]>
Commit | Line | Data |
---|---|---|
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 | ||
25 | #include <linux/spi/spi.h> | |
26 | #include <linux/spi/ads7846.h> | |
27 | #include <asm/arch/pxa2xx_spi.h> | |
28 | ||
29 | #include <asm/setup.h> | |
30 | #include <asm/memory.h> | |
31 | #include <asm/mach-types.h> | |
32 | #include <asm/hardware.h> | |
33 | #include <asm/irq.h> | |
34 | #include <asm/sizes.h> | |
35 | ||
36 | #include <asm/mach/arch.h> | |
37 | #include <asm/mach/map.h> | |
38 | #include <asm/mach/irq.h> | |
39 | #include <asm/mach/flash.h> | |
40 | ||
41 | #include <asm/hardware/sa1111.h> | |
42 | ||
43 | #include <asm/arch/pxa-regs.h> | |
44 | #include <asm/arch/lubbock.h> | |
45 | #include <asm/arch/udc.h> | |
46 | #include <asm/arch/irda.h> | |
47 | #include <asm/arch/pxafb.h> | |
48 | #include <asm/arch/mmc.h> | |
49 | ||
50 | #include "generic.h" | |
51 | ||
52 | ||
53 | #define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080) | |
54 | ||
55 | void lubbock_set_misc_wr(unsigned int mask, unsigned int set) | |
56 | { | |
57 | unsigned long flags; | |
58 | ||
59 | local_irq_save(flags); | |
60 | LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask); | |
61 | local_irq_restore(flags); | |
62 | } | |
63 | EXPORT_SYMBOL(lubbock_set_misc_wr); | |
64 | ||
65 | static unsigned long lubbock_irq_enabled; | |
66 | ||
67 | static void lubbock_mask_irq(unsigned int irq) | |
68 | { | |
69 | int lubbock_irq = (irq - LUBBOCK_IRQ(0)); | |
70 | LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq)); | |
71 | } | |
72 | ||
73 | static void lubbock_unmask_irq(unsigned int irq) | |
74 | { | |
75 | int lubbock_irq = (irq - LUBBOCK_IRQ(0)); | |
76 | /* the irq can be acknowledged only if deasserted, so it's done here */ | |
77 | LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq); | |
78 | LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq)); | |
79 | } | |
80 | ||
81 | static struct irq_chip lubbock_irq_chip = { | |
82 | .name = "FPGA", | |
83 | .ack = lubbock_mask_irq, | |
84 | .mask = lubbock_mask_irq, | |
85 | .unmask = lubbock_unmask_irq, | |
86 | }; | |
87 | ||
88 | static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc) | |
89 | { | |
90 | unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled; | |
91 | do { | |
92 | GEDR(0) = GPIO_bit(0); /* clear our parent irq */ | |
93 | if (likely(pending)) { | |
94 | irq = LUBBOCK_IRQ(0) + __ffs(pending); | |
95 | desc = irq_desc + irq; | |
96 | desc_handle_irq(irq, desc); | |
97 | } | |
98 | pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled; | |
99 | } while (pending); | |
100 | } | |
101 | ||
102 | static void __init lubbock_init_irq(void) | |
103 | { | |
104 | int irq; | |
105 | ||
106 | pxa_init_irq(); | |
107 | ||
108 | /* setup extra lubbock irqs */ | |
109 | for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) { | |
110 | set_irq_chip(irq, &lubbock_irq_chip); | |
111 | set_irq_handler(irq, handle_level_irq); | |
112 | set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); | |
113 | } | |
114 | ||
