bf753e306a3ac5ab9cd63da2e52f533bc4a0039b
[linux-2.6.git] / arch / arm / mach-at91rm9200 / devices.c
1 /*
2  * arch/arm/mach-at91rm9200/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/config.h>
17 #include <linux/platform_device.h>
18
19 #include <asm/arch/hardware.h>
20 #include <asm/arch/board.h>
21 #include <asm/arch/gpio.h>
22
23 #include "generic.h"
24
25 #define SZ_512  0x00000200
26 #define SZ_256  0x00000100
27 #define SZ_16   0x00000010
28
29 /* --------------------------------------------------------------------
30  *  USB Host
31  * -------------------------------------------------------------------- */
32
33 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
34 static u64 ohci_dmamask = 0xffffffffUL;
35 static struct at91_usbh_data usbh_data;
36
37 static struct resource at91_usbh_resources[] = {
38         [0] = {
39                 .start  = AT91_UHP_BASE,
40                 .end    = AT91_UHP_BASE + SZ_1M - 1,
41                 .flags  = IORESOURCE_MEM,
42         },
43         [1] = {
44                 .start  = AT91_ID_UHP,
45                 .end    = AT91_ID_UHP,
46                 .flags  = IORESOURCE_IRQ,
47         },
48 };
49
50 static struct platform_device at91rm9200_usbh_device = {
51         .name           = "at91_ohci",
52         .id             = -1,
53         .dev            = {
54                                 .dma_mask               = &ohci_dmamask,
55                                 .coherent_dma_mask      = 0xffffffff,
56                                 .platform_data          = &usbh_data,
57         },
58         .resource       = at91_usbh_resources,
59         .num_resources  = ARRAY_SIZE(at91_usbh_resources),
60 };
61
62 void __init at91_add_device_usbh(struct at91_usbh_data *data)
63 {
64         if (!data)
65                 return;
66
67         usbh_data = *data;
68         platform_device_register(&at91rm9200_usbh_device);
69 }
70 #else
71 void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
72 #endif
73
74
75 /* --------------------------------------------------------------------
76  *  USB Device (Gadget)
77  * -------------------------------------------------------------------- */
78
79 #ifdef CONFIG_USB_GADGET_AT91
80 static struct at91_udc_data udc_data;
81
82 static struct resource at91_udc_resources[] = {
83         [0] = {
84                 .start  = AT91_BASE_UDP,
85                 .end    = AT91_BASE_UDP + SZ_16K - 1,
86                 .flags  = IORESOURCE_MEM,
87         },
88         [1] = {
89                 .start  = AT91_ID_UDP,
90                 .end    = AT91_ID_UDP,
91                 .flags  = IORESOURCE_IRQ,
92         },
93 };
94
95 static struct platform_device at91rm9200_udc_device = {
96         .name           = "at91_udc",
97         .id             = -1,
98         .dev            = {
99                                 .platform_data          = &udc_data,
100         },
101         .resource       = at91_udc_resources,
102         .num_resources  = ARRAY_SIZE(at91_udc_resources),
103 };
104
105 void __init at91_add_device_udc(struct at91_udc_data *data)
106 {
107         if (!data)
108                 return;
109
110         if (data->vbus_pin) {
111                 at91_set_gpio_input(data->vbus_pin, 0);
112                 at91_set_deglitch(data->vbus_pin, 1);
113         }
114         if (data->pullup_pin)
115                 at91_set_gpio_output(data->pullup_pin, 0);
116
117         udc_data = *data;
118         platform_device_register(&at91rm9200_udc_device);
119 }
120 #else
121 void __init at91_add_device_udc(struct at91_udc_data *data) {}
122 #endif
123
124
125 /* --------------------------------------------------------------------
126  *  Ethernet
127  * -------------------------------------------------------------------- */
128
129 #if defined(CONFIG_ARM_AT91_ETHER) || defined(CONFIG_ARM_AT91_ETHER_MODULE)
130 static u64 eth_dmamask = 0xffffffffUL;
131 static struct at91_eth_data eth_data;
132
133 static struct resource at91_eth_resources[] = {
134         [0] = {
135                 .start  = AT91_BASE_EMAC,
136                 .end    = AT91_BASE_EMAC + SZ_16K - 1,
137                 .flags  = IORESOURCE_MEM,
138         },
139         [1] = {
140                 .start  = AT91_ID_EMAC,
141                 .end    = AT91_ID_EMAC,
