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[PATCH] sysctl: C99 convert ctl_tables in arch/powerpc/kernel/idle.c
[linux-2.6/kvm.git] / arch / arm / mach-at91rm9200 / at91sam9261_devices.c
blobed1d79081b355575269df2eb46a0da92ffd6e445
1 /*
2 * arch/arm/mach-at91rm9200/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/platform_device.h>
17
18 #include <asm/arch/board.h>
19 #include <asm/arch/gpio.h>
20 #include <asm/arch/at91sam9261.h>
21 #include <asm/arch/at91sam9261_matrix.h>
22 #include <asm/arch/at91sam926x_mc.h>
23
24 #include "generic.h"
25
26 #define SZ_512 0x00000200
27 #define SZ_256 0x00000100
28 #define SZ_16 0x00000010
29
30 /* --------------------------------------------------------------------
31 * USB Host
32 * -------------------------------------------------------------------- */
33
34 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
35 static u64 ohci_dmamask = 0xffffffffUL;
36 static struct at91_usbh_data usbh_data;
37
38 static struct resource usbh_resources[] = {
39 [0] = {
40 .start = AT91SAM9261_UHP_BASE,
41 .end = AT91SAM9261_UHP_BASE + SZ_1M - 1,
42 .flags = IORESOURCE_MEM,
43 },
44 [1] = {
45 .start = AT91SAM9261_ID_UHP,
46 .end = AT91SAM9261_ID_UHP,
47 .flags = IORESOURCE_IRQ,
48 },
49 };
50
51 static struct platform_device at91sam9261_usbh_device = {
52 .name = "at91_ohci",
53 .id = -1,
54 .dev = {
55 .dma_mask = &ohci_dmamask,
56 .coherent_dma_mask = 0xffffffff,
57 .platform_data = &usbh_data,
58 },
59 .resource = usbh_resources,
60 .num_resources = ARRAY_SIZE(usbh_resources),
61 };
62
63 void __init at91_add_device_usbh(struct at91_usbh_data *data)
64 {
65 if (!data)
66 return;
67
68 usbh_data = *data;
69 platform_device_register(&at91sam9261_usbh_device);
70 }
71 #else
72 void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
73 #endif
74
75
76 /* --------------------------------------------------------------------
77 * USB Device (Gadget)
78 * -------------------------------------------------------------------- */
79
80 #ifdef CONFIG_USB_GADGET_AT91
81 static struct at91_udc_data udc_data;
82
83 static struct resource udc_resources[] = {
84 [0] = {
85 .start = AT91SAM9261_BASE_UDP,
86 .end = AT91SAM9261_BASE_UDP + SZ_16K - 1,
87 .flags = IORESOURCE_MEM,
88 },
89 [1] = {
90 .start = AT91SAM9261_ID_UDP,
91 .end = AT91SAM9261_ID_UDP,
92 .flags = IORESOURCE_IRQ,
93 },
94 };
95
96 static struct platform_device at91sam9261_udc_device = {
97 .name = "at91_udc",
98 .id = -1,
99 .dev = {
100 .platform_data = &udc_data,
101 },
102 .resource = udc_resources,
103 .num_resources = ARRAY_SIZE(udc_resources),
104 };
105
106 void __init at91_add_device_udc(struct at91_udc_data *data)
107 {
108 unsigned long x;
109
110 if (!data)
111 return;
112
113 if (data->vbus_pin) {
114 at91_set_gpio_input(data->vbus_pin, 0);
115 at91_set_deglitch(data->vbus_pin, 1);
116 }
117
118 /* Pullup pin is handled internally */
119 x = at91_sys_read(AT91_MATRIX_USBPUCR);
120 at91_sys_write(AT91_MATRIX_USBPUCR, x | AT91_MATRIX_USBPUCR_PUON);
121
122 udc_data = *data;
123 platform_device_register(&at91sam9261_udc_device);
124 }
125 #else
126 void __init at91_add_device_udc(struct at91_udc_data *data) {}
127 #endif
128
129 /* --------------------------------------------------------------------
130 * MMC / SD
131 * -------------------------------------------------------------------- */
132
133 #if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
134 static u64 mmc_dmamask = 0xffffffffUL;
