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serial: pxa: fine-tune clk useage
[linux/fpc-iii.git] / arch / arm / mach-at91 / at91rm9200_devices.c
blob3ebc9792560cebed75a53883e42e774742c5660c
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/gpio.h>
18 #include <linux/platform_device.h>
19 #include <linux/i2c-gpio.h>
20
21 #include <mach/at91rm9200.h>
22 #include <mach/at91rm9200_mc.h>
23 #include <mach/at91_ramc.h>
24
25 #include "board.h"
26 #include "generic.h"
27
28
29 /* --------------------------------------------------------------------
30 * USB Host
31 * -------------------------------------------------------------------- */
32
33 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
34 static u64 ohci_dmamask = DMA_BIT_MASK(32);
35 static struct at91_usbh_data usbh_data;
36
37 static struct resource usbh_resources[] = {
38 [0] = {
39 .start = AT91RM9200_UHP_BASE,
40 .end = AT91RM9200_UHP_BASE + SZ_1M - 1,
41 .flags = IORESOURCE_MEM,
42 },
43 [1] = {
44 .start = NR_IRQS_LEGACY + AT91RM9200_ID_UHP,
45 .end = NR_IRQS_LEGACY + AT91RM9200_ID_UHP,
46 .flags = IORESOURCE_IRQ,
47 },
48 };
49
50 static struct platform_device at91rm9200_usbh_device = {
51 .name = "at91_ohci",
52 .id = -1,
53 .dev = {
54 .dma_mask = &ohci_dmamask,
55 .coherent_dma_mask = DMA_BIT_MASK(32),
56 .platform_data = &usbh_data,
57 },
58 .resource = usbh_resources,
59 .num_resources = ARRAY_SIZE(usbh_resources),
60 };
61
62 void __init at91_add_device_usbh(struct at91_usbh_data *data)
63 {
64 int i;
65
66 if (!data)
67 return;
68
69 /* Enable overcurrent notification */
70 for (i = 0; i < data->ports; i++) {
71 if (gpio_is_valid(data->overcurrent_pin[i]))
72 at91_set_gpio_input(data->overcurrent_pin[i], 1);
73 }
74
75 usbh_data = *data;
76 platform_device_register(&at91rm9200_usbh_device);
77 }
78 #else
79 void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
80 #endif
81
82
83 /* --------------------------------------------------------------------
84 * USB Device (Gadget)
85 * -------------------------------------------------------------------- */
86
87 #if defined(CONFIG_USB_AT91) || defined(CONFIG_USB_AT91_MODULE)
88 static struct at91_udc_data udc_data;
89
90 static struct resource udc_resources[] = {
91 [0] = {
92 .start = AT91RM9200_BASE_UDP,
93 .end = AT91RM9200_BASE_UDP + SZ_16K - 1,
94 .flags = IORESOURCE_MEM,
95 },
96 [1] = {
97 .start = NR_IRQS_LEGACY + AT91RM9200_ID_UDP,
98 .end = NR_IRQS_LEGACY + AT91RM9200_ID_UDP,
99 .flags = IORESOURCE_IRQ,
100 },
101 };
102
103 static struct platform_device at91rm9200_udc_device = {
104 .name = "at91_udc",
105 .id = -1,
106 .dev = {
107 .platform_data = &udc_data,
108 },
109 .resource = udc_resources,
110 .num_resources = ARRAY_SIZE(udc_resources),
111 };
112
113 void __init at91_add_device_udc(struct at91_udc_data *data)
114 {
115 if (!data)
116 return;
117
118 if (gpio_is_valid(data->vbus_pin)) {
119 at91_set_gpio_input(data->vbus_pin, 0);
120 at91_set_deglitch(data->vbus_pin, 1);
121 }
122 if (gpio_is_valid(data->pullup_pin))
123 at91_set_gpio_output(data->pullup_pin, 0);
124
125 udc_data = *data;
126 platform_device_register(&at91rm9200_udc_device);
127 }
128 #else
129 void __init at91_add_device_udc(struct at91_udc_data *data) {}
130 #endif
131
132
133 /* --------------------------------------------------------------------
134 * Ethernet
135 * -------------------------------------------------------------------- */
136
137 #if defined(CONFIG_ARM_AT91_ETHER) || defined(CONFIG_ARM_AT91_ETHER_MODULE)
138 static u64 eth_dmamask = DMA_BIT_MASK(32);
139 static struct macb_platform_data eth_data;
140
141 static struct resource eth_resources[] = {
142 [0] = {
143 .start = AT91RM9200_BASE_EMAC,
144 .end = AT91RM9200_BASE_EMAC + SZ_16K - 1,
145 .flags = IORESOURCE_MEM,
146 },
147 [1] = {
148 .start = NR_IRQS_LEGACY + AT91RM9200_ID_EMAC,
149 .end = NR_IRQS_LEGACY + AT91RM9200_ID_EMAC,
150 .flags = IORESOURCE_IRQ,
151 },
152 };
153
154 static struct platform_device at91rm9200_eth_device = {
155 .name = "at91_ether",
156 .id = -1,
157 .dev = {
158 .dma_mask = &eth_dmamask,
159 .coherent_dma_mask = DMA_BIT_MASK(32),
160 .platform_data = &eth_data,
161 },
162 .resource = eth_resources,
163 .num_resources = ARRAY_SIZE(eth_resources),
164 };
165
166 void __init at91_add_device_eth(struct macb_platform_data *data)
167 {
168 if (!data)
169 return;
170
171 if (gpio_is_valid(data->phy_irq_pin)) {
