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Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
[deliverable/linux.git] / arch / arm / mach-at91 / at91sam9260_devices.c
1 /*
2 * arch/arm/mach-at91/at91sam9260_devices.c
3 *
4 * Copyright (C) 2006 Atmel
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 */
12 #include <asm/mach/arch.h>
13 #include <asm/mach/map.h>
14
15 #include <linux/dma-mapping.h>
16 #include <linux/gpio.h>
17 #include <linux/platform_device.h>
18 #include <linux/i2c-gpio.h>
19
20 #include <linux/platform_data/at91_adc.h>
21
22 #include <mach/cpu.h>
23 #include <mach/at91sam9260.h>
24 #include <mach/at91sam9260_matrix.h>
25 #include <mach/at91_matrix.h>
26 #include <mach/at91sam9_smc.h>
27 #include <mach/at91_adc.h>
28
29 #include "board.h"
30 #include "generic.h"
31
32
33 /* --------------------------------------------------------------------
34 * USB Host
35 * -------------------------------------------------------------------- */
36
37 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
38 static u64 ohci_dmamask = DMA_BIT_MASK(32);
39 static struct at91_usbh_data usbh_data;
40
41 static struct resource usbh_resources[] = {
42 [0] = {
43 .start = AT91SAM9260_UHP_BASE,
44 .end = AT91SAM9260_UHP_BASE + SZ_1M - 1,
45 .flags = IORESOURCE_MEM,
46 },
47 [1] = {
48 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_UHP,
49 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_UHP,
50 .flags = IORESOURCE_IRQ,
51 },
52 };
53
54 static struct platform_device at91_usbh_device = {
55 .name = "at91_ohci",
56 .id = -1,
57 .dev = {
58 .dma_mask = &ohci_dmamask,
59 .coherent_dma_mask = DMA_BIT_MASK(32),
60 .platform_data = &usbh_data,
61 },
62 .resource = usbh_resources,
63 .num_resources = ARRAY_SIZE(usbh_resources),
64 };
65
66 void __init at91_add_device_usbh(struct at91_usbh_data *data)
67 {
68 int i;
69
70 if (!data)
71 return;
72
73 /* Enable overcurrent notification */
74 for (i = 0; i < data->ports; i++) {
75 if (gpio_is_valid(data->overcurrent_pin[i]))
76 at91_set_gpio_input(data->overcurrent_pin[i], 1);
77 }
78
79 usbh_data = *data;
80 platform_device_register(&at91_usbh_device);
81 }
82 #else
83 void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
84 #endif
85
86
87 /* --------------------------------------------------------------------
88 * USB Device (Gadget)
89 * -------------------------------------------------------------------- */
90
91 #if defined(CONFIG_USB_AT91) || defined(CONFIG_USB_AT91_MODULE)
92 static struct at91_udc_data udc_data;
93
94 static struct resource udc_resources[] = {
95 [0] = {
96 .start = AT91SAM9260_BASE_UDP,
97 .end = AT91SAM9260_BASE_UDP + SZ_16K - 1,
98 .flags = IORESOURCE_MEM,
99 },
100 [1] = {
101 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_UDP,
102 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_UDP,
103 .flags = IORESOURCE_IRQ,
104 },
105 };
106
107 static struct platform_device at91_udc_device = {
108 .name = "at91_udc",
109 .id = -1,
110 .dev = {
111 .platform_data = &udc_data,
112 },
113 .resource = udc_resources,
114 .num_resources = ARRAY_SIZE(udc_resources),
115 };
116
117 void __init at91_add_device_udc(struct at91_udc_data *data)
118 {
119 if (!data)
120 return;
121
122 if (gpio_is_valid(data->vbus_pin)) {
123 at91_set_gpio_input(data->vbus_pin, 0);
124 at91_set_deglitch(data->vbus_pin, 1);
125 }
126
127 /* Pullup pin is handled internally by USB device peripheral */
128
129 udc_data = *data;
130 platform_device_register(&at91_udc_device);
131 }
132 #else
133 void __init at91_add_device_udc(struct at91_udc_data *data) {}
134 #endif
135
136
137 /* --------------------------------------------------------------------
138 * Ethernet
139 * -------------------------------------------------------------------- */
140
141 #if defined(CONFIG_MACB) || defined(CONFIG_MACB_MODULE)
142 static u64 eth_dmamask = DMA_BIT_MASK(32);
143 static struct macb_platform_data eth_data;
144
145 static struct resource eth_resources[] = {
146 [0] = {
147 .start = AT91SAM9260_BASE_EMAC,
148 .end = AT91SAM9260_BASE_EMAC + SZ_16K - 1,
149 .flags = IORESOURCE_MEM,
150 },
151 [1] = {
152 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_EMAC,
153 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_EMAC,
154 .flags = IORESOURCE_IRQ,
155 },
156 };
157
158 static struct platform_device at91sam9260_eth_device = {
159 .name = "macb",
160 .id = -1,
161 .dev = {
162 .dma_mask = &eth_dmamask,
163 .coherent_dma_mask = DMA_BIT_MASK(32),
164 .platform_data = &eth_data,
165 },
166 .resource = eth_resources,
167 .num_resources = ARRAY_SIZE(eth_resources),
168 };
169
170 void __init at91_add_device_eth(struct macb_platform_data *data)
171 {
172 if (!data)
173 return;
174
175 if (gpio_is_valid(data->phy_irq_pin)) {
176 at91_set_gpio_input(data->phy_irq_pin, 0);
177 at91_set_deglitch(data->phy_irq_pin, 1);
178 }
179
180 /* Pins used for MII and RMII */
181 at91_set_A_periph(AT91_PIN_PA19, 0); /* ETXCK_EREFCK */
182 at91_set_A_periph(AT91_PIN_PA17, 0); /* ERXDV */
183 at91_set_A_periph(AT91_PIN_PA14, 0); /* ERX0 */
184 at91_set_A_periph(AT91_PIN_PA15, 0); /* ERX1 */
185 at91_set_A_periph(AT91_PIN_PA18, 0); /* ERXER */
186 at91_set_A_periph(AT91_PIN_PA16, 0); /* ETXEN */
187 at91_set_A_periph(AT91_PIN_PA12, 0); /* ETX0 */
188 at91_set_A_periph(AT91_PIN_PA13, 0); /* ETX1 */
189 at91_set_A_periph(AT91_PIN_PA21, 0); /* EMDIO */
