summaryrefslogtreecommitdiff
path: root/arch/arm/mach-pxa/imote2.c
blob: b2f878bd460b5d136570560b8fe9f769ebb9d675 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
/*
 * linux/arch/arm/mach-pxa/imote2.c
 *
 * Author:	Ed C. Epp
 * Created:	Nov 05, 2002
 * Copyright:	Intel Corp.
 *
 * Modified 2008:  Jonathan Cameron
 *
 * The Imote2 is a wireless sensor node platform sold
 * by Crossbow (www.xbow.com).
 */

#include <linux/init.h>
#include <linux/device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/platform_device.h>
#include <linux/regulator/machine.h>
#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/spi/spi.h>
#include <linux/i2c.h>
#include <linux/mfd/da903x.h>
#include <linux/sht15.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/flash.h>

#include <mach/pxa27x.h>
#include <plat/i2c.h>
#include <mach/udc.h>
#include <mach/mmc.h>
#include <mach/pxa2xx_spi.h>
#include <mach/pxa27x-udc.h>

#include "devices.h"
#include "generic.h"

static unsigned long imote2_pin_config[] __initdata = {

	/* Device Identification for wakeup*/
	GPIO102_GPIO,

	/* Button */
	GPIO91_GPIO,

	/* DA9030 */
	GPIO1_GPIO,

	/* MMC */
	GPIO32_MMC_CLK,
	GPIO112_MMC_CMD,
	GPIO92_MMC_DAT_0,
	GPIO109_MMC_DAT_1,
	GPIO110_MMC_DAT_2,
	GPIO111_MMC_DAT_3,

	/* 802.15.4 radio - driver out of mainline */
	GPIO22_GPIO,			/* CC_RSTN */
	GPIO114_GPIO,			/* CC_FIFO */
	GPIO116_GPIO,			/* CC_CCA */
	GPIO0_GPIO,			/* CC_FIFOP */
	GPIO16_GPIO,			/* CCSFD */
	GPIO115_GPIO,			/* Power enable */

	/* I2C */
	GPIO117_I2C_SCL,
	GPIO118_I2C_SDA,

	/* SSP 3 - 802.15.4 radio */
	GPIO39_GPIO,			/* Chip Select */
	GPIO34_SSP3_SCLK,
	GPIO35_SSP3_TXD,
	GPIO41_SSP3_RXD,

	/* SSP 2 - to daughter boards */
	GPIO37_GPIO,			/* Chip Select */
	GPIO36_SSP2_SCLK,
	GPIO38_SSP2_TXD,
	GPIO11_SSP2_RXD,

	/* SSP 1 - to daughter boards */
	GPIO24_GPIO,			/* Chip Select */
	GPIO23_SSP1_SCLK,
	GPIO25_SSP1_TXD,
	GPIO26_SSP1_RXD,

	/* BTUART Basic Connector*/
	GPIO42_BTUART_RXD,
	GPIO43_BTUART_TXD,
	GPIO44_BTUART_CTS,
	GPIO45_BTUART_RTS,

	/* STUART Serial console via debug board*/
	GPIO46_STUART_RXD,
	GPIO47_STUART_TXD,

	/* Basic sensor board */
	GPIO96_GPIO,	/* accelerometer interrupt */
	GPIO99_GPIO,	/* ADC interrupt */

	/* SHT15 */
	GPIO100_GPIO,
	GPIO98_GPIO,

	/* Connector pins specified as gpios */
	GPIO94_GPIO, /* large basic connector pin 14 */
	GPIO10_GPIO, /* large basic connector pin 23 */

	/* LEDS */
	GPIO103_GPIO, /* red led */
	GPIO104_GPIO, /* green led */
	GPIO105_GPIO, /* blue led */
};

static struct sht15_platform_data platform_data_sht15 = {
	.gpio_data =  100,
	.gpio_sck  =  98,
};

static struct platform_device sht15 = {
	.name = "sht15",
	.id = -1,
	.dev = {
		.platform_data = &platform_data_sht15,
	},
};

static struct regulator_consumer_supply imote2_sensor_3_con[] = {
	{
		.dev = &sht15.dev,
		.supply = "vcc",
	},
};

static struct gpio_led imote2_led_pins[] = {
	{
		.name       =  "imote2:red",
		.gpio       = 103,
		.active_low = 1,
	}, {
		.name       = "imote2:green",
		.gpio       = 104,
		.active_low = 1,
	}, {
		.name       = "imote2:blue",
		.gpio       = 105,
		.active_low = 1,
	},
};

static struct gpio_led_platform_data imote2_led_data = {
	.num_leds = ARRAY_SIZE(imote2_led_pins),
	.leds     = imote2_led_pins,
};

static struct platform_device imote2_leds = {
	.name = "leds-gpio",
	.id   = -1,
	.dev = {
		.platform_data = &imote2_led_data,
	},
};

