b742708c5dd52af26150cc6a5509b8189a1c60f9
[deliverable/linux.git] / arch / arm / mach-pxa / lubbock.c
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/module.h>
16 #include <linux/kernel.h>
17 #include <linux/init.h>
18 #include <linux/io.h>
19 #include <linux/platform_device.h>
20 #include <linux/syscore_ops.h>
21 #include <linux/major.h>
22 #include <linux/fb.h>
23 #include <linux/interrupt.h>
24 #include <linux/mtd/mtd.h>
25 #include <linux/mtd/partitions.h>
26 #include <linux/smc91x.h>
27 #include <linux/slab.h>
28 #include <linux/leds.h>
29
30 #include <linux/spi/spi.h>
31 #include <linux/spi/ads7846.h>
32 #include <linux/spi/pxa2xx_spi.h>
33
34 #include <asm/setup.h>
35 #include <asm/memory.h>
36 #include <asm/mach-types.h>
37 #include <mach/hardware.h>
38 #include <asm/irq.h>
39 #include <asm/sizes.h>
40
41 #include <asm/mach/arch.h>
42 #include <asm/mach/map.h>
43 #include <asm/mach/irq.h>
44 #include <asm/mach/flash.h>
45
46 #include <asm/hardware/sa1111.h>
47
48 #include <mach/pxa25x.h>
49 #include <mach/audio.h>
50 #include <mach/lubbock.h>
51 #include <mach/udc.h>
52 #include <linux/platform_data/irda-pxaficp.h>
53 #include <linux/platform_data/video-pxafb.h>
54 #include <linux/platform_data/mmc-pxamci.h>
55 #include <mach/pm.h>
56 #include <mach/smemc.h>
57
58 #include "generic.h"
59 #include "clock.h"
60 #include "devices.h"
61
62 static unsigned long lubbock_pin_config[] __initdata = {
63 GPIO15_nCS_1, /* CS1 - Flash */
64 GPIO78_nCS_2, /* CS2 - Baseboard FGPA */
65 GPIO79_nCS_3, /* CS3 - SMC ethernet */
66 GPIO80_nCS_4, /* CS4 - SA1111 */
67
68 /* SSP data pins */
69 GPIO23_SSP1_SCLK,
70 GPIO25_SSP1_TXD,
71 GPIO26_SSP1_RXD,
72
73 /* AC97 */
74 GPIO28_AC97_BITCLK,
75 GPIO29_AC97_SDATA_IN_0,
76 GPIO30_AC97_SDATA_OUT,
77 GPIO31_AC97_SYNC,
78
79 /* LCD - 16bpp DSTN */
80 GPIOxx_LCD_DSTN_16BPP,
81
82 /* BTUART */
83 GPIO42_BTUART_RXD,
84 GPIO43_BTUART_TXD,
85 GPIO44_BTUART_CTS,
86 GPIO45_BTUART_RTS,
87
88 /* PC Card */
89 GPIO48_nPOE,
90 GPIO49_nPWE,
91 GPIO50_nPIOR,
92 GPIO51_nPIOW,
93 GPIO52_nPCE_1,
94 GPIO53_nPCE_2,
95 GPIO54_nPSKTSEL,
96 GPIO55_nPREG,
97 GPIO56_nPWAIT,
98 GPIO57_nIOIS16,
99
100 /* MMC */
101 GPIO6_MMC_CLK,
102 GPIO8_MMC_CS0,
103
104 /* SA1111 chip */
105 GPIO11_3_6MHz,
106
107 /* wakeup */
108 GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
109 };
110
111 #define LUB_HEXLED __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
112 #define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
113
114 void lubbock_set_hexled(uint32_t value)
115 {
116 LUB_HEXLED = value;
117 }
118
119 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
120 {
121 unsigned long flags;
122
123 local_irq_save(flags);
124 LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
125 local_irq_restore(flags);
126 }
127 EXPORT_SYMBOL(lubbock_set_misc_wr);
128
129 static unsigned long lubbock_irq_enabled;
130
131 static void lubbock_mask_irq(struct irq_data *d)
132 {
133 int lubbock_irq = (d->irq - LUBBOCK_IRQ(0));
134 LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
135 }
136
