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/clkdev.h>
15 #include <linux/gpio.h>
16 #include <linux/gpio/machine.h>
17 #include <linux/module.h>
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/io.h>
21 #include <linux/platform_device.h>
22 #include <linux/syscore_ops.h>
23 #include <linux/major.h>
24 #include <linux/fb.h>
25 #include <linux/interrupt.h>
26 #include <linux/mtd/mtd.h>
27 #include <linux/mtd/partitions.h>
28 #include <linux/smc91x.h>
29 #include <linux/slab.h>
30 #include <linux/leds.h>
31
32 #include <linux/spi/spi.h>
33 #include <linux/spi/ads7846.h>
34 #include <linux/spi/pxa2xx_spi.h>
35
36 #include <asm/setup.h>
37 #include <asm/memory.h>
38 #include <asm/mach-types.h>
39 #include <mach/hardware.h>
40 #include <asm/irq.h>
41 #include <asm/sizes.h>
42
43 #include <asm/mach/arch.h>
44 #include <asm/mach/map.h>
45 #include <asm/mach/irq.h>
46 #include <asm/mach/flash.h>
47
48 #include <asm/hardware/sa1111.h>
49
50 #include "pxa25x.h"
51 #include <mach/audio.h>
52 #include <mach/lubbock.h>
53 #include "udc.h"
54 #include <linux/platform_data/irda-pxaficp.h>
55 #include <linux/platform_data/video-pxafb.h>
56 #include <linux/platform_data/mmc-pxamci.h>
57 #include "pm.h"
58 #include <mach/smemc.h>
59
60 #include "generic.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 /* SA1111 chip */
106 GPIO11_3_6MHz,
107
108 /* wakeup */
109 GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
110 };
111
112 #define LUB_HEXLED __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
113 #define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
114
lubbock_set_hexled(uint32_t value)115 void lubbock_set_hexled(uint32_t value)
116 {
117 LUB_HEXLED = value;
118 }
119
lubbock_set_misc_wr(unsigned int mask,unsigned int set)120 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
121 {
122 unsigned long flags;
123
124 local_irq_save(flags);
125 LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
126 local_irq_restore(flags);
127 }
128 EXPORT_SYMBOL(lubbock_set_misc_wr);
129
lubbock_udc_is_connected(void)130 static int lubbock_udc_is_connected(void)
131 {
132 return (LUB_MISC_RD & (1 << 9)) == 0;
133 }
134
135 static struct pxa2xx_udc_mach_info udc_info __initdata = {
136 .udc_is_connected = lubbock_udc_is_connected,
137 // no D+ pullup; lubbock can't connect/disconnect in software
138 };
139
lubbock_init_pcmcia(void)140 static void lubbock_init_pcmcia(void)
141 {
142 struct clk *clk;
143
144 /* Add an alias for the SA1111 PCMCIA clock */
145 clk = clk_get_sys("pxa2xx-pcmcia", NULL);
146 if (!IS_ERR(clk)) {
147 clkdev_create(clk, NULL, "1800");
148 clk_put(clk);
149 }
150 }
151
152 static struct resource sa1111_resources[] = {
153 [0] = {
154 .start = 0x10000000,
155 .end = 0x10001fff,
156 .flags = IORESOURCE_MEM,
157 },
158 [1] = {
159 .start = LUBBOCK_SA1111_IRQ,
160 .end = LUBBOCK_SA1111_IRQ,
161 .flags = IORESOURCE_IRQ,
162 },
163 };
164
165 static struct sa1111_platform_data sa1111_info = {
166 .irq_base = LUBBOCK_SA1111_IRQ_BASE,
167 .disable_devs = SA1111_DEVID_SAC,
168 };
169
170 static struct platform_device sa1111_device = {
171 .name = "sa1111",
172 .id = -1,
173 .num_resources = ARRAY_SIZE(sa1111_resources),
174 .resource = sa1111_resources,
175 .dev = {
176 .platform_data = &sa1111_info,
177 },
178 };
179
180 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
181 * you can select it to replace the ucb1400 by switching the touchscreen cable
182 * (to J5) and poking board registers (as done below). Else it's only useful
183 * for the temperature sensors.
