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[ARM] 4760/1: [AT91] SPI CS0 errata on AT91RM9200
[linux-2.6/libata-dev.git] / arch / arm / mach-at91 / at91rm9200_devices.c
blobef6aeb86e9805ba402c58cc70afdece13b009419
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 <asm/arch/board.h>
21 #include <asm/arch/gpio.h>
22 #include <asm/arch/at91rm9200.h>
23 #include <asm/arch/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 = &eth_dmamask,
150 .coherent_dma_mask = DMA_BIT_MASK(32),
151 .platform_data = &eth_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_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
372 static struct at91_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 = "at91_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 at91_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 at91_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 * RTC
581 * -------------------------------------------------------------------- */
582
583 #if defined(CONFIG_RTC_DRV_AT91RM9200) || defined(CONFIG_RTC_DRV_AT91RM9200_MODULE)
584 static struct platform_device at91rm9200_rtc_device = {
585 .name = "at91_rtc",
586 .id = -1,
587 .num_resources = 0,
588 };
589
590 static void __init at91_add_device_rtc(void)
591 {
592 platform_device_register(&at91rm9200_rtc_device);
593 }
594 #else
595 static void __init at91_add_device_rtc(void) {}
596 #endif
597
598
599 /* --------------------------------------------------------------------
600 * Watchdog
601 * -------------------------------------------------------------------- */
602
603 #if defined(CONFIG_AT91RM9200_WATCHDOG) || defined(CONFIG_AT91RM9200_WATCHDOG_MODULE)
604 static struct platform_device at91rm9200_wdt_device = {
605 .name = "at91_wdt",
606 .id = -1,
607 .num_resources = 0,
608 };
609
610 static void __init at91_add_device_watchdog(void)
611 {
612 platform_device_register(&at91rm9200_wdt_device);
613 }
614 #else
615 static void __init at91_add_device_watchdog(void) {}
616 #endif
617
618
619 /* --------------------------------------------------------------------
620 * SSC -- Synchronous Serial Controller
621 * -------------------------------------------------------------------- */
622
623 #if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE)
624 static u64 ssc0_dmamask = DMA_BIT_MASK(32);
625
626 static struct resource ssc0_resources[] = {
627 [0] = {
628 .start = AT91RM9200_BASE_SSC0,
629 .end = AT91RM9200_BASE_SSC0 + SZ_16K - 1,
630 .flags = IORESOURCE_MEM,
631 },
632 [1] = {
633 .start = AT91RM9200_ID_SSC0,
634 .end = AT91RM9200_ID_SSC0,
635 .flags = IORESOURCE_IRQ,
636 },
637 };
638
639 static struct platform_device at91rm9200_ssc0_device = {
640 .name = "ssc",
641 .id = 0,
642 .dev = {
643 .dma_mask = &ssc0_dmamask,
644 .coherent_dma_mask = DMA_BIT_MASK(32),
645 },
646 .resource = ssc0_resources,
647 .num_resources = ARRAY_SIZE(ssc0_resources),
648 };
649
650 static inline void configure_ssc0_pins(unsigned pins)
651 {
652 if (pins & ATMEL_SSC_TF)
653 at91_set_A_periph(AT91_PIN_PB0, 1);
654 if (pins & ATMEL_SSC_TK)
655 at91_set_A_periph(AT91_PIN_PB1, 1);
