1499493cd070b4636f5eb7bb7abc971cd35f385c
[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 #include <linux/smc91x.h>
25
26 #include <linux/spi/spi.h>
27 #include <linux/spi/ads7846.h>
28 #include <mach/pxa2xx_spi.h>
29
30 #include <asm/setup.h>
31 #include <asm/memory.h>
32 #include <asm/mach-types.h>
33 #include <mach/hardware.h>
34 #include <asm/irq.h>
35 #include <asm/sizes.h>
36
37 #include <asm/mach/arch.h>
38 #include <asm/mach/map.h>
39 #include <asm/mach/irq.h>
40 #include <asm/mach/flash.h>
41
42 #include <asm/hardware/sa1111.h>
43
44 #include <mach/pxa25x.h>
45 #include <mach/gpio.h>
46 #include <mach/audio.h>
47 #include <mach/lubbock.h>
48 #include <mach/udc.h>
49 #include <mach/irda.h>
50 #include <mach/pxafb.h>
51 #include <mach/mmc.h>
52 #include <mach/pm.h>
53
54 #include "generic.h"
55 #include "clock.h"
56 #include "devices.h"
57
58 static unsigned long lubbock_pin_config[] __initdata = {
59         GPIO15_nCS_1,   /* CS1 - Flash */
60         GPIO78_nCS_2,   /* CS2 - Baseboard FGPA */
61         GPIO79_nCS_3,   /* CS3 - SMC ethernet */
62         GPIO80_nCS_4,   /* CS4 - SA1111 */
63
64         /* SSP data pins */
65         GPIO23_SSP1_SCLK,
66         GPIO25_SSP1_TXD,
67         GPIO26_SSP1_RXD,
68
69         /* AC97 */
70         GPIO28_AC97_BITCLK,
71         GPIO29_AC97_SDATA_IN_0,
72         GPIO30_AC97_SDATA_OUT,
73         GPIO31_AC97_SYNC,
74
75         /* LCD - 16bpp DSTN */
76         GPIOxx_LCD_DSTN_16BPP,
77
78         /* BTUART */
79         GPIO42_BTUART_RXD,
80         GPIO43_BTUART_TXD,
81         GPIO44_BTUART_CTS,
82         GPIO45_BTUART_RTS,
83
84         /* PC Card */
85         GPIO48_nPOE,
86         GPIO49_nPWE,
87         GPIO50_nPIOR,
88         GPIO51_nPIOW,
89         GPIO52_nPCE_1,
90         GPIO53_nPCE_2,
91         GPIO54_nPSKTSEL,
92         GPIO55_nPREG,
93         GPIO56_nPWAIT,
94         GPIO57_nIOIS16,
95
96         /* MMC */
97         GPIO6_MMC_CLK,
98         GPIO8_MMC_CS0,
99
100         /* wakeup */
101         GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
102 };
103
104 #define LUB_HEXLED              __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
105 #define LUB_MISC_WR             __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
106
107 void lubbock_set_hexled(uint32_t value)
108 {
109         LUB_HEXLED = value;
110 }
111
112 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
113 {
114         unsigned long flags;
115
116         local_irq_save(flags);
117         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
118         local_irq_restore(flags);
119 }
120 EXPORT_SYMBOL(lubbock_set_misc_wr);
121
122 static unsigned long lubbock_irq_enabled;
123
124 static void lubbock_mask_irq(unsigned int irq)
125 {
126         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
127         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
128 }
129
130 static void lubbock_unmask_irq(unsigned int irq)
131 {
132         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
133         /* the irq can be acknowledged only if deasserted, so it's done here */
134         LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
135         LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
136 }
137
138 static struct irq_chip lubbock_irq_chip = {
139         .name           = "FPGA",
140         .ack            = lubbock_mask_irq,
141         .mask           = lubbock_mask_irq,
142         .unmask         = lubbock_unmask_irq,
143 };
144
145 static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
146 {
147         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
148         do {
149                 desc->chip->ack(irq);   /* clear our parent irq */
150                 if (likely(pending)) {
151                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
152                         generic_handle_irq(irq);
153                 }
154                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
155         } while (pending);
156 }
157
158 static void __init lubbock_init_irq(void)
159 {
160         int irq;
161
162         pxa25x_init_irq();
163
164         /* setup extra lubbock irqs */
165         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
166                 set_irq_chip(irq, &lubbock_irq_chip);
167                 set_irq_handler(irq, handle_level_irq);
168                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
169         }
170
171         set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
