blob: 1ab26c6914f25f2f13fe91ce55b2bb5eb4d33c3a [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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>
Russell Kingd052d1b2005-10-29 19:07:23 +010017#include <linux/platform_device.h>
Nicolas Pitre22f11c42005-06-16 21:23:56 +010018#include <linux/sysdev.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#include <linux/major.h>
20#include <linux/fb.h>
21#include <linux/interrupt.h>
Todd Poynor74ec71e2005-11-04 17:15:45 +000022#include <linux/mtd/mtd.h>
23#include <linux/mtd/partitions.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070024
David Brownell9df5db82006-06-18 16:39:33 +010025#include <linux/spi/spi.h>
26#include <linux/spi/ads7846.h>
27#include <asm/arch/pxa2xx_spi.h>
28
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#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>
Todd Poynor74ec71e2005-11-04 17:15:45 +000034#include <asm/sizes.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070035
36#include <asm/mach/arch.h>
37#include <asm/mach/map.h>
38#include <asm/mach/irq.h>
Todd Poynor74ec71e2005-11-04 17:15:45 +000039#include <asm/mach/flash.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070040
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>
Nicolas Pitre6f475c02005-10-28 16:39:33 +010046#include <asm/arch/irda.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#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
55void 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}
63EXPORT_SYMBOL(lubbock_set_misc_wr);
64
65static unsigned long lubbock_irq_enabled;
66
67static 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
73static 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
81static struct irqchip lubbock_irq_chip = {
82 .ack = lubbock_mask_irq,
83 .mask = lubbock_mask_irq,
84 .unmask = lubbock_unmask_irq,
85};
86
87static void lubbock_irq_handler(unsigned int irq, struct irqdesc *desc,
88 struct pt_regs *regs)
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;
Russell King664399e2005-09-04 19:45:00 +010096 desc_handle_irq(irq, desc, regs);
Linus Torvalds1da177e2005-04-16 15:20:36 -070097 }
98 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
99 } while (pending);
100}
101
102static 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, do_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
Nicolas Pitre22f11c42005-06-16 21:23:56 +0100119#ifdef CONFIG_PM
120
121static int lubbock_irq_resume(struct sys_device *dev)
122{
123 LUB_IRQ_MASK_EN = lubbock_irq_enabled;
124 return 0;
125}
126
127static struct sysdev_class lubbock_irq_sysclass = {
128 set_kset_name("cpld_irq"),
129 .resume = lubbock_irq_resume,
130};
131
132static struct sys_device lubbock_irq_device = {
133 .cls = &lubbock_irq_sysclass,
134};
135
136static 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
144device_initcall(lubbock_irq_device_init);
145
146#endif
147
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148static int lubbock_udc_is_connected(void)
149{
150 return (LUB_MISC_RD & (1 << 9)) == 0;
151}
152
153static 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
Nicolas Pitre2cef2d52005-09-14 22:42:31 +0100158static struct platform_device lub_audio_device = {
159 .name = "pxa2xx-ac97",
160 .id = -1,
161};
162
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163static 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
176static struct platform_device sa1111_device = {
177 .name = "sa1111",
178 .id = -1,
179 .num_resources = ARRAY_SIZE(sa1111_resources),
180 .resource = sa1111_resources,
181};
182
183static struct resource smc91x_resources[] = {
184 [0] = {
185 .name = "smc91x-regs",
David Brownell85eb2262005-11-01 19:44:30 +0000186 .start = 0x0c000c00,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187 .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
David Brownell9df5db82006-06-18 16:39:33 +0100203/* 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 */
208static 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
221static struct pxa2xx_spi_master pxa_ssp_master_info = {
222 .ssp_type = PXA25x_SSP,
223 .clock_enable = CKEN3_SSP,
224 .num_chipselect = 0,
225};
226
227static 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
237static 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
243static 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
251static 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
257static struct pxa2xx_spi_chip ads_hw = {
258 .tx_threshold = 1,
259 .rx_threshold = 2,
260 .cs_control = ads7846_cs,
261};
262
263static 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275static struct platform_device smc91x_device = {
276 .name = "smc91x",
277 .id = -1,
278 .num_resources = ARRAY_SIZE(smc91x_resources),
279 .resource = smc91x_resources,
280};
281
Todd Poynor74ec71e2005-11-04 17:15:45 +0000282static 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
295static 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
312static 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
324static 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345static struct platform_device *devices[] __initdata = {
346 &sa1111_device,
Nicolas Pitre2cef2d52005-09-14 22:42:31 +0100347 &lub_audio_device,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 &smc91x_device,
Todd Poynor74ec71e2005-11-04 17:15:45 +0000349 &lubbock_flash_device[0],
350 &lubbock_flash_device[1],
David Brownell9df5db82006-06-18 16:39:33 +0100351 &pxa_ssp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352};
353
354static struct pxafb_mach_info sharp_lm8v31 __initdata = {
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 .cmap_inverse = 0,
368 .cmap_static = 0,
369 .lccr0 = LCCR0_SDS,
370 .lccr3 = LCCR3_PCP | LCCR3_Acb(255),
371};
372
David Brownell85eb2262005-11-01 19:44:30 +0000373#define MMC_POLL_RATE msecs_to_jiffies(1000)
374
375static void lubbock_mmc_poll(unsigned long);
376static irqreturn_t (*mmc_detect_int)(int, void *, struct pt_regs *);
377
378static struct timer_list mmc_timer = {
379 .function = lubbock_mmc_poll,
380};
381
382static void lubbock_mmc_poll(unsigned long data)
383{
384 unsigned long flags;
385
386 /* clear any previous irq state, then ... */
387 local_irq_save(flags);
388 LUB_IRQ_SET_CLR &= ~(1 << 0);
389 local_irq_restore(flags);
390
391 /* poll until mmc/sd card is removed */
392 if (LUB_IRQ_SET_CLR & (1 << 0))
393 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
394 else {
395 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data, NULL);
396 enable_irq(LUBBOCK_SD_IRQ);
397 }
398}
399
400static irqreturn_t lubbock_detect_int(int irq, void *data, struct pt_regs *regs)
401{
402 /* IRQ is level triggered; disable, and poll for removal */
403 disable_irq(irq);
404 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
405
406 return mmc_detect_int(irq, data, regs);
407}
408
409static int lubbock_mci_init(struct device *dev,
410 irqreturn_t (*detect_int)(int, void *, struct pt_regs *),
411 void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412{
413 /* setup GPIO for PXA25x MMC controller */
414 pxa_gpio_mode(GPIO6_MMCCLK_MD);
415 pxa_gpio_mode(GPIO8_MMCCS0_MD);
416
David Brownell85eb2262005-11-01 19:44:30 +0000417 /* detect card insert/eject */
418 mmc_detect_int = detect_int;
419 init_timer(&mmc_timer);
420 mmc_timer.data = (unsigned long) data;
421 return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
422 SA_SAMPLE_RANDOM, "lubbock-sd-detect", data);
423}
424
425static int lubbock_mci_get_ro(struct device *dev)
426{
427 return (LUB_MISC_RD & (1 << 2)) != 0;
428}
429
430static void lubbock_mci_exit(struct device *dev, void *data)
431{
432 free_irq(LUBBOCK_SD_IRQ, data);
433 del_timer_sync(&mmc_timer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434}
435
436static struct pxamci_platform_data lubbock_mci_platform_data = {
437 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
David Brownell85eb2262005-11-01 19:44:30 +0000438 .detect_delay = 1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 .init = lubbock_mci_init,
David Brownell85eb2262005-11-01 19:44:30 +0000440 .get_ro = lubbock_mci_get_ro,
441 .exit = lubbock_mci_exit,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442};
443
Nicolas Pitre6f475c02005-10-28 16:39:33 +0100444static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
445{
446 unsigned long flags;
447
448 local_irq_save(flags);
449 if (mode & IR_SIRMODE) {
450 LUB_MISC_WR &= ~(1 << 4);
451 } else if (mode & IR_FIRMODE) {
452 LUB_MISC_WR |= 1 << 4;
453 }
454 local_irq_restore(flags);
455}
456
457static struct pxaficp_platform_data lubbock_ficp_platform_data = {
458 .transceiver_cap = IR_SIRMODE | IR_FIRMODE,
459 .transceiver_mode = lubbock_irda_transceiver_mode,
460};
461
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462static void __init lubbock_init(void)
463{
Todd Poynor74ec71e2005-11-04 17:15:45 +0000464 int flashboot = (LUB_CONF_SWITCHES & 1);
465
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466 pxa_set_udc_info(&udc_info);
467 set_pxa_fb_info(&sharp_lm8v31);
468 pxa_set_mci_info(&lubbock_mci_platform_data);
Nicolas Pitre6f475c02005-10-28 16:39:33 +0100469 pxa_set_ficp_info(&lubbock_ficp_platform_data);
Todd Poynor74ec71e2005-11-04 17:15:45 +0000470
471 lubbock_flash_data[0].width = lubbock_flash_data[1].width =
472 (BOOT_DEF & 1) ? 2 : 4;
473 /* Compensate for the nROMBT switch which swaps the flash banks */
474 printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
475 flashboot?"Flash":"ROM", flashboot);
476
477 lubbock_flash_data[flashboot^1].name = "application-flash";
478 lubbock_flash_data[flashboot].name = "boot-rom";
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 (void) platform_add_devices(devices, ARRAY_SIZE(devices));
David Brownell9df5db82006-06-18 16:39:33 +0100480
481 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482}
483
484static struct map_desc lubbock_io_desc[] __initdata = {
Deepak Saxena6f9182e2005-10-28 15:19:01 +0100485 { /* CPLD */
486 .virtual = LUBBOCK_FPGA_VIRT,
487 .pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
488 .length = 0x00100000,
489 .type = MT_DEVICE
490 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491};
492
493static void __init lubbock_map_io(void)
494{
495 pxa_map_io();
496 iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
497
David Brownell9df5db82006-06-18 16:39:33 +0100498 /* SSP data pins */
499 pxa_gpio_mode(GPIO23_SCLK_MD);
500 pxa_gpio_mode(GPIO25_STXD_MD);
501 pxa_gpio_mode(GPIO26_SRXD_MD);
502
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 /* This enables the BTUART */
504 pxa_gpio_mode(GPIO42_BTRXD_MD);
505 pxa_gpio_mode(GPIO43_BTTXD_MD);
506 pxa_gpio_mode(GPIO44_BTCTS_MD);
507 pxa_gpio_mode(GPIO45_BTRTS_MD);
508
509 /* This is for the SMC chip select */
510 pxa_gpio_mode(GPIO79_nCS_3_MD);
511
512 /* setup sleep mode values */
513 PWER = 0x00000002;
514 PFER = 0x00000000;
515 PRER = 0x00000002;
516 PGSR0 = 0x00008000;
517 PGSR1 = 0x003F0202;
518 PGSR2 = 0x0001C000;
519 PCFR |= PCFR_OPDE;
520}
521
522MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
Russell Kinge9dea0c2005-07-03 17:38:58 +0100523 /* Maintainer: MontaVista Software Inc. */
Russell Kinge9dea0c2005-07-03 17:38:58 +0100524 .phys_io = 0x40000000,
Russell King68070bd2005-07-04 10:44:34 +0100525 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
Russell Kinge9dea0c2005-07-03 17:38:58 +0100526 .map_io = lubbock_map_io,
527 .init_irq = lubbock_init_irq,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 .timer = &pxa_timer,
Russell Kinge9dea0c2005-07-03 17:38:58 +0100529 .init_machine = lubbock_init,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530MACHINE_END