arch/arm/mach-sa1100/simpad.c - SHIFTPHONES/mainline/linux - Gitiles

 // SPDX-License-Identifier: GPL-2.0
 /*
  * linux/arch/arm/mach-sa1100/simpad.c
  */

 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/tty.h>
 #include <linux/proc_fs.h>
 #include <linux/string.h>
 #include <linux/pm.h>
 #include <linux/platform_data/sa11x0-serial.h>
 #include <linux/platform_device.h>
 #include <linux/mfd/ucb1x00.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 #include <linux/io.h>
 #include <linux/gpio/driver.h>
 #include <linux/gpio/machine.h>

 #include <mach/hardware.h>
 #include <asm/setup.h>
 #include <asm/irq.h>

 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
 #include <asm/mach/map.h>
 #include <linux/platform_data/mfd-mcp-sa11x0.h>
 #include <mach/simpad.h>
 #include <mach/irqs.h>

 #include <linux/serial_core.h>
 #include <linux/ioport.h>
 #include <linux/input.h>
 #include <linux/gpio_keys.h>
 #include <linux/leds.h>
 #include <linux/i2c-gpio.h>

 #include "generic.h"

 /*
  * CS3 support
  */

 static long cs3_shadow;
 static spinlock_t cs3_lock;
 static struct gpio_chip cs3_gpio;

 long simpad_get_cs3_ro(void)
 {
 	return readl(CS3_BASE);
 }
 EXPORT_SYMBOL(simpad_get_cs3_ro);

 long simpad_get_cs3_shadow(void)
 {
 	return cs3_shadow;
 }
 EXPORT_SYMBOL(simpad_get_cs3_shadow);

 static void __simpad_write_cs3(void)
 {
 	writel(cs3_shadow, CS3_BASE);
 }

 void simpad_set_cs3_bit(int value)
 {
 	unsigned long flags;

 	spin_lock_irqsave(&cs3_lock, flags);
 	cs3_shadow |= value;
 	__simpad_write_cs3();
 	spin_unlock_irqrestore(&cs3_lock, flags);
 }
 EXPORT_SYMBOL(simpad_set_cs3_bit);

 void simpad_clear_cs3_bit(int value)
 {
 	unsigned long flags;

 	spin_lock_irqsave(&cs3_lock, flags);
 	cs3_shadow &= ~value;
 	__simpad_write_cs3();
 	spin_unlock_irqrestore(&cs3_lock, flags);
 }
 EXPORT_SYMBOL(simpad_clear_cs3_bit);

 static void cs3_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
 {
 	if (offset > 15)
 		return;
 	if (value)
 		simpad_set_cs3_bit(1 << offset);
 	else
 		simpad_clear_cs3_bit(1 << offset);
 };

 static int cs3_gpio_get(struct gpio_chip *chip, unsigned offset)
 {
 	if (offset > 15)
 		return !!(simpad_get_cs3_ro() & (1 << (offset - 16)));
 	return !!(simpad_get_cs3_shadow() & (1 << offset));
 };

 static int cs3_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 {
 	if (offset > 15)
 		return 0;
 	return -EINVAL;
 };

 static int cs3_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
 	int value)
 {
 	if (offset > 15)
 		return -EINVAL;
 	cs3_gpio_set(chip, offset, value);
 	return 0;
 };

 static struct map_desc simpad_io_desc[] __initdata = {
 	{	/* MQ200 */
 		.virtual	=  0xf2800000,
 		.pfn		= __phys_to_pfn(0x4b800000),
 		.length		= 0x00800000,
 		.type		= MT_DEVICE
 	}, {	/* Simpad CS3 */
 		.virtual	= (unsigned long)CS3_BASE,
 		.pfn		= __phys_to_pfn(SA1100_CS3_PHYS),
 		.length		= 0x00100000,
 		.type		= MT_DEVICE
 	},
 };


 static void simpad_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
 {
 	if (port->mapbase == (u_int)&Ser1UTCR0) {
 		if (state)
 		{
 			simpad_clear_cs3_bit(RS232_ON);
 			simpad_clear_cs3_bit(DECT_POWER_ON);
 		}else
 		{
 			simpad_set_cs3_bit(RS232_ON);
 			simpad_set_cs3_bit(DECT_POWER_ON);
 		}
 	}
 }

