1 /*
2 * arch/arm/mach-at91/at91rm9200_devices.c
3 *
4 * Copyright (C) 2005 Thibaut VARENE <varenet@parisc-linux.org>
5 * Copyright (C) 2005 David Brownell
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 */
13 #include <asm/mach/arch.h>
14 #include <asm/mach/map.h>
15
16 #include <linux/dma-mapping.h>
17 #include <linux/platform_device.h>
18 #include <linux/i2c-gpio.h>
19
20 #include <mach/board.h>
21 #include <mach/gpio.h>
22 #include <mach/at91rm9200.h>
23 #include <mach/at91rm9200_mc.h>
24
25 #include "generic.h"
26
27
28 /* --------------------------------------------------------------------
29 * USB Host
30 * -------------------------------------------------------------------- */
31
32 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
33 static u64 ohci_dmamask = DMA_BIT_MASK(32);
34 static struct at91_usbh_data usbh_data;
35
36 static struct resource usbh_resources[] = {
37 [0] = {
38 .start = AT91RM9200_UHP_BASE,
39 .end = AT91RM9200_UHP_BASE + SZ_1M - 1,
40 .flags = IORESOURCE_MEM,
41 },
42 [1] = {
43 .start = AT91RM9200_ID_UHP,
44 .end = AT91RM9200_ID_UHP,
45 .flags = IORESOURCE_IRQ,
46 },
47 };
48
49 static struct platform_device at91rm9200_usbh_device = {
50 .name = "at91_ohci",
51 .id = -1,
52 .dev = {
53 .dma_mask = &ohci_dmamask,
54 .coherent_dma_mask = DMA_BIT_MASK(32),
55 .platform_data = &usbh_data,
56 },
57 .resource = usbh_resources,
58 .num_resources = ARRAY_SIZE(usbh_resources),
59 };
60
61 void __init at91_add_device_usbh(struct at91_usbh_data *data)
62 {
63 if (!data)
64 return;
65
66 usbh_data = *data;
67 platform_device_register(&at91rm9200_usbh_device);
68 }
69 #else
70 void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
71 #endif
72
73
74 /* --------------------------------------------------------------------
75 * USB Device (Gadget)
76 * -------------------------------------------------------------------- */
77
78 #ifdef CONFIG_USB_GADGET_AT91
79 static struct at91_udc_data udc_data;
80
81 static struct resource udc_resources[] = {
82 [0] = {
83 .start = AT91RM9200_BASE_UDP,
84 .end = AT91RM9200_BASE_UDP + SZ_16K - 1,
85 .flags = IORESOURCE_MEM,
86 },
87 [1] = {
88 .start = AT91RM9200_ID_UDP,
89 .end = AT91RM9200_ID_UDP,
90 .flags = IORESOURCE_IRQ,
91 },
92 };
93
94 static struct platform_device at91rm9200_udc_device = {
95 .name = "at91_udc",
96 .id = -1,
97 .dev = {
98 .platform_data = &udc_data,
99 },
100 .resource = udc_resources,
101 .num_resources = ARRAY_SIZE(udc_resources),
102 };
103
104 void __init at91_add_device_udc(struct at91_udc_data *data)
105 {
106 if (!data)
107 return;
108
109 if (data->vbus_pin) {
110 at91_set_gpio_input(data->vbus_pin, 0);
111 at91_set_deglitch(data->vbus_pin, 1);
112 }
113 if (data->pullup_pin)
114 at91_set_gpio_output(data->pullup_pin, 0);
115
116 udc_data = *data;
117 platform_device_register(&at91rm9200_udc_device);
118 }
119 #else
120 void __init at91_add_device_udc(struct at91_udc_data *data) {}
121 #endif
122
123
124 /* --------------------------------------------------------------------
125 * Ethernet
126 * -------------------------------------------------------------------- */
127
128 #if defined(CONFIG_ARM_AT91_ETHER) || defined(CONFIG_ARM_AT91_ETHER_MODULE)
129 static u64 eth_dmamask = DMA_BIT_MASK(32);
130 static struct at91_eth_data eth_data;
131
132 static struct resource eth_resources[] = {
133 [0] = {
134 .start = AT91_VA_BASE_EMAC,
135 .end = AT91_VA_BASE_EMAC + SZ_16K - 1,
136 .flags = IORESOURCE_MEM,
137 },
138 [1] = {
139 .start = AT91RM9200_ID_EMAC,
140 .end = AT91RM9200_ID_EMAC,
141 .flags = IORESOURCE_IRQ,
142 },
143 };
144
145 static struct platform_device at91rm9200_eth_device = {
146 .name = "at91_ether",
147 .id = -1,
148 .dev = {
149 .dma_mask = ð_dmamask,
150 .coherent_dma_mask = DMA_BIT_MASK(32),
151 .platform_data = ð_data,
152 },
153 .resource = eth_resources,
154 .num_resources = ARRAY_SIZE(eth_resources),
155 };
156
157 void __init at91_add_device_eth(struct at91_eth_data *data)
158 {
159 if (!data)
160 return;
161
162 if (data->phy_irq_pin) {
163 at91_set_gpio_input(data->phy_irq_pin, 0);
164 at91_set_deglitch(data->phy_irq_pin, 1);
