1 /*
2 * linux/arch/arm/mach-at91/board-sam9261ek.c
3 *
4 * Copyright (C) 2005 SAN People
5 * Copyright (C) 2006 Atmel
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 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22 #include <linux/types.h>
23 #include <linux/gpio.h>
24 #include <linux/init.h>
25 #include <linux/mm.h>
26 #include <linux/module.h>
27 #include <linux/platform_device.h>
28 #include <linux/spi/spi.h>
29 #include <linux/spi/ads7846.h>
30 #include <linux/spi/at73c213.h>
31 #include <linux/clk.h>
32 #include <linux/dm9000.h>
33 #include <linux/fb.h>
34 #include <linux/gpio_keys.h>
35 #include <linux/input.h>
36
37 #include <video/atmel_lcdc.h>
38
39 #include <asm/setup.h>
40 #include <asm/mach-types.h>
41 #include <asm/irq.h>
42
43 #include <asm/mach/arch.h>
44 #include <asm/mach/map.h>
45 #include <asm/mach/irq.h>
46
47 #include <mach/hardware.h>
48 #include <mach/board.h>
49 #include <mach/at91sam9_smc.h>
50 #include <mach/at91_shdwc.h>
51 #include <mach/system_rev.h>
52
53 #include "sam9_smc.h"
54 #include "generic.h"
55
56
ek_init_early(void)57 static void __init ek_init_early(void)
58 {
59 /* Initialize processor: 18.432 MHz crystal */
60 at91_initialize(18432000);
61
62 /* Setup the LEDs */
63 at91_init_leds(AT91_PIN_PA13, AT91_PIN_PA14);
64
65 /* DBGU on ttyS0. (Rx & Tx only) */
66 at91_register_uart(0, 0, 0);
67
68 /* set serial console to ttyS0 (ie, DBGU) */
69 at91_set_serial_console(0);
70 }
71
72 /*
73 * DM9000 ethernet device
74 */
75 #if defined(CONFIG_DM9000)
76 static struct resource dm9000_resource[] = {
77 [0] = {
78 .start = AT91_CHIPSELECT_2,
79 .end = AT91_CHIPSELECT_2 + 3,
80 .flags = IORESOURCE_MEM
81 },
82 [1] = {
83 .start = AT91_CHIPSELECT_2 + 0x44,
84 .end = AT91_CHIPSELECT_2 + 0xFF,
85 .flags = IORESOURCE_MEM
86 },
87 [2] = {
88 .flags = IORESOURCE_IRQ
89 | IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE,
90 }
91 };
92
93 static struct dm9000_plat_data dm9000_platdata = {
94 .flags = DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM,
95 };
96
97 static struct platform_device dm9000_device = {
98 .name = "dm9000",
99 .id = 0,
100 .num_resources = ARRAY_SIZE(dm9000_resource),
101 .resource = dm9000_resource,
102 .dev = {
103 .platform_data = &dm9000_platdata,
104 }
105 };
106
107 /*
108 * SMC timings for the DM9000.
109 * Note: These timings were calculated for MASTER_CLOCK = 100000000 according to the DM9000 timings.
