Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
[pandora-kernel.git] / arch / arm / mach-at91 / board-sam9261ek.c
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/init.h>
24 #include <linux/mm.h>
25 #include <linux/module.h>
26 #include <linux/platform_device.h>
27 #include <linux/spi/spi.h>
28 #include <linux/spi/ads7846.h>
29 #include <linux/spi/at73c213.h>
30 #include <linux/clk.h>
31 #include <linux/dm9000.h>
32 #include <linux/fb.h>
33 #include <linux/gpio_keys.h>
34 #include <linux/input.h>
35
36 #include <video/atmel_lcdc.h>
37
38 #include <asm/setup.h>
39 #include <asm/mach-types.h>
40 #include <asm/irq.h>
41
42 #include <asm/mach/arch.h>
43 #include <asm/mach/map.h>
44 #include <asm/mach/irq.h>
45
46 #include <mach/hardware.h>
47 #include <mach/board.h>
48 #include <mach/gpio.h>
49 #include <mach/at91sam9_smc.h>
50 #include <mach/at91_shdwc.h>
51
52 #include "sam9_smc.h"
53 #include "generic.h"
54
55
56 static void __init ek_map_io(void)
57 {
58         /* Initialize processor: 18.432 MHz crystal */
59         at91sam9261_initialize(18432000);
60
61         /* Setup the LEDs */
62         at91_init_leds(AT91_PIN_PA13, AT91_PIN_PA14);
63
64         /* DBGU on ttyS0. (Rx & Tx only) */
65         at91_register_uart(0, 0, 0);
66
67         /* set serial console to ttyS0 (ie, DBGU) */
68         at91_set_serial_console(0);
69 }
70
71 static void __init ek_init_irq(void)
72 {
73         at91sam9261_init_interrupts(NULL);
74 }
75
76
77 /*
78  * DM9000 ethernet device
79  */
80 #if defined(CONFIG_DM9000)
81 static struct resource dm9000_resource[] = {
82         [0] = {
83                 .start  = AT91_CHIPSELECT_2,
84                 .end    = AT91_CHIPSELECT_2 + 3,
85                 .flags  = IORESOURCE_MEM
86         },
87         [1] = {
88                 .start  = AT91_CHIPSELECT_2 + 0x44,
89                 .end    = AT91_CHIPSELECT_2 + 0xFF,
90                 .flags  = IORESOURCE_MEM
91         },
92         [2] = {
93                 .start  = AT91_PIN_PC11,
94                 .end    = AT91_PIN_PC11,
95                 .flags  = IORESOURCE_IRQ
96                         | IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE,
97         }
98 };
99
100 static struct dm9000_plat_data dm9000_platdata = {
101         .flags          = DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM,
102 };
103
104 static struct platform_device dm9000_device = {
105         .name           = "dm9000",
106         .id             = 0,
107         .num_resources  = ARRAY_SIZE(dm9000_resource),
108         .resource       = dm9000_resource,
109         .dev            = {
110                 .platform_data  = &dm9000_platdata,
111         }
112 };
113
114 /*
115  * SMC timings for the DM9000.
116  * Note: These timings were calculated for MASTER_CLOCK = 100000000 according to the DM9000 timings.
