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Olof Johansson
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Sep 12, 2012
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/* | ||
* board-og.c -- support for the OpenGear KS8695 based boards. | ||
* | ||
* This program is free software; you can redistribute it and/or modify | ||
* it under the terms of the GNU General Public License version 2 as | ||
* published by the Free Software Foundation. | ||
*/ | ||
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||
#include <linux/kernel.h> | ||
#include <linux/types.h> | ||
#include <linux/interrupt.h> | ||
#include <linux/init.h> | ||
#include <linux/delay.h> | ||
#include <linux/platform_device.h> | ||
#include <linux/serial_8250.h> | ||
#include <linux/gpio.h> | ||
#include <linux/irq.h> | ||
#include <asm/mach-types.h> | ||
#include <asm/mach/arch.h> | ||
#include <asm/mach/map.h> | ||
#include <mach/devices.h> | ||
#include <mach/regs-gpio.h> | ||
#include <mach/gpio-ks8695.h> | ||
#include "generic.h" | ||
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static int og_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) | ||
{ | ||
if (machine_is_im4004() && (slot == 8)) | ||
return KS8695_IRQ_EXTERN1; | ||
return KS8695_IRQ_EXTERN0; | ||
} | ||
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static struct ks8695_pci_cfg __initdata og_pci = { | ||
.mode = KS8695_MODE_PCI, | ||
.map_irq = og_pci_map_irq, | ||
}; | ||
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static void __init og_register_pci(void) | ||
{ | ||
/* Initialize the GPIO lines for interrupt mode */ | ||
ks8695_gpio_interrupt(KS8695_GPIO_0, IRQ_TYPE_LEVEL_LOW); | ||
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/* Cardbus Slot */ | ||
if (machine_is_im4004()) | ||
ks8695_gpio_interrupt(KS8695_GPIO_1, IRQ_TYPE_LEVEL_LOW); | ||
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ks8695_init_pci(&og_pci); | ||
} | ||
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/* | ||
* The PCI bus reset is driven by a dedicated GPIO line. Toggle it here | ||
* and bring the PCI bus out of reset. | ||
*/ | ||
static void __init og_pci_bus_reset(void) | ||
{ | ||
unsigned int rstline = 1; | ||
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/* Some boards use a different GPIO as the PCI reset line */ | ||
if (machine_is_im4004()) | ||
rstline = 2; | ||
else if (machine_is_im42xx()) | ||
rstline = 0; | ||
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gpio_request(rstline, "PCI reset"); | ||
gpio_direction_output(rstline, 0); | ||
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/* Drive a reset on the PCI reset line */ | ||
gpio_set_value(rstline, 1); | ||
gpio_set_value(rstline, 0); | ||
mdelay(100); | ||
gpio_set_value(rstline, 1); | ||
mdelay(100); | ||
} | ||
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/* | ||
* Direct connect serial ports (non-PCI that is). | ||
*/ | ||
#define S8250_PHYS 0x03800000 | ||
#define S8250_VIRT 0xf4000000 | ||
#define S8250_SIZE 0x00100000 | ||
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static struct __initdata map_desc og_io_desc[] = { | ||
{ | ||
.virtual = S8250_VIRT, | ||
.pfn = __phys_to_pfn(S8250_PHYS), | ||
.length = S8250_SIZE, | ||
.type = MT_DEVICE, | ||
} | ||
}; | ||
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static struct resource og_uart_resources[] = { | ||
{ | ||
.start = S8250_VIRT, | ||
.end = S8250_VIRT + S8250_SIZE, | ||
.flags = IORESOURCE_MEM | ||
}, | ||
}; | ||
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static struct plat_serial8250_port og_uart_data[] = { | ||
{ | ||
.mapbase = S8250_VIRT, | ||
.membase = (char *) S8250_VIRT, | ||
.irq = 3, | ||
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, | ||
.iotype = UPIO_MEM, | ||
.regshift = 2, | ||
.uartclk = 115200 * 16, | ||
}, | ||
{ }, | ||
}; | ||
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static struct platform_device og_uart = { | ||
.name = "serial8250", | ||
.id = 0, | ||
.dev.platform_data = og_uart_data, | ||
.num_resources = 1, | ||
.resource = og_uart_resources | ||
}; | ||
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static struct platform_device *og_devices[] __initdata = { | ||
&og_uart | ||
}; | ||
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static void __init og_init(void) | ||
{ | ||
ks8695_register_gpios(); | ||
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if (machine_is_cm4002()) { | ||
ks8695_gpio_interrupt(KS8695_GPIO_1, IRQ_TYPE_LEVEL_HIGH); | ||
iotable_init(og_io_desc, ARRAY_SIZE(og_io_desc)); | ||
platform_add_devices(og_devices, ARRAY_SIZE(og_devices)); | ||
} else { | ||
og_pci_bus_reset(); | ||
og_register_pci(); | ||
} | ||
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ks8695_add_device_lan(); | ||
ks8695_add_device_wan(); | ||
} | ||
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#ifdef CONFIG_MACH_CM4002 | ||
MACHINE_START(CM4002, "OpenGear/CM4002") | ||
/* OpenGear Inc. */ | ||
.atag_offset = 0x100, | ||
.map_io = ks8695_map_io, | ||
.init_irq = ks8695_init_irq, | ||
.init_machine = og_init, | ||
.timer = &ks8695_timer, | ||
.restart = ks8695_restart, | ||
MACHINE_END | ||
#endif | ||
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#ifdef CONFIG_MACH_CM4008 | ||
MACHINE_START(CM4008, "OpenGear/CM4008") | ||
/* OpenGear Inc. */ | ||
.atag_offset = 0x100, | ||
.map_io = ks8695_map_io, | ||
.init_irq = ks8695_init_irq, | ||
.init_machine = og_init, | ||
.timer = &ks8695_timer, | ||
.restart = ks8695_restart, | ||
MACHINE_END | ||
#endif | ||
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#ifdef CONFIG_MACH_CM41xx | ||
MACHINE_START(CM41XX, "OpenGear/CM41xx") | ||
/* OpenGear Inc. */ | ||
.atag_offset = 0x100, | ||
.map_io = ks8695_map_io, | ||
.init_irq = ks8695_init_irq, | ||
.init_machine = og_init, | ||
.timer = &ks8695_timer, | ||
.restart = ks8695_restart, | ||
MACHINE_END | ||
#endif | ||
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#ifdef CONFIG_MACH_IM4004 | ||
MACHINE_START(IM4004, "OpenGear/IM4004") | ||
/* OpenGear Inc. */ | ||
.atag_offset = 0x100, | ||
.map_io = ks8695_map_io, | ||
.init_irq = ks8695_init_irq, | ||
.init_machine = og_init, | ||
.timer = &ks8695_timer, | ||
.restart = ks8695_restart, | ||
MACHINE_END | ||
#endif | ||
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#ifdef CONFIG_MACH_IM42xx | ||
MACHINE_START(IM42XX, "OpenGear/IM42xx") | ||
/* OpenGear Inc. */ | ||
.atag_offset = 0x100, | ||
.map_io = ks8695_map_io, | ||
.init_irq = ks8695_init_irq, | ||
.init_machine = og_init, | ||
.timer = &ks8695_timer, | ||
.restart = ks8695_restart, | ||
MACHINE_END | ||
#endif |
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