172         set_irq_type(IRQ_GPIO(0), IRQ_TYPE_EDGE_FALLING);
173 }
174
175 #ifdef CONFIG_PM
176
177 static int lubbock_irq_resume(struct sys_device *dev)
178 {
179         LUB_IRQ_MASK_EN = lubbock_irq_enabled;
180         return 0;
181 }
182
183 static struct sysdev_class lubbock_irq_sysclass = {
184         .name = "cpld_irq",
185         .resume = lubbock_irq_resume,
186 };
187
188 static struct sys_device lubbock_irq_device = {
189         .cls = &lubbock_irq_sysclass,
190 };
191
192 static int __init lubbock_irq_device_init(void)
193 {
194         int ret = -ENODEV;
195
196         if (machine_is_lubbock()) {
197                 ret = sysdev_class_register(&lubbock_irq_sysclass);
198                 if (ret == 0)
199                         ret = sysdev_register(&lubbock_irq_device);
200         }
201         return ret;
202 }
203
204 device_initcall(lubbock_irq_device_init);
205
206 #endif
207
208 static int lubbock_udc_is_connected(void)
209 {
210         return (LUB_MISC_RD & (1 << 9)) == 0;
211 }
212
213 static struct pxa2xx_udc_mach_info udc_info __initdata = {
214         .udc_is_connected       = lubbock_udc_is_connected,
215         // no D+ pullup; lubbock can't connect/disconnect in software
216 };
217
218 static struct resource sa1111_resources[] = {
219         [0] = {
220                 .start  = 0x10000000,
221                 .end    = 0x10001fff,
222                 .flags  = IORESOURCE_MEM,
223         },
224         [1] = {
225                 .start  = LUBBOCK_SA1111_IRQ,
226                 .end    = LUBBOCK_SA1111_IRQ,
227                 .flags  = IORESOURCE_IRQ,
228         },
229 };
230
231 static struct sa1111_platform_data sa1111_info = {
232         .irq_base       = LUBBOCK_SA1111_IRQ_BASE,
233 };
234
235 static struct platform_device sa1111_device = {
236         .name           = "sa1111",
237         .id             = -1,
238         .num_resources  = ARRAY_SIZE(sa1111_resources),
239         .resource       = sa1111_resources,
240         .dev            = {
241                 .platform_data  = &sa1111_info,
242         },
243 };
244
245 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
246  * you can select it to replace the ucb1400 by switching the touchscreen cable
247  * (to J5) and poking board registers (as done below).  Else it's only useful
248  * for the temperature sensors.
249  */
250 static struct pxa2xx_spi_master pxa_ssp_master_info = {
251         .num_chipselect = 1,
252 };
253
254 static int lubbock_ads7846_pendown_state(void)
255 {
256         /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
257         return 0;
258 }
259
260 static struct ads7846_platform_data ads_info = {
261         .model                  = 7846,
262         .vref_delay_usecs       = 100,          /* internal, no cap */
263         .get_pendown_state      = lubbock_ads7846_pendown_state,
264         // .x_plate_ohms                = 500,  /* GUESS! */
265         // .y_plate_ohms                = 500,  /* GUESS! */
266 };
267
268 static void ads7846_cs(u32 command)
269 {
270         static const unsigned   TS_nCS = 1 << 11;
271         lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
272 }
273
274 static struct pxa2xx_spi_chip ads_hw = {
275         .tx_threshold           = 1,
276         .rx_threshold           = 2,
277         .cs_control             = ads7846_cs,
278 };
279
280 static struct spi_board_info spi_board_info[] __initdata = { {
281         .modalias       = "ads7846",
282         .platform_data  = &ads_info,
283         .controller_data = &ads_hw,
284         .irq            = LUBBOCK_BB_IRQ,
285         .max_speed_hz   = 120000 /* max sample rate at 3V */
286                                 * 26 /* command + data + overhead */,
287         .bus_num        = 1,
288         .chip_select    = 0,
289 },
290 };
291
292 static struct resource smc91x_resources[] = {
293         [0] = {
294                 .name   = "smc91x-regs",
295                 .start  = 0x0c000c00,
296                 .end    = 0x0c0fffff,
297                 .flags  = IORESOURCE_MEM,
298         },
299         [1] = {
300                 .start  = LUBBOCK_ETH_IRQ,
301                 .end    = LUBBOCK_ETH_IRQ,
302                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
303         },
304         [2] = {
305                 .name   = "smc91x-attrib",
306                 .start  = 0x0e000000,
307                 .end    = 0x0e0fffff,
308                 .flags  = IORESOURCE_MEM,
