Merge tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
[pandora-kernel.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/gpio.h>
15 #include <linux/module.h>
16 #include <linux/kernel.h>
17 #include <linux/init.h>
18 #include <linux/io.h>
19 #include <linux/platform_device.h>
20 #include <linux/syscore_ops.h>
21 #include <linux/major.h>
22 #include <linux/fb.h>
23 #include <linux/interrupt.h>
24 #include <linux/mtd/mtd.h>
25 #include <linux/mtd/partitions.h>
26 #include <linux/smc91x.h>
27 #include <linux/slab.h>
28 #include <linux/leds.h>
29
30 #include <linux/spi/spi.h>
31 #include <linux/spi/ads7846.h>
32 #include <linux/spi/pxa2xx_spi.h>
33
34 #include <asm/setup.h>
35 #include <asm/memory.h>
36 #include <asm/mach-types.h>
37 #include <mach/hardware.h>
38 #include <asm/irq.h>
39 #include <asm/sizes.h>
40
41 #include <asm/mach/arch.h>
42 #include <asm/mach/map.h>
43 #include <asm/mach/irq.h>
44 #include <asm/mach/flash.h>
45
46 #include <asm/hardware/sa1111.h>
47
48 #include <mach/pxa25x.h>
49 #include <mach/audio.h>
50 #include <mach/lubbock.h>
51 #include <mach/udc.h>
52 #include <linux/platform_data/irda-pxaficp.h>
53 #include <linux/platform_data/video-pxafb.h>
54 #include <linux/platform_data/mmc-pxamci.h>
55 #include <mach/pm.h>
56 #include <mach/smemc.h>
57
58 #include "generic.h"
59 #include "clock.h"
60 #include "devices.h"
61
62 static unsigned long lubbock_pin_config[] __initdata = {
63         GPIO15_nCS_1,   /* CS1 - Flash */
64         GPIO78_nCS_2,   /* CS2 - Baseboard FGPA */
65         GPIO79_nCS_3,   /* CS3 - SMC ethernet */
66         GPIO80_nCS_4,   /* CS4 - SA1111 */
67
68         /* SSP data pins */
69         GPIO23_SSP1_SCLK,
70         GPIO25_SSP1_TXD,
71         GPIO26_SSP1_RXD,
72
73         /* AC97 */
74         GPIO28_AC97_BITCLK,
75         GPIO29_AC97_SDATA_IN_0,
76         GPIO30_AC97_SDATA_OUT,
77         GPIO31_AC97_SYNC,
78
79         /* LCD - 16bpp DSTN */
80         GPIOxx_LCD_DSTN_16BPP,
81
82         /* BTUART */
83         GPIO42_BTUART_RXD,
84         GPIO43_BTUART_TXD,
85         GPIO44_BTUART_CTS,
86         GPIO45_BTUART_RTS,
87
88         /* PC Card */
89         GPIO48_nPOE,
90         GPIO49_nPWE,
91         GPIO50_nPIOR,
92         GPIO51_nPIOW,
93         GPIO52_nPCE_1,
94         GPIO53_nPCE_2,
95         GPIO54_nPSKTSEL,
96         GPIO55_nPREG,
97         GPIO56_nPWAIT,
98         GPIO57_nIOIS16,
99
100         /* MMC */
101         GPIO6_MMC_CLK,
102         GPIO8_MMC_CS0,
103
104         /* wakeup */
105         GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
106 };
107
108 #define LUB_HEXLED              __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
109 #define LUB_MISC_WR             __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
110
111 void lubbock_set_hexled(uint32_t value)
112 {
113         LUB_HEXLED = value;
114 }
115
116 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
117 {
118         unsigned long flags;
119
120         local_irq_save(flags);
121         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
122         local_irq_restore(flags);
123 }
124 EXPORT_SYMBOL(lubbock_set_misc_wr);
125
126 static unsigned long lubbock_irq_enabled;
127
128 static void lubbock_mask_irq(struct irq_data *d)
129 {
130         int lubbock_irq = (d->irq - LUBBOCK_IRQ(0));
131         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
132 }
133
134 static void lubbock_unmask_irq(struct irq_data *d)
135 {
136         int lubbock_irq = (d->irq - LUBBOCK_IRQ(0));
137         /* the irq can be acknowledged only if deasserted, so it's done here */