184 */
185 static struct pxa2xx_spi_master pxa_ssp_master_info = {
186 .num_chipselect = 1,
187 };
188
lubbock_ads7846_pendown_state(void)189 static int lubbock_ads7846_pendown_state(void)
190 {
191 /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
192 return 0;
193 }
194
195 static struct ads7846_platform_data ads_info = {
196 .model = 7846,
197 .vref_delay_usecs = 100, /* internal, no cap */
198 .get_pendown_state = lubbock_ads7846_pendown_state,
199 // .x_plate_ohms = 500, /* GUESS! */
200 // .y_plate_ohms = 500, /* GUESS! */
201 };
202
ads7846_cs(u32 command)203 static void ads7846_cs(u32 command)
204 {
205 static const unsigned TS_nCS = 1 << 11;
206 lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
207 }
208
209 static struct pxa2xx_spi_chip ads_hw = {
210 .tx_threshold = 1,
211 .rx_threshold = 2,
212 .cs_control = ads7846_cs,
213 };
214
215 static struct spi_board_info spi_board_info[] __initdata = { {
216 .modalias = "ads7846",
217 .platform_data = &ads_info,
218 .controller_data = &ads_hw,
219 .irq = LUBBOCK_BB_IRQ,
220 .max_speed_hz = 120000 /* max sample rate at 3V */
221 * 26 /* command + data + overhead */,
222 .bus_num = 1,
223 .chip_select = 0,
224 },
225 };
226
227 static struct resource smc91x_resources[] = {
228 [0] = {
229 .name = "smc91x-regs",
230 .start = 0x0c000c00,
231 .end = 0x0c0fffff,
232 .flags = IORESOURCE_MEM,
233 },
234 [1] = {
235 .start = LUBBOCK_ETH_IRQ,
236 .end = LUBBOCK_ETH_IRQ,
237 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
238 },
239 [2] = {
240 .name = "smc91x-attrib",
241 .start = 0x0e000000,
242 .end = 0x0e0fffff,
243 .flags = IORESOURCE_MEM,
244 },
245 };
246
247 static struct smc91x_platdata lubbock_smc91x_info = {
248 .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
249 };
250
251 static struct platform_device smc91x_device = {
252 .name = "smc91x",
253 .id = -1,
254 .num_resources = ARRAY_SIZE(smc91x_resources),
255 .resource = smc91x_resources,
256 .dev = {
257 .platform_data = &lubbock_smc91x_info,
258 },
259 };
260
261 static struct resource flash_resources[] = {
262 [0] = {
263 .start = 0x00000000,
264 .end = SZ_64M - 1,
265 .flags = IORESOURCE_MEM,
266 },
267 [1] = {
268 .start = 0x04000000,
269 .end = 0x04000000 + SZ_64M - 1,
270 .flags = IORESOURCE_MEM,
271 },
272 };
273
274 static struct mtd_partition lubbock_partitions[] = {
275 {
276 .name = "Bootloader",
277 .size = 0x00040000,
278 .offset = 0,
279 .mask_flags = MTD_WRITEABLE /* force read-only */
280 },{
281 .name = "Kernel",
282 .size = 0x00100000,
283 .offset = 0x00040000,
284 },{
285 .name = "Filesystem",
286 .size = MTDPART_SIZ_FULL,
287 .offset = 0x00140000
288 }
289 };
290
291 static struct flash_platform_data lubbock_flash_data[2] = {
292 {
293 .map_name = "cfi_probe",
294 .parts = lubbock_partitions,
295 .nr_parts = ARRAY_SIZE(lubbock_partitions),
296 }, {
297 .map_name = "cfi_probe",
298 .parts = NULL,
299 .nr_parts = 0,
300 }
301 };
302
303 static struct platform_device lubbock_flash_device[2] = {
304 {
305 .name = "pxa2xx-flash",
306 .id = 0,
307 .dev = {
308 .platform_data = &lubbock_flash_data[0],
309 },
310 .resource = &flash_resources[0],
311 .num_resources = 1,
312 },
313 {
314 .name = "pxa2xx-flash",
315 .id = 1,
316 .dev = {
317 .platform_data = &lubbock_flash_data[1],
318 },
319 .resource = &flash_resources[1],
320 .num_resources = 1,
321 },
322 };
323
324 static struct resource lubbock_cplds_resources[] = {
325 [0] = {
326 .start = LUBBOCK_FPGA_PHYS + 0xc0,
327 .end = LUBBOCK_FPGA_PHYS + 0xe0 - 1,
328 .flags = IORESOURCE_MEM,
329 },
330 [1] = {
331 .start = PXA_GPIO_TO_IRQ(0),
332 .end = PXA_GPIO_TO_IRQ(0),
333 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
334 },
335 [2] = {
336 .start = LUBBOCK_IRQ(0),
337 .end = LUBBOCK_IRQ(6),
338 .flags = IORESOURCE_IRQ,
339 },
340 };
341
342 static struct platform_device lubbock_cplds_device = {
343 .name = "pxa_cplds_irqs",
344 .id = -1,
345 .resource = &lubbock_cplds_resources[0],
