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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/board.h>
34#include <mach/at91sam9_smc.h>
35#include <mach/gsia18s.h>
36#include <mach/stamp9g20.h>
37
38#include "sam9_smc.h"
39#include "generic.h"
40
41static void __init gsia18s_init_early(void)
42{
43 stamp9g20_init_early();
44
45 /*
46 * USART0 on ttyS1 (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI).
47 * Used for Internal Analog Modem.
48 */
49 at91_register_uart(AT91SAM9260_ID_US0, 1,
50 ATMEL_UART_CTS | ATMEL_UART_RTS |
51 ATMEL_UART_DTR | ATMEL_UART_DSR |
52 ATMEL_UART_DCD | ATMEL_UART_RI);
53 /*
54 * USART1 on ttyS2 (Rx, Tx, CTS, RTS).
55 * Used for GPS or WiFi or Data stream.
56 */
57 at91_register_uart(AT91SAM9260_ID_US1, 2,
58 ATMEL_UART_CTS | ATMEL_UART_RTS);
59 /*
60 * USART2 on ttyS3 (Rx, Tx, CTS, RTS).
61 * Used for External Modem.
62 */
63 at91_register_uart(AT91SAM9260_ID_US2, 3,
64 ATMEL_UART_CTS | ATMEL_UART_RTS);
65 /*
66 * USART3 on ttyS4 (Rx, Tx, RTS).
67 * Used for RS-485.
68 */
69 at91_register_uart(AT91SAM9260_ID_US3, 4, ATMEL_UART_RTS);
70
71 /*
72 * USART4 on ttyS5 (Rx, Tx).
73 * Used for TRX433 Radio Module.
74 */
75 at91_register_uart(AT91SAM9260_ID_US4, 5, 0);
76}
77
78/*
79 * Two USB Host ports
80 */
81static struct at91_usbh_data __initdata usbh_data = {
82 .ports = 2,
83};
84
85/*
86 * USB Device port
87 */
88static struct at91_udc_data __initdata udc_data = {
89 .vbus_pin = AT91_PIN_PA22,
90 .pullup_pin = 0, /* pull-up driven by UDC */
91};
92
93/*
94 * MACB Ethernet device
95 */
96static struct at91_eth_data __initdata macb_data = {
97 .phy_irq_pin = AT91_PIN_PA28,
98 .is_rmii = 1,
99};
100
101/*
102 * LEDs and GPOs
103 */
104static struct gpio_led gpio_leds[] = {
105 {
106 .name = "gpo:spi1reset",
107 .gpio = AT91_PIN_PC1,
108 .active_low = 0,
109 .default_trigger = "none",
110 .default_state = LEDS_GPIO_DEFSTATE_OFF,
111 },
112 {
113 .name = "gpo:trig_net_out",
114 .gpio = AT91_PIN_PB20,
115 .active_low = 0,
116 .default_trigger = "none",
117 .default_state = LEDS_GPIO_DEFSTATE_OFF,
118 },
119 {
120 .name = "gpo:trig_net_dir",
121 .gpio = AT91_PIN_PB19,
122 .active_low = 0,
123 .default_trigger = "none",
124 .default_state = LEDS_GPIO_DEFSTATE_OFF,
125 },
126 {
127 .name = "gpo:charge_dis",
128 .gpio = AT91_PIN_PC2,
129 .active_low = 0,
130 .default_trigger = "none",
131 .default_state = LEDS_GPIO_DEFSTATE_OFF,
132 },
133 {
134 .name = "led:event",
135 .gpio = AT91_PIN_PB17,
136 .active_low = 1,
137 .default_trigger = "none",
138 .default_state = LEDS_GPIO_DEFSTATE_OFF,
