?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
spi: davinci: always start receive DMA
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / arch / arm / mach-at91 / at91cap9_devices.c
blobd1f775e8635346e154d95a05dd2d2d85ff8f0c8c
1 /*
2 * arch/arm/mach-at91/at91cap9_devices.c
3 *
4 * Copyright (C) 2007 Stelian Pop <stelian.pop@leadtechdesign.com>
5 * Copyright (C) 2007 Lead Tech Design <www.leadtechdesign.com>
6 * Copyright (C) 2007 Atmel Corporation.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 */
14 #include <asm/mach/arch.h>
15 #include <asm/mach/map.h>
16 #include <asm/mach/irq.h>
17
18 #include <linux/dma-mapping.h>
19 #include <linux/platform_device.h>
20 #include <linux/i2c-gpio.h>
21
22 #include <video/atmel_lcdc.h>
23
24 #include <mach/board.h>
25 #include <mach/cpu.h>
26 #include <mach/gpio.h>
27 #include <mach/at91cap9.h>
28 #include <mach/at91cap9_matrix.h>
29 #include <mach/at91sam9_smc.h>
30
31 #include "generic.h"
32
33
34 /* --------------------------------------------------------------------
35 * USB Host
36 * -------------------------------------------------------------------- */
37
38 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
39 static u64 ohci_dmamask = DMA_BIT_MASK(32);
40 static struct at91_usbh_data usbh_data;
41
42 static struct resource usbh_resources[] = {
43 [0] = {
44 .start = AT91CAP9_UHP_BASE,
45 .end = AT91CAP9_UHP_BASE + SZ_1M - 1,
46 .flags = IORESOURCE_MEM,
47 },
48 [1] = {
49 .start = AT91CAP9_ID_UHP,
50 .end = AT91CAP9_ID_UHP,
51 .flags = IORESOURCE_IRQ,
52 },
53 };
54
55 static struct platform_device at91_usbh_device = {
56 .name = "at91_ohci",
57 .id = -1,
58 .dev = {
59 .dma_mask = &ohci_dmamask,
60 .coherent_dma_mask = DMA_BIT_MASK(32),
61 .platform_data = &usbh_data,
62 },
63 .resource = usbh_resources,
64 .num_resources = ARRAY_SIZE(usbh_resources),
65 };
66
67 void __init at91_add_device_usbh(struct at91_usbh_data *data)
68 {
69 int i;
70
71 if (!data)
72 return;
73
74 if (cpu_is_at91cap9_revB())
75 set_irq_type(AT91CAP9_ID_UHP, IRQ_TYPE_LEVEL_HIGH);
76
77 /* Enable VBus control for UHP ports */
78 for (i = 0; i < data->ports; i++) {
79 if (data->vbus_pin[i])
80 at91_set_gpio_output(data->vbus_pin[i], 0);
81 }
82
83 usbh_data = *data;
84 platform_device_register(&at91_usbh_device);
85 }
86 #else
87 void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
88 #endif
89
90
91 /* --------------------------------------------------------------------
92 * USB HS Device (Gadget)
93 * -------------------------------------------------------------------- */
94
95 #if defined(CONFIG_USB_GADGET_ATMEL_USBA) || defined(CONFIG_USB_GADGET_ATMEL_USBA_MODULE)
96
97 static struct resource usba_udc_resources[] = {
98 [0] = {
99 .start = AT91CAP9_UDPHS_FIFO,
100 .end = AT91CAP9_UDPHS_FIFO + SZ_512K - 1,
101 .flags = IORESOURCE_MEM,
102 },
103 [1] = {
104 .start = AT91CAP9_BASE_UDPHS,
105 .end = AT91CAP9_BASE_UDPHS + SZ_1K - 1,
106 .flags = IORESOURCE_MEM,
107 },
108 [2] = {
109 .start = AT91CAP9_ID_UDPHS,
110 .end = AT91CAP9_ID_UDPHS,
111 .flags = IORESOURCE_IRQ,
112 },
113 };
114
115 #define EP(nam, idx, maxpkt, maxbk, dma, isoc) \
116 [idx] = { \
117 .name = nam, \
118 .index = idx, \
119 .fifo_size = maxpkt, \
120 .nr_banks = maxbk, \
121 .can_dma = dma, \
122 .can_isoc = isoc, \
123 }
124
125 static struct usba_ep_data usba_udc_ep[] = {
126 EP("ep0", 0, 64, 1, 0, 0),
127 EP("ep1", 1, 1024, 3, 1, 1),
128 EP("ep2", 2, 1024, 3, 1, 1),
129 EP("ep3", 3, 1024, 2, 1, 1),
130 EP("ep4", 4, 1024, 2, 1, 1),
131 EP("ep5", 5, 1024, 2, 1, 0),
132 EP("ep6", 6, 1024, 2, 1, 0),
133 EP("ep7", 7, 1024, 2, 0, 0),
134 };
135
136 #undef EP
137
138 /*
139 * pdata doesn't have room for any endpoints, so we need to
140 * append room for the ones we need right after it.
141 */
142 static struct {
143 struct usba_platform_data pdata;
144 struct usba_ep_data ep[8];
145 } usba_udc_data;
146
147 static struct platform_device at91_usba_udc_device = {
148 .name = "atmel_usba_udc",
149 .id = -1,
150 .dev = {
151 .platform_data = &usba_udc_data.pdata,
152 },
153 .resource = usba_udc_resources,
154 .num_resources = ARRAY_SIZE(usba_udc_resources),
155 };
156
157 void __init at91_add_device_usba(struct usba_platform_data *data)
158 {
159 if (cpu_is_at91cap9_revB()) {
160 set_irq_type(AT91CAP9_ID_UDPHS, IRQ_TYPE_LEVEL_HIGH);
161 at91_sys_write(AT91_MATRIX_UDPHS, AT91_MATRIX_SELECT_UDPHS |
162 AT91_MATRIX_UDPHS_BYPASS_LOCK);
163 }
164 else
165 at91_sys_write(AT91_MATRIX_UDPHS, AT91_MATRIX_SELECT_UDPHS);
166
167 /*
168 * Invalid pins are 0 on AT91, but the usba driver is shared
169 * with AVR32, which use negative values instead. Once/if
170 * gpio_is_valid() is ported to AT91, revisit this code.