165 }
166
167 /* Pins used for MII and RMII */
168 at91_set_A_periph(AT91_PIN_PA16, 0); /* EMDIO */
169 at91_set_A_periph(AT91_PIN_PA15, 0); /* EMDC */
170 at91_set_A_periph(AT91_PIN_PA14, 0); /* ERXER */
171 at91_set_A_periph(AT91_PIN_PA13, 0); /* ERX1 */
172 at91_set_A_periph(AT91_PIN_PA12, 0); /* ERX0 */
173 at91_set_A_periph(AT91_PIN_PA11, 0); /* ECRS_ECRSDV */
174 at91_set_A_periph(AT91_PIN_PA10, 0); /* ETX1 */
175 at91_set_A_periph(AT91_PIN_PA9, 0); /* ETX0 */
176 at91_set_A_periph(AT91_PIN_PA8, 0); /* ETXEN */
177 at91_set_A_periph(AT91_PIN_PA7, 0); /* ETXCK_EREFCK */
178
179 if (!data->is_rmii) {
180 at91_set_B_periph(AT91_PIN_PB19, 0); /* ERXCK */
181 at91_set_B_periph(AT91_PIN_PB18, 0); /* ECOL */
182 at91_set_B_periph(AT91_PIN_PB17, 0); /* ERXDV */
183 at91_set_B_periph(AT91_PIN_PB16, 0); /* ERX3 */
184 at91_set_B_periph(AT91_PIN_PB15, 0); /* ERX2 */
185 at91_set_B_periph(AT91_PIN_PB14, 0); /* ETXER */
186 at91_set_B_periph(AT91_PIN_PB13, 0); /* ETX3 */
187 at91_set_B_periph(AT91_PIN_PB12, 0); /* ETX2 */
188 }
189
190 eth_data = *data;
191 platform_device_register(&at91rm9200_eth_device);
192 }
193 #else
194 void __init at91_add_device_eth(struct at91_eth_data *data) {}
195 #endif
196
197
198 /* --------------------------------------------------------------------
199 * Compact Flash / PCMCIA
200 * -------------------------------------------------------------------- */
201
202 #if defined(CONFIG_AT91_CF) || defined(CONFIG_AT91_CF_MODULE)
203 static struct at91_cf_data cf_data;
204
205 #define CF_BASE AT91_CHIPSELECT_4
206
207 static struct resource cf_resources[] = {
208 [0] = {
209 .start = CF_BASE,
210 /* ties up CS4, CS5 and CS6 */
211 .end = CF_BASE + (0x30000000 - 1),
212 .flags = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
213 },
214 };
215
216 static struct platform_device at91rm9200_cf_device = {
217 .name = "at91_cf",
218 .id = -1,
219 .dev = {
220 .platform_data = &cf_data,
221 },
222 .resource = cf_resources,
223 .num_resources = ARRAY_SIZE(cf_resources),
224 };
225
226 void __init at91_add_device_cf(struct at91_cf_data *data)
227 {
228 unsigned int csa;
229
230 if (!data)
231 return;
232
233 data->chipselect = 4; /* can only use EBI ChipSelect 4 */
234
235 /* CF takes over CS4, CS5, CS6 */
236 csa = at91_sys_read(AT91_EBI_CSA);
237 at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS4A_SMC_COMPACTFLASH);
238
239 /*
240 * Static memory controller timing adjustments.
241 * REVISIT: these timings are in terms of MCK cycles, so
242 * when MCK changes (cpufreq etc) so must these values...
243 */
244 at91_sys_write(AT91_SMC_CSR(4),
245 AT91_SMC_ACSS_STD
246 | AT91_SMC_DBW_16
247 | AT91_SMC_BAT
248 | AT91_SMC_WSEN
249 | AT91_SMC_NWS_(32) /* wait states */
250 | AT91_SMC_RWSETUP_(6) /* setup time */
251 | AT91_SMC_RWHOLD_(4) /* hold time */
252 );
253
254 /* input/irq */
255 if (data->irq_pin) {
256 at91_set_gpio_input(data->irq_pin, 1);
257 at91_set_deglitch(data->irq_pin, 1);
258 }
259 at91_set_gpio_input(data->det_pin, 1);
260 at91_set_deglitch(data->det_pin, 1);
261
262 /* outputs, initially off */
263 if (data->vcc_pin)
264 at91_set_gpio_output(data->vcc_pin, 0);
265 at91_set_gpio_output(data->rst_pin, 0);
266
267 /* force poweron defaults for these pins ... */
268 at91_set_A_periph(AT91_PIN_PC9, 0); /* A25/CFRNW */
269 at91_set_A_periph(AT91_PIN_PC10, 0); /* NCS4/CFCS */
270 at91_set_A_periph(AT91_PIN_PC11, 0); /* NCS5/CFCE1 */
271 at91_set_A_periph(AT91_PIN_PC12, 0); /* NCS6/CFCE2 */
272
273 /* nWAIT is _not_ a default setting */
274 at91_set_A_periph(AT91_PIN_PC6, 1); /* nWAIT */
275
276 cf_data = *data;
277 platform_device_register(&at91rm9200_cf_device);
278 }
279 #else
280 void __init at91_add_device_cf(struct at91_cf_data *data) {}
281 #endif
282
283
284 /* --------------------------------------------------------------------
285 * MMC / SD
286 * -------------------------------------------------------------------- */
287
288 #if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
289 static u64 mmc_dmamask = DMA_BIT_MASK(32);
290 static struct at91_mmc_data mmc_data;
291
292 static struct resource mmc_resources[] = {
