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Merge branch 'i2c-embedded/for-next' of git://git.pengutronix.de/git/wsa/linux
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / arm / mach-at91 / at91sam9261_devices.c
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/board.h>
25 #include <mach/at91sam9261.h>
26 #include <mach/at91sam9261_matrix.h>
27 #include <mach/at91_matrix.h>
28 #include <mach/at91sam9_smc.h>
29
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 = AT91SAM9261_UHP_BASE,
44 .end = AT91SAM9261_UHP_BASE + SZ_1M - 1,
45 .flags = IORESOURCE_MEM,
46 },
47 [1] = {
48 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_UHP,
49 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_UHP,
50 .flags = IORESOURCE_IRQ,
51 },
52 };
53
54 static struct platform_device at91sam9261_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 (data->overcurrent_pin[i])
76 at91_set_gpio_input(data->overcurrent_pin[i], 1);
77 }
78
79 usbh_data = *data;
80 platform_device_register(&at91sam9261_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 = AT91SAM9261_BASE_UDP,
97 .end = AT91SAM9261_BASE_UDP + SZ_16K - 1,
98 .flags = IORESOURCE_MEM,
99 },
100 [1] = {
101 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_UDP,
102 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_UDP,
103 .flags = IORESOURCE_IRQ,
104 },
105 };
106
107 static struct platform_device at91sam9261_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(&at91sam9261_udc_device);
131 }
132 #else
133 void __init at91_add_device_udc(struct at91_udc_data *data) {}
134 #endif
135
136 /* --------------------------------------------------------------------
137 * MMC / SD
138 * -------------------------------------------------------------------- */
139
140 #if IS_ENABLED(CONFIG_MMC_ATMELMCI)
141 static u64 mmc_dmamask = DMA_BIT_MASK(32);
142 static struct mci_platform_data mmc_data;
143
144 static struct resource mmc_resources[] = {
145 [0] = {
146 .start = AT91SAM9261_BASE_MCI,
147 .end = AT91SAM9261_BASE_MCI + SZ_16K - 1,
148 .flags = IORESOURCE_MEM,
149 },
150 [1] = {
151 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_MCI,
152 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_MCI,
153 .flags = IORESOURCE_IRQ,
154 },
155 };
156
157 static struct platform_device at91sam9261_mmc_device = {
158 .name = "atmel_mci",
159 .id = -1,
160 .dev = {
161 .dma_mask = &mmc_dmamask,
162 .coherent_dma_mask = DMA_BIT_MASK(32),
163 .platform_data = &mmc_data,
164 },
165 .resource = mmc_resources,
166 .num_resources = ARRAY_SIZE(mmc_resources),
167 };
168
169 void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data)
170 {
171 if (!data)
172 return;
173
174 if (data->slot[0].bus_width) {
175 /* input/irq */
176 if (gpio_is_valid(data->slot[0].detect_pin)) {
177 at91_set_gpio_input(data->slot[0].detect_pin, 1);
178 at91_set_deglitch(data->slot[0].detect_pin, 1);
179 }
180 if (gpio_is_valid(data->slot[0].wp_pin))
181 at91_set_gpio_input(data->slot[0].wp_pin, 1);
182
183 /* CLK */
184 at91_set_B_periph(AT91_PIN_PA2, 0);
185
186 /* CMD */
187 at91_set_B_periph(AT91_PIN_PA1, 1);
188
189 /* DAT0, maybe DAT1..DAT3 */
190 at91_set_B_periph(AT91_PIN_PA0, 1);
191 if (data->slot[0].bus_width == 4) {
192 at91_set_B_periph(AT91_PIN_PA4, 1);
193 at91_set_B_periph(AT91_PIN_PA5, 1);
194 at91_set_B_periph(AT91_PIN_PA6, 1);
195 }
196
197 mmc_data = *data;
198 platform_device_register(&at91sam9261_mmc_device);
199 }
200 }
201 #else
202 void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data) {}
203 #endif
204
205
206 /* --------------------------------------------------------------------
207 * NAND / SmartMedia
208 * -------------------------------------------------------------------- */
