arch/mips/alchemy/board-gpr.c - third_party/linux - Git at Google

 /*
  * GPR board platform device registration (Au1550)
  *
  * Copyright (C) 2010 Wolfgang Grandegger <wg@denx.de>
  *
  * 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.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */

 #include <linux/delay.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
 #include <linux/pm.h>
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/physmap.h>
 #include <linux/leds.h>
 #include <linux/gpio.h>
 #include <linux/i2c.h>
 #include <linux/platform_data/i2c-gpio.h>
 #include <linux/gpio/machine.h>
 #include <asm/bootinfo.h>
 #include <asm/idle.h>
 #include <asm/reboot.h>
 #include <asm/mach-au1x00/au1000.h>
 #include <asm/mach-au1x00/gpio-au1000.h>
 #include <prom.h>

 const char *get_system_type(void)
 {
 	return "GPR";
 }

 void __init prom_init(void)
 {
 	unsigned char *memsize_str;
 	unsigned long memsize;

 	prom_argc = fw_arg0;
 	prom_argv = (char **)fw_arg1;
 	prom_envp = (char **)fw_arg2;

 	prom_init_cmdline();

 	memsize_str = prom_getenv("memsize");
 	if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
 		memsize = 0x04000000;
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }

 void prom_putchar(unsigned char c)
 {
 	alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
 }

 static void gpr_reset(char *c)
 {
 	/* switch System-LED to orange (red# and green# on) */
 	alchemy_gpio_direction_output(4, 0);
 	alchemy_gpio_direction_output(5, 0);

 	/* trigger watchdog to reset board in 200ms */
 	printk(KERN_EMERG "Triggering watchdog soft reset...\n");
 	raw_local_irq_disable();
 	alchemy_gpio_direction_output(1, 0);
 	udelay(1);
 	alchemy_gpio_set_value(1, 1);
 	while (1)
 		cpu_wait();
 }

 static void gpr_power_off(void)
 {
 	while (1)
 		cpu_wait();
 }

 void __init board_setup(void)
 {
 	printk(KERN_INFO "Trapeze ITS GPR board\n");

 	pm_power_off = gpr_power_off;
 	_machine_halt = gpr_power_off;
 	_machine_restart = gpr_reset;

 	/* Enable UART1/3 */
 	alchemy_uart_enable(AU1000_UART3_PHYS_ADDR);
 	alchemy_uart_enable(AU1000_UART1_PHYS_ADDR);

 	/* Take away Reset of UMTS-card */
 	alchemy_gpio_direction_output(215, 1);
 }

 /*
  * Watchdog
  */
 static struct resource gpr_wdt_resource[] = {
 	[0] = {
 		.start	= 1,
 		.end	= 1,
 		.name	= "gpr-adm6320-wdt",
 		.flags	= IORESOURCE_IRQ,
 	}
 };

 static struct platform_device gpr_wdt_device = {
 	.name = "adm6320-wdt",
 	.id = 0,
 	.num_resources = ARRAY_SIZE(gpr_wdt_resource),
 	.resource = gpr_wdt_resource,
 };

 /*
  * FLASH
  *
  * 0x00000000-0x00200000 : "kernel"
  * 0x00200000-0x00a00000 : "rootfs"
  * 0x01d00000-0x01f00000 : "config"
  * 0x01c00000-0x01d00000 : "yamon"
  * 0x01d00000-0x01d40000 : "yamon env vars"
  * 0x00000000-0x00a00000 : "kernel+rootfs"
  */
 static struct mtd_partition gpr_mtd_partitions[] = {
 	{
 		.name	= "kernel",
 		.size	= 0x00200000,
 		.offset = 0,
 	},
 	{
 		.name	= "rootfs",
 		.size	= 0x00800000,
 		.offset = MTDPART_OFS_APPEND,
 		.mask_flags = MTD_WRITEABLE,
 	},
 	{
 		.name	= "config",
 		.size	= 0x00200000,
 		.offset = 0x01d00000,
 	},
 	{
 		.name	= "yamon",
 		.size	= 0x00100000,
 		.offset = 0x01c00000,
 	},
 	{
 		.name	= "yamon env vars",
 		.size	= 0x00040000,
 		.offset = MTDPART_OFS_APPEND,
 	},
 	{
 		.name	= "kernel+rootfs",
 		.size	= 0x00a00000,
 		.offset = 0,
 	},
 };

 static struct physmap_flash_data gpr_flash_data = {
 	.width		= 4,
 	.nr_parts	= ARRAY_SIZE(gpr_mtd_partitions),
 	.parts		= gpr_mtd_partitions,
 };

 static struct resource gpr_mtd_resource = {
 	.start	= 0x1e000000,
 	.end	= 0x1fffffff,
 	.flags	= IORESOURCE_MEM,
 };

 static struct platform_device gpr_mtd_device = {
 	.name		= "physmap-flash",
 	.dev		= {
 		.platform_data	= &gpr_flash_data,
 	},
 	.num_resources	= 1,
 	.resource	= &gpr_mtd_resource,
 };