110 */
111 static struct sam9_smc_config __initdata dm9000_smc_config = {
112 .ncs_read_setup = 0,
113 .nrd_setup = 2,
114 .ncs_write_setup = 0,
115 .nwe_setup = 2,
116
117 .ncs_read_pulse = 8,
118 .nrd_pulse = 4,
119 .ncs_write_pulse = 8,
120 .nwe_pulse = 4,
121
122 .read_cycle = 16,
123 .write_cycle = 16,
124
125 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE | AT91_SMC_DBW_16,
126 .tdf_cycles = 1,
127 };
128
ek_add_device_dm9000(void)129 static void __init ek_add_device_dm9000(void)
130 {
131 struct resource *r = &dm9000_resource[2];
132
133 /* Configure chip-select 2 (DM9000) */
134 sam9_smc_configure(0, 2, &dm9000_smc_config);
135
136 /* Configure Reset signal as output */
137 at91_set_gpio_output(AT91_PIN_PC10, 0);
138
139 /* Configure Interrupt pin as input, no pull-up */
140 at91_set_gpio_input(AT91_PIN_PC11, 0);
141
142 r->start = r->end = gpio_to_irq(AT91_PIN_PC11);
143 platform_device_register(&dm9000_device);
144 }
145 #else
ek_add_device_dm9000(void)146 static void __init ek_add_device_dm9000(void) {}
147 #endif /* CONFIG_DM9000 */
148
149
150 /*
151 * USB Host Port
152 */
153 static struct at91_usbh_data __initdata ek_usbh_data = {
154 .ports = 2,
155 .vbus_pin = {-EINVAL, -EINVAL},
156 .overcurrent_pin= {-EINVAL, -EINVAL},
157 };
158
159
160 /*
161 * USB Device Port
162 */
163 static struct at91_udc_data __initdata ek_udc_data = {
164 .vbus_pin = AT91_PIN_PB29,
165 .pullup_pin = -EINVAL, /* pull-up driven by UDC */
166 };
167
168
169 /*
170 * NAND flash
171 */
172 static struct mtd_partition __initdata ek_nand_partition[] = {
173 {
174 .name = "Partition 1",
175 .offset = 0,
176 .size = SZ_256K,
177 },
178 {
179 .name = "Partition 2",
180 .offset = MTDPART_OFS_NXTBLK,
181 .size = MTDPART_SIZ_FULL,
182 },
183 };
184
185 static struct atmel_nand_data __initdata ek_nand_data = {
186 .ale = 22,
187 .cle = 21,
188 .det_pin = -EINVAL,
189 .rdy_pin = AT91_PIN_PC15,
190 .enable_pin = AT91_PIN_PC14,
191 .ecc_mode = NAND_ECC_SOFT,
192 .on_flash_bbt = 1,
193 .parts = ek_nand_partition,
194 .num_parts = ARRAY_SIZE(ek_nand_partition),
195 };
196
197 static struct sam9_smc_config __initdata ek_nand_smc_config = {
198 .ncs_read_setup = 0,
199 .nrd_setup = 1,
200 .ncs_write_setup = 0,
201 .nwe_setup = 1,
202
203 .ncs_read_pulse = 3,
204 .nrd_pulse = 3,
205 .ncs_write_pulse = 3,
206 .nwe_pulse = 3,
207
208 .read_cycle = 5,
209 .write_cycle = 5,
210
211 .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
212 .tdf_cycles = 2,
213 };
214
ek_add_device_nand(void)215 static void __init ek_add_device_nand(void)
216 {
217 ek_nand_data.bus_width_16 = board_have_nand_16bit();
218 /* setup bus-width (8 or 16) */
219 if (ek_nand_data.bus_width_16)
220 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
221 else
222 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
223
224 /* configure chip-select 3 (NAND) */
225 sam9_smc_configure(0, 3, &ek_nand_smc_config);
226
227 at91_add_device_nand(&ek_nand_data);
228 }
229
230 /*
231 * SPI related devices
232 */
233 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
234
235 /*
236 * ADS7846 Touchscreen
237 */
238 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
239
ads7843_pendown_state(void)240 static int ads7843_pendown_state(void)
241 {
242 return !at91_get_gpio_value(AT91_PIN_PC2); /* Touchscreen PENIRQ */
243 }
244
245 static struct ads7846_platform_data ads_info = {
246 .model = 7843,
247 .x_min = 150,