 static struct sa1100_port_fns simpad_port_fns __initdata = {
 	.pm	   = simpad_uart_pm,
 };


 static struct mtd_partition simpad_partitions[] = {
 	{
 		.name       = "SIMpad boot firmware",
 		.size       = 0x00080000,
 		.offset     = 0,
 		.mask_flags = MTD_WRITEABLE,
 	}, {
 		.name       = "SIMpad kernel",
 		.size       = 0x0010000,
 		.offset     = MTDPART_OFS_APPEND,
 	}, {
 		.name       = "SIMpad root jffs2",
 		.size       = MTDPART_SIZ_FULL,
 		.offset     = MTDPART_OFS_APPEND,
 	}
 };

 static struct flash_platform_data simpad_flash_data = {
 	.map_name    = "cfi_probe",
 	.parts       = simpad_partitions,
 	.nr_parts    = ARRAY_SIZE(simpad_partitions),
 };


 static struct resource simpad_flash_resources [] = {
 	DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_16M),
 	DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_16M),
 };

 static struct ucb1x00_plat_data simpad_ucb1x00_data = {
 	.gpio_base	= SIMPAD_UCB1X00_GPIO_BASE,
 };

 static struct mcp_plat_data simpad_mcp_data = {
 	.mccr0		= MCCR0_ADM,
 	.sclk_rate	= 11981000,
 	.codec_pdata	= &simpad_ucb1x00_data,
 };


 static void __init simpad_map_io(void)
 {
 	sa1100_map_io();

 	iotable_init(simpad_io_desc, ARRAY_SIZE(simpad_io_desc));

 	/* Initialize CS3 */
 	cs3_shadow = (EN1 | EN0 | LED2_ON | DISPLAY_ON |
 		RS232_ON | ENABLE_5V | RESET_SIMCARD | DECT_POWER_ON);
 	__simpad_write_cs3(); /* Spinlocks not yet initialized */

         sa1100_register_uart_fns(&simpad_port_fns);
 	sa1100_register_uart(0, 3);  /* serial interface */
 	sa1100_register_uart(1, 1);  /* DECT             */

 	// Reassign UART 1 pins
 	GAFR |= GPIO_UART_TXD | GPIO_UART_RXD;
 	GPDR |= GPIO_UART_TXD | GPIO_LDD13 | GPIO_LDD15;
 	GPDR &= ~GPIO_UART_RXD;
 	PPAR |= PPAR_UPR;

 	/*
 	 * Set up registers for sleep mode.
 	 */


 	PWER = PWER_GPIO0| PWER_RTC;
 	PGSR = 0x818;
 	PCFR = 0;
 	PSDR = 0;

 }

 static void simpad_power_off(void)
 {
 	local_irq_disable();
 	cs3_shadow = SD_MEDIAQ;
 	__simpad_write_cs3(); /* Bypass spinlock here */

 	/* disable internal oscillator, float CS lines */
 	PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS);
 	/* enable wake-up on GPIO0 */
 	PWER = GFER = GRER = PWER_GPIO0;
 	/*
 	 * set scratchpad to zero, just in case it is used as a
 	 * restart address by the bootloader.
 	 */
 	PSPR = 0;
 	PGSR = 0;
 	/* enter sleep mode */
 	PMCR = PMCR_SF;
 	while(1);

 	local_irq_enable(); /* we won't ever call it */


 }

 /*
  * gpio_keys
 */

 static struct gpio_keys_button simpad_button_table[] = {
 	{ KEY_POWER, IRQ_GPIO_POWER_BUTTON, 1, "power button" },
 };

 static struct gpio_keys_platform_data simpad_keys_data = {
 	.buttons = simpad_button_table,
 	.nbuttons = ARRAY_SIZE(simpad_button_table),
 };

 static struct platform_device simpad_keys = {
 	.name = "gpio-keys",
 	.dev = {
 		.platform_data = &simpad_keys_data,
 	},
 };

 static struct gpio_keys_button simpad_polled_button_table[] = {
 	{ KEY_PROG1, SIMPAD_UCB1X00_GPIO_PROG1, 1, "prog1 button" },
 	{ KEY_PROG2, SIMPAD_UCB1X00_GPIO_PROG2, 1, "prog2 button" },
 	{ KEY_UP,    SIMPAD_UCB1X00_GPIO_UP,    1, "up button" },
 	{ KEY_DOWN,  SIMPAD_UCB1X00_GPIO_DOWN,  1, "down button" },
 	{ KEY_LEFT,  SIMPAD_UCB1X00_GPIO_LEFT,  1, "left button" },
 	{ KEY_RIGHT, SIMPAD_UCB1X00_GPIO_RIGHT, 1, "right button" },
 };