 /*
  * LEDs
  */
 static const struct gpio_led gpr_gpio_leds[] = {
 	{	/* green */
 		.name			= "gpr:green",
 		.gpio			= 4,
 		.active_low		= 1,
 	},
 	{	/* red */
 		.name			= "gpr:red",
 		.gpio			= 5,
 		.active_low		= 1,
 	}
 };

 static struct gpio_led_platform_data gpr_led_data = {
 	.num_leds = ARRAY_SIZE(gpr_gpio_leds),
 	.leds = gpr_gpio_leds,
 };

 static struct platform_device gpr_led_devices = {
 	.name = "leds-gpio",
 	.id = -1,
 	.dev = {
 		.platform_data = &gpr_led_data,
 	}
 };

 /*
  * I2C
  */
 static struct gpiod_lookup_table gpr_i2c_gpiod_table = {
 	.dev_id = "i2c-gpio",
 	.table = {
 		/*
 		 * This should be on "GPIO2" which has base at 200 so
 		 * the global numbers 209 and 210 should correspond to
 		 * local offsets 9 and 10.
 		 */
 		GPIO_LOOKUP_IDX("alchemy-gpio2", 9, NULL, 0,
 				GPIO_ACTIVE_HIGH),
 		GPIO_LOOKUP_IDX("alchemy-gpio2", 10, NULL, 1,
 				GPIO_ACTIVE_HIGH),
 	},
 };

 static struct i2c_gpio_platform_data gpr_i2c_data = {
 	/*
 	 * The open drain mode is hardwired somewhere or an electrical
 	 * property of the alchemy GPIO controller.
 	 */
 	.sda_is_open_drain	= 1,
 	.scl_is_open_drain	= 1,
 	.udelay			= 2,		/* ~100 kHz */
 	.timeout		= HZ,
 };

 static struct platform_device gpr_i2c_device = {
 	.name			= "i2c-gpio",
 	.id			= -1,
 	.dev.platform_data	= &gpr_i2c_data,
 };

 static struct i2c_board_info gpr_i2c_info[] __initdata = {
 	{
 		I2C_BOARD_INFO("lm83", 0x18),
 	}
 };


 static struct resource alchemy_pci_host_res[] = {
 	[0] = {
 		.start	= AU1500_PCI_PHYS_ADDR,
 		.end	= AU1500_PCI_PHYS_ADDR + 0xfff,
 		.flags	= IORESOURCE_MEM,
 	},
 };

 static int gpr_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
 {
 	if ((slot == 0) && (pin == 1))
 		return AU1550_PCI_INTA;
 	else if ((slot == 0) && (pin == 2))
 		return AU1550_PCI_INTB;

 	return 0xff;
 }

 static struct alchemy_pci_platdata gpr_pci_pd = {
 	.board_map_irq	= gpr_map_pci_irq,
 	.pci_cfg_set	= PCI_CONFIG_AEN | PCI_CONFIG_R2H | PCI_CONFIG_R1H |
 			  PCI_CONFIG_CH |
 #if defined(__MIPSEB__)
 			  PCI_CONFIG_SIC_HWA_DAT | PCI_CONFIG_SM,
 #else
 			  0,
 #endif
 };

 static struct platform_device gpr_pci_host_dev = {
 	.dev.platform_data = &gpr_pci_pd,
 	.name		= "alchemy-pci",
 	.id		= 0,
 	.num_resources	= ARRAY_SIZE(alchemy_pci_host_res),
 	.resource	= alchemy_pci_host_res,
 };

 static struct platform_device *gpr_devices[] __initdata = {
 	&gpr_wdt_device,
 	&gpr_mtd_device,
 	&gpr_i2c_device,
 	&gpr_led_devices,
 };

 static int __init gpr_pci_init(void)
 {
 	return platform_device_register(&gpr_pci_host_dev);
 }
 /* must be arch_initcall; MIPS PCI scans busses in a subsys_initcall */
 arch_initcall(gpr_pci_init);


 static int __init gpr_dev_init(void)
 {
 	gpiod_add_lookup_table(&gpr_i2c_gpiod_table);
 	i2c_register_board_info(0, gpr_i2c_info, ARRAY_SIZE(gpr_i2c_info));

 	return platform_add_devices(gpr_devices, ARRAY_SIZE(gpr_devices));
 }
 device_initcall(gpr_dev_init);
	/*
	* GPR board platform device registration (Au1550)
	*
	* Copyright (C) 2010 Wolfgang Grandegger <wg@denx.de>
	*
	* 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.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	*/

