2 * linux/arch/arm/mach-pxa/imote2.c
5 * Created: Nov 05, 2002
6 * Copyright: Intel Corp.
8 * Modified 2008: Jonathan Cameron
10 * The Imote2 is a wireless sensor node platform sold
11 * by Crossbow (www.xbow.com).
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>
27 #include <asm/mach-types.h>
28 #include <asm/mach/arch.h>
29 #include <asm/mach/map.h>
30 #include <asm/mach/flash.h>
32 #include <mach/pxa27x.h>
36 #include <mach/pxa2xx_spi.h>
37 #include <mach/pxa27x-udc.h>
42 static unsigned long imote2_pin_config[] __initdata = {
44 /* Device Identification for wakeup*/
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 GPIO39_GPIO, /* CSn */
68 GPIO115_GPIO, /* Power enable */
74 /* SSP 3 - 802.15.4 radio */
75 GPIO39_GPIO, /* Chip Select */
80 /* SSP 2 - to daughter boards */
81 GPIO37_GPIO, /* Chip Select */
86 /* SSP 1 - to daughter boards */
87 GPIO24_GPIO, /* Chip Select */
92 /* BTUART Basic Connector*/
98 /* STUART Serial console via debug board*/
102 /* Basic sensor board */
103 GPIO96_GPIO, /* accelerometer interrupt */
104 GPIO99_GPIO, /* ADC interrupt */
110 /* Connector pins specified as gpios */
111 GPIO94_GPIO, /* large basic connector pin 14 */
112 GPIO10_GPIO, /* large basic connector pin 23 */
115 GPIO103_GPIO, /* red led */
116 GPIO104_GPIO, /* green led */
117 GPIO105_GPIO, /* blue led */
120 static struct sht15_platform_data platform_data_sht15 = {
125 static struct platform_device sht15 = {
129 .platform_data = &platform_data_sht15,
133 static struct regulator_consumer_supply imote2_sensor_3_con[] = {
140 static struct gpio_led imote2_led_pins[] = {
142 .name = "imote2:red",
146 .name = "imote2:green",
150 .name = "imote2:blue",
156 static struct gpio_led_platform_data imote2_led_data = {
157 .num_leds = ARRAY_SIZE(imote2_led_pins),
158 .leds = imote2_led_pins,
161 static struct platform_device imote2_leds = {
165 .platform_data = &imote2_led_data,
169 /* Reverse engineered partly from Platformx drivers */
175 /* The two voltages available to sensor boards */
179 vcc_sram_ext, /* directly connected to the pxa271 */
181 vcc_pxa_usim, /* Reference voltage for certain gpios */
184 vcc_pxa_core, /*Dc-Dc buck not yet supported */
188 vcc_io, /* cc2420 802.15.4 radio and pxa vcc_io ?*/
191 /* The values of the various regulator constraints are obviously dependent
192 * on exactly what is wired to each ldo. Unfortunately this information is
193 * not generally available. More information has been requested from Xbow
194 * but as of yet they haven't been forthcoming.
196 * Some of these are clearly Stargate 2 related (no way of plugging
197 * in an lcd on the IM2 for example!).
