Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * arch/arm/mach-ixp4xx/nslu2-setup.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * NSLU2 board-setup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  * based on ixdp425-setup.c:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  *      Copyright (C) 2003-2004 MontaVista Software, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * based on nslu2-power.c:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  *	Copyright (C) 2005 Tower Technologies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  * Author: Mark Rakes <mrakes at mac.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  * Author: Rod Whitby <rod@whitby.id.au>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  * Author: Alessandro Zummo <a.zummo@towertech.it>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17)  * Maintainers: http://www.nslu2-linux.org/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/if_ether.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/serial.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <linux/serial_8250.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <linux/leds.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include <linux/reboot.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #include <linux/gpio/machine.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #include <asm/mach-types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #include <asm/mach/arch.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #include <asm/mach/flash.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #include <asm/mach/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #include "irqs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #define NSLU2_SDA_PIN		7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #define NSLU2_SCL_PIN		6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) /* NSLU2 Timer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #define NSLU2_FREQ 66000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) /* Buttons */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #define NSLU2_PB_GPIO		5	/* power button */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) #define NSLU2_PO_GPIO		8	/* power off */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) #define NSLU2_RB_GPIO		12	/* reset button */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) /* Buzzer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) #define NSLU2_GPIO_BUZZ		4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) /* LEDs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) #define NSLU2_LED_RED_GPIO	0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) #define NSLU2_LED_GRN_GPIO	1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) #define NSLU2_LED_DISK1_GPIO	3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) #define NSLU2_LED_DISK2_GPIO	2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) static struct flash_platform_data nslu2_flash_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	.map_name		= "cfi_probe",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	.width			= 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) static struct resource nslu2_flash_resource = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	.flags			= IORESOURCE_MEM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) static struct platform_device nslu2_flash = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	.name			= "IXP4XX-Flash",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	.id			= 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	.dev.platform_data	= &nslu2_flash_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	.num_resources		= 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	.resource		= &nslu2_flash_resource,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) static struct gpiod_lookup_table nslu2_i2c_gpiod_table = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	.dev_id		= "i2c-gpio.0",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	.table		= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", NSLU2_SDA_PIN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 				NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", NSLU2_SCL_PIN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 				NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) static struct i2c_board_info __initdata nslu2_i2c_board_info [] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		I2C_BOARD_INFO("x1205", 0x6f),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) static struct gpio_led nslu2_led_pins[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		.name		= "nslu2:green:ready",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		.gpio		= NSLU2_LED_GRN_GPIO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 		.name		= "nslu2:red:status",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		.gpio		= NSLU2_LED_RED_GPIO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		.name		= "nslu2:green:disk-1",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 		.gpio		= NSLU2_LED_DISK1_GPIO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 		.active_low	= true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 		.name		= "nslu2:green:disk-2",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		.gpio		= NSLU2_LED_DISK2_GPIO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 		.active_low	= true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) static struct gpio_led_platform_data nslu2_led_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	.num_leds		= ARRAY_SIZE(nslu2_led_pins),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	.leds			= nslu2_led_pins,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) static struct platform_device nslu2_leds = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	.name			= "leds-gpio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	.id			= -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	.dev.platform_data	= &nslu2_led_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static struct platform_device nslu2_i2c_gpio = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	.name			= "i2c-gpio",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	.id			= 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	.dev	 = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		.platform_data	= NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static struct resource nslu2_beeper_resources[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		.start	= IRQ_IXP4XX_TIMER2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 		.flags	= IORESOURCE_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) static struct platform_device nslu2_beeper = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	.name			= "ixp4xx-beeper",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	.id			= NSLU2_GPIO_BUZZ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	.resource		= nslu2_beeper_resources,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	.num_resources		= ARRAY_SIZE(nslu2_beeper_resources),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) static struct resource nslu2_uart_resources[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 		.start		= IXP4XX_UART1_BASE_PHYS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 		.end		= IXP4XX_UART1_BASE_PHYS + 0x0fff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		.flags		= IORESOURCE_MEM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		.start		= IXP4XX_UART2_BASE_PHYS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		.end		= IXP4XX_UART2_BASE_PHYS + 0x0fff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		.flags		= IORESOURCE_MEM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static struct plat_serial8250_port nslu2_uart_data[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		.mapbase	= IXP4XX_UART1_BASE_PHYS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		.membase	= (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		.irq		= IRQ_IXP4XX_UART1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		.flags		= UPF_BOOT_AUTOCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		.iotype		= UPIO_MEM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		.regshift	= 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		.uartclk	= IXP4XX_UART_XTAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		.mapbase	= IXP4XX_UART2_BASE_PHYS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		.membase	= (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		.irq		