209
210 #if defined(CONFIG_MTD_NAND_ATMEL) || defined(CONFIG_MTD_NAND_ATMEL_MODULE)
211 static struct atmel_nand_data nand_data;
212
213 #define NAND_BASE AT91_CHIPSELECT_3
214
215 static struct resource nand_resources[] = {
216 {
217 .start = NAND_BASE,
218 .end = NAND_BASE + SZ_256M - 1,
219 .flags = IORESOURCE_MEM,
220 }
221 };
222
223 static struct platform_device atmel_nand_device = {
224 .name = "atmel_nand",
225 .id = -1,
226 .dev = {
227 .platform_data = &nand_data,
228 },
229 .resource = nand_resources,
230 .num_resources = ARRAY_SIZE(nand_resources),
231 };
232
233 void __init at91_add_device_nand(struct atmel_nand_data *data)
234 {
235 unsigned long csa;
236
237 if (!data)
238 return;
239
240 csa = at91_matrix_read(AT91_MATRIX_EBICSA);
241 at91_matrix_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
242
243 /* enable pin */
244 if (gpio_is_valid(data->enable_pin))
245 at91_set_gpio_output(data->enable_pin, 1);
246
247 /* ready/busy pin */
248 if (gpio_is_valid(data->rdy_pin))
249 at91_set_gpio_input(data->rdy_pin, 1);
250
251 /* card detect pin */
252 if (gpio_is_valid(data->det_pin))
253 at91_set_gpio_input(data->det_pin, 1);
254
255 at91_set_A_periph(AT91_PIN_PC0, 0); /* NANDOE */
256 at91_set_A_periph(AT91_PIN_PC1, 0); /* NANDWE */
257
258 nand_data = *data;
259 platform_device_register(&atmel_nand_device);
260 }
261
262 #else
263 void __init at91_add_device_nand(struct atmel_nand_data *data) {}
264 #endif
265
266
267 /* --------------------------------------------------------------------
268 * TWI (i2c)
269 * -------------------------------------------------------------------- */
270
271 /*
272 * Prefer the GPIO code since the TWI controller isn't robust
273 * (gets overruns and underruns under load) and can only issue
274 * repeated STARTs in one scenario (the driver doesn't yet handle them).
275 */
276 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
277
278 static struct i2c_gpio_platform_data pdata = {
279 .sda_pin = AT91_PIN_PA7,
280 .sda_is_open_drain = 1,
281 .scl_pin = AT91_PIN_PA8,
282 .scl_is_open_drain = 1,
283 .udelay = 2, /* ~100 kHz */
284 };
285
286 static struct platform_device at91sam9261_twi_device = {
287 .name = "i2c-gpio",
288 .id = -1,
289 .dev.platform_data = &pdata,
290 };
291
292 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
293 {
294 at91_set_GPIO_periph(AT91_PIN_PA7, 1); /* TWD (SDA) */
295 at91_set_multi_drive(AT91_PIN_PA7, 1);
296
297 at91_set_GPIO_periph(AT91_PIN_PA8, 1); /* TWCK (SCL) */
298 at91_set_multi_drive(AT91_PIN_PA8, 1);
299
300 i2c_register_board_info(0, devices, nr_devices);
301 platform_device_register(&at91sam9261_twi_device);
302 }
303
304 #elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
305
306 static struct resource twi_resources[] = {
307 [0] = {
308 .start = AT91SAM9261_BASE_TWI,
309 .end = AT91SAM9261_BASE_TWI + SZ_16K - 1,
310 .flags = IORESOURCE_MEM,
311 },
312 [1] = {
313 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_TWI,
314 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_TWI,
315 .flags = IORESOURCE_IRQ,
316 },
317 };
318
319 static struct platform_device at91sam9261_twi_device = {
320 .id = -1,
321 .resource = twi_resources,
322 .num_resources = ARRAY_SIZE(twi_resources),
323 };
324
325 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
326 {
327 /* IP version is not the same on 9261 and g10 */
328 if (cpu_is_at91sam9g10()) {
329 at91sam9261_twi_device.name = "i2c-at91sam9g10";
330 /* I2C PIO must not be configured as open-drain on this chip */
331 } else {
332 at91sam9261_twi_device.name = "i2c-at91sam9261";
333 at91_set_multi_drive(AT91_PIN_PA7, 1);
334 at91_set_multi_drive(AT91_PIN_PA8, 1);
335 }
336
337 /* pins used for TWI interface */
