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OMAP3: GPIO: Enable debounce clock only when debounce is enabled v3.
[linux-ginger.git] / arch / arm / mach-at91 / at91sam9261_devices.c
blob6b89172310c7f566ddbbccb802aeb48315d02df9
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/dma-mapping.h>
17 #include <linux/platform_device.h>
18 #include <linux/i2c-gpio.h>
19
20 #include <linux/fb.h>
21 #include <video/atmel_lcdc.h>
22
23 #include <mach/board.h>
24 #include <mach/gpio.h>
25 #include <mach/at91sam9261.h>
26 #include <mach/at91sam9261_matrix.h>
27 #include <mach/at91sam9_smc.h>
28
29 #include "generic.h"
30
31
32 /* --------------------------------------------------------------------
33 * USB Host
34 * -------------------------------------------------------------------- */
35
36 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
37 static u64 ohci_dmamask = DMA_BIT_MASK(32);
38 static struct at91_usbh_data usbh_data;
39
40 static struct resource usbh_resources[] = {
41 [0] = {
42 .start = AT91SAM9261_UHP_BASE,
43 .end = AT91SAM9261_UHP_BASE + SZ_1M - 1,
44 .flags = IORESOURCE_MEM,
45 },
46 [1] = {
47 .start = AT91SAM9261_ID_UHP,
48 .end = AT91SAM9261_ID_UHP,
49 .flags = IORESOURCE_IRQ,
50 },
51 };
52
53 static struct platform_device at91sam9261_usbh_device = {
54 .name = "at91_ohci",
55 .id = -1,
56 .dev = {
57 .dma_mask = &ohci_dmamask,
58 .coherent_dma_mask = DMA_BIT_MASK(32),
59 .platform_data = &usbh_data,
60 },
61 .resource = usbh_resources,
62 .num_resources = ARRAY_SIZE(usbh_resources),
63 };
64
65 void __init at91_add_device_usbh(struct at91_usbh_data *data)
66 {
67 if (!data)
68 return;
69
70 usbh_data = *data;
71 platform_device_register(&at91sam9261_usbh_device);
72 }
73 #else
74 void __init at91_add_device_usbh(struct at91_usbh_data *data) {}
75 #endif
76
77
78 /* --------------------------------------------------------------------
79 * USB Device (Gadget)
80 * -------------------------------------------------------------------- */
81
82 #ifdef CONFIG_USB_GADGET_AT91
83 static struct at91_udc_data udc_data;
84
85 static struct resource udc_resources[] = {
86 [0] = {
87 .start = AT91SAM9261_BASE_UDP,
88 .end = AT91SAM9261_BASE_UDP + SZ_16K - 1,
89 .flags = IORESOURCE_MEM,
90 },
91 [1] = {
92 .start = AT91SAM9261_ID_UDP,
93 .end = AT91SAM9261_ID_UDP,
94 .flags = IORESOURCE_IRQ,
95 },
96 };
97
98 static struct platform_device at91sam9261_udc_device = {
99 .name = "at91_udc",
100 .id = -1,
101 .dev = {
102 .platform_data = &udc_data,
103 },
104 .resource = udc_resources,
105 .num_resources = ARRAY_SIZE(udc_resources),
106 };
107
108 void __init at91_add_device_udc(struct at91_udc_data *data)
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 by USB device peripheral */
119
120 udc_data = *data;
121 platform_device_register(&at91sam9261_udc_device);
122 }
123 #else
124 void __init at91_add_device_udc(struct at91_udc_data *data) {}
125 #endif
126
127 /* --------------------------------------------------------------------
128 * MMC / SD
129 * -------------------------------------------------------------------- */
130
131 #if defined(CONFIG_MMC_AT91) || defined(CONFIG_MMC_AT91_MODULE)
132 static u64 mmc_dmamask = DMA_BIT_MASK(32);
133 static struct at91_mmc_data mmc_data;
134
135 static struct resource mmc_resources[] = {
136 [0] = {
137 .start = AT91SAM9261_BASE_MCI,
138 .end = AT91SAM9261_BASE_MCI + SZ_16K - 1,
139 .flags = IORESOURCE_MEM,
140 },
141 [1] = {
142 .start = AT91SAM9261_ID_MCI,
143 .end = AT91SAM9261_ID_MCI,
144 .flags = IORESOURCE_IRQ,
145 },
146 };
147
148 static struct platform_device at91sam9261_mmc_device = {
149 .name = "at91_mci",
150 .id = -1,
151 .dev = {
152 .dma_mask = &mmc_dmamask,
