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/gpio-reg.h>
17 #include <linux/gpio/machine.h>
18 #include <linux/module.h>
19 #include <linux/kernel.h>
20 #include <linux/init.h>
21 #include <linux/io.h>
22 #include <linux/platform_device.h>
23 #include <linux/syscore_ops.h>
24 #include <linux/major.h>
25 #include <linux/fb.h>
26 #include <linux/interrupt.h>
27 #include <linux/mtd/mtd.h>
28 #include <linux/mtd/partitions.h>
29 #include <linux/smc91x.h>
30 #include <linux/slab.h>
31 #include <linux/leds.h>
32
33 #include <linux/spi/spi.h>
34 #include <linux/spi/ads7846.h>
35 #include <linux/spi/pxa2xx_spi.h>
36
37 #include <asm/setup.h>
38 #include <asm/memory.h>
39 #include <asm/mach-types.h>
40 #include <mach/hardware.h>
41 #include <asm/irq.h>
42 #include <asm/sizes.h>
43
44 #include <asm/mach/arch.h>
45 #include <asm/mach/map.h>
46 #include <asm/mach/irq.h>
47 #include <asm/mach/flash.h>
48
49 #include <asm/hardware/sa1111.h>
50
51 #include "pxa25x.h"
52 #include <mach/audio.h>
53 #include <mach/lubbock.h>
54 #include "udc.h"
55 #include <linux/platform_data/irda-pxaficp.h>
56 #include <linux/platform_data/video-pxafb.h>
57 #include <linux/platform_data/mmc-pxamci.h>
58 #include "pm.h"
59 #include <mach/smemc.h>
60
61 #include "generic.h"
62 #include "devices.h"
63
64 static unsigned long lubbock_pin_config[] __initdata = {
65 GPIO15_nCS_1, /* CS1 - Flash */
66 GPIO78_nCS_2, /* CS2 - Baseboard FGPA */
67 GPIO79_nCS_3, /* CS3 - SMC ethernet */
68 GPIO80_nCS_4, /* CS4 - SA1111 */
69
70 /* SSP data pins */
71 GPIO23_SSP1_SCLK,
72 GPIO25_SSP1_TXD,
73 GPIO26_SSP1_RXD,
74
75 /* AC97 */
76 GPIO28_AC97_BITCLK,
77 GPIO29_AC97_SDATA_IN_0,
78 GPIO30_AC97_SDATA_OUT,
79 GPIO31_AC97_SYNC,
80
81 /* LCD - 16bpp DSTN */
82 GPIOxx_LCD_DSTN_16BPP,
83
84 /* BTUART */
85 GPIO42_BTUART_RXD,
86 GPIO43_BTUART_TXD,
87 GPIO44_BTUART_CTS,
88 GPIO45_BTUART_RTS,
89
90 /* PC Card */
91 GPIO48_nPOE,
92 GPIO49_nPWE,
93 GPIO50_nPIOR,
94 GPIO51_nPIOW,
95 GPIO52_nPCE_1,
96 GPIO53_nPCE_2,
97 GPIO54_nPSKTSEL,
98 GPIO55_nPREG,
99 GPIO56_nPWAIT,
100 GPIO57_nIOIS16,
101
102 /* MMC */
103 GPIO6_MMC_CLK,
104 GPIO8_MMC_CS0,
105
106 /* SA1111 chip */
107 GPIO11_3_6MHz,
108
109 /* wakeup */
110 GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
111 };
112
113 #define LUB_HEXLED __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
114
lubbock_set_hexled(uint32_t value)115 void lubbock_set_hexled(uint32_t value)
116 {
117 LUB_HEXLED = value;
118 }
119
120 static struct gpio_chip *lubbock_misc_wr_gc;
121
lubbock_set_misc_wr(unsigned int mask,unsigned int set)122 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
123 {
124 unsigned long m = mask, v = set;
125 lubbock_misc_wr_gc->set_multiple(lubbock_misc_wr_gc, &m, &v);
126 }
127 EXPORT_SYMBOL(lubbock_set_misc_wr);
128
lubbock_udc_is_connected(void)129 static int lubbock_udc_is_connected(void)
130 {
131 return (LUB_MISC_RD & (1 << 9)) == 0;
132 }
133
134 static struct pxa2xx_udc_mach_info udc_info __initdata = {
135 .udc_is_connected = lubbock_udc_is_connected,
136 // no D+ pullup; lubbock can't connect/disconnect in software
137 };
138
lubbock_init_pcmcia(void)139 static void lubbock_init_pcmcia(void)
140 {
141 struct clk *clk;
142
143 /* Add an alias for the SA1111 PCMCIA clock */
144 clk = clk_get_sys("pxa2xx-pcmcia", NULL);
145 if (!IS_ERR(clk)) {
146 clkdev_create(clk, NULL, "1800");
147 clk_put(clk);
148 }
149 }
150
151 static struct resource sa1111_resources[] = {
152 [0] = {
153 .start = 0x10000000,
