[ARM] 3739/1: genirq updates: irq_chip, add and use irq_chip.name
[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                                 struct pt_regs *regs)
90 {
91         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
92         do {
93                 GEDR(0) = GPIO_bit(0);  /* clear our parent irq */
94                 if (likely(pending)) {
95                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
96                         desc = irq_desc + irq;
97                         desc_handle_irq(irq, desc, regs);
98                 }
99                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
100         } while (pending);
101 }
102
103 static void __init lubbock_init_irq(void)
104 {
105         int irq;
106
107         pxa_init_irq();
108
109         /* setup extra lubbock irqs */
110         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
111                 set_irq_chip(irq, &lubbock_irq_chip);
112                 set_irq_handler(irq, do_level_IRQ);
113                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
114         }
115
116         set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
117         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
118 }
119
120 #ifdef CONFIG_PM
121
122 static int lubbock_irq_resume(struct sys_device *dev)
123 {
124         LUB_IRQ_MASK_EN = lubbock_irq_enabled;
125         return 0;
126 }
127
128 static struct sysdev_class lubbock_irq_sysclass = {
129         set_kset_name("cpld_irq"),
130         .resume = lubbock_irq_resume,
131 };
132
133 static struct sys_device lubbock_irq_device = {
134         .cls = &lubbock_irq_sysclass,
135 };
136
137 static int __init lubbock_irq_device_init(void)
138 {
139         int ret = sysdev_class_register(&lubbock_irq_sysclass);
140         if (ret == 0)
141                 ret = sysdev_register(&lubbock_irq_device);
142         return ret;
143 }
144
145 device_initcall(lubbock_irq_device_init);
146
147 #endif
148
149 static int lubbock_udc_is_connected(void)
150 {
151         return (LUB_MISC_RD & (1 << 9)) == 0;
152 }
153
154 static struct pxa2xx_udc_mach_info udc_info __initdata = {
155         .udc_is_connected       = lubbock_udc_is_connected,
156         // no D+ pullup; lubbock can't connect/disconnect in software
157 };
158
159 static struct platform_device lub_audio_device = {
160         .name           = "pxa2xx-ac97",
161         .id             = -1,
162 };
163
164 static struct resource sa1111_resources[] = {
165         [0] = {
166                 .start  = 0x10000000,
167                 .end    = 0x10001fff,
168                 .flags  = IORESOURCE_MEM,
169         },
170         [1] = {
171                 .start  = LUBBOCK_SA1111_IRQ,
172                 .end    = LUBBOCK_SA1111_IRQ,
173                 .flags  = IORESOURCE_IRQ,
174         },
175 };
176
177 static struct platform_device sa1111_device = {
178         .name           = "sa1111",
179         .id             = -1,
180         .num_resources  = ARRAY_SIZE(sa1111_resources),
181         .resource       = sa1111_resources,
182 };
183
184 static struct resource smc91x_resources[] = {
185         [0] = {
186                 .name   = "smc91x-regs",
187                 .start  = 0x0c000c00,
188                 .end    = 0x0c0fffff,
189                 .flags  = IORESOURCE_MEM,
190         },
191         [1] = {
192                 .start  = LUBBOCK_ETH_IRQ,
193                 .end    = LUBBOCK_ETH_IRQ,
194                 .flags  = IORESOURCE_IRQ,
195         },
196         [2] = {
197                 .name   = "smc91x-attrib",
198                 .start  = 0x0e000000,
199                 .end    = 0x0e0fffff,
200                 .flags  = IORESOURCE_MEM,
201         },
202 };
203
204 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
205  * you can select it to replace the ucb1400 by switching the touchscreen cable
206  * (to J5) and poking board registers (as done below).  Else it's only useful
207  * for the temperature sensors.