190 at91_set_A_periph(AT91_PIN_PA20, 0); /* EMDC */
191
192 if (!data->is_rmii) {
193 at91_set_B_periph(AT91_PIN_PA28, 0); /* ECRS */
194 at91_set_B_periph(AT91_PIN_PA29, 0); /* ECOL */
195 at91_set_B_periph(AT91_PIN_PA25, 0); /* ERX2 */
196 at91_set_B_periph(AT91_PIN_PA26, 0); /* ERX3 */
197 at91_set_B_periph(AT91_PIN_PA27, 0); /* ERXCK */
198 at91_set_B_periph(AT91_PIN_PA23, 0); /* ETX2 */
199 at91_set_B_periph(AT91_PIN_PA24, 0); /* ETX3 */
200 at91_set_B_periph(AT91_PIN_PA22, 0); /* ETXER */
201 }
202
203 eth_data = *data;
204 platform_device_register(&at91sam9260_eth_device);
205 }
206 #else
207 void __init at91_add_device_eth(struct macb_platform_data *data) {}
208 #endif
209
210
211 /* --------------------------------------------------------------------
212 * MMC / SD Slot for Atmel MCI Driver
213 * -------------------------------------------------------------------- */
214
215 #if IS_ENABLED(CONFIG_MMC_ATMELMCI)
216 static u64 mmc_dmamask = DMA_BIT_MASK(32);
217 static struct mci_platform_data mmc_data;
218
219 static struct resource mmc_resources[] = {
220 [0] = {
221 .start = AT91SAM9260_BASE_MCI,
222 .end = AT91SAM9260_BASE_MCI + SZ_16K - 1,
223 .flags = IORESOURCE_MEM,
224 },
225 [1] = {
226 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_MCI,
227 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_MCI,
228 .flags = IORESOURCE_IRQ,
229 },
230 };
231
232 static struct platform_device at91sam9260_mmc_device = {
233 .name = "atmel_mci",
234 .id = -1,
235 .dev = {
236 .dma_mask = &mmc_dmamask,
237 .coherent_dma_mask = DMA_BIT_MASK(32),
238 .platform_data = &mmc_data,
239 },
240 .resource = mmc_resources,
241 .num_resources = ARRAY_SIZE(mmc_resources),
242 };
243
244 void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data)
245 {
246 unsigned int i;
247 unsigned int slot_count = 0;
248
249 if (!data)
250 return;
251
252 for (i = 0; i < ATMCI_MAX_NR_SLOTS; i++) {
253 if (data->slot[i].bus_width) {
254 /* input/irq */
255 if (gpio_is_valid(data->slot[i].detect_pin)) {
256 at91_set_gpio_input(data->slot[i].detect_pin, 1);
257 at91_set_deglitch(data->slot[i].detect_pin, 1);
258 }
259 if (gpio_is_valid(data->slot[i].wp_pin))
260 at91_set_gpio_input(data->slot[i].wp_pin, 1);
261
262 switch (i) {
263 case 0:
264 /* CMD */
265 at91_set_A_periph(AT91_PIN_PA7, 1);
266 /* DAT0, maybe DAT1..DAT3 */
267 at91_set_A_periph(AT91_PIN_PA6, 1);
268 if (data->slot[i].bus_width == 4) {
269 at91_set_A_periph(AT91_PIN_PA9, 1);
270 at91_set_A_periph(AT91_PIN_PA10, 1);
271 at91_set_A_periph(AT91_PIN_PA11, 1);
272 }
273 slot_count++;
274 break;
275 case 1:
276 /* CMD */
277 at91_set_B_periph(AT91_PIN_PA1, 1);
278 /* DAT0, maybe DAT1..DAT3 */
279 at91_set_B_periph(AT91_PIN_PA0, 1);
280 if (data->slot[i].bus_width == 4) {
281 at91_set_B_periph(AT91_PIN_PA5, 1);
282 at91_set_B_periph(AT91_PIN_PA4, 1);
283 at91_set_B_periph(AT91_PIN_PA3, 1);
284 }
285 slot_count++;
286 break;
287 default:
288 printk(KERN_ERR
289 "AT91: SD/MMC slot %d not available\n", i);
290 break;
291 }
292 }
293 }
294
295 if (slot_count) {
296 /* CLK */
297 at91_set_A_periph(AT91_PIN_PA8, 0);
298
299 mmc_data = *data;
300 platform_device_register(&at91sam9260_mmc_device);
301 }
302 }
303 #else
304 void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data) {}
305 #endif
306
307
308 /* --------------------------------------------------------------------
309 * NAND / SmartMedia
310 * -------------------------------------------------------------------- */
311
312 #if defined(CONFIG_MTD_NAND_ATMEL) || defined(CONFIG_MTD_NAND_ATMEL_MODULE)
313 static struct atmel_nand_data nand_data;
314
315 #define NAND_BASE AT91_CHIPSELECT_3
316
317 static struct resource nand_resources[] = {
318 [0] = {
319 .start = NAND_BASE,
320 .end = NAND_BASE + SZ_256M - 1,
321 .flags = IORESOURCE_MEM,
322 },
323 [1] = {
324 .start = AT91SAM9260_BASE_ECC,
325 .end = AT91SAM9260_BASE_ECC + SZ_512 - 1,
326 .flags = IORESOURCE_MEM,
327 }
328 };
329
330 static struct platform_device at91sam9260_nand_device = {
331 .name = "atmel_nand",
332 .id = -1,
333 .dev = {
334 .platform_data = &nand_data,
335 },
336 .resource = nand_resources,
337 .num_resources = ARRAY_SIZE(nand_resources),
338 };
339
340 void __init at91_add_device_nand(struct atmel_nand_data *data)
341 {
342 unsigned long csa;
343
344 if (!data)
345 return;
346
347 csa = at91_matrix_read(AT91_MATRIX_EBICSA);
348 at91_matrix_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
349
350 /* enable pin */
351 if (gpio_is_valid(data->enable_pin))
352 at91_set_gpio_output(data->enable_pin, 1);
353
354 /* ready/busy pin */
355 if (gpio_is_valid(data->rdy_pin))
356 at91_set_gpio_input(data->rdy_pin, 1);
357
358 /* card detect pin */
359 if (gpio_is_valid(data->det_pin))
360 at91_set_gpio_input(data->det_pin, 1);
361
362 nand_data = *data;
363 platform_device_register(&at91sam9260_nand_device);
364 }
365 #else
366 void __init at91_add_device_nand(struct atmel_nand_data *data) {}
367 #endif
368
369
370 /* --------------------------------------------------------------------
371 * TWI (i2c)
372 * -------------------------------------------------------------------- */
373
374 /*
375 * Prefer the GPIO code since the TWI controller isn't robust
376 * (gets overruns and underruns under load) and can only issue
377 * repeated STARTs in one scenario (the driver doesn't yet handle them).
