Merge branches 'release', 'asus', 'sony-laptop' and 'thinkpad' into release
[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/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/lubbock.h>
46 #include <asm/arch/udc.h>
47 #include <asm/arch/irda.h>
48 #include <asm/arch/pxafb.h>
49 #include <asm/arch/mmc.h>
50
51 #include "generic.h"
52 #include "devices.h"
53
54
55 #define LUB_MISC_WR             __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
56
57 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
58 {
59         unsigned long flags;
60
61         local_irq_save(flags);
62         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
63         local_irq_restore(flags);
64 }
65 EXPORT_SYMBOL(lubbock_set_misc_wr);
66
67 static unsigned long lubbock_irq_enabled;
68
69 static void lubbock_mask_irq(unsigned int irq)
70 {
71         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
72         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
73 }
74
75 static void lubbock_unmask_irq(unsigned int irq)
76 {
77         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
78         /* the irq can be acknowledged only if deasserted, so it's done here */
79         LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
80         LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
81 }
82
83 static struct irq_chip lubbock_irq_chip = {
84         .name           = "FPGA",
85         .ack            = lubbock_mask_irq,
86         .mask           = lubbock_mask_irq,
87         .unmask         = lubbock_unmask_irq,
88 };
89
90 static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
91 {
92         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
93         do {
94                 GEDR(0) = GPIO_bit(0);  /* clear our parent irq */
95                 if (likely(pending)) {
96                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
97                         desc = irq_desc + irq;
98                         desc_handle_irq(irq, desc);
99                 }
100                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
101         } while (pending);
102 }
103
104 static void __init lubbock_init_irq(void)
105 {
106         int irq;
107
108         pxa25x_init_irq();
109
110         /* setup extra lubbock irqs */
111         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
112                 set_irq_chip(irq, &lubbock_irq_chip);
113                 set_irq_handler(irq, handle_level_irq);
114                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
115         }
116
117         set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
118         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
119 }
120
121 #ifdef CONFIG_PM
122
123 static int lubbock_irq_resume(struct sys_device *dev)
124 {
125         LUB_IRQ_MASK_EN = lubbock_irq_enabled;
126         return 0;
127 }
128
129 static struct sysdev_class lubbock_irq_sysclass = {
130         .name = "cpld_irq",
131         .resume = lubbock_irq_resume,
132 };
133
134 static struct sys_device lubbock_irq_device = {
135         .cls = &lubbock_irq_sysclass,
136 };
137
138 static int __init lubbock_irq_device_init(void)
139 {
140         int ret = -ENODEV;
141
142         if (machine_is_lubbock()) {
143                 ret = sysdev_class_register(&lubbock_irq_sysclass);
144                 if (ret == 0)
145                         ret = sysdev_register(&lubbock_irq_device);
146         }
147         return ret;
148 }
149
150 device_initcall(lubbock_irq_device_init);
151
152 #endif
153
154 static int lubbock_udc_is_connected(void)
155 {
156         return (LUB_MISC_RD & (1 << 9)) == 0;
157 }
158
159 static struct pxa2xx_udc_mach_info udc_info __initdata = {
160         .udc_is_connected       = lubbock_udc_is_connected,
161         // no D+ pullup; lubbock can't connect/disconnect in software
162 };
163
164 static struct platform_device lub_audio_device = {
165         .name           = "pxa2xx-ac97",
166         .id             = -1,
167 };
168
169 static struct resource sa1111_resources[] = {
170         [0] = {
171                 .start  = 0x10000000,
172                 .end    = 0x10001fff,
173                 .flags  = IORESOURCE_MEM,
174         },
175         [1] = {
176                 .start  = LUBBOCK_SA1111_IRQ,
177                 .end    = LUBBOCK_SA1111_IRQ,
178                 .flags  = IORESOURCE_IRQ,
179         },
180 };
181
182 static struct platform_device sa1111_device = {
183         .name           = "sa1111",
184         .id             = -1,
185         .num_resources  = ARRAY_SIZE(sa1111_resources),
186         .resource       = sa1111_resources,
187 };
188
189 static struct resource smc91x_resources[] = {
190         [0] = {
191                 .name   = "smc91x-regs",
192                 .start  = 0x0c000c00,
193                 .end    = 0x0c0fffff,
194                 .flags  = IORESOURCE_MEM,
195         },
196         [1] = {
197                 .start  = LUBBOCK_ETH_IRQ,
198                 .end    = LUBBOCK_ETH_IRQ,
199                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
200         },
201         [2] = {
202                 .name   = "smc91x-attrib",
203                 .start  = 0x0e000000,
204                 .end    = 0x0e0fffff,
205                 .flags  = IORESOURCE_MEM,
206         },
207 };
208
209 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
210  * you can select it to replace the ucb1400 by switching the touchscreen cable
211  * (to J5) and poking board registers (as done below).  Else it's only useful
212  * for the temperature sensors.