656 if (pins & ATMEL_SSC_TD)
657 at91_set_A_periph(AT91_PIN_PB2, 1);
658 if (pins & ATMEL_SSC_RD)
659 at91_set_A_periph(AT91_PIN_PB3, 1);
660 if (pins & ATMEL_SSC_RK)
661 at91_set_A_periph(AT91_PIN_PB4, 1);
662 if (pins & ATMEL_SSC_RF)
663 at91_set_A_periph(AT91_PIN_PB5, 1);
664 }
665
666 static u64 ssc1_dmamask = DMA_BIT_MASK(32);
667
668 static struct resource ssc1_resources[] = {
669 [0] = {
670 .start = AT91RM9200_BASE_SSC1,
671 .end = AT91RM9200_BASE_SSC1 + SZ_16K - 1,
672 .flags = IORESOURCE_MEM,
673 },
674 [1] = {
675 .start = AT91RM9200_ID_SSC1,
676 .end = AT91RM9200_ID_SSC1,
677 .flags = IORESOURCE_IRQ,
678 },
679 };
680
681 static struct platform_device at91rm9200_ssc1_device = {
682 .name = "ssc",
683 .id = 1,
684 .dev = {
685 .dma_mask = &ssc1_dmamask,
686 .coherent_dma_mask = DMA_BIT_MASK(32),
687 },
688 .resource = ssc1_resources,
689 .num_resources = ARRAY_SIZE(ssc1_resources),
690 };
691
692 static inline void configure_ssc1_pins(unsigned pins)
693 {
694 if (pins & ATMEL_SSC_TF)
695 at91_set_A_periph(AT91_PIN_PB6, 1);
696 if (pins & ATMEL_SSC_TK)
697 at91_set_A_periph(AT91_PIN_PB7, 1);
698 if (pins & ATMEL_SSC_TD)
699 at91_set_A_periph(AT91_PIN_PB8, 1);
700 if (pins & ATMEL_SSC_RD)
701 at91_set_A_periph(AT91_PIN_PB9, 1);
702 if (pins & ATMEL_SSC_RK)
703 at91_set_A_periph(AT91_PIN_PB10, 1);
704 if (pins & ATMEL_SSC_RF)
705 at91_set_A_periph(AT91_PIN_PB11, 1);
706 }
707
708 static u64 ssc2_dmamask = DMA_BIT_MASK(32);
709
710 static struct resource ssc2_resources[] = {
711 [0] = {
712 .start = AT91RM9200_BASE_SSC2,
713 .end = AT91RM9200_BASE_SSC2 + SZ_16K - 1,
714 .flags = IORESOURCE_MEM,
715 },
716 [1] = {
717 .start = AT91RM9200_ID_SSC2,
718 .end = AT91RM9200_ID_SSC2,
719 .flags = IORESOURCE_IRQ,
720 },
721 };
722
723 static struct platform_device at91rm9200_ssc2_device = {
724 .name = "ssc",
725 .id = 2,
726 .dev = {
727 .dma_mask = &ssc2_dmamask,
728 .coherent_dma_mask = DMA_BIT_MASK(32),
729 },
730 .resource = ssc2_resources,
731 .num_resources = ARRAY_SIZE(ssc2_resources),
732 };
733
734 static inline void configure_ssc2_pins(unsigned pins)
735 {
736 if (pins & ATMEL_SSC_TF)
737 at91_set_A_periph(AT91_PIN_PB12, 1);
738 if (pins & ATMEL_SSC_TK)
739 at91_set_A_periph(AT91_PIN_PB13, 1);
740 if (pins & ATMEL_SSC_TD)
741 at91_set_A_periph(AT91_PIN_PB14, 1);
742 if (pins & ATMEL_SSC_RD)
743 at91_set_A_periph(AT91_PIN_PB15, 1);
744 if (pins & ATMEL_SSC_RK)
745 at91_set_A_periph(AT91_PIN_PB16, 1);
746 if (pins & ATMEL_SSC_RF)
747 at91_set_A_periph(AT91_PIN_PB17, 1);
748 }
749
750 /*
751 * SSC controllers are accessed through library code, instead of any
752 * kind of all-singing/all-dancing driver. For example one could be
753 * used by a particular I2S audio codec's driver, while another one
754 * on the same system might be used by a custom data capture driver.
755 */
756 void __init at91_add_device_ssc(unsigned id, unsigned pins)
757 {
758 struct platform_device *pdev;
759
760 /*
761 * NOTE: caller is responsible for passing information matching
762 * "pins" to whatever will be using each particular controller.
