1 /*
2 * linux/arch/arm/mach-pxa/lubbock.c
3 *
4 * Support for the Intel DBPXA250 Development Platform.
5 *
6 * Author: Nicolas Pitre
7 * Created: Jun 15, 2001
8 * Copyright: MontaVista Software Inc.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14 #include <linux/gpio.h>
15 #include <linux/gpio/machine.h>
16 #include <linux/module.h>
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19 #include <linux/io.h>
20 #include <linux/platform_device.h>
21 #include <linux/syscore_ops.h>
22 #include <linux/major.h>
23 #include <linux/fb.h>
24 #include <linux/interrupt.h>
25 #include <linux/mtd/mtd.h>
26 #include <linux/mtd/partitions.h>
27 #include <linux/smc91x.h>
28 #include <linux/slab.h>
29 #include <linux/leds.h>
30
31 #include <linux/spi/spi.h>
32 #include <linux/spi/ads7846.h>
33 #include <linux/spi/pxa2xx_spi.h>
34
35 #include <asm/setup.h>
36 #include <asm/memory.h>
37 #include <asm/mach-types.h>
38 #include <mach/hardware.h>
39 #include <asm/irq.h>
40 #include <asm/sizes.h>
41
42 #include <asm/mach/arch.h>
43 #include <asm/mach/map.h>
44 #include <asm/mach/irq.h>
45 #include <asm/mach/flash.h>
46
47 #include <asm/hardware/sa1111.h>
48
49 #include <mach/pxa25x.h>
50 #include <mach/audio.h>
51 #include <mach/lubbock.h>
52 #include <mach/udc.h>
53 #include <linux/platform_data/irda-pxaficp.h>
54 #include <linux/platform_data/video-pxafb.h>
55 #include <linux/platform_data/mmc-pxamci.h>
56 #include <mach/pm.h>
57 #include <mach/smemc.h>
58
59 #include "generic.h"
60 #include "clock.h"
61 #include "devices.h"
62
63 static unsigned long lubbock_pin_config[] __initdata = {
64 GPIO15_nCS_1, /* CS1 - Flash */
65 GPIO78_nCS_2, /* CS2 - Baseboard FGPA */
66 GPIO79_nCS_3, /* CS3 - SMC ethernet */
67 GPIO80_nCS_4, /* CS4 - SA1111 */
68
69 /* SSP data pins */
70 GPIO23_SSP1_SCLK,
71 GPIO25_SSP1_TXD,
72 GPIO26_SSP1_RXD,
73
74 /* AC97 */
75 GPIO28_AC97_BITCLK,
76 GPIO29_AC97_SDATA_IN_0,
77 GPIO30_AC97_SDATA_OUT,
78 GPIO31_AC97_SYNC,
79
80 /* LCD - 16bpp DSTN */
81 GPIOxx_LCD_DSTN_16BPP,
82
83 /* BTUART */
84 GPIO42_BTUART_RXD,
85 GPIO43_BTUART_TXD,
86 GPIO44_BTUART_CTS,
87 GPIO45_BTUART_RTS,
88
89 /* PC Card */
90 GPIO48_nPOE,
91 GPIO49_nPWE,
92 GPIO50_nPIOR,
93 GPIO51_nPIOW,
94 GPIO52_nPCE_1,
95 GPIO53_nPCE_2,
96 GPIO54_nPSKTSEL,
97 GPIO55_nPREG,
98 GPIO56_nPWAIT,
99 GPIO57_nIOIS16,
100
101 /* MMC */
102 GPIO6_MMC_CLK,
103 GPIO8_MMC_CS0,
104
105 /* wakeup */
106 GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
107 };
108
109 #define LUB_HEXLED __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
110 #define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
111
lubbock_set_hexled(uint32_t value)112 void lubbock_set_hexled(uint32_t value)
113 {
114 LUB_HEXLED = value;
115 }
116
lubbock_set_misc_wr(unsigned int mask,unsigned int set)117 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
118 {
119 unsigned long flags;
120
121 local_irq_save(flags);
122 LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
123 local_irq_restore(flags);
124 }
125 EXPORT_SYMBOL(lubbock_set_misc_wr);
126
lubbock_udc_is_connected(void)127 static int lubbock_udc_is_connected(void)
128 {
129 return (LUB_MISC_RD & (1 << 9)) == 0;
130 }
131
132 static struct pxa2xx_udc_mach_info udc_info __initdata = {
133 .udc_is_connected = lubbock_udc_is_connected,
134 // no D+ pullup; lubbock can't connect/disconnect in software
135 };
136