	#include <linux/delay.h>
	#include <linux/init.h>
	#include <linux/interrupt.h>
	#include <linux/kernel.h>
	#include <linux/platform_device.h>
	#include <linux/pm.h>
	#include <linux/mtd/partitions.h>
	#include <linux/mtd/physmap.h>
	#include <linux/leds.h>
	#include <linux/gpio.h>
	#include <linux/i2c.h>
	#include <linux/platform_data/i2c-gpio.h>
	#include <linux/gpio/machine.h>
	#include <asm/bootinfo.h>
	#include <asm/idle.h>
	#include <asm/reboot.h>
	#include <asm/mach-au1x00/au1000.h>
	#include <asm/mach-au1x00/gpio-au1000.h>
	#include <prom.h>

	const char *get_system_type(void)
	{
	return "GPR";
	}

	void __init prom_init(void)
	{
	unsigned char *memsize_str;
	unsigned long memsize;

	prom_argc = fw_arg0;
	prom_argv = (char **)fw_arg1;
	prom_envp = (char **)fw_arg2;

	prom_init_cmdline();

	memsize_str = prom_getenv("memsize");
	if (!memsize_str \|\| kstrtoul(memsize_str, 0, &memsize))
	memsize = 0x04000000;
	add_memory_region(0, memsize, BOOT_MEM_RAM);
	}

	void prom_putchar(unsigned char c)
	{
	alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
	}

	static void gpr_reset(char *c)
	{
	/* switch System-LED to orange (red# and green# on) */
	alchemy_gpio_direction_output(4, 0);
	alchemy_gpio_direction_output(5, 0);

	/* trigger watchdog to reset board in 200ms */
	printk(KERN_EMERG "Triggering watchdog soft reset...\n");
	raw_local_irq_disable();
	alchemy_gpio_direction_output(1, 0);
	udelay(1);
	alchemy_gpio_set_value(1, 1);
	while (1)
	cpu_wait();
	}

	static void gpr_power_off(void)
	{
	while (1)
	cpu_wait();
	}

	void __init board_setup(void)
	{
	printk(KERN_INFO "Trapeze ITS GPR board\n");

	pm_power_off = gpr_power_off;
	_machine_halt = gpr_power_off;
	_machine_restart = gpr_reset;

	/* Enable UART1/3 */
	alchemy_uart_enable(AU1000_UART3_PHYS_ADDR);
	alchemy_uart_enable(AU1000_UART1_PHYS_ADDR);

	/* Take away Reset of UMTS-card */
	alchemy_gpio_direction_output(215, 1);
	}

	/*
	* Watchdog
	*/
	static struct resource gpr_wdt_resource[] = {
	[0] = {
	.start = 1,
	.end = 1,
	.name = "gpr-adm6320-wdt",
	.flags = IORESOURCE_IRQ,
	}
	};

	static struct platform_device gpr_wdt_device = {
	.name = "adm6320-wdt",
	.id = 0,
	.num_resources = ARRAY_SIZE(gpr_wdt_resource),
	.resource = gpr_wdt_resource,
	};

	/*
	* FLASH
	*
	* 0x00000000-0x00200000 : "kernel"
	* 0x00200000-0x00a00000 : "rootfs"
	* 0x01d00000-0x01f00000 : "config"
	* 0x01c00000-0x01d00000 : "yamon"
	* 0x01d00000-0x01d40000 : "yamon env vars"
	* 0x00000000-0x00a00000 : "kernel+rootfs"
	*/
	static struct mtd_partition gpr_mtd_partitions[] = {
	{
	.name = "kernel",
	.size = 0x00200000,
	.offset = 0,
	},
	{
	.name = "rootfs",
	.size = 0x00800000,
	.offset = MTDPART_OFS_APPEND,
	.mask_flags = MTD_WRITEABLE,
	},
	{
	.name = "config",
	.size = 0x00200000,
	.offset = 0x01d00000,
	},
	{
	.name = "yamon",
	.size = 0x00100000,
	.offset = 0x01c00000,
	},
	{
	.name = "yamon env vars",
	.size = 0x00040000,
	.offset = MTDPART_OFS_APPEND,
	},
	{
	.name = "kernel+rootfs",
	.size = 0x00a00000,
	.offset = 0,
	},
	};

	static struct physmap_flash_data gpr_flash_data = {
	.width = 4,
	.nr_parts = ARRAY_SIZE(gpr_mtd_partitions),
	.parts = gpr_mtd_partitions,
	};

	static struct resource gpr_mtd_resource = {
	.start = 0x1e000000,
	.end = 0x1fffffff,
	.flags = IORESOURCE_MEM,
	};

	static struct platform_device gpr_mtd_device = {
	.name = "physmap-flash",
	.dev = {
	.platform_data = &gpr_flash_data,
	},
	.num_resources = 1,
	.resource = &gpr_mtd_resource,
	};