208  */
209 static struct resource pxa_ssp_resources[] = {
210         [0] = {
211                 .start  = __PREG(SSCR0_P(1)),
212                 .end    = __PREG(SSCR0_P(1)) + 0x14,
213                 .flags  = IORESOURCE_MEM,
214         },
215         [1] = {
216                 .start  = IRQ_SSP,
217                 .end    = IRQ_SSP,
218                 .flags  = IORESOURCE_IRQ,
219         },
220 };
221
222 static struct pxa2xx_spi_master pxa_ssp_master_info = {
223         .ssp_type       = PXA25x_SSP,
224         .clock_enable   = CKEN3_SSP,
225         .num_chipselect = 0,
226 };
227
228 static struct platform_device pxa_ssp = {
229         .name           = "pxa2xx-spi",
230         .id             = 1,
231         .resource       = pxa_ssp_resources,
232         .num_resources  = ARRAY_SIZE(pxa_ssp_resources),
233         .dev = {
234                 .platform_data  = &pxa_ssp_master_info,
235         },
236 };
237
238 static int lubbock_ads7846_pendown_state(void)
239 {
240         /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
241         return 0;
242 }
243
244 static struct ads7846_platform_data ads_info = {
245         .model                  = 7846,
246         .vref_delay_usecs       = 100,          /* internal, no cap */
247         .get_pendown_state      = lubbock_ads7846_pendown_state,
248         // .x_plate_ohms                = 500,  /* GUESS! */
249         // .y_plate_ohms                = 500,  /* GUESS! */
250 };
251
252 static void ads7846_cs(u32 command)
253 {
254         static const unsigned   TS_nCS = 1 << 11;
255         lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
256 }
257
258 static struct pxa2xx_spi_chip ads_hw = {
259         .tx_threshold           = 1,
260         .rx_threshold           = 2,
261         .cs_control             = ads7846_cs,
262 };
263
264 static struct spi_board_info spi_board_info[] __initdata = { {
265         .modalias       = "ads7846",
266         .platform_data  = &ads_info,
267         .controller_data = &ads_hw,
268         .irq            = LUBBOCK_BB_IRQ,
269         .max_speed_hz   = 120000 /* max sample rate at 3V */
270                                 * 26 /* command + data + overhead */,
271         .bus_num        = 1,
272         .chip_select    = 0,
273 },
274 };
275
276 static struct platform_device smc91x_device = {
277         .name           = "smc91x",
278         .id             = -1,
279         .num_resources  = ARRAY_SIZE(smc91x_resources),
280         .resource       = smc91x_resources,
281 };
282
283 static struct resource flash_resources[] = {
284         [0] = {
285                 .start  = 0x00000000,
286                 .end    = SZ_64M - 1,
287                 .flags  = IORESOURCE_MEM,
288         },
289         [1] = {
290                 .start  = 0x04000000,
291                 .end    = 0x04000000 + SZ_64M - 1,
292                 .flags  = IORESOURCE_MEM,
293         },
294 };
295
296 static struct mtd_partition lubbock_partitions[] = {
297         {
298                 .name =         "Bootloader",
299                 .size =         0x00040000,
300                 .offset =       0,
301                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
302         },{
303                 .name =         "Kernel",
304                 .size =         0x00100000,
305                 .offset =       0x00040000,
306         },{
307                 .name =         "Filesystem",
308                 .size =         MTDPART_SIZ_FULL,
309                 .offset =       0x00140000
310         }
311 };
312
313 static struct flash_platform_data lubbock_flash_data[2] = {
314         {
315                 .map_name       = "cfi_probe",
316                 .parts          = lubbock_partitions,
317                 .nr_parts       = ARRAY_SIZE(lubbock_partitions),
318         }, {
319                 .map_name       = "cfi_probe",
320                 .parts          = NULL,
321                 .nr_parts       = 0,
322         }
323 };
324
325 static struct platform_device lubbock_flash_device[2] = {
326         {
327                 .name           = "pxa2xx-flash",
328                 .id             = 0,
329                 .dev = {
330                         .platform_data = &lubbock_flash_data[0],
331                 },
332                 .resource = &flash_resources[0],
333                 .num_resources = 1,
334         },
335         {
336                 .name           = "pxa2xx-flash",
337                 .id             = 1,
338                 .dev = {
339                         .platform_data = &lubbock_flash_data[1],
340                 },
341                 .resource = &flash_resources[1],
342                 .num_resources = 1,
343         },
344 };
345
346 static struct platform_device *devices[] __initdata = {
347         &sa1111_device,
348         &lub_audio_device,
349         &smc91x_device,
350         &lubbock_flash_device[0],
351         &lubbock_flash_device[1],
352         &pxa_ssp,
353 };
354
355 static struct pxafb_mach_info sharp_lm8v31 __initdata = {
356         .pixclock       = 270000,
357         .xres           = 640,
358         .yres           = 480,
359         .bpp            = 16,
360         .hsync_len      = 1,
361         .left_margin    = 3,
362         .right_margin   = 3,
363         .vsync_len      = 1,
364         .upper_margin   = 0,
365         .lower_margin   = 0,
366         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
367         .cmap_greyscale = 0,
368         .cmap_inverse   = 0,
369         .cmap_static    = 0,
370         .lccr0          = LCCR0_SDS,
371         .lccr3          = LCCR3_PCP | LCCR3_Acb(255),