135 static struct at91_mmc_data mmc_data;
136
137 static struct resource mmc_resources[] = {
138 [0] = {
139 .start = AT91SAM9261_BASE_MCI,
140 .end = AT91SAM9261_BASE_MCI + SZ_16K - 1,
141 .flags = IORESOURCE_MEM,
142 },
143 [1] = {
144 .start = AT91SAM9261_ID_MCI,
145 .end = AT91SAM9261_ID_MCI,
146 .flags = IORESOURCE_IRQ,
147 },
148 };
149
150 static struct platform_device at91sam9261_mmc_device = {
151 .name = "at91_mci",
152 .id = -1,
153 .dev = {
154 .dma_mask = &mmc_dmamask,
155 .coherent_dma_mask = 0xffffffff,
156 .platform_data = &mmc_data,
157 },
158 .resource = mmc_resources,
159 .num_resources = ARRAY_SIZE(mmc_resources),
160 };
161
162 void __init at91_add_device_mmc(struct at91_mmc_data *data)
163 {
164 if (!data)
165 return;
166
167 /* input/irq */
168 if (data->det_pin) {
169 at91_set_gpio_input(data->det_pin, 1);
170 at91_set_deglitch(data->det_pin, 1);
171 }
172 if (data->wp_pin)
173 at91_set_gpio_input(data->wp_pin, 1);
174 if (data->vcc_pin)
175 at91_set_gpio_output(data->vcc_pin, 0);
176
177 /* CLK */
178 at91_set_B_periph(AT91_PIN_PA2, 0);
179
180 /* CMD */
181 at91_set_B_periph(AT91_PIN_PA1, 1);
182
183 /* DAT0, maybe DAT1..DAT3 */
184 at91_set_B_periph(AT91_PIN_PA0, 1);
185 if (data->wire4) {
186 at91_set_B_periph(AT91_PIN_PA4, 1);
187 at91_set_B_periph(AT91_PIN_PA5, 1);
188 at91_set_B_periph(AT91_PIN_PA6, 1);
189 }
190
191 mmc_data = *data;
192 platform_device_register(&at91sam9261_mmc_device);
193 }
194 #else
195 void __init at91_add_device_mmc(struct at91_mmc_data *data) {}
196 #endif
197
198
199 /* --------------------------------------------------------------------
200 * NAND / SmartMedia
201 * -------------------------------------------------------------------- */
202
203 #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
204 static struct at91_nand_data nand_data;
205
206 #define NAND_BASE AT91_CHIPSELECT_3
207
208 static struct resource nand_resources[] = {
209 {
210 .start = NAND_BASE,
211 .end = NAND_BASE + SZ_256M - 1,
212 .flags = IORESOURCE_MEM,
213 }
214 };
215
216 static struct platform_device at91_nand_device = {
217 .name = "at91_nand",
218 .id = -1,
219 .dev = {
220 .platform_data = &nand_data,
221 },
222 .resource = nand_resources,
223 .num_resources = ARRAY_SIZE(nand_resources),
224 };
225
226 void __init at91_add_device_nand(struct at91_nand_data *data)
227 {
228 unsigned long csa, mode;
229
230 if (!data)
231 return;
232
233 csa = at91_sys_read(AT91_MATRIX_EBICSA);
234 at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC);
235
236 /* set the bus interface characteristics */
237 at91_sys_write(AT91_SMC_SETUP(3), AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0)
238 | AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
239
240 at91_sys_write(AT91_SMC_PULSE(3), AT91_SMC_NWEPULSE_(2) | AT91_SMC_NCS_WRPULSE_(5)
241 | AT91_SMC_NRDPULSE_(2) | AT91_SMC_NCS_RDPULSE_(5));
242
243 at91_sys_write(AT91_SMC_CYCLE(3), AT91_SMC_NWECYCLE_(7) | AT91_SMC_NRDCYCLE_(7));
244
245 if (data->bus_width_16)
246 mode = AT91_SMC_DBW_16;
247 else
248 mode = AT91_SMC_DBW_8;
249 at91_sys_write(AT91_SMC_MODE(3), mode | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(1));
250
251 /* enable pin */
252 if (data->enable_pin)
253 at91_set_gpio_output(data->enable_pin, 1);
254
255 /* ready/busy pin */
256 if (data->rdy_pin)
257 at91_set_gpio_input(data->rdy_pin, 1);
258
259 /* card detect pin */
260 if (data->det_pin)