	/*
	* LEDs
	*/
	static const struct gpio_led gpr_gpio_leds[] = {
	{ /* green */
	.name = "gpr:green",
	.gpio = 4,
	.active_low = 1,
	},
	{ /* red */
	.name = "gpr:red",
	.gpio = 5,
	.active_low = 1,
	}
	};

	static struct gpio_led_platform_data gpr_led_data = {
	.num_leds = ARRAY_SIZE(gpr_gpio_leds),
	.leds = gpr_gpio_leds,
	};

	static struct platform_device gpr_led_devices = {
	.name = "leds-gpio",
	.id = -1,
	.dev = {
	.platform_data = &gpr_led_data,
	}
	};

	/*
	* I2C
	*/
	static struct gpiod_lookup_table gpr_i2c_gpiod_table = {
	.dev_id = "i2c-gpio",
	.table = {
	/*
	* This should be on "GPIO2" which has base at 200 so
	* the global numbers 209 and 210 should correspond to
	* local offsets 9 and 10.
	*/
	GPIO_LOOKUP_IDX("alchemy-gpio2", 9, NULL, 0,
	GPIO_ACTIVE_HIGH),
	GPIO_LOOKUP_IDX("alchemy-gpio2", 10, NULL, 1,
	GPIO_ACTIVE_HIGH),
	},
	};

	static struct i2c_gpio_platform_data gpr_i2c_data = {
	/*
	* The open drain mode is hardwired somewhere or an electrical
	* property of the alchemy GPIO controller.
	*/
	.sda_is_open_drain = 1,
	.scl_is_open_drain = 1,
	.udelay = 2, /* ~100 kHz */
	.timeout = HZ,
	};

	static struct platform_device gpr_i2c_device = {
	.name = "i2c-gpio",
	.id = -1,
	.dev.platform_data = &gpr_i2c_data,
	};

	static struct i2c_board_info gpr_i2c_info[] __initdata = {
	{
	I2C_BOARD_INFO("lm83", 0x18),
	}
	};



	static struct resource alchemy_pci_host_res[] = {
	[0] = {
	.start = AU1500_PCI_PHYS_ADDR,
	.end = AU1500_PCI_PHYS_ADDR + 0xfff,
	.flags = IORESOURCE_MEM,
	},
	};

	static int gpr_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin)
	{
	if ((slot == 0) && (pin == 1))
	return AU1550_PCI_INTA;
	else if ((slot == 0) && (pin == 2))
	return AU1550_PCI_INTB;

	return 0xff;
	}

	static struct alchemy_pci_platdata gpr_pci_pd = {
	.board_map_irq = gpr_map_pci_irq,
	.pci_cfg_set = PCI_CONFIG_AEN \| PCI_CONFIG_R2H \| PCI_CONFIG_R1H \|
	PCI_CONFIG_CH \|
	#if defined(__MIPSEB__)
	PCI_CONFIG_SIC_HWA_DAT \| PCI_CONFIG_SM,
	#else
	0,
	#endif
	};

	static struct platform_device gpr_pci_host_dev = {
	.dev.platform_data = &gpr_pci_pd,
	.name = "alchemy-pci",
	.id = 0,
	.num_resources = ARRAY_SIZE(alchemy_pci_host_res),
	.resource = alchemy_pci_host_res,
	};

	static struct platform_device *gpr_devices[] __initdata = {
	&gpr_wdt_device,
	&gpr_mtd_device,
	&gpr_i2c_device,
	&gpr_led_devices,
	};

	static int __init gpr_pci_init(void)
	{
	return platform_device_register(&gpr_pci_host_dev);
	}
	/* must be arch_initcall; MIPS PCI scans busses in a subsys_initcall */
	arch_initcall(gpr_pci_init);


	static int __init gpr_dev_init(void)
	{
	gpiod_add_lookup_table(&gpr_i2c_gpiod_table);
	i2c_register_board_info(0, gpr_i2c_info, ARRAY_SIZE(gpr_i2c_info));

	return platform_add_devices(gpr_devices, ARRAY_SIZE(gpr_devices));
	}
	device_initcall(gpr_dev_init);