372 };
373
374 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
375
376 static void lubbock_mmc_poll(unsigned long);
377 static irqreturn_t (*mmc_detect_int)(int, void *, struct pt_regs *);
378
379 static struct timer_list mmc_timer = {
380         .function       = lubbock_mmc_poll,
381 };
382
383 static void lubbock_mmc_poll(unsigned long data)
384 {
385         unsigned long flags;
386
387         /* clear any previous irq state, then ... */
388         local_irq_save(flags);
389         LUB_IRQ_SET_CLR &= ~(1 << 0);
390         local_irq_restore(flags);
391
392         /* poll until mmc/sd card is removed */
393         if (LUB_IRQ_SET_CLR & (1 << 0))
394                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
395         else {
396                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data, NULL);
397                 enable_irq(LUBBOCK_SD_IRQ);
398         }
399 }
400
401 static irqreturn_t lubbock_detect_int(int irq, void *data, struct pt_regs *regs)
402 {
403         /* IRQ is level triggered; disable, and poll for removal */
404         disable_irq(irq);
405         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
406
407         return mmc_detect_int(irq, data, regs);
408 }
409
410 static int lubbock_mci_init(struct device *dev,
411                 irqreturn_t (*detect_int)(int, void *, struct pt_regs *),
412                 void *data)
413 {
414         /* setup GPIO for PXA25x MMC controller */
415         pxa_gpio_mode(GPIO6_MMCCLK_MD);
416         pxa_gpio_mode(GPIO8_MMCCS0_MD);
417
418         /* detect card insert/eject */
419         mmc_detect_int = detect_int;
420         init_timer(&mmc_timer);
421         mmc_timer.data = (unsigned long) data;
422         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
423                         IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data);
424 }
425
426 static int lubbock_mci_get_ro(struct device *dev)
427 {
428         return (LUB_MISC_RD & (1 << 2)) != 0;
429 }
430
431 static void lubbock_mci_exit(struct device *dev, void *data)
432 {
433         free_irq(LUBBOCK_SD_IRQ, data);
434         del_timer_sync(&mmc_timer);
435 }
436
437 static struct pxamci_platform_data lubbock_mci_platform_data = {
438         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
439         .detect_delay   = 1,
440         .init           = lubbock_mci_init,
441         .get_ro         = lubbock_mci_get_ro,
442         .exit           = lubbock_mci_exit,
443 };
444
445 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
446 {
447         unsigned long flags;
448
449         local_irq_save(flags);
450         if (mode & IR_SIRMODE) {
451                 LUB_MISC_WR &= ~(1 << 4);
452         } else if (mode & IR_FIRMODE) {
453                 LUB_MISC_WR |= 1 << 4;
454         }
455         local_irq_restore(flags);
456 }
457
458 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
459         .transceiver_cap  = IR_SIRMODE | IR_FIRMODE,
460         .transceiver_mode = lubbock_irda_transceiver_mode,
461 };
462
463 static void __init lubbock_init(void)
464 {
465         int flashboot = (LUB_CONF_SWITCHES & 1);
466
467         pxa_set_udc_info(&udc_info);
468         set_pxa_fb_info(&sharp_lm8v31);
469         pxa_set_mci_info(&lubbock_mci_platform_data);
470         pxa_set_ficp_info(&lubbock_ficp_platform_data);
471
472         lubbock_flash_data[0].width = lubbock_flash_data[1].width =
473                 (BOOT_DEF & 1) ? 2 : 4;
474         /* Compensate for the nROMBT switch which swaps the flash banks */
475         printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
476                flashboot?"Flash":"ROM", flashboot);
477
478         lubbock_flash_data[flashboot^1].name = "application-flash";
479         lubbock_flash_data[flashboot].name = "boot-rom";
480         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
481
482         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
483 }
484
485 static struct map_desc lubbock_io_desc[] __initdata = {
486         {       /* CPLD */
487                 .virtual        =  LUBBOCK_FPGA_VIRT,
488                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
489                 .length         = 0x00100000,
490                 .type           = MT_DEVICE
491         }
492 };
493
494 static void __init lubbock_map_io(void)
495 {
496         pxa_map_io();
497         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
498
499         /* SSP data pins */
500         pxa_gpio_mode(GPIO23_SCLK_MD);
501         pxa_gpio_mode(GPIO25_STXD_MD);
502         pxa_gpio_mode(GPIO26_SRXD_MD);
503
504         /* This enables the BTUART */
505         pxa_gpio_mode(GPIO42_BTRXD_MD);
506         pxa_gpio_mode(GPIO43_BTTXD_MD);
507         pxa_gpio_mode(GPIO44_BTCTS_MD);
508         pxa_gpio_mode(GPIO45_BTRTS_MD);
509
510         /* This is for the SMC chip select */
511         pxa_gpio_mode(GPIO79_nCS_3_MD);
512
513         /* setup sleep mode values */
514         PWER  = 0x00000002;
515         PFER  = 0x00000000;
516         PRER  = 0x00000002;
517         PGSR0 = 0x00008000;
518         PGSR1 = 0x003F0202;
519         PGSR2 = 0x0001C000;
520         PCFR |= PCFR_OPDE;
521 }
522
523 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
524         /* Maintainer: MontaVista Software Inc. */
525         .phys_io        = 0x40000000,
526         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
527         .map_io         = lubbock_map_io,
528         .init_irq       = lubbock_init_irq,
529         .timer          = &pxa_timer,
530         .init_machine   = lubbock_init,
531 MACHINE_END