[ARM] pxa: use new pin configuration mechanism for lubbock
[linux-2.6] / 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/pxa2xx-regs.h>
45 #include <asm/arch/mfp-pxa25x.h>
46 #include <asm/arch/lubbock.h>
47 #include <asm/arch/udc.h>
48 #include <asm/arch/irda.h>
49 #include <asm/arch/pxafb.h>
50 #include <asm/arch/mmc.h>
51
52 #include "generic.h"
53 #include "devices.h"
54
55 static unsigned long lubbock_pin_config[] __initdata = {
56         GPIO15_nCS_1,   /* CS1 - Flash */
57         GPIO79_nCS_3,   /* CS3 - SMC ethernet */
58
59         /* SSP data pins */
60         GPIO23_SSP1_SCLK,
61         GPIO25_SSP1_TXD,
62         GPIO26_SSP1_RXD,
63
64         /* BTUART */
65         GPIO42_BTUART_RXD,
66         GPIO43_BTUART_TXD,
67         GPIO44_BTUART_CTS,
68         GPIO45_BTUART_RTS,
69
70         /* PC Card */
71         GPIO48_nPOE,
72         GPIO49_nPWE,
73         GPIO50_nPIOR,
74         GPIO51_nPIOW,
75         GPIO52_nPCE_1,
76         GPIO53_nPCE_2,
77         GPIO54_nPSKTSEL,
78         GPIO55_nPREG,
79         GPIO56_nPWAIT,
80         GPIO57_nIOIS16,
81
82         /* MMC */
83         GPIO6_MMC_CLK,
84         GPIO8_MMC_CS0,
85
86         /* wakeup */
87         GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
88 };
89
90 #define LUB_MISC_WR             __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
91
92 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
93 {
94         unsigned long flags;
95
96         local_irq_save(flags);
97         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
98         local_irq_restore(flags);
99 }
100 EXPORT_SYMBOL(lubbock_set_misc_wr);
101
102 static unsigned long lubbock_irq_enabled;
103
104 static void lubbock_mask_irq(unsigned int irq)
105 {
106         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
107         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
108 }
109
110 static void lubbock_unmask_irq(unsigned int irq)
111 {
112         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
113         /* the irq can be acknowledged only if deasserted, so it's done here */
114         LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
115         LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
116 }
117
118 static struct irq_chip lubbock_irq_chip = {
119         .name           = "FPGA",
120         .ack            = lubbock_mask_irq,
121         .mask           = lubbock_mask_irq,
122         .unmask         = lubbock_unmask_irq,
123 };
124
125 static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
126 {
127         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
128         do {
129                 GEDR(0) = GPIO_bit(0);  /* clear our parent irq */
130                 if (likely(pending)) {
131                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
132                         desc = irq_desc + irq;
133                         desc_handle_irq(irq, desc);
134                 }
135                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
136         } while (pending);
137 }
138
139 static void __init lubbock_init_irq(void)
140 {
141         int irq;
142
143         pxa25x_init_irq();
144
145         /* setup extra lubbock irqs */
146         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
147                 set_irq_chip(irq, &lubbock_irq_chip);
148                 set_irq_handler(irq, handle_level_irq);
149                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
150         }
151
152         set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
153         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
154 }
155
156 #ifdef CONFIG_PM
157
158 static int lubbock_irq_resume(struct sys_device *dev)
159 {
160         LUB_IRQ_MASK_EN = lubbock_irq_enabled;
161         return 0;
162 }
163
164 static struct sysdev_class lubbock_irq_sysclass = {
165         .name = "cpld_irq",
166         .resume = lubbock_irq_resume,
167 };
168
169 static struct sys_device lubbock_irq_device = {
170         .cls = &lubbock_irq_sysclass,
171 };
172
173 static int __init lubbock_irq_device_init(void)
174 {
175         int ret = -ENODEV;
176
177         if (machine_is_lubbock()) {
178                 ret = sysdev_class_register(&lubbock_irq_sysclass);
179                 if (ret == 0)
180                         ret = sysdev_register(&lubbock_irq_device);
181         }
182         return ret;
183 }
184
185 device_initcall(lubbock_irq_device_init);
186
187 #endif
188
189 static int lubbock_udc_is_connected(void)
190 {
191         return (LUB_MISC_RD & (1 << 9)) == 0;
192 }
193
194 static struct pxa2xx_udc_mach_info udc_info __initdata = {
195         .udc_is_connected       = lubbock_udc_is_connected,
196         // no D+ pullup; lubbock can't connect/disconnect in software
197 };
198
199 static struct platform_device lub_audio_device = {
200         .name           = "pxa2xx-ac97",
201         .id             = -1,
202 };
203
204 static struct resource sa1111_resources[] = {
205         [0] = {
206                 .start  = 0x10000000,
207                 .end    = 0x10001fff,
208                 .flags  = IORESOURCE_MEM,
209         },
210         [1] = {
211                 .start  = LUBBOCK_SA1111_IRQ,
212                 .end    = LUBBOCK_SA1111_IRQ,
213                 .flags  = IORESOURCE_IRQ,
214         },
215 };
216
217 static struct platform_device sa1111_device = {
