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