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Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6] / 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/pxa-regs.h>
45 #include <mach/pxa2xx-regs.h>
46 #include <mach/mfp-pxa25x.h>
47 #include <mach/audio.h>
48 #include <mach/lubbock.h>
49 #include <mach/udc.h>
50 #include <mach/irda.h>
51 #include <mach/pxafb.h>
52 #include <mach/mmc.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         GPIO79_nCS_3,   /* CS3 - SMC ethernet */
61
62         /* SSP data pins */
63         GPIO23_SSP1_SCLK,
64         GPIO25_SSP1_TXD,
65         GPIO26_SSP1_RXD,
66
67         /* BTUART */
68         GPIO42_BTUART_RXD,
69         GPIO43_BTUART_TXD,
70         GPIO44_BTUART_CTS,
71         GPIO45_BTUART_RTS,
72
73         /* PC Card */
74         GPIO48_nPOE,
75         GPIO49_nPWE,
76         GPIO50_nPIOR,
77         GPIO51_nPIOW,
78         GPIO52_nPCE_1,
79         GPIO53_nPCE_2,
80         GPIO54_nPSKTSEL,
81         GPIO55_nPREG,
82         GPIO56_nPWAIT,
83         GPIO57_nIOIS16,
84
85         /* MMC */
86         GPIO6_MMC_CLK,
87         GPIO8_MMC_CS0,
88
89         /* wakeup */
90         GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
91 };
92
93 #define LUB_MISC_WR             __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
94
95 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
96 {
97         unsigned long flags;
98
99         local_irq_save(flags);
100         LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
101         local_irq_restore(flags);
102 }
103 EXPORT_SYMBOL(lubbock_set_misc_wr);
104
105 static unsigned long lubbock_irq_enabled;
106
107 static void lubbock_mask_irq(unsigned int irq)
108 {
109         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
110         LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
111 }
112
113 static void lubbock_unmask_irq(unsigned int irq)
114 {
115         int lubbock_irq = (irq - LUBBOCK_IRQ(0));
116         /* the irq can be acknowledged only if deasserted, so it's done here */
117         LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
118         LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
119 }
120
121 static struct irq_chip lubbock_irq_chip = {
122         .name           = "FPGA",
123         .ack            = lubbock_mask_irq,
124         .mask           = lubbock_mask_irq,
125         .unmask         = lubbock_unmask_irq,
126 };
127
128 static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
129 {
130         unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
131         do {
132                 GEDR(0) = GPIO_bit(0);  /* clear our parent irq */
133                 if (likely(pending)) {
134                         irq = LUBBOCK_IRQ(0) + __ffs(pending);
135                         desc = irq_desc + irq;
136                         desc_handle_irq(irq, desc);
137                 }
138                 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
139         } while (pending);
140 }
141
142 static void __init lubbock_init_irq(void)
143 {
144         int irq;
145
146         pxa25x_init_irq();
147
148         /* setup extra lubbock irqs */
149         for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
150                 set_irq_chip(irq, &lubbock_irq_chip);
151                 set_irq_handler(irq, handle_level_irq);
152                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
153         }
154
155         set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
156         set_irq_type(IRQ_GPIO(0), IRQ_TYPE_EDGE_FALLING);
157 }
158
159 #ifdef CONFIG_PM
160
161 static int lubbock_irq_resume(struct sys_device *dev)
162 {
163         LUB_IRQ_MASK_EN = lubbock_irq_enabled;
164         return 0;
165 }
166
167 static struct sysdev_class lubbock_irq_sysclass = {
168         .name = "cpld_irq",
169         .resume = lubbock_irq_resume,
170 };
171
172 static struct sys_device lubbock_irq_device = {
173         .cls = &lubbock_irq_sysclass,
174 };
175
176 static int __init lubbock_irq_device_init(void)
177 {
178         int ret = -ENODEV;
179
180         if (machine_is_lubbock()) {
181                 ret = sysdev_class_register(&lubbock_irq_sysclass);
182                 if (ret == 0)
183                         ret = sysdev_register(&lubbock_irq_device);
184         }
185         return ret;
186 }
187
188 device_initcall(lubbock_irq_device_init);
189
190 #endif
191
192 static int lubbock_udc_is_connected(void)
193 {
194         return (LUB_MISC_RD & (1 << 9)) == 0;
195 }
196
197 static struct pxa2xx_udc_mach_info udc_info __initdata = {
198         .udc_is_connected       = lubbock_udc_is_connected,
199         // no D+ pullup; lubbock can't connect/disconnect in software
200 };
201
202 static struct resource sa1111_resources[] = {
203         [0] = {
204                 .start  = 0x10000000,
205                 .end    = 0x10001fff,
206                 .flags  = IORESOURCE_MEM,
207         },
208         [1] = {
209                 .start  = LUBBOCK_SA1111_IRQ,
210                 .end    = LUBBOCK_SA1111_IRQ,
211                 .flags  = IORESOURCE_IRQ,
212         },
213 };
214
215 static struct platform_device sa1111_device = {
216         .name           = "sa1111",
217         .id             = -1,
218         .num_resources  = ARRAY_SIZE(sa1111_resources),
219         .resource       = sa1111_resources,
220 };
221
222 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
223  * you can select it to replace the ucb1400 by switching the touchscreen cable
224  * (to J5) and poking board registers (as done below).  Else it's only useful
225  * for the temperature sensors.