138         LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
139         LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
140 }
141
142 static struct irq_chip lubbock_irq_chip = {
143         .name           = "FPGA",
144         .irq_ack        = lubbock_mask_irq,
145         .irq_mask       = lubbock_mask_irq,
146         .irq_unmask     = lubbock_unmask_irq,
147 };
148
149 static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
150 {
151         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
152         do {
153                 /* clear our parent irq */
154                 desc->irq_data.chip->irq_ack(&desc->irq_data);
155                 if (likely(pending)) {
156                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
157                         generic_handle_irq(irq);
158                 }
159                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
160         } while (pending);
161 }
162
163 static void __init lubbock_init_irq(void)
164 {
165         int irq;
166
167         pxa25x_init_irq();
168
169         /* setup extra lubbock irqs */
170         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
171                 irq_set_chip_and_handler(irq, &lubbock_irq_chip,
172                                          handle_level_irq);
173                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
174         }
175
176         irq_set_chained_handler(PXA_GPIO_TO_IRQ(0), lubbock_irq_handler);
177         irq_set_irq_type(PXA_GPIO_TO_IRQ(0), IRQ_TYPE_EDGE_FALLING);
178 }
179
180 #ifdef CONFIG_PM
181
182 static void lubbock_irq_resume(void)
183 {
184         LUB_IRQ_MASK_EN = lubbock_irq_enabled;
185 }
186
187 static struct syscore_ops lubbock_irq_syscore_ops = {
188         .resume = lubbock_irq_resume,
189 };
190
191 static int __init lubbock_irq_device_init(void)
192 {
193         if (machine_is_lubbock()) {
194                 register_syscore_ops(&lubbock_irq_syscore_ops);
195                 return 0;
196         }
197         return -ENODEV;
198 }
199
200 device_initcall(lubbock_irq_device_init);
201
202 #endif
203
204 static int lubbock_udc_is_connected(void)
205 {
206         return (LUB_MISC_RD & (1 << 9)) == 0;
207 }
208
209 static struct pxa2xx_udc_mach_info udc_info __initdata = {
210         .udc_is_connected       = lubbock_udc_is_connected,
211         // no D+ pullup; lubbock can't connect/disconnect in software
212 };
213
214 static struct resource sa1111_resources[] = {
215         [0] = {
216                 .start  = 0x10000000,
217                 .end    = 0x10001fff,
218                 .flags  = IORESOURCE_MEM,
219         },
220         [1] = {
221                 .start  = LUBBOCK_SA1111_IRQ,
222                 .end    = LUBBOCK_SA1111_IRQ,
223                 .flags  = IORESOURCE_IRQ,
224         },
225 };
226
227 static struct sa1111_platform_data sa1111_info = {
228         .irq_base       = LUBBOCK_SA1111_IRQ_BASE,
229         .disable_devs   = SA1111_DEVID_SAC,
230 };
231
232 static struct platform_device sa1111_device = {
233         .name           = "sa1111",
234         .id             = -1,
235         .num_resources  = ARRAY_SIZE(sa1111_resources),
236         .resource       = sa1111_resources,
237         .dev            = {
238                 .platform_data  = &sa1111_info,
239         },
240 };
241
242 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
243  * you can select it to replace the ucb1400 by switching the touchscreen cable
244  * (to J5) and poking board registers (as done below).  Else it's only useful
245  * for the temperature sensors.
