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a7b8575423
A number of boards produced by OpenGear and based on the Micrel KS8695 SoC.
Add board support to the KS8695 kernel code to support them.
The following machine type entries will need to be added back into the
mach-types file with these in mainline:
cm4008 MACH_CM4008 CM4008 624
cm41xx MACH_CM41XX CM41XX 672
cm4002 MACH_CM4002 CM4002 876
im42xx MACH_IM42XX IM42XX 1105
im4004 MACH_IM4004 IM4004 1400
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
200 lines
4.4 KiB
C
200 lines
4.4 KiB
C
/*
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* board-og.c -- support for the OpenGear KS8695 based boards.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/platform_device.h>
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#include <linux/serial_8250.h>
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#include <linux/gpio.h>
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#include <linux/irq.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <mach/devices.h>
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#include <mach/regs-gpio.h>
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#include <mach/gpio-ks8695.h>
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#include "generic.h"
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static int og_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
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{
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if (machine_is_im4004() && (slot == 8))
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return KS8695_IRQ_EXTERN1;
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return KS8695_IRQ_EXTERN0;
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}
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static struct ks8695_pci_cfg __initdata og_pci = {
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.mode = KS8695_MODE_PCI,
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.map_irq = og_pci_map_irq,
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};
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static void __init og_register_pci(void)
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{
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/* Initialize the GPIO lines for interrupt mode */
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ks8695_gpio_interrupt(KS8695_GPIO_0, IRQ_TYPE_LEVEL_LOW);
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/* Cardbus Slot */
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if (machine_is_im4004())
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ks8695_gpio_interrupt(KS8695_GPIO_1, IRQ_TYPE_LEVEL_LOW);
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ks8695_init_pci(&og_pci);
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}
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/*
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* The PCI bus reset is driven by a dedicated GPIO line. Toggle it here
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* and bring the PCI bus out of reset.
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*/
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static void __init og_pci_bus_reset(void)
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{
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unsigned int rstline = 1;
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/* Some boards use a different GPIO as the PCI reset line */
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if (machine_is_im4004())
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rstline = 2;
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else if (machine_is_im42xx())
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rstline = 0;
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gpio_request(rstline, "PCI reset");
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gpio_direction_output(rstline, 0);
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/* Drive a reset on the PCI reset line */
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gpio_set_value(rstline, 1);
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gpio_set_value(rstline, 0);
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mdelay(100);
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gpio_set_value(rstline, 1);
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mdelay(100);
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}
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/*
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* Direct connect serial ports (non-PCI that is).
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*/
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#define S8250_PHYS 0x03800000
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#define S8250_VIRT 0xf4000000
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#define S8250_SIZE 0x00100000
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static struct __initdata map_desc og_io_desc[] = {
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{
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.virtual = S8250_VIRT,
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.pfn = __phys_to_pfn(S8250_PHYS),
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.length = S8250_SIZE,
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.type = MT_DEVICE,
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}
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};
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static struct resource og_uart_resources[] = {
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{
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.start = S8250_VIRT,
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.end = S8250_VIRT + S8250_SIZE,
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.flags = IORESOURCE_MEM
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},
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};
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static struct plat_serial8250_port og_uart_data[] = {
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{
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.mapbase = S8250_VIRT,
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.membase = (char *) S8250_VIRT,
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.irq = 3,
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.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
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.iotype = UPIO_MEM,
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.regshift = 2,
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.uartclk = 115200 * 16,
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},
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{ },
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};
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static struct platform_device og_uart = {
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.name = "serial8250",
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.id = 0,
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.dev.platform_data = og_uart_data,
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.num_resources = 1,
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.resource = og_uart_resources
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};
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static struct platform_device *og_devices[] __initdata = {
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&og_uart
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};
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static void __init og_init(void)
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{
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ks8695_register_gpios();
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if (machine_is_cm4002()) {
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ks8695_gpio_interrupt(KS8695_GPIO_1, IRQ_TYPE_LEVEL_HIGH);
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iotable_init(og_io_desc, ARRAY_SIZE(og_io_desc));
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platform_add_devices(og_devices, ARRAY_SIZE(og_devices));
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} else {
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og_pci_bus_reset();
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og_register_pci();
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}
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ks8695_add_device_lan();
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ks8695_add_device_wan();
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}
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#ifdef CONFIG_MACH_CM4002
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MACHINE_START(CM4002, "OpenGear/CM4002")
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/* OpenGear Inc. */
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.atag_offset = 0x100,
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.map_io = ks8695_map_io,
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.init_irq = ks8695_init_irq,
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.init_machine = og_init,
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.timer = &ks8695_timer,
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.restart = ks8695_restart,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_CM4008
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MACHINE_START(CM4008, "OpenGear/CM4008")
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/* OpenGear Inc. */
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.atag_offset = 0x100,
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.map_io = ks8695_map_io,
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.init_irq = ks8695_init_irq,
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.init_machine = og_init,
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.timer = &ks8695_timer,
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.restart = ks8695_restart,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_CM41xx
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MACHINE_START(CM41XX, "OpenGear/CM41xx")
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/* OpenGear Inc. */
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.atag_offset = 0x100,
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.map_io = ks8695_map_io,
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.init_irq = ks8695_init_irq,
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.init_machine = og_init,
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.timer = &ks8695_timer,
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.restart = ks8695_restart,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_IM4004
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MACHINE_START(IM4004, "OpenGear/IM4004")
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/* OpenGear Inc. */
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.atag_offset = 0x100,
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.map_io = ks8695_map_io,
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.init_irq = ks8695_init_irq,
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.init_machine = og_init,
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.timer = &ks8695_timer,
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.restart = ks8695_restart,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_IM42xx
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MACHINE_START(IM42XX, "OpenGear/IM42xx")
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/* OpenGear Inc. */
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.atag_offset = 0x100,
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.map_io = ks8695_map_io,
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.init_irq = ks8695_init_irq,
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.init_machine = og_init,
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.timer = &ks8695_timer,
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.restart = ks8695_restart,
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MACHINE_END
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#endif
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