projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
[MTD] [NAND] rename at91_nand -> atmel_nand: internal symbols
[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/platform_device.h>
17 #include <linux/i2c-gpio.h>
18
19 #include <asm/arch/board.h>
20 #include <asm/arch/gpio.h>
21 #include <asm/arch/at91sam9260.h>
22 #include <asm/arch/at91sam9260_matrix.h>
23 #include <asm/arch/at91sam9_smc.h>
24
25 #include "generic.h"
26
27
28 /* --------------------------------------------------------------------
29 * USB Host
30 * -------------------------------------------------------------------- */
31
32 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
33 static u64 ohci_dmamask = DMA_BIT_MASK(32);
34 static struct at91_usbh_data usbh_data;
35
36 static struct resource usbh_resources[] = {
37 [0] = {
38 .start = AT91SAM9260_UHP_BASE,
39 .end = AT91SAM9260_UHP_BASE + SZ_1M - 1,
40 .flags = IORESOURCE_MEM,
41 },
42 [1] = {
43 .start = AT91SAM9260_ID_UHP,
44 .end = AT91SAM9260_ID_UHP,
45 .flags = IORESOURCE_IRQ,
46 },
47 };
48
49 static struct platform_device at91_usbh_device = {
50 .name = "at91_ohci",
51 .id = -1,
52 .dev = {
53 .dma_mask = &ohci_dmamask,
54 .coherent_dma_mask = DMA_BIT_MASK(32),
55 .platform_data = &usbh_data,
56 },
57 .resource = usbh_resources,
58 .num_resources = ARRAY_SIZE(usbh_resources),
59 };
60
61 void __init at91_add_device_usbh(struct at91_usbh_data *data)
62 {
63 if (!data)
64 return;
65
66 usbh_data = *data;
67 platform_device_register(&at91_usbh_device);
68 }
69 #else
70 void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
71 #endif
72
73
74 /* --------------------------------------------------------------------
75 * USB Device (Gadget)
76 * -------------------------------------------------------------------- */
77
78 #ifdef CONFIG_USB_GADGET_AT91
79 static struct at91_udc_data udc_data;
80
81 static struct resource udc_resources[] = {
82 [0] = {
83 .start = AT91SAM9260_BASE_UDP,
84 .end = AT91SAM9260_BASE_UDP + SZ_16K - 1,
85 .flags = IORESOURCE_MEM,
86 },
87 [1] = {
88 .start = AT91SAM9260_ID_UDP,
89 .end = AT91SAM9260_ID_UDP,
90 .flags = IORESOURCE_IRQ,
91 },
92 };
93
94 static struct platform_device at91_udc_device = {
95 .name = "at91_udc",
96 .id = -1,
97 .dev = {
98 .platform_data = &udc_data,
99 },
100 .resource = udc_resources,
101 .num_resources = ARRAY_SIZE(udc_resources),
102 };
103
104 void __init at91_add_device_udc(struct at91_udc_data *data)
105 {
106 if (!data)
107 return;
108
109 if (data->vbus_pin) {
110 at91_set_gpio_input(data->vbus_pin, 0);
111 at91_set_deglitch(data->vbus_pin, 1);
112 }
113
114 /* Pullup pin is handled internally by USB device peripheral */
115
116 udc_data = *data;
117 platform_device_register(&at91_udc_device);
118 }
119 #else
120 void __init at91_add_device_udc(struct at91_udc_data *data) {}
121 #endif
122
123
124 /* --------------------------------------------------------------------
125 * Ethernet
126 * -------------------------------------------------------------------- */
127
128 #if defined(CONFIG_MACB) || defined(CONFIG_MACB_MODULE)
129 static u64 eth_dmamask = DMA_BIT_MASK(32);
130 static struct at91_eth_data eth_data;
131
132 static struct resource eth_resources[] = {
133 [0] = {
134 .start = AT91SAM9260_BASE_EMAC,
135 .end = AT91SAM9260_BASE_EMAC + SZ_16K - 1,
136 .flags = IORESOURCE_MEM,
137 },
138 [1] = {
139 .start = AT91SAM9260_ID_EMAC,
140 .end = AT91SAM9260_ID_EMAC,
141 .flags = IORESOURCE_IRQ,
142 },
143 };
144
145 static struct platform_device at91sam9260_eth_device = {
146 .name = "macb",
147 .id = -1,
148 .dev = {
149 .dma_mask = &eth_dmamask,
150 .coherent_dma_mask = DMA_BIT_MASK(32),
151 .platform_data = &eth_data,
152 },
153 .resource = eth_resources,
154 .num_resources = ARRAY_SIZE(eth_resources),
155 };
156
157 void __init at91_add_device_eth(struct at91_eth_data *data)
158 {
159 if (!data)
160 return;
161
162 if (data->phy_irq_pin) {
163 at91_set_gpio_input(data->phy_irq_pin, 0);
164 at91_set_deglitch(data->phy_irq_pin, 1);
165 }
166
167 /* Pins used for MII and RMII */
168 at91_set_A_periph(AT91_PIN_PA19, 0); /* ETXCK_EREFCK */