246  */
247 static struct pxa2xx_spi_master pxa_ssp_master_info = {
248         .num_chipselect = 1,
249 };
250
251 static int lubbock_ads7846_pendown_state(void)
252 {
253         /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
254         return 0;
255 }
256
257 static struct ads7846_platform_data ads_info = {
258         .model                  = 7846,
259         .vref_delay_usecs       = 100,          /* internal, no cap */
260         .get_pendown_state      = lubbock_ads7846_pendown_state,
261         // .x_plate_ohms                = 500,  /* GUESS! */
262         // .y_plate_ohms                = 500,  /* GUESS! */
263 };
264
265 static void ads7846_cs(u32 command)
266 {
267         static const unsigned   TS_nCS = 1 << 11;
268         lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
269 }
270
271 static struct pxa2xx_spi_chip ads_hw = {
272         .tx_threshold           = 1,
273         .rx_threshold           = 2,
274         .cs_control             = ads7846_cs,
275 };
276
277 static struct spi_board_info spi_board_info[] __initdata = { {
278         .modalias       = "ads7846",
279         .platform_data  = &ads_info,
280         .controller_data = &ads_hw,
281         .irq            = LUBBOCK_BB_IRQ,
282         .max_speed_hz   = 120000 /* max sample rate at 3V */
283                                 * 26 /* command + data + overhead */,
284         .bus_num        = 1,
285         .chip_select    = 0,
286 },
287 };
288
289 static struct resource smc91x_resources[] = {
290         [0] = {
291                 .name   = "smc91x-regs",
292                 .start  = 0x0c000c00,
293                 .end    = 0x0c0fffff,
294                 .flags  = IORESOURCE_MEM,
295         },
296         [1] = {
297                 .start  = LUBBOCK_ETH_IRQ,
298                 .end    = LUBBOCK_ETH_IRQ,
299                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
300         },
301         [2] = {
302                 .name   = "smc91x-attrib",
303                 .start  = 0x0e000000,
304                 .end    = 0x0e0fffff,
305                 .flags  = IORESOURCE_MEM,
306         },
307 };
308
309 static struct smc91x_platdata lubbock_smc91x_info = {
310         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
311 };
312
313 static struct platform_device smc91x_device = {
314         .name           = "smc91x",
315         .id             = -1,
316         .num_resources  = ARRAY_SIZE(smc91x_resources),
317         .resource       = smc91x_resources,
318         .dev            = {
319                 .platform_data = &lubbock_smc91x_info,
320         },
321 };
322
323 static struct resource flash_resources[] = {
324         [0] = {
325                 .start  = 0x00000000,
326                 .end    = SZ_64M - 1,
327                 .flags  = IORESOURCE_MEM,
328         },
329         [1] = {
330                 .start  = 0x04000000,
331                 .end    = 0x04000000 + SZ_64M - 1,
332                 .flags  = IORESOURCE_MEM,
333         },
334 };
335
336 static struct mtd_partition lubbock_partitions[] = {
337         {
338                 .name =         "Bootloader",
339                 .size =         0x00040000,
340                 .offset =       0,
341                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
342         },{
343                 .name =         "Kernel",
344                 .size =         0x00100000,
345                 .offset =       0x00040000,
346         },{
347                 .name =         "Filesystem",
348                 .size =         MTDPART_SIZ_FULL,
349                 .offset =       0x00140000
350         }
351 };
352
353 static struct flash_platform_data lubbock_flash_data[2] = {
354         {
355                 .map_name       = "cfi_probe",
356                 .parts          = lubbock_partitions,
357                 .nr_parts       = ARRAY_SIZE(lubbock_partitions),
358         }, {
359                 .map_name       = "cfi_probe",
360                 .parts          = NULL,
361                 .nr_parts       = 0,
362         }
363 };
364
365 static struct platform_device lubbock_flash_device[2] = {
366         {
367                 .name           = "pxa2xx-flash",
368                 .id             = 0,
369                 .dev = {
370                         .platform_data = &lubbock_flash_data[0],
371                 },
372                 .resource = &flash_resources[0],
373                 .num_resources = 1,
374         },
375         {
376                 .name           = "pxa2xx-flash",
377                 .id             = 1,
378                 .dev = {
379                         .platform_data = &lubbock_flash_data[1],
380                 },
381                 .resource = &flash_resources[1],
382                 .num_resources = 1,
383         },
384 };
385
386 static struct platform_device *devices[] __initdata = {
387         &sa1111_device,
388         &smc91x_device,
389         &lubbock_flash_device[0],
390         &lubbock_flash_device[1],
391 };
392
393 static struct pxafb_mode_info sharp_lm8v31_mode = {
394         .pixclock       = 270000,
395         .xres           = 640,
396         .yres           = 480,
397         .bpp            = 16,
398         .hsync_len      = 1,
399         .left_margin    = 3,
400         .right_margin   = 3,
401         .vsync_len      = 1,
402         .upper_margin   = 0,
403         .lower_margin   = 0,
