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Merge tag 'locks-v3.16-2' of git://git.samba.org/jlayton/linux
[linux/fpc-iii.git] / arch / arm / mach-at91 / at91sam9261_devices.c
blob29baacb5c3599dcdc46db301958828cb7f78a97d
1 /*
2 * arch/arm/mach-at91/at91sam9261_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 <linux/fb.h>
22 #include <video/atmel_lcdc.h>
23
24 #include <mach/at91sam9261.h>
25 #include <mach/at91sam9261_matrix.h>
26 #include <mach/at91_matrix.h>
27 #include <mach/at91sam9_smc.h>
28 #include <mach/hardware.h>
29
30 #include "board.h"
31 #include "generic.h"
32 #include "gpio.h"
33
34 /* --------------------------------------------------------------------
35 * USB Host
36 * -------------------------------------------------------------------- */
37
38 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
39 static u64 ohci_dmamask = DMA_BIT_MASK(32);
40 static struct at91_usbh_data usbh_data;
41
42 static struct resource usbh_resources[] = {
43 [0] = {
44 .start = AT91SAM9261_UHP_BASE,
45 .end = AT91SAM9261_UHP_BASE + SZ_1M - 1,
46 .flags = IORESOURCE_MEM,
47 },
48 [1] = {
49 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_UHP,
50 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_UHP,
51 .flags = IORESOURCE_IRQ,
52 },
53 };
54
55 static struct platform_device at91sam9261_usbh_device = {
56 .name = "at91_ohci",
57 .id = -1,
58 .dev = {
59 .dma_mask = &ohci_dmamask,
60 .coherent_dma_mask = DMA_BIT_MASK(32),
61 .platform_data = &usbh_data,
62 },
63 .resource = usbh_resources,
64 .num_resources = ARRAY_SIZE(usbh_resources),
65 };
66
67 void __init at91_add_device_usbh(struct at91_usbh_data *data)
68 {
69 int i;
70
71 if (!data)
72 return;
73
74 /* Enable overcurrent notification */
75 for (i = 0; i < data->ports; i++) {
76 if (gpio_is_valid(data->overcurrent_pin[i]))
77 at91_set_gpio_input(data->overcurrent_pin[i], 1);
78 }
79
80 usbh_data = *data;
81 platform_device_register(&at91sam9261_usbh_device);
82 }
83 #else
84 void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
85 #endif
86
87
88 /* --------------------------------------------------------------------
89 * USB Device (Gadget)
90 * -------------------------------------------------------------------- */
91
92 #if defined(CONFIG_USB_AT91) || defined(CONFIG_USB_AT91_MODULE)
93 static struct at91_udc_data udc_data;
94
95 static struct resource udc_resources[] = {
96 [0] = {
97 .start = AT91SAM9261_BASE_UDP,
98 .end = AT91SAM9261_BASE_UDP + SZ_16K - 1,
99 .flags = IORESOURCE_MEM,
100 },
101 [1] = {
102 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_UDP,
103 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_UDP,
104 .flags = IORESOURCE_IRQ,
105 },
106 };
107
108 static struct platform_device at91sam9261_udc_device = {
109 .name = "at91_udc",
110 .id = -1,
111 .dev = {
112 .platform_data = &udc_data,
113 },
114 .resource = udc_resources,
115 .num_resources = ARRAY_SIZE(udc_resources),
116 };
117
118 void __init at91_add_device_udc(struct at91_udc_data *data)
119 {
120 if (!data)
121 return;
122
123 if (gpio_is_valid(data->vbus_pin)) {
124 at91_set_gpio_input(data->vbus_pin, 0);
125 at91_set_deglitch(data->vbus_pin, 1);
126 }
127
128 /* Pullup pin is handled internally by USB device peripheral */
129
130 udc_data = *data;
131 platform_device_register(&at91sam9261_udc_device);
132 }
133 #else
134 void __init at91_add_device_udc(struct at91_udc_data *data) {}
135 #endif
136
137 /* --------------------------------------------------------------------
138 * MMC / SD
139 * -------------------------------------------------------------------- */
140
141 #if IS_ENABLED(CONFIG_MMC_ATMELMCI)
142 static u64 mmc_dmamask = DMA_BIT_MASK(32);