261 at91_set_gpio_input(data->det_pin, 1);
262
263 at91_set_A_periph(AT91_PIN_PC0, 0); /* NANDOE */
264 at91_set_A_periph(AT91_PIN_PC1, 0); /* NANDWE */
265
266 nand_data = *data;
267 platform_device_register(&at91_nand_device);
268 }
269
270 #else
271 void __init at91_add_device_nand(struct at91_nand_data *data) {}
272 #endif
273
274
275 /* --------------------------------------------------------------------
276 * TWI (i2c)
277 * -------------------------------------------------------------------- */
278
279 #if defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
280
281 static struct resource twi_resources[] = {
282 [0] = {
283 .start = AT91SAM9261_BASE_TWI,
284 .end = AT91SAM9261_BASE_TWI + SZ_16K - 1,
285 .flags = IORESOURCE_MEM,
286 },
287 [1] = {
288 .start = AT91SAM9261_ID_TWI,
289 .end = AT91SAM9261_ID_TWI,
290 .flags = IORESOURCE_IRQ,
291 },
292 };
293
294 static struct platform_device at91sam9261_twi_device = {
295 .name = "at91_i2c",
296 .id = -1,
297 .resource = twi_resources,
298 .num_resources = ARRAY_SIZE(twi_resources),
299 };
300
301 void __init at91_add_device_i2c(void)
302 {
303 /* pins used for TWI interface */
304 at91_set_A_periph(AT91_PIN_PA7, 0); /* TWD */
305 at91_set_multi_drive(AT91_PIN_PA7, 1);
306
307 at91_set_A_periph(AT91_PIN_PA8, 0); /* TWCK */
308 at91_set_multi_drive(AT91_PIN_PA8, 1);
309
310 platform_device_register(&at91sam9261_twi_device);
311 }
312 #else
313 void __init at91_add_device_i2c(void) {}
314 #endif
315
316
317 /* --------------------------------------------------------------------
318 * SPI
319 * -------------------------------------------------------------------- */
320
321 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
322 static u64 spi_dmamask = 0xffffffffUL;
323
324 static struct resource spi0_resources[] = {
325 [0] = {
326 .start = AT91SAM9261_BASE_SPI0,
327 .end = AT91SAM9261_BASE_SPI0 + SZ_16K - 1,
328 .flags = IORESOURCE_MEM,
329 },
330 [1] = {
331 .start = AT91SAM9261_ID_SPI0,
332 .end = AT91SAM9261_ID_SPI0,
333 .flags = IORESOURCE_IRQ,
334 },
335 };
336
337 static struct platform_device at91sam9261_spi0_device = {
338 .name = "atmel_spi",
339 .id = 0,
340 .dev = {
341 .dma_mask = &spi_dmamask,
342 .coherent_dma_mask = 0xffffffff,
343 },
344 .resource = spi0_resources,
345 .num_resources = ARRAY_SIZE(spi0_resources),
346 };
347
348 static const unsigned spi0_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
349
350 static struct resource spi1_resources[] = {
351 [0] = {
352 .start = AT91SAM9261_BASE_SPI1,
353 .end = AT91SAM9261_BASE_SPI1 + SZ_16K - 1,
354 .flags = IORESOURCE_MEM,
355 },
356 [1] = {
357 .start = AT91SAM9261_ID_SPI1,
358 .end = AT91SAM9261_ID_SPI1,
359 .flags = IORESOURCE_IRQ,
360 },
361 };
362
363 static struct platform_device at91sam9261_spi1_device = {
364 .name = "atmel_spi",
365 .id = 1,
366 .dev = {
367 .dma_mask = &spi_dmamask,
368 .coherent_dma_mask = 0xffffffff,
369 },
370 .resource = spi1_resources,
371 .num_resources = ARRAY_SIZE(spi1_resources),
372 };
373
374 static const unsigned spi1_standard_cs[4] = { AT91_PIN_PB28, AT91_PIN_PA24, AT91_PIN_PA25, AT91_PIN_PA26 };
375
376 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
377 {
378 int i;
379 unsigned long cs_pin;
380 short enable_spi0 = 0;
381 short enable_spi1 = 0;
382
383 /* Choose SPI chip-selects */
384 for (i = 0; i < nr_devices; i++) {
385 if (devices[i].controller_data)
386 cs_pin = (unsigned long) devices[i].controller_data;