171 */
172 usba_udc_data.pdata.vbus_pin = -EINVAL;
173 usba_udc_data.pdata.num_ep = ARRAY_SIZE(usba_udc_ep);
174 memcpy(usba_udc_data.ep, usba_udc_ep, sizeof(usba_udc_ep));;
175
176 if (data && data->vbus_pin > 0) {
177 at91_set_gpio_input(data->vbus_pin, 0);
178 at91_set_deglitch(data->vbus_pin, 1);
179 usba_udc_data.pdata.vbus_pin = data->vbus_pin;
180 }
181
182 /* Pullup pin is handled internally by USB device peripheral */
183
184 /* Clocks */
185 at91_clock_associate("utmi_clk", &at91_usba_udc_device.dev, "hclk");
186 at91_clock_associate("udphs_clk", &at91_usba_udc_device.dev, "pclk");
187
188 platform_device_register(&at91_usba_udc_device);
189 }
190 #else
191 void __init at91_add_device_usba(struct usba_platform_data *data) {}
192 #endif
193
194
195 /* --------------------------------------------------------------------
196 * Ethernet
197 * -------------------------------------------------------------------- */
198
199 #if defined(CONFIG_MACB) || defined(CONFIG_MACB_MODULE)
200 static u64 eth_dmamask = DMA_BIT_MASK(32);
201 static struct at91_eth_data eth_data;
202
203 static struct resource eth_resources[] = {
204 [0] = {
205 .start = AT91CAP9_BASE_EMAC,
206 .end = AT91CAP9_BASE_EMAC + SZ_16K - 1,
207 .flags = IORESOURCE_MEM,
208 },
209 [1] = {
210 .start = AT91CAP9_ID_EMAC,
211 .end = AT91CAP9_ID_EMAC,
212 .flags = IORESOURCE_IRQ,
213 },
214 };
215
216 static struct platform_device at91cap9_eth_device = {
217 .name = "macb",
218 .id = -1,
219 .dev = {
220 .dma_mask = &eth_dmamask,
221 .coherent_dma_mask = DMA_BIT_MASK(32),
222 .platform_data = &eth_data,
223 },
224 .resource = eth_resources,
225 .num_resources = ARRAY_SIZE(eth_resources),
226 };
227
228 void __init at91_add_device_eth(struct at91_eth_data *data)
229 {
230 if (!data)
231 return;
232
233 if (data->phy_irq_pin) {
234 at91_set_gpio_input(data->phy_irq_pin, 0);
235 at91_set_deglitch(data->phy_irq_pin, 1);
236 }
237
238 /* Pins used for MII and RMII */
239 at91_set_A_periph(AT91_PIN_PB21, 0); /* ETXCK_EREFCK */
240 at91_set_A_periph(AT91_PIN_PB22, 0); /* ERXDV */
241 at91_set_A_periph(AT91_PIN_PB25, 0); /* ERX0 */
242 at91_set_A_periph(AT91_PIN_PB26, 0); /* ERX1 */
243 at91_set_A_periph(AT91_PIN_PB27, 0); /* ERXER */
244 at91_set_A_periph(AT91_PIN_PB28, 0); /* ETXEN */
245 at91_set_A_periph(AT91_PIN_PB23, 0); /* ETX0 */
246 at91_set_A_periph(AT91_PIN_PB24, 0); /* ETX1 */
247 at91_set_A_periph(AT91_PIN_PB30, 0); /* EMDIO */
248 at91_set_A_periph(AT91_PIN_PB29, 0); /* EMDC */
249
250 if (!data->is_rmii) {
251 at91_set_B_periph(AT91_PIN_PC25, 0); /* ECRS */
252 at91_set_B_periph(AT91_PIN_PC26, 0); /* ECOL */
253 at91_set_B_periph(AT91_PIN_PC22, 0); /* ERX2 */
254 at91_set_B_periph(AT91_PIN_PC23, 0); /* ERX3 */
255 at91_set_B_periph(AT91_PIN_PC27, 0); /* ERXCK */
256 at91_set_B_periph(AT91_PIN_PC20, 0); /* ETX2 */
257 at91_set_B_periph(AT91_PIN_PC21, 0); /* ETX3 */
258 at91_set_B_periph(AT91_PIN_PC24, 0); /* ETXER */
259 }
260
261 eth_data = *data;
262 platform_device_register(&at91cap9_eth_device);
263 }
264 #else
265 void __init at91_add_device_eth(struct at91_eth_data *data) {}
266 #endif
267
268
269 /* --------------------------------------------------------------------
270 * MMC / SD
271 * -------------------------------------------------------------------- */
272
273 #if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
274 static u64 mmc_dmamask = DMA_BIT_MASK(32);
275 static struct at91_mmc_data mmc0_data, mmc1_data;
276
277 static struct resource mmc0_resources[] = {
278 [0] = {
279 .start = AT91CAP9_BASE_MCI0,
280 .end = AT91CAP9_BASE_MCI0 + SZ_16K - 1,
281 .flags = IORESOURCE_MEM,
282 },
283 [1] = {
284 .start = AT91CAP9_ID_MCI0,
285 .end = AT91CAP9_ID_MCI0,
286 .flags = IORESOURCE_IRQ,
287 },
288 };
289
290 static struct platform_device at91cap9_mmc0_device = {
291 .name = "at91_mci",
292 .id = 0,
293 .dev = {
294 .dma_mask = &mmc_dmamask,
295 .coherent_dma_mask = DMA_BIT_MASK(32),
296 .platform_data = &mmc0_data,
297 },
298 .resource = mmc0_resources,
299 .num_resources = ARRAY_SIZE(mmc0_resources),
300 };
301
302 static struct resource mmc1_resources[] = {
