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
26 #include <asm/mach-types.h>
27 #include <asm/mach/arch.h>
28 #include <asm/mach/map.h>
29 #include <asm/mach/flash.h>
30
31 #include <mach/i2c.h>
32 #include <mach/pxa-regs.h>
33 #include <mach/pxa2xx-regs.h>
34 #include <mach/mfp-pxa27x.h>
35 #include <mach/regs-ssp.h>
36 #include <mach/udc.h>
37 #include <mach/mmc.h>
38 #include <mach/pxa2xx_spi.h>
39 #include <mach/pxa27x-udc.h>
40
41 #include "devices.h"
42 #include "generic.h"
43
44 static unsigned long imote2_pin_config[] __initdata = {
45
46 /* Device Identification for wakeup*/
47 GPIO102_GPIO,
48
49 /* Button */
50 GPIO91_GPIO,
51
52 /* DA9030 */
53 GPIO1_GPIO,
54
55 /* MMC */
56 GPIO32_MMC_CLK,
57 GPIO112_MMC_CMD,
58 GPIO92_MMC_DAT_0,
59 GPIO109_MMC_DAT_1,
60 GPIO110_MMC_DAT_2,
61 GPIO111_MMC_DAT_3,
62
63 /* 802.15.4 radio - driver out of mainline */
64 GPIO22_GPIO, /* CC_RSTN */
65 GPIO114_GPIO, /* CC_FIFO */
66 GPIO116_GPIO, /* CC_CCA */
67 GPIO0_GPIO, /* CC_FIFOP */
68 GPIO16_GPIO, /* CCSFD */
69 GPIO39_GPIO, /* CSn */
70 GPIO115_GPIO, /* Power enable */
71
72 /* I2C */
73 GPIO117_I2C_SCL,
74 GPIO118_I2C_SDA,
75
76 /* SSP 3 - 802.15.4 radio */
77 GPIO39_GPIO, /* Chip Select */
78 GPIO34_SSP3_SCLK,
79 GPIO35_SSP3_TXD,
80 GPIO41_SSP3_RXD,
81
82 /* SSP 2 - to daughter boards */
83 GPIO37_GPIO, /* Chip Select */
84 GPIO36_SSP2_SCLK,
85 GPIO38_SSP2_TXD,
86 GPIO11_SSP2_RXD,
87
88 /* SSP 1 - to daughter boards */
89 GPIO24_GPIO, /* Chip Select */
90 GPIO23_SSP1_SCLK,
91 GPIO25_SSP1_TXD,
92 GPIO26_SSP1_RXD,
93
94 /* BTUART Basic Connector*/
95 GPIO42_BTUART_RXD,
96 GPIO43_BTUART_TXD,
97 GPIO44_BTUART_CTS,
98 GPIO45_BTUART_RTS,
99
100 /* STUART Serial console via debug board*/
101 GPIO46_STUART_RXD,
102 GPIO47_STUART_TXD,
103
104 /* Basic sensor board */
105 GPIO96_GPIO, /* accelerometer interrupt */
106 GPIO99_GPIO, /* ADC interrupt */
107
108 /* Connector pins specified as gpios */
109 GPIO94_GPIO, /* large basic connector pin 14 */
110 GPIO10_GPIO, /* large basic connector pin 23 */
111
112 /* LEDS */
113 GPIO103_GPIO, /* red led */
114 GPIO104_GPIO, /* green led */
115 GPIO105_GPIO, /* blue led */
116 };
117
118 static struct gpio_led imote2_led_pins[] = {
119 {
120 .name = "imote2:red",
121 .gpio = 103,
122 .active_low = 1,
123 }, {
124 .name = "imote2:green",
125 .gpio = 104,
126 .active_low = 1,
127 }, {
128 .name = "imote2:blue",
129 .gpio = 105,
130 .active_low = 1,
131 },
132 };
133
134 static struct gpio_led_platform_data imote2_led_data = {
135 .num_leds = ARRAY_SIZE(imote2_led_pins),
136 .leds = imote2_led_pins,
137 };
138
139 static struct platform_device imote2_leds = {
140 .name = "leds-gpio",
141 .id = -1,
142 .dev = {
143 .platform_data = &imote2_led_data,
144 },
145 };
146
147 /* Reverse engineered partly from Platformx drivers */