117  */
118 static struct sam9_smc_config __initdata dm9000_smc_config = {
119         .ncs_read_setup         = 0,
120         .nrd_setup              = 2,
121         .ncs_write_setup        = 0,
122         .nwe_setup              = 2,
123
124         .ncs_read_pulse         = 8,
125         .nrd_pulse              = 4,
126         .ncs_write_pulse        = 8,
127         .nwe_pulse              = 4,
128
129         .read_cycle             = 16,
130         .write_cycle            = 16,
131
132         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE | AT91_SMC_DBW_16,
133         .tdf_cycles             = 1,
134 };
135
136 static void __init ek_add_device_dm9000(void)
137 {
138         /* Configure chip-select 2 (DM9000) */
139         sam9_smc_configure(2, &dm9000_smc_config);
140
141         /* Configure Reset signal as output */
142         at91_set_gpio_output(AT91_PIN_PC10, 0);
143
144         /* Configure Interrupt pin as input, no pull-up */
145         at91_set_gpio_input(AT91_PIN_PC11, 0);
146
147         platform_device_register(&dm9000_device);
148 }
149 #else
150 static void __init ek_add_device_dm9000(void) {}
151 #endif /* CONFIG_DM9000 */
152
153
154 /*
155  * USB Host Port
156  */
157 static struct at91_usbh_data __initdata ek_usbh_data = {
158         .ports          = 2,
159 };
160
161
162 /*
163  * USB Device Port
164  */
165 static struct at91_udc_data __initdata ek_udc_data = {
166         .vbus_pin       = AT91_PIN_PB29,
167         .pullup_pin     = 0,            /* pull-up driven by UDC */
168 };
169
170
171 /*
172  * NAND flash
173  */
174 static struct mtd_partition __initdata ek_nand_partition[] = {
175         {
176                 .name   = "Partition 1",
177                 .offset = 0,
178                 .size   = SZ_256K,
179         },
180         {
181                 .name   = "Partition 2",
182                 .offset = MTDPART_OFS_NXTBLK,
183                 .size   = MTDPART_SIZ_FULL,
184         },
185 };
186
187 static struct mtd_partition * __init nand_partitions(int size, int *num_partitions)
188 {
189         *num_partitions = ARRAY_SIZE(ek_nand_partition);
190         return ek_nand_partition;
191 }
192
193 static struct atmel_nand_data __initdata ek_nand_data = {
194         .ale            = 22,
195         .cle            = 21,
196 //      .det_pin        = ... not connected
197         .rdy_pin        = AT91_PIN_PC15,
198         .enable_pin     = AT91_PIN_PC14,
199         .partition_info = nand_partitions,
200 #if defined(CONFIG_MTD_NAND_ATMEL_BUSWIDTH_16)
201         .bus_width_16   = 1,
202 #else
203         .bus_width_16   = 0,
204 #endif
205 };
206
207 static struct sam9_smc_config __initdata ek_nand_smc_config = {
208         .ncs_read_setup         = 0,
209         .nrd_setup              = 1,
210         .ncs_write_setup        = 0,
211         .nwe_setup              = 1,
212
213         .ncs_read_pulse         = 3,
214         .nrd_pulse              = 3,
215         .ncs_write_pulse        = 3,
216         .nwe_pulse              = 3,
217
218         .read_cycle             = 5,
219         .write_cycle            = 5,
220
221         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
222         .tdf_cycles             = 2,
223 };
224
225 static void __init ek_add_device_nand(void)
226 {
227         /* setup bus-width (8 or 16) */
228         if (ek_nand_data.bus_width_16)
229                 ek_nand_smc_config.mode |= AT91_SMC_DBW_16;
230         else
231                 ek_nand_smc_config.mode |= AT91_SMC_DBW_8;
232
233         /* configure chip-select 3 (NAND) */
234         sam9_smc_configure(3, &ek_nand_smc_config);
235
236         at91_add_device_nand(&ek_nand_data);
237 }
238
239 /*
240  * SPI related devices
241  */
242 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
243
244 /*
245  * ADS7846 Touchscreen
246  */
247 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
248
249 static int ads7843_pendown_state(void)
250 {
251         return !at91_get_gpio_value(AT91_PIN_PC2);      /* Touchscreen PENIRQ */
252 }
253
254 static struct ads7846_platform_data ads_info = {
255         .model                  = 7843,
256         .x_min                  = 150,
257         .x_max                  = 3830,
258         .y_min                  = 190,
259         .y_max                  = 3830,
260         .vref_delay_usecs       = 100,
261         .x_plate_ohms           = 450,
262         .y_plate_ohms           = 250,
263         .pressure_max           = 15000,