303 [0] = {
304 .start = AT91CAP9_BASE_MCI1,
305 .end = AT91CAP9_BASE_MCI1 + SZ_16K - 1,
306 .flags = IORESOURCE_MEM,
307 },
308 [1] = {
309 .start = AT91CAP9_ID_MCI1,
310 .end = AT91CAP9_ID_MCI1,
311 .flags = IORESOURCE_IRQ,
312 },
313 };
314
315 static struct platform_device at91cap9_mmc1_device = {
316 .name = "at91_mci",
317 .id = 1,
318 .dev = {
319 .dma_mask = &mmc_dmamask,
320 .coherent_dma_mask = DMA_BIT_MASK(32),
321 .platform_data = &mmc1_data,
322 },
323 .resource = mmc1_resources,
324 .num_resources = ARRAY_SIZE(mmc1_resources),
325 };
326
327 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
328 {
329 if (!data)
330 return;
331
332 /* input/irq */
333 if (data->det_pin) {
334 at91_set_gpio_input(data->det_pin, 1);
335 at91_set_deglitch(data->det_pin, 1);
336 }
337 if (data->wp_pin)
338 at91_set_gpio_input(data->wp_pin, 1);
339 if (data->vcc_pin)
340 at91_set_gpio_output(data->vcc_pin, 0);
341
342 if (mmc_id == 0) { /* MCI0 */
343 /* CLK */
344 at91_set_A_periph(AT91_PIN_PA2, 0);
345
346 /* CMD */
347 at91_set_A_periph(AT91_PIN_PA1, 1);
348
349 /* DAT0, maybe DAT1..DAT3 */
350 at91_set_A_periph(AT91_PIN_PA0, 1);
351 if (data->wire4) {
352 at91_set_A_periph(AT91_PIN_PA3, 1);
353 at91_set_A_periph(AT91_PIN_PA4, 1);
354 at91_set_A_periph(AT91_PIN_PA5, 1);
355 }
356
357 mmc0_data = *data;
358 at91_clock_associate("mci0_clk", &at91cap9_mmc0_device.dev, "mci_clk");
359 platform_device_register(&at91cap9_mmc0_device);
360 } else { /* MCI1 */
361 /* CLK */
362 at91_set_A_periph(AT91_PIN_PA16, 0);
363
364 /* CMD */
365 at91_set_A_periph(AT91_PIN_PA17, 1);
366
367 /* DAT0, maybe DAT1..DAT3 */
368 at91_set_A_periph(AT91_PIN_PA18, 1);
369 if (data->wire4) {
370 at91_set_A_periph(AT91_PIN_PA19, 1);
371 at91_set_A_periph(AT91_PIN_PA20, 1);
372 at91_set_A_periph(AT91_PIN_PA21, 1);
373 }
374
375 mmc1_data = *data;
376 at91_clock_associate("mci1_clk", &at91cap9_mmc1_device.dev, "mci_clk");
377 platform_device_register(&at91cap9_mmc1_device);
378 }
379 }
380 #else
381 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
382 #endif
383
384
385 /* --------------------------------------------------------------------
386 * NAND / SmartMedia
387 * -------------------------------------------------------------------- */
388
389 #if defined(CONFIG_MTD_NAND_ATMEL) || defined(CONFIG_MTD_NAND_ATMEL_MODULE)
390 static struct atmel_nand_data nand_data;
391
392 #define NAND_BASE AT91_CHIPSELECT_3
393
394 static struct resource nand_resources[] = {
395 [0] = {
396 .start = NAND_BASE,
397 .end = NAND_BASE + SZ_256M - 1,
398 .flags = IORESOURCE_MEM,
399 },
400 [1] = {
401 .start = AT91_BASE_SYS + AT91_ECC,
402 .end = AT91_BASE_SYS + AT91_ECC + SZ_512 - 1,
403 .flags = IORESOURCE_MEM,
404 }
405 };
406
407 static struct platform_device at91cap9_nand_device = {
408 .name = "atmel_nand",
409 .id = -1,
410 .dev = {
411 .platform_data = &nand_data,
412 },
413 .resource = nand_resources,
414 .num_resources = ARRAY_SIZE(nand_resources),
415 };
416
417 void __init at91_add_device_nand(struct atmel_nand_data *data)
418 {
419 unsigned long csa;
420
421 if (!data)
422 return;
423
424 csa = at91_sys_read(AT91_MATRIX_EBICSA);
425 at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_EBI_CS3A_SMC_SMARTMEDIA);
426
427 /* enable pin */
428 if (data->enable_pin)
429 at91_set_gpio_output(data->enable_pin, 1);
430
431 /* ready/busy pin */
432 if (data->rdy_pin)
433 at91_set_gpio_input(data->rdy_pin, 1);
434
435 /* card detect pin */
436 if (data->det_pin)
437 at91_set_gpio_input(data->det_pin, 1);
438
439 nand_data = *data;
440 platform_device_register(&at91cap9_nand_device);
441 }
442 #else
443 void __init at91_add_device_nand(struct atmel_nand_data *data) {}
444 #endif
445
446
447 /* --------------------------------------------------------------------
448 * TWI (i2c)
449 * -------------------------------------------------------------------- */
450
451 /*
452 * Prefer the GPIO code since the TWI controller isn't robust
453 * (gets overruns and underruns under load) and can only issue
454 * repeated STARTs in one scenario (the driver doesn't yet handle them).