137 static struct resource sa1111_resources[] = {
138 [0] = {
139 .start = 0x10000000,
140 .end = 0x10001fff,
141 .flags = IORESOURCE_MEM,
142 },
143 [1] = {
144 .start = LUBBOCK_SA1111_IRQ,
145 .end = LUBBOCK_SA1111_IRQ,
146 .flags = IORESOURCE_IRQ,
147 },
148 };
149
150 static struct sa1111_platform_data sa1111_info = {
151 .irq_base = LUBBOCK_SA1111_IRQ_BASE,
152 .disable_devs = SA1111_DEVID_SAC,
153 };
154
155 static struct platform_device sa1111_device = {
156 .name = "sa1111",
157 .id = -1,
158 .num_resources = ARRAY_SIZE(sa1111_resources),
159 .resource = sa1111_resources,
160 .dev = {
161 .platform_data = &sa1111_info,
162 },
163 };
164
165 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
166 * you can select it to replace the ucb1400 by switching the touchscreen cable
167 * (to J5) and poking board registers (as done below). Else it's only useful
168 * for the temperature sensors.
169 */
170 static struct pxa2xx_spi_master pxa_ssp_master_info = {
171 .num_chipselect = 1,
172 };
173
lubbock_ads7846_pendown_state(void)174 static int lubbock_ads7846_pendown_state(void)
175 {
176 /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
177 return 0;
178 }
179
180 static struct ads7846_platform_data ads_info = {
181 .model = 7846,
182 .vref_delay_usecs = 100, /* internal, no cap */
183 .get_pendown_state = lubbock_ads7846_pendown_state,
184 // .x_plate_ohms = 500, /* GUESS! */
185 // .y_plate_ohms = 500, /* GUESS! */
186 };
187
ads7846_cs(u32 command)188 static void ads7846_cs(u32 command)
189 {
190 static const unsigned TS_nCS = 1 << 11;
191 lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
192 }
193
194 static struct pxa2xx_spi_chip ads_hw = {
195 .tx_threshold = 1,
196 .rx_threshold = 2,
197 .cs_control = ads7846_cs,
198 };
199
200 static struct spi_board_info spi_board_info[] __initdata = { {
201 .modalias = "ads7846",
202 .platform_data = &ads_info,
203 .controller_data = &ads_hw,
204 .irq = LUBBOCK_BB_IRQ,
205 .max_speed_hz = 120000 /* max sample rate at 3V */
206 * 26 /* command + data + overhead */,
207 .bus_num = 1,
208 .chip_select = 0,
209 },
210 };
211
212 static struct resource smc91x_resources[] = {
213 [0] = {
214 .name = "smc91x-regs",
215 .start = 0x0c000c00,
216 .end = 0x0c0fffff,
217 .flags = IORESOURCE_MEM,
218 },
219 [1] = {
220 .start = LUBBOCK_ETH_IRQ,
221 .end = LUBBOCK_ETH_IRQ,
222 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
223 },
224 [2] = {
225 .name = "smc91x-attrib",
226 .start = 0x0e000000,
227 .end = 0x0e0fffff,
228 .flags = IORESOURCE_MEM,
229 },
230 };
231
232 static struct smc91x_platdata lubbock_smc91x_info = {
233 .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
234 };
235
236 static struct platform_device smc91x_device = {
237 .name = "smc91x",
238 .id = -1,
239 .num_resources = ARRAY_SIZE(smc91x_resources),
240 .resource = smc91x_resources,
241 .dev = {
242 .platform_data = &lubbock_smc91x_info,
243 },
244 };
245
246 static struct resource flash_resources[] = {
247 [0] = {
248 .start = 0x00000000,
249 .end = SZ_64M - 1,
250 .flags = IORESOURCE_MEM,
251 },
252 [1] = {
253 .start = 0x04000000,
254 .end = 0x04000000 + SZ_64M - 1,
255 .flags = IORESOURCE_MEM,
256 },
257 };
258
259 static struct mtd_partition lubbock_partitions[] = {
260 {
261 .name = "Bootloader",
262 .size = 0x00040000,
263 .offset = 0,
264 .mask_flags = MTD_WRITEABLE /* force read-only */
265 },{
266 .name = "Kernel",
