[ARM] pxa: make lubbock specific debugging stuffs back into lubbock.c
[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         /* LCD - 16bpp DSTN */
70         GPIO58_LCD_LDD_0,
71         GPIO59_LCD_LDD_1,
72         GPIO60_LCD_LDD_2,
73         GPIO61_LCD_LDD_3,
74         GPIO62_LCD_LDD_4,
75         GPIO63_LCD_LDD_5,
76         GPIO64_LCD_LDD_6,
77         GPIO65_LCD_LDD_7,
78         GPIO66_LCD_LDD_8,
79         GPIO67_LCD_LDD_9,
80         GPIO68_LCD_LDD_10,
81         GPIO69_LCD_LDD_11,
82         GPIO70_LCD_LDD_12,
83         GPIO71_LCD_LDD_13,
84         GPIO72_LCD_LDD_14,
85         GPIO73_LCD_LDD_15,
86         GPIO74_LCD_FCLK,
87         GPIO75_LCD_LCLK,
88         GPIO76_LCD_PCLK,
89
90         /* BTUART */
91         GPIO42_BTUART_RXD,
92         GPIO43_BTUART_TXD,
93         GPIO44_BTUART_CTS,
94         GPIO45_BTUART_RTS,
95
96         /* PC Card */
97         GPIO48_nPOE,
98         GPIO49_nPWE,
99         GPIO50_nPIOR,
100         GPIO51_nPIOW,
101         GPIO52_nPCE_1,
102         GPIO53_nPCE_2,
103         GPIO54_nPSKTSEL,
104         GPIO55_nPREG,
105         GPIO56_nPWAIT,
106         GPIO57_nIOIS16,
107
108         /* MMC */
109         GPIO6_MMC_CLK,
110         GPIO8_MMC_CS0,
111
112         /* wakeup */
113         GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
114 };
115
116 #define LUB_HEXLED              __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
117 #define LUB_MISC_WR             __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
118
119 void lubbock_set_hexled(uint32_t value)
120 {
121         LUB_HEXLED = value;
122 }
123
124 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
125 {
126         unsigned long flags;
127
128         local_irq_save(flags);
129         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
130         local_irq_restore(flags);
131 }
132 EXPORT_SYMBOL(lubbock_set_misc_wr);
133
134 static unsigned long lubbock_irq_enabled;
135
136 static void lubbock_mask_irq(unsigned int irq)
137 {
138         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
139         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
140 }
141
142 static void lubbock_unmask_irq(unsigned int irq)
143 {
144         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
145         /* the irq can be acknowledged only if deasserted, so it's done here */
146         LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
147         LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
148 }
149
150 static struct irq_chip lubbock_irq_chip = {
151         .name           = "FPGA",
152         .ack            = lubbock_mask_irq,
153         .mask           = lubbock_mask_irq,
154         .unmask         = lubbock_unmask_irq,
155 };
156
157 static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
158 {
159         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
160         do {
161                 GEDR(0) = GPIO_bit(0);  /* clear our parent irq */
162                 if (likely(pending)) {
163                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
164                         generic_handle_irq(irq);
165                 }
166                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
167         } while (pending);
168 }
169
170 static void __init lubbock_init_irq(void)
171 {
172         int irq;
173
174         pxa25x_init_irq();
175
176         /* setup extra lubbock irqs */
177         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
178                 set_irq_chip(irq, &lubbock_irq_chip);
179                 set_irq_handler(irq, handle_level_irq);
180                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
181         }
182
183         set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
184         set_irq_type(IRQ_GPIO(0), IRQ_TYPE_EDGE_FALLING);
185 }
186
187 #ifdef CONFIG_PM
188
189 static int lubbock_irq_resume(struct sys_device *dev)
190 {
191         LUB_IRQ_MASK_EN = lubbock_irq_enabled;
192         return 0;
193 }
194
195 static struct sysdev_class lubbock_irq_sysclass = {
196         .name = "cpld_irq",
197         .resume = lubbock_irq_resume,
198 };
199
200 static struct sys_device lubbock_irq_device = {
201         .cls = &lubbock_irq_sysclass,
202 };
203
204 static int __init lubbock_irq_device_init(void)
205 {
206         int ret = -ENODEV;
207
208         if (machine_is_lubbock()) {
209                 ret = sysdev_class_register(&lubbock_irq_sysclass);
210                 if (ret == 0)
211                         ret = sysdev_register(&lubbock_irq_device);
212         }
213         return ret;
214 }
215
216 device_initcall(lubbock_irq_device_init);
217
218 #endif
219
220 static int lubbock_udc_is_connected(void)
221 {
222         return (LUB_MISC_RD & (1 << 9)) == 0;
223 }
224
225 static struct pxa2xx_udc_mach_info udc_info __initdata = {
226         .udc_is_connected       = lubbock_udc_is_connected,
227         // no D+ pullup; lubbock can't connect/disconnect in software
228 };
229
230 static struct resource sa1111_resources[] = {
231         [0] = {
232                 .start  = 0x10000000,
233                 .end    = 0x10001fff,
234                 .flags  = IORESOURCE_MEM,
235         },
236         [1] = {
237                 .start  = LUBBOCK_SA1111_IRQ,
238                 .end    = LUBBOCK_SA1111_IRQ,
239                 .flags  = IORESOURCE_IRQ,
240         },
241 };
242
243 static struct platform_device sa1111_device = {
244         .name           = "sa1111",
245         .id             = -1,
246         .num_resources  = ARRAY_SIZE(sa1111_resources),
247         .resource       = sa1111_resources,
248 };
249
250 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
251  * you can select it to replace the ucb1400 by switching the touchscreen cable
252  * (to J5) and poking board registers (as done below).  Else it's only useful
253  * for the temperature sensors.
