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board-sam9261ek.c
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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/at91_aic.h>
50 #include <mach/at91sam9_smc.h>
51 #include <mach/at91_shdwc.h>
52 #include <mach/system_rev.h>
53 
54 #include "sam9_smc.h"
55 #include "generic.h"
56 
57 
58 static void __init ek_init_early(void)
59 {
60  /* Initialize processor: 18.432 MHz crystal */
61  at91_initialize(18432000);
62 }
63 
64 /*
65  * DM9000 ethernet device
66  */
67 #if defined(CONFIG_DM9000)
68 static struct resource dm9000_resource[] = {
69  [0] = {
70  .start = AT91_CHIPSELECT_2,
71  .end = AT91_CHIPSELECT_2 + 3,
72  .flags = IORESOURCE_MEM
73  },
74  [1] = {
75  .start = AT91_CHIPSELECT_2 + 0x44,
76  .end = AT91_CHIPSELECT_2 + 0xFF,
77  .flags = IORESOURCE_MEM
78  },
79  [2] = {
80  .flags = IORESOURCE_IRQ
81  | IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE,
82  }
83 };
84 
85 static struct dm9000_plat_data dm9000_platdata = {
86  .flags = DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM,
87 };
88 
89 static struct platform_device dm9000_device = {
90  .name = "dm9000",
91  .id = 0,
92  .num_resources = ARRAY_SIZE(dm9000_resource),
93  .resource = dm9000_resource,
94  .dev = {
95  .platform_data = &dm9000_platdata,
96  }
97 };
98 
99 /*
100  * SMC timings for the DM9000.
101  * Note: These timings were calculated for MASTER_CLOCK = 100000000 according to the DM9000 timings.
102  */
103 static struct sam9_smc_config __initdata dm9000_smc_config = {
104  .ncs_read_setup = 0,
105  .nrd_setup = 2,
106  .ncs_write_setup = 0,
107  .nwe_setup = 2,
108 
109  .ncs_read_pulse = 8,
110  .nrd_pulse = 4,
111  .ncs_write_pulse = 8,
112  .nwe_pulse = 4,
113 
114  .read_cycle = 16,
115  .write_cycle = 16,
116 
117  .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE | AT91_SMC_DBW_16,
118  .tdf_cycles = 1,
119 };
120 
121 static void __init ek_add_device_dm9000(void)
122 {
123  struct resource *r = &dm9000_resource[2];
124 
125  /* Configure chip-select 2 (DM9000) */
126  sam9_smc_configure(0, 2, &dm9000_smc_config);
127 
128  /* Configure Reset signal as output */
129  at91_set_gpio_output(AT91_PIN_PC10, 0);
130 
131  /* Configure Interrupt pin as input, no pull-up */
132  at91_set_gpio_input(AT91_PIN_PC11, 0);
133 
134  r->start = r->end = gpio_to_irq(AT91_PIN_PC11);
135  platform_device_register(&dm9000_device);
136 }
137 #else
138 static void __init ek_add_device_dm9000(void) {}
139 #endif /* CONFIG_DM9000 */
140 
141 
142 /*
143  * USB Host Port
144  */
145 static struct at91_usbh_data __initdata ek_usbh_data = {
146  .ports = 2,
147  .vbus_pin = {-EINVAL, -EINVAL},
148  .overcurrent_pin= {-EINVAL, -EINVAL},
149 };
150 
151 
152 /*
153  * USB Device Port
154  */
155 static struct at91_udc_data __initdata ek_udc_data = {
156  .vbus_pin = AT91_PIN_PB29,
157  .pullup_pin = -EINVAL, /* pull-up driven by UDC */
158 };
159 
160 
161 /*
162  * NAND flash
163  */
164 static struct mtd_partition __initdata ek_nand_partition[] = {
165  {
