#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/i2c.h>
#include <linux/platform_data/i2c-gpio.h>
#include <linux/gpio/machine.h>
#include <linux/gpio/property.h>
#include <linux/property.h>
#include <asm/bootinfo.h>
#include <asm/idle.h>
#include <asm/reboot.h>
#include <asm/setup.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 prom_putchar(char c)
{
alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
}
static void gpr_reset(char *c)
{
alchemy_gpio_direction_output(4, 0);
alchemy_gpio_direction_output(5, 0);
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;
alchemy_uart_enable(AU1000_UART3_PHYS_ADDR);
alchemy_uart_enable(AU1000_UART1_PHYS_ADDR);
alchemy_gpio_direction_output(215, 1);
}
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,
};
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,
};
static const struct software_node gpr_gpio_leds_node = {
.name = "gpr-leds",
};
static const struct property_entry gpr_green_led_props[] = {
PROPERTY_ENTRY_GPIO("gpios", &alchemy_gpio1_node, 4, GPIO_ACTIVE_LOW),
{ }
};
static const struct software_node gpr_green_led_node = {
.name = "gpr:green",
.parent = &gpr_gpio_leds_node,
.properties = gpr_green_led_props,
};
static const struct property_entry gpr_red_led_props[] = {
PROPERTY_ENTRY_GPIO("gpios", &alchemy_gpio1_node, 5, GPIO_ACTIVE_LOW),
{ }
};
static const struct software_node gpr_red_led_node = {
.name = "gpr:red",
.parent = &gpr_gpio_leds_node,
.properties = gpr_red_led_props,
};
static const struct software_node * const gpr_gpio_leds_swnodes[] __initconst = {
&gpr_gpio_leds_node,
&gpr_green_led_node,
&gpr_red_led_node,
NULL
};
static void __init gpr_leds_init(void)
{
const struct platform_device_info pdevinfo = {
.name = "leds-gpio",
.id = PLATFORM_DEVID_NONE,
.swnode = &gpr_gpio_leds_node,
};
struct platform_device *pd;
int err;
err = software_node_register_node_group(gpr_gpio_leds_swnodes);
if (err) {
pr_err("failed to register LED software nodes: %d\n", err);
return;
}
pd = platform_device_register_full(&pdevinfo);
err = PTR_ERR_OR_ZERO(pd);
if (err)
pr_err("failed to create LED device: %d\n", err);
}
static const struct property_entry gpr_i2c_props[] __initconst = {
PROPERTY_ENTRY_GPIO("sda-gpios", &alchemy_gpio2_node, 9, GPIO_ACTIVE_HIGH),
PROPERTY_ENTRY_GPIO("scl-gpios", &alchemy_gpio2_node, 10, GPIO_ACTIVE_HIGH),
PROPERTY_ENTRY_U32("i2c-gpio,delay-us", 2),
PROPERTY_ENTRY_U32("i2c-gpio,timeout-ms", 1000),
PROPERTY_ENTRY_BOOL("i2c-gpio,sda-open-drain"),
PROPERTY_ENTRY_BOOL("i2c-gpio,scl-open-drain"),
{ }
};
static const struct platform_device_info gpr_i2c_pdev_info __initconst = {
.name = "i2c-gpio",
.id = PLATFORM_DEVID_NONE,
.properties = gpr_i2c_props,
};
static void __init gpr_i2c_init(void)
{
struct platform_device *pd;
int err;
pd = platform_device_register_full(&gpr_i2c_pdev_info);
err = PTR_ERR_OR_ZERO(pd);
if (err)
pr_err("failed to create I2C device: %d\n", err);
}
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,
};
static int __init gpr_pci_init(void)
{
return platform_device_register(&gpr_pci_host_dev);
}
arch_initcall(gpr_pci_init);
static int __init gpr_dev_init(void)
{
i2c_register_board_info(0, gpr_i2c_info, ARRAY_SIZE(gpr_i2c_info));
gpr_i2c_init();
gpr_leds_init();
return platform_add_devices(gpr_devices, ARRAY_SIZE(gpr_devices));
}
device_initcall(gpr_dev_init);