267 .size = 0x00100000,
268 .offset = 0x00040000,
269 },{
270 .name = "Filesystem",
271 .size = MTDPART_SIZ_FULL,
272 .offset = 0x00140000
273 }
274 };
275
276 static struct flash_platform_data lubbock_flash_data[2] = {
277 {
278 .map_name = "cfi_probe",
279 .parts = lubbock_partitions,
280 .nr_parts = ARRAY_SIZE(lubbock_partitions),
281 }, {
282 .map_name = "cfi_probe",
283 .parts = NULL,
284 .nr_parts = 0,
285 }
286 };
287
288 static struct platform_device lubbock_flash_device[2] = {
289 {
290 .name = "pxa2xx-flash",
291 .id = 0,
292 .dev = {
293 .platform_data = &lubbock_flash_data[0],
294 },
295 .resource = &flash_resources[0],
296 .num_resources = 1,
297 },
298 {
299 .name = "pxa2xx-flash",
300 .id = 1,
301 .dev = {
302 .platform_data = &lubbock_flash_data[1],
303 },
304 .resource = &flash_resources[1],
305 .num_resources = 1,
306 },
307 };
308
309 static struct resource lubbock_cplds_resources[] = {
310 [0] = {
311 .start = LUBBOCK_FPGA_PHYS + 0xc0,
312 .end = LUBBOCK_FPGA_PHYS + 0xe0 - 1,
313 .flags = IORESOURCE_MEM,
314 },
315 [1] = {
316 .start = PXA_GPIO_TO_IRQ(0),
317 .end = PXA_GPIO_TO_IRQ(0),
318 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
319 },
320 [2] = {
321 .start = LUBBOCK_IRQ(0),
322 .end = LUBBOCK_IRQ(6),
323 .flags = IORESOURCE_IRQ,
324 },
325 };
326
327 static struct platform_device lubbock_cplds_device = {
328 .name = "pxa_cplds_irqs",
329 .id = -1,
330 .resource = &lubbock_cplds_resources[0],
331 .num_resources = 3,
332 };
333
334
335 static struct platform_device *devices[] __initdata = {
336 &sa1111_device,
337 &smc91x_device,
338 &lubbock_flash_device[0],
339 &lubbock_flash_device[1],
340 &lubbock_cplds_device,
341 };
342
343 static struct pxafb_mode_info sharp_lm8v31_mode = {
344 .pixclock = 270000,
345 .xres = 640,
346 .yres = 480,
347 .bpp = 16,
348 .hsync_len = 1,
349 .left_margin = 3,
350 .right_margin = 3,
351 .vsync_len = 1,
352 .upper_margin = 0,
353 .lower_margin = 0,
354 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
355 .cmap_greyscale = 0,
356 };
357
358 static struct pxafb_mach_info sharp_lm8v31 = {
359 .modes = &sharp_lm8v31_mode,
360 .num_modes = 1,
361 .cmap_inverse = 0,
362 .cmap_static = 0,
363 .lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
364 LCD_AC_BIAS_FREQ(255),
365 };
366
367 #define MMC_POLL_RATE msecs_to_jiffies(1000)
368
369 static void lubbock_mmc_poll(unsigned long);
370 static irq_handler_t mmc_detect_int;
371
372 static struct timer_list mmc_timer = {
373 .function = lubbock_mmc_poll,
374 };
375
lubbock_mmc_poll(unsigned long data)376 static void lubbock_mmc_poll(unsigned long data)
377 {
378 unsigned long flags;
379
380 /* clear any previous irq state, then ... */
381 local_irq_save(flags);
382 LUB_IRQ_SET_CLR &= ~(1 << 0);
383 local_irq_restore(flags);
384
385 /* poll until mmc/sd card is removed */
386 if (LUB_IRQ_SET_CLR & (1 << 0))
387 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
388 else {
389 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
390 enable_irq(LUBBOCK_SD_IRQ);
391 }
392 }
393
lubbock_detect_int(int irq,void * data)394 static irqreturn_t lubbock_detect_int(int irq, void *data)
395 {
396 /* IRQ is level triggered; disable, and poll for removal */
397 disable_irq(irq);
398 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
399
400 return mmc_detect_int(irq, data);
401 }
402
