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b6795fa9 JC |
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 | ||
51c62982 | 31 | #include <mach/pxa27x.h> |
b6795fa9 | 32 | #include <mach/i2c.h> |
b6795fa9 JC |
33 | #include <mach/udc.h> |
34 | #include <mach/mmc.h> | |
35 | #include <mach/pxa2xx_spi.h> | |
36 | #include <mach/pxa27x-udc.h> | |
37 | ||
38 | #include "devices.h" | |
39 | #include "generic.h" | |
40 | ||
41 | static unsigned long imote2_pin_config[] __initdata = { | |
42 | ||
43 | /* Device Identification for wakeup*/ | |
44 | GPIO102_GPIO, | |
45 | ||
46 | /* Button */ | |
47 | GPIO91_GPIO, | |
48 | ||
49 | /* DA9030 */ | |
50 | GPIO1_GPIO, | |
51 | ||
52 | /* MMC */ | |
53 | GPIO32_MMC_CLK, | |
54 | GPIO112_MMC_CMD, | |
55 | GPIO92_MMC_DAT_0, | |
56 | GPIO109_MMC_DAT_1, | |
57 | GPIO110_MMC_DAT_2, | |
58 | GPIO111_MMC_DAT_3, | |
59 | ||
60 | /* 802.15.4 radio - driver out of mainline */ | |
61 | GPIO22_GPIO, /* CC_RSTN */ | |
62 | GPIO114_GPIO, /* CC_FIFO */ | |
63 | GPIO116_GPIO, /* CC_CCA */ | |
64 | GPIO0_GPIO, /* CC_FIFOP */ | |
65 | GPIO16_GPIO, /* CCSFD */ | |
66 | GPIO39_GPIO, /* CSn */ | |
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 | /* Connector pins specified as gpios */ | |
106 | GPIO94_GPIO, /* large basic connector pin 14 */ | |
107 | GPIO10_GPIO, /* large basic connector pin 23 */ | |
108 | ||
109 | /* LEDS */ | |
110 | GPIO103_GPIO, /* red led */ | |
111 | GPIO104_GPIO, /* green led */ | |
112 | GPIO105_GPIO, /* blue led */ | |
113 | }; | |
114 | ||
115 | static struct gpio_led imote2_led_pins[] = { | |
116 | { | |
117 | .name = "imote2:red", | |
118 | .gpio = 103, | |
119 | .active_low = 1, | |
120 | }, { | |
121 | .name = "imote2:green", | |
122 | .gpio = 104, | |
123 | .active_low = 1, | |
124 | }, { | |
125 | .name = "imote2:blue", | |
126 | .gpio = 105, | |
127 | .active_low = 1, | |
128 | }, | |
129 | }; | |
130 | ||
131 | static struct gpio_led_platform_data imote2_led_data = { | |
132 | .num_leds = ARRAY_SIZE(imote2_led_pins), | |
133 | .leds = imote2_led_pins, | |
134 | }; | |
135 | ||
136 | static struct platform_device imote2_leds = { | |
137 | .name = "leds-gpio", | |
138 | .id = -1, | |
139 | .dev = { | |
140 | .platform_data = &imote2_led_data, | |
141 | }, | |
142 | }; | |
143 | ||
144 | /* Reverse engineered partly from Platformx drivers */ | |
145 | enum imote2_ldos{ | |
146 | vcc_vref, | |
147 | vcc_cc2420, | |
148 | vcc_mica, | |
149 | vcc_bt, | |
150 | /* The two voltages available to sensor boards */ | |
151 | vcc_sensor_1_8, | |
152 | vcc_sensor_3, | |
153 | ||
154 | vcc_sram_ext, /* directly connected to the pxa271 */ | |
155 | vcc_pxa_pll, | |
156 | vcc_pxa_usim, /* Reference voltage for certain gpios */ | |
157 | vcc_pxa_mem, | |
158 | vcc_pxa_flash, | |
159 | vcc_pxa_core, /*Dc-Dc buck not yet supported */ | |
160 | vcc_lcd, | |
161 | vcc_bb, | |
162 | vcc_bbio, | |
163 | vcc_io, /* cc2420 802.15.4 radio and pxa vcc_io ?*/ | |
164 | }; | |
165 | ||
166 | /* The values of the various regulator constraints are obviously dependent | |
167 | * on exactly what is wired to each ldo. Unfortunately this information is | |
168 | * not generally available. More information has been requested from Xbow | |
169 | * but as of yet they haven't been forthcoming. | |