142                 .flags  = IORESOURCE_IRQ,
143         },
144 };
145
146 static struct platform_device at91rm9200_eth_device = {
147         .name           = "at91_ether",
148         .id             = -1,
149         .dev            = {
150                                 .dma_mask               = &eth_dmamask,
151                                 .coherent_dma_mask      = 0xffffffff,
152                                 .platform_data          = &eth_data,
153         },
154         .resource       = at91_eth_resources,
155         .num_resources  = ARRAY_SIZE(at91_eth_resources),
156 };
157
158 void __init at91_add_device_eth(struct at91_eth_data *data)
159 {
160         if (!data)
161                 return;
162
163         if (data->phy_irq_pin) {
164                 at91_set_gpio_input(data->phy_irq_pin, 0);
165                 at91_set_deglitch(data->phy_irq_pin, 1);
166         }
167
168         /* Pins used for MII and RMII */
169         at91_set_A_periph(AT91_PIN_PA16, 0);    /* EMDIO */
170         at91_set_A_periph(AT91_PIN_PA15, 0);    /* EMDC */
171         at91_set_A_periph(AT91_PIN_PA14, 0);    /* ERXER */
172         at91_set_A_periph(AT91_PIN_PA13, 0);    /* ERX1 */
173         at91_set_A_periph(AT91_PIN_PA12, 0);    /* ERX0 */
174         at91_set_A_periph(AT91_PIN_PA11, 0);    /* ECRS_ECRSDV */
175         at91_set_A_periph(AT91_PIN_PA10, 0);    /* ETX1 */
176         at91_set_A_periph(AT91_PIN_PA9, 0);     /* ETX0 */
177         at91_set_A_periph(AT91_PIN_PA8, 0);     /* ETXEN */
178         at91_set_A_periph(AT91_PIN_PA7, 0);     /* ETXCK_EREFCK */
179
180         if (!data->is_rmii) {
181                 at91_set_B_periph(AT91_PIN_PB19, 0);    /* ERXCK */
182                 at91_set_B_periph(AT91_PIN_PB18, 0);    /* ECOL */
183                 at91_set_B_periph(AT91_PIN_PB17, 0);    /* ERXDV */
184                 at91_set_B_periph(AT91_PIN_PB16, 0);    /* ERX3 */
185                 at91_set_B_periph(AT91_PIN_PB15, 0);    /* ERX2 */
186                 at91_set_B_periph(AT91_PIN_PB14, 0);    /* ETXER */
187                 at91_set_B_periph(AT91_PIN_PB13, 0);    /* ETX3 */
188                 at91_set_B_periph(AT91_PIN_PB12, 0);    /* ETX2 */
189         }
190
191         eth_data = *data;
192         platform_device_register(&at91rm9200_eth_device);
193 }
194 #else
195 void __init at91_add_device_eth(struct at91_eth_data *data) {}
196 #endif
197
198
199 /* --------------------------------------------------------------------
200  *  Compact Flash / PCMCIA
201  * -------------------------------------------------------------------- */
202
203 #if defined(CONFIG_AT91_CF) || defined(CONFIG_AT91_CF_MODULE)
204 static struct at91_cf_data cf_data;
205
206 static struct resource at91_cf_resources[] = {
207         [0] = {
208                 .start  = AT91_CF_BASE,
209                 /* ties up CS4, CS5 and CS6 */
210                 .end    = AT91_CF_BASE + (0x30000000 - 1),
211                 .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
212         },
213 };
214
215 static struct platform_device at91rm9200_cf_device = {
216         .name           = "at91_cf",
217         .id             = -1,
218         .dev            = {
219                                 .platform_data          = &cf_data,
220         },
221         .resource       = at91_cf_resources,
222         .num_resources  = ARRAY_SIZE(at91_cf_resources),
223 };
224
225 void __init at91_add_device_cf(struct at91_cf_data *data)
226 {
227         if (!data)
228                 return;
229
230         /* input/irq */
231         if (data->irq_pin) {
232                 at91_set_gpio_input(data->irq_pin, 1);
233                 at91_set_deglitch(data->irq_pin, 1);
234         }
235         at91_set_gpio_input(data->det_pin, 1);
236         at91_set_deglitch(data->det_pin, 1);
237
238         /* outputs, initially off */
239         if (data->vcc_pin)
240                 at91_set_gpio_output(data->vcc_pin, 0);
241         at91_set_gpio_output(data->rst_pin, 0);
242
243         /* force poweron defaults for these pins ... */
244         at91_set_A_periph(AT91_PIN_PC9, 0);     /* A25/CFRNW */
245         at91_set_A_periph(AT91_PIN_PC10, 0);    /* NCS4/CFCS */
246         at91_set_A_periph(AT91_PIN_PC11, 0);    /* NCS5/CFCE1 */
247         at91_set_A_periph(AT91_PIN_PC12, 0);    /* NCS6/CFCE2 */