153 .coherent_dma_mask = DMA_BIT_MASK(32),
154 .platform_data = &mmc_data,
155 },
156 .resource = mmc_resources,
157 .num_resources = ARRAY_SIZE(mmc_resources),
158 };
159
160 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
161 {
162 if (!data)
163 return;
164
165 /* input/irq */
166 if (data->det_pin) {
167 at91_set_gpio_input(data->det_pin, 1);
168 at91_set_deglitch(data->det_pin, 1);
169 }
170 if (data->wp_pin)
171 at91_set_gpio_input(data->wp_pin, 1);
172 if (data->vcc_pin)
173 at91_set_gpio_output(data->vcc_pin, 0);
174
175 /* CLK */
176 at91_set_B_periph(AT91_PIN_PA2, 0);
177
178 /* CMD */
179 at91_set_B_periph(AT91_PIN_PA1, 1);
180
181 /* DAT0, maybe DAT1..DAT3 */
182 at91_set_B_periph(AT91_PIN_PA0, 1);
183 if (data->wire4) {
184 at91_set_B_periph(AT91_PIN_PA4, 1);
185 at91_set_B_periph(AT91_PIN_PA5, 1);
186 at91_set_B_periph(AT91_PIN_PA6, 1);
187 }
188
189 mmc_data = *data;
190 platform_device_register(&at91sam9261_mmc_device);
191 }
192 #else
193 void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {}
194 #endif
195
196
197 /* --------------------------------------------------------------------
198 * NAND / SmartMedia
199 * -------------------------------------------------------------------- */
200
201 #if defined(CONFIG_MTD_NAND_ATMEL) || defined(CONFIG_MTD_NAND_ATMEL_MODULE)
202 static struct atmel_nand_data nand_data;
203
204 #define NAND_BASE AT91_CHIPSELECT_3
205
206 static struct resource nand_resources[] = {
207 {
208 .start = NAND_BASE,
209 .end = NAND_BASE + SZ_256M - 1,
210 .flags = IORESOURCE_MEM,
211 }
212 };
213
214 static struct platform_device atmel_nand_device = {
215 .name = "atmel_nand",
216 .id = -1,
217 .dev = {
218 .platform_data = &nand_data,
219 },
220 .resource = nand_resources,
221 .num_resources = ARRAY_SIZE(nand_resources),
222 };
223
224 void __init at91_add_device_nand(struct atmel_nand_data *data)
225 {
226 unsigned long csa, mode;
227
228 if (!data)
229 return;
230
231 csa = at91_sys_read(AT91_MATRIX_EBICSA);
232 at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
233
234 /* set the bus interface characteristics */
235 at91_sys_write(AT91_SMC_SETUP(3), AT91_SMC_NWESETUP_(1) | AT91_SMC_NCS_WRSETUP_(0)
236 | AT91_SMC_NRDSETUP_(1) | AT91_SMC_NCS_RDSETUP_(0));
237
238 at91_sys_write(AT91_SMC_PULSE(3), AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3)
239 | AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3));
240
241 at91_sys_write(AT91_SMC_CYCLE(3), AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5));
242
243 if (data->bus_width_16)
244 mode = AT91_SMC_DBW_16;
245 else
246 mode = AT91_SMC_DBW_8;
247 at91_sys_write(AT91_SMC_MODE(3), mode | AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_TDF_(2));
248
249 /* enable pin */
250 if (data->enable_pin)
251 at91_set_gpio_output(data->enable_pin, 1);
252
253 /* ready/busy pin */
254 if (data->rdy_pin)
255 at91_set_gpio_input(data->rdy_pin, 1);
256
257 /* card detect pin */
258 if (data->det_pin)
259 at91_set_gpio_input(data->det_pin, 1);
260
261 at91_set_A_periph(AT91_PIN_PC0, 0); /* NANDOE */
262 at91_set_A_periph(AT91_PIN_PC1, 0); /* NANDWE */
263
264 nand_data = *data;
265 platform_device_register(&atmel_nand_device);
266 }
267
268 #else
269 void __init at91_add_device_nand(struct atmel_nand_data *data) {}
270 #endif
271
272
273 /* --------------------------------------------------------------------
274 * TWI (i2c)
275 * -------------------------------------------------------------------- */
276
277 /*
278 * Prefer the GPIO code since the TWI controller isn't robust
279 * (gets overruns and underruns under load) and can only issue
280 * repeated STARTs in one scenario (the driver doesn't yet handle them).