378 */
379
380 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
381
382 static struct i2c_gpio_platform_data pdata = {
383 .sda_pin = AT91_PIN_PA23,
384 .sda_is_open_drain = 1,
385 .scl_pin = AT91_PIN_PA24,
386 .scl_is_open_drain = 1,
387 .udelay = 2, /* ~100 kHz */
388 };
389
390 static struct platform_device at91sam9260_twi_device = {
391 .name = "i2c-gpio",
392 .id = 0,
393 .dev.platform_data = &pdata,
394 };
395
396 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
397 {
398 at91_set_GPIO_periph(AT91_PIN_PA23, 1); /* TWD (SDA) */
399 at91_set_multi_drive(AT91_PIN_PA23, 1);
400
401 at91_set_GPIO_periph(AT91_PIN_PA24, 1); /* TWCK (SCL) */
402 at91_set_multi_drive(AT91_PIN_PA24, 1);
403
404 i2c_register_board_info(0, devices, nr_devices);
405 platform_device_register(&at91sam9260_twi_device);
406 }
407
408 #elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
409
410 static struct resource twi_resources[] = {
411 [0] = {
412 .start = AT91SAM9260_BASE_TWI,
413 .end = AT91SAM9260_BASE_TWI + SZ_16K - 1,
414 .flags = IORESOURCE_MEM,
415 },
416 [1] = {
417 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_TWI,
418 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_TWI,
419 .flags = IORESOURCE_IRQ,
420 },
421 };
422
423 static struct platform_device at91sam9260_twi_device = {
424 .id = 0,
425 .resource = twi_resources,
426 .num_resources = ARRAY_SIZE(twi_resources),
427 };
428
429 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
430 {
431 /* IP version is not the same on 9260 and g20 */
432 if (cpu_is_at91sam9g20()) {
433 at91sam9260_twi_device.name = "i2c-at91sam9g20";
434 } else {
435 at91sam9260_twi_device.name = "i2c-at91sam9260";
436 }
437
438 /* pins used for TWI interface */
439 at91_set_A_periph(AT91_PIN_PA23, 0); /* TWD */
440 at91_set_multi_drive(AT91_PIN_PA23, 1);
441
442 at91_set_A_periph(AT91_PIN_PA24, 0); /* TWCK */
443 at91_set_multi_drive(AT91_PIN_PA24, 1);
444
445 i2c_register_board_info(0, devices, nr_devices);
446 platform_device_register(&at91sam9260_twi_device);
447 }
448 #else
449 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
450 #endif
451
452
453 /* --------------------------------------------------------------------
454 * SPI
455 * -------------------------------------------------------------------- */
456
457 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
458 static u64 spi_dmamask = DMA_BIT_MASK(32);
459
460 static struct resource spi0_resources[] = {
461 [0] = {
462 .start = AT91SAM9260_BASE_SPI0,
463 .end = AT91SAM9260_BASE_SPI0 + SZ_16K - 1,
464 .flags = IORESOURCE_MEM,
465 },
466 [1] = {
467 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_SPI0,
468 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_SPI0,
469 .flags = IORESOURCE_IRQ,
470 },
471 };
472
473 static struct platform_device at91sam9260_spi0_device = {
474 .name = "atmel_spi",
475 .id = 0,
476 .dev = {
477 .dma_mask = &spi_dmamask,
478 .coherent_dma_mask = DMA_BIT_MASK(32),
479 },
480 .resource = spi0_resources,
481 .num_resources = ARRAY_SIZE(spi0_resources),
482 };
483
484 static const unsigned spi0_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PC11, AT91_PIN_PC16, AT91_PIN_PC17 };
485
486 static struct resource spi1_resources[] = {
487 [0] = {
488 .start = AT91SAM9260_BASE_SPI1,
489 .end = AT91SAM9260_BASE_SPI1 + SZ_16K - 1,
490 .flags = IORESOURCE_MEM,
491 },
492 [1] = {
493 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_SPI1,
494 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_SPI1,
495 .flags = IORESOURCE_IRQ,
496 },
497 };
498
499 static struct platform_device at91sam9260_spi1_device = {
500 .name = "atmel_spi",
501 .id = 1,
502 .dev = {
503 .dma_mask = &spi_dmamask,
504 .coherent_dma_mask = DMA_BIT_MASK(32),
505 },
506 .resource = spi1_resources,
507 .num_resources = ARRAY_SIZE(spi1_resources),
508 };
509
510 static const unsigned spi1_standard_cs[4] = { AT91_PIN_PB3, AT91_PIN_PC5, AT91_PIN_PC4, AT91_PIN_PC3 };
511
512 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
513 {
514 int i;
515 unsigned long cs_pin;
516 short enable_spi0 = 0;
517 short enable_spi1 = 0;
518
519 /* Choose SPI chip-selects */
520 for (i = 0; i < nr_devices; i++) {
521 if (devices[i].controller_data)
522 cs_pin = (unsigned long) devices[i].controller_data;
523 else if (devices[i].bus_num == 0)
524 cs_pin = spi0_standard_cs[devices[i].chip_select];
525 else
526 cs_pin = spi1_standard_cs[devices[i].chip_select];
527
528 if (!gpio_is_valid(cs_pin))
529 continue;
530
531 if (devices[i].bus_num == 0)
532 enable_spi0 = 1;
533 else
534 enable_spi1 = 1;
535
536 /* enable chip-select pin */
537 at91_set_gpio_output(cs_pin, 1);
538
539 /* pass chip-select pin to driver */
540 devices[i].controller_data = (void *) cs_pin;
541 }
542
