Merge master.kernel.org:/pub/scm/linux/kernel/git/sfrench/cifs-2.6
[linux-2.6] / arch / arm / mach-at91 / at91rm9200_devices.c
1 /*
2  * arch/arm/mach-at91/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/platform_device.h>
17
18 #include <asm/arch/board.h>
19 #include <asm/arch/gpio.h>
20 #include <asm/arch/at91rm9200.h>
21 #include <asm/arch/at91rm9200_mc.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 usbh_resources[] = {
38         [0] = {
39                 .start  = AT91RM9200_UHP_BASE,
40                 .end    = AT91RM9200_UHP_BASE + SZ_1M - 1,
41                 .flags  = IORESOURCE_MEM,
42         },
43         [1] = {
44                 .start  = AT91RM9200_ID_UHP,
45                 .end    = AT91RM9200_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       = usbh_resources,
59         .num_resources  = ARRAY_SIZE(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 udc_resources[] = {
83         [0] = {
84                 .start  = AT91RM9200_BASE_UDP,
85                 .end    = AT91RM9200_BASE_UDP + SZ_16K - 1,
86                 .flags  = IORESOURCE_MEM,
87         },
88         [1] = {
89                 .start  = AT91RM9200_ID_UDP,
90                 .end    = AT91RM9200_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       = udc_resources,
102         .num_resources  = ARRAY_SIZE(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 eth_resources[] = {
134         [0] = {
135                 .start  = AT91_VA_BASE_EMAC,
136                 .end    = AT91_VA_BASE_EMAC + SZ_16K - 1,
137                 .flags  = IORESOURCE_MEM,
138         },
139         [1] = {
140                 .start  = AT91RM9200_ID_EMAC,
141                 .end    = AT91RM9200_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       = eth_resources,
155         .num_resources  = ARRAY_SIZE(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 #define CF_BASE         AT91_CHIPSELECT_4
207
208 static struct resource cf_resources[] = {
209         [0] = {
210                 .start  = CF_BASE,
211                 /* ties up CS4, CS5 and CS6 */
212                 .end    = CF_BASE + (0x30000000 - 1),
213                 .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8AND16BIT,
214         },
215 };
216
217 static struct platform_device at91rm9200_cf_device = {
218         .name           = "at91_cf",
219         .id             = -1,
220         .dev            = {
221                                 .platform_data          = &cf_data,
222         },
223         .resource       = cf_resources,
224         .num_resources  = ARRAY_SIZE(cf_resources),
225 };
226
227 void __init at91_add_device_cf(struct at91_cf_data *data)
228 {
229         unsigned int csa;
230
231         if (!data)
232                 return;
233
234         data->chipselect = 4;           /* can only use EBI ChipSelect 4 */
235
236         /* CF takes over CS4, CS5, CS6 */
237         csa = at91_sys_read(AT91_EBI_CSA);
238         at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS4A_SMC_COMPACTFLASH);
239
240         /*
241          * Static memory controller timing adjustments.
242          * REVISIT:  these timings are in terms of MCK cycles, so
243          * when MCK changes (cpufreq etc) so must these values...
244          */
245         at91_sys_write(AT91_SMC_CSR(4),
246                                   AT91_SMC_ACSS_STD
247                                 | AT91_SMC_DBW_16
248                                 | AT91_SMC_BAT
249                                 | AT91_SMC_WSEN
250                                 | AT91_SMC_NWS_(32)     /* wait states */
251                                 | AT91_SMC_RWSETUP_(6)  /* setup time */
252                                 | AT91_SMC_RWHOLD_(4)   /* hold time */
253         );
254
255         /* input/irq */
256         if (data->irq_pin) {
257                 at91_set_gpio_input(data->irq_pin, 1);
258                 at91_set_deglitch(data->irq_pin, 1);
259         }
260         at91_set_gpio_input(data->det_pin, 1);
261         at91_set_deglitch(data->det_pin, 1);
262
263         /* outputs, initially off */
264         if (data->vcc_pin)
265                 at91_set_gpio_output(data->vcc_pin, 0);
266         at91_set_gpio_output(data->rst_pin, 0);
267
268         /* force poweron defaults for these pins ... */
269         at91_set_A_periph(AT91_PIN_PC9, 0);     /* A25/CFRNW */
270         at91_set_A_periph(AT91_PIN_PC10, 0);    /* NCS4/CFCS */