763 */
764 switch (id) {
765 case AT91RM9200_ID_SSC0:
766 pdev = &at91rm9200_ssc0_device;
767 configure_ssc0_pins(pins);
768 at91_clock_associate("ssc0_clk", &pdev->dev, "ssc");
769 break;
770 case AT91RM9200_ID_SSC1:
771 pdev = &at91rm9200_ssc1_device;
772 configure_ssc1_pins(pins);
773 at91_clock_associate("ssc1_clk", &pdev->dev, "ssc");
774 break;
775 case AT91RM9200_ID_SSC2:
776 pdev = &at91rm9200_ssc2_device;
777 configure_ssc2_pins(pins);
778 at91_clock_associate("ssc2_clk", &pdev->dev, "ssc");
779 break;
780 default:
781 return;
782 }
783
784 platform_device_register(pdev);
785 }
786
787 #else
788 void __init at91_add_device_ssc(unsigned id, unsigned pins) {}
789 #endif
790
791
792 /* --------------------------------------------------------------------
793 * UART
794 * -------------------------------------------------------------------- */
795
796 #if defined(CONFIG_SERIAL_ATMEL)
797 static struct resource dbgu_resources[] = {
798 [0] = {
799 .start = AT91_VA_BASE_SYS + AT91_DBGU,
800 .end = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
801 .flags = IORESOURCE_MEM,
802 },
803 [1] = {
804 .start = AT91_ID_SYS,
805 .end = AT91_ID_SYS,
806 .flags = IORESOURCE_IRQ,
807 },
808 };
809
810 static struct atmel_uart_data dbgu_data = {
811 .use_dma_tx = 0,
812 .use_dma_rx = 0, /* DBGU not capable of receive DMA */
813 .regs = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
814 };
815
816 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
817
818 static struct platform_device at91rm9200_dbgu_device = {
819 .name = "atmel_usart",
820 .id = 0,
821 .dev = {
822 .dma_mask = &dbgu_dmamask,
823 .coherent_dma_mask = DMA_BIT_MASK(32),
824 .platform_data = &dbgu_data,
825 },
826 .resource = dbgu_resources,
827 .num_resources = ARRAY_SIZE(dbgu_resources),
828 };
829
830 static inline void configure_dbgu_pins(void)
831 {
832 at91_set_A_periph(AT91_PIN_PA30, 0); /* DRXD */
833 at91_set_A_periph(AT91_PIN_PA31, 1); /* DTXD */
834 }
835
836 static struct resource uart0_resources[] = {
837 [0] = {
838 .start = AT91RM9200_BASE_US0,
839 .end = AT91RM9200_BASE_US0 + SZ_16K - 1,
840 .flags = IORESOURCE_MEM,
841 },
842 [1] = {
843 .start = AT91RM9200_ID_US0,
844 .end = AT91RM9200_ID_US0,
845 .flags = IORESOURCE_IRQ,
846 },
847 };
848
849 static struct atmel_uart_data uart0_data = {
850 .use_dma_tx = 1,
851 .use_dma_rx = 1,
852 };
853
854 static u64 uart0_dmamask = DMA_BIT_MASK(32);
855
856 static struct platform_device at91rm9200_uart0_device = {
857 .name = "atmel_usart",
858 .id = 1,
859 .dev = {
860 .dma_mask = &uart0_dmamask,
861 .coherent_dma_mask = DMA_BIT_MASK(32),
862 .platform_data = &uart0_data,
863 },
864 .resource = uart0_resources,
865 .num_resources = ARRAY_SIZE(uart0_resources),
866 };
867
868 static inline void configure_usart0_pins(unsigned pins)
869 {
870 at91_set_A_periph(AT91_PIN_PA17, 1); /* TXD0 */
871 at91_set_A_periph(AT91_PIN_PA18, 0); /* RXD0 */
872
873 if (pins & ATMEL_UART_CTS)
874 at91_set_A_periph(AT91_PIN_PA20, 0); /* CTS0 */
875
876 if (pins & ATMEL_UART_RTS) {
877 /*
878 * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
879 * We need to drive the pin manually. Default is off (RTS is active low).
880 */
881 at91_set_gpio_output(AT91_PIN_PA21, 1);
882 }
883 }
884
885 static struct resource uart1_resources[] = {
886 [0] = {
887 .start = AT91RM9200_BASE_US1,
888 .end = AT91RM9200_BASE_US1 + SZ_16K - 1,
889 .flags = IORESOURCE_MEM,
890 },
891 [1] = {
892 .start = AT91RM9200_ID_US1,
893 .end = AT91RM9200_ID_US1,
894 .flags = IORESOURCE_IRQ,
895 },
896 };
897
898 static struct atmel_uart_data uart1_data = {
899 .use_dma_tx = 1,
900 .use_dma_rx = 1,
901 };
902
903 static u64 uart1_dmamask = DMA_BIT_MASK(32);
904
