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-rw-r--r--arch/arm/mach-pxa/imote2.c590
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diff --git a/arch/arm/mach-pxa/imote2.c b/arch/arm/mach-pxa/imote2.c
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1/*
2 * linux/arch/arm/mach-pxa/imote2.c
3 *
4 * Author: Ed C. Epp
5 * Created: Nov 05, 2002
6 * Copyright: Intel Corp.
7 *
8 * Modified 2008: Jonathan Cameron
9 *
10 * The Imote2 is a wireless sensor node platform sold
11 * by Crossbow (www.xbow.com).
12 */
13
14#include <linux/init.h>
15#include <linux/device.h>
16#include <linux/mtd/mtd.h>
17#include <linux/mtd/partitions.h>
18#include <linux/platform_device.h>
19#include <linux/regulator/machine.h>
20#include <linux/gpio.h>
21#include <linux/leds.h>
22#include <linux/spi/spi.h>
23#include <linux/i2c.h>
24#include <linux/mfd/da903x.h>
25#include <linux/sht15.h>
26
27#include <asm/mach-types.h>
28#include <asm/mach/arch.h>
29#include <asm/mach/map.h>
30#include <asm/mach/flash.h>
31
32#include <mach/pxa27x.h>
33#include <plat/i2c.h>
34#include <mach/udc.h>
35#include <mach/mmc.h>
36#include <mach/pxa2xx_spi.h>
37#include <mach/pxa27x-udc.h>
38
39#include "devices.h"
40#include "generic.h"
41
42static unsigned long imote2_pin_config[] __initdata = {
43
44 /* Device Identification for wakeup*/
45 GPIO102_GPIO,
46
47 /* Button */
48 GPIO91_GPIO,
49
50 /* DA9030 */
51 GPIO1_GPIO,
52
53 /* MMC */
54 GPIO32_MMC_CLK,
55 GPIO112_MMC_CMD,
56 GPIO92_MMC_DAT_0,
57 GPIO109_MMC_DAT_1,
58 GPIO110_MMC_DAT_2,
59 GPIO111_MMC_DAT_3,
60
61 /* 802.15.4 radio - driver out of mainline */
62 GPIO22_GPIO, /* CC_RSTN */
63 GPIO114_GPIO, /* CC_FIFO */
64 GPIO116_GPIO, /* CC_CCA */
65 GPIO0_GPIO, /* CC_FIFOP */
66 GPIO16_GPIO, /* CCSFD */
67 GPIO115_GPIO, /* Power enable */
68
69 /* I2C */
70 GPIO117_I2C_SCL,
71 GPIO118_I2C_SDA,
72
73 /* SSP 3 - 802.15.4 radio */
74 GPIO39_GPIO, /* Chip Select */
75 GPIO34_SSP3_SCLK,
76 GPIO35_SSP3_TXD,
77 GPIO41_SSP3_RXD,
78
79 /* SSP 2 - to daughter boards */
80 GPIO37_GPIO, /* Chip Select */
81 GPIO36_SSP2_SCLK,
82 GPIO38_SSP2_TXD,
83 GPIO11_SSP2_RXD,
84
85 /* SSP 1 - to daughter boards */
86 GPIO24_GPIO, /* Chip Select */
87 GPIO23_SSP1_SCLK,
88 GPIO25_SSP1_TXD,
89 GPIO26_SSP1_RXD,
90
91 /* BTUART Basic Connector*/
92 GPIO42_BTUART_RXD,
93 GPIO43_BTUART_TXD,
94 GPIO44_BTUART_CTS,
95 GPIO45_BTUART_RTS,
96
97 /* STUART Serial console via debug board*/
98 GPIO46_STUART_RXD,
99 GPIO47_STUART_TXD,
100
101 /* Basic sensor board */
102 GPIO96_GPIO, /* accelerometer interrupt */
103 GPIO99_GPIO, /* ADC interrupt */
104
105 /* SHT15 */
106 GPIO100_GPIO,
107 GPIO98_GPIO,
108
109 /* Connector pins specified as gpios */
110 GPIO94_GPIO, /* large basic connector pin 14 */
111 GPIO10_GPIO, /* large basic connector pin 23 */
112
113 /* LEDS */
114 GPIO103_GPIO, /* red led */
115 GPIO104_GPIO, /* green led */
116 GPIO105_GPIO, /* blue led */
117};
118