293 [0] = {
294 .start = AT91RM9200_BASE_MCI,
295 .end = AT91RM9200_BASE_MCI + SZ_16K - 1,
296 .flags = IORESOURCE_MEM,
297 },
298 [1] = {
299 .start = AT91RM9200_ID_MCI,
300 .end = AT91RM9200_ID_MCI,
301 .flags = IORESOURCE_IRQ,
302 },
303 };
304
305 static struct platform_device at91rm9200_mmc_device = {
306 .name = "at91_mci",
307 .id = -1,
308 .dev = {
309 .dma_mask = &mmc_dmamask,
310 .coherent_dma_mask = DMA_BIT_MASK(32),
311 .platform_data = &mmc_data,
312 },
313 .resource = mmc_resources,
314 .num_resources = ARRAY_SIZE(mmc_resources),
315 };
316
317 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
318 {
319 if (!data)
320 return;
321
322 /* input/irq */
323 if (data->det_pin) {
324 at91_set_gpio_input(data->det_pin, 1);
325 at91_set_deglitch(data->det_pin, 1);
326 }
327 if (data->wp_pin)
328 at91_set_gpio_input(data->wp_pin, 1);
329 if (data->vcc_pin)
330 at91_set_gpio_output(data->vcc_pin, 0);
331
332 /* CLK */
333 at91_set_A_periph(AT91_PIN_PA27, 0);
334
335 if (data->slot_b) {
336 /* CMD */
337 at91_set_B_periph(AT91_PIN_PA8, 1);
338
339 /* DAT0, maybe DAT1..DAT3 */
340 at91_set_B_periph(AT91_PIN_PA9, 1);
341 if (data->wire4) {
342 at91_set_B_periph(AT91_PIN_PA10, 1);
343 at91_set_B_periph(AT91_PIN_PA11, 1);
344 at91_set_B_periph(AT91_PIN_PA12, 1);
345 }
346 } else {
347 /* CMD */
348 at91_set_A_periph(AT91_PIN_PA28, 1);
349
350 /* DAT0, maybe DAT1..DAT3 */
351 at91_set_A_periph(AT91_PIN_PA29, 1);
352 if (data->wire4) {
353 at91_set_B_periph(AT91_PIN_PB3, 1);
354 at91_set_B_periph(AT91_PIN_PB4, 1);
355 at91_set_B_periph(AT91_PIN_PB5, 1);
356 }
357 }
358
359 mmc_data = *data;
360 platform_device_register(&at91rm9200_mmc_device);
361 }
362 #else
363 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
364 #endif
365
366
367 /* --------------------------------------------------------------------
368 * NAND / SmartMedia
369 * -------------------------------------------------------------------- */
370
371 #if defined(CONFIG_MTD_NAND_ATMEL) || defined(CONFIG_MTD_NAND_ATMEL_MODULE)
372 static struct atmel_nand_data nand_data;
373
374 #define NAND_BASE AT91_CHIPSELECT_3
375
376 static struct resource nand_resources[] = {
377 {
378 .start = NAND_BASE,
379 .end = NAND_BASE + SZ_256M - 1,
380 .flags = IORESOURCE_MEM,
381 }
382 };
383
384 static struct platform_device at91rm9200_nand_device = {
385 .name = "atmel_nand",
386 .id = -1,
387 .dev = {
388 .platform_data = &nand_data,
389 },
390 .resource = nand_resources,
391 .num_resources = ARRAY_SIZE(nand_resources),
392 };
393
394 void __init at91_add_device_nand(struct atmel_nand_data *data)
395 {
396 unsigned int csa;
397
398 if (!data)
399 return;
400
401 /* enable the address range of CS3 */
402 csa = at91_sys_read(AT91_EBI_CSA);
403 at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS3A_SMC_SMARTMEDIA);
404
405 /* set the bus interface characteristics */
406 at91_sys_write(AT91_SMC_CSR(3), AT91_SMC_ACSS_STD | AT91_SMC_DBW_8 | AT91_SMC_WSEN
407 | AT91_SMC_NWS_(5)
408 | AT91_SMC_TDF_(1)
409 | AT91_SMC_RWSETUP_(0) /* tDS Data Set up Time 30 - ns */
410 | AT91_SMC_RWHOLD_(1) /* tDH Data Hold Time 20 - ns */
411 );
412
413 /* enable pin */
414 if (data->enable_pin)
415 at91_set_gpio_output(data->enable_pin, 1);
416
417 /* ready/busy pin */
418 if (data->rdy_pin)
419 at91_set_gpio_input(data->rdy_pin, 1);
420
421 /* card detect pin */
422 if (data->det_pin)
423 at91_set_gpio_input(data->det_pin, 1);
424
425 at91_set_A_periph(AT91_PIN_PC1, 0); /* SMOE */
426 at91_set_A_periph(AT91_PIN_PC3, 0); /* SMWE */
427
428 nand_data = *data;
429 platform_device_register(&at91rm9200_nand_device);
430 }
431 #else
432 void __init at91_add_device_nand(struct atmel_nand_data *data) {}
433 #endif
434
435
436 /* --------------------------------------------------------------------
437 * TWI (i2c)
438 * -------------------------------------------------------------------- */
439
440 /*
441 * Prefer the GPIO code since the TWI controller isn't robust
442 * (gets overruns and underruns under load) and can only issue
443 * repeated STARTs in one scenario (the driver doesn't yet handle them).