154 .end = 0x10001fff,
155 .flags = IORESOURCE_MEM,
156 },
157 [1] = {
158 .start = LUBBOCK_SA1111_IRQ,
159 .end = LUBBOCK_SA1111_IRQ,
160 .flags = IORESOURCE_IRQ,
161 },
162 };
163
164 static struct sa1111_platform_data sa1111_info = {
165 .irq_base = LUBBOCK_SA1111_IRQ_BASE,
166 .disable_devs = SA1111_DEVID_SAC,
167 };
168
169 static struct platform_device sa1111_device = {
170 .name = "sa1111",
171 .id = -1,
172 .num_resources = ARRAY_SIZE(sa1111_resources),
173 .resource = sa1111_resources,
174 .dev = {
175 .platform_data = &sa1111_info,
176 },
177 };
178
179 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
180 * you can select it to replace the ucb1400 by switching the touchscreen cable
181 * (to J5) and poking board registers (as done below). Else it's only useful
182 * for the temperature sensors.
183 */
184 static struct pxa2xx_spi_master pxa_ssp_master_info = {
185 .num_chipselect = 1,
186 };
187
lubbock_ads7846_pendown_state(void)188 static int lubbock_ads7846_pendown_state(void)
189 {
190 /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
191 return 0;
192 }
193
194 static struct ads7846_platform_data ads_info = {
195 .model = 7846,
196 .vref_delay_usecs = 100, /* internal, no cap */
197 .get_pendown_state = lubbock_ads7846_pendown_state,
198 // .x_plate_ohms = 500, /* GUESS! */
199 // .y_plate_ohms = 500, /* GUESS! */
200 };
201
ads7846_cs(u32 command)202 static void ads7846_cs(u32 command)
203 {
204 static const unsigned TS_nCS = 1 << 11;
205 lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
206 }
207
208 static struct pxa2xx_spi_chip ads_hw = {
209 .tx_threshold = 1,
210 .rx_threshold = 2,
211 .cs_control = ads7846_cs,
212 };
213
214 static struct spi_board_info spi_board_info[] __initdata = { {
215 .modalias = "ads7846",
216 .platform_data = &ads_info,
217 .controller_data = &ads_hw,
218 .irq = LUBBOCK_BB_IRQ,
219 .max_speed_hz = 120000 /* max sample rate at 3V */
220 * 26 /* command + data + overhead */,
221 .bus_num = 1,
222 .chip_select = 0,
223 },
224 };
225
226 static struct resource smc91x_resources[] = {
227 [0] = {
228 .name = "smc91x-regs",
229 .start = 0x0c000c00,
230 .end = 0x0c0fffff,
231 .flags = IORESOURCE_MEM,
232 },
233 [1] = {
234 .start = LUBBOCK_ETH_IRQ,
235 .end = LUBBOCK_ETH_IRQ,
236 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
237 },
238 [2] = {
239 .name = "smc91x-attrib",
240 .start = 0x0e000000,
241 .end = 0x0e0fffff,
242 .flags = IORESOURCE_MEM,
243 },
244 };
245
246 static struct smc91x_platdata lubbock_smc91x_info = {
247 .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
248 };
249
250 static struct platform_device smc91x_device = {
251 .name = "smc91x",
252 .id = -1,
253 .num_resources = ARRAY_SIZE(smc91x_resources),
254 .resource = smc91x_resources,
255 .dev = {
256 .platform_data = &lubbock_smc91x_info,
257 },
258 };
259
260 static struct resource flash_resources[] = {
261 [0] = {
262 .start = 0x00000000,
263 .end = SZ_64M - 1,
264 .flags = IORESOURCE_MEM,
265 },
266 [1] = {
267 .start = 0x04000000,
268 .end = 0x04000000 + SZ_64M - 1,
269 .flags = IORESOURCE_MEM,
270 },
271 };
272
273 static struct mtd_partition lubbock_partitions[] = {
274 {
275 .name = "Bootloader",
276 .size = 0x00040000,
277 .offset = 0,
278 .mask_flags = MTD_WRITEABLE /* force read-only */
279 },{
280 .name = "Kernel",
281 .size = 0x00100000,
282 .offset = 0x00040000,
283 },{
284 .name = "Filesystem",
285 .size = MTDPART_SIZ_FULL,
286 .offset = 0x00140000
287 }
288 };
289
