+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * DSM-G600 board-level PCI initialization
- *
- * Copyright (C) 2006 Tower Technologies
- * Author: Alessandro Zummo <a.zummo@towertech.it>
- *
- * based on ixdp425-pci.c:
- * Copyright (C) 2002 Intel Corporation.
- * Copyright (C) 2003-2004 MontaVista Software, Inc.
- *
- * Maintainer: http://www.nslu2-linux.org/
- */
-
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <asm/mach/pci.h>
-#include <asm/mach-types.h>
-
-#include "irqs.h"
-
-#define MAX_DEV 4
-#define IRQ_LINES 3
-
-/* PCI controller GPIO to IRQ pin mappings */
-#define INTA 11
-#define INTB 10
-#define INTC 9
-#define INTD 8
-#define INTE 7
-#define INTF 6
-
-void __init dsmg600_pci_preinit(void)
-{
- irq_set_irq_type(IXP4XX_GPIO_IRQ(INTA), IRQ_TYPE_LEVEL_LOW);
- irq_set_irq_type(IXP4XX_GPIO_IRQ(INTB), IRQ_TYPE_LEVEL_LOW);
- irq_set_irq_type(IXP4XX_GPIO_IRQ(INTC), IRQ_TYPE_LEVEL_LOW);
- irq_set_irq_type(IXP4XX_GPIO_IRQ(INTD), IRQ_TYPE_LEVEL_LOW);
- irq_set_irq_type(IXP4XX_GPIO_IRQ(INTE), IRQ_TYPE_LEVEL_LOW);
- irq_set_irq_type(IXP4XX_GPIO_IRQ(INTF), IRQ_TYPE_LEVEL_LOW);
- ixp4xx_pci_preinit();
-}
-
-static int __init dsmg600_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
-{
- static int pci_irq_table[MAX_DEV][IRQ_LINES] = {
- { IXP4XX_GPIO_IRQ(INTE), -1, -1 },
- { IXP4XX_GPIO_IRQ(INTA), -1, -1 },
- { IXP4XX_GPIO_IRQ(INTB), IXP4XX_GPIO_IRQ(INTC),
- IXP4XX_GPIO_IRQ(INTD) },
- { IXP4XX_GPIO_IRQ(INTF), -1, -1 },
- };
-
- if (slot >= 1 && slot <= MAX_DEV && pin >= 1 && pin <= IRQ_LINES)
- return pci_irq_table[slot - 1][pin - 1];
-
- return -1;
-}
-
-struct hw_pci __initdata dsmg600_pci = {
- .nr_controllers = 1,
- .ops = &ixp4xx_ops,
- .preinit = dsmg600_pci_preinit,
- .setup = ixp4xx_setup,
- .map_irq = dsmg600_map_irq,
-};
-
-int __init dsmg600_pci_init(void)
-{
- if (machine_is_dsmg600())
- pci_common_init(&dsmg600_pci);
-
- return 0;
-}
-
-subsys_initcall(dsmg600_pci_init);
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * DSM-G600 board-setup
- *
- * Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
- * Copyright (C) 2006 Tower Technologies
- *
- * based on ixdp425-setup.c:
- * Copyright (C) 2003-2004 MontaVista Software, Inc.