309         },
310 };
311
312 static struct smc91x_platdata lubbock_smc91x_info = {
313         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
314 };
315
316 static struct platform_device smc91x_device = {
317         .name           = "smc91x",
318         .id             = -1,
319         .num_resources  = ARRAY_SIZE(smc91x_resources),
320         .resource       = smc91x_resources,
321         .dev            = {
322                 .platform_data = &lubbock_smc91x_info,
323         },
324 };
325
326 static struct resource flash_resources[] = {
327         [0] = {
328                 .start  = 0x00000000,
329                 .end    = SZ_64M - 1,
330                 .flags  = IORESOURCE_MEM,
331         },
332         [1] = {
333                 .start  = 0x04000000,
334                 .end    = 0x04000000 + SZ_64M - 1,
335                 .flags  = IORESOURCE_MEM,
336         },
337 };
338
339 static struct mtd_partition lubbock_partitions[] = {
340         {
341                 .name =         "Bootloader",
342                 .size =         0x00040000,
343                 .offset =       0,
344                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
345         },{
346                 .name =         "Kernel",
347                 .size =         0x00100000,
348                 .offset =       0x00040000,
349         },{
350                 .name =         "Filesystem",
351                 .size =         MTDPART_SIZ_FULL,
352                 .offset =       0x00140000
353         }
354 };
355
356 static struct flash_platform_data lubbock_flash_data[2] = {
357         {
358                 .map_name       = "cfi_probe",
359                 .parts          = lubbock_partitions,
360                 .nr_parts       = ARRAY_SIZE(lubbock_partitions),
361         }, {
362                 .map_name       = "cfi_probe",
363                 .parts          = NULL,
364                 .nr_parts       = 0,
365         }
366 };
367
368 static struct platform_device lubbock_flash_device[2] = {
369         {
370                 .name           = "pxa2xx-flash",
371                 .id             = 0,
372                 .dev = {
373                         .platform_data = &lubbock_flash_data[0],
374                 },
375                 .resource = &flash_resources[0],
376                 .num_resources = 1,
377         },
378         {
379                 .name           = "pxa2xx-flash",
380                 .id             = 1,
381                 .dev = {
382                         .platform_data = &lubbock_flash_data[1],
383                 },
384                 .resource = &flash_resources[1],
385                 .num_resources = 1,
386         },
387 };
388
389 static struct platform_device *devices[] __initdata = {
390         &sa1111_device,
391         &smc91x_device,
392         &lubbock_flash_device[0],
393         &lubbock_flash_device[1],
394 };
395
396 static struct pxafb_mode_info sharp_lm8v31_mode = {
397         .pixclock       = 270000,
398         .xres           = 640,
399         .yres           = 480,
400         .bpp            = 16,
401         .hsync_len      = 1,
402         .left_margin    = 3,
403         .right_margin   = 3,
404         .vsync_len      = 1,
405         .upper_margin   = 0,
406         .lower_margin   = 0,
407         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
408         .cmap_greyscale = 0,
409 };
410
411 static struct pxafb_mach_info sharp_lm8v31 = {
412         .modes          = &sharp_lm8v31_mode,
413         .num_modes      = 1,
414         .cmap_inverse   = 0,
415         .cmap_static    = 0,
416         .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
417                           LCD_AC_BIAS_FREQ(255),
418 };
419
420 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
421
422 static void lubbock_mmc_poll(unsigned long);
423 static irq_handler_t mmc_detect_int;
424
425 static struct timer_list mmc_timer = {
426         .function       = lubbock_mmc_poll,
427 };
428
429 static void lubbock_mmc_poll(unsigned long data)
430 {
431         unsigned long flags;
432
433         /* clear any previous irq state, then ... */
434         local_irq_save(flags);
435         LUB_IRQ_SET_CLR &= ~(1 << 0);
436         local_irq_restore(flags);
437
438         /* poll until mmc/sd card is removed */
439         if (LUB_IRQ_SET_CLR & (1 << 0))
440                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
441         else {
