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e60d07b6 LB |
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> | |
3668b45d | 40 | #include <asm/arch/time.h> |
e60d07b6 LB |
41 | |
42 | /* | |
43 | * N2100 timer tick configuration. | |
44 | */ | |
45 | static void __init n2100_timer_init(void) | |
46 | { | |
47 | /* 33.000 MHz crystal. */ | |
3668b45d | 48 | iop_init_time(198000000); |
e60d07b6 LB |
49 | } |
50 | ||
51 | static struct sys_timer n2100_timer = { | |
52 | .init = n2100_timer_init, | |
3668b45d | 53 | .offset = iop_gettimeoffset, |
e60d07b6 LB |
54 | }; |
55 | ||
56 | ||
57 | /* | |
58 | * N2100 I/O. | |
59 | */ | |
60 | static struct map_desc n2100_io_desc[] __initdata = { | |
61 | { /* on-board devices */ | |
62 | .virtual = N2100_UART, | |
63 | .pfn = __phys_to_pfn(N2100_UART), | |
64 | .length = 0x00100000, | |
65 | .type = MT_DEVICE | |
66 | }, | |
67 | }; | |
68 | ||
69 | void __init n2100_map_io(void) | |
70 | { | |
71 | iop3xx_map_io(); | |
72 | iotable_init(n2100_io_desc, ARRAY_SIZE(n2100_io_desc)); | |
73 | } | |
74 | ||
75 | ||
76 | /* | |
77 | * N2100 PCI. | |
78 | */ | |
d73d8011 | 79 | static int __init |
e60d07b6 LB |
80 | n2100_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin) |
81 | { | |
82 | int irq; | |
83 | ||
84 | if (PCI_SLOT(dev->devfn) == 1) { | |
85 | /* RTL8110SB #1 */ | |
86 | irq = IRQ_IOP32X_XINT0; | |
87 | } else if (PCI_SLOT(dev->devfn) == 2) { | |
88 | /* RTL8110SB #2 */ | |
811c9a4b | 89 | irq = IRQ_IOP32X_XINT3; |
e60d07b6 LB |
90 | } else if (PCI_SLOT(dev->devfn) == 3) { |
91 | /* Sil3512 */ | |
92 | irq = IRQ_IOP32X_XINT2; | |
93 | } else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) { | |
94 | /* VT6212 INTA */ | |
95 | irq = IRQ_IOP32X_XINT1; | |
96 | } else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) { | |
97 | /* VT6212 INTB */ | |
98 | irq = IRQ_IOP32X_XINT0; | |
99 | } else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) { | |
100 | /* VT6212 INTC */ | |
101 | irq = IRQ_IOP32X_XINT2; | |
102 | } else if (PCI_SLOT(dev->devfn) == 5) { | |
103 | /* Mini-PCI slot */ | |
104 | irq = IRQ_IOP32X_XINT3; | |
105 | } else { | |
106 | printk(KERN_ERR "n2100_pci_map_irq() called for unknown " | |
107 | "device PCI:%d:%d:%d\n", dev->bus->number, | |
108 | PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)); | |
109 | irq = -1; | |
110 | } | |
111 | ||
112 | return irq; | |
113 | } | |
114 | ||
115 | static struct hw_pci n2100_pci __initdata = { | |
116 | .swizzle = pci_std_swizzle, | |
117 | .nr_controllers = 1, | |
118 | .setup = iop3xx_pci_setup, | |
119 | .preinit = iop3xx_pci_preinit, | |
120 | .scan = iop3xx_pci_scan_bus, | |
121 | .map_irq = n2100_pci_map_irq, | |
122 | }; | |
123 | ||
66822b2e LB |
124 | /* |
125 | * Both r8169 chips on the n2100 exhibit PCI parity problems. Set | |
126 | * the ->broken_parity_status flag for both ports so that the r8169 | |
127 | * driver knows it should ignore error interrupts. | |
128 | */ | |
129 | static void n2100_fixup_r8169(struct pci_dev *dev) | |
130 | { | |
131 | if (dev->bus->number == 0 && | |
132 | (dev->devfn == PCI_DEVFN(1, 0) || | |
133 | dev->devfn == PCI_DEVFN(2, 0))) | |
134 | dev->broken_parity_status = 1; | |
135 | } | |
136 | DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169); | |
137 | ||
e60d07b6 LB |
138 | static int __init n2100_pci_init(void) |
139 | { | |
140 | if (machine_is_n2100()) | |
141 | pci_common_init(&n2100_pci); | |
142 | ||
143 | return 0; | |
144 | } | |
145 | ||
146 | subsys_initcall(n2100_pci_init); | |