169 at91_set_A_periph(AT91_PIN_PA17, 0); /* ERXDV */
170 at91_set_A_periph(AT91_PIN_PA14, 0); /* ERX0 */
171 at91_set_A_periph(AT91_PIN_PA15, 0); /* ERX1 */
172 at91_set_A_periph(AT91_PIN_PA18, 0); /* ERXER */
173 at91_set_A_periph(AT91_PIN_PA16, 0); /* ETXEN */
174 at91_set_A_periph(AT91_PIN_PA12, 0); /* ETX0 */
175 at91_set_A_periph(AT91_PIN_PA13, 0); /* ETX1 */
176 at91_set_A_periph(AT91_PIN_PA21, 0); /* EMDIO */
177 at91_set_A_periph(AT91_PIN_PA20, 0); /* EMDC */
178
179 if (!data->is_rmii) {
180 at91_set_B_periph(AT91_PIN_PA28, 0); /* ECRS */
181 at91_set_B_periph(AT91_PIN_PA29, 0); /* ECOL */
182 at91_set_B_periph(AT91_PIN_PA25, 0); /* ERX2 */
183 at91_set_B_periph(AT91_PIN_PA26, 0); /* ERX3 */
184 at91_set_B_periph(AT91_PIN_PA27, 0); /* ERXCK */
185 at91_set_B_periph(AT91_PIN_PA23, 0); /* ETX2 */
186 at91_set_B_periph(AT91_PIN_PA24, 0); /* ETX3 */
187 at91_set_B_periph(AT91_PIN_PA22, 0); /* ETXER */
188 }
189
190 eth_data = *data;
191 platform_device_register(&at91sam9260_eth_device);
192 }
193 #else
194 void __init at91_add_device_eth(struct at91_eth_data *data) {}
195 #endif
196
197
198 /* --------------------------------------------------------------------
199 * MMC / SD
200 * -------------------------------------------------------------------- */
201
202 #if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
203 static u64 mmc_dmamask = DMA_BIT_MASK(32);
204 static struct at91_mmc_data mmc_data;
205
206 static struct resource mmc_resources[] = {
207 [0] = {
208 .start = AT91SAM9260_BASE_MCI,
209 .end = AT91SAM9260_BASE_MCI + SZ_16K - 1,
210 .flags = IORESOURCE_MEM,
211 },
212 [1] = {
213 .start = AT91SAM9260_ID_MCI,
214 .end = AT91SAM9260_ID_MCI,
215 .flags = IORESOURCE_IRQ,
216 },
217 };
218
219 static struct platform_device at91sam9260_mmc_device = {
220 .name = "at91_mci",
221 .id = -1,
222 .dev = {
223 .dma_mask = &mmc_dmamask,
224 .coherent_dma_mask = DMA_BIT_MASK(32),
225 .platform_data = &mmc_data,
226 },
227 .resource = mmc_resources,
228 .num_resources = ARRAY_SIZE(mmc_resources),
229 };
230
231 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
232 {
233 if (!data)
234 return;
235
236 /* input/irq */
237 if (data->det_pin) {
238 at91_set_gpio_input(data->det_pin, 1);
239 at91_set_deglitch(data->det_pin, 1);
240 }
241 if (data->wp_pin)
242 at91_set_gpio_input(data->wp_pin, 1);
243 if (data->vcc_pin)
244 at91_set_gpio_output(data->vcc_pin, 0);
245
246 /* CLK */
247 at91_set_A_periph(AT91_PIN_PA8, 0);
248
249 if (data->slot_b) {
250 /* CMD */
251 at91_set_B_periph(AT91_PIN_PA1, 1);
252
253 /* DAT0, maybe DAT1..DAT3 */
254 at91_set_B_periph(AT91_PIN_PA0, 1);
255 if (data->wire4) {
256 at91_set_B_periph(AT91_PIN_PA5, 1);
257 at91_set_B_periph(AT91_PIN_PA4, 1);
258 at91_set_B_periph(AT91_PIN_PA3, 1);
259 }
260 } else {
261 /* CMD */
262 at91_set_A_periph(AT91_PIN_PA7, 1);
263
264 /* DAT0, maybe DAT1..DAT3 */
265 at91_set_A_periph(AT91_PIN_PA6, 1);
266 if (data->wire4) {
267 at91_set_A_periph(AT91_PIN_PA9, 1);
268 at91_set_A_periph(AT91_PIN_PA10, 1);
269 at91_set_A_periph(AT91_PIN_PA11, 1);
270 }
271 }
272
273 mmc_data = *data;
274 platform_device_register(&at91sam9260_mmc_device);
275 }
276 #else
277 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
278 #endif
279
280
281 /* --------------------------------------------------------------------
282 * NAND / SmartMedia
283 * -------------------------------------------------------------------- */
284
285 #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
286 static struct atmel_nand_data nand_data;
287
288 #define NAND_BASE AT91_CHIPSELECT_3
289
290 static struct resource nand_resources[] = {
291 [0] = {
292 .start = NAND_BASE,
293 .end = NAND_BASE + SZ_256M - 1,
294 .flags = IORESOURCE_MEM,
295 },
296 [1] = {
297 .start = AT91_BASE_SYS + AT91_ECC,
298 .end = AT91_BASE_SYS + AT91_ECC + SZ_512 - 1,
299 .flags = IORESOURCE_MEM,
300 }
301 };
302
303 static struct platform_device at91sam9260_nand_device = {
304 .name = "atmel_nand",
305 .id = -1,
306 .dev = {
307 .platform_data = &nand_data,
308 },
309 .resource = nand_resources,
310 .num_resources = ARRAY_SIZE(nand_resources),