172 at91_set_gpio_input(data->phy_irq_pin, 0);
173 at91_set_deglitch(data->phy_irq_pin, 1);
174 }
175
176 /* Pins used for MII and RMII */
177 at91_set_A_periph(AT91_PIN_PA16, 0); /* EMDIO */
178 at91_set_A_periph(AT91_PIN_PA15, 0); /* EMDC */
179 at91_set_A_periph(AT91_PIN_PA14, 0); /* ERXER */
180 at91_set_A_periph(AT91_PIN_PA13, 0); /* ERX1 */
181 at91_set_A_periph(AT91_PIN_PA12, 0); /* ERX0 */
182 at91_set_A_periph(AT91_PIN_PA11, 0); /* ECRS_ECRSDV */
183 at91_set_A_periph(AT91_PIN_PA10, 0); /* ETX1 */
184 at91_set_A_periph(AT91_PIN_PA9, 0); /* ETX0 */
185 at91_set_A_periph(AT91_PIN_PA8, 0); /* ETXEN */
186 at91_set_A_periph(AT91_PIN_PA7, 0); /* ETXCK_EREFCK */
187
188 if (!data->is_rmii) {
189 at91_set_B_periph(AT91_PIN_PB19, 0); /* ERXCK */
190 at91_set_B_periph(AT91_PIN_PB18, 0); /* ECOL */
191 at91_set_B_periph(AT91_PIN_PB17, 0); /* ERXDV */
192 at91_set_B_periph(AT91_PIN_PB16, 0); /* ERX3 */
193 at91_set_B_periph(AT91_PIN_PB15, 0); /* ERX2 */
194 at91_set_B_periph(AT91_PIN_PB14, 0); /* ETXER */
195 at91_set_B_periph(AT91_PIN_PB13, 0); /* ETX3 */
196 at91_set_B_periph(AT91_PIN_PB12, 0); /* ETX2 */
197 }
198
199 eth_data = *data;
200 platform_device_register(&at91rm9200_eth_device);
201 }
202 #else
203 void __init at91_add_device_eth(struct macb_platform_data *data) {}
204 #endif
205
206
207 /* --------------------------------------------------------------------
208 * Compact Flash / PCMCIA
209 * -------------------------------------------------------------------- */
210
211 #if defined(CONFIG_AT91_CF) || defined(CONFIG_AT91_CF_MODULE)
212 static struct at91_cf_data cf_data;
213
214 #define CF_BASE AT91_CHIPSELECT_4
215
216 static struct resource cf_resources[] = {
217 [0] = {
218 .start = CF_BASE,
219 /* ties up CS4, CS5 and CS6 */
220 .end = CF_BASE + (0x30000000 - 1),
221 .flags = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
222 },
223 };
224
225 static struct platform_device at91rm9200_cf_device = {
226 .name = "at91_cf",
227 .id = -1,
228 .dev = {
229 .platform_data = &cf_data,
230 },
231 .resource = cf_resources,
232 .num_resources = ARRAY_SIZE(cf_resources),
233 };
234
235 void __init at91_add_device_cf(struct at91_cf_data *data)
236 {
237 unsigned int csa;
238
239 if (!data)
240 return;
241
242 data->chipselect = 4; /* can only use EBI ChipSelect 4 */
243
244 /* CF takes over CS4, CS5, CS6 */
245 csa = at91_ramc_read(0, AT91_EBI_CSA);
246 at91_ramc_write(0, AT91_EBI_CSA, csa | AT91_EBI_CS4A_SMC_COMPACTFLASH);
247
248 /*
249 * Static memory controller timing adjustments.
250 * REVISIT: these timings are in terms of MCK cycles, so
251 * when MCK changes (cpufreq etc) so must these values...
252 */
253 at91_ramc_write(0, AT91_SMC_CSR(4),
254 AT91_SMC_ACSS_STD
255 | AT91_SMC_DBW_16
256 | AT91_SMC_BAT
257 | AT91_SMC_WSEN
258 | AT91_SMC_NWS_(32) /* wait states */
259 | AT91_SMC_RWSETUP_(6) /* setup time */
260 | AT91_SMC_RWHOLD_(4) /* hold time */
261 );
262
263 /* input/irq */
264 if (gpio_is_valid(data->irq_pin)) {
265 at91_set_gpio_input(data->irq_pin, 1);
266 at91_set_deglitch(data->irq_pin, 1);
267 }
268 at91_set_gpio_input(data->det_pin, 1);
269 at91_set_deglitch(data->det_pin, 1);
270
271 /* outputs, initially off */
272 if (gpio_is_valid(data->vcc_pin))
273 at91_set_gpio_output(data->vcc_pin, 0);
274 at91_set_gpio_output(data->rst_pin, 0);
275
276 /* force poweron defaults for these pins ... */
277 at91_set_A_periph(AT91_PIN_PC9, 0); /* A25/CFRNW */
278 at91_set_A_periph(AT91_PIN_PC10, 0); /* NCS4/CFCS */
279 at91_set_A_periph(AT91_PIN_PC11, 0); /* NCS5/CFCE1 */
280 at91_set_A_periph(AT91_PIN_PC12, 0); /* NCS6/CFCE2 */
281
282 /* nWAIT is _not_ a default setting */
283 at91_set_A_periph(AT91_PIN_PC6, 1); /* nWAIT */
284
285 cf_data = *data;
286 platform_device_register(&at91rm9200_cf_device);
287 }
288 #else
289 void __init at91_add_device_cf(struct at91_cf_data *data) {}
290 #endif
291
292
293 /* --------------------------------------------------------------------
294 * MMC / SD
295 * -------------------------------------------------------------------- */
296
297 #if IS_ENABLED(CONFIG_MMC_ATMELMCI)
298 static u64 mmc_dmamask = DMA_BIT_MASK(32);
299 static struct mci_platform_data mmc_data;
300
301 static struct resource mmc_resources[] = {
302 [0] = {
303 .start = AT91RM9200_BASE_MCI,
304 .end = AT91RM9200_BASE_MCI + SZ_16K - 1,
305 .flags = IORESOURCE_MEM,
306 },
307 [1] = {
308 .start = NR_IRQS_LEGACY + AT91RM9200_ID_MCI,