143 static struct mci_platform_data mmc_data;
144
145 static struct resource mmc_resources[] = {
146 [0] = {
147 .start = AT91SAM9261_BASE_MCI,
148 .end = AT91SAM9261_BASE_MCI + SZ_16K - 1,
149 .flags = IORESOURCE_MEM,
150 },
151 [1] = {
152 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_MCI,
153 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_MCI,
154 .flags = IORESOURCE_IRQ,
155 },
156 };
157
158 static struct platform_device at91sam9261_mmc_device = {
159 .name = "atmel_mci",
160 .id = -1,
161 .dev = {
162 .dma_mask = &mmc_dmamask,
163 .coherent_dma_mask = DMA_BIT_MASK(32),
164 .platform_data = &mmc_data,
165 },
166 .resource = mmc_resources,
167 .num_resources = ARRAY_SIZE(mmc_resources),
168 };
169
170 void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data)
171 {
172 if (!data)
173 return;
174
175 if (data->slot[0].bus_width) {
176 /* input/irq */
177 if (gpio_is_valid(data->slot[0].detect_pin)) {
178 at91_set_gpio_input(data->slot[0].detect_pin, 1);
179 at91_set_deglitch(data->slot[0].detect_pin, 1);
180 }
181 if (gpio_is_valid(data->slot[0].wp_pin))
182 at91_set_gpio_input(data->slot[0].wp_pin, 1);
183
184 /* CLK */
185 at91_set_B_periph(AT91_PIN_PA2, 0);
186
187 /* CMD */
188 at91_set_B_periph(AT91_PIN_PA1, 1);
189
190 /* DAT0, maybe DAT1..DAT3 */
191 at91_set_B_periph(AT91_PIN_PA0, 1);
192 if (data->slot[0].bus_width == 4) {
193 at91_set_B_periph(AT91_PIN_PA4, 1);
194 at91_set_B_periph(AT91_PIN_PA5, 1);
195 at91_set_B_periph(AT91_PIN_PA6, 1);
196 }
197
198 mmc_data = *data;
199 platform_device_register(&at91sam9261_mmc_device);
200 }
201 }
202 #else
203 void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data) {}
204 #endif
205
206
207 /* --------------------------------------------------------------------
208 * NAND / SmartMedia
209 * -------------------------------------------------------------------- */
210
211 #if defined(CONFIG_MTD_NAND_ATMEL) || defined(CONFIG_MTD_NAND_ATMEL_MODULE)
212 static struct atmel_nand_data nand_data;
213
214 #define NAND_BASE AT91_CHIPSELECT_3
215
216 static struct resource nand_resources[] = {
217 {
218 .start = NAND_BASE,
219 .end = NAND_BASE + SZ_256M - 1,
220 .flags = IORESOURCE_MEM,
221 }
222 };
223
224 static struct platform_device atmel_nand_device = {
225 .name = "atmel_nand",
226 .id = -1,
227 .dev = {
228 .platform_data = &nand_data,
229 },
230 .resource = nand_resources,
231 .num_resources = ARRAY_SIZE(nand_resources),
232 };
233
234 void __init at91_add_device_nand(struct atmel_nand_data *data)
235 {
236 unsigned long csa;
237
238 if (!data)
239 return;
240
241 csa = at91_matrix_read(AT91_MATRIX_EBICSA);
242 at91_matrix_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
243
244 /* enable pin */
245 if (gpio_is_valid(data->enable_pin))
246 at91_set_gpio_output(data->enable_pin, 1);
247
248 /* ready/busy pin */
249 if (gpio_is_valid(data->rdy_pin))
250 at91_set_gpio_input(data->rdy_pin, 1);
251
252 /* card detect pin */
253 if (gpio_is_valid(data->det_pin))
254 at91_set_gpio_input(data->det_pin, 1);
255
256 at91_set_A_periph(AT91_PIN_PC0, 0); /* NANDOE */
257 at91_set_A_periph(AT91_PIN_PC1, 0); /* NANDWE */
258
259 nand_data = *data;
260 platform_device_register(&atmel_nand_device);
261 }
262
263 #else
264 void __init at91_add_device_nand(struct atmel_nand_data *data) {}
265 #endif
266
267
268 /* --------------------------------------------------------------------
269 * TWI (i2c)
270 * -------------------------------------------------------------------- */
271
272 /*
273 * Prefer the GPIO code since the TWI controller isn't robust
274 * (gets overruns and underruns under load) and can only issue
275 * repeated STARTs in one scenario (the driver doesn't yet handle them).