281 */
282 #if defined(CONFIG_I2C_GPIO) || defined(CONFIG_I2C_GPIO_MODULE)
283
284 static struct i2c_gpio_platform_data pdata = {
285 .sda_pin = AT91_PIN_PA7,
286 .sda_is_open_drain = 1,
287 .scl_pin = AT91_PIN_PA8,
288 .scl_is_open_drain = 1,
289 .udelay = 2, /* ~100 kHz */
290 };
291
292 static struct platform_device at91sam9261_twi_device = {
293 .name = "i2c-gpio",
294 .id = -1,
295 .dev.platform_data = &pdata,
296 };
297
298 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
299 {
300 at91_set_GPIO_periph(AT91_PIN_PA7, 1); /* TWD (SDA) */
301 at91_set_multi_drive(AT91_PIN_PA7, 1);
302
303 at91_set_GPIO_periph(AT91_PIN_PA8, 1); /* TWCK (SCL) */
304 at91_set_multi_drive(AT91_PIN_PA8, 1);
305
306 i2c_register_board_info(0, devices, nr_devices);
307 platform_device_register(&at91sam9261_twi_device);
308 }
309
310 #elif defined(CONFIG_I2C_AT91) || defined(CONFIG_I2C_AT91_MODULE)
311
312 static struct resource twi_resources[] = {
313 [0] = {
314 .start = AT91SAM9261_BASE_TWI,
315 .end = AT91SAM9261_BASE_TWI + SZ_16K - 1,
316 .flags = IORESOURCE_MEM,
317 },
318 [1] = {
319 .start = AT91SAM9261_ID_TWI,
320 .end = AT91SAM9261_ID_TWI,
321 .flags = IORESOURCE_IRQ,
322 },
323 };
324
325 static struct platform_device at91sam9261_twi_device = {
326 .name = "at91_i2c",
327 .id = -1,
328 .resource = twi_resources,
329 .num_resources = ARRAY_SIZE(twi_resources),
330 };
331
332 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices)
333 {
334 /* pins used for TWI interface */
335 at91_set_A_periph(AT91_PIN_PA7, 0); /* TWD */
336 at91_set_multi_drive(AT91_PIN_PA7, 1);
337
338 at91_set_A_periph(AT91_PIN_PA8, 0); /* TWCK */
339 at91_set_multi_drive(AT91_PIN_PA8, 1);
340
341 i2c_register_board_info(0, devices, nr_devices);
342 platform_device_register(&at91sam9261_twi_device);
343 }
344 #else
345 void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices) {}
346 #endif
347
348
349 /* --------------------------------------------------------------------
350 * SPI
351 * -------------------------------------------------------------------- */
352
353 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
354 static u64 spi_dmamask = DMA_BIT_MASK(32);
355
356 static struct resource spi0_resources[] = {
357 [0] = {
358 .start = AT91SAM9261_BASE_SPI0,
359 .end = AT91SAM9261_BASE_SPI0 + SZ_16K - 1,
360 .flags = IORESOURCE_MEM,
361 },
362 [1] = {
363 .start = AT91SAM9261_ID_SPI0,
364 .end = AT91SAM9261_ID_SPI0,
365 .flags = IORESOURCE_IRQ,
366 },
367 };
368
369 static struct platform_device at91sam9261_spi0_device = {
370 .name = "atmel_spi",
371 .id = 0,
372 .dev = {
373 .dma_mask = &spi_dmamask,
374 .coherent_dma_mask = DMA_BIT_MASK(32),
375 },
376 .resource = spi0_resources,
377 .num_resources = ARRAY_SIZE(spi0_resources),
378 };
379
380 static const unsigned spi0_standard_cs[4] = { AT91_PIN_PA3, AT91_PIN_PA4, AT91_PIN_PA5, AT91_PIN_PA6 };
381
382 static struct resource spi1_resources[] = {
383 [0] = {
384 .start = AT91SAM9261_BASE_SPI1,
385 .end = AT91SAM9261_BASE_SPI1 + SZ_16K - 1,
386 .flags = IORESOURCE_MEM,
387 },
388 [1] = {
389 .start = AT91SAM9261_ID_SPI1,
390 .end = AT91SAM9261_ID_SPI1,
391 .flags = IORESOURCE_IRQ,
392 },
393 };
394
395 static struct platform_device at91sam9261_spi1_device = {
396 .name = "atmel_spi",
397 .id = 1,
398 .dev = {
399 .dma_mask = &spi_dmamask,
400 .coherent_dma_mask = DMA_BIT_MASK(32),
401 },
402 .resource = spi1_resources,
403 .num_resources = ARRAY_SIZE(spi1_resources),
404 };
405
406 static const unsigned spi1_standard_cs[4] = { AT91_PIN_PB28, AT91_PIN_PA24, AT91_PIN_PA25, AT91_PIN_PA26 };
407
408 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices)
409 {
410 int i;
411 unsigned long cs_pin;
412 short enable_spi0 = 0;
413 short enable_spi1 = 0;
414
415 /* Choose SPI chip-selects */
416 for (i = 0; i < nr_devices; i++) {
417 if (devices[i].controller_data)
