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TOMOYO Linux Cross Reference
Linux/arch/arm/mach-at91/board-gsia18s.c

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  1 /*
  2  *  Copyright (C) 2010 Christian Glindkamp <christian.glindkamp@taskit.de>
  3  *                     taskit GmbH
  4  *                2010 Igor Plyatov <plyatov@gmail.com>
  5  *                     GeoSIG Ltd
  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/platform_device.h>
 23 #include <linux/gpio.h>
 24 #include <linux/w1-gpio.h>
 25 #include <linux/i2c.h>
 26 #include <linux/i2c/pcf857x.h>
 27 #include <linux/gpio_keys.h>
 28 #include <linux/input.h>
 29 
 30 #include <asm/mach-types.h>
 31 #include <asm/mach/arch.h>
 32 
 33 #include <mach/at91sam9_smc.h>
 34 
 35 #include "at91_aic.h"
 36 #include "board.h"
 37 #include "sam9_smc.h"
 38 #include "generic.h"
 39 #include "gsia18s.h"
 40 #include "stamp9g20.h"
 41 
 42 static void __init gsia18s_init_early(void)
 43 {
 44         stamp9g20_init_early();
 45 }
 46 
 47 /*
 48  * Two USB Host ports
 49  */
 50 static struct at91_usbh_data __initdata usbh_data = {
 51         .ports          = 2,
 52         .vbus_pin       = {-EINVAL, -EINVAL},
 53         .overcurrent_pin= {-EINVAL, -EINVAL},
 54 };
 55 
 56 /*
 57  * USB Device port
 58  */
 59 static struct at91_udc_data __initdata udc_data = {
 60         .vbus_pin       = AT91_PIN_PA22,
 61         .pullup_pin     = -EINVAL,              /* pull-up driven by UDC */
 62 };
 63 
 64 /*
 65  * MACB Ethernet device
 66  */
 67 static struct macb_platform_data __initdata macb_data = {
 68         .phy_irq_pin    = AT91_PIN_PA28,
 69         .is_rmii        = 1,
 70 };
 71 
 72 /*
 73  * LEDs and GPOs
 74  */
 75 static struct gpio_led gpio_leds[] = {
 76         {
 77                 .name                   = "gpo:spi1reset",
 78                 .gpio                   = AT91_PIN_PC1,
 79                 .active_low             = 0,
 80                 .default_trigger        = "none",
 81                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
 82         },
 83         {
 84                 .name                   = "gpo:trig_net_out",
 85                 .gpio                   = AT91_PIN_PB20,
 86                 .active_low             = 0,
 87                 .default_trigger        = "none",
 88                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
 89         },
 90         {
 91                 .name                   = "gpo:trig_net_dir",
 92                 .gpio                   = AT91_PIN_PB19,
 93                 .active_low             = 0,
 94                 .default_trigger        = "none",
 95                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
 96         },
 97         {
 98                 .name                   = "gpo:charge_dis",
 99                 .gpio                   = AT91_PIN_PC2,
100                 .active_low             = 0,
101                 .default_trigger        = "none",
102                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
103         },
104         {
105                 .name                   = "led:event",
106                 .gpio                   = AT91_PIN_PB17,
107                 .active_low             = 1,
108                 .default_trigger        = "none",
109                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
110         },
111         {
112                 .name                   = "led:lan",
113                 .gpio                   = AT91_PIN_PB18,
114                 .active_low             = 1,
115                 .default_trigger        = "none",
116                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
117         },
118         {
119                 .name                   = "led:error",
120                 .gpio                   = AT91_PIN_PB16,
121                 .active_low             = 1,
122                 .default_trigger        = "none",
123                 .default_state          = LEDS_GPIO_DEFSTATE_ON,
124         }
125 };
126 
127 static struct gpio_led_platform_data gpio_led_info = {
128         .leds           = gpio_leds,
129         .num_leds       = ARRAY_SIZE(gpio_leds),
130 };
131 
132 static struct platform_device leds = {
133         .name   = "leds-gpio",
134         .id     = 0,
135         .dev    = {
136                 .platform_data  = &gpio_led_info,
137         }