213  */
214 static struct pxa2xx_spi_master pxa_ssp_master_info = {
215         .num_chipselect = 0,
216 };
217
218 static struct platform_device pxa_ssp = {
219         .name           = "pxa2xx-spi",
220         .id             = 1,
221         .dev = {
222                 .platform_data  = &pxa_ssp_master_info,
223         },
224 };
225
226 static int lubbock_ads7846_pendown_state(void)
227 {
228         /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
229         return 0;
230 }
231
232 static struct ads7846_platform_data ads_info = {
233         .model                  = 7846,
234         .vref_delay_usecs       = 100,          /* internal, no cap */
235         .get_pendown_state      = lubbock_ads7846_pendown_state,
236         // .x_plate_ohms                = 500,  /* GUESS! */
237         // .y_plate_ohms                = 500,  /* GUESS! */
238 };
239
240 static void ads7846_cs(u32 command)
241 {
242         static const unsigned   TS_nCS = 1 << 11;
243         lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
244 }
245
246 static struct pxa2xx_spi_chip ads_hw = {
247         .tx_threshold           = 1,
248         .rx_threshold           = 2,
249         .cs_control             = ads7846_cs,
250 };
251
252 static struct spi_board_info spi_board_info[] __initdata = { {
253         .modalias       = "ads7846",
254         .platform_data  = &ads_info,
255         .controller_data = &ads_hw,
256         .irq            = LUBBOCK_BB_IRQ,
257         .max_speed_hz   = 120000 /* max sample rate at 3V */
258                                 * 26 /* command + data + overhead */,
259         .bus_num        = 1,
260         .chip_select    = 0,
261 },
262 };
263
264 static struct platform_device smc91x_device = {
265         .name           = "smc91x",
266         .id             = -1,
267         .num_resources  = ARRAY_SIZE(smc91x_resources),
268         .resource       = smc91x_resources,
269 };
270
271 static struct resource flash_resources[] = {
272         [0] = {
273                 .start  = 0x00000000,
274                 .end    = SZ_64M - 1,
275                 .flags  = IORESOURCE_MEM,
276         },
277         [1] = {
278                 .start  = 0x04000000,
279                 .end    = 0x04000000 + SZ_64M - 1,
280                 .flags  = IORESOURCE_MEM,
281         },
282 };
283
284 static struct mtd_partition lubbock_partitions[] = {
285         {
286                 .name =         "Bootloader",
287                 .size =         0x00040000,
288                 .offset =       0,
289                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
290         },{
291                 .name =         "Kernel",
292                 .size =         0x00100000,
293                 .offset =       0x00040000,
294         },{
295                 .name =         "Filesystem",
296                 .size =         MTDPART_SIZ_FULL,
297                 .offset =       0x00140000
298         }
299 };
300
301 static struct flash_platform_data lubbock_flash_data[2] = {
302         {
303                 .map_name       = "cfi_probe",
304                 .parts          = lubbock_partitions,
305                 .nr_parts       = ARRAY_SIZE(lubbock_partitions),
306         }, {
307                 .map_name       = "cfi_probe",
308                 .parts          = NULL,
309                 .nr_parts       = 0,
310         }
311 };
312
313 static struct platform_device lubbock_flash_device[2] = {
314         {
315                 .name           = "pxa2xx-flash",
316                 .id             = 0,
317                 .dev = {
318                         .platform_data = &lubbock_flash_data[0],
319                 },
320                 .resource = &flash_resources[0],
321                 .num_resources = 1,
322         },
323         {