119static struct sht15_platform_data platform_data_sht15 = {
120 .gpio_data = 100,
121 .gpio_sck = 98,
122};
123
124static struct platform_device sht15 = {
125 .name = "sht15",
126 .id = -1,
127 .dev = {
128 .platform_data = &platform_data_sht15,
129 },
130};
131
132static struct regulator_consumer_supply imote2_sensor_3_con[] = {
133 {
134 .dev = &sht15.dev,
135 .supply = "vcc",
136 },
137};
138
139static struct gpio_led imote2_led_pins[] = {
140 {
141 .name = "imote2:red",
142 .gpio = 103,
143 .active_low = 1,
144 }, {
145 .name = "imote2:green",
146 .gpio = 104,
147 .active_low = 1,
148 }, {
149 .name = "imote2:blue",
150 .gpio = 105,
151 .active_low = 1,
152 },
153};
154
155static struct gpio_led_platform_data imote2_led_data = {
156 .num_leds = ARRAY_SIZE(imote2_led_pins),
157 .leds = imote2_led_pins,
158};
159
160static struct platform_device imote2_leds = {
161 .name = "leds-gpio",
162 .id = -1,
163 .dev = {
164 .platform_data = &imote2_led_data,
165 },
166};
167
168/* Reverse engineered partly from Platformx drivers */
169enum imote2_ldos{
170 vcc_vref,
171 vcc_cc2420,
172 vcc_mica,
173 vcc_bt,
174 /* The two voltages available to sensor boards */
175 vcc_sensor_1_8,
176 vcc_sensor_3,
177
178 vcc_sram_ext, /* directly connected to the pxa271 */
179 vcc_pxa_pll,
180 vcc_pxa_usim, /* Reference voltage for certain gpios */
181 vcc_pxa_mem,
182 vcc_pxa_flash,
183 vcc_pxa_core, /*Dc-Dc buck not yet supported */
184 vcc_lcd,
185 vcc_bb,
186 vcc_bbio,
187 vcc_io, /* cc2420 802.15.4 radio and pxa vcc_io ?*/
188};
189
190/* The values of the various regulator constraints are obviously dependent
191 * on exactly what is wired to each ldo. Unfortunately this information is
192 * not generally available. More information has been requested from Xbow
193 * but as of yet they haven't been forthcoming.
194 *
195 * Some of these are clearly Stargate 2 related (no way of plugging
196 * in an lcd on the IM2 for example!).
197 */
198static struct regulator_init_data imote2_ldo_init_data[] = {
199 [vcc_bbio] = {
200 .constraints = { /* board default 1.8V */
201 .name = "vcc_bbio",
202 .min_uV = 1800000,
203 .max_uV = 1800000,
204 },
205 },
206 [vcc_bb] = {
207 .constraints = { /* board default 2.8V */
208 .name = "vcc_bb",
209 .min_uV = 2700000,
210 .max_uV = 3000000,
211 },
212 },
213 [vcc_pxa_flash] = {
214 .constraints = {/* default is 1.8V */
215 .name = "vcc_pxa_flash",
216 .min_uV = 1800000,
217 .max_uV = 1800000,
218 },
219 },
220 [vcc_cc2420] = { /* also vcc_io */
221 .constraints = {
222 /* board default is 2.8V */
223 .name = "vcc_cc2420",
224 .min_uV = 2700000,
225 .max_uV = 3300000,
226 },
227 },
228 [vcc_vref] = { /* Reference for what? */
229 .constraints = { /* default 1.8V */
230 .name = "vcc_vref",
231 .min_uV = 1800000,
232 .max_uV = 1800000,
233 },
234 },
235 [vcc_sram_ext] = {
236 .constraints = { /* default 2.8V */
237 .name = "vcc_sram_ext",
238 .min_uV = 2800000,
239 .max_uV = 2800000,