276 */
277 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
278
279 static struct i2c_gpio_platform_data pdata = {
280 .sda_pin = AT91_PIN_PA7,
281 .sda_is_open_drain = 1,
282 .scl_pin = AT91_PIN_PA8,
283 .scl_is_open_drain = 1,
284 .udelay = 2, /* ~100 kHz */
285 };
286
287 static struct platform_device at91sam9261_twi_device = {
288 .name = "i2c-gpio",
289 .id = 0,
290 .dev.platform_data = &pdata,
291 };
292
293 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
294 {
295 at91_set_GPIO_periph(AT91_PIN_PA7, 1); /* TWD (SDA) */
296 at91_set_multi_drive(AT91_PIN_PA7, 1);
297
298 at91_set_GPIO_periph(AT91_PIN_PA8, 1); /* TWCK (SCL) */
299 at91_set_multi_drive(AT91_PIN_PA8, 1);
300
301 i2c_register_board_info(0, devices, nr_devices);
302 platform_device_register(&at91sam9261_twi_device);
303 }
304
305 #elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
306
307 static struct resource twi_resources[] = {
308 [0] = {
309 .start = AT91SAM9261_BASE_TWI,
310 .end = AT91SAM9261_BASE_TWI + SZ_16K - 1,
311 .flags = IORESOURCE_MEM,
312 },
313 [1] = {
314 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_TWI,
315 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_TWI,
316 .flags = IORESOURCE_IRQ,
317 },
318 };
319
320 static struct platform_device at91sam9261_twi_device = {
321 .id = 0,
322 .resource = twi_resources,
323 .num_resources = ARRAY_SIZE(twi_resources),
324 };
325
326 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
327 {
328 /* IP version is not the same on 9261 and g10 */
329 if (cpu_is_at91sam9g10()) {
330 at91sam9261_twi_device.name = "i2c-at91sam9g10";
331 /* I2C PIO must not be configured as open-drain on this chip */
332 } else {
333 at91sam9261_twi_device.name = "i2c-at91sam9261";
334 at91_set_multi_drive(AT91_PIN_PA7, 1);
335 at91_set_multi_drive(AT91_PIN_PA8, 1);
336 }
337
338 /* pins used for TWI interface */
339 at91_set_A_periph(AT91_PIN_PA7, 0); /* TWD */
340 at91_set_A_periph(AT91_PIN_PA8, 0); /* TWCK */
341
342 i2c_register_board_info(0, devices, nr_devices);
343 platform_device_register(&at91sam9261_twi_device);
344 }
345 #else
346 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
347 #endif
348
349
350 /* --------------------------------------------------------------------
351 * SPI
352 * -------------------------------------------------------------------- */
353
354 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
355 static u64 spi_dmamask = DMA_BIT_MASK(32);
356
357 static struct resource spi0_resources[] = {
358 [0] = {
359 .start = AT91SAM9261_BASE_SPI0,
360 .end = AT91SAM9261_BASE_SPI0 + SZ_16K - 1,
361 .flags = IORESOURCE_MEM,
362 },
363 [1] = {
364 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_SPI0,
365 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_SPI0,
366 .flags = IORESOURCE_IRQ,
367 },
368 };
369
370 static struct platform_device at91sam9261_spi0_device = {
371 .name = "atmel_spi",
372 .id = 0,
373 .dev = {
374 .dma_mask = &spi_dmamask,
375 .coherent_dma_mask = DMA_BIT_MASK(32),
376 },
377 .resource = spi0_resources,
378 .num_resources = ARRAY_SIZE(spi0_resources),
379 };
380
381 static const unsigned spi0_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
382
383 static struct resource spi1_resources[] = {
384 [0] = {
385 .start = AT91SAM9261_BASE_SPI1,
386 .end = AT91SAM9261_BASE_SPI1 + SZ_16K - 1,
387 .flags = IORESOURCE_MEM,
388 },
389 [1] = {
390 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_SPI1,
391 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_SPI1,
392 .flags = IORESOURCE_IRQ,
393 },
394 };
395
396 static struct platform_device at91sam9261_spi1_device = {
397 .name = "atmel_spi",
398 .id = 1,
399 .dev = {
400 .dma_mask = &spi_dmamask,
401 .coherent_dma_mask = DMA_BIT_MASK(32),
402 },
403 .resource = spi1_resources,
404 .num_resources = ARRAY_SIZE(spi1_resources),
405 };
406
407 static const unsigned spi1_standard_cs[4] = { AT91_PIN_PB28, AT91_PIN_PA24, AT91_PIN_PA25, AT91_PIN_PA26 };
408
409 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
410 {
411 int i;
412 unsigned long cs_pin;
413 short enable_spi0 = 0;
414 short enable_spi1 = 0;
415
416 /* Choose SPI chip-selects */
417 for (i = 0; i < nr_devices; i++) {
418 if (devices[i].controller_data)