139 },
140 {
141 .name = "led:lan",
142 .gpio = AT91_PIN_PB18,
143 .active_low = 1,
144 .default_trigger = "none",
145 .default_state = LEDS_GPIO_DEFSTATE_OFF,
146 },
147 {
148 .name = "led:error",
149 .gpio = AT91_PIN_PB16,
150 .active_low = 1,
151 .default_trigger = "none",
152 .default_state = LEDS_GPIO_DEFSTATE_ON,
153 }
154};
155
156static struct gpio_led_platform_data gpio_led_info = {
157 .leds = gpio_leds,
158 .num_leds = ARRAY_SIZE(gpio_leds),
159};
160
161static struct platform_device leds = {
162 .name = "leds-gpio",
163 .id = 0,
164 .dev = {
165 .platform_data = &gpio_led_info,
166 }
167};
168
169static void __init gsia18s_leds_init(void)
170{
171 platform_device_register(&leds);
172}
173
174/* PCF8574 0x20 GPIO - U1 on the GS_IA18-CB_V3 board */
175static struct gpio_led pcf_gpio_leds1[] = {
176 { /* bit 0 */
177 .name = "gpo:hdc_power",
178 .gpio = PCF_GPIO_HDC_POWER,
179 .active_low = 0,
180 .default_trigger = "none",
181 .default_state = LEDS_GPIO_DEFSTATE_OFF,
182 },
183 { /* bit 1 */
184 .name = "gpo:wifi_setup",
185 .gpio = PCF_GPIO_WIFI_SETUP,
186 .active_low = 1,
187 .default_trigger = "none",
188 .default_state = LEDS_GPIO_DEFSTATE_OFF,
189 },
190 { /* bit 2 */
191 .name = "gpo:wifi_enable",
192 .gpio = PCF_GPIO_WIFI_ENABLE,
193 .active_low = 1,
194 .default_trigger = "none",
195 .default_state = LEDS_GPIO_DEFSTATE_OFF,
196 },
197 { /* bit 3 */
198 .name = "gpo:wifi_reset",
199 .gpio = PCF_GPIO_WIFI_RESET,
200 .active_low = 1,
201 .default_trigger = "none",
202 .default_state = LEDS_GPIO_DEFSTATE_ON,
203 },
204 /* bit 4 used as GPI */
205 { /* bit 5 */
206 .name = "gpo:gps_setup",
207 .gpio = PCF_GPIO_GPS_SETUP,
208 .active_low = 1,
209 .default_trigger = "none",
210 .default_state = LEDS_GPIO_DEFSTATE_OFF,
211 },
212 { /* bit 6 */
213 .name = "gpo:gps_standby",
214 .gpio = PCF_GPIO_GPS_STANDBY,
215 .active_low = 0,
216 .default_trigger = "none",
217 .default_state = LEDS_GPIO_DEFSTATE_ON,
218 },
219 { /* bit 7 */
220 .name = "gpo:gps_power",
221 .gpio = PCF_GPIO_GPS_POWER,
222 .active_low = 0,
223 .default_trigger = "none",
224 .default_state = LEDS_GPIO_DEFSTATE_OFF,
225 }
226};
227
228static struct gpio_led_platform_data pcf_gpio_led_info1 = {
229 .leds = pcf_gpio_leds1,
230 .num_leds = ARRAY_SIZE(pcf_gpio_leds1),
231};
232
233static struct platform_device pcf_leds1 = {
234 .name = "leds-gpio", /* GS_IA18-CB_board */
235 .id = 1,
236 .dev = {
237 .platform_data = &pcf_gpio_led_info1,
238 }
239};
240
241/* PCF8574 0x22 GPIO - U1 on the GS_2G_OPT1-A_V0 board (Alarm) */
