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/module.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/sysdev.h>
19 #include <linux/major.h>
20 #include <linux/fb.h>
21 #include <linux/interrupt.h>
22 #include <linux/mtd/mtd.h>
23 #include <linux/mtd/partitions.h>
24 #include <linux/smc91x.h>
25
26 #include <linux/spi/spi.h>
27 #include <linux/spi/ads7846.h>
28 #include <mach/pxa2xx_spi.h>
29
30 #include <asm/setup.h>
31 #include <asm/memory.h>
32 #include <asm/mach-types.h>
33 #include <mach/hardware.h>
34 #include <asm/irq.h>
35 #include <asm/sizes.h>
36
37 #include <asm/mach/arch.h>
38 #include <asm/mach/map.h>
39 #include <asm/mach/irq.h>
40 #include <asm/mach/flash.h>
41
42 #include <asm/hardware/sa1111.h>
43
44 #include <mach/pxa-regs.h>
45 #include <mach/pxa2xx-regs.h>
46 #include <mach/mfp-pxa25x.h>
47 #include <mach/audio.h>
48 #include <mach/lubbock.h>
49 #include <mach/udc.h>
50 #include <mach/irda.h>
51 #include <mach/pxafb.h>
52 #include <mach/mmc.h>
53
54 #include "generic.h"
55 #include "clock.h"
56 #include "devices.h"
57
58 static unsigned long lubbock_pin_config[] __initdata = {
59 GPIO15_nCS_1, /* CS1 - Flash */
60 GPIO78_nCS_2, /* CS2 - Baseboard FGPA */
61 GPIO79_nCS_3, /* CS3 - SMC ethernet */
62 GPIO80_nCS_4, /* CS4 - SA1111 */
63
64 /* SSP data pins */
65 GPIO23_SSP1_SCLK,
66 GPIO25_SSP1_TXD,
67 GPIO26_SSP1_RXD,
68
69 /* LCD - 16bpp DSTN */
70 GPIO58_LCD_LDD_0,
71 GPIO59_LCD_LDD_1,
72 GPIO60_LCD_LDD_2,
73 GPIO61_LCD_LDD_3,
74 GPIO62_LCD_LDD_4,
75 GPIO63_LCD_LDD_5,
76 GPIO64_LCD_LDD_6,
77 GPIO65_LCD_LDD_7,
78 GPIO66_LCD_LDD_8,
79 GPIO67_LCD_LDD_9,
80 GPIO68_LCD_LDD_10,
81 GPIO69_LCD_LDD_11,
82 GPIO70_LCD_LDD_12,
83 GPIO71_LCD_LDD_13,
84 GPIO72_LCD_LDD_14,
85 GPIO73_LCD_LDD_15,
86 GPIO74_LCD_FCLK,
87 GPIO75_LCD_LCLK,
88 GPIO76_LCD_PCLK,
89
90 /* BTUART */
91 GPIO42_BTUART_RXD,
92 GPIO43_BTUART_TXD,
93 GPIO44_BTUART_CTS,
94 GPIO45_BTUART_RTS,
95
96 /* PC Card */
97 GPIO48_nPOE,
98 GPIO49_nPWE,
99 GPIO50_nPIOR,
100 GPIO51_nPIOW,
101 GPIO52_nPCE_1,
102 GPIO53_nPCE_2,
103 GPIO54_nPSKTSEL,
104 GPIO55_nPREG,
105 GPIO56_nPWAIT,
106 GPIO57_nIOIS16,
107
108 /* MMC */
109 GPIO6_MMC_CLK,
110 GPIO8_MMC_CS0,
111
112 /* wakeup */
113 GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
114 };
115
116 #define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
117
lubbock_set_misc_wr(unsigned int mask,unsigned int set)118 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
119 {
120 unsigned long flags;
121
122 local_irq_save(flags);
123 LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
124 local_irq_restore(flags);
125 }
126 EXPORT_SYMBOL(lubbock_set_misc_wr);
127
128 static unsigned long lubbock_irq_enabled;
129
lubbock_mask_irq(unsigned int irq)130 static void lubbock_mask_irq(unsigned int irq)
131 {
132 int lubbock_irq = (irq - LUBBOCK_IRQ(0));
133 LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
134 }
135
lubbock_unmask_irq(unsigned int irq)136 static void lubbock_unmask_irq(unsigned int irq)
137 {
138 int lubbock_irq = (irq - LUBBOCK_IRQ(0));
139 /* the irq can be acknowledged only if deasserted, so it's done here */