 static struct gpio_keys_platform_data simpad_polled_keys_data = {
 	.buttons = simpad_polled_button_table,
 	.nbuttons = ARRAY_SIZE(simpad_polled_button_table),
 	.poll_interval = 50,
 };

 static struct platform_device simpad_polled_keys = {
 	.name = "gpio-keys-polled",
 	.dev = {
 		.platform_data = &simpad_polled_keys_data,
 	},
 };

 /*
  * GPIO LEDs
  */

 static struct gpio_led simpad_leds[] = {
 	{
 		.name = "simpad:power",
 		.gpio = SIMPAD_CS3_LED2_ON,
 		.active_low = 0,
 		.default_trigger = "default-on",
 	},
 };

 static struct gpio_led_platform_data simpad_led_data = {
 	.num_leds = ARRAY_SIZE(simpad_leds),
 	.leds = simpad_leds,
 };

 static struct platform_device simpad_gpio_leds = {
 	.name = "leds-gpio",
 	.id = 0,
 	.dev = {
 		.platform_data = &simpad_led_data,
 	},
 };

 /*
  * i2c
  */
 static struct gpiod_lookup_table simpad_i2c_gpiod_table = {
 	.dev_id = "i2c-gpio",
 	.table = {
 		GPIO_LOOKUP_IDX("gpio", 21, NULL, 0,
 				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 		GPIO_LOOKUP_IDX("gpio", 25, NULL, 1,
 				GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
 	},
 };

 static struct i2c_gpio_platform_data simpad_i2c_data = {
 	.udelay = 10,
 	.timeout = HZ,
 };

 static struct platform_device simpad_i2c = {
 	.name = "i2c-gpio",
 	.id = 0,
 	.dev = {
 		.platform_data = &simpad_i2c_data,
 	},
 };

 /*
  * MediaQ Video Device
  */
 static struct platform_device simpad_mq200fb = {
 	.name = "simpad-mq200",
 	.id   = 0,
 };

 static struct platform_device *devices[] __initdata = {
 	&simpad_keys,
 	&simpad_polled_keys,
 	&simpad_mq200fb,
 	&simpad_gpio_leds,
 	&simpad_i2c,
 };


 static int __init simpad_init(void)
 {
 	int ret;

 	spin_lock_init(&cs3_lock);

 	cs3_gpio.label = "simpad_cs3";
 	cs3_gpio.base = SIMPAD_CS3_GPIO_BASE;
 	cs3_gpio.ngpio = 24;
 	cs3_gpio.set = cs3_gpio_set;
 	cs3_gpio.get = cs3_gpio_get;
 	cs3_gpio.direction_input = cs3_gpio_direction_input;
 	cs3_gpio.direction_output = cs3_gpio_direction_output;
 	ret = gpiochip_add_data(&cs3_gpio, NULL);
 	if (ret)
 		printk(KERN_WARNING "simpad: Unable to register cs3 GPIO device");

 	pm_power_off = simpad_power_off;

 	sa11x0_ppc_configure_mcp();
 	sa11x0_register_mtd(&simpad_flash_data, simpad_flash_resources,
 			      ARRAY_SIZE(simpad_flash_resources));
 	sa11x0_register_mcp(&simpad_mcp_data);

 	gpiod_add_lookup_table(&simpad_i2c_gpiod_table);
 	ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 	if(ret)
 		printk(KERN_WARNING "simpad: Unable to register mq200 framebuffer device");

 	return 0;
 }

 arch_initcall(simpad_init);


 MACHINE_START(SIMPAD, "Simpad")
 	/* Maintainer: Holger Freyther */
 	.atag_offset	= 0x100,
 	.map_io		= simpad_map_io,
 	.nr_irqs	= SA1100_NR_IRQS,
 	.init_irq	= sa1100_init_irq,
 	.init_late	= sa11x0_init_late,
 	.init_time	= sa1100_timer_init,
 	.restart	= sa11x0_restart,
 MACHINE_END
	// SPDX-License-Identifier: GPL-2.0
	/*
	* linux/arch/arm/mach-sa1100/simpad.c
	*/