309 .end = NR_IRQS_LEGACY + AT91RM9200_ID_MCI,
310 .flags = IORESOURCE_IRQ,
311 },
312 };
313
314 static struct platform_device at91rm9200_mmc_device = {
315 .name = "atmel_mci",
316 .id = -1,
317 .dev = {
318 .dma_mask = &mmc_dmamask,
319 .coherent_dma_mask = DMA_BIT_MASK(32),
320 .platform_data = &mmc_data,
321 },
322 .resource = mmc_resources,
323 .num_resources = ARRAY_SIZE(mmc_resources),
324 };
325
326 void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data)
327 {
328 unsigned int i;
329 unsigned int slot_count = 0;
330
331 if (!data)
332 return;
333
334 for (i = 0; i < ATMCI_MAX_NR_SLOTS; i++) {
335
336 if (!data->slot[i].bus_width)
337 continue;
338
339 /* input/irq */
340 if (gpio_is_valid(data->slot[i].detect_pin)) {
341 at91_set_gpio_input(data->slot[i].detect_pin, 1);
342 at91_set_deglitch(data->slot[i].detect_pin, 1);
343 }
344 if (gpio_is_valid(data->slot[i].wp_pin))
345 at91_set_gpio_input(data->slot[i].wp_pin, 1);
346
347 switch (i) {
348 case 0: /* slot A */
349 /* CMD */
350 at91_set_A_periph(AT91_PIN_PA28, 1);
351 /* DAT0, maybe DAT1..DAT3 */
352 at91_set_A_periph(AT91_PIN_PA29, 1);
353 if (data->slot[i].bus_width == 4) {
354 at91_set_B_periph(AT91_PIN_PB3, 1);
355 at91_set_B_periph(AT91_PIN_PB4, 1);
356 at91_set_B_periph(AT91_PIN_PB5, 1);
357 }
358 slot_count++;
359 break;
360 case 1: /* slot B */
361 /* CMD */
362 at91_set_B_periph(AT91_PIN_PA8, 1);
363 /* DAT0, maybe DAT1..DAT3 */
364 at91_set_B_periph(AT91_PIN_PA9, 1);
365 if (data->slot[i].bus_width == 4) {
366 at91_set_B_periph(AT91_PIN_PA10, 1);
367 at91_set_B_periph(AT91_PIN_PA11, 1);
368 at91_set_B_periph(AT91_PIN_PA12, 1);
369 }
370 slot_count++;
371 break;
372 default:
373 printk(KERN_ERR
374 "AT91: SD/MMC slot %d not available\n", i);
375 break;
376 }
377 if (slot_count) {
378 /* CLK */
379 at91_set_A_periph(AT91_PIN_PA27, 0);
380
381 mmc_data = *data;
382 platform_device_register(&at91rm9200_mmc_device);
383 }
384 }
385
386 }
387 #else
388 void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data) {}
389 #endif
390
391
392 /* --------------------------------------------------------------------
393 * NAND / SmartMedia
394 * -------------------------------------------------------------------- */
395
396 #if defined(CONFIG_MTD_NAND_ATMEL) || defined(CONFIG_MTD_NAND_ATMEL_MODULE)
397 static struct atmel_nand_data nand_data;
398
399 #define NAND_BASE AT91_CHIPSELECT_3
400
401 static struct resource nand_resources[] = {
402 {
403 .start = NAND_BASE,
404 .end = NAND_BASE + SZ_256M - 1,
405 .flags = IORESOURCE_MEM,
406 }
407 };
408
409 static struct platform_device at91rm9200_nand_device = {
410 .name = "atmel_nand",
411 .id = -1,
412 .dev = {
413 .platform_data = &nand_data,
414 },
415 .resource = nand_resources,
416 .num_resources = ARRAY_SIZE(nand_resources),
417 };
418
419 void __init at91_add_device_nand(struct atmel_nand_data *data)
420 {
421 unsigned int csa;
422
423 if (!data)
424 return;
425
426 /* enable the address range of CS3 */
427 csa = at91_ramc_read(0, AT91_EBI_CSA);
428 at91_ramc_write(0, AT91_EBI_CSA, csa | AT91_EBI_CS3A_SMC_SMARTMEDIA);
429
430 /* set the bus interface characteristics */
431 at91_ramc_write(0, AT91_SMC_CSR(3), AT91_SMC_ACSS_STD | AT91_SMC_DBW_8 | AT91_SMC_WSEN
432 | AT91_SMC_NWS_(5)
433 | AT91_SMC_TDF_(1)
434 | AT91_SMC_RWSETUP_(0) /* tDS Data Set up Time 30 - ns */
435 | AT91_SMC_RWHOLD_(1) /* tDH Data Hold Time 20 - ns */
436 );
437
438 /* enable pin */
439 if (gpio_is_valid(data->enable_pin))
440 at91_set_gpio_output(data->enable_pin, 1);
441
442 /* ready/busy pin */
443 if (gpio_is_valid(data->rdy_pin))
444 at91_set_gpio_input(data->rdy_pin, 1);
445
446 /* card detect pin */
447 if (gpio_is_valid(data->det_pin))
448 at91_set_gpio_input(data->det_pin, 1);
449
450 at91_set_A_periph(AT91_PIN_PC1, 0); /* SMOE */
451 at91_set_A_periph(AT91_PIN_PC3, 0); /* SMWE */
452
453 nand_data = *data;
454 platform_device_register(&at91rm9200_nand_device);
455 }
456 #else
457 void __init at91_add_device_nand(struct atmel_nand_data *data) {}
458 #endif
459
460
461 /* --------------------------------------------------------------------
462 * TWI (i2c)
463 * -------------------------------------------------------------------- */
464
465 /*
466 * Prefer the GPIO code since the TWI controller isn't robust
467 * (gets overruns and underruns under load) and can only issue
468 * repeated STARTs in one scenario (the driver doesn't yet handle them).