338 at91_set_A_periph(AT91_PIN_PA7, 0); /* TWD */
339 at91_set_A_periph(AT91_PIN_PA8, 0); /* TWCK */
340
341 i2c_register_board_info(0, devices, nr_devices);
342 platform_device_register(&at91sam9261_twi_device);
343 }
344 #else
345 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
346 #endif
347
348
349 /* --------------------------------------------------------------------
350 * SPI
351 * -------------------------------------------------------------------- */
352
353 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
354 static u64 spi_dmamask = DMA_BIT_MASK(32);
355
356 static struct resource spi0_resources[] = {
357 [0] = {
358 .start = AT91SAM9261_BASE_SPI0,
359 .end = AT91SAM9261_BASE_SPI0 + SZ_16K - 1,
360 .flags = IORESOURCE_MEM,
361 },
362 [1] = {
363 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_SPI0,
364 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_SPI0,
365 .flags = IORESOURCE_IRQ,
366 },
367 };
368
369 static struct platform_device at91sam9261_spi0_device = {
370 .name = "atmel_spi",
371 .id = 0,
372 .dev = {
373 .dma_mask = &spi_dmamask,
374 .coherent_dma_mask = DMA_BIT_MASK(32),
375 },
376 .resource = spi0_resources,
377 .num_resources = ARRAY_SIZE(spi0_resources),
378 };
379
380 static const unsigned spi0_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
381
382 static struct resource spi1_resources[] = {
383 [0] = {
384 .start = AT91SAM9261_BASE_SPI1,
385 .end = AT91SAM9261_BASE_SPI1 + SZ_16K - 1,
386 .flags = IORESOURCE_MEM,
387 },
388 [1] = {
389 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_SPI1,
390 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_SPI1,
391 .flags = IORESOURCE_IRQ,
392 },
393 };
394
395 static struct platform_device at91sam9261_spi1_device = {
396 .name = "atmel_spi",
397 .id = 1,
398 .dev = {
399 .dma_mask = &spi_dmamask,
400 .coherent_dma_mask = DMA_BIT_MASK(32),
401 },
402 .resource = spi1_resources,
403 .num_resources = ARRAY_SIZE(spi1_resources),
404 };
405
406 static const unsigned spi1_standard_cs[4] = { AT91_PIN_PB28, AT91_PIN_PA24, AT91_PIN_PA25, AT91_PIN_PA26 };
407
408 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
409 {
410 int i;
411 unsigned long cs_pin;
412 short enable_spi0 = 0;
413 short enable_spi1 = 0;
414
415 /* Choose SPI chip-selects */
416 for (i = 0; i < nr_devices; i++) {
417 if (devices[i].controller_data)
418 cs_pin = (unsigned long) devices[i].controller_data;
419 else if (devices[i].bus_num == 0)
420 cs_pin = spi0_standard_cs[devices[i].chip_select];
421 else
422 cs_pin = spi1_standard_cs[devices[i].chip_select];
423
424 if (!gpio_is_valid(cs_pin))
425 continue;
426
427 if (devices[i].bus_num == 0)
428 enable_spi0 = 1;
429 else
430 enable_spi1 = 1;
431
432 /* enable chip-select pin */
433 at91_set_gpio_output(cs_pin, 1);
434
435 /* pass chip-select pin to driver */
436 devices[i].controller_data = (void *) cs_pin;
437 }
438
439 spi_register_board_info(devices, nr_devices);
440
441 /* Configure SPI bus(es) */
442 if (enable_spi0) {
443 at91_set_A_periph(AT91_PIN_PA0, 0); /* SPI0_MISO */
444 at91_set_A_periph(AT91_PIN_PA1, 0); /* SPI0_MOSI */
445 at91_set_A_periph(AT91_PIN_PA2, 0); /* SPI0_SPCK */
446
447 platform_device_register(&at91sam9261_spi0_device);
448 }
449 if (enable_spi1) {
450 at91_set_A_periph(AT91_PIN_PB30, 0); /* SPI1_MISO */
451 at91_set_A_periph(AT91_PIN_PB31, 0); /* SPI1_MOSI */
452 at91_set_A_periph(AT91_PIN_PB29, 0); /* SPI1_SPCK */
453
454 platform_device_register(&at91sam9261_spi1_device);
455 }
456 }
457 #else
458 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
459 #endif
460
461
462 /* --------------------------------------------------------------------
463 * LCD Controller