lubbock_mci_init(struct device * dev,irq_handler_t detect_int,void * data)403 static int lubbock_mci_init(struct device *dev,
404 irq_handler_t detect_int,
405 void *data)
406 {
407 /* detect card insert/eject */
408 mmc_detect_int = detect_int;
409 init_timer(&mmc_timer);
410 mmc_timer.data = (unsigned long) data;
411 return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
412 0, "lubbock-sd-detect", data);
413 }
414
lubbock_mci_get_ro(struct device * dev)415 static int lubbock_mci_get_ro(struct device *dev)
416 {
417 return (LUB_MISC_RD & (1 << 2)) != 0;
418 }
419
lubbock_mci_exit(struct device * dev,void * data)420 static void lubbock_mci_exit(struct device *dev, void *data)
421 {
422 free_irq(LUBBOCK_SD_IRQ, data);
423 del_timer_sync(&mmc_timer);
424 }
425
426 static struct pxamci_platform_data lubbock_mci_platform_data = {
427 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
428 .detect_delay_ms = 10,
429 .init = lubbock_mci_init,
430 .get_ro = lubbock_mci_get_ro,
431 .exit = lubbock_mci_exit,
432 .gpio_card_detect = -1,
433 .gpio_card_ro = -1,
434 .gpio_power = -1,
435 };
436
lubbock_irda_transceiver_mode(struct device * dev,int mode)437 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
438 {
439 unsigned long flags;
440
441 local_irq_save(flags);
442 if (mode & IR_SIRMODE) {
443 LUB_MISC_WR &= ~(1 << 4);
444 } else if (mode & IR_FIRMODE) {
445 LUB_MISC_WR |= 1 << 4;
446 }
447 pxa2xx_transceiver_mode(dev, mode);
448 local_irq_restore(flags);
449 }
450
451 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
452 .gpio_pwdown = -1,
453 .transceiver_cap = IR_SIRMODE | IR_FIRMODE,
454 .transceiver_mode = lubbock_irda_transceiver_mode,
455 };
456
lubbock_init(void)457 static void __init lubbock_init(void)
458 {
459 int flashboot = (LUB_CONF_SWITCHES & 1);
460
461 pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
462
463 pxa_set_ffuart_info(NULL);
464 pxa_set_btuart_info(NULL);
465 pxa_set_stuart_info(NULL);
466
467 clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
468 pxa_set_udc_info(&udc_info);
469 pxa_set_fb_info(NULL, &sharp_lm8v31);
470 pxa_set_mci_info(&lubbock_mci_platform_data);
471 pxa_set_ficp_info(&lubbock_ficp_platform_data);
472 pxa_set_ac97_info(NULL);
473
474 lubbock_flash_data[0].width = lubbock_flash_data[1].width =
475 (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
476 /* Compensate for the nROMBT switch which swaps the flash banks */
477 printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
478 flashboot?"Flash":"ROM", flashboot);
479
480 lubbock_flash_data[flashboot^1].name = "application-flash";
481 lubbock_flash_data[flashboot].name = "boot-rom";
482 (void) platform_add_devices(devices, ARRAY_SIZE(devices));
483
484 pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
485 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
486 }
487
488 static struct map_desc lubbock_io_desc[] __initdata = {
489 { /* CPLD */
490 .virtual = LUBBOCK_FPGA_VIRT,
491 .pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
492 .length = 0x00100000,
493 .type = MT_DEVICE
494 }
495 };
496
lubbock_map_io(void)497 static void __init lubbock_map_io(void)
498 {
499 pxa25x_map_io();
500 iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
501
502 PCFR |= PCFR_OPDE;
503 }
504
505 /*
506 * Driver for the 8 discrete LEDs available for general use:
507 * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
508 * so be sure to not monkey with them here.
