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-rw-r--r--arch/arm/mach-ixp4xx/Kconfig9
-rw-r--r--arch/arm/mach-ixp4xx/Makefile2
-rw-r--r--arch/arm/mach-ixp4xx/dsmg600-pci.c74
-rw-r--r--arch/arm/mach-ixp4xx/dsmg600-power.c125
-rw-r--r--arch/arm/mach-ixp4xx/dsmg600-setup.c175
5 files changed, 385 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp4xx/Kconfig b/arch/arm/mach-ixp4xx/Kconfig
index dd0fb7239a80..9715ef506c24 100644
--- a/arch/arm/mach-ixp4xx/Kconfig
+++ b/arch/arm/mach-ixp4xx/Kconfig
@@ -95,6 +95,15 @@ config MACH_NAS100D
95 NAS 100d device. For more information on this platform, 95 NAS 100d device. For more information on this platform,
96 see http://www.nslu2-linux.org/wiki/NAS100d/HomePage 96 see http://www.nslu2-linux.org/wiki/NAS100d/HomePage
97 97
98config MACH_DSMG600
99 bool
100 prompt "D-Link DSM-G600 RevA"
101 select PCI
102 help
103 Say 'Y' here if you want your kernel to support D-Link's
104 DSM-G600 RevA device. For more information on this platform,
105 see http://www.nslu2-linux.org/wiki/DSMG600/HomePage
106
98# 107#
99# Avila and IXDP share the same source for now. Will change in future 108# Avila and IXDP share the same source for now. Will change in future
100# 109#
diff --git a/arch/arm/mach-ixp4xx/Makefile b/arch/arm/mach-ixp4xx/Makefile
index 746e297284ed..3b87c47e06cf 100644
--- a/arch/arm/mach-ixp4xx/Makefile
+++ b/arch/arm/mach-ixp4xx/Makefile
@@ -12,6 +12,7 @@ obj-pci-$(CONFIG_ARCH_ADI_COYOTE) += coyote-pci.o
12obj-pci-$(CONFIG_MACH_GTWX5715) += gtwx5715-pci.o 12obj-pci-$(CONFIG_MACH_GTWX5715) += gtwx5715-pci.o
13obj-pci-$(CONFIG_MACH_NSLU2) += nslu2-pci.o 13obj-pci-$(CONFIG_MACH_NSLU2) += nslu2-pci.o
14obj-pci-$(CONFIG_MACH_NAS100D) += nas100d-pci.o 14obj-pci-$(CONFIG_MACH_NAS100D) += nas100d-pci.o
15obj-pci-$(CONFIG_MACH_DSMG600) += dsmg600-pci.o
15 16
16obj-y += common.o 17obj-y += common.o
17 18
@@ -22,5 +23,6 @@ obj-$(CONFIG_ARCH_ADI_COYOTE) += coyote-setup.o
22obj-$(CONFIG_MACH_GTWX5715) += gtwx5715-setup.o 23obj-$(CONFIG_MACH_GTWX5715) += gtwx5715-setup.o
23obj-$(CONFIG_MACH_NSLU2) += nslu2-setup.o nslu2-power.o 24obj-$(CONFIG_MACH_NSLU2) += nslu2-setup.o nslu2-power.o
24obj-$(CONFIG_MACH_NAS100D) += nas100d-setup.o nas100d-power.o 25obj-$(CONFIG_MACH_NAS100D) += nas100d-setup.o nas100d-power.o
26obj-$(CONFIG_MACH_DSMG600) += dsmg600-setup.o dsmg600-power.o
25 27
26obj-$(CONFIG_PCI) += $(obj-pci-$(CONFIG_PCI)) common-pci.o 28obj-$(CONFIG_PCI) += $(obj-pci-$(CONFIG_PCI)) common-pci.o
diff --git a/arch/arm/mach-ixp4xx/dsmg600-pci.c b/arch/arm/mach-ixp4xx/dsmg600-pci.c
new file mode 100644
index 000000000000..9db7e1f42011
--- /dev/null
+++ b/arch/arm/mach-ixp4xx/dsmg600-pci.c
@@ -0,0 +1,74 @@
1/*
2 * DSM-G600 board-level PCI initialization
3 *
4 * Copyright (C) 2006 Tower Technologies
5 * Author: Alessandro Zummo <a.zummo@towertech.it>
6 *
7 * based on ixdp425-pci.c:
8 * Copyright (C) 2002 Intel Corporation.
9 * Copyright (C) 2003-2004 MontaVista Software, Inc.