138 };
139 
140 static void __init gsia18s_leds_init(void)
141 {
142         platform_device_register(&leds);
143 }
144 
145 /* PCF8574 0x20 GPIO - U1 on the GS_IA18-CB_V3 board */
146 static struct gpio_led pcf_gpio_leds1[] = {
147         { /* bit 0 */
148                 .name                   = "gpo:hdc_power",
149                 .gpio                   = PCF_GPIO_HDC_POWER,
150                 .active_low             = 0,
151                 .default_trigger        = "none",
152                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
153         },
154         { /* bit 1 */
155                 .name                   = "gpo:wifi_setup",
156                 .gpio                   = PCF_GPIO_WIFI_SETUP,
157                 .active_low             = 1,
158                 .default_trigger        = "none",
159                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
160         },
161         { /* bit 2 */
162                 .name                   = "gpo:wifi_enable",
163                 .gpio                   = PCF_GPIO_WIFI_ENABLE,
164                 .active_low             = 1,
165                 .default_trigger        = "none",
166                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
167         },
168         { /* bit 3      */
169                 .name                   = "gpo:wifi_reset",
170                 .gpio                   = PCF_GPIO_WIFI_RESET,
171                 .active_low             = 1,
172                 .default_trigger        = "none",
173                 .default_state          = LEDS_GPIO_DEFSTATE_ON,
174         },
175         /* bit 4 used as GPI    */
176         { /* bit 5 */
177                 .name                   = "gpo:gps_setup",
178                 .gpio                   = PCF_GPIO_GPS_SETUP,
179                 .active_low             = 1,
180                 .default_trigger        = "none",
181                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
182         },
183         { /* bit 6 */
184                 .name                   = "gpo:gps_standby",
185                 .gpio                   = PCF_GPIO_GPS_STANDBY,
186                 .active_low             = 0,
187                 .default_trigger        = "none",
188                 .default_state          = LEDS_GPIO_DEFSTATE_ON,
189         },
190         { /* bit 7 */
191                 .name                   = "gpo:gps_power",
192                 .gpio                   = PCF_GPIO_GPS_POWER,
193                 .active_low             = 0,
194                 .default_trigger        = "none",
195                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
196         }
197 };
198 
199 static struct gpio_led_platform_data pcf_gpio_led_info1 = {
200         .leds           = pcf_gpio_leds1,
201         .num_leds       = ARRAY_SIZE(pcf_gpio_leds1),
202 };
203 
204 static struct platform_device pcf_leds1 = {
205         .name   = "leds-gpio", /* GS_IA18-CB_board */
206         .id     = 1,
207         .dev    = {
208                 .platform_data  = &pcf_gpio_led_info1,
209         }
210 };
211 
212 /* PCF8574 0x22 GPIO - U1 on the GS_2G_OPT1-A_V0 board (Alarm) */
213 static struct gpio_led pcf_gpio_leds2[] = {
214         { /* bit 0 */
215                 .name                   = "gpo:alarm_1",
216                 .gpio                   = PCF_GPIO_ALARM1,
217                 .active_low             = 1,
218                 .default_trigger        = "none",
219                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
220         },
221         { /* bit 1 */
222                 .name                   = "gpo:alarm_2",
223                 .gpio                   = PCF_GPIO_ALARM2,
224                 .active_low             = 1,
225                 .default_trigger        = "none",
226                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
227         },
228         { /* bit 2 */
229                 .name                   = "gpo:alarm_3",
230                 .gpio                   = PCF_GPIO_ALARM3,
231                 .active_low             = 1,
232                 .default_trigger        = "none",
233                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
234         },
235         { /* bit 3 */
236                 .name                   = "gpo:alarm_4",
237                 .gpio                   = PCF_GPIO_ALARM4,