271         at91_set_A_periph(AT91_PIN_PC11, 0);    /* NCS5/CFCE1 */
272         at91_set_A_periph(AT91_PIN_PC12, 0);    /* NCS6/CFCE2 */
273
274         /* nWAIT is _not_ a default setting */
275         at91_set_A_periph(AT91_PIN_PC6, 1);     /* nWAIT */
276
277         cf_data = *data;
278         platform_device_register(&at91rm9200_cf_device);
279 }
280 #else
281 void __init at91_add_device_cf(struct at91_cf_data *data) {}
282 #endif
283
284
285 /* --------------------------------------------------------------------
286  *  MMC / SD
287  * -------------------------------------------------------------------- */
288
289 #if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
290 static u64 mmc_dmamask = 0xffffffffUL;
291 static struct at91_mmc_data mmc_data;
292
293 static struct resource mmc_resources[] = {
294         [0] = {
295                 .start  = AT91RM9200_BASE_MCI,
296                 .end    = AT91RM9200_BASE_MCI + SZ_16K - 1,
297                 .flags  = IORESOURCE_MEM,
298         },
299         [1] = {
300                 .start  = AT91RM9200_ID_MCI,
301                 .end    = AT91RM9200_ID_MCI,
302                 .flags  = IORESOURCE_IRQ,
303         },
304 };
305
306 static struct platform_device at91rm9200_mmc_device = {
307         .name           = "at91_mci",
308         .id             = -1,
309         .dev            = {
310                                 .dma_mask               = &mmc_dmamask,
311                                 .coherent_dma_mask      = 0xffffffff,
312                                 .platform_data          = &mmc_data,
313         },
314         .resource       = mmc_resources,
315         .num_resources  = ARRAY_SIZE(mmc_resources),
316 };
317
318 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
319 {
320         if (!data)
321                 return;
322
323         /* input/irq */
324         if (data->det_pin) {
325                 at91_set_gpio_input(data->det_pin, 1);
326                 at91_set_deglitch(data->det_pin, 1);
327         }
328         if (data->wp_pin)
329                 at91_set_gpio_input(data->wp_pin, 1);
330         if (data->vcc_pin)
331                 at91_set_gpio_output(data->vcc_pin, 0);
332
333         /* CLK */
334         at91_set_A_periph(AT91_PIN_PA27, 0);
335
336         if (data->slot_b) {
337                 /* CMD */
338                 at91_set_B_periph(AT91_PIN_PA8, 1);
339
340                 /* DAT0, maybe DAT1..DAT3 */
341                 at91_set_B_periph(AT91_PIN_PA9, 1);
342                 if (data->wire4) {
343                         at91_set_B_periph(AT91_PIN_PA10, 1);
344                         at91_set_B_periph(AT91_PIN_PA11, 1);
345                         at91_set_B_periph(AT91_PIN_PA12, 1);
346                 }
347         } else {
348                 /* CMD */
349                 at91_set_A_periph(AT91_PIN_PA28, 1);
350
351                 /* DAT0, maybe DAT1..DAT3 */
352                 at91_set_A_periph(AT91_PIN_PA29, 1);
353                 if (data->wire4) {
354                         at91_set_B_periph(AT91_PIN_PB3, 1);
355                         at91_set_B_periph(AT91_PIN_PB4, 1);
356                         at91_set_B_periph(AT91_PIN_PB5, 1);
357                 }
358         }
359
360         mmc_data = *data;
361         platform_device_register(&at91rm9200_mmc_device);
362 }
363 #else
364 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
365 #endif
366
367
368 /* --------------------------------------------------------------------
369  *  NAND / SmartMedia
370  * -------------------------------------------------------------------- */
371
372 #if defined(CONFIG_MTD_NAND_AT91) || defined(CONFIG_MTD_NAND_AT91_MODULE)
373 static struct at91_nand_data nand_data;
374
375 #define NAND_BASE       AT91_CHIPSELECT_3
376
377 static struct resource nand_resources[] = {
378         {
379                 .start  = NAND_BASE,
380                 .end    = NAND_BASE + SZ_8M - 1,
381                 .flags  = IORESOURCE_MEM,
382         }
383 };
384
385 static struct platform_device at91rm9200_nand_device = {
386         .name           = "at91_nand",
387         .id             = -1,
388         .dev            = {
389                                 .platform_data  = &nand_data,
390         },
391         .resource       = nand_resources,
392         .num_resources  = ARRAY_SIZE(nand_resources),
393 };
394
395 void __init at91_add_device_nand(struct at91_nand_data *data)