455 */
456 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
457
458 static struct i2c_gpio_platform_data pdata = {
459 .sda_pin = AT91_PIN_PB4,
460 .sda_is_open_drain = 1,
461 .scl_pin = AT91_PIN_PB5,
462 .scl_is_open_drain = 1,
463 .udelay = 2, /* ~100 kHz */
464 };
465
466 static struct platform_device at91cap9_twi_device = {
467 .name = "i2c-gpio",
468 .id = -1,
469 .dev.platform_data = &pdata,
470 };
471
472 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
473 {
474 at91_set_GPIO_periph(AT91_PIN_PB4, 1); /* TWD (SDA) */
475 at91_set_multi_drive(AT91_PIN_PB4, 1);
476
477 at91_set_GPIO_periph(AT91_PIN_PB5, 1); /* TWCK (SCL) */
478 at91_set_multi_drive(AT91_PIN_PB5, 1);
479
480 i2c_register_board_info(0, devices, nr_devices);
481 platform_device_register(&at91cap9_twi_device);
482 }
483
484 #elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
485
486 static struct resource twi_resources[] = {
487 [0] = {
488 .start = AT91CAP9_BASE_TWI,
489 .end = AT91CAP9_BASE_TWI + SZ_16K - 1,
490 .flags = IORESOURCE_MEM,
491 },
492 [1] = {
493 .start = AT91CAP9_ID_TWI,
494 .end = AT91CAP9_ID_TWI,
495 .flags = IORESOURCE_IRQ,
496 },
497 };
498
499 static struct platform_device at91cap9_twi_device = {
500 .name = "at91_i2c",
501 .id = -1,
502 .resource = twi_resources,
503 .num_resources = ARRAY_SIZE(twi_resources),
504 };
505
506 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
507 {
508 /* pins used for TWI interface */
509 at91_set_B_periph(AT91_PIN_PB4, 0); /* TWD */
510 at91_set_multi_drive(AT91_PIN_PB4, 1);
511
512 at91_set_B_periph(AT91_PIN_PB5, 0); /* TWCK */
513 at91_set_multi_drive(AT91_PIN_PB5, 1);
514
515 i2c_register_board_info(0, devices, nr_devices);
516 platform_device_register(&at91cap9_twi_device);
517 }
518 #else
519 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
520 #endif
521
522 /* --------------------------------------------------------------------
523 * SPI
524 * -------------------------------------------------------------------- */
525
526 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
527 static u64 spi_dmamask = DMA_BIT_MASK(32);
528
529 static struct resource spi0_resources[] = {
530 [0] = {
531 .start = AT91CAP9_BASE_SPI0,
532 .end = AT91CAP9_BASE_SPI0 + SZ_16K - 1,
533 .flags = IORESOURCE_MEM,
534 },
535 [1] = {
536 .start = AT91CAP9_ID_SPI0,
537 .end = AT91CAP9_ID_SPI0,
538 .flags = IORESOURCE_IRQ,
539 },
540 };
541
542 static struct platform_device at91cap9_spi0_device = {
543 .name = "atmel_spi",
544 .id = 0,
545 .dev = {
546 .dma_mask = &spi_dmamask,
547 .coherent_dma_mask = DMA_BIT_MASK(32),
548 },
549 .resource = spi0_resources,
550 .num_resources = ARRAY_SIZE(spi0_resources),
551 };
552
553 static const unsigned spi0_standard_cs[4] = { AT91_PIN_PA5, AT91_PIN_PA3, AT91_PIN_PD0, AT91_PIN_PD1 };
554
555 static struct resource spi1_resources[] = {
556 [0] = {
557 .start = AT91CAP9_BASE_SPI1,
558 .end = AT91CAP9_BASE_SPI1 + SZ_16K - 1,
559 .flags = IORESOURCE_MEM,
560 },
561 [1] = {
562 .start = AT91CAP9_ID_SPI1,
563 .end = AT91CAP9_ID_SPI1,
564 .flags = IORESOURCE_IRQ,
565 },
566 };
567
568 static struct platform_device at91cap9_spi1_device = {
569 .name = "atmel_spi",
570 .id = 1,
571 .dev = {
572 .dma_mask = &spi_dmamask,
573 .coherent_dma_mask = DMA_BIT_MASK(32),
574 },
575 .resource = spi1_resources,
576 .num_resources = ARRAY_SIZE(spi1_resources),
577 };
578
579 static const unsigned spi1_standard_cs[4] = { AT91_PIN_PB15, AT91_PIN_PB16, AT91_PIN_PB17, AT91_PIN_PB18 };
580
581 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
582 {
583 int i;
584 unsigned long cs_pin;
585 short enable_spi0 = 0;
586 short enable_spi1 = 0;
587
588 /* Choose SPI chip-selects */
589 for (i = 0; i < nr_devices; i++) {
590 if (devices[i].controller_data)
591 cs_pin = (unsigned long) devices[i].controller_data;
592 else if (devices[i].bus_num == 0)
593 cs_pin = spi0_standard_cs[devices[i].chip_select];
594 else
595 cs_pin = spi1_standard_cs[devices[i].chip_select];
596
597 if (devices[i].bus_num == 0)
598 enable_spi0 = 1;
599 else
600 enable_spi1 = 1;
601
602 /* enable chip-select pin */
603 at91_set_gpio_output(cs_pin, 1);
604
605 /* pass chip-select pin to driver */
606 devices[i].controller_data = (void *) cs_pin;
607 }
608
609 spi_register_board_info(devices, nr_devices);
610
611 /* Configure SPI bus(es) */
612 if (enable_spi0) {
613 at91_set_B_periph(AT91_PIN_PA0, 0); /* SPI0_MISO */
614 at91_set_B_periph(AT91_PIN_PA1, 0); /* SPI0_MOSI */
615 at91_set_B_periph(AT91_PIN_PA2, 0); /* SPI0_SPCK */
616
617 at91_clock_associate("spi0_clk", &at91cap9_spi0_device.dev, "spi_clk");
618 platform_device_register(&at91cap9_spi0_device);
619 }
620 if (enable_spi1) {
621 at91_set_A_periph(AT91_PIN_PB12, 0); /* SPI1_MISO */
622 at91_set_A_periph(AT91_PIN_PB13, 0); /* SPI1_MOSI */
623 at91_set_A_periph(AT91_PIN_PB14, 0); /* SPI1_SPCK */
624
625 at91_clock_associate("spi1_clk", &at91cap9_spi1_device.dev, "spi_clk");
626 platform_device_register(&at91cap9_spi1_device);
627 }
628 }
629 #else
630 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
631 #endif
632
633
634 /* --------------------------------------------------------------------
635 * Timer/Counter block