240 },
241 },
242 [vcc_mica] = {
243 .constraints = { /* default 2.8V */
244 .name = "vcc_mica",
245 .min_uV = 2800000,
246 .max_uV = 2800000,
247 },
248 },
249 [vcc_bt] = {
250 .constraints = { /* default 2.8V */
251 .name = "vcc_bt",
252 .min_uV = 2800000,
253 .max_uV = 2800000,
254 },
255 },
256 [vcc_lcd] = {
257 .constraints = { /* default 2.8V */
258 .name = "vcc_lcd",
259 .min_uV = 2700000,
260 .max_uV = 3300000,
261 },
262 },
263 [vcc_io] = { /* Same or higher than everything
264 * bar vccbat and vccusb */
265 .constraints = { /* default 2.8V */
266 .name = "vcc_io",
267 .min_uV = 2692000,
268 .max_uV = 3300000,
269 },
270 },
271 [vcc_sensor_1_8] = {
272 .constraints = { /* default 1.8V */
273 .name = "vcc_sensor_1_8",
274 .min_uV = 1800000,
275 .max_uV = 1800000,
276 },
277 },
278 [vcc_sensor_3] = { /* curiously default 2.8V */
279 .constraints = {
280 .name = "vcc_sensor_3",
281 .min_uV = 2800000,
282 .max_uV = 3000000,
283 },
284 .num_consumer_supplies = ARRAY_SIZE(imote2_sensor_3_con),
285 .consumer_supplies = imote2_sensor_3_con,
286 },
287 [vcc_pxa_pll] = { /* 1.17V - 1.43V, default 1.3V*/
288 .constraints = {
289 .name = "vcc_pxa_pll",
290 .min_uV = 1170000,
291 .max_uV = 1430000,
292 },
293 },
294 [vcc_pxa_usim] = {
295 .constraints = { /* default 1.8V */
296 .name = "vcc_pxa_usim",
297 .min_uV = 1710000,
298 .max_uV = 2160000,
299 },
300 },
301 [vcc_pxa_mem] = {
302 .constraints = { /* default 1.8V */
303 .name = "vcc_pxa_mem",
304 .min_uV = 1800000,
305 .max_uV = 1800000,
306 },
307 },
308};
309
310static struct da903x_subdev_info imote2_da9030_subdevs[] = {
311 {
312 .name = "da903x-regulator",
313 .id = DA9030_ID_LDO2,
314 .platform_data = &imote2_ldo_init_data[vcc_bbio],
315 }, {
316 .name = "da903x-regulator",
317 .id = DA9030_ID_LDO3,
318 .platform_data = &imote2_ldo_init_data[vcc_bb],
319 }, {
320 .name = "da903x-regulator",
321 .id = DA9030_ID_LDO4,
322 .platform_data = &imote2_ldo_init_data[vcc_pxa_flash],
323 }, {
324 .name = "da903x-regulator",
325 .id = DA9030_ID_LDO5,
326 .platform_data = &imote2_ldo_init_data[vcc_cc2420],
327 }, {
328 .name = "da903x-regulator",
329 .id = DA9030_ID_LDO6,
330 .platform_data = &imote2_ldo_init_data[vcc_vref],
331 }, {
332 .name = "da903x-regulator",
333 .id = DA9030_ID_LDO7,
334 .platform_data = &imote2_ldo_init_data[vcc_sram_ext],
335 }, {
336 .name = "da903x-regulator",
337 .id = DA9030_ID_LDO8,
338 .platform_data = &imote2_ldo_init_data[vcc_mica],
339 }, {
340 .name = "da903x-regulator",
341 .id = DA9030_ID_LDO9,
342 .platform_data = &imote2_ldo_init_data[vcc_bt],
343 }, {
344 .name = "da903x-regulator",
345 .id = DA9030_ID_LDO10,
346 .platform_data = &imote2_ldo_init_data[vcc_sensor_1_8],
347 }, {
348 .name = "da903x-regulator",
349 .id = DA9030_ID_LDO11,
350 .platform_data = &imote2_ldo_init_data[vcc_sensor_3],
351 }, {
352 .name = "da903x-regulator",
353 .id = DA9030_ID_LDO12,
354 .platform_data = &imote2_ldo_init_data[vcc_lcd],
