arch/arm/mach-omap1/board-nokia770.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * linux/arch/arm/mach-omap1/board-nokia770.c
  *
  * Modified from board-generic.c
  */
 #include <linux/clkdev.h>
 #include <linux/irq.h>
 #include <linux/gpio/consumer.h>
 #include <linux/gpio/machine.h>
 #include <linux/gpio/property.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/mutex.h>
 #include <linux/platform_device.h>
 #include <linux/property.h>
 #include <linux/input.h>
 #include <linux/omapfb.h>

 #include <linux/spi/spi.h>
 #include <linux/workqueue.h>
 #include <linux/delay.h>

 #include <linux/platform_data/keypad-omap.h>
 #include <linux/platform_data/lcd-mipid.h>
 #include <linux/platform_data/gpio-omap.h>

 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>

 #include "mux.h"
 #include "hardware.h"
 #include "usb.h"
 #include "common.h"
 #include "clock.h"
 #include "mmc.h"

 static const struct software_node nokia770_mpuio_gpiochip_node = {
 	.name = "mpuio",
 };

 static const struct software_node nokia770_gpiochip1_node = {
 	.name = "gpio-0-15",
 };

 static const struct software_node nokia770_gpiochip2_node = {
 	.name = "gpio-16-31",
 };

 static const struct software_node *nokia770_gpiochip_nodes[] = {
 	&nokia770_mpuio_gpiochip_node,
 	&nokia770_gpiochip1_node,
 	&nokia770_gpiochip2_node,
 	NULL
 };

 #define ADS7846_PENDOWN_GPIO	15

 static const unsigned int nokia770_keymap[] = {
 	KEY(1, 0, GROUP_0 | KEY_UP),
 	KEY(2, 0, GROUP_1 | KEY_F5),
 	KEY(0, 1, GROUP_0 | KEY_LEFT),
 	KEY(1, 1, GROUP_0 | KEY_ENTER),
 	KEY(2, 1, GROUP_0 | KEY_RIGHT),
 	KEY(0, 2, GROUP_1 | KEY_ESC),
 	KEY(1, 2, GROUP_0 | KEY_DOWN),
 	KEY(2, 2, GROUP_1 | KEY_F4),
 	KEY(0, 3, GROUP_2 | KEY_F7),
 	KEY(1, 3, GROUP_2 | KEY_F8),
 	KEY(2, 3, GROUP_2 | KEY_F6),
 };

 static struct resource nokia770_kp_resources[] = {
 	[0] = {
 		.start	= INT_KEYBOARD,
 		.end	= INT_KEYBOARD,
 		.flags	= IORESOURCE_IRQ,
 	},
 };

 static const struct matrix_keymap_data nokia770_keymap_data = {
 	.keymap		= nokia770_keymap,
 	.keymap_size	= ARRAY_SIZE(nokia770_keymap),
 };

 static struct omap_kp_platform_data nokia770_kp_data = {
 	.rows		= 8,
 	.cols		= 8,
 	.keymap_data	= &nokia770_keymap_data,
 	.delay		= 4,
 };

 static struct platform_device nokia770_kp_device = {
 	.name		= "omap-keypad",
 	.id		= -1,
 	.dev		= {
 		.platform_data = &nokia770_kp_data,
 	},
 	.num_resources	= ARRAY_SIZE(nokia770_kp_resources),
 	.resource	= nokia770_kp_resources,
 };

 static struct platform_device *nokia770_devices[] __initdata = {
 	&nokia770_kp_device,
 };

 static struct mipid_platform_data nokia770_mipid_platform_data = { };

 static const struct omap_lcd_config nokia770_lcd_config __initconst = {
 	.ctrl_name	= "hwa742",
 };

 static const struct property_entry nokia770_mipid_props[] = {
 	PROPERTY_ENTRY_GPIO("reset-gpios", &nokia770_gpiochip1_node,
 			    13, GPIO_ACTIVE_LOW),
 	{ }
 };

 static const struct software_node nokia770_mipid_swnode = {
 	.name = "lcd_mipid",
 	.properties = nokia770_mipid_props,
 };

 static void __init mipid_dev_init(void)
 {
 	nokia770_mipid_platform_data.data_lines = 16;