636 * -------------------------------------------------------------------- */
637
638 #ifdef CONFIG_ATMEL_TCLIB
639
640 static struct resource tcb_resources[] = {
641 [0] = {
642 .start = AT91CAP9_BASE_TCB0,
643 .end = AT91CAP9_BASE_TCB0 + SZ_16K - 1,
644 .flags = IORESOURCE_MEM,
645 },
646 [1] = {
647 .start = AT91CAP9_ID_TCB,
648 .end = AT91CAP9_ID_TCB,
649 .flags = IORESOURCE_IRQ,
650 },
651 };
652
653 static struct platform_device at91cap9_tcb_device = {
654 .name = "atmel_tcb",
655 .id = 0,
656 .resource = tcb_resources,
657 .num_resources = ARRAY_SIZE(tcb_resources),
658 };
659
660 static void __init at91_add_device_tc(void)
661 {
662 /* this chip has one clock and irq for all three TC channels */
663 at91_clock_associate("tcb_clk", &at91cap9_tcb_device.dev, "t0_clk");
664 platform_device_register(&at91cap9_tcb_device);
665 }
666 #else
667 static void __init at91_add_device_tc(void) { }
668 #endif
669
670
671 /* --------------------------------------------------------------------
672 * RTT
673 * -------------------------------------------------------------------- */
674
675 static struct resource rtt_resources[] = {
676 {
677 .start = AT91_BASE_SYS + AT91_RTT,
678 .end = AT91_BASE_SYS + AT91_RTT + SZ_16 - 1,
679 .flags = IORESOURCE_MEM,
680 }
681 };
682
683 static struct platform_device at91cap9_rtt_device = {
684 .name = "at91_rtt",
685 .id = 0,
686 .resource = rtt_resources,
687 .num_resources = ARRAY_SIZE(rtt_resources),
688 };
689
690 static void __init at91_add_device_rtt(void)
691 {
692 platform_device_register(&at91cap9_rtt_device);
693 }
694
695
696 /* --------------------------------------------------------------------
697 * Watchdog
698 * -------------------------------------------------------------------- */
699
700 #if defined(CONFIG_AT91SAM9X_WATCHDOG) || defined(CONFIG_AT91SAM9X_WATCHDOG_MODULE)
701 static struct platform_device at91cap9_wdt_device = {
702 .name = "at91_wdt",
703 .id = -1,
704 .num_resources = 0,
705 };
706
707 static void __init at91_add_device_watchdog(void)
708 {
709 platform_device_register(&at91cap9_wdt_device);
710 }
711 #else
712 static void __init at91_add_device_watchdog(void) {}
713 #endif
714
715
716 /* --------------------------------------------------------------------
717 * PWM
718 * --------------------------------------------------------------------*/
719
720 #if defined(CONFIG_ATMEL_PWM)
721 static u32 pwm_mask;
722
723 static struct resource pwm_resources[] = {
724 [0] = {
725 .start = AT91CAP9_BASE_PWMC,
726 .end = AT91CAP9_BASE_PWMC + SZ_16K - 1,
727 .flags = IORESOURCE_MEM,
728 },
729 [1] = {
730 .start = AT91CAP9_ID_PWMC,
731 .end = AT91CAP9_ID_PWMC,
732 .flags = IORESOURCE_IRQ,
733 },
734 };
735
736 static struct platform_device at91cap9_pwm0_device = {
737 .name = "atmel_pwm",
738 .id = -1,
739 .dev = {
740 .platform_data = &pwm_mask,
741 },
742 .resource = pwm_resources,
743 .num_resources = ARRAY_SIZE(pwm_resources),
744 };
745
746 void __init at91_add_device_pwm(u32 mask)
747 {
748 if (mask & (1 << AT91_PWM0))
749 at91_set_A_periph(AT91_PIN_PB19, 1); /* enable PWM0 */
750
751 if (mask & (1 << AT91_PWM1))
752 at91_set_B_periph(AT91_PIN_PB8, 1); /* enable PWM1 */
753
754 if (mask & (1 << AT91_PWM2))
755 at91_set_B_periph(AT91_PIN_PC29, 1); /* enable PWM2 */
756
757 if (mask & (1 << AT91_PWM3))
758 at91_set_B_periph(AT91_PIN_PA11, 1); /* enable PWM3 */
759
760 pwm_mask = mask;
761
762 platform_device_register(&at91cap9_pwm0_device);
763 }
764 #else
765 void __init at91_add_device_pwm(u32 mask) {}
766 #endif
767
768
769
770 /* --------------------------------------------------------------------
771 * AC97
772 * -------------------------------------------------------------------- */
773
774 #if defined(CONFIG_SND_ATMEL_AC97C) || defined(CONFIG_SND_ATMEL_AC97C_MODULE)
775 static u64 ac97_dmamask = DMA_BIT_MASK(32);
776 static struct ac97c_platform_data ac97_data;
777
778 static struct resource ac97_resources[] = {
779 [0] = {
780 .start = AT91CAP9_BASE_AC97C,
781 .end = AT91CAP9_BASE_AC97C + SZ_16K - 1,
782 .flags = IORESOURCE_MEM,
783 },
784 [1] = {
785 .start = AT91CAP9_ID_AC97C,
786 .end = AT91CAP9_ID_AC97C,
787 .flags = IORESOURCE_IRQ,
788 },
789 };
790
791 static struct platform_device at91cap9_ac97_device = {
792 .name = "atmel_ac97c",
793 .id = 1,
794 .dev = {
795 .dma_mask = &ac97_dmamask,
796 .coherent_dma_mask = DMA_BIT_MASK(32),
797 .platform_data = &ac97_data,
798 },
799 .resource = ac97_resources,
800 .num_resources = ARRAY_SIZE(ac97_resources),
801 };
802
803 void __init at91_add_device_ac97(struct ac97c_platform_data *data)
804 {
805 if (!data)
806 return;
807
808 at91_set_A_periph(AT91_PIN_PA6, 0); /* AC97FS */
809 at91_set_A_periph(AT91_PIN_PA7, 0); /* AC97CK */
810 at91_set_A_periph(AT91_PIN_PA8, 0); /* AC97TX */
811 at91_set_A_periph(AT91_PIN_PA9, 0); /* AC97RX */
812
813 /* reset */
814 if (data->reset_pin)
815 at91_set_gpio_output(data->reset_pin, 0);
816
817 ac97_data = *data;
818 platform_device_register(&at91cap9_ac97_device);
819 }
820 #else
821 void __init at91_add_device_ac97(struct ac97c_platform_data *data) {}
822 #endif
823
824
825 /* --------------------------------------------------------------------