404         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
405         .cmap_greyscale = 0,
406 };
407
408 static struct pxafb_mach_info sharp_lm8v31 = {
409         .modes          = &sharp_lm8v31_mode,
410         .num_modes      = 1,
411         .cmap_inverse   = 0,
412         .cmap_static    = 0,
413         .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
414                           LCD_AC_BIAS_FREQ(255),
415 };
416
417 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
418
419 static void lubbock_mmc_poll(unsigned long);
420 static irq_handler_t mmc_detect_int;
421
422 static struct timer_list mmc_timer = {
423         .function       = lubbock_mmc_poll,
424 };
425
426 static void lubbock_mmc_poll(unsigned long data)
427 {
428         unsigned long flags;
429
430         /* clear any previous irq state, then ... */
431         local_irq_save(flags);
432         LUB_IRQ_SET_CLR &= ~(1 << 0);
433         local_irq_restore(flags);
434
435         /* poll until mmc/sd card is removed */
436         if (LUB_IRQ_SET_CLR & (1 << 0))
437                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
438         else {
439                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
440                 enable_irq(LUBBOCK_SD_IRQ);
441         }
442 }
443
444 static irqreturn_t lubbock_detect_int(int irq, void *data)
445 {
446         /* IRQ is level triggered; disable, and poll for removal */
447         disable_irq(irq);
448         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
449
450         return mmc_detect_int(irq, data);
451 }
452
453 static int lubbock_mci_init(struct device *dev,
454                 irq_handler_t detect_int,
455                 void *data)
456 {
457         /* detect card insert/eject */
458         mmc_detect_int = detect_int;
459         init_timer(&mmc_timer);
460         mmc_timer.data = (unsigned long) data;
461         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
462                            0, "lubbock-sd-detect", data);
463 }
464
465 static int lubbock_mci_get_ro(struct device *dev)
466 {
467         return (LUB_MISC_RD & (1 << 2)) != 0;
468 }
469
470 static void lubbock_mci_exit(struct device *dev, void *data)
471 {
472         free_irq(LUBBOCK_SD_IRQ, data);
473         del_timer_sync(&mmc_timer);
474 }
475
476 static struct pxamci_platform_data lubbock_mci_platform_data = {
477         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
478         .detect_delay_ms        = 10,
479         .init                   = lubbock_mci_init,
480         .get_ro                 = lubbock_mci_get_ro,
481         .exit                   = lubbock_mci_exit,
482         .gpio_card_detect       = -1,
483         .gpio_card_ro           = -1,
484         .gpio_power             = -1,
485 };
486
487 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
488 {
489         unsigned long flags;
490
491         local_irq_save(flags);
492         if (mode & IR_SIRMODE) {
493                 LUB_MISC_WR &= ~(1 << 4);
494         } else if (mode & IR_FIRMODE) {
495                 LUB_MISC_WR |= 1 << 4;
496         }
497         pxa2xx_transceiver_mode(dev, mode);
498         local_irq_restore(flags);
499 }
500
501 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
502         .gpio_pwdown            = -1,
503         .transceiver_cap        = IR_SIRMODE | IR_FIRMODE,
504         .transceiver_mode       = lubbock_irda_transceiver_mode,
505 };
506
507 static void __init lubbock_init(void)
508 {
509         int flashboot = (LUB_CONF_SWITCHES & 1);
510
511         pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
512
513         pxa_set_ffuart_info(NULL);
514         pxa_set_btuart_info(NULL);
515         pxa_set_stuart_info(NULL);
516
517         clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
518         pxa_set_udc_info(&udc_info);
519         pxa_set_fb_info(NULL, &sharp_lm8v31);
520         pxa_set_mci_info(&lubbock_mci_platform_data);
521         pxa_set_ficp_info(&lubbock_ficp_platform_data);
522         pxa_set_ac97_info(NULL);
523
524         lubbock_flash_data[0].width = lubbock_flash_data[1].width =
525                 (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
526         /* Compensate for the nROMBT switch which swaps the flash banks */
527         printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
528                flashboot?"Flash":"ROM", flashboot);
529
530         lubbock_flash_data[flashboot^1].name = "application-flash";
531         lubbock_flash_data[flashboot].name = "boot-rom";
532         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
533
534         pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
535         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
536 }
537
538 static struct map_desc lubbock_io_desc[] __initdata = {
539         {       /* CPLD */
540                 .virtual        =  LUBBOCK_FPGA_VIRT,
541                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
542                 .length         = 0x00100000,
543                 .type           = MT_DEVICE
544         }
545 };
546
547 static void __init lubbock_map_io(void)
548 {
549         pxa25x_map_io();
550         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
551
552         PCFR |= PCFR_OPDE;
553 }
554
555 /*
556  * Driver for the 8 discrete LEDs available for general use:
557  * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
558  * so be sure to not monkey with them here.