238                 .active_low             = 1,
239                 .default_trigger        = "none",
240                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
241         },
242         /* bits 4, 5, 6 not used */
243         { /* bit 7 */
244                 .name                   = "gpo:alarm_v_relay_on",
245                 .gpio                   = PCF_GPIO_ALARM_V_RELAY_ON,
246                 .active_low             = 0,
247                 .default_trigger        = "none",
248                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
249         },
250 };
251 
252 static struct gpio_led_platform_data pcf_gpio_led_info2 = {
253         .leds           = pcf_gpio_leds2,
254         .num_leds       = ARRAY_SIZE(pcf_gpio_leds2),
255 };
256 
257 static struct platform_device pcf_leds2 = {
258         .name   = "leds-gpio",
259         .id     = 2,
260         .dev    = {
261                 .platform_data  = &pcf_gpio_led_info2,
262         }
263 };
264 
265 /* PCF8574 0x24 GPIO U1 on the GS_2G-OPT23-A_V0 board (Modem) */
266 static struct gpio_led pcf_gpio_leds3[] = {
267         { /* bit 0 */
268                 .name                   = "gpo:modem_power",
269                 .gpio                   = PCF_GPIO_MODEM_POWER,
270                 .active_low             = 1,
271                 .default_trigger        = "none",
272                 .default_state          = LEDS_GPIO_DEFSTATE_OFF,
273         },
274                 /* bits 1 and 2 not used */
275         { /* bit 3 */
276                 .name                   = "gpo:modem_reset",
277                 .gpio                   = PCF_GPIO_MODEM_RESET,
278                 .active_low             = 1,
279                 .default_trigger        = "none",
280                 .default_state          = LEDS_GPIO_DEFSTATE_ON,
281         },
282                 /* bits 4, 5 and 6 not used */
283         { /* bit 7 */
284                 .name                   = "gpo:trx_reset",
285                 .gpio                   = PCF_GPIO_TRX_RESET,
286                 .active_low             = 1,
287                 .default_trigger        = "none",
288                 .default_state          = LEDS_GPIO_DEFSTATE_ON,
289         }
290 };
291 
292 static struct gpio_led_platform_data pcf_gpio_led_info3 = {
293         .leds           = pcf_gpio_leds3,
294         .num_leds       = ARRAY_SIZE(pcf_gpio_leds3),
295 };
296 
297 static struct platform_device pcf_leds3 = {
298         .name   = "leds-gpio",
299         .id     = 3,
300         .dev    = {
301                 .platform_data  = &pcf_gpio_led_info3,
302         }
303 };
304 
305 static void __init gsia18s_pcf_leds_init(void)
306 {
307         platform_device_register(&pcf_leds1);
308         platform_device_register(&pcf_leds2);
309         platform_device_register(&pcf_leds3);
310 }
311 
312 /*
313  * SPI busses.
314  */
315 static struct spi_board_info gsia18s_spi_devices[] = {
316         { /* User accessible spi0, cs0 used for communication with MSP RTC */
317                 .modalias       = "spidev",
318                 .bus_num        = 0,
319                 .chip_select    = 0,
320                 .max_speed_hz   = 580000,
321                 .mode           = SPI_MODE_1,
322         },
323         { /* User accessible spi1, cs0 used for communication with int. DSP */
324                 .modalias       = "spidev",
325                 .bus_num        = 1,
326                 .chip_select    = 0,
327                 .max_speed_hz   = 5600000,
328                 .mode           = SPI_MODE_0,
329         },
330         { /* User accessible spi1, cs1 used for communication with ext. DSP */
331                 .modalias       = "spidev",
332                 .bus_num        = 1,
333                 .chip_select    = 1,
334                 .max_speed_hz   = 5600000,
335                 .mode           = SPI_MODE_0,
336         },
337         { /* User accessible spi1, cs2 used for communication with ext. DSP */
338                 .modalias       = "spidev",
339                 .bus_num        = 1,
340                 .chip_select    = 2,
341                 .max_speed_hz   = 5600000,
342                 .mode           = SPI_MODE_0,
343         },
344         { /* User accessible spi1, cs3 used for communication with ext. DSP */
345                 .modalias       = "spidev",
346                 .bus_num        = 1,