444 */
445 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
446
447 static struct i2c_gpio_platform_data pdata = {
448 .sda_pin = AT91_PIN_PA25,
449 .sda_is_open_drain = 1,
450 .scl_pin = AT91_PIN_PA26,
451 .scl_is_open_drain = 1,
452 .udelay = 2, /* ~100 kHz */
453 };
454
455 static struct platform_device at91rm9200_twi_device = {
456 .name = "i2c-gpio",
457 .id = -1,
458 .dev.platform_data = &pdata,
459 };
460
461 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
462 {
463 at91_set_GPIO_periph(AT91_PIN_PA25, 1); /* TWD (SDA) */
464 at91_set_multi_drive(AT91_PIN_PA25, 1);
465
466 at91_set_GPIO_periph(AT91_PIN_PA26, 1); /* TWCK (SCL) */
467 at91_set_multi_drive(AT91_PIN_PA26, 1);
468
469 i2c_register_board_info(0, devices, nr_devices);
470 platform_device_register(&at91rm9200_twi_device);
471 }
472
473 #elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
474
475 static struct resource twi_resources[] = {
476 [0] = {
477 .start = AT91RM9200_BASE_TWI,
478 .end = AT91RM9200_BASE_TWI + SZ_16K - 1,
479 .flags = IORESOURCE_MEM,
480 },
481 [1] = {
482 .start = AT91RM9200_ID_TWI,
483 .end = AT91RM9200_ID_TWI,
484 .flags = IORESOURCE_IRQ,
485 },
486 };
487
488 static struct platform_device at91rm9200_twi_device = {
489 .name = "at91_i2c",
490 .id = -1,
491 .resource = twi_resources,
492 .num_resources = ARRAY_SIZE(twi_resources),
493 };
494
495 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
496 {
497 /* pins used for TWI interface */
498 at91_set_A_periph(AT91_PIN_PA25, 0); /* TWD */
499 at91_set_multi_drive(AT91_PIN_PA25, 1);
500
501 at91_set_A_periph(AT91_PIN_PA26, 0); /* TWCK */
502 at91_set_multi_drive(AT91_PIN_PA26, 1);
503
504 i2c_register_board_info(0, devices, nr_devices);
505 platform_device_register(&at91rm9200_twi_device);
506 }
507 #else
508 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
509 #endif
510
511
512 /* --------------------------------------------------------------------
513 * SPI
514 * -------------------------------------------------------------------- */
515
516 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
517 static u64 spi_dmamask = DMA_BIT_MASK(32);
518
519 static struct resource spi_resources[] = {
520 [0] = {
521 .start = AT91RM9200_BASE_SPI,
522 .end = AT91RM9200_BASE_SPI + SZ_16K - 1,
523 .flags = IORESOURCE_MEM,
524 },
525 [1] = {
526 .start = AT91RM9200_ID_SPI,
527 .end = AT91RM9200_ID_SPI,
528 .flags = IORESOURCE_IRQ,
529 },
530 };
531
532 static struct platform_device at91rm9200_spi_device = {
533 .name = "atmel_spi",
534 .id = 0,
535 .dev = {
536 .dma_mask = &spi_dmamask,
537 .coherent_dma_mask = DMA_BIT_MASK(32),
538 },
539 .resource = spi_resources,
540 .num_resources = ARRAY_SIZE(spi_resources),
541 };
542
543 static const unsigned spi_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
544
545 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
546 {
547 int i;
548 unsigned long cs_pin;
549
550 at91_set_A_periph(AT91_PIN_PA0, 0); /* MISO */
551 at91_set_A_periph(AT91_PIN_PA1, 0); /* MOSI */
552 at91_set_A_periph(AT91_PIN_PA2, 0); /* SPCK */
553
554 /* Enable SPI chip-selects */
555 for (i = 0; i < nr_devices; i++) {
556 if (devices[i].controller_data)
557 cs_pin = (unsigned long) devices[i].controller_data;
558 else
559 cs_pin = spi_standard_cs[devices[i].chip_select];
560
561 if (devices[i].chip_select == 0) /* for CS0 errata */
562 at91_set_A_periph(cs_pin, 0);
563 else
564 at91_set_gpio_output(cs_pin, 1);
565
566
567 /* pass chip-select pin to driver */
568 devices[i].controller_data = (void *) cs_pin;
569 }
570
571 spi_register_board_info(devices, nr_devices);
572 platform_device_register(&at91rm9200_spi_device);
573 }
574 #else
575 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
576 #endif
577
578
579 /* --------------------------------------------------------------------
580 * Timer/Counter blocks
581 * -------------------------------------------------------------------- */
582
583 #ifdef CONFIG_ATMEL_TCLIB
584
585 static struct resource tcb0_resources[] = {
586 [0] = {
587 .start = AT91RM9200_BASE_TCB0,
588 .end = AT91RM9200_BASE_TCB0 + SZ_16K - 1,
589 .flags = IORESOURCE_MEM,
590 },
591 [1] = {
592 .start = AT91RM9200_ID_TC0,
593 .end = AT91RM9200_ID_TC0,
594 .flags = IORESOURCE_IRQ,
595 },
596 [2] = {
597 .start = AT91RM9200_ID_TC1,
598 .end = AT91RM9200_ID_TC1,
599 .flags = IORESOURCE_IRQ,
600 },
601 [3] = {
602 .start = AT91RM9200_ID_TC2,
603 .end = AT91RM9200_ID_TC2,
604 .flags = IORESOURCE_IRQ,
605 },
606 };
607
608 static struct platform_device at91rm9200_tcb0_device = {
609 .name = "atmel_tcb",
610 .id = 0,
611 .resource = tcb0_resources,
612 .num_resources = ARRAY_SIZE(tcb0_resources),
613 };
614
615 static struct resource tcb1_resources[] = {
616 [0] = {
617 .start = AT91RM9200_BASE_TCB1,
618 .end = AT91RM9200_BASE_TCB1 + SZ_16K - 1,
619 .flags = IORESOURCE_MEM,
620 },
621 [1] = {
622 .start = AT91RM9200_ID_TC3,