469 */
470 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
471
472 static struct i2c_gpio_platform_data pdata = {
473 .sda_pin = AT91_PIN_PA25,
474 .sda_is_open_drain = 1,
475 .scl_pin = AT91_PIN_PA26,
476 .scl_is_open_drain = 1,
477 .udelay = 2, /* ~100 kHz */
478 };
479
480 static struct platform_device at91rm9200_twi_device = {
481 .name = "i2c-gpio",
482 .id = 0,
483 .dev.platform_data = &pdata,
484 };
485
486 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
487 {
488 at91_set_GPIO_periph(AT91_PIN_PA25, 1); /* TWD (SDA) */
489 at91_set_multi_drive(AT91_PIN_PA25, 1);
490
491 at91_set_GPIO_periph(AT91_PIN_PA26, 1); /* TWCK (SCL) */
492 at91_set_multi_drive(AT91_PIN_PA26, 1);
493
494 i2c_register_board_info(0, devices, nr_devices);
495 platform_device_register(&at91rm9200_twi_device);
496 }
497
498 #elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
499
500 static struct resource twi_resources[] = {
501 [0] = {
502 .start = AT91RM9200_BASE_TWI,
503 .end = AT91RM9200_BASE_TWI + SZ_16K - 1,
504 .flags = IORESOURCE_MEM,
505 },
506 [1] = {
507 .start = NR_IRQS_LEGACY + AT91RM9200_ID_TWI,
508 .end = NR_IRQS_LEGACY + AT91RM9200_ID_TWI,
509 .flags = IORESOURCE_IRQ,
510 },
511 };
512
513 static struct platform_device at91rm9200_twi_device = {
514 .name = "i2c-at91rm9200",
515 .id = 0,
516 .resource = twi_resources,
517 .num_resources = ARRAY_SIZE(twi_resources),
518 };
519
520 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
521 {
522 /* pins used for TWI interface */
523 at91_set_A_periph(AT91_PIN_PA25, 0); /* TWD */
524 at91_set_multi_drive(AT91_PIN_PA25, 1);
525
526 at91_set_A_periph(AT91_PIN_PA26, 0); /* TWCK */
527 at91_set_multi_drive(AT91_PIN_PA26, 1);
528
529 i2c_register_board_info(0, devices, nr_devices);
530 platform_device_register(&at91rm9200_twi_device);
531 }
532 #else
533 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
534 #endif
535
536
537 /* --------------------------------------------------------------------
538 * SPI
539 * -------------------------------------------------------------------- */
540
541 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
542 static u64 spi_dmamask = DMA_BIT_MASK(32);
543
544 static struct resource spi_resources[] = {
545 [0] = {
546 .start = AT91RM9200_BASE_SPI,
547 .end = AT91RM9200_BASE_SPI + SZ_16K - 1,
548 .flags = IORESOURCE_MEM,
549 },
550 [1] = {
551 .start = NR_IRQS_LEGACY + AT91RM9200_ID_SPI,
552 .end = NR_IRQS_LEGACY + AT91RM9200_ID_SPI,
553 .flags = IORESOURCE_IRQ,
554 },
555 };
556
557 static struct platform_device at91rm9200_spi_device = {
558 .name = "atmel_spi",
559 .id = 0,
560 .dev = {
561 .dma_mask = &spi_dmamask,
562 .coherent_dma_mask = DMA_BIT_MASK(32),
563 },
564 .resource = spi_resources,
565 .num_resources = ARRAY_SIZE(spi_resources),
566 };
567
568 static const unsigned spi_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
569
570 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
571 {
572 int i;
573 unsigned long cs_pin;
574
575 at91_set_A_periph(AT91_PIN_PA0, 0); /* MISO */
576 at91_set_A_periph(AT91_PIN_PA1, 0); /* MOSI */
577 at91_set_A_periph(AT91_PIN_PA2, 0); /* SPCK */
578
579 /* Enable SPI chip-selects */
580 for (i = 0; i < nr_devices; i++) {
581 if (devices[i].controller_data)
582 cs_pin = (unsigned long) devices[i].controller_data;
583 else
584 cs_pin = spi_standard_cs[devices[i].chip_select];
585
586 if (devices[i].chip_select == 0) /* for CS0 errata */
587 at91_set_A_periph(cs_pin, 0);
588 else
589 at91_set_gpio_output(cs_pin, 1);
590
591
592 /* pass chip-select pin to driver */
593 devices[i].controller_data = (void *) cs_pin;
594 }
595
596 spi_register_board_info(devices, nr_devices);
597 platform_device_register(&at91rm9200_spi_device);
598 }
599 #else
600 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
601 #endif
602
603
604 /* --------------------------------------------------------------------
605 * Timer/Counter blocks