218         .name           = "sa1111",
219         .id             = -1,
220         .num_resources  = ARRAY_SIZE(sa1111_resources),
221         .resource       = sa1111_resources,
222 };
223
224 static struct resource smc91x_resources[] = {
225         [0] = {
226                 .name   = "smc91x-regs",
227                 .start  = 0x0c000c00,
228                 .end    = 0x0c0fffff,
229                 .flags  = IORESOURCE_MEM,
230         },
231         [1] = {
232                 .start  = LUBBOCK_ETH_IRQ,
233                 .end    = LUBBOCK_ETH_IRQ,
234                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
235         },
236         [2] = {
237                 .name   = "smc91x-attrib",
238                 .start  = 0x0e000000,
239                 .end    = 0x0e0fffff,
240                 .flags  = IORESOURCE_MEM,
241         },
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 = 0,
251 };
252
253 static struct platform_device pxa_ssp = {
254         .name           = "pxa2xx-spi",
255         .id             = 1,
256         .dev = {
257                 .platform_data  = &pxa_ssp_master_info,
258         },
259 };
260
261 static int lubbock_ads7846_pendown_state(void)
262 {
263         /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
264         return 0;
265 }
266
267 static struct ads7846_platform_data ads_info = {
268         .model                  = 7846,
269         .vref_delay_usecs       = 100,          /* internal, no cap */
270         .get_pendown_state      = lubbock_ads7846_pendown_state,
271         // .x_plate_ohms                = 500,  /* GUESS! */
272         // .y_plate_ohms                = 500,  /* GUESS! */
273 };
274
275 static void ads7846_cs(u32 command)
276 {
277         static const unsigned   TS_nCS = 1 << 11;
278         lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
279 }
280
281 static struct pxa2xx_spi_chip ads_hw = {
282         .tx_threshold           = 1,
283         .rx_threshold           = 2,
284         .cs_control             = ads7846_cs,
285 };
286
287 static struct spi_board_info spi_board_info[] __initdata = { {
288         .modalias       = "ads7846",
289         .platform_data  = &ads_info,
290         .controller_data = &ads_hw,
291         .irq            = LUBBOCK_BB_IRQ,
292         .max_speed_hz   = 120000 /* max sample rate at 3V */
293                                 * 26 /* command + data + overhead */,
294         .bus_num        = 1,
295         .chip_select    = 0,
296 },
297 };
298
299 static struct platform_device smc91x_device = {
300         .name           = "smc91x",
301         .id             = -1,
302         .num_resources  = ARRAY_SIZE(smc91x_resources),
303         .resource       = smc91x_resources,
304 };
305
306 static struct resource flash_resources[] = {
307         [0] = {
308                 .start  = 0x00000000,
309                 .end    = SZ_64M - 1,
310                 .flags  = IORESOURCE_MEM,
311         },
312         [1] = {
313                 .start  = 0x04000000,
314                 .end    = 0x04000000 + SZ_64M - 1,
315                 .flags  = IORESOURCE_MEM,
316         },
317 };
318
319 static struct mtd_partition lubbock_partitions[] = {
320         {
321                 .name =         "Bootloader",
322                 .size =         0x00040000,
323                 .offset =       0,
324                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
325         },{
326                 .name =         "Kernel",
327                 .size =         0x00100000,
328                 .offset =       0x00040000,
329         },{
330                 .name =         "Filesystem",
331                 .size =         MTDPART_SIZ_FULL,
332                 .offset =       0x00140000
333         }
334 };
335
336 static struct flash_platform_data lubbock_flash_data[2] = {
337         {
338                 .map_name       = "cfi_probe",
339                 .parts          = lubbock_partitions,
340                 .nr_parts       = ARRAY_SIZE(lubbock_partitions),
341         }, {
342                 .map_name       = "cfi_probe",
343                 .parts          = NULL,
344                 .nr_parts       = 0,
345         }
346 };
347
348 static struct platform_device lubbock_flash_device[2] = {
349         {
350                 .name           = "pxa2xx-flash",
351                 .id             = 0,
352                 .dev = {
353                         .platform_data = &lubbock_flash_data[0],
354                 },
355                 .resource = &flash_resources[0],
356                 .num_resources = 1,
357         },
358         {
359                 .name           = "pxa2xx-flash",
360                 .id             = 1,
361                 .dev = {
362                         .platform_data = &lubbock_flash_data[1],
363                 },
364                 .resource = &flash_resources[1],
365                 .num_resources = 1,
366         },
367 };
368
369 static struct platform_device *devices[] __initdata = {
370         &sa1111_device,
371         &lub_audio_device,
372         &smc91x_device,
373         &lubbock_flash_device[0],
374         &lubbock_flash_device[1],
375         &pxa_ssp,
376 };
377
378 static struct pxafb_mode_info sharp_lm8v31_mode = {
379         .pixclock       = 270000,
380         .xres           = 640,