387 else if (devices[i].bus_num == 0)
388 cs_pin = spi0_standard_cs[devices[i].chip_select];
389 else
390 cs_pin = spi1_standard_cs[devices[i].chip_select];
391
392 if (devices[i].bus_num == 0)
393 enable_spi0 = 1;
394 else
395 enable_spi1 = 1;
396
397 /* enable chip-select pin */
398 at91_set_gpio_output(cs_pin, 1);
399
400 /* pass chip-select pin to driver */
401 devices[i].controller_data = (void *) cs_pin;
402 }
403
404 spi_register_board_info(devices, nr_devices);
405
406 /* Configure SPI bus(es) */
407 if (enable_spi0) {
408 at91_set_A_periph(AT91_PIN_PA0, 0); /* SPI0_MISO */
409 at91_set_A_periph(AT91_PIN_PA1, 0); /* SPI0_MOSI */
410 at91_set_A_periph(AT91_PIN_PA2, 0); /* SPI0_SPCK */
411
412 at91_clock_associate("spi0_clk", &at91sam9261_spi0_device.dev, "spi_clk");
413 platform_device_register(&at91sam9261_spi0_device);
414 }
415 if (enable_spi1) {
416 at91_set_A_periph(AT91_PIN_PB30, 0); /* SPI1_MISO */
417 at91_set_A_periph(AT91_PIN_PB31, 0); /* SPI1_MOSI */
418 at91_set_A_periph(AT91_PIN_PB29, 0); /* SPI1_SPCK */
419
420 at91_clock_associate("spi1_clk", &at91sam9261_spi1_device.dev, "spi_clk");
421 platform_device_register(&at91sam9261_spi1_device);
422 }
423 }
424 #else
425 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
426 #endif
427
428
429 /* --------------------------------------------------------------------
430 * LCD Controller
431 * -------------------------------------------------------------------- */
432
433 #if defined(CONFIG_FB_AT91) || defined(CONFIG_FB_AT91_MODULE)
434 static u64 lcdc_dmamask = 0xffffffffUL;
435 static struct at91fb_info lcdc_data;
436
437 static struct resource lcdc_resources[] = {
438 [0] = {
439 .start = AT91SAM9261_LCDC_BASE,
440 .end = AT91SAM9261_LCDC_BASE + SZ_4K - 1,
441 .flags = IORESOURCE_MEM,
442 },
443 [1] = {
444 .start = AT91SAM9261_ID_LCDC,
445 .end = AT91SAM9261_ID_LCDC,
446 .flags = IORESOURCE_IRQ,
447 },
448 #if defined(CONFIG_FB_INTSRAM)
449 [2] = {
450 .start = AT91SAM9261_SRAM_BASE,
451 .end = AT91SAM9261_SRAM_BASE + AT91SAM9261_SRAM_SIZE - 1,
452 .flags = IORESOURCE_MEM,
453 },
454 #endif
455 };
456
457 static struct platform_device at91_lcdc_device = {
458 .name = "at91-fb",
459 .id = 0,
460 .dev = {
461 .dma_mask = &lcdc_dmamask,
462 .coherent_dma_mask = 0xffffffff,
463 .platform_data = &lcdc_data,
464 },
465 .resource = lcdc_resources,
466 .num_resources = ARRAY_SIZE(lcdc_resources),
467 };
468
469 void __init at91_add_device_lcdc(struct at91fb_info *data)
470 {
471 if (!data) {
472 return;
473 }
474
475 at91_set_A_periph(AT91_PIN_PB1, 0); /* LCDHSYNC */
476 at91_set_A_periph(AT91_PIN_PB2, 0); /* LCDDOTCK */
477 at91_set_A_periph(AT91_PIN_PB3, 0); /* LCDDEN */
478 at91_set_A_periph(AT91_PIN_PB4, 0); /* LCDCC */
479 at91_set_A_periph(AT91_PIN_PB7, 0); /* LCDD2 */
480 at91_set_A_periph(AT91_PIN_PB8, 0); /* LCDD3 */
481 at91_set_A_periph(AT91_PIN_PB9, 0); /* LCDD4 */
482 at91_set_A_periph(AT91_PIN_PB10, 0); /* LCDD5 */
483 at91_set_A_periph(AT91_PIN_PB11, 0); /* LCDD6 */
484 at91_set_A_periph(AT91_PIN_PB12, 0); /* LCDD7 */
485 at91_set_A_periph(AT91_PIN_PB15, 0); /* LCDD10 */
486 at91_set_A_periph(AT91_PIN_PB16, 0); /* LCDD11 */
487 at91_set_A_periph(AT91_PIN_PB17, 0); /* LCDD12 */
488 at91_set_A_periph(AT91_PIN_PB18, 0); /* LCDD13 */
489 at91_set_A_periph(AT91_PIN_PB19, 0); /* LCDD14 */
490 at91_set_A_periph(AT91_PIN_PB20, 0); /* LCDD15 */
491 at91_set_B_periph(AT91_PIN_PB23, 0); /* LCDD18 */