148 enum imote2_ldos{
149 vcc_vref,
150 vcc_cc2420,
151 vcc_mica,
152 vcc_bt,
153 /* The two voltages available to sensor boards */
154 vcc_sensor_1_8,
155 vcc_sensor_3,
156
157 vcc_sram_ext, /* directly connected to the pxa271 */
158 vcc_pxa_pll,
159 vcc_pxa_usim, /* Reference voltage for certain gpios */
160 vcc_pxa_mem,
161 vcc_pxa_flash,
162 vcc_pxa_core, /*Dc-Dc buck not yet supported */
163 vcc_lcd,
164 vcc_bb,
165 vcc_bbio,
166 vcc_io, /* cc2420 802.15.4 radio and pxa vcc_io ?*/
167 };
168
169 /* The values of the various regulator constraints are obviously dependent
170 * on exactly what is wired to each ldo. Unfortunately this information is
171 * not generally available. More information has been requested from Xbow
172 * but as of yet they haven't been forthcoming.
173 *
174 * Some of these are clearly Stargate 2 related (no way of plugging
175 * in an lcd on the IM2 for example!).
176 */
177 static struct regulator_init_data imote2_ldo_init_data[] = {
178 [vcc_bbio] = {
179 .constraints = { /* board default 1.8V */
180 .name = "vcc_bbio",
181 .min_uV = 1800000,
182 .max_uV = 1800000,
183 },
184 },
185 [vcc_bb] = {
186 .constraints = { /* board default 2.8V */
187 .name = "vcc_bb",
188 .min_uV = 2700000,
189 .max_uV = 3000000,
190 },
191 },
192 [vcc_pxa_flash] = {
193 .constraints = {/* default is 1.8V */
194 .name = "vcc_pxa_flash",
195 .min_uV = 1800000,
196 .max_uV = 1800000,
197 },
198 },
199 [vcc_cc2420] = { /* also vcc_io */
200 .constraints = {
201 /* board default is 2.8V */
202 .name = "vcc_cc2420",
203 .min_uV = 2700000,
204 .max_uV = 3300000,
205 },
206 },
207 [vcc_vref] = { /* Reference for what? */
208 .constraints = { /* default 1.8V */
209 .name = "vcc_vref",
210 .min_uV = 1800000,
211 .max_uV = 1800000,
212 },
213 },
214 [vcc_sram_ext] = {
215 .constraints = { /* default 2.8V */
216 .name = "vcc_sram_ext",
217 .min_uV = 2800000,
218 .max_uV = 2800000,
219 },
220 },
221 [vcc_mica] = {
222 .constraints = { /* default 2.8V */
223 .name = "vcc_mica",
224 .min_uV = 2800000,
225 .max_uV = 2800000,
226 },
227 },
228 [vcc_bt] = {
229 .constraints = { /* default 2.8V */
230 .name = "vcc_bt",
231 .min_uV = 2800000,
232 .max_uV = 2800000,
233 },
234 },
235 [vcc_lcd] = {
236 .constraints = { /* default 2.8V */
237 .name = "vcc_lcd",
238 .min_uV = 2700000,
239 .max_uV = 3300000,
240 },
241 },
242 [vcc_io] = { /* Same or higher than everything
243 * bar vccbat and vccusb */
244 .constraints = { /* default 2.8V */
245 .name = "vcc_io",
246 .min_uV = 2692000,
247 .max_uV = 3300000,
248 },
249 },
250 [vcc_sensor_1_8] = {
251 .constraints = { /* default 1.8V */
252 .name = "vcc_sensor_1_8",
253 .min_uV = 1800000,
254 .max_uV = 1800000,
255 },
256 },
257 [vcc_sensor_3] = { /* curiously default 2.8V */
258 .constraints = {
259 .name = "vcc_sensor_3",
