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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/f75375s.h>
20 #include <linux/leds-pca9532.h>
21 #include <linux/delay.h>
22 #include <linux/kernel.h>
23 #include <linux/pci.h>
24 #include <linux/pm.h>
25 #include <linux/string.h>
26 #include <linux/serial_core.h>
27 #include <linux/serial_8250.h>
28 #include <linux/mtd/physmap.h>
29 #include <linux/i2c.h>
30 #include <linux/platform_device.h>
31 #include <linux/reboot.h>
32 #include <linux/io.h>
33 #include <mach/hardware.h>
34 #include <asm/irq.h>
35 #include <asm/mach/arch.h>
36 #include <asm/mach/map.h>
37 #include <asm/mach/pci.h>
38 #include <asm/mach/time.h>
39 #include <asm/mach-types.h>
40 #include <asm/page.h>
41 #include <asm/pgtable.h>
42 #include <mach/time.h>
43
44 /*
45  * N2100 timer tick configuration.
46  */
47 static void __init n2100_timer_init(void)
48 {
49         /* 33.000 MHz crystal.  */
50         iop_init_time(198000000);
51 }
52
53
54 /*
55  * N2100 I/O.
56  */
57 static struct map_desc n2100_io_desc[] __initdata = {
58         {       /* on-board devices */
59                 .virtual        = N2100_UART,
60                 .pfn            = __phys_to_pfn(N2100_UART),
61                 .length         = 0x00100000,
62                 .type           = MT_DEVICE
63         },
64 };
65
66 void __init n2100_map_io(void)
67 {
68         iop3xx_map_io();
69         iotable_init(n2100_io_desc, ARRAY_SIZE(n2100_io_desc));
70 }
71
72
73 /*
74  * N2100 PCI.
75  */
76 static int __init
77 n2100_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
78 {
79         int irq;
80
81         if (PCI_SLOT(dev->devfn) == 1) {
82                 /* RTL8110SB #1 */
83                 irq = IRQ_IOP32X_XINT0;
84         } else if (PCI_SLOT(dev->devfn) == 2) {
85                 /* RTL8110SB #2 */
86                 irq = IRQ_IOP32X_XINT3;
87         } else if (PCI_SLOT(dev->devfn) == 3) {
88                 /* Sil3512 */
89                 irq = IRQ_IOP32X_XINT2;
90         } else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) {
91                 /* VT6212 INTA */
92                 irq = IRQ_IOP32X_XINT1;
93         } else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) {
94                 /* VT6212 INTB */
95                 irq = IRQ_IOP32X_XINT0;
96         } else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) {
97                 /* VT6212 INTC */
98                 irq = IRQ_IOP32X_XINT2;
99         } else if (PCI_SLOT(dev->devfn) == 5) {
100                 /* Mini-PCI slot */
101                 irq = IRQ_IOP32X_XINT3;
102         } else {
103                 printk(KERN_ERR "n2100_pci_map_irq() called for unknown "
104                         "device PCI:%d:%d:%d\n", dev->bus->number,
105                         PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
106                 irq = -1;
107         }
108
109         return irq;
110 }
111
112 static struct hw_pci n2100_pci __initdata = {
113         .nr_controllers = 1,
114         .ops            = &iop3xx_ops,
115         .setup          = iop3xx_pci_setup,
116         .preinit        = iop3xx_pci_preinit,
117         .map_irq        = n2100_pci_map_irq,
118 };
119
120 /*
121  * Both r8169 chips on the n2100 exhibit PCI parity problems.  Set
122  * the ->broken_parity_status flag for both ports so that the r8169
123  * driver knows it should ignore error interrupts.
124  */
125 static void n2100_fixup_r8169(struct pci_dev *dev)
126 {
127         if (dev->bus->number == 0 &&
128             (dev->devfn == PCI_DEVFN(1, 0) ||
129              dev->devfn == PCI_DEVFN(2, 0)))
130                 dev->broken_parity_status = 1;
131 }
132 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169);
133
134 static int __init n2100_pci_init(void)
135 {
136         if (machine_is_n2100())
137                 pci_common_init(&n2100_pci);
138
139         return 0;
140 }
141
142 subsys_initcall(n2100_pci_init);
143
144
145 /*
146  * N2100 machine initialisation.