137 static void lubbock_unmask_irq(struct irq_data *d)
138 {
139 int lubbock_irq = (d->irq - LUBBOCK_IRQ(0));
140 /* the irq can be acknowledged only if deasserted, so it's done here */
141 LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
142 LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
143 }
144
145 static struct irq_chip lubbock_irq_chip = {
146 .name = "FPGA",
147 .irq_ack = lubbock_mask_irq,
148 .irq_mask = lubbock_mask_irq,
149 .irq_unmask = lubbock_unmask_irq,
150 };
151
152 static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
153 {
154 unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
155 do {
156 /* clear our parent irq */
157 desc->irq_data.chip->irq_ack(&desc->irq_data);
158 if (likely(pending)) {
159 irq = LUBBOCK_IRQ(0) + __ffs(pending);
160 generic_handle_irq(irq);
161 }
162 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
163 } while (pending);
164 }
165
166 static void __init lubbock_init_irq(void)
167 {
168 int irq;
169
170 pxa25x_init_irq();
171
172 /* setup extra lubbock irqs */
173 for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
174 irq_set_chip_and_handler(irq, &lubbock_irq_chip,
175 handle_level_irq);
176 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
177 }
178
179 irq_set_chained_handler(PXA_GPIO_TO_IRQ(0), lubbock_irq_handler);
180 irq_set_irq_type(PXA_GPIO_TO_IRQ(0), IRQ_TYPE_EDGE_FALLING);
181 }
182
183 #ifdef CONFIG_PM
184
185 static void lubbock_irq_resume(void)
186 {
187 LUB_IRQ_MASK_EN = lubbock_irq_enabled;
188 }
189
190 static struct syscore_ops lubbock_irq_syscore_ops = {
191 .resume = lubbock_irq_resume,
192 };
193
194 static int __init lubbock_irq_device_init(void)
195 {
196 if (machine_is_lubbock()) {
197 register_syscore_ops(&lubbock_irq_syscore_ops);
198 return 0;
199 }
200 return -ENODEV;
201 }
202
203 device_initcall(lubbock_irq_device_init);
204
205 #endif
206
207 static int lubbock_udc_is_connected(void)
208 {
209 return (LUB_MISC_RD & (1 << 9)) == 0;
210 }
211
212 static struct pxa2xx_udc_mach_info udc_info __initdata = {
213 .udc_is_connected = lubbock_udc_is_connected,
214 // no D+ pullup; lubbock can't connect/disconnect in software
215 };
216
217 static struct resource sa1111_resources[] = {
218 [0] = {
219 .start = 0x10000000,
220 .end = 0x10001fff,
221 .flags = IORESOURCE_MEM,
222 },
223 [1] = {
224 .start = LUBBOCK_SA1111_IRQ,
225 .end = LUBBOCK_SA1111_IRQ,
226 .flags = IORESOURCE_IRQ,
227 },
228 };
229
230 static struct sa1111_platform_data sa1111_info = {
231 .irq_base = LUBBOCK_SA1111_IRQ_BASE,
232 .disable_devs = SA1111_DEVID_SAC,
233 };
234
235 static struct platform_device sa1111_device = {
236 .name = "sa1111",
237 .id = -1,
238 .num_resources = ARRAY_SIZE(sa1111_resources),
239 .resource = sa1111_resources,
240 .dev = {
241 .platform_data = &sa1111_info,
242 },
243 };
244
245 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
246 * you can select it to replace the ucb1400 by switching the touchscreen cable
247 * (to J5) and poking board registers (as done below). Else it's only useful
248 * for the temperature sensors.