543 spi_register_board_info(devices, nr_devices);
544
545 /* Configure SPI bus(es) */
546 if (enable_spi0) {
547 at91_set_A_periph(AT91_PIN_PA0, 0); /* SPI0_MISO */
548 at91_set_A_periph(AT91_PIN_PA1, 0); /* SPI0_MOSI */
549 at91_set_A_periph(AT91_PIN_PA2, 0); /* SPI1_SPCK */
550
551 platform_device_register(&at91sam9260_spi0_device);
552 }
553 if (enable_spi1) {
554 at91_set_A_periph(AT91_PIN_PB0, 0); /* SPI1_MISO */
555 at91_set_A_periph(AT91_PIN_PB1, 0); /* SPI1_MOSI */
556 at91_set_A_periph(AT91_PIN_PB2, 0); /* SPI1_SPCK */
557
558 platform_device_register(&at91sam9260_spi1_device);
559 }
560 }
561 #else
562 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
563 #endif
564
565
566 /* --------------------------------------------------------------------
567 * Timer/Counter blocks
568 * -------------------------------------------------------------------- */
569
570 #ifdef CONFIG_ATMEL_TCLIB
571
572 static struct resource tcb0_resources[] = {
573 [0] = {
574 .start = AT91SAM9260_BASE_TCB0,
575 .end = AT91SAM9260_BASE_TCB0 + SZ_256 - 1,
576 .flags = IORESOURCE_MEM,
577 },
578 [1] = {
579 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_TC0,
580 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_TC0,
581 .flags = IORESOURCE_IRQ,
582 },
583 [2] = {
584 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_TC1,
585 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_TC1,
586 .flags = IORESOURCE_IRQ,
587 },
588 [3] = {
589 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_TC2,
590 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_TC2,
591 .flags = IORESOURCE_IRQ,
592 },
593 };
594
595 static struct platform_device at91sam9260_tcb0_device = {
596 .name = "atmel_tcb",
597 .id = 0,
598 .resource = tcb0_resources,
599 .num_resources = ARRAY_SIZE(tcb0_resources),
600 };
601
602 static struct resource tcb1_resources[] = {
603 [0] = {
604 .start = AT91SAM9260_BASE_TCB1,
605 .end = AT91SAM9260_BASE_TCB1 + SZ_256 - 1,
606 .flags = IORESOURCE_MEM,
607 },
608 [1] = {
609 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_TC3,
610 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_TC3,
611 .flags = IORESOURCE_IRQ,
612 },
613 [2] = {
614 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_TC4,
615 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_TC4,
616 .flags = IORESOURCE_IRQ,
617 },
618 [3] = {
619 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_TC5,
620 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_TC5,
621 .flags = IORESOURCE_IRQ,
622 },
623 };
624
625 static struct platform_device at91sam9260_tcb1_device = {
626 .name = "atmel_tcb",
627 .id = 1,
628 .resource = tcb1_resources,
629 .num_resources = ARRAY_SIZE(tcb1_resources),
630 };
631
632 static void __init at91_add_device_tc(void)
633 {
634 platform_device_register(&at91sam9260_tcb0_device);
635 platform_device_register(&at91sam9260_tcb1_device);
636 }
637 #else
638 static void __init at91_add_device_tc(void) { }
639 #endif
640
641
642 /* --------------------------------------------------------------------
643 * RTT
644 * -------------------------------------------------------------------- */
645
646 static struct resource rtt_resources[] = {
647 {
648 .start = AT91SAM9260_BASE_RTT,
649 .end = AT91SAM9260_BASE_RTT + SZ_16 - 1,
650 .flags = IORESOURCE_MEM,
651 }, {
652 .flags = IORESOURCE_MEM,
653 }, {
654 .flags = IORESOURCE_IRQ,
655 },
656 };
657
658 static struct platform_device at91sam9260_rtt_device = {
659 .name = "at91_rtt",
660 .id = 0,
661 .resource = rtt_resources,
662 };
663
664
665 #if IS_ENABLED(CONFIG_RTC_DRV_AT91SAM9)
666 static void __init at91_add_device_rtt_rtc(void)
667 {
668 at91sam9260_rtt_device.name = "rtc-at91sam9";
669 /*
670 * The second resource is needed:
671 * GPBR will serve as the storage for RTC time offset
672 */
673 at91sam9260_rtt_device.num_resources = 3;
674 rtt_resources[1].start = AT91SAM9260_BASE_GPBR +
675 4 * CONFIG_RTC_DRV_AT91SAM9_GPBR;
676 rtt_resources[1].end = rtt_resources[1].start + 3;
677 rtt_resources[2].start = NR_IRQS_LEGACY + AT91_ID_SYS;
678 rtt_resources[2].end = NR_IRQS_LEGACY + AT91_ID_SYS;
679 }
680 #else
681 static void __init at91_add_device_rtt_rtc(void)
682 {
683 /* Only one resource is needed: RTT not used as RTC */
684 at91sam9260_rtt_device.num_resources = 1;
685 }
686 #endif
687
688 static void __init at91_add_device_rtt(void)
689 {
690 at91_add_device_rtt_rtc();
691 platform_device_register(&at91sam9260_rtt_device);
692 }
693
694
695 /* --------------------------------------------------------------------
696 * Watchdog
697 * -------------------------------------------------------------------- */
698
699 #if defined(CONFIG_AT91SAM9X_WATCHDOG) || defined(CONFIG_AT91SAM9X_WATCHDOG_MODULE)
700 static struct resource wdt_resources[] = {