= IRQ_IXP4XX_UART2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		.flags		= UPF_BOOT_AUTOCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		.iotype		= UPIO_MEM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		.regshift	= 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		.uartclk	= IXP4XX_UART_XTAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static struct platform_device nslu2_uart = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	.name			= "serial8250",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	.id			= PLAT8250_DEV_PLATFORM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	.dev.platform_data	= nslu2_uart_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	.num_resources		= 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	.resource		= nslu2_uart_resources,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) /* Built-in 10/100 Ethernet MAC interfaces */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) static struct resource nslu2_eth_resources[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		.start		= IXP4XX_EthB_BASE_PHYS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		.end		= IXP4XX_EthB_BASE_PHYS + 0x0fff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		.flags		= IORESOURCE_MEM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) static struct eth_plat_info nslu2_plat_eth[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		.phy		= 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		.rxq		= 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		.txreadyq	= 20,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) static struct platform_device nslu2_eth[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		.name			= "ixp4xx_eth",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		.id			= IXP4XX_ETH_NPEB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 		.dev.platform_data	= nslu2_plat_eth,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 		.num_resources		= ARRAY_SIZE(nslu2_eth_resources),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 		.resource		= nslu2_eth_resources,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) static struct platform_device *nslu2_devices[] __initdata = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	&nslu2_i2c_gpio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	&nslu2_flash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	&nslu2_beeper,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	&nslu2_leds,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	&nslu2_eth[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) static void nslu2_power_off(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	/* This causes the box to drop the power and go dead. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	/* enable the pwr cntl gpio and assert power off */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	gpio_direction_output(NSLU2_PO_GPIO, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) static irqreturn_t nslu2_power_handler(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	/* Signal init to do the ctrlaltdel action, this will bypass init if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	 * it hasn't started and do a kernel_restart.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	ctrl_alt_del();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) static irqreturn_t nslu2_reset_handler(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	/* This is the paper-clip reset, it shuts the machine down directly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	machine_power_off();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) static int __init nslu2_gpio_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	if (!machine_is_nslu2())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	/* Request the power off GPIO */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	return gpio_request(NSLU2_PO_GPIO, "power off");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) device_initcall(nslu2_gpio_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) static void __init nslu2_timer_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)     /* The xtal on this machine is non-standard. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)     ixp4xx_timer_freq = NSLU2_FREQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)     /* Call standard timer_init function. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)     ixp4xx_timer_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) static void __init nslu2_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	uint8_t __iomem *f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	ixp4xx_sys_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	nslu2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	nslu2_flash_resource.end =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 		IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	gpiod_add_lookup_table(&nslu2_i2c_gpiod_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	i2c_register_board_info(0, nslu2_i2c_board_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 				ARRAY_SIZE(nslu2_i2c_board_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	 * This is only useful on a modified machine, but it is valuable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	 * to have it first in order to see debug messages, and so that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	 * it does *not* get removed if platform_add_devices fails!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	(void)platform_device_register(&nslu2_uart);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	platform_add_devices(nslu2_devices, ARRAY_SIZE(nslu2_devices));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	pm_power_off = nslu2_power_off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	if (request_irq(gpio_to_irq(NSLU2_RB_GPIO), &nslu2_reset_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 		IRQF_TRIGGER_LOW, "NSLU2 reset button", NULL) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 		printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 			gpio_to_irq(NSLU2_RB_GPIO));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	if (request_irq(gpio_to_irq(NSLU2_PB_GPIO), &nslu2_power_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 		IRQF_TRIGGER_HIGH, "NSLU2 power button", NULL) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 		printk(KERN_DEBUG "Power Button IRQ %d not available\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 			gpio_to_irq(NSLU2_PB_GPIO));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	 * Map in a portion of the flash and read the MAC address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	 * Since it is stored in BE in the flash itself, we need to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	 * byteswap it if we're in LE mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	f = ioremap(IXP4XX_EXP_BUS_BASE(0), 0x40000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	if (f) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 		for (i = 0; i < 6; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) #ifdef __ARMEB__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 			nslu2_plat_eth[0].hwaddr[i] = readb(f + 0x3FFB0 + i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 			nslu2_plat_eth[0].hwaddr[i] = readb(f + 0x3FFB0 + (i^3));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 		iounmap(f);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	printk(KERN_INFO "NSLU2: Using MAC address %pM for port 0\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 	       nslu2_plat_eth[0].hwaddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) MACHINE_START(NSLU2, "Linksys NSLU2")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	/* Maintainer: www.nslu2-linux.org */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	.atag_offset	= 0x100,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	.map_io		= ixp4xx_map_io,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	.init_early	= ixp4xx_init_early,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	.init_irq	= ixp4xx_init_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	.init_time	= nslu2_timer_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	.init_machine	= nslu2_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) #if defined(CONFIG_PCI)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	.dma_zone_size	= SZ_64M,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	.restart	= ixp4xx_restart,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) MACHINE_END