10 *
11 * Maintainer: http://www.nslu2-linux.org/
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2 as
15 * published by the Free Software Foundation.
16 *
17 */
18
19#include <linux/pci.h>
20#include <linux/init.h>
21#include <linux/irq.h>
22
23#include <asm/mach/pci.h>
24#include <asm/mach-types.h>
25
26void __init dsmg600_pci_preinit(void)
27{
28 set_irq_type(IRQ_DSMG600_PCI_INTA, IRQT_LOW);
29 set_irq_type(IRQ_DSMG600_PCI_INTB, IRQT_LOW);
30 set_irq_type(IRQ_DSMG600_PCI_INTC, IRQT_LOW);
31 set_irq_type(IRQ_DSMG600_PCI_INTD, IRQT_LOW);
32 set_irq_type(IRQ_DSMG600_PCI_INTE, IRQT_LOW);
33 set_irq_type(IRQ_DSMG600_PCI_INTF, IRQT_LOW);
34
35 ixp4xx_pci_preinit();
36}
37
38static int __init dsmg600_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
39{
40 static int pci_irq_table[DSMG600_PCI_MAX_DEV][DSMG600_PCI_IRQ_LINES] =
41 {
42 { IRQ_DSMG600_PCI_INTE, -1, -1 },
43 { IRQ_DSMG600_PCI_INTA, -1, -1 },
44 { IRQ_DSMG600_PCI_INTB, IRQ_DSMG600_PCI_INTC, IRQ_DSMG600_PCI_INTD },
45 { IRQ_DSMG600_PCI_INTF, -1, -1 },
46 };
47
48 int irq = -1;
49
50 if (slot >= 1 && slot <= DSMG600_PCI_MAX_DEV &&
51 pin >= 1 && pin <= DSMG600_PCI_IRQ_LINES)
52 irq = pci_irq_table[slot-1][pin-1];
53
54 return irq;
55}
56
57struct hw_pci __initdata dsmg600_pci = {
58 .nr_controllers = 1,
59 .preinit = dsmg600_pci_preinit,
60 .swizzle = pci_std_swizzle,
61 .setup = ixp4xx_setup,
62 .scan = ixp4xx_scan_bus,
63 .map_irq = dsmg600_map_irq,
64};
65
66int __init dsmg600_pci_init(void)
67{
68 if (machine_is_dsmg600())
69 pci_common_init(&dsmg600_pci);
70
71 return 0;
72}
73
74subsys_initcall(dsmg600_pci_init);
diff --git a/arch/arm/mach-ixp4xx/dsmg600-power.c b/arch/arm/mach-ixp4xx/dsmg600-power.c
new file mode 100644
index 000000000000..34717872d076
--- /dev/null
+++ b/arch/arm/mach-ixp4xx/dsmg600-power.c
@@ -0,0 +1,125 @@
1/*
2 * arch/arm/mach-ixp4xx/dsmg600-power.c
3 *
4 * DSM-G600 Power/Reset driver
5 * Author: Michael Westerhof <mwester@dls.net>
6 *
7 * Based on nslu2-power.c
8 * Copyright (C) 2005 Tower Technologies
9 * Author: Alessandro Zummo <a.zummo@towertech.it>
10 *
11 * which was based on nslu2-io.c
12 * Copyright (C) 2004 Karen Spearel
13 *
14 * Maintainers: http://www.nslu2-linux.org/
15 *
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License version 2 as
18 * published by the Free Software Foundation.
19 *
20 */
21
22#include <linux/module.h>
23#include <linux/reboot.h>
24#include <linux/interrupt.h>
25#include <linux/irq.h>
26#include <linux/jiffies.h>
27#include <linux/timer.h>
28
29#include <asm/mach-types.h>
30
31extern void ctrl_alt_del(void);
32
33/* This is used to make sure the power-button pusher is serious. The button
34 * must be held until the value of this counter reaches zero.
35 */
36static volatile int power_button_countdown;
37
38/* Must hold the button down for at least this many counts to be processed */
39#define PBUTTON_HOLDDOWN_COUNT 4 /* 2 secs */
40
41static void dsmg600_power_handler(unsigned long data);
42static DEFINE_TIMER(dsmg600_power_timer, dsmg600_power_handler, 0, 0);
43
44static void dsmg600_power_handler(unsigned long data)
45{
46 /* This routine is called twice per second to check the
47 * state of the power button.
