Merge branch 'gart/rename' of git://git.kernel.org/pub/scm/linux/kernel/git/joro...
[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 <linux/spi/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 #include <mach/smemc.h>
54
55 #include "generic.h"
56 #include "clock.h"
57 #include "devices.h"
58
59 static unsigned long lubbock_pin_config[] __initdata = {
60         GPIO15_nCS_1,   /* CS1 - Flash */
61         GPIO78_nCS_2,   /* CS2 - Baseboard FGPA */
62         GPIO79_nCS_3,   /* CS3 - SMC ethernet */
63         GPIO80_nCS_4,   /* CS4 - SA1111 */
64
65         /* SSP data pins */
66         GPIO23_SSP1_SCLK,
67         GPIO25_SSP1_TXD,
68         GPIO26_SSP1_RXD,
69
70         /* AC97 */
71         GPIO28_AC97_BITCLK,
72         GPIO29_AC97_SDATA_IN_0,
73         GPIO30_AC97_SDATA_OUT,
74         GPIO31_AC97_SYNC,
75
76         /* LCD - 16bpp DSTN */
77         GPIOxx_LCD_DSTN_16BPP,
78
79         /* BTUART */
80         GPIO42_BTUART_RXD,
81         GPIO43_BTUART_TXD,
82         GPIO44_BTUART_CTS,
83         GPIO45_BTUART_RTS,
84
85         /* PC Card */
86         GPIO48_nPOE,
87         GPIO49_nPWE,
88         GPIO50_nPIOR,
89         GPIO51_nPIOW,
90         GPIO52_nPCE_1,
91         GPIO53_nPCE_2,
92         GPIO54_nPSKTSEL,
93         GPIO55_nPREG,
94         GPIO56_nPWAIT,
95         GPIO57_nIOIS16,
96
97         /* MMC */
98         GPIO6_MMC_CLK,
99         GPIO8_MMC_CS0,
100
101         /* wakeup */
102         GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
103 };
104
105 #define LUB_HEXLED              __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
106 #define LUB_MISC_WR             __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
107
108 void lubbock_set_hexled(uint32_t value)
109 {
110         LUB_HEXLED = value;
111 }
112
113 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
114 {
115         unsigned long flags;
116
117         local_irq_save(flags);
118         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
119         local_irq_restore(flags);
120 }
121 EXPORT_SYMBOL(lubbock_set_misc_wr);
122
123 static unsigned long lubbock_irq_enabled;
124
125 static void lubbock_mask_irq(struct irq_data *d)
126 {
127         int lubbock_irq = (d->irq - LUBBOCK_IRQ(0));
128         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
129 }
130
131 static void lubbock_unmask_irq(struct irq_data *d)
132 {
133         int lubbock_irq = (d->irq - LUBBOCK_IRQ(0));
134         /* the irq can be acknowledged only if deasserted, so it's done here */
135         LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
136         LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
137 }
138
139 static struct irq_chip lubbock_irq_chip = {
140         .name           = "FPGA",
141         .irq_ack        = lubbock_mask_irq,
142         .irq_mask       = lubbock_mask_irq,
143         .irq_unmask     = lubbock_unmask_irq,
144 };
145
146 static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
147 {
148         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
149         do {
150                 /* clear our parent irq */
151                 desc->irq_data.chip->irq_ack(&desc->irq_data);
152                 if (likely(pending)) {
153                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
154                         generic_handle_irq(irq);
155                 }
156                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
157         } while (pending);
158 }
159
160 static void __init lubbock_init_irq(void)
161 {
162         int irq;
163
164         pxa25x_init_irq();
165
166         /* setup extra lubbock irqs */
167         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
168                 irq_set_chip_and_handler(irq, &lubbock_irq_chip,
169                                          handle_level_irq);
170                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
171         }
172
173         irq_set_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
174         irq_set_irq_type(IRQ_GPIO(0), IRQ_TYPE_EDGE_FALLING);
175 }
176
177 #ifdef CONFIG_PM
178
179 static int lubbock_irq_resume(struct sys_device *dev)
180 {
181         LUB_IRQ_MASK_EN = lubbock_irq_enabled;
182         return 0;
183 }
184
185 static struct sysdev_class lubbock_irq_sysclass = {
186         .name = "cpld_irq",
187         .resume = lubbock_irq_resume,