/* Reverse engineered partly from Platformx drivers */
enum imote2_ldos{
	vcc_vref,
	vcc_cc2420,
	vcc_mica,
	vcc_bt,
	/* The two voltages available to sensor boards */
	vcc_sensor_1_8,
	vcc_sensor_3,

	vcc_sram_ext, /* directly connected to the pxa271 */
	vcc_pxa_pll,
	vcc_pxa_usim, /* Reference voltage for certain gpios */
	vcc_pxa_mem,
	vcc_pxa_flash,
	vcc_pxa_core, /*Dc-Dc buck not yet supported */
	vcc_lcd,
	vcc_bb,
	vcc_bbio,
	vcc_io, /* cc2420 802.15.4 radio and pxa vcc_io ?*/
};

/* The values of the various regulator constraints are obviously dependent
 * on exactly what is wired to each ldo.  Unfortunately this information is
 * not generally available.  More information has been requested from Xbow
 * but as of yet they haven't been forthcoming.
 *
 * Some of these are clearly Stargate 2 related (no way of plugging
 * in an lcd on the IM2 for example!).
 */
static struct regulator_init_data imote2_ldo_init_data[] = {
	[vcc_bbio] = {
		.constraints = { /* board default 1.8V */
			.name = "vcc_bbio",
			.min_uV = 1800000,
			.max_uV = 1800000,
		},
	},
	[vcc_bb] = {
		.constraints = { /* board default 2.8V */
			.name = "vcc_bb",
			.min_uV = 2700000,
			.max_uV = 3000000,
		},
	},
	[vcc_pxa_flash] = {
		.constraints = {/* default is 1.8V */
			.name = "vcc_pxa_flash",
			.min_uV = 1800000,
			.max_uV = 1800000,
		},
	},
	[vcc_cc2420] = { /* also vcc_io */
		.constraints = {
			/* board default is 2.8V */
			.name = "vcc_cc2420",
			.min_uV = 2700000,
			.max_uV = 3300000,
		},
	},
	[vcc_vref] = { /* Reference for what? */
		.constraints = { /* default 1.8V */
			.name = "vcc_vref",
			.min_uV = 1800000,
			.max_uV = 1800000,
		},
	},
	[vcc_sram_ext] = {
		.constraints = { /* default 2.8V */
			.name = "vcc_sram_ext",
			.min_uV = 2800000,
			.max_uV = 2800000,
		},
	},
	[vcc_mica] = {
		.constraints = { /* default 2.8V */
			.name = "vcc_mica",
			.min_uV = 2800000,
			.max_uV = 2800000,
		},
	},
	[vcc_bt] = {
		.constraints = { /* default 2.8V */
			.name = "vcc_bt",
			.min_uV = 2800000,
			.max_uV = 2800000,
		},
	},
	[vcc_lcd] = {
		.constraints = { /* default 2.8V */
			.name = "vcc_lcd",
			.min_uV = 2700000,
			.max_uV = 3300000,
		},
	},
	[vcc_io] = { /* Same or higher than everything
			  * bar vccbat and vccusb */
		.constraints = { /* default 2.8V */
			.name = "vcc_io",
			.min_uV = 2692000,
			.max_uV = 3300000,
		},
	},
	[vcc_sensor_1_8] = {
		.constraints = { /* default 1.8V */
			.name = "vcc_sensor_1_8",
			.min_uV = 1800000,
			.max_uV = 1800000,
		},
	},
	[vcc_sensor_3] = { /* curiously default 2.8V */
		.constraints = {
			.name = "vcc_sensor_3",
			.min_uV = 2800000,
			.max_uV = 3000000,
		},
		.num_consumer_supplies = ARRAY_SIZE(imote2_sensor_3_con),
		.consumer_supplies = imote2_sensor_3_con,
	},
	[vcc_pxa_pll] = { /* 1.17V - 1.43V, default 1.3V*/
		.constraints = {
			.name = "vcc_pxa_pll",
			.min_uV = 1170000,
			.max_uV = 1430000,
		},
	},
	[vcc_pxa_usim] = {
		.constraints = { /* default 1.8V */
			.name = "vcc_pxa_usim",
			.min_uV = 1710000,
			.max_uV = 2160000,
		},
	},
	[vcc_pxa_mem] = {
		.constraints = { /* default 1.8V */
			.name = "vcc_pxa_mem",
			.min_uV = 1800000,
			.max_uV = 1800000,
		},
	},
};