248
249         cf_data = *data;
250         platform_device_register(&at91rm9200_cf_device);
251 }
252 #else
253 void __init at91_add_device_cf(struct at91_cf_data *data) {}
254 #endif
255
256
257 /* --------------------------------------------------------------------
258  *  MMC / SD
259  * -------------------------------------------------------------------- */
260
261 #if defined(CONFIG_MMC_AT91RM9200) || defined(CONFIG_MMC_AT91RM9200_MODULE)
262 static u64 mmc_dmamask = 0xffffffffUL;
263 static struct at91_mmc_data mmc_data;
264
265 static struct resource at91_mmc_resources[] = {
266         [0] = {
267                 .start  = AT91_BASE_MCI,
268                 .end    = AT91_BASE_MCI + SZ_16K - 1,
269                 .flags  = IORESOURCE_MEM,
270         },
271         [1] = {
272                 .start  = AT91_ID_MCI,
273                 .end    = AT91_ID_MCI,
274                 .flags  = IORESOURCE_IRQ,
275         },
276 };
277
278 static struct platform_device at91rm9200_mmc_device = {
279         .name           = "at91_mci",
280         .id             = -1,
281         .dev            = {
282                                 .dma_mask               = &mmc_dmamask,
283                                 .coherent_dma_mask      = 0xffffffff,
284                                 .platform_data          = &mmc_data,
285         },
286         .resource       = at91_mmc_resources,
287         .num_resources  = ARRAY_SIZE(at91_mmc_resources),
288 };
289
290 void __init at91_add_device_mmc(struct at91_mmc_data *data)
291 {
292         if (!data)
293                 return;
294
295         /* input/irq */
296         if (data->det_pin) {
297                 at91_set_gpio_input(data->det_pin, 1);
298                 at91_set_deglitch(data->det_pin, 1);
299         }
300         if (data->wp_pin)
301                 at91_set_gpio_input(data->wp_pin, 1);
302
303         /* CLK */
304         at91_set_A_periph(AT91_PIN_PA27, 0);
305
306         if (data->is_b) {
307                 /* CMD */
308                 at91_set_B_periph(AT91_PIN_PA8, 0);
309
310                 /* DAT0, maybe DAT1..DAT3 */
311                 at91_set_B_periph(AT91_PIN_PA9, 0);
312                 if (data->wire4) {
313                         at91_set_B_periph(AT91_PIN_PA10, 0);
314                         at91_set_B_periph(AT91_PIN_PA11, 0);
315                         at91_set_B_periph(AT91_PIN_PA12, 0);
316                 }
317         } else {
318                 /* CMD */
319                 at91_set_A_periph(AT91_PIN_PA28, 0);
320
321                 /* DAT0, maybe DAT1..DAT3 */
322                 at91_set_A_periph(AT91_PIN_PA29, 0);
323                 if (data->wire4) {
324                         at91_set_B_periph(AT91_PIN_PB3, 0);
325                         at91_set_B_periph(AT91_PIN_PB4, 0);
326                         at91_set_B_periph(AT91_PIN_PB5, 0);
327                 }
328         }
329
330         mmc_data = *data;
331         platform_device_register(&at91rm9200_mmc_device);
332 }
333 #else
334 void __init at91_add_device_mmc(struct at91_mmc_data *data) {}
335 #endif
336
337
338 /* --------------------------------------------------------------------
339  *  NAND / SmartMedia
340  * -------------------------------------------------------------------- */
341
342 #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
343 static struct at91_nand_data nand_data;
344
345 static struct resource at91_nand_resources[] = {
346         {
347                 .start  = AT91_SMARTMEDIA_BASE,
348                 .end    = AT91_SMARTMEDIA_BASE + SZ_8M - 1,
349                 .flags  = IORESOURCE_MEM,
350         }
351 };
352
353 static struct platform_device at91_nand_device = {
354         .name           = "at91_nand",
355         .id             = -1,
356         .dev            = {
357                                 .platform_data  = &nand_data,
358         },
359         .resource       = at91_nand_resources,
360         .num_resources  = ARRAY_SIZE(at91_nand_resources),
361 };
362
363 void __init at91_add_device_nand(struct at91_nand_data *data)
364 {
365         if (!data)
366                 return;
367
368         /* enable pin */
369         if (data->enable_pin)
370                 at91_set_gpio_output(data->enable_pin, 1);
371
372         /* ready/busy pin */