 	omapfb_set_lcd_config(&nokia770_lcd_config);
 }

 static const struct property_entry nokia770_ads7846_props[] = {
 	PROPERTY_ENTRY_STRING("compatible", "ti,ads7846"),
 	PROPERTY_ENTRY_U32("touchscreen-size-x", 4096),
 	PROPERTY_ENTRY_U32("touchscreen-size-y", 4096),
 	PROPERTY_ENTRY_U32("touchscreen-max-pressure", 256),
 	PROPERTY_ENTRY_U32("touchscreen-average-samples", 10),
 	PROPERTY_ENTRY_U16("ti,x-plate-ohms", 180),
 	PROPERTY_ENTRY_U16("ti,debounce-tol", 3),
 	PROPERTY_ENTRY_U16("ti,debounce-rep", 1),
 	PROPERTY_ENTRY_GPIO("pendown-gpios", &nokia770_gpiochip1_node,
 			    ADS7846_PENDOWN_GPIO, GPIO_ACTIVE_LOW),
 	{ }
 };

 static const struct software_node nokia770_ads7846_swnode = {
 	.name = "ads7846",
 	.properties = nokia770_ads7846_props,
 };

 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
 	[0] = {
 		.modalias       = "lcd_mipid",
 		.bus_num        = 2,
 		.chip_select    = 3,
 		.max_speed_hz   = 12000000,
 		.platform_data	= &nokia770_mipid_platform_data,
 		.swnode         = &nokia770_mipid_swnode,
 	},
 	[1] = {
 		.modalias       = "ads7846",
 		.bus_num        = 2,
 		.chip_select    = 0,
 		.max_speed_hz   = 2500000,
 		.swnode         = &nokia770_ads7846_swnode,
 	},
 };

 static void __init hwa742_dev_init(void)
 {
 	clk_add_alias("hwa_sys_ck", NULL, "bclk", NULL);
 }

 /* assume no Mini-AB port */

 static struct omap_usb_config nokia770_usb_config __initdata = {
 	.otg		= 1,
 	.register_host	= 1,
 	.register_dev	= 1,
 	.hmc_mode	= 16,
 	.pins[0]	= 6,
 	.extcon		= "tahvo-usb",
 };

 #if IS_ENABLED(CONFIG_MMC_OMAP)

 static struct gpiod_lookup_table nokia770_mmc_gpio_table = {
 	.dev_id = "mmci-omap.1",
 	.table = {
 		/* Slot index 0, VSD power, GPIO 41 */
 		GPIO_LOOKUP_IDX("gpio-32-47", 9,
 				"vsd", 0, GPIO_ACTIVE_HIGH),
 		/* Slot index 0, switch, GPIO 23 */
 		GPIO_LOOKUP_IDX("gpio-16-31", 7,
 				"cover", 0, GPIO_ACTIVE_HIGH),
 		{ }
 	},
 };

 static struct omap_mmc_platform_data nokia770_mmc2_data = {
 	.nr_slots                       = 1,
 	.max_freq                       = 12000000,
 	.slots[0]       = {
 		.ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 		.name                   = "mmcblk",
 	},
 };

 static struct omap_mmc_platform_data *nokia770_mmc_data[OMAP16XX_NR_MMC];

 static void __init nokia770_mmc_init(void)
 {
 	gpiod_add_lookup_table(&nokia770_mmc_gpio_table);
 	/* Only the second MMC controller is used */
 	nokia770_mmc_data[1] = &nokia770_mmc2_data;
 	omap1_init_mmc(nokia770_mmc_data, OMAP16XX_NR_MMC);
 }

 #else
 static inline void nokia770_mmc_init(void)
 {
 }
 #endif

 #if IS_ENABLED(CONFIG_I2C_CBUS_GPIO)

 static const struct software_node_ref_args nokia770_cbus_gpio_refs[] = {
 	SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_node, 9, 0),
 	SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_node, 10, 0),
 	SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_node, 11, 0),
 };

 static const struct property_entry nokia770_cbus_props[] = {
 	PROPERTY_ENTRY_REF_ARRAY("gpios", nokia770_cbus_gpio_refs),
 	{ }
 };

 static struct platform_device nokia770_cbus_device = {
 	.name   = "i2c-cbus-gpio",
 	.id     = 2,
 };