464 * -------------------------------------------------------------------- */
465
466 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
467 static u64 lcdc_dmamask = DMA_BIT_MASK(32);
468 static struct atmel_lcdfb_info lcdc_data;
469
470 static struct resource lcdc_resources[] = {
471 [0] = {
472 .start = AT91SAM9261_LCDC_BASE,
473 .end = AT91SAM9261_LCDC_BASE + SZ_4K - 1,
474 .flags = IORESOURCE_MEM,
475 },
476 [1] = {
477 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_LCDC,
478 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_LCDC,
479 .flags = IORESOURCE_IRQ,
480 },
481 #if defined(CONFIG_FB_INTSRAM)
482 [2] = {
483 .start = AT91SAM9261_SRAM_BASE,
484 .end = AT91SAM9261_SRAM_BASE + AT91SAM9261_SRAM_SIZE - 1,
485 .flags = IORESOURCE_MEM,
486 },
487 #endif
488 };
489
490 static struct platform_device at91_lcdc_device = {
491 .name = "atmel_lcdfb",
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_info *data)
503 {
504 if (!data) {
505 return;
506 }
507
508 #if defined(CONFIG_FB_ATMEL_STN)
509 at91_set_A_periph(AT91_PIN_PB0, 0); /* LCDVSYNC */
510 at91_set_A_periph(AT91_PIN_PB1, 0); /* LCDHSYNC */
511 at91_set_A_periph(AT91_PIN_PB2, 0); /* LCDDOTCK */
512 at91_set_A_periph(AT91_PIN_PB3, 0); /* LCDDEN */
513 at91_set_A_periph(AT91_PIN_PB4, 0); /* LCDCC */
514 at91_set_A_periph(AT91_PIN_PB5, 0); /* LCDD0 */
515 at91_set_A_periph(AT91_PIN_PB6, 0); /* LCDD1 */
516 at91_set_A_periph(AT91_PIN_PB7, 0); /* LCDD2 */
517 at91_set_A_periph(AT91_PIN_PB8, 0); /* LCDD3 */
518 #else
519 at91_set_A_periph(AT91_PIN_PB1, 0); /* LCDHSYNC */
520 at91_set_A_periph(AT91_PIN_PB2, 0); /* LCDDOTCK */
521 at91_set_A_periph(AT91_PIN_PB3, 0); /* LCDDEN */
522 at91_set_A_periph(AT91_PIN_PB4, 0); /* LCDCC */
523 at91_set_A_periph(AT91_PIN_PB7, 0); /* LCDD2 */
524 at91_set_A_periph(AT91_PIN_PB8, 0); /* LCDD3 */
525 at91_set_A_periph(AT91_PIN_PB9, 0); /* LCDD4 */
526 at91_set_A_periph(AT91_PIN_PB10, 0); /* LCDD5 */
527 at91_set_A_periph(AT91_PIN_PB11, 0); /* LCDD6 */
528 at91_set_A_periph(AT91_PIN_PB12, 0); /* LCDD7 */
529 at91_set_A_periph(AT91_PIN_PB15, 0); /* LCDD10 */
530 at91_set_A_periph(AT91_PIN_PB16, 0); /* LCDD11 */
531 at91_set_A_periph(AT91_PIN_PB17, 0); /* LCDD12 */
532 at91_set_A_periph(AT91_PIN_PB18, 0); /* LCDD13 */
533 at91_set_A_periph(AT91_PIN_PB19, 0); /* LCDD14 */
534 at91_set_A_periph(AT91_PIN_PB20, 0); /* LCDD15 */
535 at91_set_B_periph(AT91_PIN_PB23, 0); /* LCDD18 */
536 at91_set_B_periph(AT91_PIN_PB24, 0); /* LCDD19 */
537 at91_set_B_periph(AT91_PIN_PB25, 0); /* LCDD20 */
538 at91_set_B_periph(AT91_PIN_PB26, 0); /* LCDD21 */
539 at91_set_B_periph(AT91_PIN_PB27, 0); /* LCDD22 */
540 at91_set_B_periph(AT91_PIN_PB28, 0); /* LCDD23 */
541 #endif
542
543 if (ARRAY_SIZE(lcdc_resources) > 2) {
544 void __iomem *fb;
545 struct resource *fb_res = &lcdc_resources[2];
546 size_t fb_len = resource_size(fb_res);
547
548 fb = ioremap(fb_res->start, fb_len);
549 if (fb) {
550 memset(fb, 0, fb_len);
551 iounmap(fb);
552 }
553 }
554 lcdc_data = *data;
555 platform_device_register(&at91_lcdc_device);
556 }
557 #else
558 void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data) {}
559 #endif
560
561
562 /* --------------------------------------------------------------------
563 * Timer/Counter block
564 * -------------------------------------------------------------------- */
565
566 #ifdef CONFIG_ATMEL_TCLIB
567
568 static struct resource tcb_resources[] = {
569 [0] = {
570 .start = AT91SAM9261_BASE_TCB0,
571 .end = AT91SAM9261_BASE_TCB0 + SZ_16K - 1,
572 .flags = IORESOURCE_MEM,
573 },
574 [1] = {
575 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_TC0,
576 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_TC0,
577 .flags = IORESOURCE_IRQ,
578 },
579 [2] = {