381         .yres           = 480,
382         .bpp            = 16,
383         .hsync_len      = 1,
384         .left_margin    = 3,
385         .right_margin   = 3,
386         .vsync_len      = 1,
387         .upper_margin   = 0,
388         .lower_margin   = 0,
389         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
390         .cmap_greyscale = 0,
391 };
392
393 static struct pxafb_mach_info sharp_lm8v31 = {
394         .modes          = &sharp_lm8v31_mode,
395         .num_modes      = 1,
396         .cmap_inverse   = 0,
397         .cmap_static    = 0,
398         .lccr0          = LCCR0_SDS,
399         .lccr3          = LCCR3_PCP | LCCR3_Acb(255),
400 };
401
402 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
403
404 static void lubbock_mmc_poll(unsigned long);
405 static irq_handler_t mmc_detect_int;
406
407 static struct timer_list mmc_timer = {
408         .function       = lubbock_mmc_poll,
409 };
410
411 static void lubbock_mmc_poll(unsigned long data)
412 {
413         unsigned long flags;
414
415         /* clear any previous irq state, then ... */
416         local_irq_save(flags);
417         LUB_IRQ_SET_CLR &= ~(1 << 0);
418         local_irq_restore(flags);
419
420         /* poll until mmc/sd card is removed */
421         if (LUB_IRQ_SET_CLR & (1 << 0))
422                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
423         else {
424                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
425                 enable_irq(LUBBOCK_SD_IRQ);
426         }
427 }
428
429 static irqreturn_t lubbock_detect_int(int irq, void *data)
430 {
431         /* IRQ is level triggered; disable, and poll for removal */
432         disable_irq(irq);
433         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
434
435         return mmc_detect_int(irq, data);
436 }
437
438 static int lubbock_mci_init(struct device *dev,
439                 irq_handler_t detect_int,
440                 void *data)
441 {
442         /* detect card insert/eject */
443         mmc_detect_int = detect_int;
444         init_timer(&mmc_timer);
445         mmc_timer.data = (unsigned long) data;
446         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
447                         IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data);
448 }
449
450 static int lubbock_mci_get_ro(struct device *dev)
451 {
452         return (LUB_MISC_RD & (1 << 2)) != 0;
453 }
454
455 static void lubbock_mci_exit(struct device *dev, void *data)
456 {
457         free_irq(LUBBOCK_SD_IRQ, data);
458         del_timer_sync(&mmc_timer);
459 }
460
461 static struct pxamci_platform_data lubbock_mci_platform_data = {
462         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
463         .detect_delay   = 1,
464         .init           = lubbock_mci_init,
465         .get_ro         = lubbock_mci_get_ro,
466         .exit           = lubbock_mci_exit,
467 };
468
469 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
470 {
471         unsigned long flags;
472
473         local_irq_save(flags);
474         if (mode & IR_SIRMODE) {
475                 LUB_MISC_WR &= ~(1 << 4);
476         } else if (mode & IR_FIRMODE) {
477                 LUB_MISC_WR |= 1 << 4;
478         }
479         local_irq_restore(flags);
480 }
481
482 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
483         .transceiver_cap  = IR_SIRMODE | IR_FIRMODE,
484         .transceiver_mode = lubbock_irda_transceiver_mode,
485 };
486
487 static void __init lubbock_init(void)
488 {
489         int flashboot = (LUB_CONF_SWITCHES & 1);
490
491         pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
492
493         pxa_set_udc_info(&udc_info);
494         set_pxa_fb_info(&sharp_lm8v31);
495         pxa_set_mci_info(&lubbock_mci_platform_data);
496         pxa_set_ficp_info(&lubbock_ficp_platform_data);
497
498         lubbock_flash_data[0].width = lubbock_flash_data[1].width =
499                 (BOOT_DEF & 1) ? 2 : 4;
500         /* Compensate for the nROMBT switch which swaps the flash banks */
501         printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
502                flashboot?"Flash":"ROM", flashboot);
503
504         lubbock_flash_data[flashboot^1].name = "application-flash";
505         lubbock_flash_data[flashboot].name = "boot-rom";
506         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
507
508         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
509 }
510
511 static struct map_desc lubbock_io_desc[] __initdata = {
512         {       /* CPLD */
513                 .virtual        =  LUBBOCK_FPGA_VIRT,
514                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
515                 .length         = 0x00100000,
516                 .type           = MT_DEVICE
517         }
518 };
519
520 static void __init lubbock_map_io(void)
521 {
522         pxa_map_io();
523         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
524
525         PCFR |= PCFR_OPDE;
526 }
527
528 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
529         /* Maintainer: MontaVista Software Inc. */
530         .phys_io        = 0x40000000,
531         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
532         .map_io         = lubbock_map_io,
533         .init_irq       = lubbock_init_irq,
534         .timer          = &pxa_timer,
535         .init_machine   = lubbock_init,
536 MACHINE_END