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1 | /* |
2 | * arch/arm/mach-iop32x/n2100.c | |
3 | * | |
4 | * Board support code for the Thecus N2100 platform. | |
5 | * | |
6 | * Author: Rory Bolt <rorybolt@pacbell.net> | |
7 | * Copyright (C) 2002 Rory Bolt | |
8 | * Copyright 2003 (c) MontaVista, Software, Inc. | |
9 | * Copyright (C) 2004 Intel Corp. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
15 | */ | |
16 | ||
17 | #include <linux/mm.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/delay.h> | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/pci.h> | |
22 | #include <linux/pm.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/serial_core.h> | |
26 | #include <linux/serial_8250.h> | |
27 | #include <linux/mtd/physmap.h> | |
28 | #include <linux/platform_device.h> | |
29 | #include <linux/reboot.h> | |
30 | #include <asm/hardware.h> | |
31 | #include <asm/io.h> | |
32 | #include <asm/irq.h> | |
33 | #include <asm/mach/arch.h> | |
34 | #include <asm/mach/map.h> | |
35 | #include <asm/mach/pci.h> | |
36 | #include <asm/mach/time.h> | |
37 | #include <asm/mach-types.h> | |
38 | #include <asm/page.h> | |
39 | #include <asm/pgtable.h> | |
40 | ||
41 | /* | |
42 | * N2100 timer tick configuration. | |
43 | */ | |
44 | static void __init n2100_timer_init(void) | |
45 | { | |
46 | /* 33.000 MHz crystal. */ | |
47 | iop3xx_init_time(198000000); | |
48 | } | |
49 | ||
50 | static struct sys_timer n2100_timer = { | |
51 | .init = n2100_timer_init, | |
52 | .offset = iop3xx_gettimeoffset, | |
53 | }; | |
54 | ||
55 | ||
56 | /* | |
57 | * N2100 I/O. | |
58 | */ | |
59 | static struct map_desc n2100_io_desc[] __initdata = { | |
60 | { /* on-board devices */ | |
61 | .virtual = N2100_UART, | |
62 | .pfn = __phys_to_pfn(N2100_UART), | |
63 | .length = 0x00100000, | |
64 | .type = MT_DEVICE | |
65 | }, | |
66 | }; | |
67 | ||
68 | void __init n2100_map_io(void) | |
69 | { | |
70 | iop3xx_map_io(); | |
71 | iotable_init(n2100_io_desc, ARRAY_SIZE(n2100_io_desc)); | |
72 | } | |
73 | ||
74 | ||
75 | /* | |
76 | * N2100 PCI. | |
77 | */ | |
78 | static inline int __init | |
79 | n2100_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin) | |
80 | { | |
81 | int irq; | |
82 | ||
83 | if (PCI_SLOT(dev->devfn) == 1) { | |
84 | /* RTL8110SB #1 */ | |
85 | irq = IRQ_IOP32X_XINT0; | |
86 | } else if (PCI_SLOT(dev->devfn) == 2) { | |
87 | /* RTL8110SB #2 */ | |
811c9a4b | 88 | irq = IRQ_IOP32X_XINT3; |
e60d07b6 LB |
89 | } else if (PCI_SLOT(dev->devfn) == 3) { |
90 | /* Sil3512 */ | |
91 | irq = IRQ_IOP32X_XINT2; | |
92 | } else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) { | |
93 | /* VT6212 INTA */ | |
94 | irq = IRQ_IOP32X_XINT1; | |
95 | } else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) { | |
96 | /* VT6212 INTB */ | |
97 | irq = IRQ_IOP32X_XINT0; | |
98 | } else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) { | |
99 | /* VT6212 INTC */ | |
100 | irq = IRQ_IOP32X_XINT2; | |
101 | } else if (PCI_SLOT(dev->devfn) == 5) { | |
102 | /* Mini-PCI slot */ | |
103 | irq = IRQ_IOP32X_XINT3; | |
104 | } else { | |
105 | printk(KERN_ERR "n2100_pci_map_irq() called for unknown " | |
106 | "device PCI:%d:%d:%d\n", dev->bus->number, | |
107 | PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)); | |
108 | irq = -1; | |
109 | } | |
110 | ||
111 | return irq; | |
112 | } | |
113 | ||
114 | static struct hw_pci n2100_pci __initdata = { | |
115 | .swizzle = pci_std_swizzle, | |
116 | .nr_controllers = 1, | |
117 | .setup = iop3xx_pci_setup, | |
118 | .preinit = iop3xx_pci_preinit, | |
119 | .scan = iop3xx_pci_scan_bus, | |
120 | .map_irq = n2100_pci_map_irq, | |
121 | }; | |
122 | ||
123 | static int __init n2100_pci_init(void) | |