248 .x_max = 3830,
249 .y_min = 190,
250 .y_max = 3830,
251 .vref_delay_usecs = 100,
252 .x_plate_ohms = 450,
253 .y_plate_ohms = 250,
254 .pressure_max = 15000,
255 .debounce_max = 1,
256 .debounce_rep = 0,
257 .debounce_tol = (~0),
258 .get_pendown_state = ads7843_pendown_state,
259 };
260
ek_add_device_ts(void)261 static void __init ek_add_device_ts(void)
262 {
263 at91_set_B_periph(AT91_PIN_PC2, 1); /* External IRQ0, with pullup */
264 at91_set_gpio_input(AT91_PIN_PA11, 1); /* Touchscreen BUSY signal */
265 }
266 #else
ek_add_device_ts(void)267 static void __init ek_add_device_ts(void) {}
268 #endif
269
270 /*
271 * Audio
272 */
273 static struct at73c213_board_info at73c213_data = {
274 .ssc_id = 1,
275 #if defined(CONFIG_MACH_AT91SAM9261EK)
276 .shortname = "AT91SAM9261-EK external DAC",
277 #else
278 .shortname = "AT91SAM9G10-EK external DAC",
279 #endif
280 };
281
282 #if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
at73c213_set_clk(struct at73c213_board_info * info)283 static void __init at73c213_set_clk(struct at73c213_board_info *info)
284 {
285 struct clk *pck2;
286 struct clk *plla;
287
288 pck2 = clk_get(NULL, "pck2");
289 plla = clk_get(NULL, "plla");
290
291 /* AT73C213 MCK Clock */
292 at91_set_B_periph(AT91_PIN_PB31, 0); /* PCK2 */
293
294 clk_set_parent(pck2, plla);
295 clk_put(plla);
296
297 info->dac_clk = pck2;
298 }
299 #else
at73c213_set_clk(struct at73c213_board_info * info)300 static void __init at73c213_set_clk(struct at73c213_board_info *info) {}
301 #endif
302
303 /*
304 * SPI devices
305 */
306 static struct spi_board_info ek_spi_devices[] = {
307 { /* DataFlash chip */
308 .modalias = "mtd_dataflash",
309 .chip_select = 0,
310 .max_speed_hz = 15 * 1000 * 1000,
311 .bus_num = 0,
312 },
313 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
314 {
315 .modalias = "ads7846",
316 .chip_select = 2,
317 .max_speed_hz = 125000 * 26, /* (max sample rate @ 3V) * (cmd + data + overhead) */
318 .bus_num = 0,
319 .platform_data = &ads_info,
320 .irq = AT91SAM9261_ID_IRQ0,
321 .controller_data = (void *) AT91_PIN_PA28, /* CS pin */
322 },
323 #endif
324 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
325 { /* DataFlash card - jumper (J12) configurable to CS3 or CS0 */
326 .modalias = "mtd_dataflash",
327 .chip_select = 3,
328 .max_speed_hz = 15 * 1000 * 1000,
329 .bus_num = 0,
330 },
331 #elif defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
332 { /* AT73C213 DAC */
333 .modalias = "at73c213",
334 .chip_select = 3,
335 .max_speed_hz = 10 * 1000 * 1000,
336 .bus_num = 0,
337 .mode = SPI_MODE_1,
338 .platform_data = &at73c213_data,
339 .controller_data = (void*) AT91_PIN_PA29, /* default for CS3 is PA6, but it must be PA29 */
340 },
341 #endif
342 };
343
344 #else /* CONFIG_SPI_ATMEL_* */
345 /* spi0 and mmc/sd share the same PIO pins: cannot be used at the same time */
346
347 /*
348 * MCI (SD/MMC)
349 * det_pin, wp_pin and vcc_pin are not connected
350 */
351 static struct at91_mmc_data __initdata ek_mmc_data = {
352 .wire4 = 1,
353 .det_pin = -EINVAL,
354 .wp_pin = -EINVAL,
355 .vcc_pin = -EINVAL,
356 };
357
358 #endif /* CONFIG_SPI_ATMEL_* */
359
360
361 /*
362 * LCD Controller
363 */
364 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
365
366 #if defined(CONFIG_FB_ATMEL_STN)
367
368 /* STN */
369 static struct fb_videomode at91_stn_modes[] = {
370 {
371 .name = "SP06Q002 @ 75",
372 .refresh = 75,
