Merge git://git.infradead.org/mtd-2.6
[linux-2.6] / arch / arm / mach-at91 / at91sam9261_devices.c
1 /*
2  * arch/arm/mach-at91/at91sam9261_devices.c
3  *
4  *  Copyright (C) 2005 Thibaut VARENE <varenet@parisc-linux.org>
5  *  Copyright (C) 2005 David Brownell
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  */
13 #include <asm/mach/arch.h>
14 #include <asm/mach/map.h>
15
16 #include <linux/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(short mmc_id, 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(short mmc_id, 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_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
434 static u64 lcdc_dmamask = 0xffffffffUL;
435 static struct atmel_lcdfb_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           = "atmel_lcdfb",
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 atmel_lcdfb_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 atmel_lcdfb_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         /* Enable GPIO to access the LEDs */
517         at91_set_gpio_output(cpu_led, 1);
518         at91_set_gpio_output(timer_led, 1);
519
520         at91_leds_cpu   = cpu_led;
521         at91_leds_timer = timer_led;
522 }
523 #else
524 void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
525 #endif
526
527
528 /* --------------------------------------------------------------------
529  *  UART
530  * -------------------------------------------------------------------- */
531
532 #if defined(CONFIG_SERIAL_ATMEL)
533 static struct resource dbgu_resources[] = {
534         [0] = {
535                 .start  = AT91_VA_BASE_SYS + AT91_DBGU,
536                 .end    = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
537                 .flags  = IORESOURCE_MEM,
538         },
539         [1] = {
540                 .start  = AT91_ID_SYS,
541                 .end    = AT91_ID_SYS,
542                 .flags  = IORESOURCE_IRQ,
543         },
544 };
545
546 static struct atmel_uart_data dbgu_data = {
547         .use_dma_tx     = 0,
548         .use_dma_rx     = 0,            /* DBGU not capable of receive DMA */
549         .regs           = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
550 };
551
552 static struct platform_device at91sam9261_dbgu_device = {
553         .name           = "atmel_usart",
554         .id             = 0,
555         .dev            = {
556                                 .platform_data  = &dbgu_data,
557                                 .coherent_dma_mask = 0xffffffff,
558         },
559         .resource       = dbgu_resources,
560         .num_resources  = ARRAY_SIZE(dbgu_resources),
561 };
562
563 static inline void configure_dbgu_pins(void)
564 {
565         at91_set_A_periph(AT91_PIN_PA9, 0);             /* DRXD */
566         at91_set_A_periph(AT91_PIN_PA10, 1);            /* DTXD */
567 }
568
569 static struct resource uart0_resources[] = {
570         [0] = {
571                 .start  = AT91SAM9261_BASE_US0,
572                 .end    = AT91SAM9261_BASE_US0 + SZ_16K - 1,
573                 .flags  = IORESOURCE_MEM,
574         },
575         [1] = {
576                 .start  = AT91SAM9261_ID_US0,
577                 .end    = AT91SAM9261_ID_US0,
578                 .flags  = IORESOURCE_IRQ,
579         },
580 };
581
582 static struct atmel_uart_data uart0_data = {
583         .use_dma_tx     = 1,
584         .use_dma_rx     = 1,
585 };
586
587 static struct platform_device at91sam9261_uart0_device = {
588         .name           = "atmel_usart",
589         .id             = 1,
590         .dev            = {
591                                 .platform_data  = &uart0_data,
592                                 .coherent_dma_mask = 0xffffffff,
593         },
594         .resource       = uart0_resources,
595         .num_resources  = ARRAY_SIZE(uart0_resources),
596 };
597
598 static inline void configure_usart0_pins(void)
599 {
600         at91_set_A_periph(AT91_PIN_PC8, 1);             /* TXD0 */
601         at91_set_A_periph(AT91_PIN_PC9, 0);             /* RXD0 */
602         at91_set_A_periph(AT91_PIN_PC10, 0);            /* RTS0 */
603         at91_set_A_periph(AT91_PIN_PC11, 0);            /* CTS0 */
604 }
605
606 static struct resource uart1_resources[] = {
607         [0] = {
608                 .start  = AT91SAM9261_BASE_US1,
609                 .end    = AT91SAM9261_BASE_US1 + SZ_16K - 1,
610                 .flags  = IORESOURCE_MEM,
611         },
612         [1] = {
613                 .start  = AT91SAM9261_ID_US1,
614                 .end    = AT91SAM9261_ID_US1,
615                 .flags  = IORESOURCE_IRQ,
616         },
617 };
618
619 static struct atmel_uart_data uart1_data = {
620         .use_dma_tx     = 1,
621         .use_dma_rx     = 1,
622 };
623
624 static struct platform_device at91sam9261_uart1_device = {