419 cs_pin = (unsigned long) devices[i].controller_data;
420 else if (devices[i].bus_num == 0)
421 cs_pin = spi0_standard_cs[devices[i].chip_select];
422 else
423 cs_pin = spi1_standard_cs[devices[i].chip_select];
424
425 if (!gpio_is_valid(cs_pin))
426 continue;
427
428 if (devices[i].bus_num == 0)
429 enable_spi0 = 1;
430 else
431 enable_spi1 = 1;
432
433 /* enable chip-select pin */
434 at91_set_gpio_output(cs_pin, 1);
435
436 /* pass chip-select pin to driver */
437 devices[i].controller_data = (void *) cs_pin;
438 }
439
440 spi_register_board_info(devices, nr_devices);
441
442 /* Configure SPI bus(es) */
443 if (enable_spi0) {
444 at91_set_A_periph(AT91_PIN_PA0, 0); /* SPI0_MISO */
445 at91_set_A_periph(AT91_PIN_PA1, 0); /* SPI0_MOSI */
446 at91_set_A_periph(AT91_PIN_PA2, 0); /* SPI0_SPCK */
447
448 platform_device_register(&at91sam9261_spi0_device);
449 }
450 if (enable_spi1) {
451 at91_set_A_periph(AT91_PIN_PB30, 0); /* SPI1_MISO */
452 at91_set_A_periph(AT91_PIN_PB31, 0); /* SPI1_MOSI */
453 at91_set_A_periph(AT91_PIN_PB29, 0); /* SPI1_SPCK */
454
455 platform_device_register(&at91sam9261_spi1_device);
456 }
457 }
458 #else
459 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
460 #endif
461
462
463 /* --------------------------------------------------------------------
464 * LCD Controller
465 * -------------------------------------------------------------------- */
466
467 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
468 static u64 lcdc_dmamask = DMA_BIT_MASK(32);
469 static struct atmel_lcdfb_pdata lcdc_data;
470
471 static struct resource lcdc_resources[] = {
472 [0] = {
473 .start = AT91SAM9261_LCDC_BASE,
474 .end = AT91SAM9261_LCDC_BASE + SZ_4K - 1,
475 .flags = IORESOURCE_MEM,
476 },
477 [1] = {
478 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_LCDC,
479 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_LCDC,
480 .flags = IORESOURCE_IRQ,
481 },
482 #if defined(CONFIG_FB_INTSRAM)
483 [2] = {
484 .start = AT91SAM9261_SRAM_BASE,
485 .end = AT91SAM9261_SRAM_BASE + AT91SAM9261_SRAM_SIZE - 1,
486 .flags = IORESOURCE_MEM,
487 },
488 #endif
489 };
490
491 static struct platform_device at91_lcdc_device = {
492 .id = 0,
493 .dev = {
494 .dma_mask = &lcdc_dmamask,
495 .coherent_dma_mask = DMA_BIT_MASK(32),
496 .platform_data = &lcdc_data,
497 },
498 .resource = lcdc_resources,
499 .num_resources = ARRAY_SIZE(lcdc_resources),
500 };
501
502 void __init at91_add_device_lcdc(struct atmel_lcdfb_pdata *data)
503 {
504 if (!data) {
505 return;
506 }
507
508 if (cpu_is_at91sam9g10())
509 at91_lcdc_device.name = "at91sam9g10-lcdfb";
510 else
511 at91_lcdc_device.name = "at91sam9261-lcdfb";
512
513 #if defined(CONFIG_FB_ATMEL_STN)
514 at91_set_A_periph(AT91_PIN_PB0, 0); /* LCDVSYNC */
515 at91_set_A_periph(AT91_PIN_PB1, 0); /* LCDHSYNC */
516 at91_set_A_periph(AT91_PIN_PB2, 0); /* LCDDOTCK */
517 at91_set_A_periph(AT91_PIN_PB3, 0); /* LCDDEN */
518 at91_set_A_periph(AT91_PIN_PB4, 0); /* LCDCC */
519 at91_set_A_periph(AT91_PIN_PB5, 0); /* LCDD0 */
520 at91_set_A_periph(AT91_PIN_PB6, 0); /* LCDD1 */
521 at91_set_A_periph(AT91_PIN_PB7, 0); /* LCDD2 */
522 at91_set_A_periph(AT91_PIN_PB8, 0); /* LCDD3 */
523 #else
524 at91_set_A_periph(AT91_PIN_PB1, 0); /* LCDHSYNC */
525 at91_set_A_periph(AT91_PIN_PB2, 0); /* LCDDOTCK */
526 at91_set_A_periph(AT91_PIN_PB3, 0); /* LCDDEN */
527 at91_set_A_periph(AT91_PIN_PB4, 0); /* LCDCC */
528 at91_set_A_periph(AT91_PIN_PB7, 0); /* LCDD2 */
529 at91_set_A_periph(AT91_PIN_PB8, 0); /* LCDD3 */
530 at91_set_A_periph(AT91_PIN_PB9, 0); /* LCDD4 */
531 at91_set_A_periph(AT91_PIN_PB10, 0); /* LCDD5 */
532 at91_set_A_periph(AT91_PIN_PB11, 0); /* LCDD6 */
533 at91_set_A_periph(AT91_PIN_PB12, 0); /* LCDD7 */
534 at91_set_A_periph(AT91_PIN_PB15, 0); /* LCDD10 */
535 at91_set_A_periph(AT91_PIN_PB16, 0); /* LCDD11 */
536 at91_set_A_periph(AT91_PIN_PB17, 0); /* LCDD12 */
537 at91_set_A_periph(AT91_PIN_PB18, 0); /* LCDD13 */
538 at91_set_A_periph(AT91_PIN_PB19, 0); /* LCDD14 */
539 at91_set_A_periph(AT91_PIN_PB20, 0); /* LCDD15 */
540 at91_set_B_periph(AT91_PIN_PB23, 0); /* LCDD18 */
541 at91_set_B_periph(AT91_PIN_PB24, 0); /* LCDD19 */
542 at91_set_B_periph(AT91_PIN_PB25, 0); /* LCDD20 */