346 .num_resources = 3,
347 };
348
349
350 static struct platform_device *devices[] __initdata = {
351 &sa1111_device,
352 &smc91x_device,
353 &lubbock_flash_device[0],
354 &lubbock_flash_device[1],
355 &lubbock_cplds_device,
356 };
357
358 static struct pxafb_mode_info sharp_lm8v31_mode = {
359 .pixclock = 270000,
360 .xres = 640,
361 .yres = 480,
362 .bpp = 16,
363 .hsync_len = 1,
364 .left_margin = 3,
365 .right_margin = 3,
366 .vsync_len = 1,
367 .upper_margin = 0,
368 .lower_margin = 0,
369 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
370 .cmap_greyscale = 0,
371 };
372
373 static struct pxafb_mach_info sharp_lm8v31 = {
374 .modes = &sharp_lm8v31_mode,
375 .num_modes = 1,
376 .cmap_inverse = 0,
377 .cmap_static = 0,
378 .lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
379 LCD_AC_BIAS_FREQ(255),
380 };
381
382 #define MMC_POLL_RATE msecs_to_jiffies(1000)
383
384 static void lubbock_mmc_poll(unsigned long);
385 static irq_handler_t mmc_detect_int;
386
387 static struct timer_list mmc_timer = {
388 .function = lubbock_mmc_poll,
389 };
390
lubbock_mmc_poll(unsigned long data)391 static void lubbock_mmc_poll(unsigned long data)
392 {
393 unsigned long flags;
394
395 /* clear any previous irq state, then ... */
396 local_irq_save(flags);
397 LUB_IRQ_SET_CLR &= ~(1 << 0);
398 local_irq_restore(flags);
399
400 /* poll until mmc/sd card is removed */
401 if (LUB_IRQ_SET_CLR & (1 << 0))
402 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
403 else {
404 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
405 enable_irq(LUBBOCK_SD_IRQ);
406 }
407 }
408
lubbock_detect_int(int irq,void * data)409 static irqreturn_t lubbock_detect_int(int irq, void *data)
410 {
411 /* IRQ is level triggered; disable, and poll for removal */
412 disable_irq(irq);
413 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
414
415 return mmc_detect_int(irq, data);
416 }
417
lubbock_mci_init(struct device * dev,irq_handler_t detect_int,void * data)418 static int lubbock_mci_init(struct device *dev,
419 irq_handler_t detect_int,
420 void *data)
421 {
422 /* detect card insert/eject */
423 mmc_detect_int = detect_int;
424 init_timer(&mmc_timer);
425 mmc_timer.data = (unsigned long) data;
426 return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
427 0, "lubbock-sd-detect", data);
428 }
429
lubbock_mci_get_ro(struct device * dev)430 static int lubbock_mci_get_ro(struct device *dev)
431 {
432 return (LUB_MISC_RD & (1 << 2)) != 0;
433 }
434
lubbock_mci_exit(struct device * dev,void * data)435 static void lubbock_mci_exit(struct device *dev, void *data)
436 {
437 free_irq(LUBBOCK_SD_IRQ, data);
438 del_timer_sync(&mmc_timer);
439 }
440
441 static struct pxamci_platform_data lubbock_mci_platform_data = {
442 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
443 .detect_delay_ms = 10,
444 .init = lubbock_mci_init,
445 .get_ro = lubbock_mci_get_ro,
446 .exit = lubbock_mci_exit,
447 .gpio_card_detect = -1,
448 .gpio_card_ro = -1,
449 .gpio_power = -1,
450 };
451
lubbock_irda_transceiver_mode(struct device * dev,int mode)452 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
453 {
454 unsigned long flags;
455
456 local_irq_save(flags);
457 if (mode & IR_SIRMODE) {
458 LUB_MISC_WR &= ~(1 << 4);
459 } else if (mode & IR_FIRMODE) {
460 LUB_MISC_WR |= 1 << 4;
461 }
462 pxa2xx_transceiver_mode(dev, mode);
463 local_irq_restore(flags);
464 }
465
466 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
467 .gpio_pwdown = -1,
468 .transceiver_cap = IR_SIRMODE | IR_FIRMODE,
469 .transceiver_mode = lubbock_irda_transceiver_mode,
470 };
471
lubbock_init(void)472 static void __init lubbock_init(void)
473 {
474 int flashboot = (LUB_CONF_SWITCHES & 1);
475
476 pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
477
478 pxa_set_ffuart_info(NULL);
479 pxa_set_btuart_info(NULL);
480 pxa_set_stuart_info(NULL);
481
482 lubbock_init_pcmcia();
483
484 clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