	#include <linux/module.h>
	#include <linux/init.h>
	#include <linux/kernel.h>
	#include <linux/tty.h>
	#include <linux/proc_fs.h>
	#include <linux/string.h>
	#include <linux/pm.h>
	#include <linux/platform_data/sa11x0-serial.h>
	#include <linux/platform_device.h>
	#include <linux/mfd/ucb1x00.h>
	#include <linux/mtd/mtd.h>
	#include <linux/mtd/partitions.h>
	#include <linux/io.h>
	#include <linux/gpio/driver.h>
	#include <linux/gpio/machine.h>

	#include <mach/hardware.h>
	#include <asm/setup.h>
	#include <asm/irq.h>

	#include <asm/mach-types.h>
	#include <asm/mach/arch.h>
	#include <asm/mach/flash.h>
	#include <asm/mach/map.h>
	#include <linux/platform_data/mfd-mcp-sa11x0.h>
	#include <mach/simpad.h>
	#include <mach/irqs.h>

	#include <linux/serial_core.h>
	#include <linux/ioport.h>
	#include <linux/input.h>
	#include <linux/gpio_keys.h>
	#include <linux/leds.h>
	#include <linux/i2c-gpio.h>

	#include "generic.h"

	/*
	* CS3 support
	*/

	static long cs3_shadow;
	static spinlock_t cs3_lock;
	static struct gpio_chip cs3_gpio;

	long simpad_get_cs3_ro(void)
	{
	return readl(CS3_BASE);
	}
	EXPORT_SYMBOL(simpad_get_cs3_ro);

	long simpad_get_cs3_shadow(void)
	{
	return cs3_shadow;
	}
	EXPORT_SYMBOL(simpad_get_cs3_shadow);

	static void __simpad_write_cs3(void)
	{
	writel(cs3_shadow, CS3_BASE);
	}

	void simpad_set_cs3_bit(int value)
	{
	unsigned long flags;

	spin_lock_irqsave(&cs3_lock, flags);
	cs3_shadow \|= value;
	__simpad_write_cs3();
	spin_unlock_irqrestore(&cs3_lock, flags);
	}
	EXPORT_SYMBOL(simpad_set_cs3_bit);

	void simpad_clear_cs3_bit(int value)
	{
	unsigned long flags;

	spin_lock_irqsave(&cs3_lock, flags);
	cs3_shadow &= ~value;
	__simpad_write_cs3();
	spin_unlock_irqrestore(&cs3_lock, flags);
	}
	EXPORT_SYMBOL(simpad_clear_cs3_bit);

	static void cs3_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
	{
	if (offset > 15)
	return;
	if (value)
	simpad_set_cs3_bit(1 << offset);
	else
	simpad_clear_cs3_bit(1 << offset);
	};

	static int cs3_gpio_get(struct gpio_chip *chip, unsigned offset)
	{
	if (offset > 15)
	return !!(simpad_get_cs3_ro() & (1 << (offset - 16)));
	return !!(simpad_get_cs3_shadow() & (1 << offset));
	};

	static int cs3_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
	{
	if (offset > 15)
	return 0;
	return -EINVAL;
	};

	static int cs3_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
	int value)
	{
	if (offset > 15)
	return -EINVAL;
	cs3_gpio_set(chip, offset, value);
	return 0;
	};

	static struct map_desc simpad_io_desc[] __initdata = {
	{ /* MQ200 */
	.virtual = 0xf2800000,
	.pfn = __phys_to_pfn(0x4b800000),
	.length = 0x00800000,
	.type = MT_DEVICE
	}, { /* Simpad CS3 */
	.virtual = (unsigned long)CS3_BASE,
	.pfn = __phys_to_pfn(SA1100_CS3_PHYS),
	.length = 0x00100000,
	.type = MT_DEVICE
	},
	};


	static void simpad_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
	{
	if (port->mapbase == (u_int)&Ser1UTCR0) {
	if (state)
	{
	simpad_clear_cs3_bit(RS232_ON);
	simpad_clear_cs3_bit(DECT_POWER_ON);
	}else
	{
	simpad_set_cs3_bit(RS232_ON);
	simpad_set_cs3_bit(DECT_POWER_ON);
	}
	}
	}