166  .name = "Partition 1",
167  .offset = 0,
168  .size = SZ_256K,
169  },
170  {
171  .name = "Partition 2",
172  .offset = MTDPART_OFS_NXTBLK,
173  .size = MTDPART_SIZ_FULL,
174  },
175 };
176 
177 static struct atmel_nand_data __initdata ek_nand_data = {
178  .ale = 22,
179  .cle = 21,
180  .det_pin = -EINVAL,
181  .rdy_pin = AT91_PIN_PC15,
182  .enable_pin = AT91_PIN_PC14,
183  .ecc_mode = NAND_ECC_SOFT,
184  .on_flash_bbt = 1,
185  .parts = ek_nand_partition,
186  .num_parts = ARRAY_SIZE(ek_nand_partition),
187 };
188 
189 static struct sam9_smc_config __initdata ek_nand_smc_config = {
190  .ncs_read_setup = 0,
191  .nrd_setup = 1,
192  .ncs_write_setup = 0,
193  .nwe_setup = 1,
194 
195  .ncs_read_pulse = 3,
196  .nrd_pulse = 3,
197  .ncs_write_pulse = 3,
198  .nwe_pulse = 3,
199 
200  .read_cycle = 5,
201  .write_cycle = 5,
202 
203  .mode = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
204  .tdf_cycles = 2,
205 };
206 
207 static void __init ek_add_device_nand(void)
208 {
209  ek_nand_data.bus_width_16 = board_have_nand_16bit();
210  /* setup bus-width (8 or 16) */
211  if (ek_nand_data.bus_width_16)
212  ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
213  else
214  ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
215 
216  /* configure chip-select 3 (NAND) */
217  sam9_smc_configure(0, 3, &ek_nand_smc_config);
218 
219  at91_add_device_nand(&ek_nand_data);
220 }
221 
222 /*
223  * SPI related devices
224  */
225 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
226 
227 /*
228  * ADS7846 Touchscreen
229  */
230 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
231 
232 static int ads7843_pendown_state(void)
233 {
234  return !at91_get_gpio_value(AT91_PIN_PC2); /* Touchscreen PENIRQ */
235 }
236 
237 static struct ads7846_platform_data ads_info = {
238  .model = 7843,
239  .x_min = 150,
240  .x_max = 3830,
241  .y_min = 190,
242  .y_max = 3830,
243  .vref_delay_usecs = 100,
244  .x_plate_ohms = 450,
245  .y_plate_ohms = 250,
246  .pressure_max = 15000,
247  .debounce_max = 1,
248  .debounce_rep = 0,
249  .debounce_tol = (~0),
250  .get_pendown_state = ads7843_pendown_state,
251 };
252 
253 static void __init ek_add_device_ts(void)
254 {
255  at91_set_B_periph(AT91_PIN_PC2, 1); /* External IRQ0, with pullup */
256  at91_set_gpio_input(AT91_PIN_PA11, 1); /* Touchscreen BUSY signal */
257 }
258 #else
259 static void __init ek_add_device_ts(void) {}
260 #endif
261 
262 /*
263  * Audio
264  */
265 static struct at73c213_board_info at73c213_data = {
266  .ssc_id = 1,
267 #if defined(CONFIG_MACH_AT91SAM9261EK)
268  .shortname = "AT91SAM9261-EK external DAC",
269 #else
270  .shortname = "AT91SAM9G10-EK external DAC",
271 #endif
272 };
273 
274 #if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
275 static void __init at73c213_set_clk(struct at73c213_board_info *info)
276 {
277  struct clk *pck2;
278  struct clk *plla;
279 
280  pck2 = clk_get(NULL, "pck2");
281  plla = clk_get(NULL, "plla");
282 
283  /* AT73C213 MCK Clock */
284  at91_set_B_periph(AT91_PIN_PB31, 0); /* PCK2 */
285 