543 at91_set_B_periph(AT91_PIN_PB26, 0); /* LCDD21 */
544 at91_set_B_periph(AT91_PIN_PB27, 0); /* LCDD22 */
545 at91_set_B_periph(AT91_PIN_PB28, 0); /* LCDD23 */
546 #endif
547
548 if (ARRAY_SIZE(lcdc_resources) > 2) {
549 void __iomem *fb;
550 struct resource *fb_res = &lcdc_resources[2];
551 size_t fb_len = resource_size(fb_res);
552
553 fb = ioremap(fb_res->start, fb_len);
554 if (fb) {
555 memset(fb, 0, fb_len);
556 iounmap(fb);
557 }
558 }
559 lcdc_data = *data;
560 platform_device_register(&at91_lcdc_device);
561 }
562 #else
563 void __init at91_add_device_lcdc(struct atmel_lcdfb_pdata *data) {}
564 #endif
565
566
567 /* --------------------------------------------------------------------
568 * Timer/Counter block
569 * -------------------------------------------------------------------- */
570
571 #ifdef CONFIG_ATMEL_TCLIB
572
573 static struct resource tcb_resources[] = {
574 [0] = {
575 .start = AT91SAM9261_BASE_TCB0,
576 .end = AT91SAM9261_BASE_TCB0 + SZ_16K - 1,
577 .flags = IORESOURCE_MEM,
578 },
579 [1] = {
580 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_TC0,
581 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_TC0,
582 .flags = IORESOURCE_IRQ,
583 },
584 [2] = {
585 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_TC1,
586 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_TC1,
587 .flags = IORESOURCE_IRQ,
588 },
589 [3] = {
590 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_TC2,
591 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_TC2,
592 .flags = IORESOURCE_IRQ,
593 },
594 };
595
596 static struct platform_device at91sam9261_tcb_device = {
597 .name = "atmel_tcb",
598 .id = 0,
599 .resource = tcb_resources,
600 .num_resources = ARRAY_SIZE(tcb_resources),
601 };
602
603 static void __init at91_add_device_tc(void)
604 {
605 platform_device_register(&at91sam9261_tcb_device);
606 }
607 #else
608 static void __init at91_add_device_tc(void) { }
609 #endif
610
611
612 /* --------------------------------------------------------------------
613 * RTT
614 * -------------------------------------------------------------------- */
615
616 static struct resource rtt_resources[] = {
617 {
618 .start = AT91SAM9261_BASE_RTT,
619 .end = AT91SAM9261_BASE_RTT + SZ_16 - 1,
620 .flags = IORESOURCE_MEM,
621 }, {
622 .flags = IORESOURCE_MEM,
623 }, {
624 .flags = IORESOURCE_IRQ,
625 }
626 };
627
628 static struct platform_device at91sam9261_rtt_device = {
629 .name = "at91_rtt",
630 .id = 0,
631 .resource = rtt_resources,
632 };
633
634 #if IS_ENABLED(CONFIG_RTC_DRV_AT91SAM9)
635 static void __init at91_add_device_rtt_rtc(void)
636 {
637 at91sam9261_rtt_device.name = "rtc-at91sam9";
638 /*
639 * The second resource is needed:
640 * GPBR will serve as the storage for RTC time offset
641 */
642 at91sam9261_rtt_device.num_resources = 3;
643 rtt_resources[1].start = AT91SAM9261_BASE_GPBR +
644 4 * CONFIG_RTC_DRV_AT91SAM9_GPBR;
645 rtt_resources[1].end = rtt_resources[1].start + 3;
646 rtt_resources[2].start = NR_IRQS_LEGACY + AT91_ID_SYS;
647 rtt_resources[2].end = NR_IRQS_LEGACY + AT91_ID_SYS;
648 }
649 #else
650 static void __init at91_add_device_rtt_rtc(void)
651 {
652 /* Only one resource is needed: RTT not used as RTC */
653 at91sam9261_rtt_device.num_resources = 1;
654 }
655 #endif
656
657 static void __init at91_add_device_rtt(void)
658 {
659 at91_add_device_rtt_rtc();
660 platform_device_register(&at91sam9261_rtt_device);
661 }
662
663
664 /* --------------------------------------------------------------------
665 * Watchdog
666 * -------------------------------------------------------------------- */
667
668 #if defined(CONFIG_AT91SAM9X_WATCHDOG) || defined(CONFIG_AT91SAM9X_WATCHDOG_MODULE)
669 static struct resource wdt_resources[] = {
670 {
671 .start = AT91SAM9261_BASE_WDT,
672 .end = AT91SAM9261_BASE_WDT + SZ_16 - 1,
673 .flags = IORESOURCE_MEM,
674 }
675 };
676
677 static struct platform_device at91sam9261_wdt_device = {
678 .name = "at91_wdt",
679 .id = -1,
680 .resource = wdt_resources,
681 .num_resources = ARRAY_SIZE(wdt_resources),
682 };
683
684 static void __init at91_add_device_watchdog(void)
685 {
686 platform_device_register(&at91sam9261_wdt_device);
687 }
688 #else