826 * LCD Controller
827 * -------------------------------------------------------------------- */
828
829 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
830 static u64 lcdc_dmamask = DMA_BIT_MASK(32);
831 static struct atmel_lcdfb_info lcdc_data;
832
833 static struct resource lcdc_resources[] = {
834 [0] = {
835 .start = AT91CAP9_LCDC_BASE,
836 .end = AT91CAP9_LCDC_BASE + SZ_4K - 1,
837 .flags = IORESOURCE_MEM,
838 },
839 [1] = {
840 .start = AT91CAP9_ID_LCDC,
841 .end = AT91CAP9_ID_LCDC,
842 .flags = IORESOURCE_IRQ,
843 },
844 };
845
846 static struct platform_device at91_lcdc_device = {
847 .name = "atmel_lcdfb",
848 .id = 0,
849 .dev = {
850 .dma_mask = &lcdc_dmamask,
851 .coherent_dma_mask = DMA_BIT_MASK(32),
852 .platform_data = &lcdc_data,
853 },
854 .resource = lcdc_resources,
855 .num_resources = ARRAY_SIZE(lcdc_resources),
856 };
857
858 void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
859 {
860 if (!data)
861 return;
862
863 if (cpu_is_at91cap9_revB())
864 set_irq_type(AT91CAP9_ID_LCDC, IRQ_TYPE_LEVEL_HIGH);
865
866 at91_set_A_periph(AT91_PIN_PC1, 0); /* LCDHSYNC */
867 at91_set_A_periph(AT91_PIN_PC2, 0); /* LCDDOTCK */
868 at91_set_A_periph(AT91_PIN_PC3, 0); /* LCDDEN */
869 at91_set_B_periph(AT91_PIN_PB9, 0); /* LCDCC */
870 at91_set_A_periph(AT91_PIN_PC6, 0); /* LCDD2 */
871 at91_set_A_periph(AT91_PIN_PC7, 0); /* LCDD3 */
872 at91_set_A_periph(AT91_PIN_PC8, 0); /* LCDD4 */
873 at91_set_A_periph(AT91_PIN_PC9, 0); /* LCDD5 */
874 at91_set_A_periph(AT91_PIN_PC10, 0); /* LCDD6 */
875 at91_set_A_periph(AT91_PIN_PC11, 0); /* LCDD7 */
876 at91_set_A_periph(AT91_PIN_PC14, 0); /* LCDD10 */
877 at91_set_A_periph(AT91_PIN_PC15, 0); /* LCDD11 */
878 at91_set_A_periph(AT91_PIN_PC16, 0); /* LCDD12 */
879 at91_set_A_periph(AT91_PIN_PC17, 0); /* LCDD13 */
880 at91_set_A_periph(AT91_PIN_PC18, 0); /* LCDD14 */
881 at91_set_A_periph(AT91_PIN_PC19, 0); /* LCDD15 */
882 at91_set_A_periph(AT91_PIN_PC22, 0); /* LCDD18 */
883 at91_set_A_periph(AT91_PIN_PC23, 0); /* LCDD19 */
884 at91_set_A_periph(AT91_PIN_PC24, 0); /* LCDD20 */
885 at91_set_A_periph(AT91_PIN_PC25, 0); /* LCDD21 */
886 at91_set_A_periph(AT91_PIN_PC26, 0); /* LCDD22 */
887 at91_set_A_periph(AT91_PIN_PC27, 0); /* LCDD23 */
888
889 lcdc_data = *data;
890 platform_device_register(&at91_lcdc_device);
891 }
892 #else
893 void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data) {}
894 #endif
895
896
897 /* --------------------------------------------------------------------
898 * SSC -- Synchronous Serial Controller
899 * -------------------------------------------------------------------- */
900
901 #if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE)
902 static u64 ssc0_dmamask = DMA_BIT_MASK(32);
903
904 static struct resource ssc0_resources[] = {
905 [0] = {
906 .start = AT91CAP9_BASE_SSC0,
907 .end = AT91CAP9_BASE_SSC0 + SZ_16K - 1,
908 .flags = IORESOURCE_MEM,
909 },
910 [1] = {
911 .start = AT91CAP9_ID_SSC0,
912 .end = AT91CAP9_ID_SSC0,
913 .flags = IORESOURCE_IRQ,
914 },
915 };
916
917 static struct platform_device at91cap9_ssc0_device = {
918 .name = "ssc",
919 .id = 0,
920 .dev = {
921 .dma_mask = &ssc0_dmamask,
922 .coherent_dma_mask = DMA_BIT_MASK(32),
923 },
924 .resource = ssc0_resources,
925 .num_resources = ARRAY_SIZE(ssc0_resources),
926 };
927
928 static inline void configure_ssc0_pins(unsigned pins)
929 {
930 if (pins & ATMEL_SSC_TF)
931 at91_set_A_periph(AT91_PIN_PB0, 1);
932 if (pins & ATMEL_SSC_TK)
933 at91_set_A_periph(AT91_PIN_PB1, 1);
934 if (pins & ATMEL_SSC_TD)
935 at91_set_A_periph(AT91_PIN_PB2, 1);
936 if (pins & ATMEL_SSC_RD)
937 at91_set_A_periph(AT91_PIN_PB3, 1);
938 if (pins & ATMEL_SSC_RK)
939 at91_set_A_periph(AT91_PIN_PB4, 1);
940 if (pins & ATMEL_SSC_RF)
941 at91_set_A_periph(AT91_PIN_PB5, 1);
942 }
943
944 static u64 ssc1_dmamask = DMA_BIT_MASK(32);
945
946 static struct resource ssc1_resources[] = {
947 [0] = {
948 .start = AT91CAP9_BASE_SSC1,
949 .end = AT91CAP9_BASE_SSC1 + SZ_16K - 1,
950 .flags = IORESOURCE_MEM,
951 },
952 [1] = {
953 .start = AT91CAP9_ID_SSC1,
954 .end = AT91CAP9_ID_SSC1,
955 .flags = IORESOURCE_IRQ,
956 },
957 };
958
959 static struct platform_device at91cap9_ssc1_device = {
960 .name = "ssc",
961 .id = 1,
962 .dev = {
963 .dma_mask = &ssc1_dmamask,
964 .coherent_dma_mask = DMA_BIT_MASK(32),
965 },
966 .resource = ssc1_resources,
967 .num_resources = ARRAY_SIZE(ssc1_resources),
968 };
969
970 static inline void configure_ssc1_pins(unsigned pins)
971 {
972 if (pins & ATMEL_SSC_TF)
973 at91_set_A_periph(AT91_PIN_PB6, 1);
974 if (pins & ATMEL_SSC_TK)
975 at91_set_A_periph(AT91_PIN_PB7, 1);
976 if (pins & ATMEL_SSC_TD)
977 at91_set_A_periph(AT91_PIN_PB8, 1);
978 if (pins & ATMEL_SSC_RD)
979 at91_set_A_periph(AT91_PIN_PB9, 1);
980 if (pins & ATMEL_SSC_RK)
981 at91_set_A_periph(AT91_PIN_PB10, 1);
982 if (pins & ATMEL_SSC_RF)
983 at91_set_A_periph(AT91_PIN_PB11, 1);
984 }
985
986 /*
987 * SSC controllers are accessed through library code, instead of any
988 * kind of all-singing/all-dancing driver. For example one could be
989 * used by a particular I2S audio codec's driver, while another one
990 * on the same system might be used by a custom data capture driver.