623 .end = AT91RM9200_ID_TC3,
624 .flags = IORESOURCE_IRQ,
625 },
626 [2] = {
627 .start = AT91RM9200_ID_TC4,
628 .end = AT91RM9200_ID_TC4,
629 .flags = IORESOURCE_IRQ,
630 },
631 [3] = {
632 .start = AT91RM9200_ID_TC5,
633 .end = AT91RM9200_ID_TC5,
634 .flags = IORESOURCE_IRQ,
635 },
636 };
637
638 static struct platform_device at91rm9200_tcb1_device = {
639 .name = "atmel_tcb",
640 .id = 1,
641 .resource = tcb1_resources,
642 .num_resources = ARRAY_SIZE(tcb1_resources),
643 };
644
645 static void __init at91_add_device_tc(void)
646 {
647 /* this chip has a separate clock and irq for each TC channel */
648 at91_clock_associate("tc0_clk", &at91rm9200_tcb0_device.dev, "t0_clk");
649 at91_clock_associate("tc1_clk", &at91rm9200_tcb0_device.dev, "t1_clk");
650 at91_clock_associate("tc2_clk", &at91rm9200_tcb0_device.dev, "t2_clk");
651 platform_device_register(&at91rm9200_tcb0_device);
652
653 at91_clock_associate("tc3_clk", &at91rm9200_tcb1_device.dev, "t0_clk");
654 at91_clock_associate("tc4_clk", &at91rm9200_tcb1_device.dev, "t1_clk");
655 at91_clock_associate("tc5_clk", &at91rm9200_tcb1_device.dev, "t2_clk");
656 platform_device_register(&at91rm9200_tcb1_device);
657 }
658 #else
659 static void __init at91_add_device_tc(void) { }
660 #endif
661
662
663 /* --------------------------------------------------------------------
664 * RTC
665 * -------------------------------------------------------------------- */
666
667 #if defined(CONFIG_RTC_DRV_AT91RM9200) || defined(CONFIG_RTC_DRV_AT91RM9200_MODULE)
668 static struct platform_device at91rm9200_rtc_device = {
669 .name = "at91_rtc",
670 .id = -1,
671 .num_resources = 0,
672 };
673
674 static void __init at91_add_device_rtc(void)
675 {
676 platform_device_register(&at91rm9200_rtc_device);
677 }
678 #else
679 static void __init at91_add_device_rtc(void) {}
680 #endif
681
682
683 /* --------------------------------------------------------------------
684 * Watchdog
685 * -------------------------------------------------------------------- */
686
687 #if defined(CONFIG_AT91RM9200_WATCHDOG) || defined(CONFIG_AT91RM9200_WATCHDOG_MODULE)
688 static struct platform_device at91rm9200_wdt_device = {
689 .name = "at91_wdt",
690 .id = -1,
691 .num_resources = 0,
692 };
693
694 static void __init at91_add_device_watchdog(void)
695 {
696 platform_device_register(&at91rm9200_wdt_device);
697 }
698 #else
699 static void __init at91_add_device_watchdog(void) {}
700 #endif
701
702
703 /* --------------------------------------------------------------------
704 * SSC -- Synchronous Serial Controller
705 * -------------------------------------------------------------------- */
706
707 #if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE)
708 static u64 ssc0_dmamask = DMA_BIT_MASK(32);
709
710 static struct resource ssc0_resources[] = {
711 [0] = {
712 .start = AT91RM9200_BASE_SSC0,
713 .end = AT91RM9200_BASE_SSC0 + SZ_16K - 1,
714 .flags = IORESOURCE_MEM,
715 },
716 [1] = {
717 .start = AT91RM9200_ID_SSC0,
718 .end = AT91RM9200_ID_SSC0,
719 .flags = IORESOURCE_IRQ,
720 },
721 };
722
723 static struct platform_device at91rm9200_ssc0_device = {
724 .name = "ssc",
725 .id = 0,
726 .dev = {
727 .dma_mask = &ssc0_dmamask,
728 .coherent_dma_mask = DMA_BIT_MASK(32),
729 },
730 .resource = ssc0_resources,
731 .num_resources = ARRAY_SIZE(ssc0_resources),
732 };
733
734 static inline void configure_ssc0_pins(unsigned pins)
735 {
736 if (pins & ATMEL_SSC_TF)
737 at91_set_A_periph(AT91_PIN_PB0, 1);
738 if (pins & ATMEL_SSC_TK)
739 at91_set_A_periph(AT91_PIN_PB1, 1);
740 if (pins & ATMEL_SSC_TD)
741 at91_set_A_periph(AT91_PIN_PB2, 1);
742 if (pins & ATMEL_SSC_RD)
743 at91_set_A_periph(AT91_PIN_PB3, 1);
744 if (pins & ATMEL_SSC_RK)
745 at91_set_A_periph(AT91_PIN_PB4, 1);
746 if (pins & ATMEL_SSC_RF)
747 at91_set_A_periph(AT91_PIN_PB5, 1);
748 }
749
750 static u64 ssc1_dmamask = DMA_BIT_MASK(32);
751
752 static struct resource ssc1_resources[] = {
753 [0] = {
754 .start = AT91RM9200_BASE_SSC1,
755 .end = AT91RM9200_BASE_SSC1 + SZ_16K - 1,
756 .flags = IORESOURCE_MEM,
757 },
758 [1] = {
759 .start = AT91RM9200_ID_SSC1,
760 .end = AT91RM9200_ID_SSC1,
761 .flags = IORESOURCE_IRQ,
762 },
763 };
764
765 static struct platform_device at91rm9200_ssc1_device = {
766 .name = "ssc",
767 .id = 1,
768 .dev = {
769 .dma_mask = &ssc1_dmamask,
770 .coherent_dma_mask = DMA_BIT_MASK(32),
771 },
772 .resource = ssc1_resources,
773 .num_resources = ARRAY_SIZE(ssc1_resources),
774 };
775
776 static inline void configure_ssc1_pins(unsigned pins)
777 {
778 if (pins & ATMEL_SSC_TF)
779 at91_set_A_periph(AT91_PIN_PB6, 1);
780 if (pins & ATMEL_SSC_TK)
781 at91_set_A_periph(AT91_PIN_PB7, 1);
782 if (pins & ATMEL_SSC_TD)
783 at91_set_A_periph(AT91_PIN_PB8, 1);
784 if (pins & ATMEL_SSC_RD)
785 at91_set_A_periph(AT91_PIN_PB9, 1);
786 if (pins & ATMEL_SSC_RK)
787 at91_set_A_periph(AT91_PIN_PB10, 1);
788 if (pins & ATMEL_SSC_RF)