188 };
189
190 static struct sys_device lubbock_irq_device = {
191         .cls = &lubbock_irq_sysclass,
192 };
193
194 static int __init lubbock_irq_device_init(void)
195 {
196         int ret = -ENODEV;
197
198         if (machine_is_lubbock()) {
199                 ret = sysdev_class_register(&lubbock_irq_sysclass);
200                 if (ret == 0)
201                         ret = sysdev_register(&lubbock_irq_device);
202         }
203         return ret;
204 }
205
206 device_initcall(lubbock_irq_device_init);
207
208 #endif
209
210 static int lubbock_udc_is_connected(void)
211 {
212         return (LUB_MISC_RD & (1 << 9)) == 0;
213 }
214
215 static struct pxa2xx_udc_mach_info udc_info __initdata = {
216         .udc_is_connected       = lubbock_udc_is_connected,
217         // no D+ pullup; lubbock can't connect/disconnect in software
218 };
219
220 static struct resource sa1111_resources[] = {
221         [0] = {
222                 .start  = 0x10000000,
223                 .end    = 0x10001fff,
224                 .flags  = IORESOURCE_MEM,
225         },
226         [1] = {
227                 .start  = LUBBOCK_SA1111_IRQ,
228                 .end    = LUBBOCK_SA1111_IRQ,
229                 .flags  = IORESOURCE_IRQ,
230         },
231 };
232
233 static struct sa1111_platform_data sa1111_info = {
234         .irq_base       = LUBBOCK_SA1111_IRQ_BASE,
235 };
236
237 static struct platform_device sa1111_device = {
238         .name           = "sa1111",
239         .id             = -1,
240         .num_resources  = ARRAY_SIZE(sa1111_resources),
241         .resource       = sa1111_resources,
242         .dev            = {
243                 .platform_data  = &sa1111_info,
244         },
245 };
246
247 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
248  * you can select it to replace the ucb1400 by switching the touchscreen cable
249  * (to J5) and poking board registers (as done below).  Else it's only useful
250  * for the temperature sensors.
251  */
252 static struct pxa2xx_spi_master pxa_ssp_master_info = {
253         .num_chipselect = 1,
254 };
255
256 static int lubbock_ads7846_pendown_state(void)
257 {
258         /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
259         return 0;
260 }
261
262 static struct ads7846_platform_data ads_info = {
263         .model                  = 7846,
264         .vref_delay_usecs       = 100,          /* internal, no cap */
265         .get_pendown_state      = lubbock_ads7846_pendown_state,
266         // .x_plate_ohms                = 500,  /* GUESS! */
267         // .y_plate_ohms                = 500,  /* GUESS! */
268 };
269
270 static void ads7846_cs(u32 command)
271 {
272         static const unsigned   TS_nCS = 1 << 11;
273         lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
274 }
275
276 static struct pxa2xx_spi_chip ads_hw = {
277         .tx_threshold           = 1,
278         .rx_threshold           = 2,
279         .cs_control             = ads7846_cs,
280 };
281
282 static struct spi_board_info spi_board_info[] __initdata = { {
283         .modalias       = "ads7846",
284         .platform_data  = &ads_info,
285         .controller_data = &ads_hw,
286         .irq            = LUBBOCK_BB_IRQ,
287         .max_speed_hz   = 120000 /* max sample rate at 3V */
288                                 * 26 /* command + data + overhead */,
289         .bus_num        = 1,
290         .chip_select    = 0,
291 },
292 };
293
294 static struct resource smc91x_resources[] = {
295         [0] = {
296                 .name   = "smc91x-regs",
297                 .start  = 0x0c000c00,
298                 .end    = 0x0c0fffff,
299                 .flags  = IORESOURCE_MEM,
300         },
301         [1] = {
302                 .start  = LUBBOCK_ETH_IRQ,
303                 .end    = LUBBOCK_ETH_IRQ,
304                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
305         },
306         [2] = {
307                 .name   = "smc91x-attrib",
308                 .start  = 0x0e000000,
309                 .end    = 0x0e0fffff,
310                 .flags  = IORESOURCE_MEM,
311         },
312 };
313
314 static struct smc91x_platdata lubbock_smc91x_info = {
315         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
316 };
317
318 static struct platform_device smc91x_device = {
319         .name           = "smc91x",