373 .xres = 320, .yres = 240,
374 .pixclock = KHZ2PICOS(1440),
375
376 .left_margin = 1, .right_margin = 1,
377 .upper_margin = 0, .lower_margin = 0,
378 .hsync_len = 1, .vsync_len = 1,
379
380 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
381 .vmode = FB_VMODE_NONINTERLACED,
382 },
383 };
384
385 static struct fb_monspecs at91fb_default_stn_monspecs = {
386 .manufacturer = "HIT",
387 .monitor = "SP06Q002",
388
389 .modedb = at91_stn_modes,
390 .modedb_len = ARRAY_SIZE(at91_stn_modes),
391 .hfmin = 15000,
392 .hfmax = 64000,
393 .vfmin = 50,
394 .vfmax = 150,
395 };
396
397 #define AT91SAM9261_DEFAULT_STN_LCDCON2 (ATMEL_LCDC_MEMOR_LITTLE \
398 | ATMEL_LCDC_DISTYPE_STNMONO \
399 | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE \
400 | ATMEL_LCDC_IFWIDTH_4 \
401 | ATMEL_LCDC_SCANMOD_SINGLE)
402
at91_lcdc_stn_power_control(int on)403 static void at91_lcdc_stn_power_control(int on)
404 {
405 /* backlight */
406 if (on) { /* power up */
407 at91_set_gpio_value(AT91_PIN_PC14, 0);
408 at91_set_gpio_value(AT91_PIN_PC15, 0);
409 } else { /* power down */
410 at91_set_gpio_value(AT91_PIN_PC14, 1);
411 at91_set_gpio_value(AT91_PIN_PC15, 1);
412 }
413 }
414
415 static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
416 .default_bpp = 1,
417 .default_dmacon = ATMEL_LCDC_DMAEN,
418 .default_lcdcon2 = AT91SAM9261_DEFAULT_STN_LCDCON2,
419 .default_monspecs = &at91fb_default_stn_monspecs,
420 .atmel_lcdfb_power_control = at91_lcdc_stn_power_control,
421 .guard_time = 1,
422 #if defined(CONFIG_MACH_AT91SAM9G10EK)
423 .lcd_wiring_mode = ATMEL_LCDC_WIRING_RGB,
424 #endif
425 };
426
427 #else
428
429 /* TFT */
430 static struct fb_videomode at91_tft_vga_modes[] = {
431 {
432 .name = "TX09D50VM1CCA @ 60",
433 .refresh = 60,
434 .xres = 240, .yres = 320,
435 .pixclock = KHZ2PICOS(4965),
436
437 .left_margin = 1, .right_margin = 33,
438 .upper_margin = 1, .lower_margin = 0,
439 .hsync_len = 5, .vsync_len = 1,
440
441 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
442 .vmode = FB_VMODE_NONINTERLACED,
443 },
444 };
445
446 static struct fb_monspecs at91fb_default_tft_monspecs = {
447 .manufacturer = "HIT",
448 .monitor = "TX09D50VM1CCA",
449
450 .modedb = at91_tft_vga_modes,
451 .modedb_len = ARRAY_SIZE(at91_tft_vga_modes),
452 .hfmin = 15000,
453 .hfmax = 64000,
454 .vfmin = 50,
455 .vfmax = 150,
456 };
457
458 #define AT91SAM9261_DEFAULT_TFT_LCDCON2 (ATMEL_LCDC_MEMOR_LITTLE \
459 | ATMEL_LCDC_DISTYPE_TFT \
460 | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
461
at91_lcdc_tft_power_control(int on)462 static void at91_lcdc_tft_power_control(int on)
463 {
464 if (on)
465 at91_set_gpio_value(AT91_PIN_PA12, 0); /* power up */
466 else
467 at91_set_gpio_value(AT91_PIN_PA12, 1); /* power down */
468 }
469
470 static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
471 .lcdcon_is_backlight = true,
472 .default_bpp = 16,
473 .default_dmacon = ATMEL_LCDC_DMAEN,
474 .default_lcdcon2 = AT91SAM9261_DEFAULT_TFT_LCDCON2,
475 .default_monspecs = &at91fb_default_tft_monspecs,
476 .atmel_lcdfb_power_control = at91_lcdc_tft_power_control,
477 .guard_time = 1,
478 #if defined(CONFIG_MACH_AT91SAM9G10EK)
479 .lcd_wiring_mode = ATMEL_LCDC_WIRING_RGB,
480 #endif
481 };
482 #endif
483
484 #else
485 static struct atmel_lcdfb_info __initdata ek_lcdc_data;
486 #endif
487
488
489 /*
490 * GPIO Buttons
491 */
492 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