	static struct sa1100_port_fns simpad_port_fns __initdata = {
	.pm = simpad_uart_pm,
	};


	static struct mtd_partition simpad_partitions[] = {
	{
	.name = "SIMpad boot firmware",
	.size = 0x00080000,
	.offset = 0,
	.mask_flags = MTD_WRITEABLE,
	}, {
	.name = "SIMpad kernel",
	.size = 0x0010000,
	.offset = MTDPART_OFS_APPEND,
	}, {
	.name = "SIMpad root jffs2",
	.size = MTDPART_SIZ_FULL,
	.offset = MTDPART_OFS_APPEND,
	}
	};

	static struct flash_platform_data simpad_flash_data = {
	.map_name = "cfi_probe",
	.parts = simpad_partitions,
	.nr_parts = ARRAY_SIZE(simpad_partitions),
	};


	static struct resource simpad_flash_resources [] = {
	DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_16M),
	DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_16M),
	};

	static struct ucb1x00_plat_data simpad_ucb1x00_data = {
	.gpio_base = SIMPAD_UCB1X00_GPIO_BASE,
	};

	static struct mcp_plat_data simpad_mcp_data = {
	.mccr0 = MCCR0_ADM,
	.sclk_rate = 11981000,
	.codec_pdata = &simpad_ucb1x00_data,
	};



	static void __init simpad_map_io(void)
	{
	sa1100_map_io();

	iotable_init(simpad_io_desc, ARRAY_SIZE(simpad_io_desc));

	/* Initialize CS3 */
	cs3_shadow = (EN1 \| EN0 \| LED2_ON \| DISPLAY_ON \|
	RS232_ON \| ENABLE_5V \| RESET_SIMCARD \| DECT_POWER_ON);
	__simpad_write_cs3(); /* Spinlocks not yet initialized */

	sa1100_register_uart_fns(&simpad_port_fns);
	sa1100_register_uart(0, 3); /* serial interface */
	sa1100_register_uart(1, 1); /* DECT */

	// Reassign UART 1 pins
	GAFR \|= GPIO_UART_TXD \| GPIO_UART_RXD;
	GPDR \|= GPIO_UART_TXD \| GPIO_LDD13 \| GPIO_LDD15;
	GPDR &= ~GPIO_UART_RXD;
	PPAR \|= PPAR_UPR;

	/*
	* Set up registers for sleep mode.
	*/


	PWER = PWER_GPIO0\| PWER_RTC;
	PGSR = 0x818;
	PCFR = 0;
	PSDR = 0;

	}

	static void simpad_power_off(void)
	{
	local_irq_disable();
	cs3_shadow = SD_MEDIAQ;
	__simpad_write_cs3(); /* Bypass spinlock here */

	/* disable internal oscillator, float CS lines */
	PCFR = (PCFR_OPDE \| PCFR_FP \| PCFR_FS);
	/* enable wake-up on GPIO0 */
	PWER = GFER = GRER = PWER_GPIO0;
	/*
	* set scratchpad to zero, just in case it is used as a
	* restart address by the bootloader.
	*/
	PSPR = 0;
	PGSR = 0;
	/* enter sleep mode */
	PMCR = PMCR_SF;
	while(1);

	local_irq_enable(); /* we won't ever call it */


	}

	/*
	* gpio_keys
	*/

	static struct gpio_keys_button simpad_button_table[] = {
	{ KEY_POWER, IRQ_GPIO_POWER_BUTTON, 1, "power button" },
	};

	static struct gpio_keys_platform_data simpad_keys_data = {
	.buttons = simpad_button_table,
	.nbuttons = ARRAY_SIZE(simpad_button_table),
	};

	static struct platform_device simpad_keys = {
	.name = "gpio-keys",
	.dev = {
	.platform_data = &simpad_keys_data,
	},
	};

	static struct gpio_keys_button simpad_polled_button_table[] = {
	{ KEY_PROG1, SIMPAD_UCB1X00_GPIO_PROG1, 1, "prog1 button" },
	{ KEY_PROG2, SIMPAD_UCB1X00_GPIO_PROG2, 1, "prog2 button" },
	{ KEY_UP, SIMPAD_UCB1X00_GPIO_UP, 1, "up button" },
	{ KEY_DOWN, SIMPAD_UCB1X00_GPIO_DOWN, 1, "down button" },
	{ KEY_LEFT, SIMPAD_UCB1X00_GPIO_LEFT, 1, "left button" },
	{ KEY_RIGHT, SIMPAD_UCB1X00_GPIO_RIGHT, 1, "right button" },
	};