606 * -------------------------------------------------------------------- */
607
608 #ifdef CONFIG_ATMEL_TCLIB
609
610 static struct resource tcb0_resources[] = {
611 [0] = {
612 .start = AT91RM9200_BASE_TCB0,
613 .end = AT91RM9200_BASE_TCB0 + SZ_16K - 1,
614 .flags = IORESOURCE_MEM,
615 },
616 [1] = {
617 .start = NR_IRQS_LEGACY + AT91RM9200_ID_TC0,
618 .end = NR_IRQS_LEGACY + AT91RM9200_ID_TC0,
619 .flags = IORESOURCE_IRQ,
620 },
621 [2] = {
622 .start = NR_IRQS_LEGACY + AT91RM9200_ID_TC1,
623 .end = NR_IRQS_LEGACY + AT91RM9200_ID_TC1,
624 .flags = IORESOURCE_IRQ,
625 },
626 [3] = {
627 .start = NR_IRQS_LEGACY + AT91RM9200_ID_TC2,
628 .end = NR_IRQS_LEGACY + AT91RM9200_ID_TC2,
629 .flags = IORESOURCE_IRQ,
630 },
631 };
632
633 static struct platform_device at91rm9200_tcb0_device = {
634 .name = "atmel_tcb",
635 .id = 0,
636 .resource = tcb0_resources,
637 .num_resources = ARRAY_SIZE(tcb0_resources),
638 };
639
640 static struct resource tcb1_resources[] = {
641 [0] = {
642 .start = AT91RM9200_BASE_TCB1,
643 .end = AT91RM9200_BASE_TCB1 + SZ_16K - 1,
644 .flags = IORESOURCE_MEM,
645 },
646 [1] = {
647 .start = NR_IRQS_LEGACY + AT91RM9200_ID_TC3,
648 .end = NR_IRQS_LEGACY + AT91RM9200_ID_TC3,
649 .flags = IORESOURCE_IRQ,
650 },
651 [2] = {
652 .start = NR_IRQS_LEGACY + AT91RM9200_ID_TC4,
653 .end = NR_IRQS_LEGACY + AT91RM9200_ID_TC4,
654 .flags = IORESOURCE_IRQ,
655 },
656 [3] = {
657 .start = NR_IRQS_LEGACY + AT91RM9200_ID_TC5,
658 .end = NR_IRQS_LEGACY + AT91RM9200_ID_TC5,
659 .flags = IORESOURCE_IRQ,
660 },
661 };
662
663 static struct platform_device at91rm9200_tcb1_device = {
664 .name = "atmel_tcb",
665 .id = 1,
666 .resource = tcb1_resources,
667 .num_resources = ARRAY_SIZE(tcb1_resources),
668 };
669
670 static void __init at91_add_device_tc(void)
671 {
672 platform_device_register(&at91rm9200_tcb0_device);
673 platform_device_register(&at91rm9200_tcb1_device);
674 }
675 #else
676 static void __init at91_add_device_tc(void) { }
677 #endif
678
679
680 /* --------------------------------------------------------------------
681 * RTC
682 * -------------------------------------------------------------------- */
683
684 #if defined(CONFIG_RTC_DRV_AT91RM9200) || defined(CONFIG_RTC_DRV_AT91RM9200_MODULE)
685 static struct resource rtc_resources[] = {
686 [0] = {
687 .start = AT91RM9200_BASE_RTC,
688 .end = AT91RM9200_BASE_RTC + SZ_256 - 1,
689 .flags = IORESOURCE_MEM,
690 },
691 [1] = {
692 .start = NR_IRQS_LEGACY + AT91_ID_SYS,
693 .end = NR_IRQS_LEGACY + AT91_ID_SYS,
694 .flags = IORESOURCE_IRQ,
695 },
696 };
697
698 static struct platform_device at91rm9200_rtc_device = {
699 .name = "at91_rtc",
700 .id = -1,
701 .resource = rtc_resources,
702 .num_resources = ARRAY_SIZE(rtc_resources),
703 };
704
705 static void __init at91_add_device_rtc(void)
706 {
707 platform_device_register(&at91rm9200_rtc_device);
708 }
709 #else
710 static void __init at91_add_device_rtc(void) {}
711 #endif
712
713
714 /* --------------------------------------------------------------------
715 * Watchdog
716 * -------------------------------------------------------------------- */
717
718 #if defined(CONFIG_AT91RM9200_WATCHDOG) || defined(CONFIG_AT91RM9200_WATCHDOG_MODULE)
719 static struct platform_device at91rm9200_wdt_device = {
720 .name = "at91_wdt",
721 .id = -1,
722 .num_resources = 0,
723 };
724
725 static void __init at91_add_device_watchdog(void)
726 {
727 platform_device_register(&at91rm9200_wdt_device);
728 }
729 #else
730 static void __init at91_add_device_watchdog(void) {}
731 #endif
732
733
734 /* --------------------------------------------------------------------
735 * SSC -- Synchronous Serial Controller
736 * -------------------------------------------------------------------- */
737
738 #if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE)
739 static u64 ssc0_dmamask = DMA_BIT_MASK(32);
740
741 static struct resource ssc0_resources[] = {
742 [0] = {