324                 .name           = "pxa2xx-flash",
325                 .id             = 1,
326                 .dev = {
327                         .platform_data = &lubbock_flash_data[1],
328                 },
329                 .resource = &flash_resources[1],
330                 .num_resources = 1,
331         },
332 };
333
334 static struct platform_device *devices[] __initdata = {
335         &sa1111_device,
336         &lub_audio_device,
337         &smc91x_device,
338         &lubbock_flash_device[0],
339         &lubbock_flash_device[1],
340         &pxa_ssp,
341 };
342
343 static struct pxafb_mode_info sharp_lm8v31_mode = {
344         .pixclock       = 270000,
345         .xres           = 640,
346         .yres           = 480,
347         .bpp            = 16,
348         .hsync_len      = 1,
349         .left_margin    = 3,
350         .right_margin   = 3,
351         .vsync_len      = 1,
352         .upper_margin   = 0,
353         .lower_margin   = 0,
354         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
355         .cmap_greyscale = 0,
356 };
357
358 static struct pxafb_mach_info sharp_lm8v31 = {
359         .modes          = &sharp_lm8v31_mode,
360         .num_modes      = 1,
361         .cmap_inverse   = 0,
362         .cmap_static    = 0,
363         .lccr0          = LCCR0_SDS,
364         .lccr3          = LCCR3_PCP | LCCR3_Acb(255),
365 };
366
367 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
368
369 static void lubbock_mmc_poll(unsigned long);
370 static irq_handler_t mmc_detect_int;
371
372 static struct timer_list mmc_timer = {
373         .function       = lubbock_mmc_poll,
374 };
375
376 static void lubbock_mmc_poll(unsigned long data)
377 {
378         unsigned long flags;
379
380         /* clear any previous irq state, then ... */
381         local_irq_save(flags);
382         LUB_IRQ_SET_CLR &= ~(1 << 0);
383         local_irq_restore(flags);
384
385         /* poll until mmc/sd card is removed */
386         if (LUB_IRQ_SET_CLR & (1 << 0))
387                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
388         else {
389                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
390                 enable_irq(LUBBOCK_SD_IRQ);
391         }
392 }
393
394 static irqreturn_t lubbock_detect_int(int irq, void *data)
395 {
396         /* IRQ is level triggered; disable, and poll for removal */
397         disable_irq(irq);
398         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
399
400         return mmc_detect_int(irq, data);
401 }
402
403 static int lubbock_mci_init(struct device *dev,
404                 irq_handler_t detect_int,
405                 void *data)
406 {
407         /* setup GPIO for PXA25x MMC controller */
408         pxa_gpio_mode(GPIO6_MMCCLK_MD);
409         pxa_gpio_mode(GPIO8_MMCCS0_MD);
410
411         /* detect card insert/eject */
412         mmc_detect_int = detect_int;
413         init_timer(&mmc_timer);
414         mmc_timer.data = (unsigned long) data;
415         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
416                         IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data);
417 }
418
419 static int lubbock_mci_get_ro(struct device *dev)
420 {
421         return (LUB_MISC_RD & (1 << 2)) != 0;
422 }
423
424 static void lubbock_mci_exit(struct device *dev, void *data)
425 {
426         free_irq(LUBBOCK_SD_IRQ, data);
427         del_timer_sync(&mmc_timer);
428 }
429
430 static struct pxamci_platform_data lubbock_mci_platform_data = {
431         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
432         .detect_delay   = 1,
433         .init           = lubbock_mci_init,
434         .get_ro         = lubbock_mci_get_ro,
435         .exit           = lubbock_mci_exit,
436 };
437
438 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