347                 .chip_select    = 3,
348                 .max_speed_hz   = 5600000,
349                 .mode           = SPI_MODE_0,
350         }
351 };
352 
353 /*
354  * GPI Buttons
355  */
356 static struct gpio_keys_button buttons[] = {
357         {
358                 .gpio           = GPIO_TRIG_NET_IN,
359                 .code           = BTN_1,
360                 .desc           = "TRIG_NET_IN",
361                 .type           = EV_KEY,
362                 .active_low     = 0,
363                 .wakeup         = 1,
364         },
365         { /* SW80 on the GS_IA18_S-MN board*/
366                 .gpio           = GPIO_CARD_UNMOUNT_0,
367                 .code           = BTN_2,
368                 .desc           = "Card umount 0",
369                 .type           = EV_KEY,
370                 .active_low     = 1,
371                 .wakeup         = 1,
372         },
373         { /* SW79 on the GS_IA18_S-MN board*/
374                 .gpio           = GPIO_CARD_UNMOUNT_1,
375                 .code           = BTN_3,
376                 .desc           = "Card umount 1",
377                 .type           = EV_KEY,
378                 .active_low     = 1,
379                 .wakeup         = 1,
380         },
381         { /* SW280 on the GS_IA18-CB board*/
382                 .gpio           = GPIO_KEY_POWER,
383                 .code           = KEY_POWER,
384                 .desc           = "Power Off Button",
385                 .type           = EV_KEY,
386                 .active_low     = 0,
387                 .wakeup         = 1,
388         }
389 };
390 
391 static struct gpio_keys_platform_data button_data = {
392         .buttons        = buttons,
393         .nbuttons       = ARRAY_SIZE(buttons),
394 };
395 
396 static struct platform_device button_device = {
397         .name           = "gpio-keys",
398         .id             = -1,
399         .num_resources  = 0,
400         .dev            = {
401                 .platform_data  = &button_data,
402         }
403 };
404 
405 static void __init gsia18s_add_device_buttons(void)
406 {
407         at91_set_gpio_input(GPIO_TRIG_NET_IN, 1);
408         at91_set_deglitch(GPIO_TRIG_NET_IN, 1);
409         at91_set_gpio_input(GPIO_CARD_UNMOUNT_0, 1);
410         at91_set_deglitch(GPIO_CARD_UNMOUNT_0, 1);
411         at91_set_gpio_input(GPIO_CARD_UNMOUNT_1, 1);
412         at91_set_deglitch(GPIO_CARD_UNMOUNT_1, 1);
413         at91_set_gpio_input(GPIO_KEY_POWER, 0);
414         at91_set_deglitch(GPIO_KEY_POWER, 1);
415 
416         platform_device_register(&button_device);
417 }
418 
419 /*
420  * I2C
421  */
422 static int pcf8574x_0x20_setup(struct i2c_client *client, int gpio,
423                                 unsigned int ngpio, void *context)
424 {
425         int status;
426 
427         status = gpio_request(gpio + PCF_GPIO_ETH_DETECT, "eth_det");
428         if (status < 0) {
429                 pr_err("error: can't request GPIO%d\n",
430                         gpio + PCF_GPIO_ETH_DETECT);
431                 return status;
432         }
433         status = gpio_direction_input(gpio + PCF_GPIO_ETH_DETECT);
434         if (status < 0) {
435                 pr_err("error: can't setup GPIO%d as input\n",
436                         gpio + PCF_GPIO_ETH_DETECT);
437                 return status;
438         }
439         status = gpio_export(gpio + PCF_GPIO_ETH_DETECT, false);
440         if (status < 0) {
441                 pr_err("error: can't export GPIO%d\n",
442                         gpio + PCF_GPIO_ETH_DETECT);
443                 return status;
444         }
445         status = gpio_sysfs_set_active_low(gpio + PCF_GPIO_ETH_DETECT, 1);
446         if (status < 0) {
447                 pr_err("error: gpio_sysfs_set active_low(GPIO%d, 1)\n",
448                         gpio + PCF_GPIO_ETH_DETECT);
449                 return status;
450         }
451 
452         return 0;
453 }
454 
455 static int pcf8574x_0x20_teardown(struct i2c_client *client, int gpio,
456                                         unsigned ngpio, void *context)
457 {
458         gpio_free(gpio + PCF_GPIO_ETH_DETECT);
459         return 0;
460 }
461 
462 static struct pcf857x_platform_data pcf20_pdata = {
463         .gpio_base      = GS_IA18_S_PCF_GPIO_BASE0,
464         .n_latch        = (1 << 4),
465         .setup          = pcf8574x_0x20_setup,
466         .teardown       = pcf8574x_0x20_teardown,