static struct da903x_subdev_info imote2_da9030_subdevs[] = {
	{
		.name = "da903x-regulator",
		.id = DA9030_ID_LDO2,
		.platform_data = &imote2_ldo_init_data[vcc_bbio],
	}, {
		.name = "da903x-regulator",
		.id = DA9030_ID_LDO3,
		.platform_data = &imote2_ldo_init_data[vcc_bb],
	}, {
		.name = "da903x-regulator",
		.id = DA9030_ID_LDO4,
		.platform_data = &imote2_ldo_init_data[vcc_pxa_flash],
	}, {
		.name = "da903x-regulator",
		.id = DA9030_ID_LDO5,
		.platform_data = &imote2_ldo_init_data[vcc_cc2420],
	}, {
		.name = "da903x-regulator",
		.id = DA9030_ID_LDO6,
		.platform_data = &imote2_ldo_init_data[vcc_vref],
	}, {
		.name = "da903x-regulator",
		.id = DA9030_ID_LDO7,
		.platform_data = &imote2_ldo_init_data[vcc_sram_ext],
	}, {
		.name = "da903x-regulator",
		.id = DA9030_ID_LDO8,
		.platform_data = &imote2_ldo_init_data[vcc_mica],
	}, {
		.name = "da903x-regulator",
		.id = DA9030_ID_LDO9,
		.platform_data = &imote2_ldo_init_data[vcc_bt],
	}, {
		.name = "da903x-regulator",
		.id = DA9030_ID_LDO10,
		.platform_data = &imote2_ldo_init_data[vcc_sensor_1_8],
	}, {
		.name = "da903x-regulator",
		.id = DA9030_ID_LDO11,
		.platform_data = &imote2_ldo_init_data[vcc_sensor_3],
	}, {
		.name = "da903x-regulator",
		.id = DA9030_ID_LDO12,
		.platform_data = &imote2_ldo_init_data[vcc_lcd],
	}, {
		.name = "da903x-regulator",
		.id = DA9030_ID_LDO15,
		.platform_data = &imote2_ldo_init_data[vcc_pxa_pll],
	}, {
		.name = "da903x-regulator",
		.id = DA9030_ID_LDO17,
		.platform_data = &imote2_ldo_init_data[vcc_pxa_usim],
	}, {
		.name = "da903x-regulator",
		.id = DA9030_ID_LDO18,
		.platform_data = &imote2_ldo_init_data[vcc_io],
	}, {
		.name = "da903x-regulator",
		.id = DA9030_ID_LDO19,
		.platform_data = &imote2_ldo_init_data[vcc_pxa_mem],
	},
};

static struct da903x_platform_data imote2_da9030_pdata = {
	.num_subdevs = ARRAY_SIZE(imote2_da9030_subdevs),
	.subdevs = imote2_da9030_subdevs,
};

/* As the the imote2 doesn't currently have a conventional SD slot
 * there is no option to hotplug cards, making all this rather simple
 */
static int imote2_mci_get_ro(struct device *dev)
{
	return 0;
}

/* Rather simple case as hotplugging not possible */
static struct pxamci_platform_data imote2_mci_platform_data = {
	.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, /* default anyway */
	.get_ro = imote2_mci_get_ro,
	.gpio_card_detect = -1,
	.gpio_card_ro	= -1,
	.gpio_power = -1,
};

static struct mtd_partition imote2flash_partitions[] = {
	{
		.name = "Bootloader",
		.size = 0x00040000,
		.offset = 0,
		.mask_flags = MTD_WRITEABLE,
	}, {
		.name = "Kernel",
		.size = 0x00200000,
		.offset = 0x00040000,
		.mask_flags = 0,
	}, {
		.name = "Filesystem",
		.size = 0x01DC0000,
		.offset = 0x00240000,
		.mask_flags = 0,
	},
};

static struct resource flash_resources = {
	.start = PXA_CS0_PHYS,
	.end = PXA_CS0_PHYS + SZ_32M - 1,
	.flags = IORESOURCE_MEM,
};

static struct flash_platform_data imote2_flash_data = {
	.map_name = "cfi_probe",
	.parts = imote2flash_partitions,
	.nr_parts = ARRAY_SIZE(imote2flash_partitions),
	.name = "PXA27xOnChipROM",
	.width = 2,
};

static struct platform_device imote2_flash_device = {
	.name = "pxa2xx-flash",
	.id = 0,
	.dev = {
		.platform_data = &imote2_flash_data,
	},
	.resource = &flash_resources,
	.num_resources = 1,
};