249 */
250 static struct pxa2xx_spi_master pxa_ssp_master_info = {
251 .num_chipselect = 1,
252 };
253
254 static int lubbock_ads7846_pendown_state(void)
255 {
256 /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
257 return 0;
258 }
259
260 static struct ads7846_platform_data ads_info = {
261 .model = 7846,
262 .vref_delay_usecs = 100, /* internal, no cap */
263 .get_pendown_state = lubbock_ads7846_pendown_state,
264 // .x_plate_ohms = 500, /* GUESS! */
265 // .y_plate_ohms = 500, /* GUESS! */
266 };
267
268 static void ads7846_cs(u32 command)
269 {
270 static const unsigned TS_nCS = 1 << 11;
271 lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
272 }
273
274 static struct pxa2xx_spi_chip ads_hw = {
275 .tx_threshold = 1,
276 .rx_threshold = 2,
277 .cs_control = ads7846_cs,
278 };
279
280 static struct spi_board_info spi_board_info[] __initdata = { {
281 .modalias = "ads7846",
282 .platform_data = &ads_info,
283 .controller_data = &ads_hw,
284 .irq = LUBBOCK_BB_IRQ,
285 .max_speed_hz = 120000 /* max sample rate at 3V */
286 * 26 /* command + data + overhead */,
287 .bus_num = 1,
288 .chip_select = 0,
289 },
290 };
291
292 static struct resource smc91x_resources[] = {
293 [0] = {
294 .name = "smc91x-regs",
295 .start = 0x0c000c00,
296 .end = 0x0c0fffff,
297 .flags = IORESOURCE_MEM,
298 },
299 [1] = {
300 .start = LUBBOCK_ETH_IRQ,
301 .end = LUBBOCK_ETH_IRQ,
302 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
303 },
304 [2] = {
305 .name = "smc91x-attrib",
306 .start = 0x0e000000,
307 .end = 0x0e0fffff,
308 .flags = IORESOURCE_MEM,
309 },
310 };
311
312 static struct smc91x_platdata lubbock_smc91x_info = {
313 .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
314 };
315
316 static struct platform_device smc91x_device = {
317 .name = "smc91x",
318 .id = -1,
319 .num_resources = ARRAY_SIZE(smc91x_resources),
320 .resource = smc91x_resources,
321 .dev = {
322 .platform_data = &lubbock_smc91x_info,
323 },
324 };
325
326 static struct resource flash_resources[] = {
327 [0] = {
328 .start = 0x00000000,
329 .end = SZ_64M - 1,
330 .flags = IORESOURCE_MEM,
331 },
332 [1] = {
333 .start = 0x04000000,
334 .end = 0x04000000 + SZ_64M - 1,
335 .flags = IORESOURCE_MEM,
336 },
337 };
338
339 static struct mtd_partition lubbock_partitions[] = {
340 {
341 .name = "Bootloader",
342 .size = 0x00040000,
343 .offset = 0,
344 .mask_flags = MTD_WRITEABLE /* force read-only */
345 },{
346 .name = "Kernel",
347 .size = 0x00100000,
348 .offset = 0x00040000,
349 },{
350 .name = "Filesystem",
351 .size = MTDPART_SIZ_FULL,
352 .offset = 0x00140000
353 }
354 };
355
356 static struct flash_platform_data lubbock_flash_data[2] = {
357 {
358 .map_name = "cfi_probe",
359 .parts = lubbock_partitions,
360 .nr_parts = ARRAY_SIZE(lubbock_partitions),
361 }, {
362 .map_name = "cfi_probe",
363 .parts = NULL,
364 .nr_parts = 0,
365 }
366 };
367
368 static struct platform_device lubbock_flash_device[2] = {
369 {
370 .name = "pxa2xx-flash",
371 .id = 0,
372 .dev = {
373 .platform_data = &lubbock_flash_data[0],
374 },
375 .resource = &flash_resources[0],
376 .num_resources = 1,
377 },
378 {
379 .name = "pxa2xx-flash",
380 .id = 1,
381 .dev = {
382 .platform_data = &lubbock_flash_data[1],
383 },
384 .resource = &flash_resources[1],
385 .num_resources = 1,
386 },
387 };
388
389 static struct platform_device *devices[] __initdata = {
390 &sa1111_device,
391 &smc91x_device,
392 &lubbock_flash_device[0],
393 &lubbock_flash_device[1],
394 };
395
396 static struct pxafb_mode_info sharp_lm8v31_mode = {
397 .pixclock = 270000,
398 .xres = 640,
399 .yres = 480,
400 .bpp = 16,
401 .hsync_len = 1,
402 .left_margin = 3,
403 .right_margin = 3,
404 .vsync_len = 1,
405 .upper_margin = 0,
406 .lower_margin = 0,
407 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
408 .cmap_greyscale = 0,
409 };
410
411 static struct pxafb_mach_info sharp_lm8v31 = {
412 .modes = &sharp_lm8v31_mode,
413 .num_modes = 1,
414 .cmap_inverse = 0,
415 .cmap_static = 0,
416 .lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
417 LCD_AC_BIAS_FREQ(255),
418 };
419
420 #define MMC_POLL_RATE msecs_to_jiffies(1000)