492 at91_set_B_periph(AT91_PIN_PB24, 0); /* LCDD19 */
493 at91_set_B_periph(AT91_PIN_PB25, 0); /* LCDD20 */
494 at91_set_B_periph(AT91_PIN_PB26, 0); /* LCDD21 */
495 at91_set_B_periph(AT91_PIN_PB27, 0); /* LCDD22 */
496 at91_set_B_periph(AT91_PIN_PB28, 0); /* LCDD23 */
497
498 lcdc_data = *data;
499 platform_device_register(&at91_lcdc_device);
500 }
501 #else
502 void __init at91_add_device_lcdc(struct at91fb_info *data) {}
503 #endif
504
505
506 /* --------------------------------------------------------------------
507 * LEDs
508 * -------------------------------------------------------------------- */
509
510 #if defined(CONFIG_LEDS)
511 u8 at91_leds_cpu;
512 u8 at91_leds_timer;
513
514 void __init at91_init_leds(u8 cpu_led, u8 timer_led)
515 {
516 at91_leds_cpu = cpu_led;
517 at91_leds_timer = timer_led;
518 }
519 #else
520 void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
521 #endif
522
523
524 /* --------------------------------------------------------------------
525 * UART
526 * -------------------------------------------------------------------- */
527
528 #if defined(CONFIG_SERIAL_ATMEL)
529 static struct resource dbgu_resources[] = {
530 [0] = {
531 .start = AT91_VA_BASE_SYS + AT91_DBGU,
532 .end = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
533 .flags = IORESOURCE_MEM,
534 },
535 [1] = {
536 .start = AT91_ID_SYS,
537 .end = AT91_ID_SYS,
538 .flags = IORESOURCE_IRQ,
539 },
540 };
541
542 static struct atmel_uart_data dbgu_data = {
543 .use_dma_tx = 0,
544 .use_dma_rx = 0, /* DBGU not capable of receive DMA */
545 .regs = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
546 };
547
548 static struct platform_device at91sam9261_dbgu_device = {
549 .name = "atmel_usart",
550 .id = 0,
551 .dev = {
552 .platform_data = &dbgu_data,
553 .coherent_dma_mask = 0xffffffff,
554 },
555 .resource = dbgu_resources,
556 .num_resources = ARRAY_SIZE(dbgu_resources),
557 };
558
559 static inline void configure_dbgu_pins(void)
560 {
561 at91_set_A_periph(AT91_PIN_PA9, 0); /* DRXD */
562 at91_set_A_periph(AT91_PIN_PA10, 1); /* DTXD */
563 }
564
565 static struct resource uart0_resources[] = {
566 [0] = {
567 .start = AT91SAM9261_BASE_US0,
568 .end = AT91SAM9261_BASE_US0 + SZ_16K - 1,
569 .flags = IORESOURCE_MEM,
570 },
571 [1] = {
572 .start = AT91SAM9261_ID_US0,
573 .end = AT91SAM9261_ID_US0,
574 .flags = IORESOURCE_IRQ,
575 },
576 };
577
578 static struct atmel_uart_data uart0_data = {
579 .use_dma_tx = 1,
580 .use_dma_rx = 1,
581 };
582
583 static struct platform_device at91sam9261_uart0_device = {
584 .name = "atmel_usart",
585 .id = 1,
586 .dev = {
587 .platform_data = &uart0_data,
588 .coherent_dma_mask = 0xffffffff,
589 },
590 .resource = uart0_resources,
591 .num_resources = ARRAY_SIZE(uart0_resources),
592 };
593
594 static inline void configure_usart0_pins(void)
595 {
596 at91_set_A_periph(AT91_PIN_PC8, 1); /* TXD0 */
597 at91_set_A_periph(AT91_PIN_PC9, 0); /* RXD0 */
598 at91_set_A_periph(AT91_PIN_PC10, 0); /* RTS0 */
599 at91_set_A_periph(AT91_PIN_PC11, 0); /* CTS0 */
600 }
601
602 static struct resource uart1_resources[] = {
603 [0] = {
604 .start = AT91SAM9261_BASE_US1,
605 .end = AT91SAM9261_BASE_US1 + SZ_16K - 1,
606 .flags = IORESOURCE_MEM,
607 },
608 [1] = {
609 .start = AT91SAM9261_ID_US1,
610 .end = AT91SAM9261_ID_US1,
611 .flags = IORESOURCE_IRQ,
612 },
613 };
614
615 static struct atmel_uart_data uart1_data = {
616 .use_dma_tx = 1,
617 .use_dma_rx = 1,
618 };
619