311 };
312
313 void __init at91_add_device_nand(struct atmel_nand_data *data)
314 {
315 unsigned long csa, mode;
316
317 if (!data)
318 return;
319
320 csa = at91_sys_read(AT91_MATRIX_EBICSA);
321 at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
322
323 /* set the bus interface characteristics */
324 at91_sys_write(AT91_SMC_SETUP(3), AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0)
325 | AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
326
327 at91_sys_write(AT91_SMC_PULSE(3), AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3)
328 | AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3));
329
330 at91_sys_write(AT91_SMC_CYCLE(3), AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5));
331
332 if (data->bus_width_16)
333 mode = AT91_SMC_DBW_16;
334 else
335 mode = AT91_SMC_DBW_8;
336 at91_sys_write(AT91_SMC_MODE(3), mode | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(2));
337
338 /* enable pin */
339 if (data->enable_pin)
340 at91_set_gpio_output(data->enable_pin, 1);
341
342 /* ready/busy pin */
343 if (data->rdy_pin)
344 at91_set_gpio_input(data->rdy_pin, 1);
345
346 /* card detect pin */
347 if (data->det_pin)
348 at91_set_gpio_input(data->det_pin, 1);
349
350 nand_data = *data;
351 platform_device_register(&at91sam9260_nand_device);
352 }
353 #else
354 void __init at91_add_device_nand(struct atmel_nand_data *data) {}
355 #endif
356
357
358 /* --------------------------------------------------------------------
359 * TWI (i2c)
360 * -------------------------------------------------------------------- */
361
362 /*
363 * Prefer the GPIO code since the TWI controller isn't robust
364 * (gets overruns and underruns under load) and can only issue
365 * repeated STARTs in one scenario (the driver doesn't yet handle them).
366 */
367
368 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
369
370 static struct i2c_gpio_platform_data pdata = {
371 .sda_pin = AT91_PIN_PA23,
372 .sda_is_open_drain = 1,
373 .scl_pin = AT91_PIN_PA24,
374 .scl_is_open_drain = 1,
375 .udelay = 2, /* ~100 kHz */
376 };
377
378 static struct platform_device at91sam9260_twi_device = {
379 .name = "i2c-gpio",
380 .id = -1,
381 .dev.platform_data = &pdata,
382 };
383
384 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
385 {
386 at91_set_GPIO_periph(AT91_PIN_PA23, 1); /* TWD (SDA) */
387 at91_set_multi_drive(AT91_PIN_PA23, 1);
388
389 at91_set_GPIO_periph(AT91_PIN_PA24, 1); /* TWCK (SCL) */
390 at91_set_multi_drive(AT91_PIN_PA24, 1);
391
392 i2c_register_board_info(0, devices, nr_devices);
393 platform_device_register(&at91sam9260_twi_device);
394 }
395
396 #elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
397
398 static struct resource twi_resources[] = {
399 [0] = {
400 .start = AT91SAM9260_BASE_TWI,
401 .end = AT91SAM9260_BASE_TWI + SZ_16K - 1,
402 .flags = IORESOURCE_MEM,
403 },
404 [1] = {
405 .start = AT91SAM9260_ID_TWI,
406 .end = AT91SAM9260_ID_TWI,
407 .flags = IORESOURCE_IRQ,
408 },
409 };
410
411 static struct platform_device at91sam9260_twi_device = {
412 .name = "at91_i2c",
413 .id = -1,
414 .resource = twi_resources,
415 .num_resources = ARRAY_SIZE(twi_resources),
416 };
417
418 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
419 {
420 /* pins used for TWI interface */
421 at91_set_A_periph(AT91_PIN_PA23, 0); /* TWD */
422 at91_set_multi_drive(AT91_PIN_PA23, 1);
423
424 at91_set_A_periph(AT91_PIN_PA24, 0); /* TWCK */
425 at91_set_multi_drive(AT91_PIN_PA24, 1);
426
427 i2c_register_board_info(0, devices, nr_devices);
428 platform_device_register(&at91sam9260_twi_device);
429 }
430 #else
431 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
432 #endif
433
434
435 /* --------------------------------------------------------------------
436 * SPI
437 * -------------------------------------------------------------------- */
438
439 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
440 static u64 spi_dmamask = DMA_BIT_MASK(32);
441
442 static struct resource spi0_resources[] = {
443 [0] = {
444 .start = AT91SAM9260_BASE_SPI0,
445 .end = AT91SAM9260_BASE_SPI0 + SZ_16K - 1,
446 .flags = IORESOURCE_MEM,