701 {
702 .start = AT91SAM9260_BASE_WDT,
703 .end = AT91SAM9260_BASE_WDT + SZ_16 - 1,
704 .flags = IORESOURCE_MEM,
705 }
706 };
707
708 static struct platform_device at91sam9260_wdt_device = {
709 .name = "at91_wdt",
710 .id = -1,
711 .resource = wdt_resources,
712 .num_resources = ARRAY_SIZE(wdt_resources),
713 };
714
715 static void __init at91_add_device_watchdog(void)
716 {
717 platform_device_register(&at91sam9260_wdt_device);
718 }
719 #else
720 static void __init at91_add_device_watchdog(void) {}
721 #endif
722
723
724 /* --------------------------------------------------------------------
725 * SSC -- Synchronous Serial Controller
726 * -------------------------------------------------------------------- */
727
728 #if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE)
729 static u64 ssc_dmamask = DMA_BIT_MASK(32);
730
731 static struct resource ssc_resources[] = {
732 [0] = {
733 .start = AT91SAM9260_BASE_SSC,
734 .end = AT91SAM9260_BASE_SSC + SZ_16K - 1,
735 .flags = IORESOURCE_MEM,
736 },
737 [1] = {
738 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_SSC,
739 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_SSC,
740 .flags = IORESOURCE_IRQ,
741 },
742 };
743
744 static struct platform_device at91sam9260_ssc_device = {
745 .name = "at91rm9200_ssc",
746 .id = 0,
747 .dev = {
748 .dma_mask = &ssc_dmamask,
749 .coherent_dma_mask = DMA_BIT_MASK(32),
750 },
751 .resource = ssc_resources,
752 .num_resources = ARRAY_SIZE(ssc_resources),
753 };
754
755 static inline void configure_ssc_pins(unsigned pins)
756 {
757 if (pins & ATMEL_SSC_TF)
758 at91_set_A_periph(AT91_PIN_PB17, 1);
759 if (pins & ATMEL_SSC_TK)
760 at91_set_A_periph(AT91_PIN_PB16, 1);
761 if (pins & ATMEL_SSC_TD)
762 at91_set_A_periph(AT91_PIN_PB18, 1);
763 if (pins & ATMEL_SSC_RD)
764 at91_set_A_periph(AT91_PIN_PB19, 1);
765 if (pins & ATMEL_SSC_RK)
766 at91_set_A_periph(AT91_PIN_PB20, 1);
767 if (pins & ATMEL_SSC_RF)
768 at91_set_A_periph(AT91_PIN_PB21, 1);
769 }
770
771 /*
772 * SSC controllers are accessed through library code, instead of any
773 * kind of all-singing/all-dancing driver. For example one could be
774 * used by a particular I2S audio codec's driver, while another one
775 * on the same system might be used by a custom data capture driver.
776 */
777 void __init at91_add_device_ssc(unsigned id, unsigned pins)
778 {
779 struct platform_device *pdev;
780
781 /*
782 * NOTE: caller is responsible for passing information matching
783 * "pins" to whatever will be using each particular controller.
784 */
785 switch (id) {
786 case AT91SAM9260_ID_SSC:
787 pdev = &at91sam9260_ssc_device;
788 configure_ssc_pins(pins);
789 break;
790 default:
791 return;
792 }
793
794 platform_device_register(pdev);
795 }
796
797 #else
798 void __init at91_add_device_ssc(unsigned id, unsigned pins) {}
799 #endif
800
801
802 /* --------------------------------------------------------------------
803 * UART
804 * -------------------------------------------------------------------- */
805 #if defined(CONFIG_SERIAL_ATMEL)
806 static struct resource dbgu_resources[] = {
807 [0] = {
808 .start = AT91SAM9260_BASE_DBGU,
809 .end = AT91SAM9260_BASE_DBGU + SZ_512 - 1,
810 .flags = IORESOURCE_MEM,
811 },
812 [1] = {
813 .start = NR_IRQS_LEGACY + AT91_ID_SYS,
814 .end = NR_IRQS_LEGACY + AT91_ID_SYS,
815 .flags = IORESOURCE_IRQ,
816 },
817 };
818
819 static struct atmel_uart_data dbgu_data = {
820 .use_dma_tx = 0,
821 .use_dma_rx = 0, /* DBGU not capable of receive DMA */
822 };
823
824 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
825
826 static struct platform_device at91sam9260_dbgu_device = {
827 .name = "atmel_usart",
828 .id = 0,
829 .dev = {
830 .dma_mask = &dbgu_dmamask,
831 .coherent_dma_mask = DMA_BIT_MASK(32),
832 .platform_data = &dbgu_data,
833 },
834 .resource = dbgu_resources,
835 .num_resources = ARRAY_SIZE(dbgu_resources),
836 };
837
838 static inline void configure_dbgu_pins(void)
839 {
840 at91_set_A_periph(AT91_PIN_PB14, 0); /* DRXD */
841 at91_set_A_periph(AT91_PIN_PB15, 1); /* DTXD */
842 }
843
844 static struct resource uart0_resources[] = {
845 [0] = {
846 .start = AT91SAM9260_BASE_US0,
847 .end = AT91SAM9260_BASE_US0 + SZ_16K - 1,
848 .flags = IORESOURCE_MEM,
849 },
850 [1] = {
851 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_US0,
852 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_US0,
853 .flags = IORESOURCE_IRQ,
854 },
855 };
856
857 static struct atmel_uart_data uart0_data = {
858 .use_dma_tx = 1,
859 .use_dma_rx = 1,
860 };
861
862 static u64 uart0_dmamask = DMA_BIT_MASK(32);
863
864 static struct platform_device at91sam9260_uart0_device = {
865 .name = "atmel_usart",
866 .id = 1,
867 .dev = {
868 .dma_mask = &uart0_dmamask,
869 .coherent_dma_mask = DMA_BIT_MASK(32),