580 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_TC1,
581 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_TC1,
582 .flags = IORESOURCE_IRQ,
583 },
584 [3] = {
585 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_TC2,
586 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_TC2,
587 .flags = IORESOURCE_IRQ,
588 },
589 };
590
591 static struct platform_device at91sam9261_tcb_device = {
592 .name = "atmel_tcb",
593 .id = 0,
594 .resource = tcb_resources,
595 .num_resources = ARRAY_SIZE(tcb_resources),
596 };
597
598 static void __init at91_add_device_tc(void)
599 {
600 platform_device_register(&at91sam9261_tcb_device);
601 }
602 #else
603 static void __init at91_add_device_tc(void) { }
604 #endif
605
606
607 /* --------------------------------------------------------------------
608 * RTT
609 * -------------------------------------------------------------------- */
610
611 static struct resource rtt_resources[] = {
612 {
613 .start = AT91SAM9261_BASE_RTT,
614 .end = AT91SAM9261_BASE_RTT + SZ_16 - 1,
615 .flags = IORESOURCE_MEM,
616 }, {
617 .flags = IORESOURCE_MEM,
618 }, {
619 .flags = IORESOURCE_IRQ,
620 }
621 };
622
623 static struct platform_device at91sam9261_rtt_device = {
624 .name = "at91_rtt",
625 .id = 0,
626 .resource = rtt_resources,
627 };
628
629 #if IS_ENABLED(CONFIG_RTC_DRV_AT91SAM9)
630 static void __init at91_add_device_rtt_rtc(void)
631 {
632 at91sam9261_rtt_device.name = "rtc-at91sam9";
633 /*
634 * The second resource is needed:
635 * GPBR will serve as the storage for RTC time offset
636 */
637 at91sam9261_rtt_device.num_resources = 3;
638 rtt_resources[1].start = AT91SAM9261_BASE_GPBR +
639 4 * CONFIG_RTC_DRV_AT91SAM9_GPBR;
640 rtt_resources[1].end = rtt_resources[1].start + 3;
641 rtt_resources[2].start = NR_IRQS_LEGACY + AT91_ID_SYS;
642 rtt_resources[2].end = NR_IRQS_LEGACY + AT91_ID_SYS;
643 }
644 #else
645 static void __init at91_add_device_rtt_rtc(void)
646 {
647 /* Only one resource is needed: RTT not used as RTC */
648 at91sam9261_rtt_device.num_resources = 1;
649 }
650 #endif
651
652 static void __init at91_add_device_rtt(void)
653 {
654 at91_add_device_rtt_rtc();
655 platform_device_register(&at91sam9261_rtt_device);
656 }
657
658
659 /* --------------------------------------------------------------------
660 * Watchdog
661 * -------------------------------------------------------------------- */
662
663 #if defined(CONFIG_AT91SAM9X_WATCHDOG) || defined(CONFIG_AT91SAM9X_WATCHDOG_MODULE)
664 static struct resource wdt_resources[] = {
665 {
666 .start = AT91SAM9261_BASE_WDT,
667 .end = AT91SAM9261_BASE_WDT + SZ_16 - 1,
668 .flags = IORESOURCE_MEM,
669 }
670 };
671
672 static struct platform_device at91sam9261_wdt_device = {
673 .name = "at91_wdt",
674 .id = -1,
675 .resource = wdt_resources,
676 .num_resources = ARRAY_SIZE(wdt_resources),
677 };
678
679 static void __init at91_add_device_watchdog(void)
680 {
681 platform_device_register(&at91sam9261_wdt_device);
682 }
683 #else
684 static void __init at91_add_device_watchdog(void) {}
685 #endif
686
687
688 /* --------------------------------------------------------------------
689 * SSC -- Synchronous Serial Controller
690 * -------------------------------------------------------------------- */
691
692 #if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE)
693 static u64 ssc0_dmamask = DMA_BIT_MASK(32);
694
695 static struct resource ssc0_resources[] = {
696 [0] = {
697 .start = AT91SAM9261_BASE_SSC0,
698 .end = AT91SAM9261_BASE_SSC0 + SZ_16K - 1,
699 .flags = IORESOURCE_MEM,
700 },
701 [1] = {
702 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_SSC0,
703 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_SSC0,
704 .flags = IORESOURCE_IRQ,
705 },