689 static void __init at91_add_device_watchdog(void) {}
690 #endif
691
692
693 /* --------------------------------------------------------------------
694 * SSC -- Synchronous Serial Controller
695 * -------------------------------------------------------------------- */
696
697 #if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE)
698 static u64 ssc0_dmamask = DMA_BIT_MASK(32);
699
700 static struct resource ssc0_resources[] = {
701 [0] = {
702 .start = AT91SAM9261_BASE_SSC0,
703 .end = AT91SAM9261_BASE_SSC0 + SZ_16K - 1,
704 .flags = IORESOURCE_MEM,
705 },
706 [1] = {
707 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_SSC0,
708 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_SSC0,
709 .flags = IORESOURCE_IRQ,
710 },
711 };
712
713 static struct platform_device at91sam9261_ssc0_device = {
714 .name = "at91rm9200_ssc",
715 .id = 0,
716 .dev = {
717 .dma_mask = &ssc0_dmamask,
718 .coherent_dma_mask = DMA_BIT_MASK(32),
719 },
720 .resource = ssc0_resources,
721 .num_resources = ARRAY_SIZE(ssc0_resources),
722 };
723
724 static inline void configure_ssc0_pins(unsigned pins)
725 {
726 if (pins & ATMEL_SSC_TF)
727 at91_set_A_periph(AT91_PIN_PB21, 1);
728 if (pins & ATMEL_SSC_TK)
729 at91_set_A_periph(AT91_PIN_PB22, 1);
730 if (pins & ATMEL_SSC_TD)
731 at91_set_A_periph(AT91_PIN_PB23, 1);
732 if (pins & ATMEL_SSC_RD)
733 at91_set_A_periph(AT91_PIN_PB24, 1);
734 if (pins & ATMEL_SSC_RK)
735 at91_set_A_periph(AT91_PIN_PB25, 1);
736 if (pins & ATMEL_SSC_RF)
737 at91_set_A_periph(AT91_PIN_PB26, 1);
738 }
739
740 static u64 ssc1_dmamask = DMA_BIT_MASK(32);
741
742 static struct resource ssc1_resources[] = {
743 [0] = {
744 .start = AT91SAM9261_BASE_SSC1,
745 .end = AT91SAM9261_BASE_SSC1 + SZ_16K - 1,
746 .flags = IORESOURCE_MEM,
747 },
748 [1] = {
749 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_SSC1,
750 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_SSC1,
751 .flags = IORESOURCE_IRQ,
752 },
753 };
754
755 static struct platform_device at91sam9261_ssc1_device = {
756 .name = "at91rm9200_ssc",
757 .id = 1,
758 .dev = {
759 .dma_mask = &ssc1_dmamask,
760 .coherent_dma_mask = DMA_BIT_MASK(32),
761 },
762 .resource = ssc1_resources,
763 .num_resources = ARRAY_SIZE(ssc1_resources),
764 };
765
766 static inline void configure_ssc1_pins(unsigned pins)
767 {
768 if (pins & ATMEL_SSC_TF)
769 at91_set_B_periph(AT91_PIN_PA17, 1);
770 if (pins & ATMEL_SSC_TK)
771 at91_set_B_periph(AT91_PIN_PA18, 1);
772 if (pins & ATMEL_SSC_TD)
773 at91_set_B_periph(AT91_PIN_PA19, 1);
774 if (pins & ATMEL_SSC_RD)
775 at91_set_B_periph(AT91_PIN_PA20, 1);
776 if (pins & ATMEL_SSC_RK)
777 at91_set_B_periph(AT91_PIN_PA21, 1);
778 if (pins & ATMEL_SSC_RF)
779 at91_set_B_periph(AT91_PIN_PA22, 1);
780 }
781
782 static u64 ssc2_dmamask = DMA_BIT_MASK(32);
783
784 static struct resource ssc2_resources[] = {
785 [0] = {
786 .start = AT91SAM9261_BASE_SSC2,
787 .end = AT91SAM9261_BASE_SSC2 + SZ_16K - 1,
788 .flags = IORESOURCE_MEM,
789 },
790 [1] = {
791 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_SSC2,
792 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_SSC2,
793 .flags = IORESOURCE_IRQ,
794 },
795 };
796
797 static struct platform_device at91sam9261_ssc2_device = {
798 .name = "at91rm9200_ssc",
799 .id = 2,
800 .dev = {
801 .dma_mask = &ssc2_dmamask,
802 .coherent_dma_mask = DMA_BIT_MASK(32),
803 },
804 .resource = ssc2_resources,
805 .num_resources = ARRAY_SIZE(ssc2_resources),
806 };
807
808 static inline void configure_ssc2_pins(unsigned pins)
809 {
810 if (pins & ATMEL_SSC_TF)
811 at91_set_B_periph(AT91_PIN_PC25, 1);
812 if (pins & ATMEL_SSC_TK)
813 at91_set_B_periph(AT91_PIN_PC26, 1);
814 if (pins & ATMEL_SSC_TD)
815 at91_set_B_periph(AT91_PIN_PC27, 1);
816 if (pins & ATMEL_SSC_RD)
817 at91_set_B_periph(AT91_PIN_PC28, 1);
818 if (pins & ATMEL_SSC_RK)
819 at91_set_B_periph(AT91_PIN_PC29, 1);
820 if (pins & ATMEL_SSC_RF)
821 at91_set_B_periph(AT91_PIN_PC30, 1);
822 }
823
824 /*
825 * SSC controllers are accessed through library code, instead of any
826 * kind of all-singing/all-dancing driver. For example one could be
827 * used by a particular I2S audio codec's driver, while another one
828 * on the same system might be used by a custom data capture driver.