870 .platform_data = &uart0_data,
871 },
872 .resource = uart0_resources,
873 .num_resources = ARRAY_SIZE(uart0_resources),
874 };
875
876 static inline void configure_usart0_pins(unsigned pins)
877 {
878 at91_set_A_periph(AT91_PIN_PB4, 1); /* TXD0 */
879 at91_set_A_periph(AT91_PIN_PB5, 0); /* RXD0 */
880
881 if (pins & ATMEL_UART_RTS)
882 at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS0 */
883 if (pins & ATMEL_UART_CTS)
884 at91_set_A_periph(AT91_PIN_PB27, 0); /* CTS0 */
885 if (pins & ATMEL_UART_DTR)
886 at91_set_A_periph(AT91_PIN_PB24, 0); /* DTR0 */
887 if (pins & ATMEL_UART_DSR)
888 at91_set_A_periph(AT91_PIN_PB22, 0); /* DSR0 */
889 if (pins & ATMEL_UART_DCD)
890 at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD0 */
891 if (pins & ATMEL_UART_RI)
892 at91_set_A_periph(AT91_PIN_PB25, 0); /* RI0 */
893 }
894
895 static struct resource uart1_resources[] = {
896 [0] = {
897 .start = AT91SAM9260_BASE_US1,
898 .end = AT91SAM9260_BASE_US1 + SZ_16K - 1,
899 .flags = IORESOURCE_MEM,
900 },
901 [1] = {
902 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_US1,
903 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_US1,
904 .flags = IORESOURCE_IRQ,
905 },
906 };
907
908 static struct atmel_uart_data uart1_data = {
909 .use_dma_tx = 1,
910 .use_dma_rx = 1,
911 };
912
913 static u64 uart1_dmamask = DMA_BIT_MASK(32);
914
915 static struct platform_device at91sam9260_uart1_device = {
916 .name = "atmel_usart",
917 .id = 2,
918 .dev = {
919 .dma_mask = &uart1_dmamask,
920 .coherent_dma_mask = DMA_BIT_MASK(32),
921 .platform_data = &uart1_data,
922 },
923 .resource = uart1_resources,
924 .num_resources = ARRAY_SIZE(uart1_resources),
925 };
926
927 static inline void configure_usart1_pins(unsigned pins)
928 {
929 at91_set_A_periph(AT91_PIN_PB6, 1); /* TXD1 */
930 at91_set_A_periph(AT91_PIN_PB7, 0); /* RXD1 */
931
932 if (pins & ATMEL_UART_RTS)
933 at91_set_A_periph(AT91_PIN_PB28, 0); /* RTS1 */
934 if (pins & ATMEL_UART_CTS)
935 at91_set_A_periph(AT91_PIN_PB29, 0); /* CTS1 */
936 }
937
938 static struct resource uart2_resources[] = {
939 [0] = {
940 .start = AT91SAM9260_BASE_US2,
941 .end = AT91SAM9260_BASE_US2 + SZ_16K - 1,
942 .flags = IORESOURCE_MEM,
943 },
944 [1] = {
945 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_US2,
946 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_US2,
947 .flags = IORESOURCE_IRQ,
948 },
949 };
950
951 static struct atmel_uart_data uart2_data = {
952 .use_dma_tx = 1,
953 .use_dma_rx = 1,
954 };
955
956 static u64 uart2_dmamask = DMA_BIT_MASK(32);
957
958 static struct platform_device at91sam9260_uart2_device = {
959 .name = "atmel_usart",
960 .id = 3,
961 .dev = {
962 .dma_mask = &uart2_dmamask,
963 .coherent_dma_mask = DMA_BIT_MASK(32),
964 .platform_data = &uart2_data,
965 },
966 .resource = uart2_resources,
967 .num_resources = ARRAY_SIZE(uart2_resources),
968 };
969
970 static inline void configure_usart2_pins(unsigned pins)
971 {
972 at91_set_A_periph(AT91_PIN_PB8, 1); /* TXD2 */
973 at91_set_A_periph(AT91_PIN_PB9, 0); /* RXD2 */
974
975 if (pins & ATMEL_UART_RTS)
976 at91_set_A_periph(AT91_PIN_PA4, 0); /* RTS2 */
977 if (pins & ATMEL_UART_CTS)
978 at91_set_A_periph(AT91_PIN_PA5, 0); /* CTS2 */
979 }
980
981 static struct resource uart3_resources[] = {
982 [0] = {
983 .start = AT91SAM9260_BASE_US3,
984 .end = AT91SAM9260_BASE_US3 + SZ_16K - 1,
985 .flags = IORESOURCE_MEM,
986 },
987 [1] = {
988 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_US3,
989 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_US3,
990 .flags = IORESOURCE_IRQ,
991 },
992 };
993
994 static struct atmel_uart_data uart3_data = {
995 .use_dma_tx = 1,
996 .use_dma_rx = 1,
997 };
998
999 static u64 uart3_dmamask = DMA_BIT_MASK(32);
1000
1001 static struct platform_device at91sam9260_uart3_device = {
1002 .name = "atmel_usart",
1003 .id = 4,
1004 .dev = {
1005 .dma_mask = &uart3_dmamask,
1006 .coherent_dma_mask = DMA_BIT_MASK(32),
1007 .platform_data = &uart3_data,
1008 },
1009 .resource = uart3_resources,
1010 .num_resources = ARRAY_SIZE(uart3_resources),
1011 };
1012
1013 static inline void configure_usart3_pins(unsigned pins)
1014 {
1015 at91_set_A_periph(AT91_PIN_PB10, 1); /* TXD3 */
1016 at91_set_A_periph(AT91_PIN_PB11, 0); /* RXD3 */
1017
1018 if (pins & ATMEL_UART_RTS)
1019 at91_set_B_periph(AT91_PIN_PC8, 0); /* RTS3 */
1020 if (pins & ATMEL_UART_CTS)
1021 at91_set_B_periph(AT91_PIN_PC10, 0); /* CTS3 */
1022 }
1023
1024 static struct resource uart4_resources[] = {
1025 [0] = {
1026 .start = AT91SAM9260_BASE_US4,
1027 .end = AT91SAM9260_BASE_US4 + SZ_16K - 1,
1028 .flags = IORESOURCE_MEM,
1029 },
1030 [1] = {
1031 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_US4,
1032 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_US4,