743 .start = AT91RM9200_BASE_SSC0,
744 .end = AT91RM9200_BASE_SSC0 + SZ_16K - 1,
745 .flags = IORESOURCE_MEM,
746 },
747 [1] = {
748 .start = NR_IRQS_LEGACY + AT91RM9200_ID_SSC0,
749 .end = NR_IRQS_LEGACY + AT91RM9200_ID_SSC0,
750 .flags = IORESOURCE_IRQ,
751 },
752 };
753
754 static struct platform_device at91rm9200_ssc0_device = {
755 .name = "at91rm9200_ssc",
756 .id = 0,
757 .dev = {
758 .dma_mask = &ssc0_dmamask,
759 .coherent_dma_mask = DMA_BIT_MASK(32),
760 },
761 .resource = ssc0_resources,
762 .num_resources = ARRAY_SIZE(ssc0_resources),
763 };
764
765 static inline void configure_ssc0_pins(unsigned pins)
766 {
767 if (pins & ATMEL_SSC_TF)
768 at91_set_A_periph(AT91_PIN_PB0, 1);
769 if (pins & ATMEL_SSC_TK)
770 at91_set_A_periph(AT91_PIN_PB1, 1);
771 if (pins & ATMEL_SSC_TD)
772 at91_set_A_periph(AT91_PIN_PB2, 1);
773 if (pins & ATMEL_SSC_RD)
774 at91_set_A_periph(AT91_PIN_PB3, 1);
775 if (pins & ATMEL_SSC_RK)
776 at91_set_A_periph(AT91_PIN_PB4, 1);
777 if (pins & ATMEL_SSC_RF)
778 at91_set_A_periph(AT91_PIN_PB5, 1);
779 }
780
781 static u64 ssc1_dmamask = DMA_BIT_MASK(32);
782
783 static struct resource ssc1_resources[] = {
784 [0] = {
785 .start = AT91RM9200_BASE_SSC1,
786 .end = AT91RM9200_BASE_SSC1 + SZ_16K - 1,
787 .flags = IORESOURCE_MEM,
788 },
789 [1] = {
790 .start = NR_IRQS_LEGACY + AT91RM9200_ID_SSC1,
791 .end = NR_IRQS_LEGACY + AT91RM9200_ID_SSC1,
792 .flags = IORESOURCE_IRQ,
793 },
794 };
795
796 static struct platform_device at91rm9200_ssc1_device = {
797 .name = "at91rm9200_ssc",
798 .id = 1,
799 .dev = {
800 .dma_mask = &ssc1_dmamask,
801 .coherent_dma_mask = DMA_BIT_MASK(32),
802 },
803 .resource = ssc1_resources,
804 .num_resources = ARRAY_SIZE(ssc1_resources),
805 };
806
807 static inline void configure_ssc1_pins(unsigned pins)
808 {
809 if (pins & ATMEL_SSC_TF)
810 at91_set_A_periph(AT91_PIN_PB6, 1);
811 if (pins & ATMEL_SSC_TK)
812 at91_set_A_periph(AT91_PIN_PB7, 1);
813 if (pins & ATMEL_SSC_TD)
814 at91_set_A_periph(AT91_PIN_PB8, 1);
815 if (pins & ATMEL_SSC_RD)
816 at91_set_A_periph(AT91_PIN_PB9, 1);
817 if (pins & ATMEL_SSC_RK)
818 at91_set_A_periph(AT91_PIN_PB10, 1);
819 if (pins & ATMEL_SSC_RF)
820 at91_set_A_periph(AT91_PIN_PB11, 1);
821 }
822
823 static u64 ssc2_dmamask = DMA_BIT_MASK(32);
824
825 static struct resource ssc2_resources[] = {
826 [0] = {
827 .start = AT91RM9200_BASE_SSC2,
828 .end = AT91RM9200_BASE_SSC2 + SZ_16K - 1,
829 .flags = IORESOURCE_MEM,
830 },
831 [1] = {
832 .start = NR_IRQS_LEGACY + AT91RM9200_ID_SSC2,
833 .end = NR_IRQS_LEGACY + AT91RM9200_ID_SSC2,
834 .flags = IORESOURCE_IRQ,
835 },
836 };
837
838 static struct platform_device at91rm9200_ssc2_device = {
839 .name = "at91rm9200_ssc",
840 .id = 2,
841 .dev = {
842 .dma_mask = &ssc2_dmamask,
843 .coherent_dma_mask = DMA_BIT_MASK(32),
844 },
845 .resource = ssc2_resources,
846 .num_resources = ARRAY_SIZE(ssc2_resources),
847 };
848
849 static inline void configure_ssc2_pins(unsigned pins)
850 {
851 if (pins & ATMEL_SSC_TF)
852 at91_set_A_periph(AT91_PIN_PB12, 1);
853 if (pins & ATMEL_SSC_TK)
854 at91_set_A_periph(AT91_PIN_PB13, 1);
855 if (pins & ATMEL_SSC_TD)
856 at91_set_A_periph(AT91_PIN_PB14, 1);
857 if (pins & ATMEL_SSC_RD)
858 at91_set_A_periph(AT91_PIN_PB15, 1);
859 if (pins & ATMEL_SSC_RK)
860 at91_set_A_periph(AT91_PIN_PB16, 1);
861 if (pins & ATMEL_SSC_RF)
862 at91_set_A_periph(AT91_PIN_PB17, 1);
863 }
864
865 /*
866 * SSC controllers are accessed through library code, instead of any
867 * kind of all-singing/all-dancing driver. For example one could be
868 * used by a particular I2S audio codec's driver, while another one
869 * on the same system might be used by a custom data capture driver.
870 */
871 void __init at91_add_device_ssc(unsigned id, unsigned pins)
872 {
873 struct platform_device *pdev;
874
875 /*
876 * NOTE: caller is responsible for passing information matching
877 * "pins" to whatever will be using each particular controller.