485 pxa_set_udc_info(&udc_info);
486 pxa_set_fb_info(NULL, &sharp_lm8v31);
487 pxa_set_mci_info(&lubbock_mci_platform_data);
488 pxa_set_ficp_info(&lubbock_ficp_platform_data);
489 pxa_set_ac97_info(NULL);
490
491 lubbock_flash_data[0].width = lubbock_flash_data[1].width =
492 (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
493 /* Compensate for the nROMBT switch which swaps the flash banks */
494 printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
495 flashboot?"Flash":"ROM", flashboot);
496
497 lubbock_flash_data[flashboot^1].name = "application-flash";
498 lubbock_flash_data[flashboot].name = "boot-rom";
499 (void) platform_add_devices(devices, ARRAY_SIZE(devices));
500
501 pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
502 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
503 }
504
505 static struct map_desc lubbock_io_desc[] __initdata = {
506 { /* CPLD */
507 .virtual = LUBBOCK_FPGA_VIRT,
508 .pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
509 .length = 0x00100000,
510 .type = MT_DEVICE
511 }
512 };
513
lubbock_map_io(void)514 static void __init lubbock_map_io(void)
515 {
516 pxa25x_map_io();
517 iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
518
519 PCFR |= PCFR_OPDE;
520 }
521
522 /*
523 * Driver for the 8 discrete LEDs available for general use:
524 * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
525 * so be sure to not monkey with them here.
526 */
527
528 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
529 struct lubbock_led {
530 struct led_classdev cdev;
531 u8 mask;
532 };
533
534 /*
535 * The triggers lines up below will only be used if the
536 * LED triggers are compiled in.
537 */
538 static const struct {
539 const char *name;
540 const char *trigger;
541 } lubbock_leds[] = {
542 { "lubbock:D28", "default-on", },
543 { "lubbock:D27", "cpu0", },
544 { "lubbock:D26", "heartbeat" },
545 { "lubbock:D25", },
546 { "lubbock:D24", },
547 { "lubbock:D23", },
548 { "lubbock:D22", },
549 { "lubbock:D21", },
550 };
551
lubbock_led_set(struct led_classdev * cdev,enum led_brightness b)552 static void lubbock_led_set(struct led_classdev *cdev,
553 enum led_brightness b)
554 {
555 struct lubbock_led *led = container_of(cdev,
556 struct lubbock_led, cdev);
557 u32 reg = LUB_DISC_BLNK_LED;
558
559 if (b != LED_OFF)
560 reg |= led->mask;
561 else
562 reg &= ~led->mask;
563
564 LUB_DISC_BLNK_LED = reg;
565 }
566
lubbock_led_get(struct led_classdev * cdev)567 static enum led_brightness lubbock_led_get(struct led_classdev *cdev)
568 {
569 struct lubbock_led *led = container_of(cdev,
570 struct lubbock_led, cdev);
571 u32 reg = LUB_DISC_BLNK_LED;
572
573 return (reg & led->mask) ? LED_FULL : LED_OFF;
574 }
575
lubbock_leds_init(void)576 static int __init lubbock_leds_init(void)
577 {
578 int i;
579
580 if (!machine_is_lubbock())
581 return -ENODEV;
582
583 /* All ON */
584 LUB_DISC_BLNK_LED |= 0xff;
585 for (i = 0; i < ARRAY_SIZE(lubbock_leds); i++) {
586 struct lubbock_led *led;
587
588 led = kzalloc(sizeof(*led), GFP_KERNEL);
589 if (!led)
590 break;
591
592 led->cdev.name = lubbock_leds[i].name;
593 led->cdev.brightness_set = lubbock_led_set;
594 led->cdev.brightness_get = lubbock_led_get;
595 led->cdev.default_trigger = lubbock_leds[i].trigger;
596 led->mask = BIT(i);
597
598 if (led_classdev_register(NULL, &led->cdev) < 0) {
599 kfree(led);
600 break;
601 }
602 }
603
604 return 0;
605 }
606
607 /*
608 * Since we may have triggers on any subsystem, defer registration
609 * until after subsystem_init.
610 */
611 fs_initcall(lubbock_leds_init);
612 #endif
613
614 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
615 /* Maintainer: MontaVista Software Inc. */
616 .map_io = lubbock_map_io,
617 .nr_irqs = LUBBOCK_NR_IRQS,
618 .init_irq = pxa25x_init_irq,
619 .handle_irq = pxa25x_handle_irq,
620 .init_time = pxa_timer_init,
621 .init_machine = lubbock_init,
622 .restart = pxa_restart,
623 MACHINE_END
624