1033 .flags = IORESOURCE_IRQ,
1034 },
1035 };
1036
1037 static struct atmel_uart_data uart4_data = {
1038 .use_dma_tx = 1,
1039 .use_dma_rx = 1,
1040 };
1041
1042 static u64 uart4_dmamask = DMA_BIT_MASK(32);
1043
1044 static struct platform_device at91sam9260_uart4_device = {
1045 .name = "atmel_usart",
1046 .id = 5,
1047 .dev = {
1048 .dma_mask = &uart4_dmamask,
1049 .coherent_dma_mask = DMA_BIT_MASK(32),
1050 .platform_data = &uart4_data,
1051 },
1052 .resource = uart4_resources,
1053 .num_resources = ARRAY_SIZE(uart4_resources),
1054 };
1055
1056 static inline void configure_usart4_pins(void)
1057 {
1058 at91_set_B_periph(AT91_PIN_PA31, 1); /* TXD4 */
1059 at91_set_B_periph(AT91_PIN_PA30, 0); /* RXD4 */
1060 }
1061
1062 static struct resource uart5_resources[] = {
1063 [0] = {
1064 .start = AT91SAM9260_BASE_US5,
1065 .end = AT91SAM9260_BASE_US5 + SZ_16K - 1,
1066 .flags = IORESOURCE_MEM,
1067 },
1068 [1] = {
1069 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_US5,
1070 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_US5,
1071 .flags = IORESOURCE_IRQ,
1072 },
1073 };
1074
1075 static struct atmel_uart_data uart5_data = {
1076 .use_dma_tx = 1,
1077 .use_dma_rx = 1,
1078 };
1079
1080 static u64 uart5_dmamask = DMA_BIT_MASK(32);
1081
1082 static struct platform_device at91sam9260_uart5_device = {
1083 .name = "atmel_usart",
1084 .id = 6,
1085 .dev = {
1086 .dma_mask = &uart5_dmamask,
1087 .coherent_dma_mask = DMA_BIT_MASK(32),
1088 .platform_data = &uart5_data,
1089 },
1090 .resource = uart5_resources,
1091 .num_resources = ARRAY_SIZE(uart5_resources),
1092 };
1093
1094 static inline void configure_usart5_pins(void)
1095 {
1096 at91_set_A_periph(AT91_PIN_PB12, 1); /* TXD5 */
1097 at91_set_A_periph(AT91_PIN_PB13, 0); /* RXD5 */
1098 }
1099
1100 static struct platform_device *__initdata at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
1101
1102 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
1103 {
1104 struct platform_device *pdev;
1105 struct atmel_uart_data *pdata;
1106
1107 switch (id) {
1108 case 0: /* DBGU */
1109 pdev = &at91sam9260_dbgu_device;
1110 configure_dbgu_pins();
1111 break;
1112 case AT91SAM9260_ID_US0:
1113 pdev = &at91sam9260_uart0_device;
1114 configure_usart0_pins(pins);
1115 break;
1116 case AT91SAM9260_ID_US1:
1117 pdev = &at91sam9260_uart1_device;
1118 configure_usart1_pins(pins);
1119 break;
1120 case AT91SAM9260_ID_US2:
1121 pdev = &at91sam9260_uart2_device;
1122 configure_usart2_pins(pins);
1123 break;
1124 case AT91SAM9260_ID_US3:
1125 pdev = &at91sam9260_uart3_device;
1126 configure_usart3_pins(pins);
1127 break;
1128 case AT91SAM9260_ID_US4:
1129 pdev = &at91sam9260_uart4_device;
1130 configure_usart4_pins();
1131 break;
1132 case AT91SAM9260_ID_US5:
1133 pdev = &at91sam9260_uart5_device;
1134 configure_usart5_pins();
1135 break;
1136 default:
1137 return;
1138 }
1139 pdata = pdev->dev.platform_data;
1140 pdata->num = portnr; /* update to mapped ID */
1141
1142 if (portnr < ATMEL_MAX_UART)
1143 at91_uarts[portnr] = pdev;
1144 }
1145
1146 void __init at91_add_device_serial(void)
1147 {
1148 int i;
1149
1150 for (i = 0; i < ATMEL_MAX_UART; i++) {
1151 if (at91_uarts[i])
1152 platform_device_register(at91_uarts[i]);
1153 }
1154 }
1155 #else
1156 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
1157 void __init at91_add_device_serial(void) {}
1158 #endif
1159
1160 /* --------------------------------------------------------------------
1161 * CF/IDE
1162 * -------------------------------------------------------------------- */
1163
1164 #if defined(CONFIG_PATA_AT91) || defined(CONFIG_PATA_AT91_MODULE) || \
1165 defined(CONFIG_AT91_CF) || defined(CONFIG_AT91_CF_MODULE)
1166
1167 static struct at91_cf_data cf0_data;
1168
1169 static struct resource cf0_resources[] = {
1170 [0] = {
1171 .start = AT91_CHIPSELECT_4,
1172 .end = AT91_CHIPSELECT_4 + SZ_256M - 1,
1173 .flags = IORESOURCE_MEM,
1174 }
1175 };
1176
1177 static struct platform_device cf0_device = {
1178 .id = 0,
1179 .dev = {
1180 .platform_data = &cf0_data,
1181 },
1182 .resource = cf0_resources,
1183 .num_resources = ARRAY_SIZE(cf0_resources),
1184 };
1185
1186 static struct at91_cf_data cf1_data;
1187
1188 static struct resource cf1_resources[] = {
1189 [0] = {
1190 .start = AT91_CHIPSELECT_5,
1191 .end = AT91_CHIPSELECT_5 + SZ_256M - 1,
1192 .flags = IORESOURCE_MEM,
1193 }
1194 };
1195
1196 static struct platform_device cf1_device = {
1197 .id = 1,
1198 .dev = {
1199 .platform_data = &cf1_data,
1200 },
1201 .resource = cf1_resources,
1202 .num_resources = ARRAY_SIZE(cf1_resources),
1203 };
1204
1205 void __init at91_add_device_cf(struct at91_cf_data *data)
1206 {
1207 struct platform_device *pdev;
1208 unsigned long csa;
1209
1210 if (!data)
1211 return;
