| // 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 |