373         if (data->rdy_pin)
374                 at91_set_gpio_input(data->rdy_pin, 1);
375
376         /* card detect pin */
377         if (data->det_pin)
378                 at91_set_gpio_input(data->det_pin, 1);
379
380         at91_set_A_periph(AT91_PIN_PC1, 0);             /* SMOE */
381         at91_set_A_periph(AT91_PIN_PC3, 0);             /* SMWE */
382
383         nand_data = *data;
384         platform_device_register(&at91_nand_device);
385 }
386 #else
387 void __init at91_add_device_nand(struct at91_nand_data *data) {}
388 #endif
389
390
391 /* --------------------------------------------------------------------
392  *  TWI (i2c)
393  * -------------------------------------------------------------------- */
394
395 #if defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
396 static struct platform_device at91rm9200_twi_device = {
397         .name           = "at91_i2c",
398         .id             = -1,
399         .num_resources  = 0,
400 };
401
402 void __init at91_add_device_i2c(void)
403 {
404         /* pins used for TWI interface */
405         at91_set_A_periph(AT91_PIN_PA25, 0);            /* TWD */
406         at91_set_multi_drive(AT91_PIN_PA25, 1);
407
408         at91_set_A_periph(AT91_PIN_PA26, 0);            /* TWCK */
409         at91_set_multi_drive(AT91_PIN_PA26, 1);
410
411         platform_device_register(&at91rm9200_twi_device);
412 }
413 #else
414 void __init at91_add_device_i2c(void) {}
415 #endif
416
417
418 /* --------------------------------------------------------------------
419  *  SPI
420  * -------------------------------------------------------------------- */
421
422 #if defined(CONFIG_SPI_AT91) || defined(CONFIG_SPI_AT91_MODULE) || defined(CONFIG_AT91_SPI) || defined(CONFIG_AT91_SPI_MODULE)
423 static u64 spi_dmamask = 0xffffffffUL;
424
425 static struct resource at91_spi_resources[] = {
426         [0] = {
427                 .start  = AT91_BASE_SPI,
428                 .end    = AT91_BASE_SPI + SZ_16K - 1,
429                 .flags  = IORESOURCE_MEM,
430         },
431         [1] = {
432                 .start  = AT91_ID_SPI,
433                 .end    = AT91_ID_SPI,
434                 .flags  = IORESOURCE_IRQ,
435         },
436 };
437
438 static struct platform_device at91rm9200_spi_device = {
439         .name           = "at91_spi",
440         .id             = 0,
441         .dev            = {
442                 .dma_mask               = &spi_dmamask,
443                 .coherent_dma_mask      = 0xffffffff,
444         },
445         .resource       = at91_spi_resources,
446         .num_resources  = ARRAY_SIZE(at91_spi_resources),
447 };
448
449 static const unsigned at91_spi_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
450
451 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
452 {
453         int i;
454         unsigned long cs_pin;
455
456         at91_set_A_periph(AT91_PIN_PA0, 0);     /* MISO */
457         at91_set_A_periph(AT91_PIN_PA1, 0);     /* MOSI */
458         at91_set_A_periph(AT91_PIN_PA2, 0);     /* SPCK */
459
460         /* Enable SPI chip-selects */
461         for (i = 0; i < nr_devices; i++) {
462                 if (devices[i].controller_data)
463                         cs_pin = (unsigned long) devices[i].controller_data;
464                 else
465                         cs_pin = at91_spi_standard_cs[devices[i].chip_select];
466
467 #ifdef CONFIG_SPI_AT91_MANUAL_CS
468                 at91_set_gpio_output(cs_pin, 1);
469 #else
470                 at91_set_A_periph(cs_pin, 0);
471 #endif
472
473                 /* pass chip-select pin to driver */
474                 devices[i].controller_data = (void *) cs_pin;
475         }
476
477         spi_register_board_info(devices, nr_devices);
478         at91_clock_associate("spi0_clk", &at91rm9200_spi_device.dev, "spi");
479         platform_device_register(&at91rm9200_spi_device);
480 }
481 #else
482 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
483 #endif
484
485
486 /* --------------------------------------------------------------------
487  *  RTC
488  * -------------------------------------------------------------------- */
489
490 #if defined(CONFIG_RTC_DRV_AT91) || defined(CONFIG_RTC_DRV_AT91_MODULE)
491 static struct platform_device at91rm9200_rtc_device = {