878 */
879 switch (id) {
880 case AT91RM9200_ID_SSC0:
881 pdev = &at91rm9200_ssc0_device;
882 configure_ssc0_pins(pins);
883 break;
884 case AT91RM9200_ID_SSC1:
885 pdev = &at91rm9200_ssc1_device;
886 configure_ssc1_pins(pins);
887 break;
888 case AT91RM9200_ID_SSC2:
889 pdev = &at91rm9200_ssc2_device;
890 configure_ssc2_pins(pins);
891 break;
892 default:
893 return;
894 }
895
896 platform_device_register(pdev);
897 }
898
899 #else
900 void __init at91_add_device_ssc(unsigned id, unsigned pins) {}
901 #endif
902
903
904 /* --------------------------------------------------------------------
905 * UART
906 * -------------------------------------------------------------------- */
907
908 #if defined(CONFIG_SERIAL_ATMEL)
909 static struct resource dbgu_resources[] = {
910 [0] = {
911 .start = AT91RM9200_BASE_DBGU,
912 .end = AT91RM9200_BASE_DBGU + SZ_512 - 1,
913 .flags = IORESOURCE_MEM,
914 },
915 [1] = {
916 .start = NR_IRQS_LEGACY + AT91_ID_SYS,
917 .end = NR_IRQS_LEGACY + AT91_ID_SYS,
918 .flags = IORESOURCE_IRQ,
919 },
920 };
921
922 static struct atmel_uart_data dbgu_data = {
923 .use_dma_tx = 0,
924 .use_dma_rx = 0, /* DBGU not capable of receive DMA */
925 };
926
927 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
928
929 static struct platform_device at91rm9200_dbgu_device = {
930 .name = "atmel_usart",
931 .id = 0,
932 .dev = {
933 .dma_mask = &dbgu_dmamask,
934 .coherent_dma_mask = DMA_BIT_MASK(32),
935 .platform_data = &dbgu_data,
936 },
937 .resource = dbgu_resources,
938 .num_resources = ARRAY_SIZE(dbgu_resources),
939 };
940
941 static inline void configure_dbgu_pins(void)
942 {
943 at91_set_A_periph(AT91_PIN_PA30, 0); /* DRXD */
944 at91_set_A_periph(AT91_PIN_PA31, 1); /* DTXD */
945 }
946
947 static struct resource uart0_resources[] = {
948 [0] = {
949 .start = AT91RM9200_BASE_US0,
950 .end = AT91RM9200_BASE_US0 + SZ_16K - 1,
951 .flags = IORESOURCE_MEM,
952 },
953 [1] = {
954 .start = NR_IRQS_LEGACY + AT91RM9200_ID_US0,
955 .end = NR_IRQS_LEGACY + AT91RM9200_ID_US0,
956 .flags = IORESOURCE_IRQ,
957 },
958 };
959
960 static struct atmel_uart_data uart0_data = {
961 .use_dma_tx = 1,
962 .use_dma_rx = 1,
963 };
964
965 static u64 uart0_dmamask = DMA_BIT_MASK(32);
966
967 static struct platform_device at91rm9200_uart0_device = {
968 .name = "atmel_usart",
969 .id = 1,
970 .dev = {
971 .dma_mask = &uart0_dmamask,
972 .coherent_dma_mask = DMA_BIT_MASK(32),
973 .platform_data = &uart0_data,
974 },
975 .resource = uart0_resources,
976 .num_resources = ARRAY_SIZE(uart0_resources),
977 };
978
979 static inline void configure_usart0_pins(unsigned pins)
980 {
981 at91_set_A_periph(AT91_PIN_PA17, 1); /* TXD0 */
982 at91_set_A_periph(AT91_PIN_PA18, 0); /* RXD0 */
983
984 if (pins & ATMEL_UART_CTS)
985 at91_set_A_periph(AT91_PIN_PA20, 0); /* CTS0 */
986
987 if (pins & ATMEL_UART_RTS) {
988 /*
989 * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
990 * We need to drive the pin manually. Default is off (RTS is active low).
991 */
992 at91_set_gpio_output(AT91_PIN_PA21, 1);
993 }
994 }
995
996 static struct resource uart1_resources[] = {
997 [0] = {
998 .start = AT91RM9200_BASE_US1,
999 .end = AT91RM9200_BASE_US1 + SZ_16K - 1,
1000 .flags = IORESOURCE_MEM,
1001 },
1002 [1] = {
1003 .start = NR_IRQS_LEGACY + AT91RM9200_ID_US1,
1004 .end = NR_IRQS_LEGACY + AT91RM9200_ID_US1,
1005 .flags = IORESOURCE_IRQ,
1006 },
1007 };
1008
1009 static struct atmel_uart_data uart1_data = {
1010 .use_dma_tx = 1,
1011 .use_dma_rx = 1,
1012 };
1013
1014 static u64 uart1_dmamask = DMA_BIT_MASK(32);
1015
1016 static struct platform_device at91rm9200_uart1_device = {
1017 .name = "atmel_usart",
1018 .id = 2,
1019 .dev = {
1020 .dma_mask = &uart1_dmamask,
1021 .coherent_dma_mask = DMA_BIT_MASK(32),
1022 .platform_data = &uart1_data,
1023 },
1024 .resource = uart1_resources,
1025 .num_resources = ARRAY_SIZE(uart1_resources),
1026 };
1027
1028 static inline void configure_usart1_pins(unsigned pins)
1029 {
1030 at91_set_A_periph(AT91_PIN_PB20, 1); /* TXD1 */
1031 at91_set_A_periph(AT91_PIN_PB21, 0); /* RXD1 */
1032
1033 if (pins & ATMEL_UART_RI)
1034 at91_set_A_periph(AT91_PIN_PB18, 0); /* RI1 */
1035 if (pins & ATMEL_UART_DTR)
1036 at91_set_A_periph(AT91_PIN_PB19, 0); /* DTR1 */
1037 if (pins & ATMEL_UART_DCD)
1038 at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD1 */
1039 if (pins & ATMEL_UART_CTS)
1040 at91_set_A_periph(AT91_PIN_PB24, 0); /* CTS1 */