170 | * | |
171 | * Some of these are clearly Stargate 2 related (no way of plugging | |
172 | * in an lcd on the IM2 for example!). | |
173 | */ | |
174 | static struct regulator_init_data imote2_ldo_init_data[] = { | |
175 | [vcc_bbio] = { | |
176 | .constraints = { /* board default 1.8V */ | |
177 | .name = "vcc_bbio", | |
178 | .min_uV = 1800000, | |
179 | .max_uV = 1800000, | |
180 | }, | |
181 | }, | |
182 | [vcc_bb] = { | |
183 | .constraints = { /* board default 2.8V */ | |
184 | .name = "vcc_bb", | |
185 | .min_uV = 2700000, | |
186 | .max_uV = 3000000, | |
187 | }, | |
188 | }, | |
189 | [vcc_pxa_flash] = { | |
190 | .constraints = {/* default is 1.8V */ | |
191 | .name = "vcc_pxa_flash", | |
192 | .min_uV = 1800000, | |
193 | .max_uV = 1800000, | |
194 | }, | |
195 | }, | |
196 | [vcc_cc2420] = { /* also vcc_io */ | |
197 | .constraints = { | |
198 | /* board default is 2.8V */ | |
199 | .name = "vcc_cc2420", | |
200 | .min_uV = 2700000, | |
201 | .max_uV = 3300000, | |
202 | }, | |
203 | }, | |
204 | [vcc_vref] = { /* Reference for what? */ | |
205 | .constraints = { /* default 1.8V */ | |
206 | .name = "vcc_vref", | |
207 | .min_uV = 1800000, | |
208 | .max_uV = 1800000, | |
209 | }, | |
210 | }, | |
211 | [vcc_sram_ext] = { | |
212 | .constraints = { /* default 2.8V */ | |
213 | .name = "vcc_sram_ext", | |
214 | .min_uV = 2800000, | |
215 | .max_uV = 2800000, | |
216 | }, | |
217 | }, | |
218 | [vcc_mica] = { | |
219 | .constraints = { /* default 2.8V */ | |
220 | .name = "vcc_mica", | |
221 | .min_uV = 2800000, | |
222 | .max_uV = 2800000, | |
223 | }, | |
224 | }, | |
225 | [vcc_bt] = { | |
226 | .constraints = { /* default 2.8V */ | |
227 | .name = "vcc_bt", | |
228 | .min_uV = 2800000, | |
229 | .max_uV = 2800000, | |
230 | }, | |
231 | }, | |
232 | [vcc_lcd] = { | |
233 | .constraints = { /* default 2.8V */ | |
234 | .name = "vcc_lcd", | |
235 | .min_uV = 2700000, | |
236 | .max_uV = 3300000, | |
237 | }, | |
238 | }, | |
239 | [vcc_io] = { /* Same or higher than everything | |
240 | * bar vccbat and vccusb */ | |
241 | .constraints = { /* default 2.8V */ | |
242 | .name = "vcc_io", | |
243 | .min_uV = 2692000, | |
244 | .max_uV = 3300000, | |
245 | }, | |
246 | }, | |
247 | [vcc_sensor_1_8] = { | |
248 | .constraints = { /* default 1.8V */ | |
249 | .name = "vcc_sensor_1_8", | |
250 | .min_uV = 1800000, | |
251 | .max_uV = 1800000, | |
252 | }, | |
253 | }, | |
254 | [vcc_sensor_3] = { /* curiously default 2.8V */ | |
255 | .constraints = { | |
256 | .name = "vcc_sensor_3", | |
257 | .min_uV = 2800000, | |
258 | .max_uV = 3000000, | |
259 | }, | |
260 | }, | |
261 | [vcc_pxa_pll] = { /* 1.17V - 1.43V, default 1.3V*/ | |
262 | .constraints = { | |
263 | .name = "vcc_pxa_pll", | |
264 | .min_uV = 1170000, | |
265 | .max_uV = 1430000, | |
266 | }, | |
267 | }, | |
268 | [vcc_pxa_usim] = { | |
269 | .constraints = { /* default 1.8V */ | |
270 | .name = "vcc_pxa_usim", | |
271 | .min_uV = 1710000, | |
272 | .max_uV = 2160000, | |
273 | }, | |
274 | }, | |
275 | [vcc_pxa_mem] = { | |
276 | .constraints = { /* default 1.8V */ | |
277 | .name = "vcc_pxa_mem", | |
278 | .min_uV = 1800000, | |
279 | .max_uV = 1800000, | |
280 | }, | |
281 | }, | |
282 | }; | |
283 | ||
284 | static struct da903x_subdev_info imote2_da9030_subdevs[] = { | |