991 */
992 void __init at91_add_device_ssc(unsigned id, unsigned pins)
993 {
994 struct platform_device *pdev;
995
996 /*
997 * NOTE: caller is responsible for passing information matching
998 * "pins" to whatever will be using each particular controller.
999 */
1000 switch (id) {
1001 case AT91CAP9_ID_SSC0:
1002 pdev = &at91cap9_ssc0_device;
1003 configure_ssc0_pins(pins);
1004 at91_clock_associate("ssc0_clk", &pdev->dev, "ssc");
1005 break;
1006 case AT91CAP9_ID_SSC1:
1007 pdev = &at91cap9_ssc1_device;
1008 configure_ssc1_pins(pins);
1009 at91_clock_associate("ssc1_clk", &pdev->dev, "ssc");
1010 break;
1011 default:
1012 return;
1013 }
1014
1015 platform_device_register(pdev);
1016 }
1017
1018 #else
1019 void __init at91_add_device_ssc(unsigned id, unsigned pins) {}
1020 #endif
1021
1022
1023 /* --------------------------------------------------------------------
1024 * UART
1025 * -------------------------------------------------------------------- */
1026
1027 #if defined(CONFIG_SERIAL_ATMEL)
1028 static struct resource dbgu_resources[] = {
1029 [0] = {
1030 .start = AT91_VA_BASE_SYS + AT91_DBGU,
1031 .end = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
1032 .flags = IORESOURCE_MEM,
1033 },
1034 [1] = {
1035 .start = AT91_ID_SYS,
1036 .end = AT91_ID_SYS,
1037 .flags = IORESOURCE_IRQ,
1038 },
1039 };
1040
1041 static struct atmel_uart_data dbgu_data = {
1042 .use_dma_tx = 0,
1043 .use_dma_rx = 0, /* DBGU not capable of receive DMA */
1044 .regs = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
1045 };
1046
1047 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
1048
1049 static struct platform_device at91cap9_dbgu_device = {
1050 .name = "atmel_usart",
1051 .id = 0,
1052 .dev = {
1053 .dma_mask = &dbgu_dmamask,
1054 .coherent_dma_mask = DMA_BIT_MASK(32),
1055 .platform_data = &dbgu_data,
1056 },
1057 .resource = dbgu_resources,
1058 .num_resources = ARRAY_SIZE(dbgu_resources),
1059 };
1060
1061 static inline void configure_dbgu_pins(void)
1062 {
1063 at91_set_A_periph(AT91_PIN_PC30, 0); /* DRXD */
1064 at91_set_A_periph(AT91_PIN_PC31, 1); /* DTXD */
1065 }
1066
1067 static struct resource uart0_resources[] = {
1068 [0] = {
1069 .start = AT91CAP9_BASE_US0,
1070 .end = AT91CAP9_BASE_US0 + SZ_16K - 1,
1071 .flags = IORESOURCE_MEM,
1072 },
1073 [1] = {
1074 .start = AT91CAP9_ID_US0,
1075 .end = AT91CAP9_ID_US0,
1076 .flags = IORESOURCE_IRQ,
1077 },
1078 };
1079
1080 static struct atmel_uart_data uart0_data = {
1081 .use_dma_tx = 1,
1082 .use_dma_rx = 1,
1083 };
1084
1085 static u64 uart0_dmamask = DMA_BIT_MASK(32);
1086
1087 static struct platform_device at91cap9_uart0_device = {
1088 .name = "atmel_usart",
1089 .id = 1,
1090 .dev = {
1091 .dma_mask = &uart0_dmamask,
1092 .coherent_dma_mask = DMA_BIT_MASK(32),
1093 .platform_data = &uart0_data,
1094 },
1095 .resource = uart0_resources,
1096 .num_resources = ARRAY_SIZE(uart0_resources),
1097 };
1098
1099 static inline void configure_usart0_pins(unsigned pins)
1100 {
1101 at91_set_A_periph(AT91_PIN_PA22, 1); /* TXD0 */
1102 at91_set_A_periph(AT91_PIN_PA23, 0); /* RXD0 */
1103
1104 if (pins & ATMEL_UART_RTS)
1105 at91_set_A_periph(AT91_PIN_PA24, 0); /* RTS0 */
1106 if (pins & ATMEL_UART_CTS)
1107 at91_set_A_periph(AT91_PIN_PA25, 0); /* CTS0 */
1108 }
1109
1110 static struct resource uart1_resources[] = {
1111 [0] = {
1112 .start = AT91CAP9_BASE_US1,
1113 .end = AT91CAP9_BASE_US1 + SZ_16K - 1,
1114 .flags = IORESOURCE_MEM,
1115 },
1116 [1] = {
1117 .start = AT91CAP9_ID_US1,
1118 .end = AT91CAP9_ID_US1,
1119 .flags = IORESOURCE_IRQ,
1120 },
1121 };
1122
1123 static struct atmel_uart_data uart1_data = {
1124 .use_dma_tx = 1,
1125 .use_dma_rx = 1,
1126 };
1127
1128 static u64 uart1_dmamask = DMA_BIT_MASK(32);
1129
1130 static struct platform_device at91cap9_uart1_device = {
1131 .name = "atmel_usart",
1132 .id = 2,
1133 .dev = {
1134 .dma_mask = &uart1_dmamask,
1135 .coherent_dma_mask = DMA_BIT_MASK(32),