418 cs_pin = (unsigned long) devices[i].controller_data;
419 else if (devices[i].bus_num == 0)
420 cs_pin = spi0_standard_cs[devices[i].chip_select];
421 else
422 cs_pin = spi1_standard_cs[devices[i].chip_select];
423
424 if (devices[i].bus_num == 0)
425 enable_spi0 = 1;
426 else
427 enable_spi1 = 1;
428
429 /* enable chip-select pin */
430 at91_set_gpio_output(cs_pin, 1);
431
432 /* pass chip-select pin to driver */
433 devices[i].controller_data = (void *) cs_pin;
434 }
435
436 spi_register_board_info(devices, nr_devices);
437
438 /* Configure SPI bus(es) */
439 if (enable_spi0) {
440 at91_set_A_periph(AT91_PIN_PA0, 0); /* SPI0_MISO */
441 at91_set_A_periph(AT91_PIN_PA1, 0); /* SPI0_MOSI */
442 at91_set_A_periph(AT91_PIN_PA2, 0); /* SPI0_SPCK */
443
444 at91_clock_associate("spi0_clk", &at91sam9261_spi0_device.dev, "spi_clk");
445 platform_device_register(&at91sam9261_spi0_device);
446 }
447 if (enable_spi1) {
448 at91_set_A_periph(AT91_PIN_PB30, 0); /* SPI1_MISO */
449 at91_set_A_periph(AT91_PIN_PB31, 0); /* SPI1_MOSI */
450 at91_set_A_periph(AT91_PIN_PB29, 0); /* SPI1_SPCK */
451
452 at91_clock_associate("spi1_clk", &at91sam9261_spi1_device.dev, "spi_clk");
453 platform_device_register(&at91sam9261_spi1_device);
454 }
455 }
456 #else
457 void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices) {}
458 #endif
459
460
461 /* --------------------------------------------------------------------
462 * LCD Controller
463 * -------------------------------------------------------------------- */
464
465 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
466 static u64 lcdc_dmamask = DMA_BIT_MASK(32);
467 static struct atmel_lcdfb_info lcdc_data;
468
469 static struct resource lcdc_resources[] = {
470 [0] = {
471 .start = AT91SAM9261_LCDC_BASE,
472 .end = AT91SAM9261_LCDC_BASE + SZ_4K - 1,
473 .flags = IORESOURCE_MEM,
474 },
475 [1] = {
476 .start = AT91SAM9261_ID_LCDC,
477 .end = AT91SAM9261_ID_LCDC,
478 .flags = IORESOURCE_IRQ,
479 },
480 #if defined(CONFIG_FB_INTSRAM)
481 [2] = {
482 .start = AT91SAM9261_SRAM_BASE,
483 .end = AT91SAM9261_SRAM_BASE + AT91SAM9261_SRAM_SIZE - 1,
484 .flags = IORESOURCE_MEM,
485 },
486 #endif
487 };
488
489 static struct platform_device at91_lcdc_device = {
490 .name = "atmel_lcdfb",
491 .id = 0,
492 .dev = {
493 .dma_mask = &lcdc_dmamask,
494 .coherent_dma_mask = DMA_BIT_MASK(32),
495 .platform_data = &lcdc_data,
496 },
497 .resource = lcdc_resources,
498 .num_resources = ARRAY_SIZE(lcdc_resources),
499 };
500
501 void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
502 {
503 if (!data) {
504 return;
505 }
506
507 #if defined(CONFIG_FB_ATMEL_STN)
508 at91_set_A_periph(AT91_PIN_PB0, 0); /* LCDVSYNC */
509 at91_set_A_periph(AT91_PIN_PB1, 0); /* LCDHSYNC */
510 at91_set_A_periph(AT91_PIN_PB2, 0); /* LCDDOTCK */
511 at91_set_A_periph(AT91_PIN_PB3, 0); /* LCDDEN */
512 at91_set_A_periph(AT91_PIN_PB4, 0); /* LCDCC */
513 at91_set_A_periph(AT91_PIN_PB5, 0); /* LCDD0 */
514 at91_set_A_periph(AT91_PIN_PB6, 0); /* LCDD1 */
515 at91_set_A_periph(AT91_PIN_PB7, 0); /* LCDD2 */
516 at91_set_A_periph(AT91_PIN_PB8, 0); /* LCDD3 */
517 #else
518 at91_set_A_periph(AT91_PIN_PB1, 0); /* LCDHSYNC */
519 at91_set_A_periph(AT91_PIN_PB2, 0); /* LCDDOTCK */
520 at91_set_A_periph(AT91_PIN_PB3, 0); /* LCDDEN */
521 at91_set_A_periph(AT91_PIN_PB4, 0); /* LCDCC */
522 at91_set_A_periph(AT91_PIN_PB7, 0); /* LCDD2 */
523 at91_set_A_periph(AT91_PIN_PB8, 0); /* LCDD3 */
524 at91_set_A_periph(AT91_PIN_PB9, 0); /* LCDD4 */
525 at91_set_A_periph(AT91_PIN_PB10, 0); /* LCDD5 */
526 at91_set_A_periph(AT91_PIN_PB11, 0); /* LCDD6 */
527 at91_set_A_periph(AT91_PIN_PB12, 0); /* LCDD7 */
528 at91_set_A_periph(AT91_PIN_PB15, 0); /* LCDD10 */
529 at91_set_A_periph(AT91_PIN_PB16, 0); /* LCDD11 */
530 at91_set_A_periph(AT91_PIN_PB17, 0); /* LCDD12 */
531 at91_set_A_periph(AT91_PIN_PB18, 0); /* LCDD13 */
532 at91_set_A_periph(AT91_PIN_PB19, 0); /* LCDD14 */