242static struct gpio_led pcf_gpio_leds2[] = {
243 { /* bit 0 */
244 .name = "gpo:alarm_1",
245 .gpio = PCF_GPIO_ALARM1,
246 .active_low = 1,
247 .default_trigger = "none",
248 .default_state = LEDS_GPIO_DEFSTATE_OFF,
249 },
250 { /* bit 1 */
251 .name = "gpo:alarm_2",
252 .gpio = PCF_GPIO_ALARM2,
253 .active_low = 1,
254 .default_trigger = "none",
255 .default_state = LEDS_GPIO_DEFSTATE_OFF,
256 },
257 { /* bit 2 */
258 .name = "gpo:alarm_3",
259 .gpio = PCF_GPIO_ALARM3,
260 .active_low = 1,
261 .default_trigger = "none",
262 .default_state = LEDS_GPIO_DEFSTATE_OFF,
263 },
264 { /* bit 3 */
265 .name = "gpo:alarm_4",
266 .gpio = PCF_GPIO_ALARM4,
267 .active_low = 1,
268 .default_trigger = "none",
269 .default_state = LEDS_GPIO_DEFSTATE_OFF,
270 },
271 /* bits 4, 5, 6 not used */
272 { /* bit 7 */
273 .name = "gpo:alarm_v_relay_on",
274 .gpio = PCF_GPIO_ALARM_V_RELAY_ON,
275 .active_low = 0,
276 .default_trigger = "none",
277 .default_state = LEDS_GPIO_DEFSTATE_OFF,
278 },
279};
280
281static struct gpio_led_platform_data pcf_gpio_led_info2 = {
282 .leds = pcf_gpio_leds2,
283 .num_leds = ARRAY_SIZE(pcf_gpio_leds2),
284};
285
286static struct platform_device pcf_leds2 = {
287 .name = "leds-gpio",
288 .id = 2,
289 .dev = {
290 .platform_data = &pcf_gpio_led_info2,
291 }
292};
293
294/* PCF8574 0x24 GPIO U1 on the GS_2G-OPT23-A_V0 board (Modem) */
295static struct gpio_led pcf_gpio_leds3[] = {
296 { /* bit 0 */
297 .name = "gpo:modem_power",
298 .gpio = PCF_GPIO_MODEM_POWER,
299 .active_low = 1,
300 .default_trigger = "none",
301 .default_state = LEDS_GPIO_DEFSTATE_OFF,
302 },
303 /* bits 1 and 2 not used */
304 { /* bit 3 */
305 .name = "gpo:modem_reset",
306 .gpio = PCF_GPIO_MODEM_RESET,
307 .active_low = 1,
308 .default_trigger = "none",
309 .default_state = LEDS_GPIO_DEFSTATE_ON,
310 },
311 /* bits 4, 5 and 6 not used */
312 { /* bit 7 */
313 .name = "gpo:trx_reset",
314 .gpio = PCF_GPIO_TRX_RESET,
315 .active_low = 1,
316 .default_trigger = "none",
317 .default_state = LEDS_GPIO_DEFSTATE_ON,
318 }
319};
320
321static struct gpio_led_platform_data pcf_gpio_led_info3 = {
322 .leds = pcf_gpio_leds3,
323 .num_leds = ARRAY_SIZE(pcf_gpio_leds3),
324};
325
326static struct platform_device pcf_leds3 = {
327 .name = "leds-gpio",
328 .id = 3,
329 .dev = {
330 .platform_data = &pcf_gpio_led_info3,
331 }
332};
333
334static void __init gsia18s_pcf_leds_init(void)
335{
336 platform_device_register(&pcf_leds1);
337 platform_device_register(&pcf_leds2);
338 platform_device_register(&pcf_leds3);
339}
340
341/*
342 * SPI busses.