706 };
707
708 static struct platform_device at91sam9261_ssc0_device = {
709 .name = "ssc",
710 .id = 0,
711 .dev = {
712 .dma_mask = &ssc0_dmamask,
713 .coherent_dma_mask = DMA_BIT_MASK(32),
714 },
715 .resource = ssc0_resources,
716 .num_resources = ARRAY_SIZE(ssc0_resources),
717 };
718
719 static inline void configure_ssc0_pins(unsigned pins)
720 {
721 if (pins & ATMEL_SSC_TF)
722 at91_set_A_periph(AT91_PIN_PB21, 1);
723 if (pins & ATMEL_SSC_TK)
724 at91_set_A_periph(AT91_PIN_PB22, 1);
725 if (pins & ATMEL_SSC_TD)
726 at91_set_A_periph(AT91_PIN_PB23, 1);
727 if (pins & ATMEL_SSC_RD)
728 at91_set_A_periph(AT91_PIN_PB24, 1);
729 if (pins & ATMEL_SSC_RK)
730 at91_set_A_periph(AT91_PIN_PB25, 1);
731 if (pins & ATMEL_SSC_RF)
732 at91_set_A_periph(AT91_PIN_PB26, 1);
733 }
734
735 static u64 ssc1_dmamask = DMA_BIT_MASK(32);
736
737 static struct resource ssc1_resources[] = {
738 [0] = {
739 .start = AT91SAM9261_BASE_SSC1,
740 .end = AT91SAM9261_BASE_SSC1 + SZ_16K - 1,
741 .flags = IORESOURCE_MEM,
742 },
743 [1] = {
744 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_SSC1,
745 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_SSC1,
746 .flags = IORESOURCE_IRQ,
747 },
748 };
749
750 static struct platform_device at91sam9261_ssc1_device = {
751 .name = "ssc",
752 .id = 1,
753 .dev = {
754 .dma_mask = &ssc1_dmamask,
755 .coherent_dma_mask = DMA_BIT_MASK(32),
756 },
757 .resource = ssc1_resources,
758 .num_resources = ARRAY_SIZE(ssc1_resources),
759 };
760
761 static inline void configure_ssc1_pins(unsigned pins)
762 {
763 if (pins & ATMEL_SSC_TF)
764 at91_set_B_periph(AT91_PIN_PA17, 1);
765 if (pins & ATMEL_SSC_TK)
766 at91_set_B_periph(AT91_PIN_PA18, 1);
767 if (pins & ATMEL_SSC_TD)
768 at91_set_B_periph(AT91_PIN_PA19, 1);
769 if (pins & ATMEL_SSC_RD)
770 at91_set_B_periph(AT91_PIN_PA20, 1);
771 if (pins & ATMEL_SSC_RK)
772 at91_set_B_periph(AT91_PIN_PA21, 1);
773 if (pins & ATMEL_SSC_RF)
774 at91_set_B_periph(AT91_PIN_PA22, 1);
775 }
776
777 static u64 ssc2_dmamask = DMA_BIT_MASK(32);
778
779 static struct resource ssc2_resources[] = {
780 [0] = {
781 .start = AT91SAM9261_BASE_SSC2,
782 .end = AT91SAM9261_BASE_SSC2 + SZ_16K - 1,
783 .flags = IORESOURCE_MEM,
784 },
785 [1] = {
786 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_SSC2,
787 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_SSC2,
788 .flags = IORESOURCE_IRQ,
789 },
790 };
791
792 static struct platform_device at91sam9261_ssc2_device = {
793 .name = "ssc",
794 .id = 2,
795 .dev = {
796 .dma_mask = &ssc2_dmamask,
797 .coherent_dma_mask = DMA_BIT_MASK(32),
798 },
799 .resource = ssc2_resources,
800 .num_resources = ARRAY_SIZE(ssc2_resources),
801 };
802
803 static inline void configure_ssc2_pins(unsigned pins)
804 {
805 if (pins & ATMEL_SSC_TF)
806 at91_set_B_periph(AT91_PIN_PC25, 1);
807 if (pins & ATMEL_SSC_TK)
808 at91_set_B_periph(AT91_PIN_PC26, 1);
809 if (pins & ATMEL_SSC_TD)
810 at91_set_B_periph(AT91_PIN_PC27, 1);
811 if (pins & ATMEL_SSC_RD)
812 at91_set_B_periph(AT91_PIN_PC28, 1);
813 if (pins & ATMEL_SSC_RK)
814 at91_set_B_periph(AT91_PIN_PC29, 1);
815 if (pins & ATMEL_SSC_RF)
816 at91_set_B_periph(AT91_PIN_PC30, 1);
817 }
818
819 /*
820 * SSC controllers are accessed through library code, instead of any
821 * kind of all-singing/all-dancing driver. For example one could be
822 * used by a particular I2S audio codec's driver, while another one
823 * on the same system might be used by a custom data capture driver.
824 */
825 void __init at91_add_device_ssc(unsigned id, unsigned pins)
826 {
827 struct platform_device *pdev;
828
829 /*
830 * NOTE: caller is responsible for passing information matching
831 * "pins" to whatever will be using each particular controller.