789 at91_set_A_periph(AT91_PIN_PB11, 1);
790 }
791
792 static u64 ssc2_dmamask = DMA_BIT_MASK(32);
793
794 static struct resource ssc2_resources[] = {
795 [0] = {
796 .start = AT91RM9200_BASE_SSC2,
797 .end = AT91RM9200_BASE_SSC2 + SZ_16K - 1,
798 .flags = IORESOURCE_MEM,
799 },
800 [1] = {
801 .start = AT91RM9200_ID_SSC2,
802 .end = AT91RM9200_ID_SSC2,
803 .flags = IORESOURCE_IRQ,
804 },
805 };
806
807 static struct platform_device at91rm9200_ssc2_device = {
808 .name = "ssc",
809 .id = 2,
810 .dev = {
811 .dma_mask = &ssc2_dmamask,
812 .coherent_dma_mask = DMA_BIT_MASK(32),
813 },
814 .resource = ssc2_resources,
815 .num_resources = ARRAY_SIZE(ssc2_resources),
816 };
817
818 static inline void configure_ssc2_pins(unsigned pins)
819 {
820 if (pins & ATMEL_SSC_TF)
821 at91_set_A_periph(AT91_PIN_PB12, 1);
822 if (pins & ATMEL_SSC_TK)
823 at91_set_A_periph(AT91_PIN_PB13, 1);
824 if (pins & ATMEL_SSC_TD)
825 at91_set_A_periph(AT91_PIN_PB14, 1);
826 if (pins & ATMEL_SSC_RD)
827 at91_set_A_periph(AT91_PIN_PB15, 1);
828 if (pins & ATMEL_SSC_RK)
829 at91_set_A_periph(AT91_PIN_PB16, 1);
830 if (pins & ATMEL_SSC_RF)
831 at91_set_A_periph(AT91_PIN_PB17, 1);
832 }
833
834 /*
835 * SSC controllers are accessed through library code, instead of any
836 * kind of all-singing/all-dancing driver. For example one could be
837 * used by a particular I2S audio codec's driver, while another one
838 * on the same system might be used by a custom data capture driver.
839 */
840 void __init at91_add_device_ssc(unsigned id, unsigned pins)
841 {
842 struct platform_device *pdev;
843
844 /*
845 * NOTE: caller is responsible for passing information matching
846 * "pins" to whatever will be using each particular controller.
847 */
848 switch (id) {
849 case AT91RM9200_ID_SSC0:
850 pdev = &at91rm9200_ssc0_device;
851 configure_ssc0_pins(pins);
852 at91_clock_associate("ssc0_clk", &pdev->dev, "ssc");
853 break;
854 case AT91RM9200_ID_SSC1:
855 pdev = &at91rm9200_ssc1_device;
856 configure_ssc1_pins(pins);
857 at91_clock_associate("ssc1_clk", &pdev->dev, "ssc");
858 break;
859 case AT91RM9200_ID_SSC2:
860 pdev = &at91rm9200_ssc2_device;
861 configure_ssc2_pins(pins);
862 at91_clock_associate("ssc2_clk", &pdev->dev, "ssc");
863 break;
864 default:
865 return;
866 }
867
868 platform_device_register(pdev);
869 }
870
871 #else
872 void __init at91_add_device_ssc(unsigned id, unsigned pins) {}
873 #endif
874
875
876 /* --------------------------------------------------------------------
877 * UART
878 * -------------------------------------------------------------------- */
879
880 #if defined(CONFIG_SERIAL_ATMEL)
881 static struct resource dbgu_resources[] = {
882 [0] = {
883 .start = AT91_VA_BASE_SYS + AT91_DBGU,
884 .end = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
885 .flags = IORESOURCE_MEM,
886 },
887 [1] = {
888 .start = AT91_ID_SYS,
889 .end = AT91_ID_SYS,
890 .flags = IORESOURCE_IRQ,
891 },
892 };
893
894 static struct atmel_uart_data dbgu_data = {
895 .use_dma_tx = 0,
896 .use_dma_rx = 0, /* DBGU not capable of receive DMA */
897 .regs = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
898 };
899
900 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
901
902 static struct platform_device at91rm9200_dbgu_device = {
903 .name = "atmel_usart",
904 .id = 0,
905 .dev = {
906 .dma_mask = &dbgu_dmamask,
907 .coherent_dma_mask = DMA_BIT_MASK(32),
908 .platform_data = &dbgu_data,
909 },
910 .resource = dbgu_resources,
911 .num_resources = ARRAY_SIZE(dbgu_resources),
912 };
913
914 static inline void configure_dbgu_pins(void)
915 {
916 at91_set_A_periph(AT91_PIN_PA30, 0); /* DRXD */
917 at91_set_A_periph(AT91_PIN_PA31, 1); /* DTXD */
918 }
919
920 static struct resource uart0_resources[] = {
921 [0] = {
922 .start = AT91RM9200_BASE_US0,
923 .end = AT91RM9200_BASE_US0 + SZ_16K - 1,
924 .flags = IORESOURCE_MEM,
925 },
926 [1] = {
927 .start = AT91RM9200_ID_US0,
928 .end = AT91RM9200_ID_US0,
929 .flags = IORESOURCE_IRQ,
930 },
931 };
932
933 static struct atmel_uart_data uart0_data = {
934 .use_dma_tx = 1,
935 .use_dma_rx = 1,
936 };
937
938 static u64 uart0_dmamask = DMA_BIT_MASK(32);
939
940 static struct platform_device at91rm9200_uart0_device = {
941 .name = "atmel_usart",
942 .id = 1,
943 .dev = {
944 .dma_mask = &uart0_dmamask,
945 .coherent_dma_mask = DMA_BIT_MASK(32),
946 .platform_data = &uart0_data,
947 },
948 .resource = uart0_resources,
949 .num_resources = ARRAY_SIZE(uart0_resources),
950 };
951
952 static inline void configure_usart0_pins(unsigned pins)
953 {
954 at91_set_A_periph(AT91_PIN_PA17, 1); /* TXD0 */
955 at91_set_A_periph(AT91_PIN_PA18, 0); /* RXD0 */
956
957 if (pins & ATMEL_UART_CTS)
958 at91_set_A_periph(AT91_PIN_PA20, 0); /* CTS0 */
959
960 if (pins & ATMEL_UART_RTS) {
961 /*
962 * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
963 * We need to drive the pin manually. Default is off (RTS is active low).