343 */
344static struct spi_board_info gsia18s_spi_devices[] = {
345 { /* User accessible spi0, cs0 used for communication with MSP RTC */
346 .modalias = "spidev",
347 .bus_num = 0,
348 .chip_select = 0,
349 .max_speed_hz = 580000,
350 .mode = SPI_MODE_1,
351 },
352 { /* User accessible spi1, cs0 used for communication with int. DSP */
353 .modalias = "spidev",
354 .bus_num = 1,
355 .chip_select = 0,
356 .max_speed_hz = 5600000,
357 .mode = SPI_MODE_0,
358 },
359 { /* User accessible spi1, cs1 used for communication with ext. DSP */
360 .modalias = "spidev",
361 .bus_num = 1,
362 .chip_select = 1,
363 .max_speed_hz = 5600000,
364 .mode = SPI_MODE_0,
365 },
366 { /* User accessible spi1, cs2 used for communication with ext. DSP */
367 .modalias = "spidev",
368 .bus_num = 1,
369 .chip_select = 2,
370 .max_speed_hz = 5600000,
371 .mode = SPI_MODE_0,
372 },
373 { /* User accessible spi1, cs3 used for communication with ext. DSP */
374 .modalias = "spidev",
375 .bus_num = 1,
376 .chip_select = 3,
377 .max_speed_hz = 5600000,
378 .mode = SPI_MODE_0,
379 }
380};
381
382/*
383 * GPI Buttons
384 */
385static struct gpio_keys_button buttons[] = {
386 {
387 .gpio = GPIO_TRIG_NET_IN,
388 .code = BTN_1,
389 .desc = "TRIG_NET_IN",
390 .type = EV_KEY,
391 .active_low = 0,
392 .wakeup = 1,
393 },
394 { /* SW80 on the GS_IA18_S-MN board*/
395 .gpio = GPIO_CARD_UNMOUNT_0,
396 .code = BTN_2,
397 .desc = "Card umount 0",
398 .type = EV_KEY,
399 .active_low = 1,
400 .wakeup = 1,
401 },
402 { /* SW79 on the GS_IA18_S-MN board*/
403 .gpio = GPIO_CARD_UNMOUNT_1,
404 .code = BTN_3,
405 .desc = "Card umount 1",
406 .type = EV_KEY,
407 .active_low = 1,
408 .wakeup = 1,
409 },
410 { /* SW280 on the GS_IA18-CB board*/
411 .gpio = GPIO_KEY_POWER,
412 .code = KEY_POWER,
413 .desc = "Power Off Button",
414 .type = EV_KEY,
415 .active_low = 0,
416 .wakeup = 1,
417 }
418};
419
420static struct gpio_keys_platform_data button_data = {
421 .buttons = buttons,
422 .nbuttons = ARRAY_SIZE(buttons),
423};
424
425static struct platform_device button_device = {
426 .name = "gpio-keys",
427 .id = -1,
428 .num_resources = 0,
429 .dev = {
430 .platform_data = &button_data,
431 }
432};
433
434static void __init gsia18s_add_device_buttons(void)
435{
436 at91_set_gpio_input(GPIO_TRIG_NET_IN, 1);
437 at91_set_deglitch(GPIO_TRIG_NET_IN, 1);
438 at91_set_gpio_input(GPIO_CARD_UNMOUNT_0, 1);
439 at91_set_deglitch(GPIO_CARD_UNMOUNT_0, 1);
440 at91_set_gpio_input(GPIO_CARD_UNMOUNT_1, 1);
441 at91_set_deglitch(GPIO_CARD_UNMOUNT_1, 1);
442 at91_set_gpio_input(GPIO_KEY_POWER, 0);
443 at91_set_deglitch(GPIO_KEY_POWER, 1);
444
445 platform_device_register(&button_device);
446}
447
448/*
449 * I2C
450 */
451static int pcf8574x_0x20_setup(struct i2c_client *client, int gpio,
452 unsigned int ngpio, void *context)
453{
454 int status;
455
456 status = gpio_request(gpio + PCF_GPIO_ETH_DETECT, "eth_det");
457 if (status < 0) {
458 pr_err("error: can't request GPIO%d\n",
459 gpio + PCF_GPIO_ETH_DETECT);
460 return status;
461 }
462 status = gpio_direction_input(gpio + PCF_GPIO_ETH_DETECT);
463 if (status < 0) {
464 pr_err("error: can't setup GPIO%d as input\n",
465 gpio + PCF_GPIO_ETH_DETECT);