447 },
448 [1] = {
449 .start = AT91SAM9260_ID_SPI0,
450 .end = AT91SAM9260_ID_SPI0,
451 .flags = IORESOURCE_IRQ,
452 },
453 };
454
455 static struct platform_device at91sam9260_spi0_device = {
456 .name = "atmel_spi",
457 .id = 0,
458 .dev = {
459 .dma_mask = &spi_dmamask,
460 .coherent_dma_mask = DMA_BIT_MASK(32),
461 },
462 .resource = spi0_resources,
463 .num_resources = ARRAY_SIZE(spi0_resources),
464 };
465
466 static const unsigned spi0_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PC11, AT91_PIN_PC16, AT91_PIN_PC17 };
467
468 static struct resource spi1_resources[] = {
469 [0] = {
470 .start = AT91SAM9260_BASE_SPI1,
471 .end = AT91SAM9260_BASE_SPI1 + SZ_16K - 1,
472 .flags = IORESOURCE_MEM,
473 },
474 [1] = {
475 .start = AT91SAM9260_ID_SPI1,
476 .end = AT91SAM9260_ID_SPI1,
477 .flags = IORESOURCE_IRQ,
478 },
479 };
480
481 static struct platform_device at91sam9260_spi1_device = {
482 .name = "atmel_spi",
483 .id = 1,
484 .dev = {
485 .dma_mask = &spi_dmamask,
486 .coherent_dma_mask = DMA_BIT_MASK(32),
487 },
488 .resource = spi1_resources,
489 .num_resources = ARRAY_SIZE(spi1_resources),
490 };
491
492 static const unsigned spi1_standard_cs[4] = { AT91_PIN_PB3, AT91_PIN_PC5, AT91_PIN_PC4, AT91_PIN_PC3 };
493
494 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
495 {
496 int i;
497 unsigned long cs_pin;
498 short enable_spi0 = 0;
499 short enable_spi1 = 0;
500
501 /* Choose SPI chip-selects */
502 for (i = 0; i < nr_devices; i++) {
503 if (devices[i].controller_data)
504 cs_pin = (unsigned long) devices[i].controller_data;
505 else if (devices[i].bus_num == 0)
506 cs_pin = spi0_standard_cs[devices[i].chip_select];
507 else
508 cs_pin = spi1_standard_cs[devices[i].chip_select];
509
510 if (devices[i].bus_num == 0)
511 enable_spi0 = 1;
512 else
513 enable_spi1 = 1;
514
515 /* enable chip-select pin */
516 at91_set_gpio_output(cs_pin, 1);
517
518 /* pass chip-select pin to driver */
519 devices[i].controller_data = (void *) cs_pin;
520 }
521
522 spi_register_board_info(devices, nr_devices);
523
524 /* Configure SPI bus(es) */
525 if (enable_spi0) {
526 at91_set_A_periph(AT91_PIN_PA0, 0); /* SPI0_MISO */
527 at91_set_A_periph(AT91_PIN_PA1, 0); /* SPI0_MOSI */
528 at91_set_A_periph(AT91_PIN_PA2, 0); /* SPI1_SPCK */
529
530 at91_clock_associate("spi0_clk", &at91sam9260_spi0_device.dev, "spi_clk");
531 platform_device_register(&at91sam9260_spi0_device);
532 }
533 if (enable_spi1) {
534 at91_set_A_periph(AT91_PIN_PB0, 0); /* SPI1_MISO */
535 at91_set_A_periph(AT91_PIN_PB1, 0); /* SPI1_MOSI */
536 at91_set_A_periph(AT91_PIN_PB2, 0); /* SPI1_SPCK */
537
538 at91_clock_associate("spi1_clk", &at91sam9260_spi1_device.dev, "spi_clk");
539 platform_device_register(&at91sam9260_spi1_device);
540 }
541 }
542 #else
543 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
544 #endif
545
546
547 /* --------------------------------------------------------------------
548 * Timer/Counter blocks
549 * -------------------------------------------------------------------- */
550
551 #ifdef CONFIG_ATMEL_TCLIB
552
553 static struct resource tcb0_resources[] = {
554 [0] = {
555 .start = AT91SAM9260_BASE_TCB0,
556 .end = AT91SAM9260_BASE_TCB0 + SZ_16K - 1,
557 .flags = IORESOURCE_MEM,
558 },
559 [1] = {
560 .start = AT91SAM9260_ID_TC0,
561 .end = AT91SAM9260_ID_TC0,
562 .flags = IORESOURCE_IRQ,
563 },
564 [2] = {
565 .start = AT91SAM9260_ID_TC1,
566 .end = AT91SAM9260_ID_TC1,
567 .flags = IORESOURCE_IRQ,
568 },
569 [3] = {
570 .start = AT91SAM9260_ID_TC2,
571 .end = AT91SAM9260_ID_TC2,
572 .flags = IORESOURCE_IRQ,
573 },
574 };
575
576 static struct platform_device at91sam9260_tcb0_device = {
577 .name = "atmel_tcb",
578 .id = 0,
579 .resource = tcb0_resources,
580 .num_resources = ARRAY_SIZE(tcb0_resources),
581 };
582
583 static struct resource tcb1_resources[] = {
584 [0] = {
585 .start = AT91SAM9260_BASE_TCB1,
586 .end = AT91SAM9260_BASE_TCB1 + SZ_16K - 1,
587 .flags = IORESOURCE_MEM,
588 },
589 [1] = {
590 .start = AT91SAM9260_ID_TC3,
591 .end = AT91SAM9260_ID_TC3,
592 .flags = IORESOURCE_IRQ,
593 },
594 [2] = {
595 .start = AT91SAM9260_ID_TC4,