199 static struct regulator_init_data imote2_ldo_init_data[] = {
201 .constraints = { /* board default 1.8V */
208 .constraints = { /* board default 2.8V */
215 .constraints = {/* default is 1.8V */
216 .name = "vcc_pxa_flash",
221 [vcc_cc2420] = { /* also vcc_io */
223 /* board default is 2.8V */
224 .name = "vcc_cc2420",
229 [vcc_vref] = { /* Reference for what? */
230 .constraints = { /* default 1.8V */
237 .constraints = { /* default 2.8V */
238 .name = "vcc_sram_ext",
244 .constraints = { /* default 2.8V */
251 .constraints = { /* default 2.8V */
258 .constraints = { /* default 2.8V */
264 [vcc_io] = { /* Same or higher than everything
265 * bar vccbat and vccusb */
266 .constraints = { /* default 2.8V */
273 .constraints = { /* default 1.8V */
274 .name = "vcc_sensor_1_8",
279 [vcc_sensor_3] = { /* curiously default 2.8V */
281 .name = "vcc_sensor_3",
285 .num_consumer_supplies = ARRAY_SIZE(imote2_sensor_3_con),
286 .consumer_supplies = imote2_sensor_3_con,
288 [vcc_pxa_pll] = { /* 1.17V - 1.43V, default 1.3V*/
290 .name = "vcc_pxa_pll",
296 .constraints = { /* default 1.8V */
297 .name = "vcc_pxa_usim",
303 .constraints = { /* default 1.8V */
304 .name = "vcc_pxa_mem",
311 static struct da903x_subdev_info imote2_da9030_subdevs[] = {
313 .name = "da903x-regulator",
314 .id = DA9030_ID_LDO2,
315 .platform_data = &imote2_ldo_init_data[vcc_bbio],
317 .name = "da903x-regulator",
318 .id = DA9030_ID_LDO3,
319 .platform_data = &imote2_ldo_init_data[vcc_bb],
321 .name = "da903x-regulator",
322 .id = DA9030_ID_LDO4,
323 .platform_data = &imote2_ldo_init_data[vcc_pxa_flash],
325 .name = "da903x-regulator",
326 .id = DA9030_ID_LDO5,
327 .platform_data = &imote2_ldo_init_data[vcc_cc2420],
329 .name = "da903x-regulator",
330 .id = DA9030_ID_LDO6,
331 .platform_data = &imote2_ldo_init_data[vcc_vref],
333 .name = "da903x-regulator",
334 .id = DA9030_ID_LDO7,
335 .platform_data = &imote2_ldo_init_data[vcc_sram_ext],
337 .name = "da903x-regulator",
338 .id = DA9030_ID_LDO8,
339 .platform_data = &imote2_ldo_init_data[vcc_mica],
341 .name = "da903x-regulator",
342 .id = DA9030_ID_LDO9,
343 .platform_data = &imote2_ldo_init_data[vcc_bt],
345 .name = "da903x-regulator",
346 .id = DA9030_ID_LDO10,
347 .platform_data = &imote2_ldo_init_data[vcc_sensor_1_8],
349 .name = "da903x-regulator",
350 .id = DA9030_ID_LDO11,
351 .platform_data = &imote2_ldo_init_data[vcc_sensor_3],
353 .name = "da903x-regulator",
354 .id = DA9030_ID_LDO12,
355 .platform_data = &imote2_ldo_init_data[vcc_lcd],
357 .name = "da903x-regulator",
358 .id = DA9030_ID_LDO15,
359 .platform_data = &imote2_ldo_init_data[vcc_pxa_pll],
361 .name = "da903x-regulator",
362 .id = DA9030_ID_LDO17,
363 .platform_data = &imote2_ldo_init_data[vcc_pxa_usim],
365 .name = "da903x-regulator",
366 .id = DA9030_ID_LDO18,
367 .platform_data = &imote2_ldo_init_data[vcc_io],
369 .name = "da903x-regulator",
370 .id = DA9030_ID_LDO19,
371 .platform_data = &imote2_ldo_init_data[vcc_pxa_mem],
375 static struct da903x_platform_data imote2_da9030_pdata = {
376 .num_subdevs = ARRAY_SIZE(imote2_da9030_subdevs),
377 .subdevs = imote2_da9030_subdevs,
380 /* As the the imote2 doesn't currently have a conventional SD slot
381 * there is no option to hotplug cards, making all this rather simple
383 static int imote2_mci_get_ro(struct device *dev)
388 /* Rather simple case as hotplugging not possible */
389 static struct pxamci_platform_data imote2_mci_platform_data = {
390 .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, /* default anyway */
391 .get_ro = imote2_mci_get_ro,
392 .gpio_card_detect = -1,
397 static struct mtd_partition imote2flash_partitions[] = {
399 .name = "Bootloader",
402 .mask_flags = MTD_WRITEABLE,
406 .offset = 0x00040000,
409 .name = "Filesystem",
411 .offset = 0x00240000,
416 static struct resource flash_resources = {
417 .start = PXA_CS0_PHYS,
418 .end = PXA_CS0_PHYS + SZ_32M - 1,
419 .flags = IORESOURCE_MEM,
422 static struct flash_platform_data imote2_flash_data = {
423 .map_name = "cfi_probe",
424 .parts = imote2flash_partitions,
425 .nr_parts = ARRAY_SIZE(imote2flash_partitions),
426 .name = "PXA27xOnChipROM",
430 static struct platform_device imote2_flash_device = {
431 .name = "pxa2xx-flash",
434 .platform_data = &imote2_flash_data,
436 .resource = &flash_resources,
440 /* Some of the drivers here are out of kernel at the moment (parts of IIO)
441 * and it may be a while before they are in the mainline.