140 LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
141 LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
142 }
143
144 static struct irq_chip lubbock_irq_chip = {
145 .name = "FPGA",
146 .ack = lubbock_mask_irq,
147 .mask = lubbock_mask_irq,
148 .unmask = lubbock_unmask_irq,
149 };
150
lubbock_irq_handler(unsigned int irq,struct irq_desc * desc)151 static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
152 {
153 unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
154 do {
155 GEDR(0) = GPIO_bit(0); /* clear our parent irq */
156 if (likely(pending)) {
157 irq = LUBBOCK_IRQ(0) + __ffs(pending);
158 generic_handle_irq(irq);
159 }
160 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
161 } while (pending);
162 }
163
lubbock_init_irq(void)164 static void __init lubbock_init_irq(void)
165 {
166 int irq;
167
168 pxa25x_init_irq();
169
170 /* setup extra lubbock irqs */
171 for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
172 set_irq_chip(irq, &lubbock_irq_chip);
173 set_irq_handler(irq, handle_level_irq);
174 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
175 }
176
177 set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
178 set_irq_type(IRQ_GPIO(0), IRQ_TYPE_EDGE_FALLING);
179 }
180
181 #ifdef CONFIG_PM
182
lubbock_irq_resume(struct sys_device * dev)183 static int lubbock_irq_resume(struct sys_device *dev)
184 {
185 LUB_IRQ_MASK_EN = lubbock_irq_enabled;
186 return 0;
187 }
188
189 static struct sysdev_class lubbock_irq_sysclass = {
190 .name = "cpld_irq",
191 .resume = lubbock_irq_resume,
192 };
193
194 static struct sys_device lubbock_irq_device = {
195 .cls = &lubbock_irq_sysclass,
196 };
197
lubbock_irq_device_init(void)198 static int __init lubbock_irq_device_init(void)
199 {
200 int ret = -ENODEV;
201
202 if (machine_is_lubbock()) {
203 ret = sysdev_class_register(&lubbock_irq_sysclass);
204 if (ret == 0)
205 ret = sysdev_register(&lubbock_irq_device);
206 }
207 return ret;
208 }
209
210 device_initcall(lubbock_irq_device_init);
211
212 #endif
213
lubbock_udc_is_connected(void)214 static int lubbock_udc_is_connected(void)
215 {
216 return (LUB_MISC_RD & (1 << 9)) == 0;
217 }
218
219 static struct pxa2xx_udc_mach_info udc_info __initdata = {
220 .udc_is_connected = lubbock_udc_is_connected,
221 // no D+ pullup; lubbock can't connect/disconnect in software
222 };
223
224 static struct resource sa1111_resources[] = {
225 [0] = {
226 .start = 0x10000000,
227 .end = 0x10001fff,
228 .flags = IORESOURCE_MEM,
229 },
230 [1] = {
231 .start = LUBBOCK_SA1111_IRQ,
232 .end = LUBBOCK_SA1111_IRQ,
233 .flags = IORESOURCE_IRQ,
234 },
235 };
236
237 static struct platform_device sa1111_device = {
238 .name = "sa1111",
239 .id = -1,
240 .num_resources = ARRAY_SIZE(sa1111_resources),
241 .resource = sa1111_resources,
242 };
243
244 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
245 * you can select it to replace the ucb1400 by switching the touchscreen cable
246 * (to J5) and poking board registers (as done below). Else it's only useful
247 * for the temperature sensors.