829 */
830 void __init at91_add_device_ssc(unsigned id, unsigned pins)
831 {
832 struct platform_device *pdev;
833
834 /*
835 * NOTE: caller is responsible for passing information matching
836 * "pins" to whatever will be using each particular controller.
837 */
838 switch (id) {
839 case AT91SAM9261_ID_SSC0:
840 pdev = &at91sam9261_ssc0_device;
841 configure_ssc0_pins(pins);
842 break;
843 case AT91SAM9261_ID_SSC1:
844 pdev = &at91sam9261_ssc1_device;
845 configure_ssc1_pins(pins);
846 break;
847 case AT91SAM9261_ID_SSC2:
848 pdev = &at91sam9261_ssc2_device;
849 configure_ssc2_pins(pins);
850 break;
851 default:
852 return;
853 }
854
855 platform_device_register(pdev);
856 }
857
858 #else
859 void __init at91_add_device_ssc(unsigned id, unsigned pins) {}
860 #endif
861
862
863 /* --------------------------------------------------------------------
864 * UART
865 * -------------------------------------------------------------------- */
866
867 #if defined(CONFIG_SERIAL_ATMEL)
868 static struct resource dbgu_resources[] = {
869 [0] = {
870 .start = AT91SAM9261_BASE_DBGU,
871 .end = AT91SAM9261_BASE_DBGU + SZ_512 - 1,
872 .flags = IORESOURCE_MEM,
873 },
874 [1] = {
875 .start = NR_IRQS_LEGACY + AT91_ID_SYS,
876 .end = NR_IRQS_LEGACY + AT91_ID_SYS,
877 .flags = IORESOURCE_IRQ,
878 },
879 };
880
881 static struct atmel_uart_data dbgu_data = {
882 .use_dma_tx = 0,
883 .use_dma_rx = 0, /* DBGU not capable of receive DMA */
884 };
885
886 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
887
888 static struct platform_device at91sam9261_dbgu_device = {
889 .name = "atmel_usart",
890 .id = 0,
891 .dev = {
892 .dma_mask = &dbgu_dmamask,
893 .coherent_dma_mask = DMA_BIT_MASK(32),
894 .platform_data = &dbgu_data,
895 },
896 .resource = dbgu_resources,
897 .num_resources = ARRAY_SIZE(dbgu_resources),
898 };
899
900 static inline void configure_dbgu_pins(void)
901 {
902 at91_set_A_periph(AT91_PIN_PA9, 0); /* DRXD */
903 at91_set_A_periph(AT91_PIN_PA10, 1); /* DTXD */
904 }
905
906 static struct resource uart0_resources[] = {
907 [0] = {
908 .start = AT91SAM9261_BASE_US0,
909 .end = AT91SAM9261_BASE_US0 + SZ_16K - 1,
910 .flags = IORESOURCE_MEM,
911 },
912 [1] = {
913 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_US0,
914 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_US0,
915 .flags = IORESOURCE_IRQ,
916 },
917 };
918
919 static struct atmel_uart_data uart0_data = {
920 .use_dma_tx = 1,
921 .use_dma_rx = 1,
922 };
923
924 static u64 uart0_dmamask = DMA_BIT_MASK(32);
925
926 static struct platform_device at91sam9261_uart0_device = {
927 .name = "atmel_usart",
928 .id = 1,
929 .dev = {
930 .dma_mask = &uart0_dmamask,
931 .coherent_dma_mask = DMA_BIT_MASK(32),
932 .platform_data = &uart0_data,
933 },
934 .resource = uart0_resources,
935 .num_resources = ARRAY_SIZE(uart0_resources),
936 };
937
938 static inline void configure_usart0_pins(unsigned pins)
939 {
940 at91_set_A_periph(AT91_PIN_PC8, 1); /* TXD0 */
941 at91_set_A_periph(AT91_PIN_PC9, 0); /* RXD0 */
942
943 if (pins & ATMEL_UART_RTS)
944 at91_set_A_periph(AT91_PIN_PC10, 0); /* RTS0 */
945 if (pins & ATMEL_UART_CTS)
946 at91_set_A_periph(AT91_PIN_PC11, 0); /* CTS0 */
947 }
948
949 static struct resource uart1_resources[] = {
950 [0] = {
951 .start = AT91SAM9261_BASE_US1,
952 .end = AT91SAM9261_BASE_US1 + SZ_16K - 1,
953 .flags = IORESOURCE_MEM,
954 },
955 [1] = {
956 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_US1,
957 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_US1,
958 .flags = IORESOURCE_IRQ,
959 },
960 };
961
962 static struct atmel_uart_data uart1_data = {
963 .use_dma_tx = 1,
964 .use_dma_rx = 1,
965 };
966