48 */
49
50 if (*IXP4XX_GPIO_GPINR & DSMG600_PB_BM) {
51
52 /* IO Pin is 1 (button pushed) */
53 if (power_button_countdown == 0) {
54 /* Signal init to do the ctrlaltdel action, this will bypass
55 * init if it hasn't started and do a kernel_restart.
56 */
57 ctrl_alt_del();
58
59 /* Change the state of the power LED to "blink" */
60 gpio_line_set(DSMG600_LED_PWR_GPIO, IXP4XX_GPIO_LOW);
61 }
62 power_button_countdown--;
63
64 } else {
65 power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
66 }
67
68 mod_timer(&dsmg600_power_timer, jiffies + msecs_to_jiffies(500));
69}
70
71static irqreturn_t dsmg600_reset_handler(int irq, void *dev_id)
72{
73 /* This is the paper-clip reset, it shuts the machine down directly. */
74 machine_power_off();
75
76 return IRQ_HANDLED;
77}
78
79static int __init dsmg600_power_init(void)
80{
81 if (!(machine_is_dsmg600()))
82 return 0;
83
84 if (request_irq(DSMG600_RB_IRQ, &dsmg600_reset_handler,
85 IRQF_DISABLED | IRQF_TRIGGER_LOW, "DSM-G600 reset button",
86 NULL) < 0) {
87
88 printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
89 DSMG600_RB_IRQ);
90
91 return -EIO;
92 }
93
94 /* The power button on the D-Link DSM-G600 is on GPIO 15, but
95 * it cannot handle interrupts on that GPIO line. So we'll
96 * have to poll it with a kernel timer.
97 */
98
99 /* Make sure that the power button GPIO is set up as an input */
100 gpio_line_config(DSMG600_PB_GPIO, IXP4XX_GPIO_IN);
101
102 /* Set the initial value for the power button IRQ handler */
103 power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
104
105 mod_timer(&dsmg600_power_timer, jiffies + msecs_to_jiffies(500));
106
107 return 0;
108}
109
110static void __exit dsmg600_power_exit(void)
111{
112 if (!(machine_is_dsmg600()))
113 return;
114
115 del_timer_sync(&dsmg600_power_timer);
116
117 free_irq(DSMG600_RB_IRQ, NULL);
118}
119
120module_init(dsmg600_power_init);
121module_exit(dsmg600_power_exit);
122
123MODULE_AUTHOR("Michael Westerhof <mwester@dls.net>");
124MODULE_DESCRIPTION("DSM-G600 Power/Reset driver");
125MODULE_LICENSE("GPL");
diff --git a/arch/arm/mach-ixp4xx/dsmg600-setup.c b/arch/arm/mach-ixp4xx/dsmg600-setup.c
new file mode 100644
index 000000000000..1caff65e22cc
--- /dev/null
+++ b/arch/arm/mach-ixp4xx/dsmg600-setup.c
@@ -0,0 +1,175 @@
1/*
2 * DSM-G600 board-setup
3 *
4 * Copyright (C) 2006 Tower Technologies
5 * Author: Alessandro Zummo <a.zummo@towertech.it>
6 *
7 * based ixdp425-setup.c:
8 * Copyright (C) 2003-2004 MontaVista Software, Inc.
9 *
10 * Author: Alessandro Zummo <a.zummo@towertech.it>
11 * Maintainers: http://www.nslu2-linux.org/
12 */
13
14#include <linux/kernel.h>
15#include <linux/serial.h>
16#include <linux/serial_8250.h>
17
18#include <asm/mach-types.h>
19#include <asm/mach/arch.h>
20#include <asm/mach/flash.h>
21
22static struct flash_platform_data dsmg600_flash_data = {
23 .map_name = "cfi_probe",
24 .width = 2,
25};
26
27static struct resource dsmg600_flash_resource = {
28 .flags = IORESOURCE_MEM,
29};
30
31static struct platform_device dsmg600_flash = {
32 .name = "IXP4XX-Flash",
33 .id = 0,
34 .dev.platform_data = &dsmg600_flash_data,
35 .num_resources = 1,
36 .resource = &dsmg600_flash_resource,
37};
38
39static struct ixp4xx_i2c_pins dsmg600_i2c_gpio_pins = {
40 .sda_pin = DSMG600_SDA_PIN,
41 .scl_pin = DSMG600_SCL_PIN,
42};
43
44static struct platform_device dsmg600_i2c_controller = {
45 .name = "IXP4XX-I2C",
46 .id = 0,
47 .dev.platform_data = &dsmg600_i2c_gpio_pins,
48};
49
50#ifdef CONFIG_LEDS_CLASS