248 */
249 static struct pxa2xx_spi_master pxa_ssp_master_info = {
250 .num_chipselect = 1,
251 };
252
lubbock_ads7846_pendown_state(void)253 static int lubbock_ads7846_pendown_state(void)
254 {
255 /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
256 return 0;
257 }
258
259 static struct ads7846_platform_data ads_info = {
260 .model = 7846,
261 .vref_delay_usecs = 100, /* internal, no cap */
262 .get_pendown_state = lubbock_ads7846_pendown_state,
263 // .x_plate_ohms = 500, /* GUESS! */
264 // .y_plate_ohms = 500, /* GUESS! */
265 };
266
ads7846_cs(u32 command)267 static void ads7846_cs(u32 command)
268 {
269 static const unsigned TS_nCS = 1 << 11;
270 lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
271 }
272
273 static struct pxa2xx_spi_chip ads_hw = {
274 .tx_threshold = 1,
275 .rx_threshold = 2,
276 .cs_control = ads7846_cs,
277 };
278
279 static struct spi_board_info spi_board_info[] __initdata = { {
280 .modalias = "ads7846",
281 .platform_data = &ads_info,
282 .controller_data = &ads_hw,
283 .irq = LUBBOCK_BB_IRQ,
284 .max_speed_hz = 120000 /* max sample rate at 3V */
285 * 26 /* command + data + overhead */,
286 .bus_num = 1,
287 .chip_select = 0,
288 },
289 };
290
291 static struct resource smc91x_resources[] = {
292 [0] = {
293 .name = "smc91x-regs",
294 .start = 0x0c000c00,
295 .end = 0x0c0fffff,
296 .flags = IORESOURCE_MEM,
297 },
298 [1] = {
299 .start = LUBBOCK_ETH_IRQ,
300 .end = LUBBOCK_ETH_IRQ,
301 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
302 },
303 [2] = {
304 .name = "smc91x-attrib",
305 .start = 0x0e000000,
306 .end = 0x0e0fffff,
307 .flags = IORESOURCE_MEM,
308 },
309 };
310
311 static struct smc91x_platdata lubbock_smc91x_info = {
312 .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
313 };
314
315 static struct platform_device smc91x_device = {
316 .name = "smc91x",
317 .id = -1,
318 .num_resources = ARRAY_SIZE(smc91x_resources),
319 .resource = smc91x_resources,
320 .dev = {
321 .platform_data = &lubbock_smc91x_info,
322 },
323 };
324
325 static struct resource flash_resources[] = {
326 [0] = {
327 .start = 0x00000000,
328 .end = SZ_64M - 1,
329 .flags = IORESOURCE_MEM,
330 },
331 [1] = {
332 .start = 0x04000000,
333 .end = 0x04000000 + SZ_64M - 1,
334 .flags = IORESOURCE_MEM,
335 },
336 };
337
338 static struct mtd_partition lubbock_partitions[] = {
339 {
340 .name = "Bootloader",
341 .size = 0x00040000,
342 .offset = 0,
343 .mask_flags = MTD_WRITEABLE /* force read-only */
344 },{
345 .name = "Kernel",
346 .size = 0x00100000,
347 .offset = 0x00040000,
348 },{
349 .name = "Filesystem",
350 .size = MTDPART_SIZ_FULL,
351 .offset = 0x00140000
352 }
353 };
354
355 static struct flash_platform_data lubbock_flash_data[2] = {
356 {
357 .map_name = "cfi_probe",
358 .parts = lubbock_partitions,
359 .nr_parts = ARRAY_SIZE(lubbock_partitions),
360 }, {
361 .map_name = "cfi_probe",
362 .parts = NULL,
363 .nr_parts = 0,
364 }
365 };
366
367 static struct platform_device lubbock_flash_device[2] = {
368 {
369 .name = "pxa2xx-flash",
370 .id = 0,
371 .dev = {
372 .platform_data = &lubbock_flash_data[0],
373 },
374 .resource = &flash_resources[0],
375 .num_resources = 1,
376 },
377 {
378 .name = "pxa2xx-flash",
379 .id = 1,
380 .dev = {
381 .platform_data = &lubbock_flash_data[1],
382 },
383 .resource = &flash_resources[1],
384 .num_resources = 1,
385 },
386 };
387
388 static struct platform_device *devices[] __initdata = {
389 &sa1111_device,
390 &smc91x_device,
391 &lubbock_flash_device[0],
392 &lubbock_flash_device[1],
393 };
394
395 static struct pxafb_mode_info sharp_lm8v31_mode = {
396 .pixclock = 270000,
397 .xres = 640,
398 .yres = 480,
399 .bpp = 16,
400 .hsync_len = 1,
401 .left_margin = 3,
402 .right_margin = 3,
403 .vsync_len = 1,
404 .upper_margin = 0,
405 .lower_margin = 0,
406 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
407 .cmap_greyscale = 0,
408 };
409
410 static struct pxafb_mach_info sharp_lm8v31 = {
411 .modes = &sharp_lm8v31_mode,
412 .num_modes = 1,
413 .cmap_inverse = 0,
414 .cmap_static = 0,
415 .lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
416 LCD_AC_BIAS_FREQ(255),
417 };
418
419 #define MMC_POLL_RATE msecs_to_jiffies(1000)
420
421 static void lubbock_mmc_poll(unsigned long);
422 static irq_handler_t mmc_detect_int;
423