 static struct i2c_board_info nokia770_i2c_board_info_2[] __initdata = {
 	{
 		I2C_BOARD_INFO("retu", 0x01),
 	},
 	{
 		I2C_BOARD_INFO("tahvo", 0x02),
 	},
 };

 static void __init nokia770_cbus_init(void)
 {
 	struct gpio_desc *d;
 	int irq;

 	d = gpiod_get(NULL, "retu_irq", GPIOD_IN);
 	if (IS_ERR(d)) {
 		pr_err("Unable to get CBUS Retu IRQ GPIO descriptor\n");
 	} else {
 		irq = gpiod_to_irq(d);
 		irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
 		nokia770_i2c_board_info_2[0].irq = irq;
 	}
 	d = gpiod_get(NULL, "tahvo_irq", GPIOD_IN);
 	if (IS_ERR(d)) {
 		pr_err("Unable to get CBUS Tahvo IRQ GPIO descriptor\n");
 	} else {
 		irq = gpiod_to_irq(d);
 		irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
 		nokia770_i2c_board_info_2[1].irq = irq;
 	}
 	i2c_register_board_info(2, nokia770_i2c_board_info_2,
 				ARRAY_SIZE(nokia770_i2c_board_info_2));
 	device_create_managed_software_node(&nokia770_cbus_device.dev,
 					    nokia770_cbus_props, NULL);
 	platform_device_register(&nokia770_cbus_device);
 }
 #else /* CONFIG_I2C_CBUS_GPIO */
 static void __init nokia770_cbus_init(void)
 {
 }
 #endif /* CONFIG_I2C_CBUS_GPIO */

 static struct gpiod_lookup_table nokia770_irq_gpio_table = {
 	.dev_id = NULL,
 	.table = {
 		/* GPIO used by SPI device 1 */
 		GPIO_LOOKUP("gpio-0-15", 15, "ads7846_irq",
 			    GPIO_ACTIVE_HIGH),
 		/* GPIO used for retu IRQ */
 		GPIO_LOOKUP("gpio-48-63", 15, "retu_irq",
 			    GPIO_ACTIVE_HIGH),
 		/* GPIO used for tahvo IRQ */
 		GPIO_LOOKUP("gpio-32-47", 8, "tahvo_irq",
 			    GPIO_ACTIVE_HIGH),
 		/* GPIOs used by serial wakeup IRQs */
 		GPIO_LOOKUP_IDX("gpio-32-47", 5, "wakeup", 0,
 			    GPIO_ACTIVE_HIGH),
 		GPIO_LOOKUP_IDX("gpio-16-31", 2, "wakeup", 1,
 			    GPIO_ACTIVE_HIGH),
 		GPIO_LOOKUP_IDX("gpio-48-63", 1, "wakeup", 2,
 			    GPIO_ACTIVE_HIGH),
 		{ }
 	},
 };

 static void __init omap_nokia770_init(void)
 {
 	struct gpio_desc *d;

 	/* On Nokia 770, the SleepX signal is masked with an
 	 * MPUIO line by default.  It has to be unmasked for it
 	 * to become functional */

 	/* SleepX mask direction */
 	omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
 	/* Unmask SleepX signal */
 	omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);

 	software_node_register_node_group(nokia770_gpiochip_nodes);
 	platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));

 	gpiod_add_lookup_table(&nokia770_irq_gpio_table);
 	d = gpiod_get(NULL, "ads7846_irq", GPIOD_IN);
 	if (IS_ERR(d))
 		pr_err("Unable to get ADS7846 IRQ GPIO descriptor\n");
 	else
 		nokia770_spi_board_info[1].irq = gpiod_to_irq(d);

 	spi_register_board_info(nokia770_spi_board_info,
 				ARRAY_SIZE(nokia770_spi_board_info));
 	omap_serial_init();
 	omap_register_i2c_bus(1, 100, NULL, 0);
 	hwa742_dev_init();
 	mipid_dev_init();
 	omap1_usb_init(&nokia770_usb_config);
 	nokia770_mmc_init();
 	nokia770_cbus_init();
 }