964 */
965 at91_set_gpio_output(AT91_PIN_PA21, 1);
966 }
967 }
968
969 static struct resource uart1_resources[] = {
970 [0] = {
971 .start = AT91RM9200_BASE_US1,
972 .end = AT91RM9200_BASE_US1 + SZ_16K - 1,
973 .flags = IORESOURCE_MEM,
974 },
975 [1] = {
976 .start = AT91RM9200_ID_US1,
977 .end = AT91RM9200_ID_US1,
978 .flags = IORESOURCE_IRQ,
979 },
980 };
981
982 static struct atmel_uart_data uart1_data = {
983 .use_dma_tx = 1,
984 .use_dma_rx = 1,
985 };
986
987 static u64 uart1_dmamask = DMA_BIT_MASK(32);
988
989 static struct platform_device at91rm9200_uart1_device = {
990 .name = "atmel_usart",
991 .id = 2,
992 .dev = {
993 .dma_mask = &uart1_dmamask,
994 .coherent_dma_mask = DMA_BIT_MASK(32),
995 .platform_data = &uart1_data,
996 },
997 .resource = uart1_resources,
998 .num_resources = ARRAY_SIZE(uart1_resources),
999 };
1000
1001 static inline void configure_usart1_pins(unsigned pins)
1002 {
1003 at91_set_A_periph(AT91_PIN_PB20, 1); /* TXD1 */
1004 at91_set_A_periph(AT91_PIN_PB21, 0); /* RXD1 */
1005
1006 if (pins & ATMEL_UART_RI)
1007 at91_set_A_periph(AT91_PIN_PB18, 0); /* RI1 */
1008 if (pins & ATMEL_UART_DTR)
1009 at91_set_A_periph(AT91_PIN_PB19, 0); /* DTR1 */
1010 if (pins & ATMEL_UART_DCD)
1011 at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD1 */
1012 if (pins & ATMEL_UART_CTS)
1013 at91_set_A_periph(AT91_PIN_PB24, 0); /* CTS1 */
1014 if (pins & ATMEL_UART_DSR)
1015 at91_set_A_periph(AT91_PIN_PB25, 0); /* DSR1 */
1016 if (pins & ATMEL_UART_RTS)
1017 at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS1 */
1018 }
1019
1020 static struct resource uart2_resources[] = {
1021 [0] = {
1022 .start = AT91RM9200_BASE_US2,
1023 .end = AT91RM9200_BASE_US2 + SZ_16K - 1,
1024 .flags = IORESOURCE_MEM,
1025 },
1026 [1] = {
1027 .start = AT91RM9200_ID_US2,
1028 .end = AT91RM9200_ID_US2,
1029 .flags = IORESOURCE_IRQ,
1030 },
1031 };
1032
1033 static struct atmel_uart_data uart2_data = {
1034 .use_dma_tx = 1,
1035 .use_dma_rx = 1,
1036 };
1037
1038 static u64 uart2_dmamask = DMA_BIT_MASK(32);
1039
1040 static struct platform_device at91rm9200_uart2_device = {
1041 .name = "atmel_usart",
1042 .id = 3,
1043 .dev = {
1044 .dma_mask = &uart2_dmamask,
1045 .coherent_dma_mask = DMA_BIT_MASK(32),
1046 .platform_data = &uart2_data,
1047 },
1048 .resource = uart2_resources,
1049 .num_resources = ARRAY_SIZE(uart2_resources),
1050 };
1051
1052 static inline void configure_usart2_pins(unsigned pins)
1053 {
1054 at91_set_A_periph(AT91_PIN_PA22, 0); /* RXD2 */
1055 at91_set_A_periph(AT91_PIN_PA23, 1); /* TXD2 */
1056
1057 if (pins & ATMEL_UART_CTS)
1058 at91_set_B_periph(AT91_PIN_PA30, 0); /* CTS2 */
1059 if (pins & ATMEL_UART_RTS)
1060 at91_set_B_periph(AT91_PIN_PA31, 0); /* RTS2 */
1061 }
1062
1063 static struct resource uart3_resources[] = {
1064 [0] = {
1065 .start = AT91RM9200_BASE_US3,
1066 .end = AT91RM9200_BASE_US3 + SZ_16K - 1,
1067 .flags = IORESOURCE_MEM,
1068 },
1069 [1] = {
1070 .start = AT91RM9200_ID_US3,
1071 .end = AT91RM9200_ID_US3,
1072 .flags = IORESOURCE_IRQ,
1073 },
1074 };
1075
1076 static struct atmel_uart_data uart3_data = {
1077 .use_dma_tx = 1,
1078 .use_dma_rx = 1,
1079 };
1080
1081 static u64 uart3_dmamask = DMA_BIT_MASK(32);
1082
1083 static struct platform_device at91rm9200_uart3_device = {
1084 .name = "atmel_usart",
1085 .id = 4,
1086 .dev = {
1087 .dma_mask = &uart3_dmamask,
1088 .coherent_dma_mask = DMA_BIT_MASK(32),
1089 .platform_data = &uart3_data,
1090 },
1091 .resource = uart3_resources,
1092 .num_resources = ARRAY_SIZE(uart3_resources),
1093 };
1094
1095 static inline void configure_usart3_pins(unsigned pins)
1096 {
1097 at91_set_B_periph(AT91_PIN_PA5, 1); /* TXD3 */
1098 at91_set_B_periph(AT91_PIN_PA6, 0); /* RXD3 */
1099
1100 if (pins & ATMEL_UART_CTS)
1101 at91_set_B_periph(AT91_PIN_PB1, 0); /* CTS3 */
1102 if (pins & ATMEL_UART_RTS)
1103 at91_set_B_periph(AT91_PIN_PB0, 0); /* RTS3 */
1104 }
1105
1106 static struct platform_device *__initdata at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
1107 struct platform_device *atmel_default_console_device; /* the serial console device */