596 .end = AT91SAM9260_ID_TC4,
597 .flags = IORESOURCE_IRQ,
598 },
599 [3] = {
600 .start = AT91SAM9260_ID_TC5,
601 .end = AT91SAM9260_ID_TC5,
602 .flags = IORESOURCE_IRQ,
603 },
604 };
605
606 static struct platform_device at91sam9260_tcb1_device = {
607 .name = "atmel_tcb",
608 .id = 1,
609 .resource = tcb1_resources,
610 .num_resources = ARRAY_SIZE(tcb1_resources),
611 };
612
613 static void __init at91_add_device_tc(void)
614 {
615 /* this chip has a separate clock and irq for each TC channel */
616 at91_clock_associate("tc0_clk", &at91sam9260_tcb0_device.dev, "t0_clk");
617 at91_clock_associate("tc1_clk", &at91sam9260_tcb0_device.dev, "t1_clk");
618 at91_clock_associate("tc2_clk", &at91sam9260_tcb0_device.dev, "t2_clk");
619 platform_device_register(&at91sam9260_tcb0_device);
620
621 at91_clock_associate("tc3_clk", &at91sam9260_tcb1_device.dev, "t0_clk");
622 at91_clock_associate("tc4_clk", &at91sam9260_tcb1_device.dev, "t1_clk");
623 at91_clock_associate("tc5_clk", &at91sam9260_tcb1_device.dev, "t2_clk");
624 platform_device_register(&at91sam9260_tcb1_device);
625 }
626 #else
627 static void __init at91_add_device_tc(void) { }
628 #endif
629
630
631 /* --------------------------------------------------------------------
632 * RTT
633 * -------------------------------------------------------------------- */
634
635 static struct resource rtt_resources[] = {
636 {
637 .start = AT91_BASE_SYS + AT91_RTT,
638 .end = AT91_BASE_SYS + AT91_RTT + SZ_16 - 1,
639 .flags = IORESOURCE_MEM,
640 }
641 };
642
643 static struct platform_device at91sam9260_rtt_device = {
644 .name = "at91_rtt",
645 .id = 0,
646 .resource = rtt_resources,
647 .num_resources = ARRAY_SIZE(rtt_resources),
648 };
649
650 static void __init at91_add_device_rtt(void)
651 {
652 platform_device_register(&at91sam9260_rtt_device);
653 }
654
655
656 /* --------------------------------------------------------------------
657 * Watchdog
658 * -------------------------------------------------------------------- */
659
660 #if defined(CONFIG_AT91SAM9_WATCHDOG) || defined(CONFIG_AT91SAM9_WATCHDOG_MODULE)
661 static struct platform_device at91sam9260_wdt_device = {
662 .name = "at91_wdt",
663 .id = -1,
664 .num_resources = 0,
665 };
666
667 static void __init at91_add_device_watchdog(void)
668 {
669 platform_device_register(&at91sam9260_wdt_device);
670 }
671 #else
672 static void __init at91_add_device_watchdog(void) {}
673 #endif
674
675
676 /* --------------------------------------------------------------------
677 * SSC -- Synchronous Serial Controller
678 * -------------------------------------------------------------------- */
679
680 #if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE)
681 static u64 ssc_dmamask = DMA_BIT_MASK(32);
682
683 static struct resource ssc_resources[] = {
684 [0] = {
685 .start = AT91SAM9260_BASE_SSC,
686 .end = AT91SAM9260_BASE_SSC + SZ_16K - 1,
687 .flags = IORESOURCE_MEM,
688 },
689 [1] = {
690 .start = AT91SAM9260_ID_SSC,
691 .end = AT91SAM9260_ID_SSC,
692 .flags = IORESOURCE_IRQ,
693 },
694 };
695
696 static struct platform_device at91sam9260_ssc_device = {
697 .name = "ssc",
698 .id = 0,
699 .dev = {
700 .dma_mask = &ssc_dmamask,
701 .coherent_dma_mask = DMA_BIT_MASK(32),
702 },
703 .resource = ssc_resources,
704 .num_resources = ARRAY_SIZE(ssc_resources),
705 };
706
707 static inline void configure_ssc_pins(unsigned pins)
708 {
709 if (pins & ATMEL_SSC_TF)
710 at91_set_A_periph(AT91_PIN_PB17, 1);
711 if (pins & ATMEL_SSC_TK)
712 at91_set_A_periph(AT91_PIN_PB16, 1);
713 if (pins & ATMEL_SSC_TD)
714 at91_set_A_periph(AT91_PIN_PB18, 1);
715 if (pins & ATMEL_SSC_RD)
716 at91_set_A_periph(AT91_PIN_PB19, 1);
717 if (pins & ATMEL_SSC_RK)
718 at91_set_A_periph(AT91_PIN_PB20, 1);
719 if (pins & ATMEL_SSC_RF)
720 at91_set_A_periph(AT91_PIN_PB21, 1);
721 }
722
723 /*
724 * SSC controllers are accessed through library code, instead of any
725 * kind of all-singing/all-dancing driver. For example one could be
726 * used by a particular I2S audio codec's driver, while another one
727 * on the same system might be used by a custom data capture driver.