 MACHINE_START(NOKIA770, "Nokia 770")
 	.atag_offset	= 0x100,
 	.map_io		= omap1_map_io,
 	.init_early     = omap1_init_early,
 	.init_irq	= omap1_init_irq,
 	.init_machine	= omap_nokia770_init,
 	.init_late	= omap1_init_late,
 	.init_time	= omap1_timer_init,
 	.restart	= omap1_restart,
 MACHINE_END
	// SPDX-License-Identifier: GPL-2.0-only
	/*
	* linux/arch/arm/mach-omap1/board-nokia770.c
	*
	* Modified from board-generic.c
	*/
	#include <linux/clkdev.h>
	#include <linux/irq.h>
	#include <linux/gpio/consumer.h>
	#include <linux/gpio/machine.h>
	#include <linux/gpio/property.h>
	#include <linux/kernel.h>
	#include <linux/init.h>
	#include <linux/mutex.h>
	#include <linux/platform_device.h>
	#include <linux/property.h>
	#include <linux/input.h>
	#include <linux/omapfb.h>

	#include <linux/spi/spi.h>
	#include <linux/workqueue.h>
	#include <linux/delay.h>

	#include <linux/platform_data/keypad-omap.h>
	#include <linux/platform_data/lcd-mipid.h>
	#include <linux/platform_data/gpio-omap.h>

	#include <asm/mach-types.h>
	#include <asm/mach/arch.h>
	#include <asm/mach/map.h>

	#include "mux.h"
	#include "hardware.h"
	#include "usb.h"
	#include "common.h"
	#include "clock.h"
	#include "mmc.h"

	static const struct software_node nokia770_mpuio_gpiochip_node = {
	.name = "mpuio",
	};

	static const struct software_node nokia770_gpiochip1_node = {
	.name = "gpio-0-15",
	};

	static const struct software_node nokia770_gpiochip2_node = {
	.name = "gpio-16-31",
	};

	static const struct software_node *nokia770_gpiochip_nodes[] = {
	&nokia770_mpuio_gpiochip_node,
	&nokia770_gpiochip1_node,
	&nokia770_gpiochip2_node,
	NULL
	};

	#define ADS7846_PENDOWN_GPIO 15

	static const unsigned int nokia770_keymap[] = {
	KEY(1, 0, GROUP_0 \| KEY_UP),
	KEY(2, 0, GROUP_1 \| KEY_F5),
	KEY(0, 1, GROUP_0 \| KEY_LEFT),
	KEY(1, 1, GROUP_0 \| KEY_ENTER),
	KEY(2, 1, GROUP_0 \| KEY_RIGHT),
	KEY(0, 2, GROUP_1 \| KEY_ESC),
	KEY(1, 2, GROUP_0 \| KEY_DOWN),
	KEY(2, 2, GROUP_1 \| KEY_F4),
	KEY(0, 3, GROUP_2 \| KEY_F7),
	KEY(1, 3, GROUP_2 \| KEY_F8),
	KEY(2, 3, GROUP_2 \| KEY_F6),
	};

	static struct resource nokia770_kp_resources[] = {
	[0] = {
	.start = INT_KEYBOARD,
	.end = INT_KEYBOARD,
	.flags = IORESOURCE_IRQ,
	},
	};

	static const struct matrix_keymap_data nokia770_keymap_data = {
	.keymap = nokia770_keymap,
	.keymap_size = ARRAY_SIZE(nokia770_keymap),
	};

	static struct omap_kp_platform_data nokia770_kp_data = {
	.rows = 8,
	.cols = 8,
	.keymap_data = &nokia770_keymap_data,
	.delay = 4,
	};

	static struct platform_device nokia770_kp_device = {
	.name = "omap-keypad",
	.id = -1,
	.dev = {
	.platform_data = &nokia770_kp_data,
	},
	.num_resources = ARRAY_SIZE(nokia770_kp_resources),
	.resource = nokia770_kp_resources,
	};

	static struct platform_device *nokia770_devices[] __initdata = {
	&nokia770_kp_device,
	};

	static struct mipid_platform_data nokia770_mipid_platform_data = { };

	static const struct omap_lcd_config nokia770_lcd_config __initconst = {
	.ctrl_name = "hwa742",
	};

	static const struct property_entry nokia770_mipid_props[] = {
	PROPERTY_ENTRY_GPIO("reset-gpios", &nokia770_gpiochip1_node,
	13, GPIO_ACTIVE_LOW),
	{ }
	};

	static const struct software_node nokia770_mipid_swnode = {
	.name = "lcd_mipid",
	.properties = nokia770_mipid_props,
	};