625         .name           = "atmel_usart",
626         .id             = 2,
627         .dev            = {
628                                 .platform_data  = &uart1_data,
629                                 .coherent_dma_mask = 0xffffffff,
630         },
631         .resource       = uart1_resources,
632         .num_resources  = ARRAY_SIZE(uart1_resources),
633 };
634
635 static inline void configure_usart1_pins(void)
636 {
637         at91_set_A_periph(AT91_PIN_PC12, 1);            /* TXD1 */
638         at91_set_A_periph(AT91_PIN_PC13, 0);            /* RXD1 */
639 }
640
641 static struct resource uart2_resources[] = {
642         [0] = {
643                 .start  = AT91SAM9261_BASE_US2,
644                 .end    = AT91SAM9261_BASE_US2 + SZ_16K - 1,
645                 .flags  = IORESOURCE_MEM,
646         },
647         [1] = {
648                 .start  = AT91SAM9261_ID_US2,
649                 .end    = AT91SAM9261_ID_US2,
650                 .flags  = IORESOURCE_IRQ,
651         },
652 };
653
654 static struct atmel_uart_data uart2_data = {
655         .use_dma_tx     = 1,
656         .use_dma_rx     = 1,
657 };
658
659 static struct platform_device at91sam9261_uart2_device = {
660         .name           = "atmel_usart",
661         .id             = 3,
662         .dev            = {
663                                 .platform_data  = &uart2_data,
664                                 .coherent_dma_mask = 0xffffffff,
665         },
666         .resource       = uart2_resources,
667         .num_resources  = ARRAY_SIZE(uart2_resources),
668 };
669
670 static inline void configure_usart2_pins(void)
671 {
672         at91_set_A_periph(AT91_PIN_PC15, 0);            /* RXD2 */
673         at91_set_A_periph(AT91_PIN_PC14, 1);            /* TXD2 */
674 }
675
676 struct platform_device *at91_uarts[ATMEL_MAX_UART];     /* the UARTs to use */
677 struct platform_device *atmel_default_console_device;   /* the serial console device */
678
679 void __init at91_init_serial(struct at91_uart_config *config)
680 {
681         int i;
682
683         /* Fill in list of supported UARTs */
684         for (i = 0; i < config->nr_tty; i++) {
685                 switch (config->tty_map[i]) {
686                         case 0:
687                                 configure_usart0_pins();
688                                 at91_uarts[i] = &at91sam9261_uart0_device;
689                                 at91_clock_associate("usart0_clk", &at91sam9261_uart0_device.dev, "usart");
690                                 break;
691                         case 1:
692                                 configure_usart1_pins();
693                                 at91_uarts[i] = &at91sam9261_uart1_device;
694                                 at91_clock_associate("usart1_clk", &at91sam9261_uart1_device.dev, "usart");
695                                 break;
696                         case 2:
697                                 configure_usart2_pins();
698                                 at91_uarts[i] = &at91sam9261_uart2_device;
699                                 at91_clock_associate("usart2_clk", &at91sam9261_uart2_device.dev, "usart");
700                                 break;
701                         case 3:
702                                 configure_dbgu_pins();
703                                 at91_uarts[i] = &at91sam9261_dbgu_device;
704                                 at91_clock_associate("mck", &at91sam9261_dbgu_device.dev, "usart");
705                                 break;
706                         default:
707                                 continue;
708                 }
709                 at91_uarts[i]->id = i;          /* update ID number to mapped ID */
710         }
711
712         /* Set serial console device */
713         if (config->console_tty < ATMEL_MAX_UART)
714                 atmel_default_console_device = at91_uarts[config->console_tty];
715         if (!atmel_default_console_device)
716                 printk(KERN_INFO "AT91: No default serial console defined.\n");
717 }
718
719 void __init at91_add_device_serial(void)
720 {
721         int i;
722
723         for (i = 0; i < ATMEL_MAX_UART; i++) {
724                 if (at91_uarts[i])
725                         platform_device_register(at91_uarts[i]);
726         }
727 }
728 #else
729 void __init at91_init_serial(struct at91_uart_config *config) {}
730 void __init at91_add_device_serial(void) {}
731 #endif
732
733
734 /* -------------------------------------------------------------------- */
735
736 /*
737  * These devices are always present and don't need any board-specific
738  * setup.
739  */
740 static int __init at91_add_standard_devices(void)
741 {
742         return 0;
743 }
744
745 arch_initcall(at91_add_standard_devices);