Merge branch 'for-2.6.30' into for-2.6.31
[linux-2.6] / arch / arm / mach-pxa / imote2.c
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/pxa27x.h>
32 #include <mach/i2c.h>
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 */
415                 .type = "max1238",
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