492         .name           = "at91_rtc",
493         .id             = -1,
494         .num_resources  = 0,
495 };
496
497 static void __init at91_add_device_rtc(void)
498 {
499         platform_device_register(&at91rm9200_rtc_device);
500 }
501 #else
502 static void __init at91_add_device_rtc(void) {}
503 #endif
504
505
506 /* --------------------------------------------------------------------
507  *  Watchdog
508  * -------------------------------------------------------------------- */
509
510 #if defined(CONFIG_AT91_WATCHDOG) || defined(CONFIG_AT91_WATCHDOG_MODULE)
511 static struct platform_device at91rm9200_wdt_device = {
512         .name           = "at91_wdt",
513         .id             = -1,
514         .num_resources  = 0,
515 };
516
517 static void __init at91_add_device_watchdog(void)
518 {
519         platform_device_register(&at91rm9200_wdt_device);
520 }
521 #else
522 static void __init at91_add_device_watchdog(void) {}
523 #endif
524
525
526 /* --------------------------------------------------------------------
527  *  LEDs
528  * -------------------------------------------------------------------- */
529
530 #if defined(CONFIG_LEDS)
531 u8 at91_leds_cpu;
532 u8 at91_leds_timer;
533
534 void __init at91_init_leds(u8 cpu_led, u8 timer_led)
535 {
536         at91_leds_cpu   = cpu_led;
537         at91_leds_timer = timer_led;
538 }
539 #else
540 void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
541 #endif
542
543
544 /* --------------------------------------------------------------------
545  *  UART
546  * -------------------------------------------------------------------- */
547
548 #if defined(CONFIG_SERIAL_AT91)
549 static struct resource dbgu_resources[] = {
550         [0] = {
551                 .start  = AT91_VA_BASE_SYS + AT91_DBGU,
552                 .end    = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
553                 .flags  = IORESOURCE_MEM,
554         },
555         [1] = {
556                 .start  = AT91_ID_SYS,
557                 .end    = AT91_ID_SYS,
558                 .flags  = IORESOURCE_IRQ,
559         },
560 };
561
562 static struct at91_uart_data dbgu_data = {
563         .use_dma_tx     = 0,
564         .use_dma_rx     = 0,            /* DBGU not capable of receive DMA */
565 };
566
567 static struct platform_device at91rm9200_dbgu_device = {
568         .name           = "at91_usart",
569         .id             = 0,
570         .dev            = {
571                                 .platform_data  = &dbgu_data,
572                                 .coherent_dma_mask = 0xffffffff,
573         },
574         .resource       = dbgu_resources,
575         .num_resources  = ARRAY_SIZE(dbgu_resources),
576 };
577
578 static inline void configure_dbgu_pins(void)
579 {
580         at91_set_A_periph(AT91_PIN_PA30, 0);            /* DRXD */
581         at91_set_A_periph(AT91_PIN_PA31, 1);            /* DTXD */
582 }
583
584 static struct resource uart0_resources[] = {
585         [0] = {
586                 .start  = AT91_BASE_US0,
587                 .end    = AT91_BASE_US0 + SZ_16K - 1,
588                 .flags  = IORESOURCE_MEM,
589         },
590         [1] = {
591                 .start  = AT91_ID_US0,
592                 .end    = AT91_ID_US0,
593                 .flags  = IORESOURCE_IRQ,
594         },
595 };
596
597 static struct at91_uart_data uart0_data = {
598         .use_dma_tx     = 1,
599         .use_dma_rx     = 1,
600 };
601
602 static struct platform_device at91rm9200_uart0_device = {
603         .name           = "at91_usart",
604         .id             = 1,
605         .dev            = {
606                                 .platform_data  = &uart0_data,
607                                 .coherent_dma_mask = 0xffffffff,
608         },
609         .resource       = uart0_resources,
610         .num_resources  = ARRAY_SIZE(uart0_resources),
611 };
612
613 static inline void configure_usart0_pins(void)
614 {
615         at91_set_A_periph(AT91_PIN_PA17, 1);            /* TXD0 */
616         at91_set_A_periph(AT91_PIN_PA18, 0);            /* RXD0 */
617         at91_set_A_periph(AT91_PIN_PA20, 0);            /* CTS0 */
618
619         /*
620          * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
621          *  We need to drive the pin manually.  Default is off (RTS is active low).