832 */
833 switch (id) {
834 case AT91SAM9261_ID_SSC0:
835 pdev = &at91sam9261_ssc0_device;
836 configure_ssc0_pins(pins);
837 break;
838 case AT91SAM9261_ID_SSC1:
839 pdev = &at91sam9261_ssc1_device;
840 configure_ssc1_pins(pins);
841 break;
842 case AT91SAM9261_ID_SSC2:
843 pdev = &at91sam9261_ssc2_device;
844 configure_ssc2_pins(pins);
845 break;
846 default:
847 return;
848 }
849
850 platform_device_register(pdev);
851 }
852
853 #else
854 void __init at91_add_device_ssc(unsigned id, unsigned pins) {}
855 #endif
856
857
858 /* --------------------------------------------------------------------
859 * UART
860 * -------------------------------------------------------------------- */
861
862 #if defined(CONFIG_SERIAL_ATMEL)
863 static struct resource dbgu_resources[] = {
864 [0] = {
865 .start = AT91SAM9261_BASE_DBGU,
866 .end = AT91SAM9261_BASE_DBGU + SZ_512 - 1,
867 .flags = IORESOURCE_MEM,
868 },
869 [1] = {
870 .start = NR_IRQS_LEGACY + AT91_ID_SYS,
871 .end = NR_IRQS_LEGACY + AT91_ID_SYS,
872 .flags = IORESOURCE_IRQ,
873 },
874 };
875
876 static struct atmel_uart_data dbgu_data = {
877 .use_dma_tx = 0,
878 .use_dma_rx = 0, /* DBGU not capable of receive DMA */
879 };
880
881 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
882
883 static struct platform_device at91sam9261_dbgu_device = {
884 .name = "atmel_usart",
885 .id = 0,
886 .dev = {
887 .dma_mask = &dbgu_dmamask,
888 .coherent_dma_mask = DMA_BIT_MASK(32),
889 .platform_data = &dbgu_data,
890 },
891 .resource = dbgu_resources,
892 .num_resources = ARRAY_SIZE(dbgu_resources),
893 };
894
895 static inline void configure_dbgu_pins(void)
896 {
897 at91_set_A_periph(AT91_PIN_PA9, 0); /* DRXD */
898 at91_set_A_periph(AT91_PIN_PA10, 1); /* DTXD */
899 }
900
901 static struct resource uart0_resources[] = {
902 [0] = {
903 .start = AT91SAM9261_BASE_US0,
904 .end = AT91SAM9261_BASE_US0 + SZ_16K - 1,
905 .flags = IORESOURCE_MEM,
906 },
907 [1] = {
908 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_US0,
909 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_US0,
910 .flags = IORESOURCE_IRQ,
911 },
912 };
913
914 static struct atmel_uart_data uart0_data = {
915 .use_dma_tx = 1,
916 .use_dma_rx = 1,
917 };
918
919 static u64 uart0_dmamask = DMA_BIT_MASK(32);
920
921 static struct platform_device at91sam9261_uart0_device = {
922 .name = "atmel_usart",
923 .id = 1,
924 .dev = {
925 .dma_mask = &uart0_dmamask,
926 .coherent_dma_mask = DMA_BIT_MASK(32),
927 .platform_data = &uart0_data,
928 },
929 .resource = uart0_resources,
930 .num_resources = ARRAY_SIZE(uart0_resources),
931 };
932
933 static inline void configure_usart0_pins(unsigned pins)
934 {
935 at91_set_A_periph(AT91_PIN_PC8, 1); /* TXD0 */
936 at91_set_A_periph(AT91_PIN_PC9, 0); /* RXD0 */
937
938 if (pins & ATMEL_UART_RTS)
939 at91_set_A_periph(AT91_PIN_PC10, 0); /* RTS0 */
940 if (pins & ATMEL_UART_CTS)
941 at91_set_A_periph(AT91_PIN_PC11, 0); /* CTS0 */
942 }
943
944 static struct resource uart1_resources[] = {
945 [0] = {
946 .start = AT91SAM9261_BASE_US1,
947 .end = AT91SAM9261_BASE_US1 + SZ_16K - 1,
948 .flags = IORESOURCE_MEM,
949 },
950 [1] = {
951 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_US1,
952 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_US1,
953 .flags = IORESOURCE_IRQ,
954 },
955 };
956
957 static struct atmel_uart_data uart1_data = {
958 .use_dma_tx = 1,
959 .use_dma_rx = 1,
960 };
961
962 static u64 uart1_dmamask = DMA_BIT_MASK(32);
963
964 static struct platform_device at91sam9261_uart1_device = {