1108
1109 void __init __deprecated at91_init_serial(struct at91_uart_config *config)
1110 {
1111 int i;
1112
1113 /* Fill in list of supported UARTs */
1114 for (i = 0; i < config->nr_tty; i++) {
1115 switch (config->tty_map[i]) {
1116 case 0:
1117 configure_usart0_pins(ATMEL_UART_CTS | ATMEL_UART_RTS);
1118 at91_uarts[i] = &at91rm9200_uart0_device;
1119 at91_clock_associate("usart0_clk", &at91rm9200_uart0_device.dev, "usart");
1120 break;
1121 case 1:
1122 configure_usart1_pins(ATMEL_UART_CTS | ATMEL_UART_RTS | ATMEL_UART_DSR | ATMEL_UART_DTR | ATMEL_UART_DCD | ATMEL_UART_RI);
1123 at91_uarts[i] = &at91rm9200_uart1_device;
1124 at91_clock_associate("usart1_clk", &at91rm9200_uart1_device.dev, "usart");
1125 break;
1126 case 2:
1127 configure_usart2_pins(0);
1128 at91_uarts[i] = &at91rm9200_uart2_device;
1129 at91_clock_associate("usart2_clk", &at91rm9200_uart2_device.dev, "usart");
1130 break;
1131 case 3:
1132 configure_usart3_pins(0);
1133 at91_uarts[i] = &at91rm9200_uart3_device;
1134 at91_clock_associate("usart3_clk", &at91rm9200_uart3_device.dev, "usart");
1135 break;
1136 case 4:
1137 configure_dbgu_pins();
1138 at91_uarts[i] = &at91rm9200_dbgu_device;
1139 at91_clock_associate("mck", &at91rm9200_dbgu_device.dev, "usart");
1140 break;
1141 default:
1142 continue;
1143 }
1144 at91_uarts[i]->id = i; /* update ID number to mapped ID */
1145 }
1146
1147 /* Set serial console device */
1148 if (config->console_tty < ATMEL_MAX_UART)
1149 atmel_default_console_device = at91_uarts[config->console_tty];
1150 if (!atmel_default_console_device)
1151 printk(KERN_INFO "AT91: No default serial console defined.\n");
1152 }
1153
1154 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
1155 {
1156 struct platform_device *pdev;
1157
1158 switch (id) {
1159 case 0: /* DBGU */
1160 pdev = &at91rm9200_dbgu_device;
1161 configure_dbgu_pins();
1162 at91_clock_associate("mck", &pdev->dev, "usart");
1163 break;
1164 case AT91RM9200_ID_US0:
1165 pdev = &at91rm9200_uart0_device;
1166 configure_usart0_pins(pins);
1167 at91_clock_associate("usart0_clk", &pdev->dev, "usart");
1168 break;
1169 case AT91RM9200_ID_US1:
1170 pdev = &at91rm9200_uart1_device;
1171 configure_usart1_pins(pins);
1172 at91_clock_associate("usart1_clk", &pdev->dev, "usart");
1173 break;
1174 case AT91RM9200_ID_US2:
1175 pdev = &at91rm9200_uart2_device;
1176 configure_usart2_pins(pins);
1177 at91_clock_associate("usart2_clk", &pdev->dev, "usart");
1178 break;
1179 case AT91RM9200_ID_US3:
1180 pdev = &at91rm9200_uart3_device;
1181 configure_usart3_pins(pins);
1182 at91_clock_associate("usart3_clk", &pdev->dev, "usart");
1183 break;
1184 default:
1185 return;
1186 }
1187 pdev->id = portnr; /* update to mapped ID */
1188
1189 if (portnr < ATMEL_MAX_UART)
1190 at91_uarts[portnr] = pdev;
1191 }
1192
1193 void __init at91_set_serial_console(unsigned portnr)
1194 {
1195 if (portnr < ATMEL_MAX_UART)
1196 atmel_default_console_device = at91_uarts[portnr];
1197 }
1198
1199 void __init at91_add_device_serial(void)
1200 {
1201 int i;
1202
1203 for (i = 0; i < ATMEL_MAX_UART; i++) {
1204 if (at91_uarts[i])
1205 platform_device_register(at91_uarts[i]);
1206 }
1207
1208 if (!atmel_default_console_device)
1209 printk(KERN_INFO "AT91: No default serial console defined.\n");
1210 }
1211 #else
1212 void __init __deprecated at91_init_serial(struct at91_uart_config *config) {}
1213 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
1214 void __init at91_set_serial_console(unsigned portnr) {}
1215 void __init at91_add_device_serial(void) {}
1216 #endif
1217
1218
1219 /* -------------------------------------------------------------------- */
1220
1221 /*
1222 * These devices are always present and don't need any board-specific
1223 * setup.
1224 */
1225 static int __init at91_add_standard_devices(void)
1226 {
1227 at91_add_device_rtc();
1228 at91_add_device_watchdog();
1229 at91_add_device_tc();
1230 return 0;
1231 }
1232
1233 arch_initcall(at91_add_standard_devices);
1234
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