264         .debounce_max           = 1,
265         .debounce_rep           = 0,
266         .debounce_tol           = (~0),
267         .get_pendown_state      = ads7843_pendown_state,
268 };
269
270 static void __init ek_add_device_ts(void)
271 {
272         at91_set_B_periph(AT91_PIN_PC2, 1);     /* External IRQ0, with pullup */
273         at91_set_gpio_input(AT91_PIN_PA11, 1);  /* Touchscreen BUSY signal */
274 }
275 #else
276 static void __init ek_add_device_ts(void) {}
277 #endif
278
279 /*
280  * Audio
281  */
282 static struct at73c213_board_info at73c213_data = {
283         .ssc_id         = 1,
284 #if defined(CONFIG_MACH_AT91SAM9261EK)
285         .shortname      = "AT91SAM9261-EK external DAC",
286 #else
287         .shortname      = "AT91SAM9G10-EK external DAC",
288 #endif
289 };
290
291 #if defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
292 static void __init at73c213_set_clk(struct at73c213_board_info *info)
293 {
294         struct clk *pck2;
295         struct clk *plla;
296
297         pck2 = clk_get(NULL, "pck2");
298         plla = clk_get(NULL, "plla");
299
300         /* AT73C213 MCK Clock */
301         at91_set_B_periph(AT91_PIN_PB31, 0);    /* PCK2 */
302
303         clk_set_parent(pck2, plla);
304         clk_put(plla);
305
306         info->dac_clk = pck2;
307 }
308 #else
309 static void __init at73c213_set_clk(struct at73c213_board_info *info) {}
310 #endif
311
312 /*
313  * SPI devices
314  */
315 static struct spi_board_info ek_spi_devices[] = {
316         {       /* DataFlash chip */
317                 .modalias       = "mtd_dataflash",
318                 .chip_select    = 0,
319                 .max_speed_hz   = 15 * 1000 * 1000,
320                 .bus_num        = 0,
321         },
322 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
323         {
324                 .modalias       = "ads7846",
325                 .chip_select    = 2,
326                 .max_speed_hz   = 125000 * 26,  /* (max sample rate @ 3V) * (cmd + data + overhead) */
327                 .bus_num        = 0,
328                 .platform_data  = &ads_info,
329                 .irq            = AT91SAM9261_ID_IRQ0,
330                 .controller_data = (void *) AT91_PIN_PA28,      /* CS pin */
331         },
332 #endif
333 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
334         {       /* DataFlash card - jumper (J12) configurable to CS3 or CS0 */
335                 .modalias       = "mtd_dataflash",
336                 .chip_select    = 3,
337                 .max_speed_hz   = 15 * 1000 * 1000,
338                 .bus_num        = 0,
339         },
340 #elif defined(CONFIG_SND_AT73C213) || defined(CONFIG_SND_AT73C213_MODULE)
341         {       /* AT73C213 DAC */
342                 .modalias       = "at73c213",
343                 .chip_select    = 3,
344                 .max_speed_hz   = 10 * 1000 * 1000,
345                 .bus_num        = 0,
346                 .mode           = SPI_MODE_1,
347                 .platform_data  = &at73c213_data,
348                 .controller_data = (void*) AT91_PIN_PA29,       /* default for CS3 is PA6, but it must be PA29 */
349         },
350 #endif
351 };
352
353 #else /* CONFIG_SPI_ATMEL_* */
354 /* spi0 and mmc/sd share the same PIO pins: cannot be used at the same time */
355
356 /*
357  * MCI (SD/MMC)
358  * det_pin, wp_pin and vcc_pin are not connected
359  */
360 static struct at91_mmc_data __initdata ek_mmc_data = {
361         .wire4          = 1,
362 };
363
364 #endif /* CONFIG_SPI_ATMEL_* */
365
366
367 /*
368  * LCD Controller
369  */
370 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
371
372 #if defined(CONFIG_FB_ATMEL_STN)
373
374 /* STN */
375 static struct fb_videomode at91_stn_modes[] = {
376         {
377                 .name           = "SP06Q002 @ 75",
378                 .refresh        = 75,
379                 .xres           = 320,          .yres           = 240,
380                 .pixclock       = KHZ2PICOS(1440),
381
382                 .left_margin    = 1,            .right_margin   = 1,
383                 .upper_margin   = 0,            .lower_margin   = 0,
384                 .hsync_len      = 1,            .vsync_len      = 1,
385
386                 .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
387                 .vmode          = FB_VMODE_NONINTERLACED,
388         },
389 };
390
391 static struct fb_monspecs at91fb_default_stn_monspecs = {
392         .manufacturer   = "HIT",