290 static struct flash_platform_data lubbock_flash_data[2] = {
291 {
292 .map_name = "cfi_probe",
293 .parts = lubbock_partitions,
294 .nr_parts = ARRAY_SIZE(lubbock_partitions),
295 }, {
296 .map_name = "cfi_probe",
297 .parts = NULL,
298 .nr_parts = 0,
299 }
300 };
301
302 static struct platform_device lubbock_flash_device[2] = {
303 {
304 .name = "pxa2xx-flash",
305 .id = 0,
306 .dev = {
307 .platform_data = &lubbock_flash_data[0],
308 },
309 .resource = &flash_resources[0],
310 .num_resources = 1,
311 },
312 {
313 .name = "pxa2xx-flash",
314 .id = 1,
315 .dev = {
316 .platform_data = &lubbock_flash_data[1],
317 },
318 .resource = &flash_resources[1],
319 .num_resources = 1,
320 },
321 };
322
323 static struct resource lubbock_cplds_resources[] = {
324 [0] = {
325 .start = LUBBOCK_FPGA_PHYS + 0xc0,
326 .end = LUBBOCK_FPGA_PHYS + 0xe0 - 1,
327 .flags = IORESOURCE_MEM,
328 },
329 [1] = {
330 .start = PXA_GPIO_TO_IRQ(0),
331 .end = PXA_GPIO_TO_IRQ(0),
332 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
333 },
334 [2] = {
335 .start = LUBBOCK_IRQ(0),
336 .end = LUBBOCK_IRQ(6),
337 .flags = IORESOURCE_IRQ,
338 },
339 };
340
341 static struct platform_device lubbock_cplds_device = {
342 .name = "pxa_cplds_irqs",
343 .id = -1,
344 .resource = &lubbock_cplds_resources[0],
345 .num_resources = 3,
346 };
347
348
349 static struct platform_device *devices[] __initdata = {
350 &sa1111_device,
351 &smc91x_device,
352 &lubbock_flash_device[0],
353 &lubbock_flash_device[1],
354 &lubbock_cplds_device,
355 };
356
357 static struct pxafb_mode_info sharp_lm8v31_mode = {
358 .pixclock = 270000,
359 .xres = 640,
360 .yres = 480,
361 .bpp = 16,
362 .hsync_len = 1,
363 .left_margin = 3,
364 .right_margin = 3,
365 .vsync_len = 1,
366 .upper_margin = 0,
367 .lower_margin = 0,
368 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
369 .cmap_greyscale = 0,
370 };
371
372 static struct pxafb_mach_info sharp_lm8v31 = {
373 .modes = &sharp_lm8v31_mode,
374 .num_modes = 1,
375 .cmap_inverse = 0,
376 .cmap_static = 0,
377 .lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
378 LCD_AC_BIAS_FREQ(255),
379 };
380
381 #define MMC_POLL_RATE msecs_to_jiffies(1000)
382
383 static irq_handler_t mmc_detect_int;
384 static void *mmc_detect_int_data;
385 static struct timer_list mmc_timer;
386
lubbock_mmc_poll(struct timer_list * unused)387 static void lubbock_mmc_poll(struct timer_list *unused)
388 {
389 unsigned long flags;
390
391 /* clear any previous irq state, then ... */
392 local_irq_save(flags);
393 LUB_IRQ_SET_CLR &= ~(1 << 0);
394 local_irq_restore(flags);
395
396 /* poll until mmc/sd card is removed */
397 if (LUB_IRQ_SET_CLR & (1 << 0))
398 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
399 else {
400 (void) mmc_detect_int(LUBBOCK_SD_IRQ, mmc_detect_int_data);
401 enable_irq(LUBBOCK_SD_IRQ);
402 }
403 }
404
lubbock_detect_int(int irq,void * data)405 static irqreturn_t lubbock_detect_int(int irq, void *data)
406 {
407 /* IRQ is level triggered; disable, and poll for removal */
408 disable_irq(irq);
409 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
410
411 return mmc_detect_int(irq, data);
412 }
413
lubbock_mci_init(struct device * dev,irq_handler_t detect_int,void * data)414 static int lubbock_mci_init(struct device *dev,
415 irq_handler_t detect_int,
416 void *data)
417 {
418 /* detect card insert/eject */
419 mmc_detect_int = detect_int;
420 mmc_detect_int_data = data;
421 timer_setup(&mmc_timer, lubbock_mmc_poll, 0);