421
422 static void lubbock_mmc_poll(unsigned long);
423 static irq_handler_t mmc_detect_int;
424
425 static struct timer_list mmc_timer = {
426 .function = lubbock_mmc_poll,
427 };
428
429 static void lubbock_mmc_poll(unsigned long data)
430 {
431 unsigned long flags;
432
433 /* clear any previous irq state, then ... */
434 local_irq_save(flags);
435 LUB_IRQ_SET_CLR &= ~(1 << 0);
436 local_irq_restore(flags);
437
438 /* poll until mmc/sd card is removed */
439 if (LUB_IRQ_SET_CLR & (1 << 0))
440 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
441 else {
442 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
443 enable_irq(LUBBOCK_SD_IRQ);
444 }
445 }
446
447 static irqreturn_t lubbock_detect_int(int irq, void *data)
448 {
449 /* IRQ is level triggered; disable, and poll for removal */
450 disable_irq(irq);
451 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
452
453 return mmc_detect_int(irq, data);
454 }
455
456 static int lubbock_mci_init(struct device *dev,
457 irq_handler_t detect_int,
458 void *data)
459 {
460 /* detect card insert/eject */
461 mmc_detect_int = detect_int;
462 init_timer(&mmc_timer);
463 mmc_timer.data = (unsigned long) data;
464 return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
465 0, "lubbock-sd-detect", data);
466 }
467
468 static int lubbock_mci_get_ro(struct device *dev)
469 {
470 return (LUB_MISC_RD & (1 << 2)) != 0;
471 }
472
473 static void lubbock_mci_exit(struct device *dev, void *data)
474 {
475 free_irq(LUBBOCK_SD_IRQ, data);
476 del_timer_sync(&mmc_timer);
477 }
478
479 static struct pxamci_platform_data lubbock_mci_platform_data = {
480 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
481 .detect_delay_ms = 10,
482 .init = lubbock_mci_init,
483 .get_ro = lubbock_mci_get_ro,
484 .exit = lubbock_mci_exit,
485 .gpio_card_detect = -1,
486 .gpio_card_ro = -1,
487 .gpio_power = -1,
488 };
489
490 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
491 {
492 unsigned long flags;
493
494 local_irq_save(flags);
495 if (mode & IR_SIRMODE) {
496 LUB_MISC_WR &= ~(1 << 4);
497 } else if (mode & IR_FIRMODE) {
498 LUB_MISC_WR |= 1 << 4;
499 }
500 pxa2xx_transceiver_mode(dev, mode);
501 local_irq_restore(flags);
502 }
503
504 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
505 .gpio_pwdown = -1,
506 .transceiver_cap = IR_SIRMODE | IR_FIRMODE,
507 .transceiver_mode = lubbock_irda_transceiver_mode,
508 };
509
510 static void __init lubbock_init(void)
511 {
512 int flashboot = (LUB_CONF_SWITCHES & 1);
513
514 pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
515
516 pxa_set_ffuart_info(NULL);
517 pxa_set_btuart_info(NULL);
518 pxa_set_stuart_info(NULL);
519
520 clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
521 pxa_set_udc_info(&udc_info);
522 pxa_set_fb_info(NULL, &sharp_lm8v31);
523 pxa_set_mci_info(&lubbock_mci_platform_data);
524 pxa_set_ficp_info(&lubbock_ficp_platform_data);
525 pxa_set_ac97_info(NULL);
526
527 lubbock_flash_data[0].width = lubbock_flash_data[1].width =
528 (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
529 /* Compensate for the nROMBT switch which swaps the flash banks */
530 printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
531 flashboot?"Flash":"ROM", flashboot);
532
533 lubbock_flash_data[flashboot^1].name = "application-flash";
534 lubbock_flash_data[flashboot].name = "boot-rom";
535 (void) platform_add_devices(devices, ARRAY_SIZE(devices));
536
537 pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
538 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
539 }
540
541 static struct map_desc lubbock_io_desc[] __initdata = {
542 { /* CPLD */
543 .virtual = LUBBOCK_FPGA_VIRT,
544 .pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
545 .length = 0x00100000,
546 .type = MT_DEVICE
547 }
548 };
549
550 static void __init lubbock_map_io(void)
551 {
552 pxa25x_map_io();
553 iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
554
555 PCFR |= PCFR_OPDE;
556 }
557
558 /*
559 * Driver for the 8 discrete LEDs available for general use:
560 * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
561 * so be sure to not monkey with them here.