393         .monitor        = "SP06Q002",
394
395         .modedb         = at91_stn_modes,
396         .modedb_len     = ARRAY_SIZE(at91_stn_modes),
397         .hfmin          = 15000,
398         .hfmax          = 64000,
399         .vfmin          = 50,
400         .vfmax          = 150,
401 };
402
403 #define AT91SAM9261_DEFAULT_STN_LCDCON2 (ATMEL_LCDC_MEMOR_LITTLE \
404                                         | ATMEL_LCDC_DISTYPE_STNMONO \
405                                         | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE \
406                                         | ATMEL_LCDC_IFWIDTH_4 \
407                                         | ATMEL_LCDC_SCANMOD_SINGLE)
408
409 static void at91_lcdc_stn_power_control(int on)
410 {
411         /* backlight */
412         if (on) {       /* power up */
413                 at91_set_gpio_value(AT91_PIN_PC14, 0);
414                 at91_set_gpio_value(AT91_PIN_PC15, 0);
415         } else {        /* power down */
416                 at91_set_gpio_value(AT91_PIN_PC14, 1);
417                 at91_set_gpio_value(AT91_PIN_PC15, 1);
418         }
419 }
420
421 static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
422         .default_bpp                    = 1,
423         .default_dmacon                 = ATMEL_LCDC_DMAEN,
424         .default_lcdcon2                = AT91SAM9261_DEFAULT_STN_LCDCON2,
425         .default_monspecs               = &at91fb_default_stn_monspecs,
426         .atmel_lcdfb_power_control      = at91_lcdc_stn_power_control,
427         .guard_time                     = 1,
428 #if defined(CONFIG_MACH_AT91SAM9G10EK)
429         .lcd_wiring_mode                = ATMEL_LCDC_WIRING_RGB,
430 #endif
431 };
432
433 #else
434
435 /* TFT */
436 static struct fb_videomode at91_tft_vga_modes[] = {
437         {
438                 .name           = "TX09D50VM1CCA @ 60",
439                 .refresh        = 60,
440                 .xres           = 240,          .yres           = 320,
441                 .pixclock       = KHZ2PICOS(4965),
442
443                 .left_margin    = 1,            .right_margin   = 33,
444                 .upper_margin   = 1,            .lower_margin   = 0,
445                 .hsync_len      = 5,            .vsync_len      = 1,
446
447                 .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
448                 .vmode          = FB_VMODE_NONINTERLACED,
449         },
450 };
451
452 static struct fb_monspecs at91fb_default_tft_monspecs = {
453         .manufacturer   = "HIT",
454         .monitor        = "TX09D50VM1CCA",
455
456         .modedb         = at91_tft_vga_modes,
457         .modedb_len     = ARRAY_SIZE(at91_tft_vga_modes),
458         .hfmin          = 15000,
459         .hfmax          = 64000,
460         .vfmin          = 50,
461         .vfmax          = 150,
462 };
463
464 #define AT91SAM9261_DEFAULT_TFT_LCDCON2 (ATMEL_LCDC_MEMOR_LITTLE \
465                                         | ATMEL_LCDC_DISTYPE_TFT    \
466                                         | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
467
468 static void at91_lcdc_tft_power_control(int on)
469 {
470         if (on)
471                 at91_set_gpio_value(AT91_PIN_PA12, 0);  /* power up */
472         else
473                 at91_set_gpio_value(AT91_PIN_PA12, 1);  /* power down */
474 }
475
476 static struct atmel_lcdfb_info __initdata ek_lcdc_data = {
477         .lcdcon_is_backlight            = true,
478         .default_bpp                    = 16,
479         .default_dmacon                 = ATMEL_LCDC_DMAEN,
480         .default_lcdcon2                = AT91SAM9261_DEFAULT_TFT_LCDCON2,
481         .default_monspecs               = &at91fb_default_tft_monspecs,
482         .atmel_lcdfb_power_control      = at91_lcdc_tft_power_control,
483         .guard_time                     = 1,
484 #if defined(CONFIG_MACH_AT91SAM9G10EK)
485         .lcd_wiring_mode                = ATMEL_LCDC_WIRING_RGB,
486 #endif
487 };
488 #endif
489
490 #else
491 static struct atmel_lcdfb_info __initdata ek_lcdc_data;
492 #endif
493
494
495 /*
496  * GPIO Buttons
497  */
498 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
499 static struct gpio_keys_button ek_buttons[] = {
500         {
501                 .gpio           = AT91_PIN_PA27,
502                 .code           = BTN_0,
503                 .desc           = "Button 0",
504                 .active_low     = 1,
505                 .wakeup         = 1,