622          */
623         at91_set_gpio_output(AT91_PIN_PA21, 1);
624 }
625
626 static struct resource uart1_resources[] = {
627         [0] = {
628                 .start  = AT91_BASE_US1,
629                 .end    = AT91_BASE_US1 + SZ_16K - 1,
630                 .flags  = IORESOURCE_MEM,
631         },
632         [1] = {
633                 .start  = AT91_ID_US1,
634                 .end    = AT91_ID_US1,
635                 .flags  = IORESOURCE_IRQ,
636         },
637 };
638
639 static struct at91_uart_data uart1_data = {
640         .use_dma_tx     = 1,
641         .use_dma_rx     = 1,
642 };
643
644 static struct platform_device at91rm9200_uart1_device = {
645         .name           = "at91_usart",
646         .id             = 2,
647         .dev            = {
648                                 .platform_data  = &uart1_data,
649                                 .coherent_dma_mask = 0xffffffff,
650         },
651         .resource       = uart1_resources,
652         .num_resources  = ARRAY_SIZE(uart1_resources),
653 };
654
655 static inline void configure_usart1_pins(void)
656 {
657         at91_set_A_periph(AT91_PIN_PB18, 0);            /* RI1 */
658         at91_set_A_periph(AT91_PIN_PB19, 0);            /* DTR1 */
659         at91_set_A_periph(AT91_PIN_PB20, 1);            /* TXD1 */
660         at91_set_A_periph(AT91_PIN_PB21, 0);            /* RXD1 */
661         at91_set_A_periph(AT91_PIN_PB23, 0);            /* DCD1 */
662         at91_set_A_periph(AT91_PIN_PB24, 0);            /* CTS1 */
663         at91_set_A_periph(AT91_PIN_PB25, 0);            /* DSR1 */
664         at91_set_A_periph(AT91_PIN_PB26, 0);            /* RTS1 */
665 }
666
667 static struct resource uart2_resources[] = {
668         [0] = {
669                 .start  = AT91_BASE_US2,
670                 .end    = AT91_BASE_US2 + SZ_16K - 1,
671                 .flags  = IORESOURCE_MEM,
672         },
673         [1] = {
674                 .start  = AT91_ID_US2,
675                 .end    = AT91_ID_US2,
676                 .flags  = IORESOURCE_IRQ,
677         },
678 };
679
680 static struct at91_uart_data uart2_data = {
681         .use_dma_tx     = 1,
682         .use_dma_rx     = 1,
683 };
684
685 static struct platform_device at91rm9200_uart2_device = {
686         .name           = "at91_usart",
687         .id             = 3,
688         .dev            = {
689                                 .platform_data  = &uart2_data,
690                                 .coherent_dma_mask = 0xffffffff,
691         },
692         .resource       = uart2_resources,
693         .num_resources  = ARRAY_SIZE(uart2_resources),
694 };
695
696 static inline void configure_usart2_pins(void)
697 {
698         at91_set_A_periph(AT91_PIN_PA22, 0);            /* RXD2 */
699         at91_set_A_periph(AT91_PIN_PA23, 1);            /* TXD2 */
700 }
701
702 static struct resource uart3_resources[] = {
703         [0] = {
704                 .start  = AT91_BASE_US3,
705                 .end    = AT91_BASE_US3 + SZ_16K - 1,
706                 .flags  = IORESOURCE_MEM,
707         },
708         [1] = {
709                 .start  = AT91_ID_US3,
710                 .end    = AT91_ID_US3,
711                 .flags  = IORESOURCE_IRQ,
712         },
713 };
714
715 static struct at91_uart_data uart3_data = {
716         .use_dma_tx     = 1,
717         .use_dma_rx     = 1,
718 };
719
720 static struct platform_device at91rm9200_uart3_device = {
721         .name           = "at91_usart",
722         .id             = 4,
723         .dev            = {
724                                 .platform_data  = &uart3_data,
725                                 .coherent_dma_mask = 0xffffffff,
