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// SPDX-License-Identifier: GPL-2.0-only
/*
* board-og.c -- support for the OpenGear KS8695 based boards.
*/
#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 "devices.h"
#include <mach/regs-gpio.h>
#include <mach/gpio-ks8695.h>
#include "generic.h"
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;
}
static struct ks8695_pci_cfg __initdata og_pci = {
.mode = KS8695_MODE_PCI,
.map_irq = og_pci_map_irq,
};
static void __init og_register_pci(void)
{
/* Initialize the GPIO lines for interrupt mode */
ks8695_gpio_interrupt(KS8695_GPIO_0, IRQ_TYPE_LEVEL_LOW);
/* Cardbus Slot */
if (machine_is_im4004())
ks8695_gpio_interrupt(KS8695_GPIO_1, IRQ_TYPE_LEVEL_LOW);
if (IS_ENABLED(CONFIG_PCI))
ks8695_init_pci(&og_pci);
}
/*
* 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;
/* Some boards use a different GPIO as the PCI reset line */
if (machine_is_im4004())
rstline = 2;
else if (machine_is_im42xx())
rstline = 0;
gpio_request(rstline, "PCI reset");
gpio_direction_output(rstline, 0);
/* 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);
}
/*
* Direct connect serial ports (non-PCI that is).
*/
#define S8250_PHYS 0x03800000
#define S8250_VIRT 0xf4000000
#define S8250_SIZE 0x00100000
static struct map_desc og_io_desc[] __initdata = {
{
.virtual = S8250_VIRT,
.pfn = __phys_to_pfn(S8250_PHYS),
.length = S8250_SIZE,
.type = MT_DEVICE,
}
};
static struct resource og_uart_resources[] = {
{
.start = S8250_VIRT,
.end = S8250_VIRT + S8250_SIZE,
.flags = IORESOURCE_MEM
},
};
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,
},
{ },
};
static struct platform_device og_uart = {
.name = "serial8250",
.id = 0,
.dev.platform_data = og_uart_data,
.num_resources = 1,
.resource = og_uart_resources
};
static struct platform_device *og_devices[] __initdata = {
&og_uart
};
static void __init og_init(void)
{
ks8695_register_gpios();
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();
}
ks8695_add_device_lan();
ks8695_add_device_wan();
}
#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,
.init_time = ks8695_timer_init,
.restart = ks8695_restart,
MACHINE_END
#endif
#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,
.init_time = ks8695_timer_init,
.restart = ks8695_restart,
MACHINE_END
#endif
#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,
.init_time = ks8695_timer_init,
.restart = ks8695_restart,
MACHINE_END
#endif
#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,
.init_time = ks8695_timer_init,
.restart = ks8695_restart,
MACHINE_END
#endif
#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,
.init_time = ks8695_timer_init,
.restart = ks8695_restart,
MACHINE_END
#endif
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