	static void __init mipid_dev_init(void)
	{
	nokia770_mipid_platform_data.data_lines = 16;

	omapfb_set_lcd_config(&nokia770_lcd_config);
	}

	static const struct property_entry nokia770_ads7846_props[] = {
	PROPERTY_ENTRY_STRING("compatible", "ti,ads7846"),
	PROPERTY_ENTRY_U32("touchscreen-size-x", 4096),
	PROPERTY_ENTRY_U32("touchscreen-size-y", 4096),
	PROPERTY_ENTRY_U32("touchscreen-max-pressure", 256),
	PROPERTY_ENTRY_U32("touchscreen-average-samples", 10),
	PROPERTY_ENTRY_U16("ti,x-plate-ohms", 180),
	PROPERTY_ENTRY_U16("ti,debounce-tol", 3),
	PROPERTY_ENTRY_U16("ti,debounce-rep", 1),
	PROPERTY_ENTRY_GPIO("pendown-gpios", &nokia770_gpiochip1_node,
	ADS7846_PENDOWN_GPIO, GPIO_ACTIVE_LOW),
	{ }
	};

	static const struct software_node nokia770_ads7846_swnode = {
	.name = "ads7846",
	.properties = nokia770_ads7846_props,
	};

	static struct spi_board_info nokia770_spi_board_info[] __initdata = {
	[0] = {
	.modalias = "lcd_mipid",
	.bus_num = 2,
	.chip_select = 3,
	.max_speed_hz = 12000000,
	.platform_data = &nokia770_mipid_platform_data,
	.swnode = &nokia770_mipid_swnode,
	},
	[1] = {
	.modalias = "ads7846",
	.bus_num = 2,
	.chip_select = 0,
	.max_speed_hz = 2500000,
	.swnode = &nokia770_ads7846_swnode,
	},
	};

	static void __init hwa742_dev_init(void)
	{
	clk_add_alias("hwa_sys_ck", NULL, "bclk", NULL);
	}

	/* assume no Mini-AB port */

	static struct omap_usb_config nokia770_usb_config __initdata = {
	.otg = 1,
	.register_host = 1,
	.register_dev = 1,
	.hmc_mode = 16,
	.pins[0] = 6,
	.extcon = "tahvo-usb",
	};

	#if IS_ENABLED(CONFIG_MMC_OMAP)

	static struct gpiod_lookup_table nokia770_mmc_gpio_table = {
	.dev_id = "mmci-omap.1",
	.table = {
	/* Slot index 0, VSD power, GPIO 41 */
	GPIO_LOOKUP_IDX("gpio-32-47", 9,
	"vsd", 0, GPIO_ACTIVE_HIGH),
	/* Slot index 0, switch, GPIO 23 */
	GPIO_LOOKUP_IDX("gpio-16-31", 7,
	"cover", 0, GPIO_ACTIVE_HIGH),
	{ }
	},
	};

	static struct omap_mmc_platform_data nokia770_mmc2_data = {
	.nr_slots = 1,
	.max_freq = 12000000,
	.slots[0] = {
	.ocr_mask = MMC_VDD_32_33\|MMC_VDD_33_34,
	.name = "mmcblk",
	},
	};

	static struct omap_mmc_platform_data *nokia770_mmc_data[OMAP16XX_NR_MMC];

	static void __init nokia770_mmc_init(void)
	{
	gpiod_add_lookup_table(&nokia770_mmc_gpio_table);
	/* Only the second MMC controller is used */
	nokia770_mmc_data[1] = &nokia770_mmc2_data;
	omap1_init_mmc(nokia770_mmc_data, OMAP16XX_NR_MMC);
	}

	#else
	static inline void nokia770_mmc_init(void)
	{
	}
	#endif

	#if IS_ENABLED(CONFIG_I2C_CBUS_GPIO)

	static const struct software_node_ref_args nokia770_cbus_gpio_refs[] = {
	SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_node, 9, 0),
	SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_node, 10, 0),
	SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_node, 11, 0),
	};

	static const struct property_entry nokia770_cbus_props[] = {
	PROPERTY_ENTRY_REF_ARRAY("gpios", nokia770_cbus_gpio_refs),
	{ }
	};

	static struct platform_device nokia770_cbus_device = {
	.name = "i2c-cbus-gpio",
	.id = 2,
	};