728 */
729 void __init at91_add_device_ssc(unsigned id, unsigned pins)
730 {
731 struct platform_device *pdev;
732
733 /*
734 * NOTE: caller is responsible for passing information matching
735 * "pins" to whatever will be using each particular controller.
736 */
737 switch (id) {
738 case AT91SAM9260_ID_SSC:
739 pdev = &at91sam9260_ssc_device;
740 configure_ssc_pins(pins);
741 at91_clock_associate("ssc_clk", &pdev->dev, "pclk");
742 break;
743 default:
744 return;
745 }
746
747 platform_device_register(pdev);
748 }
749
750 #else
751 void __init at91_add_device_ssc(unsigned id, unsigned pins) {}
752 #endif
753
754
755 /* --------------------------------------------------------------------
756 * UART
757 * -------------------------------------------------------------------- */
758 #if defined(CONFIG_SERIAL_ATMEL)
759 static struct resource dbgu_resources[] = {
760 [0] = {
761 .start = AT91_VA_BASE_SYS + AT91_DBGU,
762 .end = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
763 .flags = IORESOURCE_MEM,
764 },
765 [1] = {
766 .start = AT91_ID_SYS,
767 .end = AT91_ID_SYS,
768 .flags = IORESOURCE_IRQ,
769 },
770 };
771
772 static struct atmel_uart_data dbgu_data = {
773 .use_dma_tx = 0,
774 .use_dma_rx = 0, /* DBGU not capable of receive DMA */
775 .regs = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
776 };
777
778 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
779
780 static struct platform_device at91sam9260_dbgu_device = {
781 .name = "atmel_usart",
782 .id = 0,
783 .dev = {
784 .dma_mask = &dbgu_dmamask,
785 .coherent_dma_mask = DMA_BIT_MASK(32),
786 .platform_data = &dbgu_data,
787 },
788 .resource = dbgu_resources,
789 .num_resources = ARRAY_SIZE(dbgu_resources),
790 };
791
792 static inline void configure_dbgu_pins(void)
793 {
794 at91_set_A_periph(AT91_PIN_PB14, 0); /* DRXD */
795 at91_set_A_periph(AT91_PIN_PB15, 1); /* DTXD */
796 }
797
798 static struct resource uart0_resources[] = {
799 [0] = {
800 .start = AT91SAM9260_BASE_US0,
801 .end = AT91SAM9260_BASE_US0 + SZ_16K - 1,
802 .flags = IORESOURCE_MEM,
803 },
804 [1] = {
805 .start = AT91SAM9260_ID_US0,
806 .end = AT91SAM9260_ID_US0,
807 .flags = IORESOURCE_IRQ,
808 },
809 };
810
811 static struct atmel_uart_data uart0_data = {
812 .use_dma_tx = 1,
813 .use_dma_rx = 1,
814 };
815
816 static u64 uart0_dmamask = DMA_BIT_MASK(32);
817
818 static struct platform_device at91sam9260_uart0_device = {
819 .name = "atmel_usart",
820 .id = 1,
821 .dev = {
822 .dma_mask = &uart0_dmamask,
823 .coherent_dma_mask = DMA_BIT_MASK(32),
824 .platform_data = &uart0_data,
825 },
826 .resource = uart0_resources,
827 .num_resources = ARRAY_SIZE(uart0_resources),
828 };
829
830 static inline void configure_usart0_pins(unsigned pins)
831 {
832 at91_set_A_periph(AT91_PIN_PB4, 1); /* TXD0 */
833 at91_set_A_periph(AT91_PIN_PB5, 0); /* RXD0 */
834
835 if (pins & ATMEL_UART_RTS)
836 at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS0 */
837 if (pins & ATMEL_UART_CTS)
838 at91_set_A_periph(AT91_PIN_PB27, 0); /* CTS0 */
839 if (pins & ATMEL_UART_DTR)
840 at91_set_A_periph(AT91_PIN_PB24, 0); /* DTR0 */
841 if (pins & ATMEL_UART_DSR)
842 at91_set_A_periph(AT91_PIN_PB22, 0); /* DSR0 */
843 if (pins & ATMEL_UART_DCD)
844 at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD0 */
845 if (pins & ATMEL_UART_RI)
846 at91_set_A_periph(AT91_PIN_PB25, 0); /* RI0 */
847 }
848
849 static struct resource uart1_resources[] = {
850 [0] = {
851 .start = AT91SAM9260_BASE_US1,
852 .end = AT91SAM9260_BASE_US1 + SZ_16K - 1,
853 .flags = IORESOURCE_MEM,
854 },
855 [1] = {
856 .start = AT91SAM9260_ID_US1,
857 .end = AT91SAM9260_ID_US1,
858 .flags = IORESOURCE_IRQ,
859 },
860 };
861
862 static struct atmel_uart_data uart1_data = {
863 .use_dma_tx = 1,
864 .use_dma_rx = 1,
865 };
866
867 static u64 uart1_dmamask = DMA_BIT_MASK(32);
868
869 static struct platform_device at91sam9260_uart1_device = {