396 {
397         unsigned int csa;
398
399         if (!data)
400                 return;
401
402         /* enable the address range of CS3 */
403         csa = at91_sys_read(AT91_EBI_CSA);
404         at91_sys_write(AT91_EBI_CSA, csa | AT91_EBI_CS3A_SMC_SMARTMEDIA);
405
406         /* set the bus interface characteristics */
407         at91_sys_write(AT91_SMC_CSR(3), AT91_SMC_ACSS_STD | AT91_SMC_DBW_8 | AT91_SMC_WSEN
408                 | AT91_SMC_NWS_(5)
409                 | AT91_SMC_TDF_(1)
410                 | AT91_SMC_RWSETUP_(0)  /* tDS Data Set up Time 30 - ns */
411                 | AT91_SMC_RWHOLD_(1)   /* tDH Data Hold Time 20 - ns */
412         );
413
414         /* enable pin */
415         if (data->enable_pin)
416                 at91_set_gpio_output(data->enable_pin, 1);
417
418         /* ready/busy pin */
419         if (data->rdy_pin)
420                 at91_set_gpio_input(data->rdy_pin, 1);
421
422         /* card detect pin */
423         if (data->det_pin)
424                 at91_set_gpio_input(data->det_pin, 1);
425
426         at91_set_A_periph(AT91_PIN_PC1, 0);             /* SMOE */
427         at91_set_A_periph(AT91_PIN_PC3, 0);             /* SMWE */
428
429         nand_data = *data;
430         platform_device_register(&at91rm9200_nand_device);
431 }
432 #else
433 void __init at91_add_device_nand(struct at91_nand_data *data) {}
434 #endif
435
436
437 /* --------------------------------------------------------------------
438  *  TWI (i2c)
439  * -------------------------------------------------------------------- */
440
441 #if defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
442
443 static struct resource twi_resources[] = {
444         [0] = {
445                 .start  = AT91RM9200_BASE_TWI,
446                 .end    = AT91RM9200_BASE_TWI + SZ_16K - 1,
447                 .flags  = IORESOURCE_MEM,
448         },
449         [1] = {
450                 .start  = AT91RM9200_ID_TWI,
451                 .end    = AT91RM9200_ID_TWI,
452                 .flags  = IORESOURCE_IRQ,
453         },
454 };
455
456 static struct platform_device at91rm9200_twi_device = {
457         .name           = "at91_i2c",
458         .id             = -1,
459         .resource       = twi_resources,
460         .num_resources  = ARRAY_SIZE(twi_resources),
461 };
462
463 void __init at91_add_device_i2c(void)
464 {
465         /* pins used for TWI interface */
466         at91_set_A_periph(AT91_PIN_PA25, 0);            /* TWD */
467         at91_set_multi_drive(AT91_PIN_PA25, 1);
468
469         at91_set_A_periph(AT91_PIN_PA26, 0);            /* TWCK */
470         at91_set_multi_drive(AT91_PIN_PA26, 1);
471
472         platform_device_register(&at91rm9200_twi_device);
473 }
474 #else
475 void __init at91_add_device_i2c(void) {}
476 #endif
477
478
479 /* --------------------------------------------------------------------
480  *  SPI
481  * -------------------------------------------------------------------- */
482
483 #if defined(CONFIG_SPI_AT91) || defined(CONFIG_SPI_AT91_MODULE) || defined(CONFIG_AT91_SPI) || defined(CONFIG_AT91_SPI_MODULE)
484 static u64 spi_dmamask = 0xffffffffUL;
485
486 static struct resource spi_resources[] = {
487         [0] = {
488                 .start  = AT91RM9200_BASE_SPI,
489                 .end    = AT91RM9200_BASE_SPI + SZ_16K - 1,
490                 .flags  = IORESOURCE_MEM,
491         },
492         [1] = {
493                 .start  = AT91RM9200_ID_SPI,
494                 .end    = AT91RM9200_ID_SPI,
495                 .flags  = IORESOURCE_IRQ,
496         },
497 };
498
499 static struct platform_device at91rm9200_spi_device = {
500         .name           = "at91_spi",
501         .id             = 0,
502         .dev            = {
503                                 .dma_mask               = &spi_dmamask,
504                                 .coherent_dma_mask      = 0xffffffff,
505         },
506         .resource       = spi_resources,
507         .num_resources  = ARRAY_SIZE(spi_resources),
508 };
509
510 static const unsigned spi_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
511
512 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
513 {
514         int i;
515         unsigned long cs_pin;
516
517         at91_set_A_periph(AT91_PIN_PA0, 0);     /* MISO */
518         at91_set_A_periph(AT91_PIN_PA1, 0);     /* MOSI */
519         at91_set_A_periph(AT91_PIN_PA2, 0);     /* SPCK */