424 static struct timer_list mmc_timer = {
425 .function = lubbock_mmc_poll,
426 };
427
lubbock_mmc_poll(unsigned long data)428 static void lubbock_mmc_poll(unsigned long data)
429 {
430 unsigned long flags;
431
432 /* clear any previous irq state, then ... */
433 local_irq_save(flags);
434 LUB_IRQ_SET_CLR &= ~(1 << 0);
435 local_irq_restore(flags);
436
437 /* poll until mmc/sd card is removed */
438 if (LUB_IRQ_SET_CLR & (1 << 0))
439 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
440 else {
441 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
442 enable_irq(LUBBOCK_SD_IRQ);
443 }
444 }
445
lubbock_detect_int(int irq,void * data)446 static irqreturn_t lubbock_detect_int(int irq, void *data)
447 {
448 /* IRQ is level triggered; disable, and poll for removal */
449 disable_irq(irq);
450 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
451
452 return mmc_detect_int(irq, data);
453 }
454
lubbock_mci_init(struct device * dev,irq_handler_t detect_int,void * data)455 static int lubbock_mci_init(struct device *dev,
456 irq_handler_t detect_int,
457 void *data)
458 {
459 /* detect card insert/eject */
460 mmc_detect_int = detect_int;
461 init_timer(&mmc_timer);
462 mmc_timer.data = (unsigned long) data;
463 return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
464 IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data);
465 }
466
lubbock_mci_get_ro(struct device * dev)467 static int lubbock_mci_get_ro(struct device *dev)
468 {
469 return (LUB_MISC_RD & (1 << 2)) != 0;
470 }
471
lubbock_mci_exit(struct device * dev,void * data)472 static void lubbock_mci_exit(struct device *dev, void *data)
473 {
474 free_irq(LUBBOCK_SD_IRQ, data);
475 del_timer_sync(&mmc_timer);
476 }
477
478 static struct pxamci_platform_data lubbock_mci_platform_data = {
479 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
480 .detect_delay = 1,
481 .init = lubbock_mci_init,
482 .get_ro = lubbock_mci_get_ro,
483 .exit = lubbock_mci_exit,
484 };
485
lubbock_irda_transceiver_mode(struct device * dev,int mode)486 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
487 {
488 unsigned long flags;
489
490 local_irq_save(flags);
491 if (mode & IR_SIRMODE) {
492 LUB_MISC_WR &= ~(1 << 4);
493 } else if (mode & IR_FIRMODE) {
494 LUB_MISC_WR |= 1 << 4;
495 }
496 pxa2xx_transceiver_mode(dev, mode);
497 local_irq_restore(flags);
498 }
499
500 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
501 .transceiver_cap = IR_SIRMODE | IR_FIRMODE,
502 .transceiver_mode = lubbock_irda_transceiver_mode,
503 };
504
lubbock_init(void)505 static void __init lubbock_init(void)
506 {
507 int flashboot = (LUB_CONF_SWITCHES & 1);
508
509 pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
510
511 clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
512 pxa_set_udc_info(&udc_info);
513 set_pxa_fb_info(&sharp_lm8v31);
514 pxa_set_mci_info(&lubbock_mci_platform_data);
515 pxa_set_ficp_info(&lubbock_ficp_platform_data);
516 pxa_set_ac97_info(NULL);
517
518 lubbock_flash_data[0].width = lubbock_flash_data[1].width =
519 (BOOT_DEF & 1) ? 2 : 4;
520 /* Compensate for the nROMBT switch which swaps the flash banks */
521 printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
522 flashboot?"Flash":"ROM", flashboot);
523
524 lubbock_flash_data[flashboot^1].name = "application-flash";
525 lubbock_flash_data[flashboot].name = "boot-rom";
526 (void) platform_add_devices(devices, ARRAY_SIZE(devices));
527
528 pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
529 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
530 }
531
532 static struct map_desc lubbock_io_desc[] __initdata = {
533 { /* CPLD */
534 .virtual = LUBBOCK_FPGA_VIRT,
535 .pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
536 .length = 0x00100000,
537 .type = MT_DEVICE
538 }
539 };
540
lubbock_map_io(void)541 static void __init lubbock_map_io(void)
542 {
543 pxa_map_io();
544 iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
545
546 PCFR |= PCFR_OPDE;
547 }
548
549 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
550 /* Maintainer: MontaVista Software Inc. */
551 .phys_io = 0x40000000,
552 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
553 .map_io = lubbock_map_io,
554 .init_irq = lubbock_init_irq,
555 .timer = &pxa_timer,
556 .init_machine = lubbock_init,
557 MACHINE_END
558