- * based on nslu2-power.c:
- * Copyright (C) 2005 Tower Technologies
- * based on nslu2-io.c:
- * Copyright (C) 2004 Karen Spearel
- *
- * Author: Alessandro Zummo <a.zummo@towertech.it>
- * Author: Michael Westerhof <mwester@dls.net>
- * Author: Rod Whitby <rod@whitby.id.au>
- * Maintainers: http://www.nslu2-linux.org/
- */
-#include <linux/gpio.h>
-#include <linux/irq.h>
-#include <linux/jiffies.h>
-#include <linux/timer.h>
-#include <linux/serial.h>
-#include <linux/serial_8250.h>
-#include <linux/leds.h>
-#include <linux/reboot.h>
-#include <linux/i2c.h>
-#include <linux/gpio/machine.h>
-
-#include <mach/hardware.h>
-
-#include <asm/mach-types.h>
-#include <asm/mach/arch.h>
-#include <asm/mach/flash.h>
-#include <asm/mach/time.h>
-
-#include "irqs.h"
-
-#define DSMG600_SDA_PIN 5
-#define DSMG600_SCL_PIN 4
-
-/* DSM-G600 Timer Setting */
-#define DSMG600_FREQ 66000000
-
-/* Buttons */
-#define DSMG600_PB_GPIO 15 /* power button */
-#define DSMG600_RB_GPIO 3 /* reset button */
-
-/* Power control */
-#define DSMG600_PO_GPIO 2 /* power off */
-
-/* LEDs */
-#define DSMG600_LED_PWR_GPIO 0
-#define DSMG600_LED_WLAN_GPIO 14
-
-static struct flash_platform_data dsmg600_flash_data = {
- .map_name = "cfi_probe",
- .width = 2,
-};
-
-static struct resource dsmg600_flash_resource = {
- .flags = IORESOURCE_MEM,
-};
-
-static struct platform_device dsmg600_flash = {
- .name = "IXP4XX-Flash",
- .id = 0,
- .dev.platform_data = &dsmg600_flash_data,
- .num_resources = 1,
- .resource = &dsmg600_flash_resource,
-};
-
-static struct gpiod_lookup_table dsmg600_i2c_gpiod_table = {
- .dev_id = "i2c-gpio.0",
- .table = {
- GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", DSMG600_SDA_PIN,
- NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
- GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", DSMG600_SCL_PIN,
- NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
- },
-};
-
-static struct platform_device dsmg600_i2c_gpio = {
- .name = "i2c-gpio",
- .id = 0,
- .dev = {
- .platform_data = NULL,
- },
-};
-
-static struct i2c_board_info __initdata dsmg600_i2c_board_info [] = {
- {
- I2C_BOARD_INFO("pcf8563", 0x51),
- },
-};
-
-static struct gpio_led dsmg600_led_pins[] = {
- {
- .name = "dsmg600:green:power",
- .gpio = DSMG600_LED_PWR_GPIO,
- },
- {
- .name = "dsmg600:green:wlan",
- .gpio = DSMG600_LED_WLAN_GPIO,
- .active_low = true,
- },
-};
-
-static struct gpio_led_platform_data dsmg600_led_data = {
- .num_leds = ARRAY_SIZE(dsmg600_led_pins),
- .leds = dsmg600_led_pins,
-};
-
-static struct platform_device dsmg600_leds = {
- .name = "leds-gpio",
- .id = -1,
- .dev.platform_data = &dsmg600_led_data,
-};
-
-static struct resource dsmg600_uart_resources[] = {
- {
- .start = IXP4XX_UART1_BASE_PHYS,
- .end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
- .flags = IORESOURCE_MEM,
- },
- {
- .start = IXP4XX_UART2_BASE_PHYS,
- .end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
- .flags = IORESOURCE_MEM,
- }
-};
-
-static struct plat_serial8250_port dsmg600_uart_data[] = {
- {
- .mapbase = IXP4XX_UART1_BASE_PHYS,
- .membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
- .irq = IRQ_IXP4XX_UART1,
- .flags = UPF_BOOT_AUTOCONF,
- .iotype = UPIO_MEM,
- .regshift = 2,
- .uartclk = IXP4XX_UART_XTAL,
- },
- {
- .mapbase = IXP4XX_UART2_BASE_PHYS,
- .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
- .irq = IRQ_IXP4XX_UART2,
- .flags = UPF_BOOT_AUTOCONF,
- .iotype = UPIO_MEM,
- .regshift = 2,
- .uartclk = IXP4XX_UART_XTAL,
- },
- { }
-};
-
-static struct platform_device dsmg600_uart = {
- .name = "serial8250",
- .id = PLAT8250_DEV_PLATFORM,
- .dev.platform_data = dsmg600_uart_data,
- .num_resources = ARRAY_SIZE(dsmg600_uart_resources),
- .resource = dsmg600_uart_resources,
-};
-
-static struct platform_device *dsmg600_devices[] __initdata = {
- &dsmg600_i2c_gpio,
- &dsmg600_flash,
- &dsmg600_leds,
-};
-
-static void dsmg600_power_off(void)
-{
- /* enable the pwr cntl and drive it high */
- gpio_direction_output(DSMG600_PO_GPIO, 1);
-}
-
-/* This is used to make sure the power-button pusher is serious. The button
- * must be held until the value of this counter reaches zero.