967 static u64 uart1_dmamask = DMA_BIT_MASK(32);
968
969 static struct platform_device at91sam9261_uart1_device = {
970 .name = "atmel_usart",
971 .id = 2,
972 .dev = {
973 .dma_mask = &uart1_dmamask,
974 .coherent_dma_mask = DMA_BIT_MASK(32),
975 .platform_data = &uart1_data,
976 },
977 .resource = uart1_resources,
978 .num_resources = ARRAY_SIZE(uart1_resources),
979 };
980
981 static inline void configure_usart1_pins(unsigned pins)
982 {
983 at91_set_A_periph(AT91_PIN_PC12, 1); /* TXD1 */
984 at91_set_A_periph(AT91_PIN_PC13, 0); /* RXD1 */
985
986 if (pins & ATMEL_UART_RTS)
987 at91_set_B_periph(AT91_PIN_PA12, 0); /* RTS1 */
988 if (pins & ATMEL_UART_CTS)
989 at91_set_B_periph(AT91_PIN_PA13, 0); /* CTS1 */
990 }
991
992 static struct resource uart2_resources[] = {
993 [0] = {
994 .start = AT91SAM9261_BASE_US2,
995 .end = AT91SAM9261_BASE_US2 + SZ_16K - 1,
996 .flags = IORESOURCE_MEM,
997 },
998 [1] = {
999 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_US2,
1000 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_US2,
1001 .flags = IORESOURCE_IRQ,
1002 },
1003 };
1004
1005 static struct atmel_uart_data uart2_data = {
1006 .use_dma_tx = 1,
1007 .use_dma_rx = 1,
1008 };
1009
1010 static u64 uart2_dmamask = DMA_BIT_MASK(32);
1011
1012 static struct platform_device at91sam9261_uart2_device = {
1013 .name = "atmel_usart",
1014 .id = 3,
1015 .dev = {
1016 .dma_mask = &uart2_dmamask,
1017 .coherent_dma_mask = DMA_BIT_MASK(32),
1018 .platform_data = &uart2_data,
1019 },
1020 .resource = uart2_resources,
1021 .num_resources = ARRAY_SIZE(uart2_resources),
1022 };
1023
1024 static inline void configure_usart2_pins(unsigned pins)
1025 {
1026 at91_set_A_periph(AT91_PIN_PC15, 0); /* RXD2 */
1027 at91_set_A_periph(AT91_PIN_PC14, 1); /* TXD2 */
1028
1029 if (pins & ATMEL_UART_RTS)
1030 at91_set_B_periph(AT91_PIN_PA15, 0); /* RTS2*/
1031 if (pins & ATMEL_UART_CTS)
1032 at91_set_B_periph(AT91_PIN_PA16, 0); /* CTS2 */
1033 }
1034
1035 static struct platform_device *__initdata at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
1036
1037 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
1038 {
1039 struct platform_device *pdev;
1040 struct atmel_uart_data *pdata;
1041
1042 switch (id) {
1043 case 0: /* DBGU */
1044 pdev = &at91sam9261_dbgu_device;
1045 configure_dbgu_pins();
1046 break;
1047 case AT91SAM9261_ID_US0:
1048 pdev = &at91sam9261_uart0_device;
1049 configure_usart0_pins(pins);
1050 break;
1051 case AT91SAM9261_ID_US1:
1052 pdev = &at91sam9261_uart1_device;
1053 configure_usart1_pins(pins);
1054 break;
1055 case AT91SAM9261_ID_US2:
1056 pdev = &at91sam9261_uart2_device;
1057 configure_usart2_pins(pins);
1058 break;
1059 default:
1060 return;
1061 }
1062 pdata = pdev->dev.platform_data;
1063 pdata->num = portnr; /* update to mapped ID */
1064
1065 if (portnr < ATMEL_MAX_UART)
1066 at91_uarts[portnr] = pdev;
1067 }
1068
1069 void __init at91_add_device_serial(void)
1070 {
1071 int i;
1072
1073 for (i = 0; i < ATMEL_MAX_UART; i++) {
1074 if (at91_uarts[i])
1075 platform_device_register(at91_uarts[i]);
1076 }
1077 }
1078 #else
1079 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
1080 void __init at91_add_device_serial(void) {}
1081 #endif
1082
1083
1084 /* -------------------------------------------------------------------- */
1085
1086 /*
1087 * These devices are always present and don't need any board-specific
1088 * setup.
1089 */
1090 static int __init at91_add_standard_devices(void)
1091 {
1092 at91_add_device_rtt();
1093 at91_add_device_watchdog();
1094 at91_add_device_tc();
1095 return 0;
1096 }
1097
1098 arch_initcall(at91_add_standard_devices);
Linux with added FPC-III support