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