- */
-static int power_button_countdown;
-
-/* Must hold the button down for at least this many counts to be processed */
-#define PBUTTON_HOLDDOWN_COUNT 4 /* 2 secs */
-
-static void dsmg600_power_handler(struct timer_list *unused);
-static DEFINE_TIMER(dsmg600_power_timer, dsmg600_power_handler);
-
-static void dsmg600_power_handler(struct timer_list *unused)
-{
- /* This routine is called twice per second to check the
- * state of the power button.
- */
-
- if (gpio_get_value(DSMG600_PB_GPIO)) {
-
- /* IO Pin is 1 (button pushed) */
- if (power_button_countdown > 0)
- power_button_countdown--;
-
- } else {
-
- /* Done on button release, to allow for auto-power-on mods. */
- if (power_button_countdown == 0) {
- /* Signal init to do the ctrlaltdel action,
- * this will bypass init if it hasn't started
- * and do a kernel_restart.
- */
- ctrl_alt_del();
-
- /* Change the state of the power LED to "blink" */
- gpio_set_value(DSMG600_LED_PWR_GPIO, 0);
- } else {
- power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
- }
- }
-
- mod_timer(&dsmg600_power_timer, jiffies + msecs_to_jiffies(500));
-}
-
-static irqreturn_t dsmg600_reset_handler(int irq, void *dev_id)
-{
- /* This is the paper-clip reset, it shuts the machine down directly. */
- machine_power_off();
-
- return IRQ_HANDLED;
-}
-
-static void __init dsmg600_timer_init(void)
-{
- /* The xtal on this machine is non-standard. */
- ixp4xx_timer_freq = DSMG600_FREQ;
-
- /* Call standard timer_init function. */
- ixp4xx_timer_init();
-}
-
-static int __init dsmg600_gpio_init(void)
-{
- if (!machine_is_dsmg600())
- return 0;
-
- gpio_request(DSMG600_RB_GPIO, "reset button");
- if (request_irq(gpio_to_irq(DSMG600_RB_GPIO), &dsmg600_reset_handler,
- IRQF_TRIGGER_LOW, "DSM-G600 reset button", NULL) < 0) {
-
- printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
- gpio_to_irq(DSMG600_RB_GPIO));
- }
-
- /*
- * The power button on the D-Link DSM-G600 is on GPIO 15, but
- * it cannot handle interrupts on that GPIO line. So we'll
- * have to poll it with a kernel timer.
- */
-
- /* Make sure that the power button GPIO is set up as an input */
- gpio_request(DSMG600_PB_GPIO, "power button");
- gpio_direction_input(DSMG600_PB_GPIO);
- /* Request poweroff GPIO line */
- gpio_request(DSMG600_PO_GPIO, "power off button");
-
- /* Set the initial value for the power button IRQ handler */
- power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
-
- mod_timer(&dsmg600_power_timer, jiffies + msecs_to_jiffies(500));
- return 0;
-}
-device_initcall(dsmg600_gpio_init);
-
-static void __init dsmg600_init(void)
-{
- ixp4xx_sys_init();
-
- dsmg600_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
- dsmg600_flash_resource.end =
- IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
-
- gpiod_add_lookup_table(&dsmg600_i2c_gpiod_table);
- i2c_register_board_info(0, dsmg600_i2c_board_info,
- ARRAY_SIZE(dsmg600_i2c_board_info));
-
- /* The UART is required on the DSM-G600 (Redboot cannot use the
- * NIC) -- do it here so that it does *not* get removed if
- * platform_add_devices fails!
- */
- (void)platform_device_register(&dsmg600_uart);
-
- platform_add_devices(dsmg600_devices, ARRAY_SIZE(dsmg600_devices));
-
- pm_power_off = dsmg600_power_off;
-}
-
-MACHINE_START(DSMG600, "D-Link DSM-G600 RevA")
- /* Maintainer: www.nslu2-linux.org */
- .atag_offset = 0x100,
- .map_io = ixp4xx_map_io,
- .init_early = ixp4xx_init_early,
- .init_irq = ixp4xx_init_irq,
- .init_time = dsmg600_timer_init,
- .init_machine = dsmg600_init,
-#if defined(CONFIG_PCI)
- .dma_zone_size = SZ_64M,
-#endif
- .restart = ixp4xx_restart,
-MACHINE_END
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