285 | { | |
286 | .name = "da903x-regulator", | |
287 | .id = DA9030_ID_LDO2, | |
288 | .platform_data = &imote2_ldo_init_data[vcc_bbio], | |
289 | }, { | |
290 | .name = "da903x-regulator", | |
291 | .id = DA9030_ID_LDO3, | |
292 | .platform_data = &imote2_ldo_init_data[vcc_bb], | |
293 | }, { | |
294 | .name = "da903x-regulator", | |
295 | .id = DA9030_ID_LDO4, | |
296 | .platform_data = &imote2_ldo_init_data[vcc_pxa_flash], | |
297 | }, { | |
298 | .name = "da903x-regulator", | |
299 | .id = DA9030_ID_LDO5, | |
300 | .platform_data = &imote2_ldo_init_data[vcc_cc2420], | |
301 | }, { | |
302 | .name = "da903x-regulator", | |
303 | .id = DA9030_ID_LDO6, | |
304 | .platform_data = &imote2_ldo_init_data[vcc_vref], | |
305 | }, { | |
306 | .name = "da903x-regulator", | |
307 | .id = DA9030_ID_LDO7, | |
308 | .platform_data = &imote2_ldo_init_data[vcc_sram_ext], | |
309 | }, { | |
310 | .name = "da903x-regulator", | |
311 | .id = DA9030_ID_LDO8, | |
312 | .platform_data = &imote2_ldo_init_data[vcc_mica], | |
313 | }, { | |
314 | .name = "da903x-regulator", | |
315 | .id = DA9030_ID_LDO9, | |
316 | .platform_data = &imote2_ldo_init_data[vcc_bt], | |
317 | }, { | |
318 | .name = "da903x-regulator", | |
319 | .id = DA9030_ID_LDO10, | |
320 | .platform_data = &imote2_ldo_init_data[vcc_sensor_1_8], | |
321 | }, { | |
322 | .name = "da903x-regulator", | |
323 | .id = DA9030_ID_LDO11, | |
324 | .platform_data = &imote2_ldo_init_data[vcc_sensor_3], | |
325 | }, { | |
326 | .name = "da903x-regulator", | |
327 | .id = DA9030_ID_LDO12, | |
328 | .platform_data = &imote2_ldo_init_data[vcc_lcd], | |
329 | }, { | |
330 | .name = "da903x-regulator", | |
331 | .id = DA9030_ID_LDO15, | |
332 | .platform_data = &imote2_ldo_init_data[vcc_pxa_pll], | |
333 | }, { | |
334 | .name = "da903x-regulator", | |
335 | .id = DA9030_ID_LDO17, | |
336 | .platform_data = &imote2_ldo_init_data[vcc_pxa_usim], | |
337 | }, { | |
338 | .name = "da903x-regulator", | |
339 | .id = DA9030_ID_LDO18, | |
340 | .platform_data = &imote2_ldo_init_data[vcc_io], | |
341 | }, { | |
342 | .name = "da903x-regulator", | |
343 | .id = DA9030_ID_LDO19, | |
344 | .platform_data = &imote2_ldo_init_data[vcc_pxa_mem], | |
345 | }, | |
346 | }; | |
347 | ||
348 | static struct da903x_platform_data imote2_da9030_pdata = { | |
349 | .num_subdevs = ARRAY_SIZE(imote2_da9030_subdevs), | |
350 | .subdevs = imote2_da9030_subdevs, | |
351 | }; | |
352 | ||
353 | /* As the the imote2 doesn't currently have a conventional SD slot | |
354 | * there is no option to hotplug cards, making all this rather simple | |
355 | */ | |
356 | static int imote2_mci_get_ro(struct device *dev) | |
357 | { | |
358 | return 0; | |
359 | } | |
360 | ||
361 | /* Rather simple case as hotplugging not possible */ | |
362 | static struct pxamci_platform_data imote2_mci_platform_data = { | |
363 | .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, /* default anyway */ | |
364 | .get_ro = imote2_mci_get_ro, | |
365 | }; | |
366 | ||
367 | static struct mtd_partition imote2flash_partitions[] = { | |
368 | { | |
369 | .name = "Bootloader", | |
370 | .size = 0x00040000, | |
371 | .offset = 0, | |
372 | .mask_flags = MTD_WRITEABLE, | |
373 | }, { | |
374 | .name = "Kernel", | |