254  */
255 static struct pxa2xx_spi_master pxa_ssp_master_info = {
256         .num_chipselect = 1,
257 };
258
259 static int lubbock_ads7846_pendown_state(void)
260 {
261         /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
262         return 0;
263 }
264
265 static struct ads7846_platform_data ads_info = {
266         .model                  = 7846,
267         .vref_delay_usecs       = 100,          /* internal, no cap */
268         .get_pendown_state      = lubbock_ads7846_pendown_state,
269         // .x_plate_ohms                = 500,  /* GUESS! */
270         // .y_plate_ohms                = 500,  /* GUESS! */
271 };
272
273 static void ads7846_cs(u32 command)
274 {
275         static const unsigned   TS_nCS = 1 << 11;
276         lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
277 }
278
279 static struct pxa2xx_spi_chip ads_hw = {
280         .tx_threshold           = 1,
281         .rx_threshold           = 2,
282         .cs_control             = ads7846_cs,
283 };
284
285 static struct spi_board_info spi_board_info[] __initdata = { {
286         .modalias       = "ads7846",
287         .platform_data  = &ads_info,
288         .controller_data = &ads_hw,
289         .irq            = LUBBOCK_BB_IRQ,
290         .max_speed_hz   = 120000 /* max sample rate at 3V */
291                                 * 26 /* command + data + overhead */,
292         .bus_num        = 1,
293         .chip_select    = 0,
294 },
295 };
296
297 static struct resource smc91x_resources[] = {
298         [0] = {
299                 .name   = "smc91x-regs",
300                 .start  = 0x0c000c00,
301                 .end    = 0x0c0fffff,
302                 .flags  = IORESOURCE_MEM,
303         },
304         [1] = {
305                 .start  = LUBBOCK_ETH_IRQ,
306                 .end    = LUBBOCK_ETH_IRQ,
307                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
308         },
309         [2] = {
310                 .name   = "smc91x-attrib",
311                 .start  = 0x0e000000,
312                 .end    = 0x0e0fffff,
313                 .flags  = IORESOURCE_MEM,
314         },
315 };
316
317 static struct smc91x_platdata lubbock_smc91x_info = {
318         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
319 };
320
321 static struct platform_device smc91x_device = {
322         .name           = "smc91x",
323         .id             = -1,
324         .num_resources  = ARRAY_SIZE(smc91x_resources),
325         .resource       = smc91x_resources,
326         .dev            = {
327                 .platform_data = &lubbock_smc91x_info,
328         },
329 };
330
331 static struct resource flash_resources[] = {
332         [0] = {
333                 .start  = 0x00000000,
334                 .end    = SZ_64M - 1,
335                 .flags  = IORESOURCE_MEM,
336         },
337         [1] = {
338                 .start  = 0x04000000,
339                 .end    = 0x04000000 + SZ_64M - 1,
340                 .flags  = IORESOURCE_MEM,
341         },
342 };
343
344 static struct mtd_partition lubbock_partitions[] = {
345         {
346                 .name =         "Bootloader",
347                 .size =         0x00040000,
348                 .offset =       0,
349                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
350         },{
351                 .name =         "Kernel",
352                 .size =         0x00100000,
353                 .offset =       0x00040000,
354         },{
355                 .name =         "Filesystem",
356                 .size =         MTDPART_SIZ_FULL,
357                 .offset =       0x00140000
358         }
359 };
360
361 static struct flash_platform_data lubbock_flash_data[2] = {
362         {
363                 .map_name       = "cfi_probe",
364                 .parts          = lubbock_partitions,
365                 .nr_parts       = ARRAY_SIZE(lubbock_partitions),
366         }, {
367                 .map_name       = "cfi_probe",
368                 .parts          = NULL,
369                 .nr_parts       = 0,
370         }
371 };
372
373 static struct platform_device lubbock_flash_device[2] = {
374         {
375                 .name           = "pxa2xx-flash",
376                 .id             = 0,
377                 .dev = {
378                         .platform_data = &lubbock_flash_data[0],
379                 },
380                 .resource = &flash_resources[0],
381                 .num_resources = 1,
382         },
383         {
384                 .name           = "pxa2xx-flash",
385                 .id             = 1,
386                 .dev = {