965 .name = "atmel_usart",
966 .id = 2,
967 .dev = {
968 .dma_mask = &uart1_dmamask,
969 .coherent_dma_mask = DMA_BIT_MASK(32),
970 .platform_data = &uart1_data,
971 },
972 .resource = uart1_resources,
973 .num_resources = ARRAY_SIZE(uart1_resources),
974 };
975
976 static inline void configure_usart1_pins(unsigned pins)
977 {
978 at91_set_A_periph(AT91_PIN_PC12, 1); /* TXD1 */
979 at91_set_A_periph(AT91_PIN_PC13, 0); /* RXD1 */
980
981 if (pins & ATMEL_UART_RTS)
982 at91_set_B_periph(AT91_PIN_PA12, 0); /* RTS1 */
983 if (pins & ATMEL_UART_CTS)
984 at91_set_B_periph(AT91_PIN_PA13, 0); /* CTS1 */
985 }
986
987 static struct resource uart2_resources[] = {
988 [0] = {
989 .start = AT91SAM9261_BASE_US2,
990 .end = AT91SAM9261_BASE_US2 + SZ_16K - 1,
991 .flags = IORESOURCE_MEM,
992 },
993 [1] = {
994 .start = NR_IRQS_LEGACY + AT91SAM9261_ID_US2,
995 .end = NR_IRQS_LEGACY + AT91SAM9261_ID_US2,
996 .flags = IORESOURCE_IRQ,
997 },
998 };
999
1000 static struct atmel_uart_data uart2_data = {
1001 .use_dma_tx = 1,
1002 .use_dma_rx = 1,
1003 };
1004
1005 static u64 uart2_dmamask = DMA_BIT_MASK(32);
1006
1007 static struct platform_device at91sam9261_uart2_device = {
1008 .name = "atmel_usart",
1009 .id = 3,
1010 .dev = {
1011 .dma_mask = &uart2_dmamask,
1012 .coherent_dma_mask = DMA_BIT_MASK(32),
1013 .platform_data = &uart2_data,
1014 },
1015 .resource = uart2_resources,
1016 .num_resources = ARRAY_SIZE(uart2_resources),
1017 };
1018
1019 static inline void configure_usart2_pins(unsigned pins)
1020 {
1021 at91_set_A_periph(AT91_PIN_PC15, 0); /* RXD2 */
1022 at91_set_A_periph(AT91_PIN_PC14, 1); /* TXD2 */
1023
1024 if (pins & ATMEL_UART_RTS)
1025 at91_set_B_periph(AT91_PIN_PA15, 0); /* RTS2*/
1026 if (pins & ATMEL_UART_CTS)
1027 at91_set_B_periph(AT91_PIN_PA16, 0); /* CTS2 */
1028 }
1029
1030 static struct platform_device *__initdata at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
1031
1032 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
1033 {
1034 struct platform_device *pdev;
1035 struct atmel_uart_data *pdata;
1036
1037 switch (id) {
1038 case 0: /* DBGU */
1039 pdev = &at91sam9261_dbgu_device;
1040 configure_dbgu_pins();
1041 break;
1042 case AT91SAM9261_ID_US0:
1043 pdev = &at91sam9261_uart0_device;
1044 configure_usart0_pins(pins);
1045 break;
1046 case AT91SAM9261_ID_US1:
1047 pdev = &at91sam9261_uart1_device;
1048 configure_usart1_pins(pins);
1049 break;
1050 case AT91SAM9261_ID_US2:
1051 pdev = &at91sam9261_uart2_device;
1052 configure_usart2_pins(pins);
1053 break;
1054 default:
1055 return;
1056 }
1057 pdata = pdev->dev.platform_data;
1058 pdata->num = portnr; /* update to mapped ID */
1059
1060 if (portnr < ATMEL_MAX_UART)
1061 at91_uarts[portnr] = pdev;
1062 }
1063
1064 void __init at91_add_device_serial(void)
1065 {
1066 int i;
1067
1068 for (i = 0; i < ATMEL_MAX_UART; i++) {
1069 if (at91_uarts[i])
1070 platform_device_register(at91_uarts[i]);
1071 }
1072 }
1073 #else
1074 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
1075 void __init at91_add_device_serial(void) {}
1076 #endif
1077
1078
1079 /* -------------------------------------------------------------------- */
1080
1081 /*
1082 * These devices are always present and don't need any board-specific
1083 * setup.
1084 */
1085 static int __init at91_add_standard_devices(void)
1086 {
1087 at91_add_device_rtt();
1088 at91_add_device_watchdog();
1089 at91_add_device_tc();
1090 return 0;
1091 }
1092
1093 arch_initcall(at91_add_standard_devices);
kernel source for telekom puls (alcatel/mediatek)