375 | .size = 0x00200000, | |
376 | .offset = 0x00040000, | |
377 | .mask_flags = 0, | |
378 | }, { | |
379 | .name = "Filesystem", | |
380 | .size = 0x01DC0000, | |
381 | .offset = 0x00240000, | |
382 | .mask_flags = 0, | |
383 | }, | |
384 | }; | |
385 | ||
386 | static struct resource flash_resources = { | |
387 | .start = PXA_CS0_PHYS, | |
388 | .end = PXA_CS0_PHYS + SZ_32M - 1, | |
389 | .flags = IORESOURCE_MEM, | |
390 | }; | |
391 | ||
392 | static struct flash_platform_data imote2_flash_data = { | |
393 | .map_name = "cfi_probe", | |
394 | .parts = imote2flash_partitions, | |
395 | .nr_parts = ARRAY_SIZE(imote2flash_partitions), | |
396 | .name = "PXA27xOnChipROM", | |
397 | .width = 2, | |
398 | }; | |
399 | ||
400 | static struct platform_device imote2_flash_device = { | |
401 | .name = "pxa2xx-flash", | |
402 | .id = 0, | |
403 | .dev = { | |
404 | .platform_data = &imote2_flash_data, | |
405 | }, | |
406 | .resource = &flash_resources, | |
407 | .num_resources = 1, | |
408 | }; | |
409 | ||
410 | /* Some of the drivers here are out of kernel at the moment (parts of IIO) | |
411 | * and it may be a while before they are in the mainline. | |
412 | */ | |
413 | static struct i2c_board_info __initdata imote2_i2c_board_info[] = { | |
414 | { /* UCAM sensor board */ | |
d81e77f0 | 415 | .type = "max1239", |
b6795fa9 JC |
416 | .addr = 0x35, |
417 | }, { /* ITS400 Sensor board only */ | |
418 | .type = "max1363", | |
419 | .addr = 0x34, | |
420 | /* Through a nand gate - Also beware, on V2 sensor board the | |
421 | * pull up resistors are missing. | |
422 | */ | |
423 | .irq = IRQ_GPIO(99), | |
424 | }, { /* ITS400 Sensor board only */ | |
425 | .type = "tsl2561", | |
426 | .addr = 0x49, | |
427 | /* Through a nand gate - Also beware, on V2 sensor board the | |
428 | * pull up resistors are missing. | |
429 | */ | |
430 | .irq = IRQ_GPIO(99), | |
431 | }, { /* ITS400 Sensor board only */ | |
432 | .type = "tmp175", | |
433 | .addr = 0x4A, | |
434 | .irq = IRQ_GPIO(96), | |
435 | }, | |
436 | }; | |
437 | ||
438 | static struct i2c_board_info __initdata imote2_pwr_i2c_board_info[] = { | |
439 | { | |
440 | .type = "da9030", | |
441 | .addr = 0x49, | |
442 | .platform_data = &imote2_da9030_pdata, | |
443 | .irq = gpio_to_irq(1), | |
444 | }, | |
445 | }; | |
446 | ||
447 | static struct pxa2xx_spi_master pxa_ssp_master_0_info = { | |
448 | .num_chipselect = 1, | |
449 | }; | |
450 | ||
451 | static struct pxa2xx_spi_master pxa_ssp_master_1_info = { | |
452 | .num_chipselect = 1, | |
453 | }; | |
454 | ||
455 | static struct pxa2xx_spi_master pxa_ssp_master_2_info = { | |
456 | .num_chipselect = 1, | |
457 | }; | |
458 | ||
459 | /* Patch posted by Eric Miao <eric.miao@marvell.com> will remove | |
460 | * the need for these functions. | |
461 | */ | |
462 | static void spi1control(u32 command) | |
463 | { | |
464 | gpio_set_value(24, command & PXA2XX_CS_ASSERT ? 0 : 1); | |
465 | }; | |
466 | ||
467 | static void spi3control(u32 command) | |
468 | { | |
469 | gpio_set_value(39, command & PXA2XX_CS_ASSERT ? 0 : 1); | |
470 | }; | |
471 | ||
472 | static struct pxa2xx_spi_chip staccel_chip_info = { | |
473 | .tx_threshold = 8, | |
474 | .rx_threshold = 8, | |
475 | .dma_burst_size = 8, | |
476 | .timeout = 235, | |
477 | .cs_control = spi1control, | |