260 .min_uV = 2800000,
261 .max_uV = 3000000,
262 },
263 },
264 [vcc_pxa_pll] = { /* 1.17V - 1.43V, default 1.3V*/
265 .constraints = {
266 .name = "vcc_pxa_pll",
267 .min_uV = 1170000,
268 .max_uV = 1430000,
269 },
270 },
271 [vcc_pxa_usim] = {
272 .constraints = { /* default 1.8V */
273 .name = "vcc_pxa_usim",
274 .min_uV = 1710000,
275 .max_uV = 2160000,
276 },
277 },
278 [vcc_pxa_mem] = {
279 .constraints = { /* default 1.8V */
280 .name = "vcc_pxa_mem",
281 .min_uV = 1800000,
282 .max_uV = 1800000,
283 },
284 },
285 };
286
287 static struct da903x_subdev_info imote2_da9030_subdevs[] = {
288 {
289 .name = "da903x-regulator",
290 .id = DA9030_ID_LDO2,
291 .platform_data = &imote2_ldo_init_data[vcc_bbio],
292 }, {
293 .name = "da903x-regulator",
294 .id = DA9030_ID_LDO3,
295 .platform_data = &imote2_ldo_init_data[vcc_bb],
296 }, {
297 .name = "da903x-regulator",
298 .id = DA9030_ID_LDO4,
299 .platform_data = &imote2_ldo_init_data[vcc_pxa_flash],
300 }, {
301 .name = "da903x-regulator",
302 .id = DA9030_ID_LDO5,
303 .platform_data = &imote2_ldo_init_data[vcc_cc2420],
304 }, {
305 .name = "da903x-regulator",
306 .id = DA9030_ID_LDO6,
307 .platform_data = &imote2_ldo_init_data[vcc_vref],
308 }, {
309 .name = "da903x-regulator",
310 .id = DA9030_ID_LDO7,
311 .platform_data = &imote2_ldo_init_data[vcc_sram_ext],
312 }, {
313 .name = "da903x-regulator",
314 .id = DA9030_ID_LDO8,
315 .platform_data = &imote2_ldo_init_data[vcc_mica],
316 }, {
317 .name = "da903x-regulator",
318 .id = DA9030_ID_LDO9,
319 .platform_data = &imote2_ldo_init_data[vcc_bt],
320 }, {
321 .name = "da903x-regulator",
322 .id = DA9030_ID_LDO10,
323 .platform_data = &imote2_ldo_init_data[vcc_sensor_1_8],
324 }, {
325 .name = "da903x-regulator",
326 .id = DA9030_ID_LDO11,
327 .platform_data = &imote2_ldo_init_data[vcc_sensor_3],
328 }, {
329 .name = "da903x-regulator",
330 .id = DA9030_ID_LDO12,
331 .platform_data = &imote2_ldo_init_data[vcc_lcd],
332 }, {
333 .name = "da903x-regulator",
334 .id = DA9030_ID_LDO15,
335 .platform_data = &imote2_ldo_init_data[vcc_pxa_pll],
336 }, {
337 .name = "da903x-regulator",
338 .id = DA9030_ID_LDO17,
339 .platform_data = &imote2_ldo_init_data[vcc_pxa_usim],
340 }, {
341 .name = "da903x-regulator",
342 .id = DA9030_ID_LDO18,
343 .platform_data = &imote2_ldo_init_data[vcc_io],
344 }, {
345 .name = "da903x-regulator",
346 .id = DA9030_ID_LDO19,
347 .platform_data = &imote2_ldo_init_data[vcc_pxa_mem],
348 },
349 };
350
351 static struct da903x_platform_data imote2_da9030_pdata = {
352 .num_subdevs = ARRAY_SIZE(imote2_da9030_subdevs),
353 .subdevs = imote2_da9030_subdevs,
354 };
355
356 /* As the the imote2 doesn't currently have a conventional SD slot
357 * there is no option to hotplug cards, making all this rather simple
358 */