1041 if (pins & ATMEL_UART_DSR)
1042 at91_set_A_periph(AT91_PIN_PB25, 0); /* DSR1 */
1043 if (pins & ATMEL_UART_RTS)
1044 at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS1 */
1045 }
1046
1047 static struct resource uart2_resources[] = {
1048 [0] = {
1049 .start = AT91RM9200_BASE_US2,
1050 .end = AT91RM9200_BASE_US2 + SZ_16K - 1,
1051 .flags = IORESOURCE_MEM,
1052 },
1053 [1] = {
1054 .start = NR_IRQS_LEGACY + AT91RM9200_ID_US2,
1055 .end = NR_IRQS_LEGACY + AT91RM9200_ID_US2,
1056 .flags = IORESOURCE_IRQ,
1057 },
1058 };
1059
1060 static struct atmel_uart_data uart2_data = {
1061 .use_dma_tx = 1,
1062 .use_dma_rx = 1,
1063 };
1064
1065 static u64 uart2_dmamask = DMA_BIT_MASK(32);
1066
1067 static struct platform_device at91rm9200_uart2_device = {
1068 .name = "atmel_usart",
1069 .id = 3,
1070 .dev = {
1071 .dma_mask = &uart2_dmamask,
1072 .coherent_dma_mask = DMA_BIT_MASK(32),
1073 .platform_data = &uart2_data,
1074 },
1075 .resource = uart2_resources,
1076 .num_resources = ARRAY_SIZE(uart2_resources),
1077 };
1078
1079 static inline void configure_usart2_pins(unsigned pins)
1080 {
1081 at91_set_A_periph(AT91_PIN_PA22, 0); /* RXD2 */
1082 at91_set_A_periph(AT91_PIN_PA23, 1); /* TXD2 */
1083
1084 if (pins & ATMEL_UART_CTS)
1085 at91_set_B_periph(AT91_PIN_PA30, 0); /* CTS2 */
1086 if (pins & ATMEL_UART_RTS)
1087 at91_set_B_periph(AT91_PIN_PA31, 0); /* RTS2 */
1088 }
1089
1090 static struct resource uart3_resources[] = {
1091 [0] = {
1092 .start = AT91RM9200_BASE_US3,
1093 .end = AT91RM9200_BASE_US3 + SZ_16K - 1,
1094 .flags = IORESOURCE_MEM,
1095 },
1096 [1] = {
1097 .start = NR_IRQS_LEGACY + AT91RM9200_ID_US3,
1098 .end = NR_IRQS_LEGACY + AT91RM9200_ID_US3,
1099 .flags = IORESOURCE_IRQ,
1100 },
1101 };
1102
1103 static struct atmel_uart_data uart3_data = {
1104 .use_dma_tx = 1,
1105 .use_dma_rx = 1,
1106 };
1107
1108 static u64 uart3_dmamask = DMA_BIT_MASK(32);
1109
1110 static struct platform_device at91rm9200_uart3_device = {
1111 .name = "atmel_usart",
1112 .id = 4,
1113 .dev = {
1114 .dma_mask = &uart3_dmamask,
1115 .coherent_dma_mask = DMA_BIT_MASK(32),
1116 .platform_data = &uart3_data,
1117 },
1118 .resource = uart3_resources,
1119 .num_resources = ARRAY_SIZE(uart3_resources),
1120 };
1121
1122 static inline void configure_usart3_pins(unsigned pins)
1123 {
1124 at91_set_B_periph(AT91_PIN_PA5, 1); /* TXD3 */
1125 at91_set_B_periph(AT91_PIN_PA6, 0); /* RXD3 */
1126
1127 if (pins & ATMEL_UART_CTS)
1128 at91_set_B_periph(AT91_PIN_PB1, 0); /* CTS3 */
1129 if (pins & ATMEL_UART_RTS)
1130 at91_set_B_periph(AT91_PIN_PB0, 0); /* RTS3 */
1131 }
1132
1133 static struct platform_device *__initdata at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
1134
1135 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
1136 {
1137 struct platform_device *pdev;
1138 struct atmel_uart_data *pdata;
1139
1140 switch (id) {
1141 case 0: /* DBGU */
1142 pdev = &at91rm9200_dbgu_device;
1143 configure_dbgu_pins();
1144 break;
1145 case AT91RM9200_ID_US0:
1146 pdev = &at91rm9200_uart0_device;
1147 configure_usart0_pins(pins);
1148 break;
1149 case AT91RM9200_ID_US1:
1150 pdev = &at91rm9200_uart1_device;
1151 configure_usart1_pins(pins);
1152 break;
1153 case AT91RM9200_ID_US2:
1154 pdev = &at91rm9200_uart2_device;
1155 configure_usart2_pins(pins);
1156 break;
1157 case AT91RM9200_ID_US3:
1158 pdev = &at91rm9200_uart3_device;
1159 configure_usart3_pins(pins);
1160 break;
1161 default:
1162 return;
1163 }
1164 pdata = pdev->dev.platform_data;
1165 pdata->num = portnr; /* update to mapped ID */
1166
1167 if (portnr < ATMEL_MAX_UART)
1168 at91_uarts[portnr] = pdev;
1169 }
1170
1171 void __init at91_add_device_serial(void)
1172 {
1173 int i;
1174
1175 for (i = 0; i < ATMEL_MAX_UART; i++) {
1176 if (at91_uarts[i])
1177 platform_device_register(at91_uarts[i]);
1178 }
1179 }
1180 #else
1181 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
1182 void __init at91_add_device_serial(void) {}
1183 #endif
1184
1185
1186 /* -------------------------------------------------------------------- */
1187
1188 /*
1189 * These devices are always present and don't need any board-specific
1190 * setup.
1191 */
1192 static int __init at91_add_standard_devices(void)
1193 {
1194 at91_add_device_rtc();
1195 at91_add_device_watchdog();
1196 at91_add_device_tc();
1197 return 0;
1198 }
1199
1200 arch_initcall(at91_add_standard_devices);
Linux with added FPC-III support