478 | }; | |
479 | ||
480 | static struct pxa2xx_spi_chip cc2420_info = { | |
481 | .tx_threshold = 8, | |
482 | .rx_threshold = 8, | |
483 | .dma_burst_size = 8, | |
484 | .timeout = 235, | |
485 | .cs_control = spi3control, | |
486 | }; | |
487 | ||
488 | static struct spi_board_info spi_board_info[] __initdata = { | |
489 | { /* Driver in IIO */ | |
490 | .modalias = "lis3l02dq", | |
491 | .max_speed_hz = 8000000,/* 8MHz max spi frequency at 3V */ | |
492 | .bus_num = 1, | |
493 | .chip_select = 0, | |
494 | .controller_data = &staccel_chip_info, | |
495 | .irq = IRQ_GPIO(96), | |
496 | }, { /* Driver out of kernel as it needs considerable rewriting */ | |
497 | .modalias = "cc2420", | |
498 | .max_speed_hz = 6500000, | |
499 | .bus_num = 3, | |
500 | .chip_select = 0, | |
501 | .controller_data = &cc2420_info, | |
502 | }, | |
503 | }; | |
504 | ||
505 | static void im2_udc_command(int cmd) | |
506 | { | |
507 | switch (cmd) { | |
508 | case PXA2XX_UDC_CMD_CONNECT: | |
509 | UP2OCR |= UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE; | |
510 | break; | |
511 | case PXA2XX_UDC_CMD_DISCONNECT: | |
512 | UP2OCR &= ~(UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE); | |
513 | break; | |
514 | } | |
515 | } | |
516 | ||
517 | static struct pxa2xx_udc_mach_info imote2_udc_info __initdata = { | |
518 | .udc_command = im2_udc_command, | |
519 | }; | |
520 | ||
521 | static struct platform_device *imote2_devices[] = { | |
522 | &imote2_flash_device, | |
523 | &imote2_leds, | |
524 | }; | |
525 | ||
526 | static struct i2c_pxa_platform_data i2c_pwr_pdata = { | |
527 | .fast_mode = 1, | |
528 | }; | |
529 | ||
530 | static struct i2c_pxa_platform_data i2c_pdata = { | |
531 | .fast_mode = 1, | |
532 | }; | |
533 | ||
534 | static void __init imote2_init(void) | |
535 | { | |
536 | ||
537 | pxa2xx_mfp_config(ARRAY_AND_SIZE(imote2_pin_config)); | |
538 | /* SPI chip select directions - all other directions should | |
539 | * be handled by drivers.*/ | |
540 | gpio_direction_output(37, 0); | |
541 | gpio_direction_output(24, 0); | |
542 | gpio_direction_output(39, 0); | |
543 | ||
544 | platform_add_devices(imote2_devices, ARRAY_SIZE(imote2_devices)); | |
545 | ||
546 | pxa2xx_set_spi_info(1, &pxa_ssp_master_0_info); | |
547 | pxa2xx_set_spi_info(2, &pxa_ssp_master_1_info); | |
548 | pxa2xx_set_spi_info(3, &pxa_ssp_master_2_info); | |
549 | ||
550 | spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info)); | |
551 | ||
552 | i2c_register_board_info(0, imote2_i2c_board_info, | |
553 | ARRAY_SIZE(imote2_i2c_board_info)); | |
554 | i2c_register_board_info(1, imote2_pwr_i2c_board_info, | |
555 | ARRAY_SIZE(imote2_pwr_i2c_board_info)); | |
556 | ||
557 | pxa27x_set_i2c_power_info(&i2c_pwr_pdata); | |
558 | pxa_set_i2c_info(&i2c_pdata); | |
559 | ||
560 | pxa_set_mci_info(&imote2_mci_platform_data); | |
561 | pxa_set_udc_info(&imote2_udc_info); | |
562 | } | |
563 | ||
564 | MACHINE_START(INTELMOTE2, "IMOTE 2") | |
565 | .phys_io = 0x40000000, | |
566 | .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc, | |
567 | .map_io = pxa_map_io, | |
568 | .init_irq = pxa27x_init_irq, | |
569 | .timer = &pxa_timer, | |
570 | .init_machine = imote2_init, | |
571 | .boot_params = 0xA0000100, | |
572 | MACHINE_END |