1212
1213 csa = at91_matrix_read(AT91_MATRIX_EBICSA);
1214
1215 switch (data->chipselect) {
1216 case 4:
1217 at91_set_multi_drive(AT91_PIN_PC8, 0);
1218 at91_set_A_periph(AT91_PIN_PC8, 0);
1219 csa |= AT91_MATRIX_CS4A_SMC_CF1;
1220 cf0_data = *data;
1221 pdev = &cf0_device;
1222 break;
1223 case 5:
1224 at91_set_multi_drive(AT91_PIN_PC9, 0);
1225 at91_set_A_periph(AT91_PIN_PC9, 0);
1226 csa |= AT91_MATRIX_CS5A_SMC_CF2;
1227 cf1_data = *data;
1228 pdev = &cf1_device;
1229 break;
1230 default:
1231 printk(KERN_ERR "AT91 CF: bad chip-select requested (%u)\n",
1232 data->chipselect);
1233 return;
1234 }
1235
1236 at91_matrix_write(AT91_MATRIX_EBICSA, csa);
1237
1238 if (gpio_is_valid(data->rst_pin)) {
1239 at91_set_multi_drive(data->rst_pin, 0);
1240 at91_set_gpio_output(data->rst_pin, 1);
1241 }
1242
1243 if (gpio_is_valid(data->irq_pin)) {
1244 at91_set_gpio_input(data->irq_pin, 0);
1245 at91_set_deglitch(data->irq_pin, 1);
1246 }
1247
1248 if (gpio_is_valid(data->det_pin)) {
1249 at91_set_gpio_input(data->det_pin, 0);
1250 at91_set_deglitch(data->det_pin, 1);
1251 }
1252
1253 at91_set_B_periph(AT91_PIN_PC6, 0); /* CFCE1 */
1254 at91_set_B_periph(AT91_PIN_PC7, 0); /* CFCE2 */
1255 at91_set_A_periph(AT91_PIN_PC10, 0); /* CFRNW */
1256 at91_set_A_periph(AT91_PIN_PC15, 1); /* NWAIT */
1257
1258 if (data->flags & AT91_CF_TRUE_IDE)
1259 #if defined(CONFIG_PATA_AT91) || defined(CONFIG_PATA_AT91_MODULE)
1260 pdev->name = "pata_at91";
1261 #else
1262 #warning "board requires AT91_CF_TRUE_IDE: enable pata_at91"
1263 #endif
1264 else
1265 pdev->name = "at91_cf";
1266
1267 platform_device_register(pdev);
1268 }
1269
1270 #else
1271 void __init at91_add_device_cf(struct at91_cf_data * data) {}
1272 #endif
1273
1274 /* --------------------------------------------------------------------
1275 * ADCs
1276 * -------------------------------------------------------------------- */
1277
1278 #if IS_ENABLED(CONFIG_AT91_ADC)
1279 static struct at91_adc_data adc_data;
1280
1281 static struct resource adc_resources[] = {
1282 [0] = {
1283 .start = AT91SAM9260_BASE_ADC,
1284 .end = AT91SAM9260_BASE_ADC + SZ_16K - 1,
1285 .flags = IORESOURCE_MEM,
1286 },
1287 [1] = {
1288 .start = NR_IRQS_LEGACY + AT91SAM9260_ID_ADC,
1289 .end = NR_IRQS_LEGACY + AT91SAM9260_ID_ADC,
1290 .flags = IORESOURCE_IRQ,
1291 },
1292 };
1293
1294 static struct platform_device at91_adc_device = {
1295 .name = "at91_adc",
1296 .id = -1,
1297 .dev = {
1298 .platform_data = &adc_data,
1299 },
1300 .resource = adc_resources,
1301 .num_resources = ARRAY_SIZE(adc_resources),
1302 };
1303
1304 static struct at91_adc_trigger at91_adc_triggers[] = {
1305 [0] = {
1306 .name = "timer-counter-0",
1307 .value = AT91_ADC_TRGSEL_TC0 | AT91_ADC_TRGEN,
1308 },
1309 [1] = {
1310 .name = "timer-counter-1",
1311 .value = AT91_ADC_TRGSEL_TC1 | AT91_ADC_TRGEN,
1312 },
1313 [2] = {
1314 .name = "timer-counter-2",
1315 .value = AT91_ADC_TRGSEL_TC2 | AT91_ADC_TRGEN,
1316 },
1317 [3] = {
1318 .name = "external",
1319 .value = AT91_ADC_TRGSEL_EXTERNAL | AT91_ADC_TRGEN,
1320 .is_external = true,
1321 },
1322 };
1323
1324 static struct at91_adc_reg_desc at91_adc_register_g20 = {
1325 .channel_base = AT91_ADC_CHR(0),
1326 .drdy_mask = AT91_ADC_DRDY,
1327 .status_register = AT91_ADC_SR,
1328 .trigger_register = AT91_ADC_MR,
1329 };
1330
1331 void __init at91_add_device_adc(struct at91_adc_data *data)
1332 {
1333 if (!data)
1334 return;
1335
1336 if (test_bit(0, &data->channels_used))
1337 at91_set_A_periph(AT91_PIN_PC0, 0);
1338 if (test_bit(1, &data->channels_used))
1339 at91_set_A_periph(AT91_PIN_PC1, 0);
1340 if (test_bit(2, &data->channels_used))
1341 at91_set_A_periph(AT91_PIN_PC2, 0);
1342 if (test_bit(3, &data->channels_used))
1343 at91_set_A_periph(AT91_PIN_PC3, 0);
1344
1345 if (data->use_external_triggers)
1346 at91_set_A_periph(AT91_PIN_PA22, 0);
1347
1348 data->num_channels = 4;
1349 data->startup_time = 10;
1350 data->registers = &at91_adc_register_g20;
1351 data->trigger_number = 4;
1352 data->trigger_list = at91_adc_triggers;
1353
1354 adc_data = *data;
1355 platform_device_register(&at91_adc_device);
1356 }
1357 #else
1358 void __init at91_add_device_adc(struct at91_adc_data *data) {}
1359 #endif
1360
1361 /* -------------------------------------------------------------------- */
1362 /*
1363 * These devices are always present and don't need any board-specific
1364 * setup.
1365 */
1366 static int __init at91_add_standard_devices(void)
1367 {
1368 if (of_have_populated_dt())
1369 return 0;
1370
1371 at91_add_device_rtt();
1372 at91_add_device_watchdog();
1373 at91_add_device_tc();
1374 return 0;
1375 }
1376
1377 arch_initcall(at91_add_standard_devices);
Linux kernel - Deliverables
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