355 }, {
356 .name = "da903x-regulator",
357 .id = DA9030_ID_LDO15,
358 .platform_data = &imote2_ldo_init_data[vcc_pxa_pll],
359 }, {
360 .name = "da903x-regulator",
361 .id = DA9030_ID_LDO17,
362 .platform_data = &imote2_ldo_init_data[vcc_pxa_usim],
363 }, {
364 .name = "da903x-regulator",
365 .id = DA9030_ID_LDO18,
366 .platform_data = &imote2_ldo_init_data[vcc_io],
367 }, {
368 .name = "da903x-regulator",
369 .id = DA9030_ID_LDO19,
370 .platform_data = &imote2_ldo_init_data[vcc_pxa_mem],
371 },
372};
373
374static struct da903x_platform_data imote2_da9030_pdata = {
375 .num_subdevs = ARRAY_SIZE(imote2_da9030_subdevs),
376 .subdevs = imote2_da9030_subdevs,
377};
378
379/* As the the imote2 doesn't currently have a conventional SD slot
380 * there is no option to hotplug cards, making all this rather simple
381 */
382static int imote2_mci_get_ro(struct device *dev)
383{
384 return 0;
385}
386
387/* Rather simple case as hotplugging not possible */
388static struct pxamci_platform_data imote2_mci_platform_data = {
389 .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, /* default anyway */
390 .get_ro = imote2_mci_get_ro,
391 .gpio_card_detect = -1,
392 .gpio_card_ro = -1,
393 .gpio_power = -1,
394};
395
396static struct mtd_partition imote2flash_partitions[] = {
397 {
398 .name = "Bootloader",
399 .size = 0x00040000,
400 .offset = 0,
401 .mask_flags = MTD_WRITEABLE,
402 }, {
403 .name = "Kernel",
404 .size = 0x00200000,
405 .offset = 0x00040000,
406 .mask_flags = 0,
407 }, {
408 .name = "Filesystem",
409 .size = 0x01DC0000,
410 .offset = 0x00240000,
411 .mask_flags = 0,
412 },
413};
414
415static struct resource flash_resources = {
416 .start = PXA_CS0_PHYS,
417 .end = PXA_CS0_PHYS + SZ_32M - 1,
418 .flags = IORESOURCE_MEM,
419};
420
421static struct flash_platform_data imote2_flash_data = {
422 .map_name = "cfi_probe",
423 .parts = imote2flash_partitions,
424 .nr_parts = ARRAY_SIZE(imote2flash_partitions),
425 .name = "PXA27xOnChipROM",
426 .width = 2,
427};
428
429static struct platform_device imote2_flash_device = {
430 .name = "pxa2xx-flash",
431 .id = 0,
432 .dev = {
433 .platform_data = &imote2_flash_data,
434 },
435 .resource = &flash_resources,
436 .num_resources = 1,
437};
438
439/* Some of the drivers here are out of kernel at the moment (parts of IIO)
440 * and it may be a while before they are in the mainline.
441 */
442static struct i2c_board_info __initdata imote2_i2c_board_info[] = {
443 { /* UCAM sensor board */
444 .type = "max1239",
445 .addr = 0x35,
446 }, { /* ITS400 Sensor board only */
447 .type = "max1363",
448 .addr = 0x34,
449 /* Through a nand gate - Also beware, on V2 sensor board the
450 * pull up resistors are missing.
451 */
452 .irq = IRQ_GPIO(99),
453 }, { /* ITS400 Sensor board only */
454 .type = "tsl2561",
455 .addr = 0x49,
456 /* Through a nand gate - Also beware, on V2 sensor board the
457 * pull up resistors are missing.