442                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
443                 enable_irq(LUBBOCK_SD_IRQ);
444         }
445 }
446
447 static irqreturn_t lubbock_detect_int(int irq, void *data)
448 {
449         /* IRQ is level triggered; disable, and poll for removal */
450         disable_irq(irq);
451         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
452
453         return mmc_detect_int(irq, data);
454 }
455
456 static int lubbock_mci_init(struct device *dev,
457                 irq_handler_t detect_int,
458                 void *data)
459 {
460         /* detect card insert/eject */
461         mmc_detect_int = detect_int;
462         init_timer(&mmc_timer);
463         mmc_timer.data = (unsigned long) data;
464         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
465                         IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data);
466 }
467
468 static int lubbock_mci_get_ro(struct device *dev)
469 {
470         return (LUB_MISC_RD & (1 << 2)) != 0;
471 }
472
473 static void lubbock_mci_exit(struct device *dev, void *data)
474 {
475         free_irq(LUBBOCK_SD_IRQ, data);
476         del_timer_sync(&mmc_timer);
477 }
478
479 static struct pxamci_platform_data lubbock_mci_platform_data = {
480         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
481         .detect_delay_ms        = 10,
482         .init                   = lubbock_mci_init,
483         .get_ro                 = lubbock_mci_get_ro,
484         .exit                   = lubbock_mci_exit,
485         .gpio_card_detect       = -1,
486         .gpio_card_ro           = -1,
487         .gpio_power             = -1,
488 };
489
490 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
491 {
492         unsigned long flags;
493
494         local_irq_save(flags);
495         if (mode & IR_SIRMODE) {
496                 LUB_MISC_WR &= ~(1 << 4);
497         } else if (mode & IR_FIRMODE) {
498                 LUB_MISC_WR |= 1 << 4;
499         }
500         pxa2xx_transceiver_mode(dev, mode);
501         local_irq_restore(flags);
502 }
503
504 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
505         .gpio_pwdown            = -1,
506         .transceiver_cap        = IR_SIRMODE | IR_FIRMODE,
507         .transceiver_mode       = lubbock_irda_transceiver_mode,
508 };
509
510 static void __init lubbock_init(void)
511 {
512         int flashboot = (LUB_CONF_SWITCHES & 1);
513
514         pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
515
516         pxa_set_ffuart_info(NULL);
517         pxa_set_btuart_info(NULL);
518         pxa_set_stuart_info(NULL);
519
520         clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
521         pxa_set_udc_info(&udc_info);
522         set_pxa_fb_info(&sharp_lm8v31);
523         pxa_set_mci_info(&lubbock_mci_platform_data);
524         pxa_set_ficp_info(&lubbock_ficp_platform_data);
525         pxa_set_ac97_info(NULL);
526
527         lubbock_flash_data[0].width = lubbock_flash_data[1].width =
528                 (BOOT_DEF & 1) ? 2 : 4;
529         /* Compensate for the nROMBT switch which swaps the flash banks */
530         printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
531                flashboot?"Flash":"ROM", flashboot);
532
533         lubbock_flash_data[flashboot^1].name = "application-flash";
534         lubbock_flash_data[flashboot].name = "boot-rom";
535         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
536
537         pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
538         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
539 }
540
541 static struct map_desc lubbock_io_desc[] __initdata = {
542         {       /* CPLD */
543                 .virtual        =  LUBBOCK_FPGA_VIRT,
544                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
545                 .length         = 0x00100000,
546                 .type           = MT_DEVICE
547         }
548 };
549
550 static void __init lubbock_map_io(void)
551 {
552         pxa_map_io();
553         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
554
555         PCFR |= PCFR_OPDE;
556 }
557
558 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
559         /* Maintainer: MontaVista Software Inc. */
560         .map_io         = lubbock_map_io,
561         .nr_irqs        = LUBBOCK_NR_IRQS,
562         .init_irq       = lubbock_init_irq,
563         .timer          = &pxa_timer,
564         .init_machine   = lubbock_init,
565 MACHINE_END