506         },
507         {
508                 .gpio           = AT91_PIN_PA26,
509                 .code           = BTN_1,
510                 .desc           = "Button 1",
511                 .active_low     = 1,
512                 .wakeup         = 1,
513         },
514         {
515                 .gpio           = AT91_PIN_PA25,
516                 .code           = BTN_2,
517                 .desc           = "Button 2",
518                 .active_low     = 1,
519                 .wakeup         = 1,
520         },
521         {
522                 .gpio           = AT91_PIN_PA24,
523                 .code           = BTN_3,
524                 .desc           = "Button 3",
525                 .active_low     = 1,
526                 .wakeup         = 1,
527         }
528 };
529
530 static struct gpio_keys_platform_data ek_button_data = {
531         .buttons        = ek_buttons,
532         .nbuttons       = ARRAY_SIZE(ek_buttons),
533 };
534
535 static struct platform_device ek_button_device = {
536         .name           = "gpio-keys",
537         .id             = -1,
538         .num_resources  = 0,
539         .dev            = {
540                 .platform_data  = &ek_button_data,
541         }
542 };
543
544 static void __init ek_add_device_buttons(void)
545 {
546         at91_set_gpio_input(AT91_PIN_PA27, 1);  /* btn0 */
547         at91_set_deglitch(AT91_PIN_PA27, 1);
548         at91_set_gpio_input(AT91_PIN_PA26, 1);  /* btn1 */
549         at91_set_deglitch(AT91_PIN_PA26, 1);
550         at91_set_gpio_input(AT91_PIN_PA25, 1);  /* btn2 */
551         at91_set_deglitch(AT91_PIN_PA25, 1);
552         at91_set_gpio_input(AT91_PIN_PA24, 1);  /* btn3 */
553         at91_set_deglitch(AT91_PIN_PA24, 1);
554
555         platform_device_register(&ek_button_device);
556 }
557 #else
558 static void __init ek_add_device_buttons(void) {}
559 #endif
560
561 /*
562  * LEDs
563  */
564 static struct gpio_led ek_leds[] = {
565         {       /* "bottom" led, green, userled1 to be defined */
566                 .name                   = "ds7",
567                 .gpio                   = AT91_PIN_PA14,
568                 .active_low             = 1,
569                 .default_trigger        = "none",
570         },
571         {       /* "top" led, green, userled2 to be defined */
572                 .name                   = "ds8",
573                 .gpio                   = AT91_PIN_PA13,
574                 .active_low             = 1,
575                 .default_trigger        = "none",
576         },
577         {       /* "power" led, yellow */
578                 .name                   = "ds1",
579                 .gpio                   = AT91_PIN_PA23,
580                 .default_trigger        = "heartbeat",
581         }
582 };
583
584 static void __init ek_board_init(void)
585 {
586         /* Serial */
587         at91_add_device_serial();
588         /* USB Host */
589         at91_add_device_usbh(&ek_usbh_data);
590         /* USB Device */
591         at91_add_device_udc(&ek_udc_data);
592         /* I2C */
593         at91_add_device_i2c(NULL, 0);
594         /* NAND */
595         ek_add_device_nand();
596         /* DM9000 ethernet */
597         ek_add_device_dm9000();
598
599         /* spi0 and mmc/sd share the same PIO pins */
600 #if defined(CONFIG_SPI_ATMEL) || defined(CONFIG_SPI_ATMEL_MODULE)
601         /* SPI */
602         at91_add_device_spi(ek_spi_devices, ARRAY_SIZE(ek_spi_devices));
603         /* Touchscreen */
604         ek_add_device_ts();
605         /* SSC (to AT73C213) */
606         at73c213_set_clk(&at73c213_data);
607         at91_add_device_ssc(AT91SAM9261_ID_SSC1, ATMEL_SSC_TX);
608 #else
609         /* MMC */
610         at91_add_device_mmc(0, &ek_mmc_data);
611 #endif
612         /* LCD Controller */
613         at91_add_device_lcdc(&ek_lcdc_data);
614         /* Push Buttons */
615         ek_add_device_buttons();
616         /* LEDs */
617         at91_gpio_leds(ek_leds, ARRAY_SIZE(ek_leds));
618 }
619
620 #if defined(CONFIG_MACH_AT91SAM9261EK)
621 MACHINE_START(AT91SAM9261EK, "Atmel AT91SAM9261-EK")
622 #else
623 MACHINE_START(AT91SAM9G10EK, "Atmel AT91SAM9G10-EK")
624 #endif
625         /* Maintainer: Atmel */
626         .boot_params    = AT91_SDRAM_BASE + 0x100,
627         .timer          = &at91sam926x_timer,
628         .map_io         = ek_map_io,
629         .init_irq       = ek_init_irq,
630         .init_machine   = ek_board_init,
631 MACHINE_END