443 static struct i2c_board_info __initdata imote2_i2c_board_info[] = {
444 { /* UCAM sensor board */
447 }, { /* ITS400 Sensor board only */
450 /* Through a nand gate - Also beware, on V2 sensor board the
451 * pull up resistors are missing.
454 }, { /* ITS400 Sensor board only */
457 /* Through a nand gate - Also beware, on V2 sensor board the
458 * pull up resistors are missing.
461 }, { /* ITS400 Sensor board only */
465 }, { /* IMB400 Multimedia board */
471 static struct i2c_board_info __initdata imote2_pwr_i2c_board_info[] = {
475 .platform_data = &imote2_da9030_pdata,
476 .irq = gpio_to_irq(1),
480 static struct pxa2xx_spi_master pxa_ssp_master_0_info = {
484 static struct pxa2xx_spi_master pxa_ssp_master_1_info = {
488 static struct pxa2xx_spi_master pxa_ssp_master_2_info = {
492 static struct pxa2xx_spi_chip staccel_chip_info = {
500 static struct pxa2xx_spi_chip cc2420_info = {
508 static struct spi_board_info spi_board_info[] __initdata = {
509 { /* Driver in IIO */
510 .modalias = "lis3l02dq",
511 .max_speed_hz = 8000000,/* 8MHz max spi frequency at 3V */
514 .controller_data = &staccel_chip_info,
516 }, { /* Driver out of kernel as it needs considerable rewriting */
517 .modalias = "cc2420",
518 .max_speed_hz = 6500000,
521 .controller_data = &cc2420_info,
525 static void im2_udc_command(int cmd)
528 case PXA2XX_UDC_CMD_CONNECT:
529 UP2OCR |= UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE;
531 case PXA2XX_UDC_CMD_DISCONNECT:
532 UP2OCR &= ~(UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE);
537 static struct pxa2xx_udc_mach_info imote2_udc_info __initdata = {
538 .udc_command = im2_udc_command,
541 static struct platform_device *imote2_devices[] = {
542 &imote2_flash_device,
547 static struct i2c_pxa_platform_data i2c_pwr_pdata = {
551 static struct i2c_pxa_platform_data i2c_pdata = {
555 static void __init imote2_init(void)
557 pxa2xx_mfp_config(ARRAY_AND_SIZE(imote2_pin_config));
559 pxa_set_ffuart_info(NULL);
560 pxa_set_btuart_info(NULL);
561 pxa_set_stuart_info(NULL);
563 /* SPI chip select directions - all other directions should
564 * be handled by drivers.*/
565 gpio_direction_output(37, 0);
567 platform_add_devices(imote2_devices, ARRAY_SIZE(imote2_devices));
569 pxa2xx_set_spi_info(1, &pxa_ssp_master_0_info);
570 pxa2xx_set_spi_info(2, &pxa_ssp_master_1_info);
571 pxa2xx_set_spi_info(3, &pxa_ssp_master_2_info);
573 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
575 i2c_register_board_info(0, imote2_i2c_board_info,
576 ARRAY_SIZE(imote2_i2c_board_info));
577 i2c_register_board_info(1, imote2_pwr_i2c_board_info,
578 ARRAY_SIZE(imote2_pwr_i2c_board_info));
580 pxa27x_set_i2c_power_info(&i2c_pwr_pdata);
581 pxa_set_i2c_info(&i2c_pdata);
583 pxa_set_mci_info(&imote2_mci_platform_data);
584 pxa_set_udc_info(&imote2_udc_info);
587 MACHINE_START(INTELMOTE2, "IMOTE 2")
588 .phys_io = 0x40000000,
589 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
590 .map_io = pxa_map_io,
591 .init_irq = pxa27x_init_irq,
593 .init_machine = imote2_init,
594 .boot_params = 0xA0000100,