320         .id             = -1,
321         .num_resources  = ARRAY_SIZE(smc91x_resources),
322         .resource       = smc91x_resources,
323         .dev            = {
324                 .platform_data = &lubbock_smc91x_info,
325         },
326 };
327
328 static struct resource flash_resources[] = {
329         [0] = {
330                 .start  = 0x00000000,
331                 .end    = SZ_64M - 1,
332                 .flags  = IORESOURCE_MEM,
333         },
334         [1] = {
335                 .start  = 0x04000000,
336                 .end    = 0x04000000 + SZ_64M - 1,
337                 .flags  = IORESOURCE_MEM,
338         },
339 };
340
341 static struct mtd_partition lubbock_partitions[] = {
342         {
343                 .name =         "Bootloader",
344                 .size =         0x00040000,
345                 .offset =       0,
346                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
347         },{
348                 .name =         "Kernel",
349                 .size =         0x00100000,
350                 .offset =       0x00040000,
351         },{
352                 .name =         "Filesystem",
353                 .size =         MTDPART_SIZ_FULL,
354                 .offset =       0x00140000
355         }
356 };
357
358 static struct flash_platform_data lubbock_flash_data[2] = {
359         {
360                 .map_name       = "cfi_probe",
361                 .parts          = lubbock_partitions,
362                 .nr_parts       = ARRAY_SIZE(lubbock_partitions),
363         }, {
364                 .map_name       = "cfi_probe",
365                 .parts          = NULL,
366                 .nr_parts       = 0,
367         }
368 };
369
370 static struct platform_device lubbock_flash_device[2] = {
371         {
372                 .name           = "pxa2xx-flash",
373                 .id             = 0,
374                 .dev = {
375                         .platform_data = &lubbock_flash_data[0],
376                 },
377                 .resource = &flash_resources[0],
378                 .num_resources = 1,
379         },
380         {
381                 .name           = "pxa2xx-flash",
382                 .id             = 1,
383                 .dev = {
384                         .platform_data = &lubbock_flash_data[1],
385                 },
386                 .resource = &flash_resources[1],
387                 .num_resources = 1,
388         },
389 };
390
391 static struct platform_device *devices[] __initdata = {
392         &sa1111_device,
393         &smc91x_device,
394         &lubbock_flash_device[0],
395         &lubbock_flash_device[1],
396 };
397
398 static struct pxafb_mode_info sharp_lm8v31_mode = {
399         .pixclock       = 270000,
400         .xres           = 640,
401         .yres           = 480,
402         .bpp            = 16,
403         .hsync_len      = 1,
404         .left_margin    = 3,
405         .right_margin   = 3,
406         .vsync_len      = 1,
407         .upper_margin   = 0,
408         .lower_margin   = 0,
409         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
410         .cmap_greyscale = 0,
411 };
412
413 static struct pxafb_mach_info sharp_lm8v31 = {
414         .modes          = &sharp_lm8v31_mode,
415         .num_modes      = 1,
416         .cmap_inverse   = 0,
417         .cmap_static    = 0,
418         .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
419                           LCD_AC_BIAS_FREQ(255),
420 };
421
422 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
423
424 static void lubbock_mmc_poll(unsigned long);
425 static irq_handler_t mmc_detect_int;
426
427 static struct timer_list mmc_timer = {
428         .function       = lubbock_mmc_poll,
429 };
430
431 static void lubbock_mmc_poll(unsigned long data)
432 {
433         unsigned long flags;
434
435         /* clear any previous irq state, then ... */
436         local_irq_save(flags);
437         LUB_IRQ_SET_CLR &= ~(1 << 0);
438         local_irq_restore(flags);
439
440         /* poll until mmc/sd card is removed */
441         if (LUB_IRQ_SET_CLR & (1 << 0))
442                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
443         else {
444                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
445                 enable_irq(LUBBOCK_SD_IRQ);
446         }
447 }
448