286  clk_set_parent(pck2, plla);
287  clk_put(plla);
288 
289  info->dac_clk = pck2;
290 }
291 #else
292 static void __init at73c213_set_clk(struct at73c213_board_info *info) {}
293 #endif
294 
295 /*
296  * SPI devices
297  */
298 static struct spi_board_info ek_spi_devices[] = {
299  { /* DataFlash chip */
300  .modalias = "mtd_dataflash",
301  .chip_select = 0,
302  .max_speed_hz = 15 * 1000 * 1000,
303  .bus_num = 0,
304  },
305 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
306  {
307  .modalias = "ads7846",
308  .chip_select = 2,
309  .max_speed_hz = 125000 * 26, /* (max sample rate @ 3V) * (cmd + data + overhead) */
310  .bus_num = 0,
311  .platform_data = &ads_info,
312  .irq = NR_IRQS_LEGACY + AT91SAM9261_ID_IRQ0,
313  .controller_data = (void *) AT91_PIN_PA28, /* CS pin */
314  },
315 #endif
316 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
317  { /* DataFlash card - jumper (J12) configurable to CS3 or CS0 */
318  .modalias = "mtd_dataflash",
319  .chip_select = 3,
320  .max_speed_hz = 15 * 1000 * 1000,
321  .bus_num = 0,
322  },
323 #elif defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
324  { /* AT73C213 DAC */
325  .modalias = "at73c213",
326  .chip_select = 3,
327  .max_speed_hz = 10 * 1000 * 1000,
328  .bus_num = 0,
329  .mode = SPI_MODE_1,
330  .platform_data = &at73c213_data,
331  .controller_data = (void*) AT91_PIN_PA29, /* default for CS3 is PA6, but it must be PA29 */
332  },
333 #endif
334 };
335 
336 #else /* CONFIG_SPI_ATMEL_* */
337 /* spi0 and mmc/sd share the same PIO pins: cannot be used at the same time */
338 
339 /*
340  * MCI (SD/MMC)
341  * det_pin, wp_pin and vcc_pin are not connected
342  */
343 static struct mci_platform_data __initdata mci0_data = {
344  .slot[0] = {
345  .bus_width = 4,
346  .detect_pin = -EINVAL,
347  .wp_pin = -EINVAL,
348  },
349 };
350 
351 #endif /* CONFIG_SPI_ATMEL_* */
352 
353 
354 /*
355  * LCD Controller
356  */
357 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
358 
359 #if defined(CONFIG_FB_ATMEL_STN)
360 
361 /* STN */
362 static struct fb_videomode at91_stn_modes[] = {
363  {
364  .name = "SP06Q002 @ 75",
365  .refresh = 75,
366  .xres = 320, .yres = 240,
367  .pixclock = KHZ2PICOS(1440),
368 
369  .left_margin = 1, .right_margin = 1,
370  .upper_margin = 0, .lower_margin = 0,
371  .hsync_len = 1, .vsync_len = 1,
372 
373  .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
374  .vmode = FB_VMODE_NONINTERLACED,
375  },
376 };
377 
378 static struct fb_monspecs at91fb_default_stn_monspecs = {
379  .manufacturer = "HIT",
380  .monitor = "SP06Q002",
381 
382  .modedb = at91_stn_modes,
383  .modedb_len = ARRAY_SIZE(at91_stn_modes),
384  .hfmin = 15000,
385  .hfmax = 64000,
386  .vfmin = 50,
387  .vfmax = 150,
388 };
389 
390 #define AT91SAM9261_DEFAULT_STN_LCDCON2 (ATMEL_LCDC_MEMOR_LITTLE \
391  | ATMEL_LCDC_DISTYPE_STNMONO \
392  | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE \
393  | ATMEL_LCDC_IFWIDTH_4 \
394  | ATMEL_LCDC_SCANMOD_SINGLE)
395 
396 static void at91_lcdc_stn_power_control(int on)
397 {
398  /* backlight */