520
521         /* Enable SPI chip-selects */
522         for (i = 0; i < nr_devices; i++) {
523                 if (devices[i].controller_data)
524                         cs_pin = (unsigned long) devices[i].controller_data;
525                 else
526                         cs_pin = spi_standard_cs[devices[i].chip_select];
527
528 #ifdef CONFIG_SPI_AT91_MANUAL_CS
529                 at91_set_gpio_output(cs_pin, 1);
530 #else
531                 at91_set_A_periph(cs_pin, 0);
532 #endif
533
534                 /* pass chip-select pin to driver */
535                 devices[i].controller_data = (void *) cs_pin;
536         }
537
538         spi_register_board_info(devices, nr_devices);
539         at91_clock_associate("spi_clk", &at91rm9200_spi_device.dev, "spi");
540         platform_device_register(&at91rm9200_spi_device);
541 }
542 #else
543 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
544 #endif
545
546
547 /* --------------------------------------------------------------------
548  *  RTC
549  * -------------------------------------------------------------------- */
550
551 #if defined(CONFIG_RTC_DRV_AT91RM9200) || defined(CONFIG_RTC_DRV_AT91RM9200_MODULE)
552 static struct platform_device at91rm9200_rtc_device = {
553         .name           = "at91_rtc",
554         .id             = -1,
555         .num_resources  = 0,
556 };
557
558 static void __init at91_add_device_rtc(void)
559 {
560         platform_device_register(&at91rm9200_rtc_device);
561 }
562 #else
563 static void __init at91_add_device_rtc(void) {}
564 #endif
565
566
567 /* --------------------------------------------------------------------
568  *  Watchdog
569  * -------------------------------------------------------------------- */
570
571 #if defined(CONFIG_AT91RM9200_WATCHDOG) || defined(CONFIG_AT91RM9200_WATCHDOG_MODULE)
572 static struct platform_device at91rm9200_wdt_device = {
573         .name           = "at91_wdt",
574         .id             = -1,
575         .num_resources  = 0,
576 };
577
578 static void __init at91_add_device_watchdog(void)
579 {
580         platform_device_register(&at91rm9200_wdt_device);
581 }
582 #else
583 static void __init at91_add_device_watchdog(void) {}
584 #endif
585
586
587 /* --------------------------------------------------------------------
588  *  LEDs
589  * -------------------------------------------------------------------- */
590
591 #if defined(CONFIG_LEDS)
592 u8 at91_leds_cpu;
593 u8 at91_leds_timer;
594
595 void __init at91_init_leds(u8 cpu_led, u8 timer_led)
596 {
597         /* Enable GPIO to access the LEDs */
598         at91_set_gpio_output(cpu_led, 1);
599         at91_set_gpio_output(timer_led, 1);
600
601         at91_leds_cpu   = cpu_led;
602         at91_leds_timer = timer_led;
603 }
604 #else
605 void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
606 #endif
607
608
609 /* --------------------------------------------------------------------
610  *  UART
611  * -------------------------------------------------------------------- */
612
613 #if defined(CONFIG_SERIAL_ATMEL)
614 static struct resource dbgu_resources[] = {
615         [0] = {
616                 .start  = AT91_VA_BASE_SYS + AT91_DBGU,
617                 .end    = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
618                 .flags  = IORESOURCE_MEM,
619         },
620         [1] = {
621                 .start  = AT91_ID_SYS,
622                 .end    = AT91_ID_SYS,
623                 .flags  = IORESOURCE_IRQ,
624         },
625 };
626
627 static struct atmel_uart_data dbgu_data = {
628         .use_dma_tx     = 0,
629         .use_dma_rx     = 0,            /* DBGU not capable of receive DMA */
630         .regs           = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
631 };
632
633 static struct platform_device at91rm9200_dbgu_device = {
634         .name           = "atmel_usart",
635         .id             = 0,
636         .dev            = {
637                                 .platform_data  = &dbgu_data,
638                                 .coherent_dma_mask = 0xffffffff,
639         },
640         .resource       = dbgu_resources,
641         .num_resources  = ARRAY_SIZE(dbgu_resources),
642 };
643
644 static inline void configure_dbgu_pins(void)
645 {
646         at91_set_A_periph(AT91_PIN_PA30, 0);            /* DRXD */
647         at91_set_A_periph(AT91_PIN_PA31, 1);            /* DTXD */
648 }
649
650 static struct resource uart0_resources[] = {