422 return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
423 0, "lubbock-sd-detect", data);
424 }
425
lubbock_mci_get_ro(struct device * dev)426 static int lubbock_mci_get_ro(struct device *dev)
427 {
428 return (LUB_MISC_RD & (1 << 2)) != 0;
429 }
430
lubbock_mci_exit(struct device * dev,void * data)431 static void lubbock_mci_exit(struct device *dev, void *data)
432 {
433 free_irq(LUBBOCK_SD_IRQ, data);
434 del_timer_sync(&mmc_timer);
435 }
436
437 static struct pxamci_platform_data lubbock_mci_platform_data = {
438 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
439 .detect_delay_ms = 10,
440 .init = lubbock_mci_init,
441 .get_ro = lubbock_mci_get_ro,
442 .exit = lubbock_mci_exit,
443 .gpio_card_detect = -1,
444 .gpio_card_ro = -1,
445 .gpio_power = -1,
446 };
447
lubbock_irda_transceiver_mode(struct device * dev,int mode)448 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
449 {
450 unsigned long flags;
451
452 local_irq_save(flags);
453 if (mode & IR_SIRMODE) {
454 lubbock_set_misc_wr(BIT(4), 0);
455 } else if (mode & IR_FIRMODE) {
456 lubbock_set_misc_wr(BIT(4), BIT(4));
457 }
458 pxa2xx_transceiver_mode(dev, mode);
459 local_irq_restore(flags);
460 }
461
462 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
463 .gpio_pwdown = -1,
464 .transceiver_cap = IR_SIRMODE | IR_FIRMODE,
465 .transceiver_mode = lubbock_irda_transceiver_mode,
466 };
467
lubbock_init(void)468 static void __init lubbock_init(void)
469 {
470 int flashboot = (LUB_CONF_SWITCHES & 1);
471
472 pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
473
474 lubbock_misc_wr_gc = gpio_reg_init(NULL, (void *)&LUB_MISC_WR,
475 -1, 16, "lubbock", 0, LUB_MISC_WR,
476 NULL, NULL, NULL);
477 if (IS_ERR(lubbock_misc_wr_gc)) {
478 pr_err("Lubbock: unable to register lubbock GPIOs: %ld\n",
479 PTR_ERR(lubbock_misc_wr_gc));
480 lubbock_misc_wr_gc = NULL;
481 }
482
483 pxa_set_ffuart_info(NULL);
484 pxa_set_btuart_info(NULL);
485 pxa_set_stuart_info(NULL);
486
487 lubbock_init_pcmcia();
488
489 clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
490 pxa_set_udc_info(&udc_info);
491 pxa_set_fb_info(NULL, &sharp_lm8v31);
492 pxa_set_mci_info(&lubbock_mci_platform_data);
493 pxa_set_ficp_info(&lubbock_ficp_platform_data);
494 pxa_set_ac97_info(NULL);
495
496 lubbock_flash_data[0].width = lubbock_flash_data[1].width =
497 (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
498 /* Compensate for the nROMBT switch which swaps the flash banks */
499 printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
500 flashboot?"Flash":"ROM", flashboot);
501
502 lubbock_flash_data[flashboot^1].name = "application-flash";
503 lubbock_flash_data[flashboot].name = "boot-rom";
504 (void) platform_add_devices(devices, ARRAY_SIZE(devices));
505
506 pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
507 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
508 }
509
510 static struct map_desc lubbock_io_desc[] __initdata = {
511 { /* CPLD */
512 .virtual = LUBBOCK_FPGA_VIRT,
513 .pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
514 .length = 0x00100000,
515 .type = MT_DEVICE
516 }
517 };
518
lubbock_map_io(void)519 static void __init lubbock_map_io(void)
520 {
521 pxa25x_map_io();
522 iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
523
524 PCFR |= PCFR_OPDE;
525 }
526
527 /*
528 * Driver for the 8 discrete LEDs available for general use:
529 * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
530 * so be sure to not monkey with them here.
