303 строки
6.4 KiB
C
303 строки
6.4 KiB
C
/*
|
|
* 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/i2c-gpio.h>
|
|
#include <asm/bootinfo.h>
|
|
#include <asm/idle.h>
|
|
#include <asm/reboot.h>
|
|
#include <asm/mach-au1x00/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 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 i2c_gpio_platform_data gpr_i2c_data = {
|
|
.sda_pin = 209,
|
|
.sda_is_open_drain = 1,
|
|
.scl_pin = 210,
|
|
.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),
|
|
.type = "lm83"
|
|
}
|
|
};
|
|
|
|
|
|
|
|
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)
|
|
{
|
|
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);
|