559  */
560
561 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
562 struct lubbock_led {
563         struct led_classdev     cdev;
564         u8                      mask;
565 };
566
567 /*
568  * The triggers lines up below will only be used if the
569  * LED triggers are compiled in.
570  */
571 static const struct {
572         const char *name;
573         const char *trigger;
574 } lubbock_leds[] = {
575         { "lubbock:D28", "default-on", },
576         { "lubbock:D27", "cpu0", },
577         { "lubbock:D26", "heartbeat" },
578         { "lubbock:D25", },
579         { "lubbock:D24", },
580         { "lubbock:D23", },
581         { "lubbock:D22", },
582         { "lubbock:D21", },
583 };
584
585 static void lubbock_led_set(struct led_classdev *cdev,
586                               enum led_brightness b)
587 {
588         struct lubbock_led *led = container_of(cdev,
589                                          struct lubbock_led, cdev);
590         u32 reg = LUB_DISC_BLNK_LED;
591
592         if (b != LED_OFF)
593                 reg |= led->mask;
594         else
595                 reg &= ~led->mask;
596
597         LUB_DISC_BLNK_LED = reg;
598 }
599
600 static enum led_brightness lubbock_led_get(struct led_classdev *cdev)
601 {
602         struct lubbock_led *led = container_of(cdev,
603                                          struct lubbock_led, cdev);
604         u32 reg = LUB_DISC_BLNK_LED;
605
606         return (reg & led->mask) ? LED_FULL : LED_OFF;
607 }
608
609 static int __init lubbock_leds_init(void)
610 {
611         int i;
612
613         if (!machine_is_lubbock())
614                 return -ENODEV;
615
616         /* All ON */
617         LUB_DISC_BLNK_LED |= 0xff;
618         for (i = 0; i < ARRAY_SIZE(lubbock_leds); i++) {
619                 struct lubbock_led *led;
620
621                 led = kzalloc(sizeof(*led), GFP_KERNEL);
622                 if (!led)
623                         break;
624
625                 led->cdev.name = lubbock_leds[i].name;
626                 led->cdev.brightness_set = lubbock_led_set;
627                 led->cdev.brightness_get = lubbock_led_get;
628                 led->cdev.default_trigger = lubbock_leds[i].trigger;
629                 led->mask = BIT(i);
630
631                 if (led_classdev_register(NULL, &led->cdev) < 0) {
632                         kfree(led);
633                         break;
634                 }
635         }
636
637         return 0;
638 }
639
640 /*
641  * Since we may have triggers on any subsystem, defer registration
642  * until after subsystem_init.
643  */
644 fs_initcall(lubbock_leds_init);
645 #endif
646
647 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
648         /* Maintainer: MontaVista Software Inc. */
649         .map_io         = lubbock_map_io,
650         .nr_irqs        = LUBBOCK_NR_IRQS,
651         .init_irq       = lubbock_init_irq,
652         .handle_irq     = pxa25x_handle_irq,
653         .timer          = &pxa_timer,
654         .init_machine   = lubbock_init,
655         .restart        = pxa_restart,
656 MACHINE_END