493 static struct gpio_keys_button ek_buttons[] = {
494 {
495 .gpio = AT91_PIN_PA27,
496 .code = BTN_0,
497 .desc = "Button 0",
498 .active_low = 1,
499 .wakeup = 1,
500 },
501 {
502 .gpio = AT91_PIN_PA26,
503 .code = BTN_1,
504 .desc = "Button 1",
505 .active_low = 1,
506 .wakeup = 1,
507 },
508 {
509 .gpio = AT91_PIN_PA25,
510 .code = BTN_2,
511 .desc = "Button 2",
512 .active_low = 1,
513 .wakeup = 1,
514 },
515 {
516 .gpio = AT91_PIN_PA24,
517 .code = BTN_3,
518 .desc = "Button 3",
519 .active_low = 1,
520 .wakeup = 1,
521 }
522 };
523
524 static struct gpio_keys_platform_data ek_button_data = {
525 .buttons = ek_buttons,
526 .nbuttons = ARRAY_SIZE(ek_buttons),
527 };
528
529 static struct platform_device ek_button_device = {
530 .name = "gpio-keys",
531 .id = -1,
532 .num_resources = 0,
533 .dev = {
534 .platform_data = &ek_button_data,
535 }
536 };
537
ek_add_device_buttons(void)538 static void __init ek_add_device_buttons(void)
539 {
540 at91_set_gpio_input(AT91_PIN_PA27, 1); /* btn0 */
541 at91_set_deglitch(AT91_PIN_PA27, 1);
542 at91_set_gpio_input(AT91_PIN_PA26, 1); /* btn1 */
543 at91_set_deglitch(AT91_PIN_PA26, 1);
544 at91_set_gpio_input(AT91_PIN_PA25, 1); /* btn2 */
545 at91_set_deglitch(AT91_PIN_PA25, 1);
546 at91_set_gpio_input(AT91_PIN_PA24, 1); /* btn3 */
547 at91_set_deglitch(AT91_PIN_PA24, 1);
548
549 platform_device_register(&ek_button_device);
550 }
551 #else
ek_add_device_buttons(void)552 static void __init ek_add_device_buttons(void) {}
553 #endif
554
555 /*
556 * LEDs
557 */
558 static struct gpio_led ek_leds[] = {
559 { /* "bottom" led, green, userled1 to be defined */
560 .name = "ds7",
561 .gpio = AT91_PIN_PA14,
562 .active_low = 1,
563 .default_trigger = "none",
564 },
565 { /* "top" led, green, userled2 to be defined */
566 .name = "ds8",
567 .gpio = AT91_PIN_PA13,
568 .active_low = 1,
569 .default_trigger = "none",
570 },
571 { /* "power" led, yellow */
572 .name = "ds1",
573 .gpio = AT91_PIN_PA23,
574 .default_trigger = "heartbeat",
575 }
576 };
577
ek_board_init(void)578 static void __init ek_board_init(void)
579 {
580 /* Serial */
581 at91_add_device_serial();
582 /* USB Host */
583 at91_add_device_usbh(&ek_usbh_data);
584 /* USB Device */
585 at91_add_device_udc(&ek_udc_data);
586 /* I2C */
587 at91_add_device_i2c(NULL, 0);
588 /* NAND */
589 ek_add_device_nand();
590 /* DM9000 ethernet */
591 ek_add_device_dm9000();
592
593 /* spi0 and mmc/sd share the same PIO pins */
594 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
595 /* SPI */
596 at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
597 /* Touchscreen */
598 ek_add_device_ts();
599 /* SSC (to AT73C213) */
600 at73c213_set_clk(&at73c213_data);
601 at91_add_device_ssc(AT91SAM9261_ID_SSC1, ATMEL_SSC_TX);
602 #else
603 /* MMC */
604 at91_add_device_mmc(0, &ek_mmc_data);
605 #endif
606 /* LCD Controller */
607 at91_add_device_lcdc(&ek_lcdc_data);
608 /* Push Buttons */
609 ek_add_device_buttons();
610 /* LEDs */
611 at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
612 }
613
614 #if defined(CONFIG_MACH_AT91SAM9261EK)
615 MACHINE_START(AT91SAM9261EK, "Atmel AT91SAM9261-EK")
616 #else
617 MACHINE_START(AT91SAM9G10EK, "Atmel AT91SAM9G10-EK")
618 #endif
619 /* Maintainer: Atmel */
620 .timer = &at91sam926x_timer,
621 .map_io = at91_map_io,
622 .init_early = ek_init_early,
623 .init_irq = at91_init_irq_default,
624 .init_machine = ek_board_init,
625 MACHINE_END
626