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TOMOYO Linux Cross Reference
Linux/arch/arm/mach-at91/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/at91sam9_smc.h>
 49 #include <mach/system_rev.h>
 50 
 51 #include "at91_aic.h"
 52 #include "at91_shdwc.h"
 53 #include "board.h"
 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         .init_time      = at91sam926x_pit_init,
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
622 

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