870 .name = "atmel_usart",
871 .id = 2,
872 .dev = {
873 .dma_mask = &uart1_dmamask,
874 .coherent_dma_mask = DMA_BIT_MASK(32),
875 .platform_data = &uart1_data,
876 },
877 .resource = uart1_resources,
878 .num_resources = ARRAY_SIZE(uart1_resources),
879 };
880
881 static inline void configure_usart1_pins(unsigned pins)
882 {
883 at91_set_A_periph(AT91_PIN_PB6, 1); /* TXD1 */
884 at91_set_A_periph(AT91_PIN_PB7, 0); /* RXD1 */
885
886 if (pins & ATMEL_UART_RTS)
887 at91_set_A_periph(AT91_PIN_PB28, 0); /* RTS1 */
888 if (pins & ATMEL_UART_CTS)
889 at91_set_A_periph(AT91_PIN_PB29, 0); /* CTS1 */
890 }
891
892 static struct resource uart2_resources[] = {
893 [0] = {
894 .start = AT91SAM9260_BASE_US2,
895 .end = AT91SAM9260_BASE_US2 + SZ_16K - 1,
896 .flags = IORESOURCE_MEM,
897 },
898 [1] = {
899 .start = AT91SAM9260_ID_US2,
900 .end = AT91SAM9260_ID_US2,
901 .flags = IORESOURCE_IRQ,
902 },
903 };
904
905 static struct atmel_uart_data uart2_data = {
906 .use_dma_tx = 1,
907 .use_dma_rx = 1,
908 };
909
910 static u64 uart2_dmamask = DMA_BIT_MASK(32);
911
912 static struct platform_device at91sam9260_uart2_device = {
913 .name = "atmel_usart",
914 .id = 3,
915 .dev = {
916 .dma_mask = &uart2_dmamask,
917 .coherent_dma_mask = DMA_BIT_MASK(32),
918 .platform_data = &uart2_data,
919 },
920 .resource = uart2_resources,
921 .num_resources = ARRAY_SIZE(uart2_resources),
922 };
923
924 static inline void configure_usart2_pins(unsigned pins)
925 {
926 at91_set_A_periph(AT91_PIN_PB8, 1); /* TXD2 */
927 at91_set_A_periph(AT91_PIN_PB9, 0); /* RXD2 */
928
929 if (pins & ATMEL_UART_RTS)
930 at91_set_A_periph(AT91_PIN_PA4, 0); /* RTS2 */
931 if (pins & ATMEL_UART_CTS)
932 at91_set_A_periph(AT91_PIN_PA5, 0); /* CTS2 */
933 }
934
935 static struct resource uart3_resources[] = {
936 [0] = {
937 .start = AT91SAM9260_BASE_US3,
938 .end = AT91SAM9260_BASE_US3 + SZ_16K - 1,
939 .flags = IORESOURCE_MEM,
940 },
941 [1] = {
942 .start = AT91SAM9260_ID_US3,
943 .end = AT91SAM9260_ID_US3,
944 .flags = IORESOURCE_IRQ,
945 },
946 };
947
948 static struct atmel_uart_data uart3_data = {
949 .use_dma_tx = 1,
950 .use_dma_rx = 1,
951 };
952
953 static u64 uart3_dmamask = DMA_BIT_MASK(32);
954
955 static struct platform_device at91sam9260_uart3_device = {
956 .name = "atmel_usart",
957 .id = 4,
958 .dev = {
959 .dma_mask = &uart3_dmamask,
960 .coherent_dma_mask = DMA_BIT_MASK(32),
961 .platform_data = &uart3_data,
962 },
963 .resource = uart3_resources,
964 .num_resources = ARRAY_SIZE(uart3_resources),
965 };
966
967 static inline void configure_usart3_pins(unsigned pins)
968 {
969 at91_set_A_periph(AT91_PIN_PB10, 1); /* TXD3 */
970 at91_set_A_periph(AT91_PIN_PB11, 0); /* RXD3 */
971
972 if (pins & ATMEL_UART_RTS)
973 at91_set_B_periph(AT91_PIN_PC8, 0); /* RTS3 */
974 if (pins & ATMEL_UART_CTS)
975 at91_set_B_periph(AT91_PIN_PC10, 0); /* CTS3 */
976 }
977
978 static struct resource uart4_resources[] = {
979 [0] = {
980 .start = AT91SAM9260_BASE_US4,
981 .end = AT91SAM9260_BASE_US4 + SZ_16K - 1,
982 .flags = IORESOURCE_MEM,
983 },
984 [1] = {
985 .start = AT91SAM9260_ID_US4,
986 .end = AT91SAM9260_ID_US4,
987 .flags = IORESOURCE_IRQ,
988 },
989 };
990
991 static struct atmel_uart_data uart4_data = {
992 .use_dma_tx = 1,
993 .use_dma_rx = 1,
994 };
995
996 static u64 uart4_dmamask = DMA_BIT_MASK(32);
997
998 static struct platform_device at91sam9260_uart4_device = {
999 .name = "atmel_usart",
1000 .id = 5,
1001 .dev = {
1002 .dma_mask = &uart4_dmamask,
1003 .coherent_dma_mask = DMA_BIT_MASK(32),
1004 .platform_data = &uart4_data,
1005 },
1006 .resource = uart4_resources,
1007 .num_resources = ARRAY_SIZE(uart4_resources),
1008 };
1009
1010 static inline void configure_usart4_pins(void)
1011 {
1012 at91_set_B_periph(AT91_PIN_PA31, 1); /* TXD4 */
1013 at91_set_B_periph(AT91_PIN_PA30, 0); /* RXD4 */
1014 }
1015