imote2_mci_get_ro(struct device * dev)359 static int imote2_mci_get_ro(struct device *dev)
360 {
361 return 0;
362 }
363
364 /* Rather simple case as hotplugging not possible */
365 static struct pxamci_platform_data imote2_mci_platform_data = {
366 .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, /* default anyway */
367 .get_ro = imote2_mci_get_ro,
368 };
369
370 static struct mtd_partition imote2flash_partitions[] = {
371 {
372 .name = "Bootloader",
373 .size = 0x00040000,
374 .offset = 0,
375 .mask_flags = MTD_WRITEABLE,
376 }, {
377 .name = "Kernel",
378 .size = 0x00200000,
379 .offset = 0x00040000,
380 .mask_flags = 0,
381 }, {
382 .name = "Filesystem",
383 .size = 0x01DC0000,
384 .offset = 0x00240000,
385 .mask_flags = 0,
386 },
387 };
388
389 static struct resource flash_resources = {
390 .start = PXA_CS0_PHYS,
391 .end = PXA_CS0_PHYS + SZ_32M - 1,
392 .flags = IORESOURCE_MEM,
393 };
394
395 static struct flash_platform_data imote2_flash_data = {
396 .map_name = "cfi_probe",
397 .parts = imote2flash_partitions,
398 .nr_parts = ARRAY_SIZE(imote2flash_partitions),
399 .name = "PXA27xOnChipROM",
400 .width = 2,
401 };
402
403 static struct platform_device imote2_flash_device = {
404 .name = "pxa2xx-flash",
405 .id = 0,
406 .dev = {
407 .platform_data = &imote2_flash_data,
408 },
409 .resource = &flash_resources,
410 .num_resources = 1,
411 };
412
413 /* Some of the drivers here are out of kernel at the moment (parts of IIO)
414 * and it may be a while before they are in the mainline.
415 */
416 static struct i2c_board_info __initdata imote2_i2c_board_info[] = {
417 { /* UCAM sensor board */
418 .type = "max1238",
419 .addr = 0x35,
420 }, { /* ITS400 Sensor board only */
421 .type = "max1363",
422 .addr = 0x34,
423 /* Through a nand gate - Also beware, on V2 sensor board the
424 * pull up resistors are missing.
425 */
426 .irq = IRQ_GPIO(99),
427 }, { /* ITS400 Sensor board only */
428 .type = "tsl2561",
429 .addr = 0x49,
430 /* Through a nand gate - Also beware, on V2 sensor board the
431 * pull up resistors are missing.
432 */
433 .irq = IRQ_GPIO(99),
434 }, { /* ITS400 Sensor board only */
435 .type = "tmp175",
436 .addr = 0x4A,
437 .irq = IRQ_GPIO(96),
438 },
439 };
440
441 static struct i2c_board_info __initdata imote2_pwr_i2c_board_info[] = {
442 {
443 .type = "da9030",
444 .addr = 0x49,
445 .platform_data = &imote2_da9030_pdata,
446 .irq = gpio_to_irq(1),
447 },
448 };
449
450 static struct pxa2xx_spi_master pxa_ssp_master_0_info = {
451 .num_chipselect = 1,
452 };
453
454 static struct pxa2xx_spi_master pxa_ssp_master_1_info = {
455 .num_chipselect = 1,
456 };
457
458 static struct pxa2xx_spi_master pxa_ssp_master_2_info = {
459 .num_chipselect = 1,
460 };
461
462 /* Patch posted by Eric Miao <eric.miao@marvell.com> will remove
463 * the need for these functions.