147 | ||
148 | ||
149 | /* | |
150 | * N2100 machine initialisation. | |
151 | */ | |
152 | static struct physmap_flash_data n2100_flash_data = { | |
153 | .width = 2, | |
154 | }; | |
155 | ||
156 | static struct resource n2100_flash_resource = { | |
157 | .start = 0xf0000000, | |
158 | .end = 0xf0ffffff, | |
159 | .flags = IORESOURCE_MEM, | |
160 | }; | |
161 | ||
162 | static struct platform_device n2100_flash_device = { | |
163 | .name = "physmap-flash", | |
164 | .id = 0, | |
165 | .dev = { | |
166 | .platform_data = &n2100_flash_data, | |
167 | }, | |
168 | .num_resources = 1, | |
169 | .resource = &n2100_flash_resource, | |
170 | }; | |
171 | ||
172 | ||
173 | static struct plat_serial8250_port n2100_serial_port[] = { | |
174 | { | |
175 | .mapbase = N2100_UART, | |
176 | .membase = (char *)N2100_UART, | |
177 | .irq = 0, | |
178 | .flags = UPF_SKIP_TEST, | |
179 | .iotype = UPIO_MEM, | |
180 | .regshift = 0, | |
181 | .uartclk = 1843200, | |
182 | }, | |
183 | { }, | |
184 | }; | |
185 | ||
186 | static struct resource n2100_uart_resource = { | |
187 | .start = N2100_UART, | |
188 | .end = N2100_UART + 7, | |
189 | .flags = IORESOURCE_MEM, | |
190 | }; | |
191 | ||
192 | static struct platform_device n2100_serial_device = { | |
193 | .name = "serial8250", | |
194 | .id = PLAT8250_DEV_PLATFORM, | |
195 | .dev = { | |
196 | .platform_data = n2100_serial_port, | |
197 | }, | |
198 | .num_resources = 1, | |
199 | .resource = &n2100_uart_resource, | |
200 | }; | |
201 | ||
202 | ||
203 | /* | |
204 | * Pull PCA9532 GPIO #8 low to power off the machine. | |
205 | */ | |
206 | static void n2100_power_off(void) | |
207 | { | |
208 | local_irq_disable(); | |
209 | ||
210 | /* Start condition, I2C address of PCA9532, write transaction. */ | |
211 | *IOP3XX_IDBR0 = 0xc0; | |
212 | *IOP3XX_ICR0 = 0xe9; | |
213 | mdelay(1); | |
214 | ||
215 | /* Write address 0x08. */ | |
216 | *IOP3XX_IDBR0 = 0x08; | |
217 | *IOP3XX_ICR0 = 0xe8; | |
218 | mdelay(1); | |
219 | ||
220 | /* Write data 0x01, stop condition. */ | |
221 | *IOP3XX_IDBR0 = 0x01; | |
222 | *IOP3XX_ICR0 = 0xea; | |
223 | ||
224 | while (1) | |
225 | ; | |
226 | } | |
227 | ||
228 | ||
229 | static struct timer_list power_button_poll_timer; | |
230 | ||
231 | static void power_button_poll(unsigned long dummy) | |
232 | { | |
233 | if (gpio_line_get(N2100_POWER_BUTTON) == 0) { | |
234 | ctrl_alt_del(); | |
235 | return; | |
236 | } | |
237 | ||
238 | power_button_poll_timer.expires = jiffies + (HZ / 10); | |
239 | add_timer(&power_button_poll_timer); | |
240 | } | |
241 | ||
242 | ||
243 | static void __init n2100_init_machine(void) | |
244 | { | |
245 | platform_device_register(&iop3xx_i2c0_device); | |
246 | platform_device_register(&n2100_flash_device); | |
247 | platform_device_register(&n2100_serial_device); | |
248 | ||
249 | pm_power_off = n2100_power_off; | |
250 | ||
251 | init_timer(&power_button_poll_timer); | |
252 | power_button_poll_timer.function = power_button_poll; | |
253 | power_button_poll_timer.expires = jiffies + (HZ / 10); | |
254 | add_timer(&power_button_poll_timer); | |
255 | } | |
256 | ||
257 | MACHINE_START(N2100, "Thecus N2100") | |
258 | /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ | |
259 | .phys_io = N2100_UART, | |
260 | .io_pg_offst = ((N2100_UART) >> 18) & 0xfffc, | |
261 | .boot_params = 0xa0000100, | |
262 | .map_io = n2100_map_io, | |
263 | .init_irq = iop32x_init_irq, | |
264 | .timer = &n2100_timer, | |
265 | .init_machine = n2100_init_machine, | |
266 | MACHINE_END |