620 static struct platform_device at91sam9261_uart1_device = {
621 .name = "atmel_usart",
622 .id = 2,
623 .dev = {
624 .platform_data = &uart1_data,
625 .coherent_dma_mask = 0xffffffff,
626 },
627 .resource = uart1_resources,
628 .num_resources = ARRAY_SIZE(uart1_resources),
629 };
630
631 static inline void configure_usart1_pins(void)
632 {
633 at91_set_A_periph(AT91_PIN_PC12, 1); /* TXD1 */
634 at91_set_A_periph(AT91_PIN_PC13, 0); /* RXD1 */
635 }
636
637 static struct resource uart2_resources[] = {
638 [0] = {
639 .start = AT91SAM9261_BASE_US2,
640 .end = AT91SAM9261_BASE_US2 + SZ_16K - 1,
641 .flags = IORESOURCE_MEM,
642 },
643 [1] = {
644 .start = AT91SAM9261_ID_US2,
645 .end = AT91SAM9261_ID_US2,
646 .flags = IORESOURCE_IRQ,
647 },
648 };
649
650 static struct atmel_uart_data uart2_data = {
651 .use_dma_tx = 1,
652 .use_dma_rx = 1,
653 };
654
655 static struct platform_device at91sam9261_uart2_device = {
656 .name = "atmel_usart",
657 .id = 3,
658 .dev = {
659 .platform_data = &uart2_data,
660 .coherent_dma_mask = 0xffffffff,
661 },
662 .resource = uart2_resources,
663 .num_resources = ARRAY_SIZE(uart2_resources),
664 };
665
666 static inline void configure_usart2_pins(void)
667 {
668 at91_set_A_periph(AT91_PIN_PC15, 0); /* RXD2 */
669 at91_set_A_periph(AT91_PIN_PC14, 1); /* TXD2 */
670 }
671
672 struct platform_device *at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
673 struct platform_device *atmel_default_console_device; /* the serial console device */
674
675 void __init at91_init_serial(struct at91_uart_config *config)
676 {
677 int i;
678
679 /* Fill in list of supported UARTs */
680 for (i = 0; i < config->nr_tty; i++) {
681 switch (config->tty_map[i]) {
682 case 0:
683 configure_usart0_pins();
684 at91_uarts[i] = &at91sam9261_uart0_device;
685 at91_clock_associate("usart0_clk", &at91sam9261_uart0_device.dev, "usart");
686 break;
687 case 1:
688 configure_usart1_pins();
689 at91_uarts[i] = &at91sam9261_uart1_device;
690 at91_clock_associate("usart1_clk", &at91sam9261_uart1_device.dev, "usart");
691 break;
692 case 2:
693 configure_usart2_pins();
694 at91_uarts[i] = &at91sam9261_uart2_device;
695 at91_clock_associate("usart2_clk", &at91sam9261_uart2_device.dev, "usart");
696 break;
697 case 3:
698 configure_dbgu_pins();
699 at91_uarts[i] = &at91sam9261_dbgu_device;
700 at91_clock_associate("mck", &at91sam9261_dbgu_device.dev, "usart");
701 break;
702 default:
703 continue;
704 }
705 at91_uarts[i]->id = i; /* update ID number to mapped ID */
706 }
707
708 /* Set serial console device */
709 if (config->console_tty < ATMEL_MAX_UART)
710 atmel_default_console_device = at91_uarts[config->console_tty];
711 if (!atmel_default_console_device)
712 printk(KERN_INFO "AT91: No default serial console defined.\n");
713 }
714
715 void __init at91_add_device_serial(void)
716 {
717 int i;
718
719 for (i = 0; i < ATMEL_MAX_UART; i++) {
720 if (at91_uarts[i])
721 platform_device_register(at91_uarts[i]);
722 }
723 }
724 #else
725 void __init at91_init_serial(struct at91_uart_config *config) {}
726 void __init at91_add_device_serial(void) {}
727 #endif
728
729
730 /* -------------------------------------------------------------------- */
731
732 /*
733 * These devices are always present and don't need any board-specific
734 * setup.
735 */
736 static int __init at91_add_standard_devices(void)
737 {
738 return 0;
739 }
740
741 arch_initcall(at91_add_standard_devices);
kernel-based virtual machine