458 */
459 .irq = IRQ_GPIO(99),
460 }, { /* ITS400 Sensor board only */
461 .type = "tmp175",
462 .addr = 0x4A,
463 .irq = IRQ_GPIO(96),
464 }, { /* IMB400 Multimedia board */
465 .type = "wm8940",
466 .addr = 0x1A,
467 },
468};
469
470static struct i2c_board_info __initdata imote2_pwr_i2c_board_info[] = {
471 {
472 .type = "da9030",
473 .addr = 0x49,
474 .platform_data = &imote2_da9030_pdata,
475 .irq = gpio_to_irq(1),
476 },
477};
478
479static struct pxa2xx_spi_master pxa_ssp_master_0_info = {
480 .num_chipselect = 1,
481};
482
483static struct pxa2xx_spi_master pxa_ssp_master_1_info = {
484 .num_chipselect = 1,
485};
486
487static struct pxa2xx_spi_master pxa_ssp_master_2_info = {
488 .num_chipselect = 1,
489};
490
491static struct pxa2xx_spi_chip staccel_chip_info = {
492 .tx_threshold = 8,
493 .rx_threshold = 8,
494 .dma_burst_size = 8,
495 .timeout = 235,
496 .gpio_cs = 24,
497};
498
499static struct pxa2xx_spi_chip cc2420_info = {
500 .tx_threshold = 8,
501 .rx_threshold = 8,
502 .dma_burst_size = 8,
503 .timeout = 235,
504 .gpio_cs = 39,
505};
506
507static struct spi_board_info spi_board_info[] __initdata = {
508 { /* Driver in IIO */
509 .modalias = "lis3l02dq",
510 .max_speed_hz = 8000000,/* 8MHz max spi frequency at 3V */
511 .bus_num = 1,
512 .chip_select = 0,
513 .controller_data = &staccel_chip_info,
514 .irq = IRQ_GPIO(96),
515 }, { /* Driver out of kernel as it needs considerable rewriting */
516 .modalias = "cc2420",
517 .max_speed_hz = 6500000,
518 .bus_num = 3,
519 .chip_select = 0,
520 .controller_data = &cc2420_info,
521 },
522};
523
524static void im2_udc_command(int cmd)
525{
526 switch (cmd) {
527 case PXA2XX_UDC_CMD_CONNECT:
528 UP2OCR |= UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE;
529 break;
530 case PXA2XX_UDC_CMD_DISCONNECT:
531 UP2OCR &= ~(UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE);
532 break;
533 }
534}
535
536static struct pxa2xx_udc_mach_info imote2_udc_info __initdata = {
537 .udc_command = im2_udc_command,
538};
539
540static struct platform_device *imote2_devices[] = {
541 &imote2_flash_device,
542 &imote2_leds,
543 &sht15,
544};
545
546static struct i2c_pxa_platform_data i2c_pwr_pdata = {
547 .fast_mode = 1,
548};
549
550static struct i2c_pxa_platform_data i2c_pdata = {
551 .fast_mode = 1,
552};
553
554static void __init imote2_init(void)
555{
556 pxa2xx_mfp_config(ARRAY_AND_SIZE(imote2_pin_config));
557
558 pxa_set_ffuart_info(NULL);
559 pxa_set_btuart_info(NULL);
560 pxa_set_stuart_info(NULL);
561
562 platform_add_devices(imote2_devices, ARRAY_SIZE(imote2_devices));
563
564 pxa2xx_set_spi_info(1, &pxa_ssp_master_0_info);
565 pxa2xx_set_spi_info(2, &pxa_ssp_master_1_info);
566 pxa2xx_set_spi_info(3, &pxa_ssp_master_2_info);
567
568 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
569
570 i2c_register_board_info(0, imote2_i2c_board_info,
571 ARRAY_SIZE(imote2_i2c_board_info));
572 i2c_register_board_info(1, imote2_pwr_i2c_board_info,
573 ARRAY_SIZE(imote2_pwr_i2c_board_info));
574
575 pxa27x_set_i2c_power_info(&i2c_pwr_pdata);
576 pxa_set_i2c_info(&i2c_pdata);
577
578 pxa_set_mci_info(&imote2_mci_platform_data);
579 pxa_set_udc_info(&imote2_udc_info);
580}
581
582MACHINE_START(INTELMOTE2, "IMOTE 2")
583 .phys_io = 0x40000000,
584 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
585 .map_io = pxa_map_io,
586 .init_irq = pxa27x_init_irq,
587 .timer = &pxa_timer,
588 .init_machine = imote2_init,
589 .boot_params = 0xA0000100,
590MACHINE_END
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