449 static irqreturn_t lubbock_detect_int(int irq, void *data)
450 {
451         /* IRQ is level triggered; disable, and poll for removal */
452         disable_irq(irq);
453         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
454
455         return mmc_detect_int(irq, data);
456 }
457
458 static int lubbock_mci_init(struct device *dev,
459                 irq_handler_t detect_int,
460                 void *data)
461 {
462         /* detect card insert/eject */
463         mmc_detect_int = detect_int;
464         init_timer(&mmc_timer);
465         mmc_timer.data = (unsigned long) data;
466         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
467                         IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data);
468 }
469
470 static int lubbock_mci_get_ro(struct device *dev)
471 {
472         return (LUB_MISC_RD & (1 << 2)) != 0;
473 }
474
475 static void lubbock_mci_exit(struct device *dev, void *data)
476 {
477         free_irq(LUBBOCK_SD_IRQ, data);
478         del_timer_sync(&mmc_timer);
479 }
480
481 static struct pxamci_platform_data lubbock_mci_platform_data = {
482         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
483         .detect_delay_ms        = 10,
484         .init                   = lubbock_mci_init,
485         .get_ro                 = lubbock_mci_get_ro,
486         .exit                   = lubbock_mci_exit,
487         .gpio_card_detect       = -1,
488         .gpio_card_ro           = -1,
489         .gpio_power             = -1,
490 };
491
492 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
493 {
494         unsigned long flags;
495
496         local_irq_save(flags);
497         if (mode & IR_SIRMODE) {
498                 LUB_MISC_WR &= ~(1 << 4);
499         } else if (mode & IR_FIRMODE) {
500                 LUB_MISC_WR |= 1 << 4;
501         }
502         pxa2xx_transceiver_mode(dev, mode);
503         local_irq_restore(flags);
504 }
505
506 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
507         .gpio_pwdown            = -1,
508         .transceiver_cap        = IR_SIRMODE | IR_FIRMODE,
509         .transceiver_mode       = lubbock_irda_transceiver_mode,
510 };
511
512 static void __init lubbock_init(void)
513 {
514         int flashboot = (LUB_CONF_SWITCHES & 1);
515
516         pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
517
518         pxa_set_ffuart_info(NULL);
519         pxa_set_btuart_info(NULL);
520         pxa_set_stuart_info(NULL);
521
522         clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
523         pxa_set_udc_info(&udc_info);
524         pxa_set_fb_info(NULL, &sharp_lm8v31);
525         pxa_set_mci_info(&lubbock_mci_platform_data);
526         pxa_set_ficp_info(&lubbock_ficp_platform_data);
527         pxa_set_ac97_info(NULL);
528
529         lubbock_flash_data[0].width = lubbock_flash_data[1].width =
530                 (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
531         /* Compensate for the nROMBT switch which swaps the flash banks */
532         printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
533                flashboot?"Flash":"ROM", flashboot);
534
535         lubbock_flash_data[flashboot^1].name = "application-flash";
536         lubbock_flash_data[flashboot].name = "boot-rom";
537         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
538
539         pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
540         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
541 }
542
543 static struct map_desc lubbock_io_desc[] __initdata = {
544         {       /* CPLD */
545                 .virtual        =  LUBBOCK_FPGA_VIRT,
546                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
547                 .length         = 0x00100000,
548                 .type           = MT_DEVICE
549         }
550 };
551
552 static void __init lubbock_map_io(void)
553 {
554         pxa25x_map_io();
555         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
556
557         PCFR |= PCFR_OPDE;
558 }
559
560 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
561         /* Maintainer: MontaVista Software Inc. */
562         .map_io         = lubbock_map_io,
563         .nr_irqs        = LUBBOCK_NR_IRQS,
564         .init_irq       = lubbock_init_irq,
565         .timer          = &pxa_timer,
566         .init_machine   = lubbock_init,
567 MACHINE_END