387                         .platform_data = &lubbock_flash_data[1],
388                 },
389                 .resource = &flash_resources[1],
390                 .num_resources = 1,
391         },
392 };
393
394 static struct platform_device *devices[] __initdata = {
395         &sa1111_device,
396         &smc91x_device,
397         &lubbock_flash_device[0],
398         &lubbock_flash_device[1],
399 };
400
401 static struct pxafb_mode_info sharp_lm8v31_mode = {
402         .pixclock       = 270000,
403         .xres           = 640,
404         .yres           = 480,
405         .bpp            = 16,
406         .hsync_len      = 1,
407         .left_margin    = 3,
408         .right_margin   = 3,
409         .vsync_len      = 1,
410         .upper_margin   = 0,
411         .lower_margin   = 0,
412         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
413         .cmap_greyscale = 0,
414 };
415
416 static struct pxafb_mach_info sharp_lm8v31 = {
417         .modes          = &sharp_lm8v31_mode,
418         .num_modes      = 1,
419         .cmap_inverse   = 0,
420         .cmap_static    = 0,
421         .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
422                           LCD_AC_BIAS_FREQ(255),
423 };
424
425 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
426
427 static void lubbock_mmc_poll(unsigned long);
428 static irq_handler_t mmc_detect_int;
429
430 static struct timer_list mmc_timer = {
431         .function       = lubbock_mmc_poll,
432 };
433
434 static void lubbock_mmc_poll(unsigned long data)
435 {
436         unsigned long flags;
437
438         /* clear any previous irq state, then ... */
439         local_irq_save(flags);
440         LUB_IRQ_SET_CLR &= ~(1 << 0);
441         local_irq_restore(flags);
442
443         /* poll until mmc/sd card is removed */
444         if (LUB_IRQ_SET_CLR & (1 << 0))
445                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
446         else {
447                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
448                 enable_irq(LUBBOCK_SD_IRQ);
449         }
450 }
451
452 static irqreturn_t lubbock_detect_int(int irq, void *data)
453 {
454         /* IRQ is level triggered; disable, and poll for removal */
455         disable_irq(irq);
456         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
457
458         return mmc_detect_int(irq, data);
459 }
460
461 static int lubbock_mci_init(struct device *dev,
462                 irq_handler_t detect_int,
463                 void *data)
464 {
465         /* detect card insert/eject */
466         mmc_detect_int = detect_int;
467         init_timer(&mmc_timer);
468         mmc_timer.data = (unsigned long) data;
469         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
470                         IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data);
471 }
472
473 static int lubbock_mci_get_ro(struct device *dev)
474 {
475         return (LUB_MISC_RD & (1 << 2)) != 0;
476 }
477
478 static void lubbock_mci_exit(struct device *dev, void *data)
479 {
480         free_irq(LUBBOCK_SD_IRQ, data);
481         del_timer_sync(&mmc_timer);
482 }
483
484 static struct pxamci_platform_data lubbock_mci_platform_data = {
485         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
486         .detect_delay   = 1,
487         .init           = lubbock_mci_init,
488         .get_ro         = lubbock_mci_get_ro,
489         .exit           = lubbock_mci_exit,
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         .transceiver_cap  = IR_SIRMODE | IR_FIRMODE,
508         .transceiver_mode = lubbock_irda_transceiver_mode,
509 };
510
511 static void __init lubbock_init(void)
512 {
513         int flashboot = (LUB_CONF_SWITCHES & 1);
514
515         pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
516
517         clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
518         pxa_set_udc_info(&udc_info);
519         set_pxa_fb_info(&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                 (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         pxa_map_io();
550         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
551
552         PCFR |= PCFR_OPDE;
553 }
554
555 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
556         /* Maintainer: MontaVista Software Inc. */
557         .phys_io        = 0x40000000,
558         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
559         .map_io         = lubbock_map_io,
560         .init_irq       = lubbock_init_irq,
561         .timer          = &pxa_timer,
562         .init_machine   = lubbock_init,
563 MACHINE_END