115 | set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler); | |
116 | set_irq_type(IRQ_GPIO(0), IRQT_FALLING); | |
117 | } | |
118 | ||
119 | #ifdef CONFIG_PM | |
120 | ||
121 | static int lubbock_irq_resume(struct sys_device *dev) | |
122 | { | |
123 | LUB_IRQ_MASK_EN = lubbock_irq_enabled; | |
124 | return 0; | |
125 | } | |
126 | ||
127 | static struct sysdev_class lubbock_irq_sysclass = { | |
128 | set_kset_name("cpld_irq"), | |
129 | .resume = lubbock_irq_resume, | |
130 | }; | |
131 | ||
132 | static struct sys_device lubbock_irq_device = { | |
133 | .cls = &lubbock_irq_sysclass, | |
134 | }; | |
135 | ||
136 | static int __init lubbock_irq_device_init(void) | |
137 | { | |
138 | int ret = sysdev_class_register(&lubbock_irq_sysclass); | |
139 | if (ret == 0) | |
140 | ret = sysdev_register(&lubbock_irq_device); | |
141 | return ret; | |
142 | } | |
143 | ||
144 | device_initcall(lubbock_irq_device_init); | |
145 | ||
146 | #endif | |
147 | ||
148 | static int lubbock_udc_is_connected(void) | |
149 | { | |
150 | return (LUB_MISC_RD & (1 << 9)) == 0; | |
151 | } | |
152 | ||
153 | static struct pxa2xx_udc_mach_info udc_info __initdata = { | |
154 | .udc_is_connected = lubbock_udc_is_connected, | |
155 | // no D+ pullup; lubbock can't connect/disconnect in software | |
156 | }; | |
157 | ||
158 | static struct platform_device lub_audio_device = { | |
159 | .name = "pxa2xx-ac97", | |
160 | .id = -1, | |
161 | }; | |
162 | ||
163 | static struct resource sa1111_resources[] = { | |
164 | [0] = { | |
165 | .start = 0x10000000, | |
166 | .end = 0x10001fff, | |
167 | .flags = IORESOURCE_MEM, | |
168 | }, | |
169 | [1] = { | |
170 | .start = LUBBOCK_SA1111_IRQ, | |
171 | .end = LUBBOCK_SA1111_IRQ, | |
172 | .flags = IORESOURCE_IRQ, | |
173 | }, | |
174 | }; | |
175 | ||
176 | static struct platform_device sa1111_device = { | |
177 | .name = "sa1111", | |
178 | .id = -1, | |
179 | .num_resources = ARRAY_SIZE(sa1111_resources), | |
180 | .resource = sa1111_resources, | |
181 | }; | |
182 | ||
183 | static struct resource smc91x_resources[] = { | |
184 | [0] = { | |
185 | .name = "smc91x-regs", | |
186 | .start = 0x0c000c00, | |
187 | .end = 0x0c0fffff, | |
188 | .flags = IORESOURCE_MEM, | |
189 | }, | |
190 | [1] = { | |
191 | .start = LUBBOCK_ETH_IRQ, | |
192 | .end = LUBBOCK_ETH_IRQ, | |
193 | .flags = IORESOURCE_IRQ, | |
194 | }, | |
195 | [2] = { | |
196 | .name = "smc91x-attrib", | |
197 | .start = 0x0e000000, | |
198 | .end = 0x0e0fffff, | |
199 | .flags = IORESOURCE_MEM, | |
200 | }, | |
201 | }; | |
202 | ||
203 | /* ADS7846 is connected through SSP ... and if your board has J5 populated, | |
204 | * you can select it to replace the ucb1400 by switching the touchscreen cable | |
205 | * (to J5) and poking board registers (as done below). Else it's only useful | |
206 | * for the temperature sensors. | |
207 | */ | |
208 | static struct resource pxa_ssp_resources[] = { | |
209 | [0] = { | |
210 | .start = __PREG(SSCR0_P(1)), | |
211 | .end = __PREG(SSCR0_P(1)) + 0x14, | |
212 | .flags = IORESOURCE_MEM, | |
213 | }, | |
214 | [1] = { | |
215 | .start = IRQ_SSP, | |
216 | .end = IRQ_SSP, | |
217 | .flags = IORESOURCE_IRQ, | |
218 | }, | |
219 | }; | |
220 | ||
221 | static struct pxa2xx_spi_master pxa_ssp_master_info = { | |
222 | .ssp_type = PXA25x_SSP, | |
223 | .clock_enable = CKEN_SSP, | |
224 | .num_chipselect = 0, | |
225 | }; | |
226 | ||
227 | static struct platform_device pxa_ssp = { | |
228 | .name = "pxa2xx-spi", | |
229 | .id = 1, | |
230 | .resource = pxa_ssp_resources, | |
231 | .num_resources = ARRAY_SIZE(pxa_ssp_resources), | |
232 | .dev = { | |
233 | .platform_data = &pxa_ssp_master_info, | |
234 | }, | |
235 | }; | |
236 | ||
237 | static int lubbock_ads7846_pendown_state(void) | |
238 | { | |
239 | /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */ | |
240 | return 0; | |
241 | } | |
242 | ||
243 | static struct ads7846_platform_data ads_info = { | |
244 | .model = 7846, | |
245 | .vref_delay_usecs = 100, /* internal, no cap */ | |
246 | .get_pendown_state = lubbock_ads7846_pendown_state, | |
247 | // .x_plate_ohms = 500, /* GUESS! */ | |
248 | // .y_plate_ohms = 500, /* GUESS! */ | |
249 | }; | |
250 | ||
251 | static void ads7846_cs(u32 command) | |
252 | { | |
253 | static const unsigned TS_nCS = 1 << 11; | |
254 | lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS); | |
255 | } | |
256 | ||
257 | static struct pxa2xx_spi_chip ads_hw = { | |
258 | .tx_threshold = 1, | |
259 | .rx_threshold = 2, | |
260 | .cs_control = ads7846_cs, | |
261 | }; | |
262 | ||
263 | static struct spi_board_info spi_board_info[] __initdata = { { | |
264 | .modalias = "ads7846", | |
265 | .platform_data = &ads_info, | |
266 | .controller_data = &ads_hw, | |
267 | .irq = LUBBOCK_BB_IRQ, | |
268 | .max_speed_hz = 120000 /* max sample rate at 3V */ | |
269 | * 26 /* command + data + overhead */, | |
270 | .bus_num = 1, | |
271 | .chip_select = 0, | |
272 | }, | |
273 | }; | |
274 | ||
275 | static struct platform_device smc91x_device = { | |
276 | .name = "smc91x", | |
277 | .id = -1, | |
278 | .num_resources = ARRAY_SIZE(smc91x_resources), | |
279 | .resource = smc91x_resources, | |
280 | }; | |
281 | ||
282 | static struct resource flash_resources[] = { | |
283 | [0] = { | |
284 | .start = 0x00000000, | |
285 | .end = SZ_64M - 1, | |
286 | .flags = IORESOURCE_MEM, | |
287 | }, | |
288 | [1] = { | |
289 | .start = 0x04000000, | |
290 | .end = 0x04000000 + SZ_64M - 1, | |
291 | .flags = IORESOURCE_MEM, | |
292 | }, | |
293 | }; | |
294 | ||
295 | static struct mtd_partition lubbock_partitions[] = { | |
296 | { | |
297 | .name = "Bootloader", | |
298 | .size = 0x00040000, | |
299 | .offset = 0, | |
300 | .mask_flags = MTD_WRITEABLE /* force read-only */ | |
301 | },{ | |
302 | .name = "Kernel", | |
303 | .size = 0x00100000, | |
304 | .offset = 0x00040000, | |
305 | },{ | |
306 | .name = "Filesystem", | |
307 | .size = MTDPART_SIZ_FULL, | |
308 | .offset = 0x00140000 | |
309 | } | |
310 | }; | |
311 | ||
312 | static struct flash_platform_data lubbock_flash_data[2] = { | |
313 | { | |
314 | .map_name = "cfi_probe", | |
315 | .parts = lubbock_partitions, | |
316 | .nr_parts = ARRAY_SIZE(lubbock_partitions), | |
317 | }, { | |
318 | .map_name = "cfi_probe", | |
319 | .parts = NULL, | |
320 | .nr_parts = 0, | |
321 | } | |
322 | }; | |
323 | ||
324 | static struct platform_device lubbock_flash_device[2] = { | |
325 | { | |
326 | .name = "pxa2xx-flash", | |
327 | .id = 0, | |
328 | .dev = { | |
329 | .platform_data = &lubbock_flash_data[0], | |
330 | }, | |
331 | .resource = &flash_resources[0], | |
332 | .num_resources = 1, | |
333 | }, | |
334 | { | |
335 | .name = "pxa2xx-flash", | |
336 | .id = 1, | |
337 | .dev = { | |
338 | .platform_data = &lubbock_flash_data[1], | |
339 | }, | |
340 | .resource = &flash_resources[1], | |
341 | .num_resources = 1, | |
342 | }, | |
343 | }; | |
344 | ||
345 | static struct platform_device *devices[] __initdata = { | |
346 | &sa1111_device, | |
347 | &lub_audio_device, | |
348 | &smc91x_device, | |
349 | &lubbock_flash_device[0], | |
350 | &lubbock_flash_device[1], | |
351 | &pxa_ssp, | |
352 | }; | |
353 | ||
354 | static struct pxafb_mode_info sharp_lm8v31_mode = { | |
355 | .pixclock = 270000, | |
356 | .xres = 640, | |
357 | .yres = 480, | |
358 | .bpp = 16, | |
359 | .hsync_len = 1, | |
360 | .left_margin = 3, | |
361 | .right_margin = 3, | |
362 | .vsync_len = 1, | |
363 | .upper_margin = 0, | |
364 | .lower_margin = 0, | |
365 | .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, | |
366 | .cmap_greyscale = 0, | |
367 | }; | |
368 | ||
369 | static struct pxafb_mach_info sharp_lm8v31 = { | |
370 | .modes = &sharp_lm8v31_mode, | |
371 | .num_modes = 1, | |
372 | .cmap_inverse = 0, | |
373 | .cmap_static = 0, | |
374 | .lccr0 = LCCR0_SDS, | |
375 | .lccr3 = LCCR3_PCP | LCCR3_Acb(255), | |
376 | }; | |
377 | ||
378 | #define MMC_POLL_RATE msecs_to_jiffies(1000) | |
379 | ||
380 | static void lubbock_mmc_poll(unsigned long); | |
381 | static irq_handler_t mmc_detect_int; | |
382 | ||
383 | static struct timer_list mmc_timer = { | |
384 | .function = lubbock_mmc_poll, | |
385 | }; | |
386 | ||
387 | static void lubbock_mmc_poll(unsigned long data) | |
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, (void *)data); | |
401 | enable_irq(LUBBOCK_SD_IRQ); | |
402 | } | |
403 | } | |
404 | ||
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 | ||
414 | static int lubbock_mci_init(struct device *dev, | |
415 | irq_handler_t detect_int, | |
416 | void *data) | |
417 | { | |
418 | /* setup GPIO for PXA25x MMC controller */ | |
419 | pxa_gpio_mode(GPIO6_MMCCLK_MD); | |
420 | pxa_gpio_mode(GPIO8_MMCCS0_MD); | |
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 | IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data); | |
428 | } | |
429 | ||
430 | static int lubbock_mci_get_ro(struct device *dev) | |
431 | { | |
432 | return (LUB_MISC_RD & (1 << 2)) != 0; | |
433 | } | |
434 | ||
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 = 1, | |
444 | .init = lubbock_mci_init, | |
445 | .get_ro = lubbock_mci_get_ro, | |
446 | .exit = lubbock_mci_exit, | |
447 | }; | |
448 | ||
449 | static void lubbock_irda_transceiver_mode(struct device *dev, int mode) | |
450 | { | |
451 | unsigned long flags; | |
452 | ||
453 | local_irq_save(flags); | |
454 | if (mode & IR_SIRMODE) { | |
455 | LUB_MISC_WR &= ~(1 << 4); | |
456 | } else if (mode & IR_FIRMODE) { | |
457 | LUB_MISC_WR |= 1 << 4; | |
458 | } | |
459 | local_irq_restore(flags); | |
460 | } | |
461 | ||
462 | static struct pxaficp_platform_data lubbock_ficp_platform_data = { | |
463 | .transceiver_cap = IR_SIRMODE | IR_FIRMODE, | |
464 | .transceiver_mode = lubbock_irda_transceiver_mode, | |
465 | }; | |
466 | ||
467 | static void __init lubbock_init(void) | |
468 | { | |
469 | int flashboot = (LUB_CONF_SWITCHES & 1); | |
470 | ||
471 | pxa_set_udc_info(&udc_info); | |
472 | set_pxa_fb_info(&sharp_lm8v31); | |
473 | pxa_set_mci_info(&lubbock_mci_platform_data); | |
474 | pxa_set_ficp_info(&lubbock_ficp_platform_data); | |
475 | ||
476 | lubbock_flash_data[0].width = lubbock_flash_data[1].width = | |
477 | (BOOT_DEF & 1) ? 2 : 4; | |
478 | /* Compensate for the nROMBT switch which swaps the flash banks */ | |
479 | printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n", | |
480 | flashboot?"Flash":"ROM", flashboot); | |
481 | ||
482 | lubbock_flash_data[flashboot^1].name = "application-flash"; | |
483 | lubbock_flash_data[flashboot].name = "boot-rom"; | |
484 | (void) platform_add_devices(devices, ARRAY_SIZE(devices)); | |
485 | ||
486 | spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info)); | |
487 | } | |
488 | ||
489 | static struct map_desc lubbock_io_desc[] __initdata = { | |
490 | { /* CPLD */ | |
491 | .virtual = LUBBOCK_FPGA_VIRT, | |
492 | .pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS), | |
493 | .length = 0x00100000, | |
494 | .type = MT_DEVICE | |
495 | } | |
496 | }; | |
497 | ||
498 | static void __init lubbock_map_io(void) | |
499 | { | |
500 | pxa_map_io(); | |
501 | iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc)); | |
502 | ||
503 | /* SSP data pins */ | |
504 | pxa_gpio_mode(GPIO23_SCLK_MD); | |
505 | pxa_gpio_mode(GPIO25_STXD_MD); | |
506 | pxa_gpio_mode(GPIO26_SRXD_MD); | |
507 | ||
508 | /* This enables the BTUART */ | |
509 | pxa_gpio_mode(GPIO42_BTRXD_MD); | |
510 | pxa_gpio_mode(GPIO43_BTTXD_MD); | |
511 | pxa_gpio_mode(GPIO44_BTCTS_MD); | |
512 | pxa_gpio_mode(GPIO45_BTRTS_MD); | |
513 | ||
514 | /* This is for the SMC chip select */ | |
515 | pxa_gpio_mode(GPIO79_nCS_3_MD); | |
516 | ||
517 | /* setup sleep mode values */ | |
518 | PWER = 0x00000002; | |
519 | PFER = 0x00000000; | |
520 | PRER = 0x00000002; | |
521 | PGSR0 = 0x00008000; | |
522 | PGSR1 = 0x003F0202; | |
523 | PGSR2 = 0x0001C000; | |
524 | PCFR |= PCFR_OPDE; | |
525 | } | |
526 | ||
527 | MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)") | |
528 | /* Maintainer: MontaVista Software Inc. */ | |
529 | .phys_io = 0x40000000, | |
530 | .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc, | |
531 | .map_io = lubbock_map_io, | |
532 | .init_irq = lubbock_init_irq, | |
533 | .timer = &pxa_timer, | |
534 | .init_machine = lubbock_init, | |
535 | MACHINE_END |