350_GPIO_DIR_IN,
	WM8350_GPIO3_PWR_OFF_IN, WM8350_GPIO_ACTIVE_HIGH,
	WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
	WM8350_GPIO_DEBOUNCE_ON);

	wm8350_gpio_config(wm8350, 4, WM8350_GPIO_DIR_IN,
	WM8350_GPIO4_MR_IN, WM8350_GPIO_ACTIVE_HIGH,
	WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
	WM8350_GPIO_DEBOUNCE_OFF);

	wm8350_gpio_config(wm8350, 7, WM8350_GPIO_DIR_IN,
	WM8350_GPIO7_HIBERNATE_IN, WM8350_GPIO_ACTIVE_HIGH,
	WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
	WM8350_GPIO_DEBOUNCE_OFF);

	wm8350_gpio_config(wm8350, 6, WM8350_GPIO_DIR_OUT,
	WM8350_GPIO6_SDOUT_OUT, WM8350_GPIO_ACTIVE_HIGH,
	WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
	WM8350_GPIO_DEBOUNCE_OFF);

	wm8350_gpio_config(wm8350, 8, WM8350_GPIO_DIR_OUT,
	WM8350_GPIO8_VCC_FAULT_OUT, WM8350_GPIO_ACTIVE_LOW,
	WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
	WM8350_GPIO_DEBOUNCE_OFF);

	wm8350_gpio_config(wm8350, 9, WM8350_GPIO_DIR_OUT,
	WM8350_GPIO9_BATT_FAULT_OUT, WM8350_GPIO_ACTIVE_LOW,
	WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
	WM8350_GPIO_DEBOUNCE_OFF);

	wm8350_register_regulator(wm8350, WM8350_DCDC_1, &sw1a_data);
	wm8350_register_regulator(wm8350, WM8350_DCDC_3, &viohi_data);
	wm8350_register_regulator(wm8350, WM8350_DCDC_4, &violo_data);
	wm8350_register_regulator(wm8350, WM8350_DCDC_6, &sw2a_data);
	wm8350_register_regulator(wm8350, WM8350_LDO_1, &ldo1_data);
	wm8350_register_regulator(wm8350, WM8350_LDO_2, &ldo2_data);
	wm8350_register_regulator(wm8350, WM8350_LDO_3, &vdig_data);
	wm8350_register_regulator(wm8350, WM8350_LDO_4, &ldo4_data);

	/* LEDs */
	wm8350_dcdc_set_slot(wm8350, WM8350_DCDC_5, 1, 1,
	WM8350_DC5_ERRACT_SHUTDOWN_CONV);
	wm8350_isink_set_flash(wm8350, WM8350_ISINK_A,
	WM8350_ISINK_FLASH_DISABLE,
	WM8350_ISINK_FLASH_TRIG_BIT,
	WM8350_ISINK_FLASH_DUR_32MS,
	WM8350_ISINK_FLASH_ON_INSTANT,
	WM8350_ISINK_FLASH_OFF_INSTANT,
	WM8350_ISINK_FLASH_MODE_EN);
	wm8350_dcdc25_set_mode(wm8350, WM8350_DCDC_5,
	WM8350_ISINK_MODE_BOOST,
	WM8350_ISINK_ILIM_NORMAL,
	WM8350_DC5_RMP_20V,
	WM8350_DC5_FBSRC_ISINKA);
	wm8350_register_led(wm8350, 0, WM8350_DCDC_5, WM8350_ISINK_A,
	&wm8350_led_data);

	wm8350->codec.platform_data = &imx32ads_wm8350_setup;

	regulator_has_full_constraints();

	return 0;
	}

	static struct wm8350_platform_data __initdata mx31_wm8350_pdata = {
	.init = mx31_wm8350_init,
	.irq_base = MXC_BOARD_IRQ_START + MXC_MAX_EXP_IO_LINES,
	};
	#endif

	static struct i2c_board_info __initdata mx31ads_i2c1_devices[] = {
	#ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
	{
	I2C_BOARD_INFO("wm8350", 0x1a),
	.platform_data = &mx31_wm8350_pdata,
	.irq = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
	},
	#endif
	};

	static void __init mxc_init_i2c(void)
	{
	i2c_register_board_info(1, mx31ads_i2c1_devices,
	ARRAY_SIZE(mx31ads_i2c1_devices));

	mxc_iomux_mode(IOMUX_MODE(MX31_PIN_CSPI2_MOSI, IOMUX_CONFIG_ALT1));
	mxc_iomux_mode(IOMUX_MODE(MX31_PIN_CSPI2_MISO, IOMUX_CONFIG_ALT1));

	imx31_add_imx_i2c1(NULL);
	}

	static unsigned int ssi_pins[] = {
	MX31_PIN_SFS5__SFS5,
	MX31_PIN_SCK5__SCK5,
	MX31_PIN_SRXD5__SRXD5,
	MX31_PIN_STXD5__STXD5,
	};

	static void __init mxc_init_audio(void)
	{
	imx31_add_imx_ssi(0, NULL);
	mxc_iomux_setup_multiple_pins(ssi_pins, ARRAY_SIZE(ssi_pins), "ssi");
	}

	/* static mappings */
	static struct map_desc mx31ads_io_desc[] __initdata = {
	{
	.virtual = MX31_CS4_BASE_ADDR_VIRT,
	.pfn = __phys_to_pfn(MX31_CS4_BASE_ADDR),
	.length = MX31_CS4_SIZE / 2,
	.type = MT_DEVICE
	},
	};

	static void __init mx31ads_map_io(void)
	{
	mx31_map_io();
	iotable_init(mx31ads_io_desc, ARRAY_SIZE(mx31ads_io_desc));
	}

	static void __init mx31ads_init_irq(void)
	{
	mx31_init_irq();
	mx31ads_init_expio();
	}

	static void __init mx31ads_init(void)
	{
	imx31_soc_init();

	mxc_init_extuart();
	mxc_init_imx_uart();
	mxc_init_i2c();
	mxc_init_audio();
	}

	static void __init mx31ads_timer_init(void)
	{
	mx31_clocks_init(26000000);
	}

	static struct sys_timer mx31ads_timer = {
	.init = mx31ads_timer_init,
	};

	MACHINE_START(MX31ADS, "Freescale MX31ADS")
	/* Maintainer: Freescale Semiconductor, Inc. */
	.boot_params = MX3x_PHYS_OFFSET + 0x100,
	.map_io = mx31ads_map_io,
	.init_early = imx31_init_early,
	.init_irq = mx31ads_init_irq,
	.handle_irq = imx31_handle_irq,
	.timer = &mx31ads_timer,
	.init_machine = mx31ads_init,
	MACHINE_END