533 at91_set_A_periph(AT91_PIN_PB20, 0); /* LCDD15 */
534 at91_set_B_periph(AT91_PIN_PB23, 0); /* LCDD18 */
535 at91_set_B_periph(AT91_PIN_PB24, 0); /* LCDD19 */
536 at91_set_B_periph(AT91_PIN_PB25, 0); /* LCDD20 */
537 at91_set_B_periph(AT91_PIN_PB26, 0); /* LCDD21 */
538 at91_set_B_periph(AT91_PIN_PB27, 0); /* LCDD22 */
539 at91_set_B_periph(AT91_PIN_PB28, 0); /* LCDD23 */
540 #endif
541
542 if (ARRAY_SIZE(lcdc_resources) > 2) {
543 void __iomem *fb;
544 struct resource *fb_res = &lcdc_resources[2];
545 size_t fb_len = fb_res->end - fb_res->start + 1;
546
547 fb = ioremap(fb_res->start, fb_len);
548 if (fb) {
549 memset(fb, 0, fb_len);
550 iounmap(fb);
551 }
552 }
553 lcdc_data = *data;
554 platform_device_register(&at91_lcdc_device);
555 }
556 #else
557 void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data) {}
558 #endif
559
560
561 /* --------------------------------------------------------------------
562 * Timer/Counter block
563 * -------------------------------------------------------------------- */
564
565 #ifdef CONFIG_ATMEL_TCLIB
566
567 static struct resource tcb_resources[] = {
568 [0] = {
569 .start = AT91SAM9261_BASE_TCB0,
570 .end = AT91SAM9261_BASE_TCB0 + SZ_16K - 1,
571 .flags = IORESOURCE_MEM,
572 },
573 [1] = {
574 .start = AT91SAM9261_ID_TC0,
575 .end = AT91SAM9261_ID_TC0,
576 .flags = IORESOURCE_IRQ,
577 },
578 [2] = {
579 .start = AT91SAM9261_ID_TC1,
580 .end = AT91SAM9261_ID_TC1,
581 .flags = IORESOURCE_IRQ,
582 },
583 [3] = {
584 .start = AT91SAM9261_ID_TC2,
585 .end = AT91SAM9261_ID_TC2,
586 .flags = IORESOURCE_IRQ,
587 },
588 };
589
590 static struct platform_device at91sam9261_tcb_device = {
591 .name = "atmel_tcb",
592 .id = 0,
593 .resource = tcb_resources,
594 .num_resources = ARRAY_SIZE(tcb_resources),
595 };
596
597 static void __init at91_add_device_tc(void)
598 {
599 /* this chip has a separate clock and irq for each TC channel */
600 at91_clock_associate("tc0_clk", &at91sam9261_tcb_device.dev, "t0_clk");
601 at91_clock_associate("tc1_clk", &at91sam9261_tcb_device.dev, "t1_clk");
602 at91_clock_associate("tc2_clk", &at91sam9261_tcb_device.dev, "t2_clk");
603 platform_device_register(&at91sam9261_tcb_device);
604 }
605 #else
606 static void __init at91_add_device_tc(void) { }
607 #endif
608
609
610 /* --------------------------------------------------------------------
611 * RTT
612 * -------------------------------------------------------------------- */
613
614 static struct resource rtt_resources[] = {
615 {
616 .start = AT91_BASE_SYS + AT91_RTT,
617 .end = AT91_BASE_SYS + AT91_RTT + SZ_16 - 1,
618 .flags = IORESOURCE_MEM,
619 }
620 };
621
622 static struct platform_device at91sam9261_rtt_device = {
623 .name = "at91_rtt",
624 .id = 0,
625 .resource = rtt_resources,
626 .num_resources = ARRAY_SIZE(rtt_resources),
627 };
628
629 static void __init at91_add_device_rtt(void)
630 {
631 platform_device_register(&at91sam9261_rtt_device);
632 }
633
634
635 /* --------------------------------------------------------------------
636 * Watchdog
637 * -------------------------------------------------------------------- */
638
639 #if defined(CONFIG_AT91SAM9_WATCHDOG) || defined(CONFIG_AT91SAM9_WATCHDOG_MODULE)
640 static struct platform_device at91sam9261_wdt_device = {
641 .name = "at91_wdt",
642 .id = -1,
643 .num_resources = 0,
644 };
645
646 static void __init at91_add_device_watchdog(void)
647 {
648 platform_device_register(&at91sam9261_wdt_device);
649 }
650 #else
651 static void __init at91_add_device_watchdog(void) {}
652 #endif
653
654
655 /* --------------------------------------------------------------------
656 * SSC -- Synchronous Serial Controller
657 * -------------------------------------------------------------------- */
658
659 #if defined(CONFIG_ATMEL_SSC) || defined(CONFIG_ATMEL_SSC_MODULE)
660 static u64 ssc0_dmamask = DMA_BIT_MASK(32);
661