651         [0] = {
652                 .start  = AT91RM9200_BASE_US0,
653                 .end    = AT91RM9200_BASE_US0 + SZ_16K - 1,
654                 .flags  = IORESOURCE_MEM,
655         },
656         [1] = {
657                 .start  = AT91RM9200_ID_US0,
658                 .end    = AT91RM9200_ID_US0,
659                 .flags  = IORESOURCE_IRQ,
660         },
661 };
662
663 static struct atmel_uart_data uart0_data = {
664         .use_dma_tx     = 1,
665         .use_dma_rx     = 1,
666 };
667
668 static struct platform_device at91rm9200_uart0_device = {
669         .name           = "atmel_usart",
670         .id             = 1,
671         .dev            = {
672                                 .platform_data  = &uart0_data,
673                                 .coherent_dma_mask = 0xffffffff,
674         },
675         .resource       = uart0_resources,
676         .num_resources  = ARRAY_SIZE(uart0_resources),
677 };
678
679 static inline void configure_usart0_pins(void)
680 {
681         at91_set_A_periph(AT91_PIN_PA17, 1);            /* TXD0 */
682         at91_set_A_periph(AT91_PIN_PA18, 0);            /* RXD0 */
683         at91_set_A_periph(AT91_PIN_PA20, 0);            /* CTS0 */
684
685         /*
686          * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
687          *  We need to drive the pin manually.  Default is off (RTS is active low).
688          */
689         at91_set_gpio_output(AT91_PIN_PA21, 1);
690 }
691
692 static struct resource uart1_resources[] = {
693         [0] = {
694                 .start  = AT91RM9200_BASE_US1,
695                 .end    = AT91RM9200_BASE_US1 + SZ_16K - 1,
696                 .flags  = IORESOURCE_MEM,
697         },
698         [1] = {
699                 .start  = AT91RM9200_ID_US1,
700                 .end    = AT91RM9200_ID_US1,
701                 .flags  = IORESOURCE_IRQ,
702         },
703 };
704
705 static struct atmel_uart_data uart1_data = {
706         .use_dma_tx     = 1,
707         .use_dma_rx     = 1,
708 };
709
710 static struct platform_device at91rm9200_uart1_device = {
711         .name           = "atmel_usart",
712         .id             = 2,
713         .dev            = {
714                                 .platform_data  = &uart1_data,
715                                 .coherent_dma_mask = 0xffffffff,
716         },
717         .resource       = uart1_resources,
718         .num_resources  = ARRAY_SIZE(uart1_resources),
719 };
720
721 static inline void configure_usart1_pins(void)
722 {
723         at91_set_A_periph(AT91_PIN_PB18, 0);            /* RI1 */
724         at91_set_A_periph(AT91_PIN_PB19, 0);            /* DTR1 */
725         at91_set_A_periph(AT91_PIN_PB20, 1);            /* TXD1 */
726         at91_set_A_periph(AT91_PIN_PB21, 0);            /* RXD1 */
727         at91_set_A_periph(AT91_PIN_PB23, 0);            /* DCD1 */
728         at91_set_A_periph(AT91_PIN_PB24, 0);            /* CTS1 */
729         at91_set_A_periph(AT91_PIN_PB25, 0);            /* DSR1 */
730         at91_set_A_periph(AT91_PIN_PB26, 0);            /* RTS1 */
731 }
732
733 static struct resource uart2_resources[] = {
734         [0] = {
735                 .start  = AT91RM9200_BASE_US2,
736                 .end    = AT91RM9200_BASE_US2 + SZ_16K - 1,
737                 .flags  = IORESOURCE_MEM,
738         },
739         [1] = {
740                 .start  = AT91RM9200_ID_US2,
741                 .end    = AT91RM9200_ID_US2,
742                 .flags  = IORESOURCE_IRQ,
743         },
744 };
745
746 static struct atmel_uart_data uart2_data = {
747         .use_dma_tx     = 1,
748         .use_dma_rx     = 1,
749 };
750
751 static struct platform_device at91rm9200_uart2_device = {
752         .name           = "atmel_usart",
753         .id             = 3,
754         .dev            = {
755                                 .platform_data  = &uart2_data,
756                                 .coherent_dma_mask = 0xffffffff,
757         },
758         .resource       = uart2_resources,
759         .num_resources  = ARRAY_SIZE(uart2_resources),
760 };
761
762 static inline void configure_usart2_pins(void)
763 {
764         at91_set_A_periph(AT91_PIN_PA22, 0);            /* RXD2 */
765         at91_set_A_periph(AT91_PIN_PA23, 1);            /* TXD2 */
766 }
767
768 static struct resource uart3_resources[] = {
769         [0] = {
770                 .start  = AT91RM9200_BASE_US3,