399  if (on) { /* power up */
400  at91_set_gpio_value(AT91_PIN_PC14, 0);
401  at91_set_gpio_value(AT91_PIN_PC15, 0);
402  } else { /* power down */
403  at91_set_gpio_value(AT91_PIN_PC14, 1);
404  at91_set_gpio_value(AT91_PIN_PC15, 1);
405  }
406 }
407 
408 static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
409  .default_bpp = 1,
410  .default_dmacon = ATMEL_LCDC_DMAEN,
411  .default_lcdcon2 = AT91SAM9261_DEFAULT_STN_LCDCON2,
412  .default_monspecs = &at91fb_default_stn_monspecs,
413  .atmel_lcdfb_power_control = at91_lcdc_stn_power_control,
414  .guard_time = 1,
415 #if defined(CONFIG_MACH_AT91SAM9G10EK)
416  .lcd_wiring_mode = ATMEL_LCDC_WIRING_RGB,
417 #endif
418 };
419 
420 #else
421 
422 /* TFT */
423 static struct fb_videomode at91_tft_vga_modes[] = {
424  {
425  .name = "TX09D50VM1CCA @ 60",
426  .refresh = 60,
427  .xres = 240, .yres = 320,
428  .pixclock = KHZ2PICOS(4965),
429 
430  .left_margin = 1, .right_margin = 33,
431  .upper_margin = 1, .lower_margin = 0,
432  .hsync_len = 5, .vsync_len = 1,
433 
434  .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
435  .vmode = FB_VMODE_NONINTERLACED,
436  },
437 };
438 
439 static struct fb_monspecs at91fb_default_tft_monspecs = {
440  .manufacturer = "HIT",
441  .monitor = "TX09D50VM1CCA",
442 
443  .modedb = at91_tft_vga_modes,
444  .modedb_len = ARRAY_SIZE(at91_tft_vga_modes),
445  .hfmin = 15000,
446  .hfmax = 64000,
447  .vfmin = 50,
448  .vfmax = 150,
449 };
450 
451 #define AT91SAM9261_DEFAULT_TFT_LCDCON2 (ATMEL_LCDC_MEMOR_LITTLE \
452  | ATMEL_LCDC_DISTYPE_TFT \
453  | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
454 
455 static void at91_lcdc_tft_power_control(int on)
456 {
457  if (on)
458  at91_set_gpio_value(AT91_PIN_PA12, 0); /* power up */
459  else
460  at91_set_gpio_value(AT91_PIN_PA12, 1); /* power down */
461 }
462 
463 static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
464  .lcdcon_is_backlight = true,
465  .default_bpp = 16,
466  .default_dmacon = ATMEL_LCDC_DMAEN,
467  .default_lcdcon2 = AT91SAM9261_DEFAULT_TFT_LCDCON2,
468  .default_monspecs = &at91fb_default_tft_monspecs,
469  .atmel_lcdfb_power_control = at91_lcdc_tft_power_control,
470  .guard_time = 1,
471 #if defined(CONFIG_MACH_AT91SAM9G10EK)
472  .lcd_wiring_mode = ATMEL_LCDC_WIRING_RGB,
473 #endif
474 };
475 #endif
476 
477 #else
478 static struct atmel_lcdfb_info __initdata ek_lcdc_data;
479 #endif
480 
481 
482 /*
483  * GPIO Buttons
484  */
485 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
486 static struct gpio_keys_button ek_buttons[] = {
487  {
488  .gpio = AT91_PIN_PA27,
489  .code = BTN_0,
490  .desc = "Button 0",
491  .active_low = 1,
492  .wakeup = 1,
493  },
494  {
495  .gpio = AT91_PIN_PA26,
496  .code = BTN_1,
497  .desc = "Button 1",
498  .active_low = 1,
499  .wakeup = 1,
500  },
501  {
502  .gpio = AT91_PIN_PA25,
503  .code = BTN_2,
504  .desc = "Button 2",
505  .active_low = 1,
506  .wakeup = 1,
507  },
508  {
509  .gpio = AT91_PIN_PA24,
510  .code = BTN_3,
511  .desc = "Button 3",
512  .active_low = 1,
513  .wakeup = 1,
