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