662 static struct resource ssc0_resources[] = {
663 [0] = {
664 .start = AT91SAM9261_BASE_SSC0,
665 .end = AT91SAM9261_BASE_SSC0 + SZ_16K - 1,
666 .flags = IORESOURCE_MEM,
667 },
668 [1] = {
669 .start = AT91SAM9261_ID_SSC0,
670 .end = AT91SAM9261_ID_SSC0,
671 .flags = IORESOURCE_IRQ,
672 },
673 };
674
675 static struct platform_device at91sam9261_ssc0_device = {
676 .name = "ssc",
677 .id = 0,
678 .dev = {
679 .dma_mask = &ssc0_dmamask,
680 .coherent_dma_mask = DMA_BIT_MASK(32),
681 },
682 .resource = ssc0_resources,
683 .num_resources = ARRAY_SIZE(ssc0_resources),
684 };
685
686 static inline void configure_ssc0_pins(unsigned pins)
687 {
688 if (pins & ATMEL_SSC_TF)
689 at91_set_A_periph(AT91_PIN_PB21, 1);
690 if (pins & ATMEL_SSC_TK)
691 at91_set_A_periph(AT91_PIN_PB22, 1);
692 if (pins & ATMEL_SSC_TD)
693 at91_set_A_periph(AT91_PIN_PB23, 1);
694 if (pins & ATMEL_SSC_RD)
695 at91_set_A_periph(AT91_PIN_PB24, 1);
696 if (pins & ATMEL_SSC_RK)
697 at91_set_A_periph(AT91_PIN_PB25, 1);
698 if (pins & ATMEL_SSC_RF)
699 at91_set_A_periph(AT91_PIN_PB26, 1);
700 }
701
702 static u64 ssc1_dmamask = DMA_BIT_MASK(32);
703
704 static struct resource ssc1_resources[] = {
705 [0] = {
706 .start = AT91SAM9261_BASE_SSC1,
707 .end = AT91SAM9261_BASE_SSC1 + SZ_16K - 1,
708 .flags = IORESOURCE_MEM,
709 },
710 [1] = {
711 .start = AT91SAM9261_ID_SSC1,
712 .end = AT91SAM9261_ID_SSC1,
713 .flags = IORESOURCE_IRQ,
714 },
715 };
716
717 static struct platform_device at91sam9261_ssc1_device = {
718 .name = "ssc",
719 .id = 1,
720 .dev = {
721 .dma_mask = &ssc1_dmamask,
722 .coherent_dma_mask = DMA_BIT_MASK(32),
723 },
724 .resource = ssc1_resources,
725 .num_resources = ARRAY_SIZE(ssc1_resources),
726 };
727
728 static inline void configure_ssc1_pins(unsigned pins)
729 {
730 if (pins & ATMEL_SSC_TF)
731 at91_set_B_periph(AT91_PIN_PA17, 1);
732 if (pins & ATMEL_SSC_TK)
733 at91_set_B_periph(AT91_PIN_PA18, 1);
734 if (pins & ATMEL_SSC_TD)
735 at91_set_B_periph(AT91_PIN_PA19, 1);
736 if (pins & ATMEL_SSC_RD)
737 at91_set_B_periph(AT91_PIN_PA20, 1);
738 if (pins & ATMEL_SSC_RK)
739 at91_set_B_periph(AT91_PIN_PA21, 1);
740 if (pins & ATMEL_SSC_RF)
741 at91_set_B_periph(AT91_PIN_PA22, 1);
742 }
743
744 static u64 ssc2_dmamask = DMA_BIT_MASK(32);
745
746 static struct resource ssc2_resources[] = {
747 [0] = {
748 .start = AT91SAM9261_BASE_SSC2,
749 .end = AT91SAM9261_BASE_SSC2 + SZ_16K - 1,
750 .flags = IORESOURCE_MEM,
751 },
752 [1] = {
753 .start = AT91SAM9261_ID_SSC2,
754 .end = AT91SAM9261_ID_SSC2,
755 .flags = IORESOURCE_IRQ,
756 },
757 };
758
759 static struct platform_device at91sam9261_ssc2_device = {
760 .name = "ssc",
761 .id = 2,
762 .dev = {
763 .dma_mask = &ssc2_dmamask,
764 .coherent_dma_mask = DMA_BIT_MASK(32),
765 },
766 .resource = ssc2_resources,
767 .num_resources = ARRAY_SIZE(ssc2_resources),
768 };
769
770 static inline void configure_ssc2_pins(unsigned pins)
771 {
772 if (pins & ATMEL_SSC_TF)
773 at91_set_B_periph(AT91_PIN_PC25, 1);
774 if (pins & ATMEL_SSC_TK)
775 at91_set_B_periph(AT91_PIN_PC26, 1);
776 if (pins & ATMEL_SSC_TD)
777 at91_set_B_periph(AT91_PIN_PC27, 1);
778 if (pins & ATMEL_SSC_RD)
779 at91_set_B_periph(AT91_PIN_PC28, 1);
780 if (pins & ATMEL_SSC_RK)
781 at91_set_B_periph(AT91_PIN_PC29, 1);
782 if (pins & ATMEL_SSC_RF)
783 at91_set_B_periph(AT91_PIN_PC30, 1);
784 }
785
786 /*
787 * SSC controllers are accessed through library code, instead of any
788 * kind of all-singing/all-dancing driver. For example one could be
789 * used by a particular I2S audio codec's driver, while another one
790 * on the same system might be used by a custom data capture driver.
791 */
792 void __init at91_add_device_ssc(unsigned id, unsigned pins)
793 {
794 struct platform_device *pdev;
795
796 /*
797 * NOTE: caller is responsible for passing information matching
798 * "pins" to whatever will be using each particular controller.