1016 static struct resource uart5_resources[] = {
1017 [0] = {
1018 .start = AT91SAM9260_BASE_US5,
1019 .end = AT91SAM9260_BASE_US5 + SZ_16K - 1,
1020 .flags = IORESOURCE_MEM,
1021 },
1022 [1] = {
1023 .start = AT91SAM9260_ID_US5,
1024 .end = AT91SAM9260_ID_US5,
1025 .flags = IORESOURCE_IRQ,
1026 },
1027 };
1028
1029 static struct atmel_uart_data uart5_data = {
1030 .use_dma_tx = 1,
1031 .use_dma_rx = 1,
1032 };
1033
1034 static u64 uart5_dmamask = DMA_BIT_MASK(32);
1035
1036 static struct platform_device at91sam9260_uart5_device = {
1037 .name = "atmel_usart",
1038 .id = 6,
1039 .dev = {
1040 .dma_mask = &uart5_dmamask,
1041 .coherent_dma_mask = DMA_BIT_MASK(32),
1042 .platform_data = &uart5_data,
1043 },
1044 .resource = uart5_resources,
1045 .num_resources = ARRAY_SIZE(uart5_resources),
1046 };
1047
1048 static inline void configure_usart5_pins(void)
1049 {
1050 at91_set_A_periph(AT91_PIN_PB12, 1); /* TXD5 */
1051 at91_set_A_periph(AT91_PIN_PB13, 0); /* RXD5 */
1052 }
1053
1054 static struct platform_device *__initdata at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
1055 struct platform_device *atmel_default_console_device; /* the serial console device */
1056
1057 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
1058 {
1059 struct platform_device *pdev;
1060
1061 switch (id) {
1062 case 0: /* DBGU */
1063 pdev = &at91sam9260_dbgu_device;
1064 configure_dbgu_pins();
1065 at91_clock_associate("mck", &pdev->dev, "usart");
1066 break;
1067 case AT91SAM9260_ID_US0:
1068 pdev = &at91sam9260_uart0_device;
1069 configure_usart0_pins(pins);
1070 at91_clock_associate("usart0_clk", &pdev->dev, "usart");
1071 break;
1072 case AT91SAM9260_ID_US1:
1073 pdev = &at91sam9260_uart1_device;
1074 configure_usart1_pins(pins);
1075 at91_clock_associate("usart1_clk", &pdev->dev, "usart");
1076 break;
1077 case AT91SAM9260_ID_US2:
1078 pdev = &at91sam9260_uart2_device;
1079 configure_usart2_pins(pins);
1080 at91_clock_associate("usart2_clk", &pdev->dev, "usart");
1081 break;
1082 case AT91SAM9260_ID_US3:
1083 pdev = &at91sam9260_uart3_device;
1084 configure_usart3_pins(pins);
1085 at91_clock_associate("usart3_clk", &pdev->dev, "usart");
1086 break;
1087 case AT91SAM9260_ID_US4:
1088 pdev = &at91sam9260_uart4_device;
1089 configure_usart4_pins();
1090 at91_clock_associate("usart4_clk", &pdev->dev, "usart");
1091 break;
1092 case AT91SAM9260_ID_US5:
1093 pdev = &at91sam9260_uart5_device;
1094 configure_usart5_pins();
1095 at91_clock_associate("usart5_clk", &pdev->dev, "usart");
1096 break;
1097 default:
1098 return;
1099 }
1100 pdev->id = portnr; /* update to mapped ID */
1101
1102 if (portnr < ATMEL_MAX_UART)
1103 at91_uarts[portnr] = pdev;
1104 }
1105
1106 void __init at91_set_serial_console(unsigned portnr)
1107 {
1108 if (portnr < ATMEL_MAX_UART)
1109 atmel_default_console_device = at91_uarts[portnr];
1110 }
1111
1112 void __init at91_add_device_serial(void)
1113 {
1114 int i;
1115
1116 for (i = 0; i < ATMEL_MAX_UART; i++) {
1117 if (at91_uarts[i])
1118 platform_device_register(at91_uarts[i]);
1119 }
1120
1121 if (!atmel_default_console_device)
1122 printk(KERN_INFO "AT91: No default serial console defined.\n");
1123 }
1124 #else
1125 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
1126 void __init at91_set_serial_console(unsigned portnr) {}
1127 void __init at91_add_device_serial(void) {}
1128 #endif
1129
1130
1131 /* -------------------------------------------------------------------- */
1132 /*
1133 * These devices are always present and don't need any board-specific
1134 * setup.
1135 */
1136 static int __init at91_add_standard_devices(void)
1137 {
1138 at91_add_device_rtt();
1139 at91_add_device_watchdog();
1140 at91_add_device_tc();
1141 return 0;
1142 }
1143
1144 arch_initcall(at91_add_standard_devices);
Linux kernel - Deliverables
This page took 0.141675 seconds and 5 git commands to generate.