514  }
515 };
516 
517 static struct gpio_keys_platform_data ek_button_data = {
518  .buttons = ek_buttons,
519  .nbuttons = ARRAY_SIZE(ek_buttons),
520 };
521 
522 static struct platform_device ek_button_device = {
523  .name = "gpio-keys",
524  .id = -1,
525  .num_resources = 0,
526  .dev = {
527  .platform_data = &ek_button_data,
528  }
529 };
530 
531 static void __init ek_add_device_buttons(void)
532 {
533  at91_set_gpio_input(AT91_PIN_PA27, 1); /* btn0 */
534  at91_set_deglitch(AT91_PIN_PA27, 1);
535  at91_set_gpio_input(AT91_PIN_PA26, 1); /* btn1 */
536  at91_set_deglitch(AT91_PIN_PA26, 1);
537  at91_set_gpio_input(AT91_PIN_PA25, 1); /* btn2 */
538  at91_set_deglitch(AT91_PIN_PA25, 1);
539  at91_set_gpio_input(AT91_PIN_PA24, 1); /* btn3 */
540  at91_set_deglitch(AT91_PIN_PA24, 1);
541 
542  platform_device_register(&ek_button_device);
543 }
544 #else
545 static void __init ek_add_device_buttons(void) {}
546 #endif
547 
548 /*
549  * LEDs
550  */
551 static struct gpio_led ek_leds[] = {
552  { /* "bottom" led, green, userled1 to be defined */
553  .name = "ds7",
554  .gpio = AT91_PIN_PA14,
555  .active_low = 1,
556  .default_trigger = "none",
557  },
558  { /* "top" led, green, userled2 to be defined */
559  .name = "ds8",
560  .gpio = AT91_PIN_PA13,
561  .active_low = 1,
562  .default_trigger = "none",
563  },
564  { /* "power" led, yellow */
565  .name = "ds1",
566  .gpio = AT91_PIN_PA23,
567  .default_trigger = "heartbeat",
568  }
569 };
570 
571 static void __init ek_board_init(void)
572 {
573  /* Serial */
574  /* DBGU on ttyS0. (Rx & Tx only) */
575  at91_register_uart(0, 0, 0);
576  at91_add_device_serial();
577  /* USB Host */
578  at91_add_device_usbh(&ek_usbh_data);
579  /* USB Device */
580  at91_add_device_udc(&ek_udc_data);
581  /* I2C */
582  at91_add_device_i2c(NULL, 0);
583  /* NAND */
584  ek_add_device_nand();
585  /* DM9000 ethernet */
586  ek_add_device_dm9000();
587 
588  /* spi0 and mmc/sd share the same PIO pins */
589 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
590  /* SPI */
591  at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
592  /* Touchscreen */
593  ek_add_device_ts();
594  /* SSC (to AT73C213) */
595  at73c213_set_clk(&at73c213_data);
596  at91_add_device_ssc(AT91SAM9261_ID_SSC1, ATMEL_SSC_TX);
597 #else
598  /* MMC */
599  at91_add_device_mci(0, &mci0_data);
600 #endif
601  /* LCD Controller */
602  at91_add_device_lcdc(&ek_lcdc_data);
603  /* Push Buttons */
604  ek_add_device_buttons();
605  /* LEDs */
606  at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
607 }
608 
609 #if defined(CONFIG_MACH_AT91SAM9261EK)
610 MACHINE_START(AT91SAM9261EK, "Atmel AT91SAM9261-EK")
611 #else
612 MACHINE_START(AT91SAM9G10EK, "Atmel AT91SAM9G10-EK")
613 #endif
614  /* Maintainer: Atmel */
615  .timer = &at91sam926x_timer,
616  .map_io = at91_map_io,
617  .handle_irq = at91_aic_handle_irq,
618  .init_early = ek_init_early,
619  .init_irq = at91_init_irq_default,
620  .init_machine = ek_board_init,
621 MACHINE_END
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