771                 .end    = AT91RM9200_BASE_US3 + SZ_16K - 1,
772                 .flags  = IORESOURCE_MEM,
773         },
774         [1] = {
775                 .start  = AT91RM9200_ID_US3,
776                 .end    = AT91RM9200_ID_US3,
777                 .flags  = IORESOURCE_IRQ,
778         },
779 };
780
781 static struct atmel_uart_data uart3_data = {
782         .use_dma_tx     = 1,
783         .use_dma_rx     = 1,
784 };
785
786 static struct platform_device at91rm9200_uart3_device = {
787         .name           = "atmel_usart",
788         .id             = 4,
789         .dev            = {
790                                 .platform_data  = &uart3_data,
791                                 .coherent_dma_mask = 0xffffffff,
792         },
793         .resource       = uart3_resources,
794         .num_resources  = ARRAY_SIZE(uart3_resources),
795 };
796
797 static inline void configure_usart3_pins(void)
798 {
799         at91_set_B_periph(AT91_PIN_PA5, 1);             /* TXD3 */
800         at91_set_B_periph(AT91_PIN_PA6, 0);             /* RXD3 */
801 }
802
803 struct platform_device *at91_uarts[ATMEL_MAX_UART];     /* the UARTs to use */
804 struct platform_device *atmel_default_console_device;   /* the serial console device */
805
806 void __init at91_init_serial(struct at91_uart_config *config)
807 {
808         int i;
809
810         /* Fill in list of supported UARTs */
811         for (i = 0; i < config->nr_tty; i++) {
812                 switch (config->tty_map[i]) {
813                         case 0:
814                                 configure_usart0_pins();
815                                 at91_uarts[i] = &at91rm9200_uart0_device;
816                                 at91_clock_associate("usart0_clk", &at91rm9200_uart0_device.dev, "usart");
817                                 break;
818                         case 1:
819                                 configure_usart1_pins();
820                                 at91_uarts[i] = &at91rm9200_uart1_device;
821                                 at91_clock_associate("usart1_clk", &at91rm9200_uart1_device.dev, "usart");
822                                 break;
823                         case 2:
824                                 configure_usart2_pins();
825                                 at91_uarts[i] = &at91rm9200_uart2_device;
826                                 at91_clock_associate("usart2_clk", &at91rm9200_uart2_device.dev, "usart");
827                                 break;
828                         case 3:
829                                 configure_usart3_pins();
830                                 at91_uarts[i] = &at91rm9200_uart3_device;
831                                 at91_clock_associate("usart3_clk", &at91rm9200_uart3_device.dev, "usart");
832                                 break;
833                         case 4:
834                                 configure_dbgu_pins();
835                                 at91_uarts[i] = &at91rm9200_dbgu_device;
836                                 at91_clock_associate("mck", &at91rm9200_dbgu_device.dev, "usart");
837                                 break;
838                         default:
839                                 continue;
840                 }
841                 at91_uarts[i]->id = i;          /* update ID number to mapped ID */
842         }
843
844         /* Set serial console device */
845         if (config->console_tty < ATMEL_MAX_UART)
846                 atmel_default_console_device = at91_uarts[config->console_tty];
847         if (!atmel_default_console_device)
848                 printk(KERN_INFO "AT91: No default serial console defined.\n");
849 }
850
851 void __init at91_add_device_serial(void)
852 {
853         int i;
854
855         for (i = 0; i < ATMEL_MAX_UART; i++) {
856                 if (at91_uarts[i])
857                         platform_device_register(at91_uarts[i]);
858         }
859 }
860 #else
861 void __init at91_init_serial(struct at91_uart_config *config) {}
862 void __init at91_add_device_serial(void) {}
863 #endif
864
865
866 /* -------------------------------------------------------------------- */
867
868 /*
869  * These devices are always present and don't need any board-specific
870  * setup.
871  */
872 static int __init at91_add_standard_devices(void)
873 {
874         at91_add_device_rtc();
875         at91_add_device_watchdog();
876         return 0;
877 }
878
879 arch_initcall(at91_add_standard_devices);