467 };
468 
469 static struct pcf857x_platform_data pcf22_pdata = {
470         .gpio_base      = GS_IA18_S_PCF_GPIO_BASE1,
471 };
472 
473 static struct pcf857x_platform_data pcf24_pdata = {
474         .gpio_base      = GS_IA18_S_PCF_GPIO_BASE2,
475 };
476 
477 static struct i2c_board_info __initdata gsia18s_i2c_devices[] = {
478         { /* U1 on the GS_IA18-CB_V3 board */
479                 I2C_BOARD_INFO("pcf8574", 0x20),
480                 .platform_data = &pcf20_pdata,
481         },
482         { /* U1 on the GS_2G_OPT1-A_V0 board (Alarm) */
483                 I2C_BOARD_INFO("pcf8574", 0x22),
484                 .platform_data = &pcf22_pdata,
485         },
486         { /* U1 on the GS_2G-OPT23-A_V0 board (Modem) */
487                 I2C_BOARD_INFO("pcf8574", 0x24),
488                 .platform_data = &pcf24_pdata,
489         },
490         { /* U161 on the GS_IA18_S-MN board */
491                 I2C_BOARD_INFO("24c1024", 0x50),
492         },
493         { /* U162 on the GS_IA18_S-MN board */
494                 I2C_BOARD_INFO("24c01", 0x53),
495         },
496 };
497 
498 /*
499  * Compact Flash
500  */
501 static struct at91_cf_data __initdata gsia18s_cf1_data = {
502         .irq_pin        = AT91_PIN_PA27,
503         .det_pin        = AT91_PIN_PB30,
504         .vcc_pin        = -EINVAL,
505         .rst_pin        = AT91_PIN_PB31,
506         .chipselect     = 5,
507         .flags          = AT91_CF_TRUE_IDE,
508 };
509 
510 /* Power Off by RTC */
511 static void gsia18s_power_off(void)
512 {
513         pr_notice("Power supply will be switched off automatically now or after 60 seconds without ArmDAS.\n");
514         at91_set_gpio_output(AT91_PIN_PA25, 1);
515         /* Spin to death... */
516         while (1)
517                 ;
518 }
519 
520 static int __init gsia18s_power_off_init(void)
521 {
522         pm_power_off = gsia18s_power_off;
523         return 0;
524 }
525 
526 /* ---------------------------------------------------------------------------*/
527 
528 static void __init gsia18s_board_init(void)
529 {
530         /*
531          * USART0 on ttyS1 (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI).
532          * Used for Internal Analog Modem.
533          */
534         at91_register_uart(AT91SAM9260_ID_US0, 1,
535                                 ATMEL_UART_CTS | ATMEL_UART_RTS |
536                                 ATMEL_UART_DTR | ATMEL_UART_DSR |
537                                 ATMEL_UART_DCD | ATMEL_UART_RI);
538         /*
539          * USART1 on ttyS2 (Rx, Tx, CTS, RTS).
540          * Used for GPS or WiFi or Data stream.
541          */
542         at91_register_uart(AT91SAM9260_ID_US1, 2,
543                                 ATMEL_UART_CTS | ATMEL_UART_RTS);
544         /*
545          * USART2 on ttyS3 (Rx, Tx, CTS, RTS).
546          * Used for External Modem.
547          */
548         at91_register_uart(AT91SAM9260_ID_US2, 3,
549                                 ATMEL_UART_CTS | ATMEL_UART_RTS);
550         /*
551          * USART3 on ttyS4 (Rx, Tx, RTS).
552          * Used for RS-485.
553          */
554         at91_register_uart(AT91SAM9260_ID_US3, 4, ATMEL_UART_RTS);
555 
556         /*
557          * USART4 on ttyS5 (Rx, Tx).
558          * Used for TRX433 Radio Module.
559          */
560         at91_register_uart(AT91SAM9260_ID_US4, 5, 0);
561         stamp9g20_board_init();
562         at91_add_device_usbh(&usbh_data);
563         at91_add_device_udc(&udc_data);
564         at91_add_device_eth(&macb_data);
565         gsia18s_leds_init();
566         gsia18s_pcf_leds_init();
567         gsia18s_add_device_buttons();
568         at91_add_device_i2c(gsia18s_i2c_devices,
569                                 ARRAY_SIZE(gsia18s_i2c_devices));
570         at91_add_device_cf(&gsia18s_cf1_data);
571         at91_add_device_spi(gsia18s_spi_devices,
572                                 ARRAY_SIZE(gsia18s_spi_devices));
573         gsia18s_power_off_init();
574 }
575 
576 MACHINE_START(GSIA18S, "GS_IA18_S")
577         .init_time      = at91sam926x_pit_init,
578         .map_io         = at91_map_io,
579         .handle_irq     = at91_aic_handle_irq,
580         .init_early     = gsia18s_init_early,
581         .init_irq       = at91_init_irq_default,
582         .init_machine   = gsia18s_board_init,
583 MACHINE_END
584 

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