799 */
800 switch (id) {
801 case AT91SAM9261_ID_SSC0:
802 pdev = &at91sam9261_ssc0_device;
803 configure_ssc0_pins(pins);
804 at91_clock_associate("ssc0_clk", &pdev->dev, "pclk");
805 break;
806 case AT91SAM9261_ID_SSC1:
807 pdev = &at91sam9261_ssc1_device;
808 configure_ssc1_pins(pins);
809 at91_clock_associate("ssc1_clk", &pdev->dev, "pclk");
810 break;
811 case AT91SAM9261_ID_SSC2:
812 pdev = &at91sam9261_ssc2_device;
813 configure_ssc2_pins(pins);
814 at91_clock_associate("ssc2_clk", &pdev->dev, "pclk");
815 break;
816 default:
817 return;
818 }
819
820 platform_device_register(pdev);
821 }
822
823 #else
824 void __init at91_add_device_ssc(unsigned id, unsigned pins) {}
825 #endif
826
827
828 /* --------------------------------------------------------------------
829 * UART
830 * -------------------------------------------------------------------- */
831
832 #if defined(CONFIG_SERIAL_ATMEL)
833 static struct resource dbgu_resources[] = {
834 [0] = {
835 .start = AT91_VA_BASE_SYS + AT91_DBGU,
836 .end = AT91_VA_BASE_SYS + AT91_DBGU + SZ_512 - 1,
837 .flags = IORESOURCE_MEM,
838 },
839 [1] = {
840 .start = AT91_ID_SYS,
841 .end = AT91_ID_SYS,
842 .flags = IORESOURCE_IRQ,
843 },
844 };
845
846 static struct atmel_uart_data dbgu_data = {
847 .use_dma_tx = 0,
848 .use_dma_rx = 0, /* DBGU not capable of receive DMA */
849 .regs = (void __iomem *)(AT91_VA_BASE_SYS + AT91_DBGU),
850 };
851
852 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
853
854 static struct platform_device at91sam9261_dbgu_device = {
855 .name = "atmel_usart",
856 .id = 0,
857 .dev = {
858 .dma_mask = &dbgu_dmamask,
859 .coherent_dma_mask = DMA_BIT_MASK(32),
860 .platform_data = &dbgu_data,
861 },
862 .resource = dbgu_resources,
863 .num_resources = ARRAY_SIZE(dbgu_resources),
864 };
865
866 static inline void configure_dbgu_pins(void)
867 {
868 at91_set_A_periph(AT91_PIN_PA9, 0); /* DRXD */
869 at91_set_A_periph(AT91_PIN_PA10, 1); /* DTXD */
870 }
871
872 static struct resource uart0_resources[] = {
873 [0] = {
874 .start = AT91SAM9261_BASE_US0,
875 .end = AT91SAM9261_BASE_US0 + SZ_16K - 1,
876 .flags = IORESOURCE_MEM,
877 },
878 [1] = {
879 .start = AT91SAM9261_ID_US0,
880 .end = AT91SAM9261_ID_US0,
881 .flags = IORESOURCE_IRQ,
882 },
883 };
884
885 static struct atmel_uart_data uart0_data = {
886 .use_dma_tx = 1,
887 .use_dma_rx = 1,
888 };
889
890 static u64 uart0_dmamask = DMA_BIT_MASK(32);
891
892 static struct platform_device at91sam9261_uart0_device = {
893 .name = "atmel_usart",
894 .id = 1,
895 .dev = {
896 .dma_mask = &uart0_dmamask,
897 .coherent_dma_mask = DMA_BIT_MASK(32),
898 .platform_data = &uart0_data,
899 },
900 .resource = uart0_resources,
901 .num_resources = ARRAY_SIZE(uart0_resources),
902 };
903
904 static inline void configure_usart0_pins(unsigned pins)
905 {
906 at91_set_A_periph(AT91_PIN_PC8, 1); /* TXD0 */
907 at91_set_A_periph(AT91_PIN_PC9, 0); /* RXD0 */
908
909 if (pins & ATMEL_UART_RTS)
910 at91_set_A_periph(AT91_PIN_PC10, 0); /* RTS0 */
911 if (pins & ATMEL_UART_CTS)
912 at91_set_A_periph(AT91_PIN_PC11, 0); /* CTS0 */
913 }
914
915 static struct resource uart1_resources[] = {
916 [0] = {
917 .start = AT91SAM9261_BASE_US1,
918 .end = AT91SAM9261_BASE_US1 + SZ_16K - 1,
919 .flags = IORESOURCE_MEM,
920 },
921 [1] = {
922 .start = AT91SAM9261_ID_US1,
923 .end = AT91SAM9261_ID_US1,
924 .flags = IORESOURCE_IRQ,
925 },
926 };
927
928 static struct atmel_uart_data uart1_data = {
929 .use_dma_tx = 1,
930 .use_dma_rx = 1,
931 };
932
933 static u64 uart1_dmamask = DMA_BIT_MASK(32);
934
935 static struct platform_device at91sam9261_uart1_device = {
936 .name = "atmel_usart",
937 .id = 2,
938 .dev = {
939 .dma_mask = &uart1_dmamask,
940 .coherent_dma_mask = DMA_BIT_MASK(32),
941 .platform_data = &uart1_data,
942 },
943 .resource = uart1_resources,