726         },
727         .resource       = uart3_resources,
728         .num_resources  = ARRAY_SIZE(uart3_resources),
729 };
730
731 static inline void configure_usart3_pins(void)
732 {
733         at91_set_B_periph(AT91_PIN_PA5, 1);             /* TXD3 */
734         at91_set_B_periph(AT91_PIN_PA6, 0);             /* RXD3 */
735 }
736
737 struct platform_device *at91_uarts[AT91_NR_UART];       /* the UARTs to use */
738 struct platform_device *at91_default_console_device;    /* the serial console device */
739
740 void __init at91_init_serial(struct at91_uart_config *config)
741 {
742         int i;
743
744         /* Fill in list of supported UARTs */
745         for (i = 0; i < config->nr_tty; i++) {
746                 switch (config->tty_map[i]) {
747                         case 0:
748                                 configure_usart0_pins();
749                                 at91_uarts[i] = &at91rm9200_uart0_device;
750                                 at91_clock_associate("usart0_clk", &at91rm9200_uart0_device.dev, "usart");
751                                 break;
752                         case 1:
753                                 configure_usart1_pins();
754                                 at91_uarts[i] = &at91rm9200_uart1_device;
755                                 at91_clock_associate("usart1_clk", &at91rm9200_uart1_device.dev, "usart");
756                                 break;
757                         case 2:
758                                 configure_usart2_pins();
759                                 at91_uarts[i] = &at91rm9200_uart2_device;
760                                 at91_clock_associate("usart2_clk", &at91rm9200_uart2_device.dev, "usart");
761                                 break;
762                         case 3:
763                                 configure_usart3_pins();
764                                 at91_uarts[i] = &at91rm9200_uart3_device;
765                                 at91_clock_associate("usart3_clk", &at91rm9200_uart3_device.dev, "usart");
766                                 break;
767                         case 4:
768                                 configure_dbgu_pins();
769                                 at91_uarts[i] = &at91rm9200_dbgu_device;
770                                 at91_clock_associate("mck", &at91rm9200_dbgu_device.dev, "usart");
771                                 break;
772                         default:
773                                 continue;
774                 }
775                 at91_uarts[i]->id = i;          /* update ID number to mapped ID */
776         }
777
778         /* Set serial console device */
779         if (config->console_tty < AT91_NR_UART)
780                 at91_default_console_device = at91_uarts[config->console_tty];
781         if (!at91_default_console_device)
782                 printk(KERN_INFO "AT91: No default serial console defined.\n");
783 }
784
785 void __init at91_add_device_serial(void)
786 {
787         int i;
788
789         for (i = 0; i < AT91_NR_UART; i++) {
790                 if (at91_uarts[i])
791                         platform_device_register(at91_uarts[i]);
792         }
793 }
794 #else
795 void __init at91_init_serial(struct at91_uart_config *config) {}
796 void __init at91_add_device_serial(void) {}
797 #endif
798
799
800 /* -------------------------------------------------------------------- */
801
802 /*
803  * These devices are always present and don't need any board-specific
804  * setup.
805  */
806 static int __init at91_add_standard_devices(void)
807 {
808         at91_add_device_rtc();
809         at91_add_device_watchdog();
810         return 0;
811 }
812
813 arch_initcall(at91_add_standard_devices);