905 static struct platform_device at91rm9200_uart1_device = {
906 .name = "atmel_usart",
907 .id = 2,
908 .dev = {
909 .dma_mask = &uart1_dmamask,
910 .coherent_dma_mask = DMA_BIT_MASK(32),
911 .platform_data = &uart1_data,
912 },
913 .resource = uart1_resources,
914 .num_resources = ARRAY_SIZE(uart1_resources),
915 };
916
917 static inline void configure_usart1_pins(unsigned pins)
918 {
919 at91_set_A_periph(AT91_PIN_PB20, 1); /* TXD1 */
920 at91_set_A_periph(AT91_PIN_PB21, 0); /* RXD1 */
921
922 if (pins & ATMEL_UART_RI)
923 at91_set_A_periph(AT91_PIN_PB18, 0); /* RI1 */
924 if (pins & ATMEL_UART_DTR)
925 at91_set_A_periph(AT91_PIN_PB19, 0); /* DTR1 */
926 if (pins & ATMEL_UART_DCD)
927 at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD1 */
928 if (pins & ATMEL_UART_CTS)
929 at91_set_A_periph(AT91_PIN_PB24, 0); /* CTS1 */
930 if (pins & ATMEL_UART_DSR)
931 at91_set_A_periph(AT91_PIN_PB25, 0); /* DSR1 */
932 if (pins & ATMEL_UART_RTS)
933 at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS1 */
934 }
935
936 static struct resource uart2_resources[] = {
937 [0] = {
938 .start = AT91RM9200_BASE_US2,
939 .end = AT91RM9200_BASE_US2 + SZ_16K - 1,
940 .flags = IORESOURCE_MEM,
941 },
942 [1] = {
943 .start = AT91RM9200_ID_US2,
944 .end = AT91RM9200_ID_US2,
945 .flags = IORESOURCE_IRQ,
946 },
947 };
948
949 static struct atmel_uart_data uart2_data = {
950 .use_dma_tx = 1,
951 .use_dma_rx = 1,
952 };
953
954 static u64 uart2_dmamask = DMA_BIT_MASK(32);
955
956 static struct platform_device at91rm9200_uart2_device = {
957 .name = "atmel_usart",
958 .id = 3,
959 .dev = {
960 .dma_mask = &uart2_dmamask,
961 .coherent_dma_mask = DMA_BIT_MASK(32),
962 .platform_data = &uart2_data,
963 },
964 .resource = uart2_resources,
965 .num_resources = ARRAY_SIZE(uart2_resources),
966 };
967
968 static inline void configure_usart2_pins(unsigned pins)
969 {
970 at91_set_A_periph(AT91_PIN_PA22, 0); /* RXD2 */
971 at91_set_A_periph(AT91_PIN_PA23, 1); /* TXD2 */
972
973 if (pins & ATMEL_UART_CTS)
974 at91_set_B_periph(AT91_PIN_PA30, 0); /* CTS2 */
975 if (pins & ATMEL_UART_RTS)
976 at91_set_B_periph(AT91_PIN_PA31, 0); /* RTS2 */
977 }
978
979 static struct resource uart3_resources[] = {
980 [0] = {
981 .start = AT91RM9200_BASE_US3,
982 .end = AT91RM9200_BASE_US3 + SZ_16K - 1,
983 .flags = IORESOURCE_MEM,
984 },
985 [1] = {
986 .start = AT91RM9200_ID_US3,
987 .end = AT91RM9200_ID_US3,
988 .flags = IORESOURCE_IRQ,
989 },
990 };
991
992 static struct atmel_uart_data uart3_data = {
993 .use_dma_tx = 1,
994 .use_dma_rx = 1,
995 };
996
997 static u64 uart3_dmamask = DMA_BIT_MASK(32);
998
999 static struct platform_device at91rm9200_uart3_device = {
1000 .name = "atmel_usart",
1001 .id = 4,
1002 .dev = {
1003 .dma_mask = &uart3_dmamask,
1004 .coherent_dma_mask = DMA_BIT_MASK(32),
1005 .platform_data = &uart3_data,
1006 },
1007 .resource = uart3_resources,
1008 .num_resources = ARRAY_SIZE(uart3_resources),
1009 };
1010
1011 static inline void configure_usart3_pins(unsigned pins)
1012 {
1013 at91_set_B_periph(AT91_PIN_PA5, 1); /* TXD3 */
1014 at91_set_B_periph(AT91_PIN_PA6, 0); /* RXD3 */
1015
1016 if (pins & ATMEL_UART_CTS)
1017 at91_set_B_periph(AT91_PIN_PB1, 0); /* CTS3 */
1018 if (pins & ATMEL_UART_RTS)
1019 at91_set_B_periph(AT91_PIN_PB0, 0); /* RTS3 */
1020 }
1021
1022 static struct platform_device *at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
1023 struct platform_device *atmel_default_console_device; /* the serial console device */
1024
1025 void __init __deprecated at91_init_serial(struct at91_uart_config *config)
1026 {
1027 int i;
1028
1029 /* Fill in list of supported UARTs */
1030 for (i = 0; i < config->nr_tty; i++) {
1031 switch (config->tty_map[i]) {
1032 case 0:
1033 configure_usart0_pins(ATMEL_UART_CTS | ATMEL_UART_RTS);
1034 at91_uarts[i] = &at91rm9200_uart0_device;
1035 at91_clock_associate("usart0_clk", &at91rm9200_uart0_device.dev, "usart");
1036 break;
1037 case 1:
1038 configure_usart1_pins(ATMEL_UART_CTS | ATMEL_UART_RTS | ATMEL_UART_DSR | ATMEL_UART_DTR | ATMEL_UART_DCD | ATMEL_UART_RI);
1039 at91_uarts[i] = &at91rm9200_uart1_device;
1040 at91_clock_associate("usart1_clk", &at91rm9200_uart1_device.dev, "usart");
1041 break;
1042 case 2:
1043 configure_usart2_pins(0);
1044 at91_uarts[i] = &at91rm9200_uart2_device;
1045 at91_clock_associate("usart2_clk", &at91rm9200_uart2_device.dev, "usart");
1046 break;
1047 case 3:
1048 configure_usart3_pins(0);
1049 at91_uarts[i] = &at91rm9200_uart3_device;
1050 at91_clock_associate("usart3_clk", &at91rm9200_uart3_device.dev, "usart");
1051 break;
1052 case 4:
1053 configure_dbgu_pins();
1054 at91_uarts[i] = &at91rm9200_dbgu_device;
1055 at91_clock_associate("mck", &at91rm9200_dbgu_device.dev, "usart");
1056 break;
1057 default:
1058 continue;
1059 }
1060 at91_uarts[i]->id = i; /* update ID number to mapped ID */
1061 }
1062
1063 /* Set serial console device */
1064 if (config->console_tty < ATMEL_MAX_UART)
1065 atmel_default_console_device = at91_uarts[config->console_tty];
1066 if (!atmel_default_console_device)
1067 printk(KERN_INFO "AT91: No default serial console defined.\n");
1068 }
1069
1070 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
1071 {
1072 struct platform_device *pdev;
1073
1074 switch (id) {
1075 case 0: /* DBGU */
1076 pdev = &at91rm9200_dbgu_device;
1077 configure_dbgu_pins();
1078 at91_clock_associate("mck", &pdev->dev, "usart");
1079 break;
1080 case AT91RM9200_ID_US0:
1081 pdev = &at91rm9200_uart0_device;
1082 configure_usart0_pins(pins);
1083 at91_clock_associate("usart0_clk", &pdev->dev, "usart");
1084 break;
1085 case AT91RM9200_ID_US1:
1086 pdev = &at91rm9200_uart1_device;
1087 configure_usart1_pins(pins);
1088 at91_clock_associate("usart1_clk", &pdev->dev, "usart");
1089 break;
1090 case AT91RM9200_ID_US2:
1091 pdev = &at91rm9200_uart2_device;
1092 configure_usart2_pins(pins);
1093 at91_clock_associate("usart2_clk", &pdev->dev, "usart");
1094 break;
1095 case AT91RM9200_ID_US3:
1096 pdev = &at91rm9200_uart3_device;
1097 configure_usart3_pins(pins);
1098 at91_clock_associate("usart3_clk", &pdev->dev, "usart");
1099 break;
1100 default:
1101 return;
1102 }
1103 pdev->id = portnr; /* update to mapped ID */
1104
1105 if (portnr < ATMEL_MAX_UART)
1106 at91_uarts[portnr] = pdev;
1107 }
1108
1109 void __init at91_set_serial_console(unsigned portnr)
1110 {
1111 if (portnr < ATMEL_MAX_UART)
1112 atmel_default_console_device = at91_uarts[portnr];
1113 if (!atmel_default_console_device)
1114 printk(KERN_INFO "AT91: No default serial console defined.\n");
1115 }
1116
1117 void __init at91_add_device_serial(void)
1118 {
1119 int i;
1120
1121 for (i = 0; i < ATMEL_MAX_UART; i++) {
1122 if (at91_uarts[i])
1123 platform_device_register(at91_uarts[i]);
1124 }
1125 }
1126 #else
1127 void __init __deprecated at91_init_serial(struct at91_uart_config *config) {}
1128 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
1129 void __init at91_set_serial_console(unsigned portnr) {}
1130 void __init at91_add_device_serial(void) {}
1131 #endif
1132
1133
1134 /* -------------------------------------------------------------------- */
1135
1136 /*
1137 * These devices are always present and don't need any board-specific
1138 * setup.
1139 */
1140 static int __init at91_add_standard_devices(void)
1141 {
1142 at91_add_device_rtc();
1143 at91_add_device_watchdog();
1144 return 0;
1145 }
1146
1147 arch_initcall(at91_add_standard_devices);
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