147  */
148 static struct physmap_flash_data n2100_flash_data = {
149         .width          = 2,
150 };
151
152 static struct resource n2100_flash_resource = {
153         .start          = 0xf0000000,
154         .end            = 0xf0ffffff,
155         .flags          = IORESOURCE_MEM,
156 };
157
158 static struct platform_device n2100_flash_device = {
159         .name           = "physmap-flash",
160         .id             = 0,
161         .dev            = {
162                 .platform_data  = &n2100_flash_data,
163         },
164         .num_resources  = 1,
165         .resource       = &n2100_flash_resource,
166 };
167
168
169 static struct plat_serial8250_port n2100_serial_port[] = {
170         {
171                 .mapbase        = N2100_UART,
172                 .membase        = (char *)N2100_UART,
173                 .irq            = 0,
174                 .flags          = UPF_SKIP_TEST | UPF_AUTO_IRQ | UPF_SHARE_IRQ,
175                 .iotype         = UPIO_MEM,
176                 .regshift       = 0,
177                 .uartclk        = 1843200,
178         },
179         { },
180 };
181
182 static struct resource n2100_uart_resource = {
183         .start          = N2100_UART,
184         .end            = N2100_UART + 7,
185         .flags          = IORESOURCE_MEM,
186 };
187
188 static struct platform_device n2100_serial_device = {
189         .name           = "serial8250",
190         .id             = PLAT8250_DEV_PLATFORM,
191         .dev            = {
192                 .platform_data          = n2100_serial_port,
193         },
194         .num_resources  = 1,
195         .resource       = &n2100_uart_resource,
196 };
197
198 static struct f75375s_platform_data n2100_f75375s = {
199         .pwm            = { 255, 255 },
200         .pwm_enable = { 0, 0 },
201 };
202
203 static struct pca9532_platform_data n2100_leds = {
204         .leds = {
205         {       .name = "n2100:red:satafail0",
206                 .state = PCA9532_OFF,
207                 .type = PCA9532_TYPE_LED,
208         },
209         {       .name = "n2100:red:satafail1",
210                 .state = PCA9532_OFF,
211                 .type = PCA9532_TYPE_LED,
212         },
213         {       .name = "n2100:blue:usb",
214                 .state = PCA9532_OFF,
215                 .type = PCA9532_TYPE_LED,
216         },
217         {       .type = PCA9532_TYPE_NONE },
218
219         {       .type = PCA9532_TYPE_NONE },
220         {       .type = PCA9532_TYPE_NONE },
221         {       .type = PCA9532_TYPE_NONE },
222         {       .name = "n2100:red:usb",
223                 .state = PCA9532_OFF,
224                 .type = PCA9532_TYPE_LED,
225         },
226
227         {       .type = PCA9532_TYPE_NONE }, /* power OFF gpio */
228         {       .type = PCA9532_TYPE_NONE }, /* reset gpio */
229         {       .type = PCA9532_TYPE_NONE },
230         {       .type = PCA9532_TYPE_NONE },
231
232         {       .type = PCA9532_TYPE_NONE },
233         {       .name = "n2100:orange:system",
234                 .state = PCA9532_OFF,
235                 .type = PCA9532_TYPE_LED,
236         },
237         {       .name = "n2100:red:system",
238                 .state = PCA9532_OFF,
239                 .type = PCA9532_TYPE_LED,
240         },
241         {       .name = "N2100 beeper"  ,
242                 .state =  PCA9532_OFF,
243                 .type = PCA9532_TYPE_N2100_BEEP,
244         },
245         },
246         .psc = { 0, 0 },
247         .pwm = { 0, 0 },
248 };
249
250 static struct i2c_board_info __initdata n2100_i2c_devices[] = {
251         {
252                 I2C_BOARD_INFO("rs5c372b", 0x32),
253         },
254         {
255                 I2C_BOARD_INFO("f75375", 0x2e),
256                 .platform_data = &n2100_f75375s,
257         },
258         {
259                 I2C_BOARD_INFO("pca9532", 0x60),
260                 .platform_data = &n2100_leds,
261         },
262 };
263
264 /*
265  * Pull PCA9532 GPIO #8 low to power off the machine.
266  */
267 static void n2100_power_off(void)
268 {
269         local_irq_disable();
270
271         /* Start condition, I2C address of PCA9532, write transaction.  */
272         *IOP3XX_IDBR0 = 0xc0;
273         *IOP3XX_ICR0 = 0xe9;
274         mdelay(1);
275
276         /* Write address 0x08.  */
277         *IOP3XX_IDBR0 = 0x08;
278         *IOP3XX_ICR0 = 0xe8;
279         mdelay(1);
280
281         /* Write data 0x01, stop condition.  */
282         *IOP3XX_IDBR0 = 0x01;
283         *IOP3XX_ICR0 = 0xea;
284
285         while (1)
286                 ;
287 }
288
289 static void n2100_restart(enum reboot_mode mode, const char *cmd)
290 {
291         gpio_line_set(N2100_HARDWARE_RESET, GPIO_LOW);
292         gpio_line_config(N2100_HARDWARE_RESET, GPIO_OUT);
293         while (1)
294                 ;
295 }
296
297
298 static struct timer_list power_button_poll_timer;
299
300 static void power_button_poll(unsigned long dummy)
301 {
302         if (gpio_line_get(N2100_POWER_BUTTON) == 0) {
303                 ctrl_alt_del();
304                 return;
305         }
306
307         power_button_poll_timer.expires = jiffies + (HZ / 10);
308         add_timer(&power_button_poll_timer);
309 }
310
311
312 static void __init n2100_init_machine(void)
313 {
314         platform_device_register(&iop3xx_i2c0_device);
315         platform_device_register(&n2100_flash_device);
316         platform_device_register(&n2100_serial_device);
317         platform_device_register(&iop3xx_dma_0_channel);
318         platform_device_register(&iop3xx_dma_1_channel);
319
320         i2c_register_board_info(0, n2100_i2c_devices,
321                 ARRAY_SIZE(n2100_i2c_devices));
322
323         pm_power_off = n2100_power_off;
324
325         init_timer(&power_button_poll_timer);
326         power_button_poll_timer.function = power_button_poll;
327         power_button_poll_timer.expires = jiffies + (HZ / 10);
328         add_timer(&power_button_poll_timer);
329 }
330
331 MACHINE_START(N2100, "Thecus N2100")
332         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
333         .atag_offset    = 0x100,
334         .map_io         = n2100_map_io,
335         .init_irq       = iop32x_init_irq,
336         .init_time      = n2100_timer_init,
337         .init_machine   = n2100_init_machine,
338         .restart        = n2100_restart,
339 MACHINE_END