531 */
532
533 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
534 struct lubbock_led {
535 struct led_classdev cdev;
536 u8 mask;
537 };
538
539 /*
540 * The triggers lines up below will only be used if the
541 * LED triggers are compiled in.
542 */
543 static const struct {
544 const char *name;
545 const char *trigger;
546 } lubbock_leds[] = {
547 { "lubbock:D28", "default-on", },
548 { "lubbock:D27", "cpu0", },
549 { "lubbock:D26", "heartbeat" },
550 { "lubbock:D25", },
551 { "lubbock:D24", },
552 { "lubbock:D23", },
553 { "lubbock:D22", },
554 { "lubbock:D21", },
555 };
556
lubbock_led_set(struct led_classdev * cdev,enum led_brightness b)557 static void lubbock_led_set(struct led_classdev *cdev,
558 enum led_brightness b)
559 {
560 struct lubbock_led *led = container_of(cdev,
561 struct lubbock_led, cdev);
562 u32 reg = LUB_DISC_BLNK_LED;
563
564 if (b != LED_OFF)
565 reg |= led->mask;
566 else
567 reg &= ~led->mask;
568
569 LUB_DISC_BLNK_LED = reg;
570 }
571
lubbock_led_get(struct led_classdev * cdev)572 static enum led_brightness lubbock_led_get(struct led_classdev *cdev)
573 {
574 struct lubbock_led *led = container_of(cdev,
575 struct lubbock_led, cdev);
576 u32 reg = LUB_DISC_BLNK_LED;
577
578 return (reg & led->mask) ? LED_FULL : LED_OFF;
579 }
580
lubbock_leds_init(void)581 static int __init lubbock_leds_init(void)
582 {
583 int i;
584
585 if (!machine_is_lubbock())
586 return -ENODEV;
587
588 /* All ON */
589 LUB_DISC_BLNK_LED |= 0xff;
590 for (i = 0; i < ARRAY_SIZE(lubbock_leds); i++) {
591 struct lubbock_led *led;
592
593 led = kzalloc(sizeof(*led), GFP_KERNEL);
594 if (!led)
595 break;
596
597 led->cdev.name = lubbock_leds[i].name;
598 led->cdev.brightness_set = lubbock_led_set;
599 led->cdev.brightness_get = lubbock_led_get;
600 led->cdev.default_trigger = lubbock_leds[i].trigger;
601 led->mask = BIT(i);
602
603 if (led_classdev_register(NULL, &led->cdev) < 0) {
604 kfree(led);
605 break;
606 }
607 }
608
609 return 0;
610 }
611
612 /*
613 * Since we may have triggers on any subsystem, defer registration
614 * until after subsystem_init.
615 */
616 fs_initcall(lubbock_leds_init);
617 #endif
618
619 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
620 /* Maintainer: MontaVista Software Inc. */
621 .map_io = lubbock_map_io,
622 .nr_irqs = LUBBOCK_NR_IRQS,
623 .init_irq = pxa25x_init_irq,
624 .handle_irq = pxa25x_handle_irq,
625 .init_time = pxa_timer_init,
626 .init_machine = lubbock_init,
627 .restart = pxa_restart,
628 MACHINE_END
629