1136 .platform_data = &uart1_data,
1137 },
1138 .resource = uart1_resources,
1139 .num_resources = ARRAY_SIZE(uart1_resources),
1140 };
1141
1142 static inline void configure_usart1_pins(unsigned pins)
1143 {
1144 at91_set_A_periph(AT91_PIN_PD0, 1); /* TXD1 */
1145 at91_set_A_periph(AT91_PIN_PD1, 0); /* RXD1 */
1146
1147 if (pins & ATMEL_UART_RTS)
1148 at91_set_B_periph(AT91_PIN_PD7, 0); /* RTS1 */
1149 if (pins & ATMEL_UART_CTS)
1150 at91_set_B_periph(AT91_PIN_PD8, 0); /* CTS1 */
1151 }
1152
1153 static struct resource uart2_resources[] = {
1154 [0] = {
1155 .start = AT91CAP9_BASE_US2,
1156 .end = AT91CAP9_BASE_US2 + SZ_16K - 1,
1157 .flags = IORESOURCE_MEM,
1158 },
1159 [1] = {
1160 .start = AT91CAP9_ID_US2,
1161 .end = AT91CAP9_ID_US2,
1162 .flags = IORESOURCE_IRQ,
1163 },
1164 };
1165
1166 static struct atmel_uart_data uart2_data = {
1167 .use_dma_tx = 1,
1168 .use_dma_rx = 1,
1169 };
1170
1171 static u64 uart2_dmamask = DMA_BIT_MASK(32);
1172
1173 static struct platform_device at91cap9_uart2_device = {
1174 .name = "atmel_usart",
1175 .id = 3,
1176 .dev = {
1177 .dma_mask = &uart2_dmamask,
1178 .coherent_dma_mask = DMA_BIT_MASK(32),
1179 .platform_data = &uart2_data,
1180 },
1181 .resource = uart2_resources,
1182 .num_resources = ARRAY_SIZE(uart2_resources),
1183 };
1184
1185 static inline void configure_usart2_pins(unsigned pins)
1186 {
1187 at91_set_A_periph(AT91_PIN_PD2, 1); /* TXD2 */
1188 at91_set_A_periph(AT91_PIN_PD3, 0); /* RXD2 */
1189
1190 if (pins & ATMEL_UART_RTS)
1191 at91_set_B_periph(AT91_PIN_PD5, 0); /* RTS2 */
1192 if (pins & ATMEL_UART_CTS)
1193 at91_set_B_periph(AT91_PIN_PD6, 0); /* CTS2 */
1194 }
1195
1196 static struct platform_device *__initdata at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
1197 struct platform_device *atmel_default_console_device; /* the serial console device */
1198
1199 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
1200 {
1201 struct platform_device *pdev;
1202
1203 switch (id) {
1204 case 0: /* DBGU */
1205 pdev = &at91cap9_dbgu_device;
1206 configure_dbgu_pins();
1207 at91_clock_associate("mck", &pdev->dev, "usart");
1208 break;
1209 case AT91CAP9_ID_US0:
1210 pdev = &at91cap9_uart0_device;
1211 configure_usart0_pins(pins);
1212 at91_clock_associate("usart0_clk", &pdev->dev, "usart");
1213 break;
1214 case AT91CAP9_ID_US1:
1215 pdev = &at91cap9_uart1_device;
1216 configure_usart1_pins(pins);
1217 at91_clock_associate("usart1_clk", &pdev->dev, "usart");
1218 break;
1219 case AT91CAP9_ID_US2:
1220 pdev = &at91cap9_uart2_device;
1221 configure_usart2_pins(pins);
1222 at91_clock_associate("usart2_clk", &pdev->dev, "usart");
1223 break;
1224 default:
1225 return;
1226 }
1227 pdev->id = portnr; /* update to mapped ID */
1228
1229 if (portnr < ATMEL_MAX_UART)
1230 at91_uarts[portnr] = pdev;
1231 }
1232
1233 void __init at91_set_serial_console(unsigned portnr)
1234 {
1235 if (portnr < ATMEL_MAX_UART)
1236 atmel_default_console_device = at91_uarts[portnr];
1237 }
1238
1239 void __init at91_add_device_serial(void)
1240 {
1241 int i;
1242
1243 for (i = 0; i < ATMEL_MAX_UART; i++) {
1244 if (at91_uarts[i])
1245 platform_device_register(at91_uarts[i]);
1246 }
1247
1248 if (!atmel_default_console_device)
1249 printk(KERN_INFO "AT91: No default serial console defined.\n");
1250 }
1251 #else
1252 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
1253 void __init at91_set_serial_console(unsigned portnr) {}
1254 void __init at91_add_device_serial(void) {}
1255 #endif
1256
1257
1258 /* -------------------------------------------------------------------- */
1259 /*
1260 * These devices are always present and don't need any board-specific
1261 * setup.
1262 */
1263 static int __init at91_add_standard_devices(void)
1264 {
1265 at91_add_device_rtt();
1266 at91_add_device_watchdog();
1267 at91_add_device_tc();
1268 return 0;
1269 }
1270
1271 arch_initcall(at91_add_standard_devices);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree