Initial blind fixup for arm for irq changes
[linux-2.6.git] / arch / arm / mach-pxa / lubbock.c
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 irqdesc *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, 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
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   = CKEN3_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 irqreturn_t (*mmc_detect_int)(int, void *);
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, NULL);
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                 irqreturn_t (*detect_int)(int, void *),
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