	static struct i2c_board_info nokia770_i2c_board_info_2[] __initdata = {
	{
	I2C_BOARD_INFO("retu", 0x01),
	},
	{
	I2C_BOARD_INFO("tahvo", 0x02),
	},
	};

	static void __init nokia770_cbus_init(void)
	{
	struct gpio_desc *d;
	int irq;

	d = gpiod_get(NULL, "retu_irq", GPIOD_IN);
	if (IS_ERR(d)) {
	pr_err("Unable to get CBUS Retu IRQ GPIO descriptor\n");
	} else {
	irq = gpiod_to_irq(d);
	irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
	nokia770_i2c_board_info_2[0].irq = irq;
	}
	d = gpiod_get(NULL, "tahvo_irq", GPIOD_IN);
	if (IS_ERR(d)) {
	pr_err("Unable to get CBUS Tahvo IRQ GPIO descriptor\n");
	} else {
	irq = gpiod_to_irq(d);
	irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
	nokia770_i2c_board_info_2[1].irq = irq;
	}
	i2c_register_board_info(2, nokia770_i2c_board_info_2,
	ARRAY_SIZE(nokia770_i2c_board_info_2));
	device_create_managed_software_node(&nokia770_cbus_device.dev,
	nokia770_cbus_props, NULL);
	platform_device_register(&nokia770_cbus_device);
	}
	#else /* CONFIG_I2C_CBUS_GPIO */
	static void __init nokia770_cbus_init(void)
	{
	}
	#endif /* CONFIG_I2C_CBUS_GPIO */

	static struct gpiod_lookup_table nokia770_irq_gpio_table = {
	.dev_id = NULL,
	.table = {
	/* GPIO used by SPI device 1 */
	GPIO_LOOKUP("gpio-0-15", 15, "ads7846_irq",
	GPIO_ACTIVE_HIGH),
	/* GPIO used for retu IRQ */
	GPIO_LOOKUP("gpio-48-63", 15, "retu_irq",
	GPIO_ACTIVE_HIGH),
	/* GPIO used for tahvo IRQ */
	GPIO_LOOKUP("gpio-32-47", 8, "tahvo_irq",
	GPIO_ACTIVE_HIGH),
	/* GPIOs used by serial wakeup IRQs */
	GPIO_LOOKUP_IDX("gpio-32-47", 5, "wakeup", 0,
	GPIO_ACTIVE_HIGH),
	GPIO_LOOKUP_IDX("gpio-16-31", 2, "wakeup", 1,
	GPIO_ACTIVE_HIGH),
	GPIO_LOOKUP_IDX("gpio-48-63", 1, "wakeup", 2,
	GPIO_ACTIVE_HIGH),
	{ }
	},
	};

	static void __init omap_nokia770_init(void)
	{
	struct gpio_desc *d;

	/* On Nokia 770, the SleepX signal is masked with an
	* MPUIO line by default. It has to be unmasked for it
	* to become functional */

	/* SleepX mask direction */
	omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
	/* Unmask SleepX signal */
	omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);

	software_node_register_node_group(nokia770_gpiochip_nodes);
	platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));

	gpiod_add_lookup_table(&nokia770_irq_gpio_table);
	d = gpiod_get(NULL, "ads7846_irq", GPIOD_IN);
	if (IS_ERR(d))
	pr_err("Unable to get ADS7846 IRQ GPIO descriptor\n");
	else
	nokia770_spi_board_info[1].irq = gpiod_to_irq(d);

	spi_register_board_info(nokia770_spi_board_info,
	ARRAY_SIZE(nokia770_spi_board_info));
	omap_serial_init();
	omap_register_i2c_bus(1, 100, NULL, 0);
	hwa742_dev_init();
	mipid_dev_init();
	omap1_usb_init(&nokia770_usb_config);
	nokia770_mmc_init();
	nokia770_cbus_init();
	}

	MACHINE_START(NOKIA770, "Nokia 770")
	.atag_offset = 0x100,
	.map_io = omap1_map_io,
	.init_early = omap1_init_early,
	.init_irq = omap1_init_irq,
	.init_machine = omap_nokia770_init,
	.init_late = omap1_init_late,
	.init_time = omap1_timer_init,
	.restart = omap1_restart,
	MACHINE_END