944 .num_resources = ARRAY_SIZE(uart1_resources),
945 };
946
947 static inline void configure_usart1_pins(unsigned pins)
948 {
949 at91_set_A_periph(AT91_PIN_PC12, 1); /* TXD1 */
950 at91_set_A_periph(AT91_PIN_PC13, 0); /* RXD1 */
951
952 if (pins & ATMEL_UART_RTS)
953 at91_set_B_periph(AT91_PIN_PA12, 0); /* RTS1 */
954 if (pins & ATMEL_UART_CTS)
955 at91_set_B_periph(AT91_PIN_PA13, 0); /* CTS1 */
956 }
957
958 static struct resource uart2_resources[] = {
959 [0] = {
960 .start = AT91SAM9261_BASE_US2,
961 .end = AT91SAM9261_BASE_US2 + SZ_16K - 1,
962 .flags = IORESOURCE_MEM,
963 },
964 [1] = {
965 .start = AT91SAM9261_ID_US2,
966 .end = AT91SAM9261_ID_US2,
967 .flags = IORESOURCE_IRQ,
968 },
969 };
970
971 static struct atmel_uart_data uart2_data = {
972 .use_dma_tx = 1,
973 .use_dma_rx = 1,
974 };
975
976 static u64 uart2_dmamask = DMA_BIT_MASK(32);
977
978 static struct platform_device at91sam9261_uart2_device = {
979 .name = "atmel_usart",
980 .id = 3,
981 .dev = {
982 .dma_mask = &uart2_dmamask,
983 .coherent_dma_mask = DMA_BIT_MASK(32),
984 .platform_data = &uart2_data,
985 },
986 .resource = uart2_resources,
987 .num_resources = ARRAY_SIZE(uart2_resources),
988 };
989
990 static inline void configure_usart2_pins(unsigned pins)
991 {
992 at91_set_A_periph(AT91_PIN_PC15, 0); /* RXD2 */
993 at91_set_A_periph(AT91_PIN_PC14, 1); /* TXD2 */
994
995 if (pins & ATMEL_UART_RTS)
996 at91_set_B_periph(AT91_PIN_PA15, 0); /* RTS2*/
997 if (pins & ATMEL_UART_CTS)
998 at91_set_B_periph(AT91_PIN_PA16, 0); /* CTS2 */
999 }
1000
1001 static struct platform_device *__initdata at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
1002 struct platform_device *atmel_default_console_device; /* the serial console device */
1003
1004 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
1005 {
1006 struct platform_device *pdev;
1007
1008 switch (id) {
1009 case 0: /* DBGU */
1010 pdev = &at91sam9261_dbgu_device;
1011 configure_dbgu_pins();
1012 at91_clock_associate("mck", &pdev->dev, "usart");
1013 break;
1014 case AT91SAM9261_ID_US0:
1015 pdev = &at91sam9261_uart0_device;
1016 configure_usart0_pins(pins);
1017 at91_clock_associate("usart0_clk", &pdev->dev, "usart");
1018 break;
1019 case AT91SAM9261_ID_US1:
1020 pdev = &at91sam9261_uart1_device;
1021 configure_usart1_pins(pins);
1022 at91_clock_associate("usart1_clk", &pdev->dev, "usart");
1023 break;
1024 case AT91SAM9261_ID_US2:
1025 pdev = &at91sam9261_uart2_device;
1026 configure_usart2_pins(pins);
1027 at91_clock_associate("usart2_clk", &pdev->dev, "usart");
1028 break;
1029 default:
1030 return;
1031 }
1032 pdev->id = portnr; /* update to mapped ID */
1033
1034 if (portnr < ATMEL_MAX_UART)
1035 at91_uarts[portnr] = pdev;
1036 }
1037
1038 void __init at91_set_serial_console(unsigned portnr)
1039 {
1040 if (portnr < ATMEL_MAX_UART)
1041 atmel_default_console_device = at91_uarts[portnr];
1042 }
1043
1044 void __init at91_add_device_serial(void)
1045 {
1046 int i;
1047
1048 for (i = 0; i < ATMEL_MAX_UART; i++) {
1049 if (at91_uarts[i])
1050 platform_device_register(at91_uarts[i]);
1051 }
1052
1053 if (!atmel_default_console_device)
1054 printk(KERN_INFO "AT91: No default serial console defined.\n");
1055 }
1056 #else
1057 void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
1058 void __init at91_set_serial_console(unsigned portnr) {}
1059 void __init at91_add_device_serial(void) {}
1060 #endif
1061
1062
1063 /* -------------------------------------------------------------------- */
1064
1065 /*
1066 * These devices are always present and don't need any board-specific
1067 * setup.
1068 */
1069 static int __init at91_add_standard_devices(void)
1070 {
1071 at91_add_device_rtt();
1072 at91_add_device_watchdog();
1073 at91_add_device_tc();
1074 return 0;
1075 }
1076
1077 arch_initcall(at91_add_standard_devices);
Linux for Ginger Game Console