/* Some of the drivers here are out of kernel at the moment (parts of IIO)
 * and it may be a while before they are in the mainline.
 */
static struct i2c_board_info __initdata imote2_i2c_board_info[] = {
	{ /* UCAM sensor board */
		.type = "max1239",
		.addr = 0x35,
	}, { /* ITS400 Sensor board only */
		.type = "max1363",
		.addr = 0x34,
		/* Through a nand gate - Also beware, on V2 sensor board the
		 * pull up resistors are missing.
		 */
		.irq = IRQ_GPIO(99),
	}, { /* ITS400 Sensor board only */
		.type = "tsl2561",
		.addr = 0x49,
		/* Through a nand gate - Also beware, on V2 sensor board the
		 * pull up resistors are missing.
		 */
		.irq = IRQ_GPIO(99),
	}, { /* ITS400 Sensor board only */
		.type = "tmp175",
		.addr = 0x4A,
		.irq = IRQ_GPIO(96),
	}, { /* IMB400 Multimedia board */
		.type = "wm8940",
		.addr = 0x1A,
	},
};

static struct i2c_board_info __initdata imote2_pwr_i2c_board_info[] = {
	{
		.type = "da9030",
		.addr = 0x49,
		.platform_data = &imote2_da9030_pdata,
		.irq = gpio_to_irq(1),
	},
};

static struct pxa2xx_spi_master pxa_ssp_master_0_info = {
	.num_chipselect = 1,
};

static struct pxa2xx_spi_master pxa_ssp_master_1_info = {
	.num_chipselect = 1,
};

static struct pxa2xx_spi_master pxa_ssp_master_2_info = {
	.num_chipselect = 1,
};

static struct pxa2xx_spi_chip staccel_chip_info = {
	.tx_threshold = 8,
	.rx_threshold = 8,
	.dma_burst_size = 8,
	.timeout = 235,
	.gpio_cs = 24,
};

static struct pxa2xx_spi_chip cc2420_info = {
	.tx_threshold = 8,
	.rx_threshold = 8,
	.dma_burst_size = 8,
	.timeout = 235,
	.gpio_cs = 39,
};

static struct spi_board_info spi_board_info[] __initdata = {
	{ /* Driver in IIO */
		.modalias = "lis3l02dq",
		.max_speed_hz = 8000000,/* 8MHz max spi frequency at 3V */
		.bus_num = 1,
		.chip_select = 0,
		.controller_data = &staccel_chip_info,
		.irq = IRQ_GPIO(96),
	}, { /* Driver out of kernel as it needs considerable rewriting */
		.modalias = "cc2420",
		.max_speed_hz = 6500000,
		.bus_num = 3,
		.chip_select = 0,
		.controller_data = &cc2420_info,
	},
};

static void im2_udc_command(int cmd)
{
	switch (cmd) {
	case PXA2XX_UDC_CMD_CONNECT:
		UP2OCR |=  UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE;
		break;
	case PXA2XX_UDC_CMD_DISCONNECT:
		UP2OCR &= ~(UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE);
		break;
	}
}

static struct pxa2xx_udc_mach_info imote2_udc_info __initdata = {
	.udc_command		= im2_udc_command,
};

static struct platform_device *imote2_devices[] = {
	&imote2_flash_device,
	&imote2_leds,
	&sht15,
};

static struct i2c_pxa_platform_data i2c_pwr_pdata = {
	.fast_mode = 1,
};

static struct i2c_pxa_platform_data i2c_pdata = {
	.fast_mode = 1,
};

static void __init imote2_init(void)
{
	pxa2xx_mfp_config(ARRAY_AND_SIZE(imote2_pin_config));

	pxa_set_ffuart_info(NULL);
	pxa_set_btuart_info(NULL);
	pxa_set_stuart_info(NULL);

	/* SPI chip select directions - all other directions should
	 * be handled by drivers.*/
	gpio_direction_output(37, 0);

	platform_add_devices(imote2_devices, ARRAY_SIZE(imote2_devices));

	pxa2xx_set_spi_info(1, &pxa_ssp_master_0_info);
	pxa2xx_set_spi_info(2, &pxa_ssp_master_1_info);
	pxa2xx_set_spi_info(3, &pxa_ssp_master_2_info);

	spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));

	i2c_register_board_info(0, imote2_i2c_board_info,
				ARRAY_SIZE(imote2_i2c_board_info));
	i2c_register_board_info(1, imote2_pwr_i2c_board_info,
				ARRAY_SIZE(imote2_pwr_i2c_board_info));

	pxa27x_set_i2c_power_info(&i2c_pwr_pdata);
	pxa_set_i2c_info(&i2c_pdata);

	pxa_set_mci_info(&imote2_mci_platform_data);
	pxa_set_udc_info(&imote2_udc_info);
}

MACHINE_START(INTELMOTE2, "IMOTE 2")
	.phys_io	= 0x40000000,
	.io_pg_offst	= (io_p2v(0x40000000) >> 18) & 0xfffc,
	.map_io		= pxa_map_io,
	.init_irq	= pxa27x_init_irq,
	.timer		= &pxa_timer,
	.init_machine	= imote2_init,
	.boot_params	= 0xA0000100,
MACHINE_END