439 {
440         unsigned long flags;
441
442         local_irq_save(flags);
443         if (mode & IR_SIRMODE) {
444                 LUB_MISC_WR &= ~(1 << 4);
445         } else if (mode & IR_FIRMODE) {
446                 LUB_MISC_WR |= 1 << 4;
447         }
448         local_irq_restore(flags);
449 }
450
451 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
452         .transceiver_cap  = IR_SIRMODE | IR_FIRMODE,
453         .transceiver_mode = lubbock_irda_transceiver_mode,
454 };
455
456 static void __init lubbock_init(void)
457 {
458         int flashboot = (LUB_CONF_SWITCHES & 1);
459
460         pxa_set_udc_info(&udc_info);
461         set_pxa_fb_info(&sharp_lm8v31);
462         pxa_set_mci_info(&lubbock_mci_platform_data);
463         pxa_set_ficp_info(&lubbock_ficp_platform_data);
464
465         lubbock_flash_data[0].width = lubbock_flash_data[1].width =
466                 (BOOT_DEF & 1) ? 2 : 4;
467         /* Compensate for the nROMBT switch which swaps the flash banks */
468         printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
469                flashboot?"Flash":"ROM", flashboot);
470
471         lubbock_flash_data[flashboot^1].name = "application-flash";
472         lubbock_flash_data[flashboot].name = "boot-rom";
473         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
474
475         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
476 }
477
478 static struct map_desc lubbock_io_desc[] __initdata = {
479         {       /* CPLD */
480                 .virtual        =  LUBBOCK_FPGA_VIRT,
481                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
482                 .length         = 0x00100000,
483                 .type           = MT_DEVICE
484         }
485 };
486
487 static void __init lubbock_map_io(void)
488 {
489         pxa_map_io();
490         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
491
492         /* SSP data pins */
493         pxa_gpio_mode(GPIO23_SCLK_MD);
494         pxa_gpio_mode(GPIO25_STXD_MD);
495         pxa_gpio_mode(GPIO26_SRXD_MD);
496
497         /* This enables the BTUART */
498         pxa_gpio_mode(GPIO42_BTRXD_MD);
499         pxa_gpio_mode(GPIO43_BTTXD_MD);
500         pxa_gpio_mode(GPIO44_BTCTS_MD);
501         pxa_gpio_mode(GPIO45_BTRTS_MD);
502
503         GPSR(GPIO48_nPOE) =
504                 GPIO_bit(GPIO48_nPOE) |
505                 GPIO_bit(GPIO49_nPWE) |
506                 GPIO_bit(GPIO50_nPIOR) |
507                 GPIO_bit(GPIO51_nPIOW) |
508                 GPIO_bit(GPIO52_nPCE_1) |
509                 GPIO_bit(GPIO53_nPCE_2);
510
511         pxa_gpio_mode(GPIO48_nPOE_MD);
512         pxa_gpio_mode(GPIO49_nPWE_MD);
513         pxa_gpio_mode(GPIO50_nPIOR_MD);
514         pxa_gpio_mode(GPIO51_nPIOW_MD);
515         pxa_gpio_mode(GPIO52_nPCE_1_MD);
516         pxa_gpio_mode(GPIO53_nPCE_2_MD);
517         pxa_gpio_mode(GPIO54_pSKTSEL_MD);
518         pxa_gpio_mode(GPIO55_nPREG_MD);
519         pxa_gpio_mode(GPIO56_nPWAIT_MD);
520         pxa_gpio_mode(GPIO57_nIOIS16_MD);
521
522         /* This is for the SMC chip select */
523         pxa_gpio_mode(GPIO79_nCS_3_MD);
524
525         /* setup sleep mode values */
526         PWER  = 0x00000002;
527         PFER  = 0x00000000;
528         PRER  = 0x00000002;
529         PGSR0 = 0x00008000;
530         PGSR1 = 0x003F0202;
531         PGSR2 = 0x0001C000;
532         PCFR |= PCFR_OPDE;
533 }
534
535 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
536         /* Maintainer: MontaVista Software Inc. */
537         .phys_io        = 0x40000000,
538         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
539         .map_io         = lubbock_map_io,
540         .init_irq       = lubbock_init_irq,
541         .timer          = &pxa_timer,
542         .init_machine   = lubbock_init,
543 MACHINE_END