466 return status;
467 }
468 status = gpio_export(gpio + PCF_GPIO_ETH_DETECT, false);
469 if (status < 0) {
470 pr_err("error: can't export GPIO%d\n",
471 gpio + PCF_GPIO_ETH_DETECT);
472 return status;
473 }
474 status = gpio_sysfs_set_active_low(gpio + PCF_GPIO_ETH_DETECT, 1);
475 if (status < 0) {
476 pr_err("error: gpio_sysfs_set active_low(GPIO%d, 1)\n",
477 gpio + PCF_GPIO_ETH_DETECT);
478 return status;
479 }
480
481 return 0;
482}
483
484static int pcf8574x_0x20_teardown(struct i2c_client *client, int gpio,
485 unsigned ngpio, void *context)
486{
487 gpio_free(gpio + PCF_GPIO_ETH_DETECT);
488 return 0;
489}
490
491static struct pcf857x_platform_data pcf20_pdata = {
492 .gpio_base = GS_IA18_S_PCF_GPIO_BASE0,
493 .n_latch = (1 << 4),
494 .setup = pcf8574x_0x20_setup,
495 .teardown = pcf8574x_0x20_teardown,
496};
497
498static struct pcf857x_platform_data pcf22_pdata = {
499 .gpio_base = GS_IA18_S_PCF_GPIO_BASE1,
500};
501
502static struct pcf857x_platform_data pcf24_pdata = {
503 .gpio_base = GS_IA18_S_PCF_GPIO_BASE2,
504};
505
506static struct i2c_board_info __initdata gsia18s_i2c_devices[] = {
507 { /* U1 on the GS_IA18-CB_V3 board */
508 I2C_BOARD_INFO("pcf8574", 0x20),
509 .platform_data = &pcf20_pdata,
510 },
511 { /* U1 on the GS_2G_OPT1-A_V0 board (Alarm) */
512 I2C_BOARD_INFO("pcf8574", 0x22),
513 .platform_data = &pcf22_pdata,
514 },
515 { /* U1 on the GS_2G-OPT23-A_V0 board (Modem) */
516 I2C_BOARD_INFO("pcf8574", 0x24),
517 .platform_data = &pcf24_pdata,
518 },
519 { /* U161 on the GS_IA18_S-MN board */
520 I2C_BOARD_INFO("24c1024", 0x50),
521 },
522 { /* U162 on the GS_IA18_S-MN board */
523 I2C_BOARD_INFO("24c01", 0x53),
524 },
525};
526
527/*
528 * Compact Flash
529 */
530static struct at91_cf_data __initdata gsia18s_cf1_data = {
531 .irq_pin = AT91_PIN_PA27,
532 .det_pin = AT91_PIN_PB30,
533 .rst_pin = AT91_PIN_PB31,
534 .chipselect = 5,
535 .flags = AT91_CF_TRUE_IDE,
536};
537
538/* Power Off by RTC */
539static void gsia18s_power_off(void)
540{
541 pr_notice("Power supply will be switched off automatically now or after 60 seconds without ArmDAS.\n");
542 at91_set_gpio_output(AT91_PIN_PA25, 1);
543 /* Spin to death... */
544 while (1)
545 ;
546}
547
548static int __init gsia18s_power_off_init(void)
549{
550 pm_power_off = gsia18s_power_off;
551 return 0;
552}
553
554/* ---------------------------------------------------------------------------*/
555
556static void __init gsia18s_board_init(void)
557{
558 stamp9g20_board_init();
559 at91_add_device_usbh(&usbh_data);
560 at91_add_device_udc(&udc_data);
561 at91_add_device_eth(&macb_data);
562 gsia18s_leds_init();
563 gsia18s_pcf_leds_init();
564 gsia18s_add_device_buttons();
565 at91_add_device_i2c(gsia18s_i2c_devices,
566 ARRAY_SIZE(gsia18s_i2c_devices));
567 at91_add_device_cf(&gsia18s_cf1_data);
568 at91_add_device_spi(gsia18s_spi_devices,
569 ARRAY_SIZE(gsia18s_spi_devices));
570 gsia18s_power_off_init();
571}
572
573MACHINE_START(GSIA18S, "GS_IA18_S")
574 .timer = &at91sam926x_timer,
575 .map_io = at91_map_io,
576 .init_early = gsia18s_init_early,
577 .init_irq = at91_init_irq_default,
578 .init_machine = gsia18s_board_init,
579MACHINE_END