562 */
563
564 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
565 struct lubbock_led {
566 struct led_classdev cdev;
567 u8 mask;
568 };
569
570 /*
571 * The triggers lines up below will only be used if the
572 * LED triggers are compiled in.
573 */
574 static const struct {
575 const char *name;
576 const char *trigger;
577 } lubbock_leds[] = {
578 { "lubbock:D28", "default-on", },
579 { "lubbock:D27", "cpu0", },
580 { "lubbock:D26", "heartbeat" },
581 { "lubbock:D25", },
582 { "lubbock:D24", },
583 { "lubbock:D23", },
584 { "lubbock:D22", },
585 { "lubbock:D21", },
586 };
587
588 static void lubbock_led_set(struct led_classdev *cdev,
589 enum led_brightness b)
590 {
591 struct lubbock_led *led = container_of(cdev,
592 struct lubbock_led, cdev);
593 u32 reg = LUB_DISC_BLNK_LED;
594
595 if (b != LED_OFF)
596 reg |= led->mask;
597 else
598 reg &= ~led->mask;
599
600 LUB_DISC_BLNK_LED = reg;
601 }
602
603 static enum led_brightness lubbock_led_get(struct led_classdev *cdev)
604 {
605 struct lubbock_led *led = container_of(cdev,
606 struct lubbock_led, cdev);
607 u32 reg = LUB_DISC_BLNK_LED;
608
609 return (reg & led->mask) ? LED_FULL : LED_OFF;
610 }
611
612 static int __init lubbock_leds_init(void)
613 {
614 int i;
615
616 if (!machine_is_lubbock())
617 return -ENODEV;
618
619 /* All ON */
620 LUB_DISC_BLNK_LED |= 0xff;
621 for (i = 0; i < ARRAY_SIZE(lubbock_leds); i++) {
622 struct lubbock_led *led;
623
624 led = kzalloc(sizeof(*led), GFP_KERNEL);
625 if (!led)
626 break;
627
628 led->cdev.name = lubbock_leds[i].name;
629 led->cdev.brightness_set = lubbock_led_set;
630 led->cdev.brightness_get = lubbock_led_get;
631 led->cdev.default_trigger = lubbock_leds[i].trigger;
632 led->mask = BIT(i);
633
634 if (led_classdev_register(NULL, &led->cdev) < 0) {
635 kfree(led);
636 break;
637 }
638 }
639
640 return 0;
641 }
642
643 /*
644 * Since we may have triggers on any subsystem, defer registration
645 * until after subsystem_init.
646 */
647 fs_initcall(lubbock_leds_init);
648 #endif
649
650 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
651 /* Maintainer: MontaVista Software Inc. */
652 .map_io = lubbock_map_io,
653 .nr_irqs = LUBBOCK_NR_IRQS,
654 .init_irq = lubbock_init_irq,
655 .handle_irq = pxa25x_handle_irq,
656 .init_time = pxa_timer_init,
657 .init_machine = lubbock_init,
658 .restart = pxa_restart,
659 MACHINE_END
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