51static struct resource dsmg600_led_resources[] = {
52 {
53 .name = "power",
54 .start = DSMG600_LED_PWR_GPIO,
55 .end = DSMG600_LED_PWR_GPIO,
56 .flags = IXP4XX_GPIO_HIGH,
57 },
58 {
59 .name = "wlan",
60 .start = DSMG600_LED_WLAN_GPIO,
61 .end = DSMG600_LED_WLAN_GPIO,
62 .flags = IXP4XX_GPIO_LOW,
63 },
64};
65
66static struct platform_device dsmg600_leds = {
67 .name = "IXP4XX-GPIO-LED",
68 .id = -1,
69 .num_resources = ARRAY_SIZE(dsmg600_led_resources),
70 .resource = dsmg600_led_resources,
71};
72#endif
73
74static struct resource dsmg600_uart_resources[] = {
75 {
76 .start = IXP4XX_UART1_BASE_PHYS,
77 .end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
78 .flags = IORESOURCE_MEM,
79 },
80 {
81 .start = IXP4XX_UART2_BASE_PHYS,
82 .end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
83 .flags = IORESOURCE_MEM,
84 }
85};
86
87static struct plat_serial8250_port dsmg600_uart_data[] = {
88 {
89 .mapbase = IXP4XX_UART1_BASE_PHYS,
90 .membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
91 .irq = IRQ_IXP4XX_UART1,
92 .flags = UPF_BOOT_AUTOCONF,
93 .iotype = UPIO_MEM,
94 .regshift = 2,
95 .uartclk = IXP4XX_UART_XTAL,
96 },
97 {
98 .mapbase = IXP4XX_UART2_BASE_PHYS,
99 .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
100 .irq = IRQ_IXP4XX_UART2,
101 .flags = UPF_BOOT_AUTOCONF,
102 .iotype = UPIO_MEM,
103 .regshift = 2,
104 .uartclk = IXP4XX_UART_XTAL,
105 },
106 { }
107};
108
109static struct platform_device dsmg600_uart = {
110 .name = "serial8250",
111 .id = PLAT8250_DEV_PLATFORM,
112 .dev.platform_data = dsmg600_uart_data,
113 .num_resources = ARRAY_SIZE(dsmg600_uart_resources),
114 .resource = dsmg600_uart_resources,
115};
116
117static struct platform_device *dsmg600_devices[] __initdata = {
118 &dsmg600_i2c_controller,
119 &dsmg600_flash,
120};
121
122static void dsmg600_power_off(void)
123{
124 /* enable the pwr cntl gpio */
125 gpio_line_config(DSMG600_PO_GPIO, IXP4XX_GPIO_OUT);
126
127 /* poweroff */
128 gpio_line_set(DSMG600_PO_GPIO, IXP4XX_GPIO_HIGH);
129}
130
131static void __init dsmg600_init(void)
132{
133 ixp4xx_sys_init();
134
135 /* Make sure that GPIO14 and GPIO15 are not used as clocks */
136 *IXP4XX_GPIO_GPCLKR = 0;
137
138 dsmg600_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
139 dsmg600_flash_resource.end =
140 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
141
142 pm_power_off = dsmg600_power_off;
143
144 /* The UART is required on the DSM-G600 (Redboot cannot use the
145 * NIC) -- do it here so that it does *not* get removed if
146 * platform_add_devices fails!
147 */
148 (void)platform_device_register(&dsmg600_uart);
149
150 platform_add_devices(dsmg600_devices, ARRAY_SIZE(dsmg600_devices));
151
152#ifdef CONFIG_LEDS_CLASS
153 /* We don't care whether or not this works. */
154 (void)platform_device_register(&dsmg600_leds);
155#endif
156}
157
158static void __init dsmg600_fixup(struct machine_desc *desc,
159 struct tag *tags, char **cmdline, struct meminfo *mi)
160{
161 /* The xtal on this machine is non-standard. */
162 ixp4xx_timer_freq = DSMG600_FREQ;
163}
164
165MACHINE_START(DSMG600, "D-Link DSM-G600 RevA")
166 /* Maintainer: www.nslu2-linux.org */
167 .phys_io = IXP4XX_PERIPHERAL_BASE_PHYS,
168 .io_pg_offst = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
169 .boot_params = 0x00000100,
170 .fixup = dsmg600_fixup,
171 .map_io = ixp4xx_map_io,
172 .init_irq = ixp4xx_init_irq,
173 .timer = &ixp4xx_timer,
174 .init_machine = dsmg600_init,
175MACHINE_END
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