509 */
510
511 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
512 struct lubbock_led {
513 struct led_classdev cdev;
514 u8 mask;
515 };
516
517 /*
518 * The triggers lines up below will only be used if the
519 * LED triggers are compiled in.
520 */
521 static const struct {
522 const char *name;
523 const char *trigger;
524 } lubbock_leds[] = {
525 { "lubbock:D28", "default-on", },
526 { "lubbock:D27", "cpu0", },
527 { "lubbock:D26", "heartbeat" },
528 { "lubbock:D25", },
529 { "lubbock:D24", },
530 { "lubbock:D23", },
531 { "lubbock:D22", },
532 { "lubbock:D21", },
533 };
534
lubbock_led_set(struct led_classdev * cdev,enum led_brightness b)535 static void lubbock_led_set(struct led_classdev *cdev,
536 enum led_brightness b)
537 {
538 struct lubbock_led *led = container_of(cdev,
539 struct lubbock_led, cdev);
540 u32 reg = LUB_DISC_BLNK_LED;
541
542 if (b != LED_OFF)
543 reg |= led->mask;
544 else
545 reg &= ~led->mask;
546
547 LUB_DISC_BLNK_LED = reg;
548 }
549
lubbock_led_get(struct led_classdev * cdev)550 static enum led_brightness lubbock_led_get(struct led_classdev *cdev)
551 {
552 struct lubbock_led *led = container_of(cdev,
553 struct lubbock_led, cdev);
554 u32 reg = LUB_DISC_BLNK_LED;
555
556 return (reg & led->mask) ? LED_FULL : LED_OFF;
557 }
558
lubbock_leds_init(void)559 static int __init lubbock_leds_init(void)
560 {
561 int i;
562
563 if (!machine_is_lubbock())
564 return -ENODEV;
565
566 /* All ON */
567 LUB_DISC_BLNK_LED |= 0xff;
568 for (i = 0; i < ARRAY_SIZE(lubbock_leds); i++) {
569 struct lubbock_led *led;
570
571 led = kzalloc(sizeof(*led), GFP_KERNEL);
572 if (!led)
573 break;
574
575 led->cdev.name = lubbock_leds[i].name;
576 led->cdev.brightness_set = lubbock_led_set;
577 led->cdev.brightness_get = lubbock_led_get;
578 led->cdev.default_trigger = lubbock_leds[i].trigger;
579 led->mask = BIT(i);
580
581 if (led_classdev_register(NULL, &led->cdev) < 0) {
582 kfree(led);
583 break;
584 }
585 }
586
587 return 0;
588 }
589
590 /*
591 * Since we may have triggers on any subsystem, defer registration
592 * until after subsystem_init.
593 */
594 fs_initcall(lubbock_leds_init);
595 #endif
596
597 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
598 /* Maintainer: MontaVista Software Inc. */
599 .map_io = lubbock_map_io,
600 .nr_irqs = LUBBOCK_NR_IRQS,
601 .init_irq = pxa25x_init_irq,
602 .handle_irq = pxa25x_handle_irq,
603 .init_time = pxa_timer_init,
604 .init_machine = lubbock_init,
605 .restart = pxa_restart,
606 MACHINE_END
607