124 | { | |
125 | if (machine_is_n2100()) | |
126 | pci_common_init(&n2100_pci); | |
127 | ||
128 | return 0; | |
129 | } | |
130 | ||
131 | subsys_initcall(n2100_pci_init); | |
132 | ||
133 | ||
134 | /* | |
135 | * N2100 machine initialisation. | |
136 | */ | |
137 | static struct physmap_flash_data n2100_flash_data = { | |
138 | .width = 2, | |
139 | }; | |
140 | ||
141 | static struct resource n2100_flash_resource = { | |
142 | .start = 0xf0000000, | |
143 | .end = 0xf0ffffff, | |
144 | .flags = IORESOURCE_MEM, | |
145 | }; | |
146 | ||
147 | static struct platform_device n2100_flash_device = { | |
148 | .name = "physmap-flash", | |
149 | .id = 0, | |
150 | .dev = { | |
151 | .platform_data = &n2100_flash_data, | |
152 | }, | |
153 | .num_resources = 1, | |
154 | .resource = &n2100_flash_resource, | |
155 | }; | |
156 | ||
157 | ||
158 | static struct plat_serial8250_port n2100_serial_port[] = { | |
159 | { | |
160 | .mapbase = N2100_UART, | |
161 | .membase = (char *)N2100_UART, | |
162 | .irq = 0, | |
163 | .flags = UPF_SKIP_TEST, | |
164 | .iotype = UPIO_MEM, | |
165 | .regshift = 0, | |
166 | .uartclk = 1843200, | |
167 | }, | |
168 | { }, | |
169 | }; | |
170 | ||
171 | static struct resource n2100_uart_resource = { | |
172 | .start = N2100_UART, | |
173 | .end = N2100_UART + 7, | |
174 | .flags = IORESOURCE_MEM, | |
175 | }; | |
176 | ||
177 | static struct platform_device n2100_serial_device = { | |
178 | .name = "serial8250", | |
179 | .id = PLAT8250_DEV_PLATFORM, | |
180 | .dev = { | |
181 | .platform_data = n2100_serial_port, | |
182 | }, | |
183 | .num_resources = 1, | |
184 | .resource = &n2100_uart_resource, | |
185 | }; | |
186 | ||
187 | ||
188 | /* | |
189 | * Pull PCA9532 GPIO #8 low to power off the machine. | |
190 | */ | |
191 | static void n2100_power_off(void) | |
192 | { | |
193 | local_irq_disable(); | |
194 | ||
195 | /* Start condition, I2C address of PCA9532, write transaction. */ | |
196 | *IOP3XX_IDBR0 = 0xc0; | |
197 | *IOP3XX_ICR0 = 0xe9; | |
198 | mdelay(1); | |
199 | ||
200 | /* Write address 0x08. */ | |
201 | *IOP3XX_IDBR0 = 0x08; | |
202 | *IOP3XX_ICR0 = 0xe8; | |
203 | mdelay(1); | |
204 | ||
205 | /* Write data 0x01, stop condition. */ | |
206 | *IOP3XX_IDBR0 = 0x01; | |
207 | *IOP3XX_ICR0 = 0xea; | |
208 | ||
209 | while (1) | |
210 | ; | |
211 | } | |
212 | ||
213 | ||
214 | static struct timer_list power_button_poll_timer; | |
215 | ||
216 | static void power_button_poll(unsigned long dummy) | |
217 | { | |
218 | if (gpio_line_get(N2100_POWER_BUTTON) == 0) { | |
219 | ctrl_alt_del(); | |
220 | return; | |
221 | } | |
222 | ||
223 | power_button_poll_timer.expires = jiffies + (HZ / 10); | |
224 | add_timer(&power_button_poll_timer); | |
225 | } | |
226 | ||
227 | ||
228 | static void __init n2100_init_machine(void) | |
229 | { | |
230 | platform_device_register(&iop3xx_i2c0_device); | |
231 | platform_device_register(&n2100_flash_device); | |
232 | platform_device_register(&n2100_serial_device); | |
233 | ||
234 | pm_power_off = n2100_power_off; | |
235 | ||
236 | init_timer(&power_button_poll_timer); | |
237 | power_button_poll_timer.function = power_button_poll; | |
238 | power_button_poll_timer.expires = jiffies + (HZ / 10); | |
239 | add_timer(&power_button_poll_timer); | |
240 | } | |
241 | ||
242 | MACHINE_START(N2100, "Thecus N2100") | |
243 | /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ | |
244 | .phys_io = N2100_UART, | |
245 | .io_pg_offst = ((N2100_UART) >> 18) & 0xfffc, | |
246 | .boot_params = 0xa0000100, | |
247 | .map_io = n2100_map_io, | |
248 | .init_irq = iop32x_init_irq, | |
249 | .timer = &n2100_timer, | |
250 | .init_machine = n2100_init_machine, | |
251 | MACHINE_END |