	static struct gpio_keys_platform_data simpad_polled_keys_data = {
	.buttons = simpad_polled_button_table,
	.nbuttons = ARRAY_SIZE(simpad_polled_button_table),
	.poll_interval = 50,
	};

	static struct platform_device simpad_polled_keys = {
	.name = "gpio-keys-polled",
	.dev = {
	.platform_data = &simpad_polled_keys_data,
	},
	};

	/*
	* GPIO LEDs
	*/

	static struct gpio_led simpad_leds[] = {
	{
	.name = "simpad:power",
	.gpio = SIMPAD_CS3_LED2_ON,
	.active_low = 0,
	.default_trigger = "default-on",
	},
	};

	static struct gpio_led_platform_data simpad_led_data = {
	.num_leds = ARRAY_SIZE(simpad_leds),
	.leds = simpad_leds,
	};

	static struct platform_device simpad_gpio_leds = {
	.name = "leds-gpio",
	.id = 0,
	.dev = {
	.platform_data = &simpad_led_data,
	},
	};

	/*
	* i2c
	*/
	static struct gpiod_lookup_table simpad_i2c_gpiod_table = {
	.dev_id = "i2c-gpio",
	.table = {
	GPIO_LOOKUP_IDX("gpio", 21, NULL, 0,
	GPIO_ACTIVE_HIGH \| GPIO_OPEN_DRAIN),
	GPIO_LOOKUP_IDX("gpio", 25, NULL, 1,
	GPIO_ACTIVE_HIGH \| GPIO_OPEN_DRAIN),
	},
	};

	static struct i2c_gpio_platform_data simpad_i2c_data = {
	.udelay = 10,
	.timeout = HZ,
	};

	static struct platform_device simpad_i2c = {
	.name = "i2c-gpio",
	.id = 0,
	.dev = {
	.platform_data = &simpad_i2c_data,
	},
	};

	/*
	* MediaQ Video Device
	*/
	static struct platform_device simpad_mq200fb = {
	.name = "simpad-mq200",
	.id = 0,
	};

	static struct platform_device *devices[] __initdata = {
	&simpad_keys,
	&simpad_polled_keys,
	&simpad_mq200fb,
	&simpad_gpio_leds,
	&simpad_i2c,
	};



	static int __init simpad_init(void)
	{
	int ret;

	spin_lock_init(&cs3_lock);

	cs3_gpio.label = "simpad_cs3";
	cs3_gpio.base = SIMPAD_CS3_GPIO_BASE;
	cs3_gpio.ngpio = 24;
	cs3_gpio.set = cs3_gpio_set;
	cs3_gpio.get = cs3_gpio_get;
	cs3_gpio.direction_input = cs3_gpio_direction_input;
	cs3_gpio.direction_output = cs3_gpio_direction_output;
	ret = gpiochip_add_data(&cs3_gpio, NULL);
	if (ret)
	printk(KERN_WARNING "simpad: Unable to register cs3 GPIO device");

	pm_power_off = simpad_power_off;

	sa11x0_ppc_configure_mcp();
	sa11x0_register_mtd(&simpad_flash_data, simpad_flash_resources,
	ARRAY_SIZE(simpad_flash_resources));
	sa11x0_register_mcp(&simpad_mcp_data);

	gpiod_add_lookup_table(&simpad_i2c_gpiod_table);
	ret = platform_add_devices(devices, ARRAY_SIZE(devices));
	if(ret)
	printk(KERN_WARNING "simpad: Unable to register mq200 framebuffer device");

	return 0;
	}

	arch_initcall(simpad_init);


	MACHINE_START(SIMPAD, "Simpad")
	/* Maintainer: Holger Freyther */
	.atag_offset = 0x100,
	.map_io = simpad_map_io,
	.nr_irqs = SA1100_NR_IRQS,
	.init_irq = sa1100_init_irq,
	.init_late = sa11x0_init_late,
	.init_time = sa1100_timer_init,
	.restart = sa11x0_restart,
	MACHINE_END