464 */
spi1control(u32 command)465 static void spi1control(u32 command)
466 {
467 gpio_set_value(24, command & PXA2XX_CS_ASSERT ? 0 : 1);
468 };
469
spi3control(u32 command)470 static void spi3control(u32 command)
471 {
472 gpio_set_value(39, command & PXA2XX_CS_ASSERT ? 0 : 1);
473 };
474
475 static struct pxa2xx_spi_chip staccel_chip_info = {
476 .tx_threshold = 8,
477 .rx_threshold = 8,
478 .dma_burst_size = 8,
479 .timeout = 235,
480 .cs_control = spi1control,
481 };
482
483 static struct pxa2xx_spi_chip cc2420_info = {
484 .tx_threshold = 8,
485 .rx_threshold = 8,
486 .dma_burst_size = 8,
487 .timeout = 235,
488 .cs_control = spi3control,
489 };
490
491 static struct spi_board_info spi_board_info[] __initdata = {
492 { /* Driver in IIO */
493 .modalias = "lis3l02dq",
494 .max_speed_hz = 8000000,/* 8MHz max spi frequency at 3V */
495 .bus_num = 1,
496 .chip_select = 0,
497 .controller_data = &staccel_chip_info,
498 .irq = IRQ_GPIO(96),
499 }, { /* Driver out of kernel as it needs considerable rewriting */
500 .modalias = "cc2420",
501 .max_speed_hz = 6500000,
502 .bus_num = 3,
503 .chip_select = 0,
504 .controller_data = &cc2420_info,
505 },
506 };
507
im2_udc_command(int cmd)508 static void im2_udc_command(int cmd)
509 {
510 switch (cmd) {
511 case PXA2XX_UDC_CMD_CONNECT:
512 UP2OCR |= UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE;
513 break;
514 case PXA2XX_UDC_CMD_DISCONNECT:
515 UP2OCR &= ~(UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE);
516 break;
517 }
518 }
519
520 static struct pxa2xx_udc_mach_info imote2_udc_info __initdata = {
521 .udc_command = im2_udc_command,
522 };
523
524 static struct platform_device *imote2_devices[] = {
525 &imote2_flash_device,
526 &imote2_leds,
527 };
528
529 static struct i2c_pxa_platform_data i2c_pwr_pdata = {
530 .fast_mode = 1,
531 };
532
533 static struct i2c_pxa_platform_data i2c_pdata = {
534 .fast_mode = 1,
535 };
536
imote2_init(void)537 static void __init imote2_init(void)
538 {
539
540 pxa2xx_mfp_config(ARRAY_AND_SIZE(imote2_pin_config));
541 /* SPI chip select directions - all other directions should
542 * be handled by drivers.*/
543 gpio_direction_output(37, 0);
544 gpio_direction_output(24, 0);
545 gpio_direction_output(39, 0);
546
547 platform_add_devices(imote2_devices, ARRAY_SIZE(imote2_devices));
548
549 pxa2xx_set_spi_info(1, &pxa_ssp_master_0_info);
550 pxa2xx_set_spi_info(2, &pxa_ssp_master_1_info);
551 pxa2xx_set_spi_info(3, &pxa_ssp_master_2_info);
552
553 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
554
555 i2c_register_board_info(0, imote2_i2c_board_info,
556 ARRAY_SIZE(imote2_i2c_board_info));
557 i2c_register_board_info(1, imote2_pwr_i2c_board_info,
558 ARRAY_SIZE(imote2_pwr_i2c_board_info));
559
560 pxa27x_set_i2c_power_info(&i2c_pwr_pdata);
561 pxa_set_i2c_info(&i2c_pdata);
562
563 pxa_set_mci_info(&imote2_mci_platform_data);
564 pxa_set_udc_info(&imote2_udc_info);
565 }
566
567 MACHINE_START(INTELMOTE2, "IMOTE 2")
568 .phys_io = 0x40000000,
569 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
570 .map_io = pxa_map_io,
571 .init_irq = pxa27x_init_irq,
572 .timer = &pxa_timer,
573 .init_machine = imote2_init,
574 .boot_params = 0xA0000100,
575 MACHINE_END
576