226  */
227 static struct pxa2xx_spi_master pxa_ssp_master_info = {
228         .num_chipselect = 1,
229 };
230
231 static int lubbock_ads7846_pendown_state(void)
232 {
233         /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
234         return 0;
235 }
236
237 static struct ads7846_platform_data ads_info = {
238         .model                  = 7846,
239         .vref_delay_usecs       = 100,          /* internal, no cap */
240         .get_pendown_state      = lubbock_ads7846_pendown_state,
241         // .x_plate_ohms                = 500,  /* GUESS! */
242         // .y_plate_ohms                = 500,  /* GUESS! */
243 };
244
245 static void ads7846_cs(u32 command)
246 {
247         static const unsigned   TS_nCS = 1 << 11;
248         lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
249 }
250
251 static struct pxa2xx_spi_chip ads_hw = {
252         .tx_threshold           = 1,
253         .rx_threshold           = 2,
254         .cs_control             = ads7846_cs,
255 };
256
257 static struct spi_board_info spi_board_info[] __initdata = { {
258         .modalias       = "ads7846",
259         .platform_data  = &ads_info,
260         .controller_data = &ads_hw,
261         .irq            = LUBBOCK_BB_IRQ,
262         .max_speed_hz   = 120000 /* max sample rate at 3V */
263                                 * 26 /* command + data + overhead */,
264         .bus_num        = 1,
265         .chip_select    = 0,
266 },
267 };
268
269 static struct resource smc91x_resources[] = {
270         [0] = {
271                 .name   = "smc91x-regs",
272                 .start  = 0x0c000c00,
273                 .end    = 0x0c0fffff,
274                 .flags  = IORESOURCE_MEM,
275         },
276         [1] = {
277                 .start  = LUBBOCK_ETH_IRQ,
278                 .end    = LUBBOCK_ETH_IRQ,
279                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
280         },
281         [2] = {
282                 .name   = "smc91x-attrib",
283                 .start  = 0x0e000000,
284                 .end    = 0x0e0fffff,
285                 .flags  = IORESOURCE_MEM,
286         },
287 };
288
289 static struct smc91x_platdata lubbock_smc91x_info = {
290         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
291 };
292
293 static struct platform_device smc91x_device = {
294         .name           = "smc91x",
295         .id             = -1,
296         .num_resources  = ARRAY_SIZE(smc91x_resources),
297         .resource       = smc91x_resources,
298         .dev            = {
299                 .platform_data = &lubbock_smc91x_info,
300         },
301 };
302
303 static struct resource flash_resources[] = {
304         [0] = {
305                 .start  = 0x00000000,
306                 .end    = SZ_64M - 1,
307                 .flags  = IORESOURCE_MEM,
308         },
309         [1] = {
310                 .start  = 0x04000000,
311                 .end    = 0x04000000 + SZ_64M - 1,
312                 .flags  = IORESOURCE_MEM,
313         },
314 };
315
316 static struct mtd_partition lubbock_partitions[] = {
317         {
318                 .name =         "Bootloader",
319                 .size =         0x00040000,
320                 .offset =       0,
321                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
322         },{
323                 .name =         "Kernel",
324                 .size =         0x00100000,
325                 .offset =       0x00040000,
326         },{
327                 .name =         "Filesystem",
328                 .size =         MTDPART_SIZ_FULL,
329                 .offset =       0x00140000
330         }
331 };
332
333 static struct flash_platform_data lubbock_flash_data[2] = {
334         {
335                 .map_name       = "cfi_probe",
336                 .parts          = lubbock_partitions,
337                 .nr_parts       = ARRAY_SIZE(lubbock_partitions),
338         }, {
339                 .map_name       = "cfi_probe",
340                 .parts          = NULL,
341                 .nr_parts       = 0,
342         }
343 };
344
345 static struct platform_device lubbock_flash_device[2] = {
346         {
347                 .name           = "pxa2xx-flash",
348                 .id             = 0,
349                 .dev = {
350                         .platform_data = &lubbock_flash_data[0],
351                 },
352                 .resource = &flash_resources[0],
353                 .num_resources = 1,
354         },
355         {
356                 .name           = "pxa2xx-flash",
357                 .id             = 1,
358                 .dev = {
359                         .platform_data = &lubbock_flash_data[1],
360                 },
361                 .resource = &flash_resources[1],
362                 .num_resources = 1,
363         },
364 };
365
366 static struct platform_device *devices[] __initdata = {
367         &sa1111_device,
368         &smc91x_device,
369         &lubbock_flash_device[0],
370         &lubbock_flash_device[1],
371 };
372
373 static struct pxafb_mode_info sharp_lm8v31_mode = {
374         .pixclock       = 270000,
375         .xres           = 640,
376         .yres           = 480,
377         .bpp            = 16,
378         .hsync_len      = 1,
379         .left_margin    = 3,
380         .right_margin   = 3,
381         .vsync_len      = 1,
382         .upper_margin   = 0,
383         .lower_margin   = 0,
384         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
385         .cmap_greyscale = 0,
386 };
387
388 static struct pxafb_mach_info sharp_lm8v31 = {
389         .modes          = &sharp_lm8v31_mode,
390         .num_modes      = 1,
391         .cmap_inverse   = 0,
392         .cmap_static    = 0,
393         .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
394                           LCD_AC_BIAS_FREQ(255),
395 };
396
397 #define MMC_POLL_RATE           msecs_to_jiffies(1000)
398
399 static void lubbock_mmc_poll(unsigned long);
400 static irq_handler_t mmc_detect_int;
401
402 static struct timer_list mmc_timer = {
403         .function       = lubbock_mmc_poll,
404 };
405
406 static void lubbock_mmc_poll(unsigned long data)
407 {
408         unsigned long flags;
409
410         /* clear any previous irq state, then ... */
411         local_irq_save(flags);
412         LUB_IRQ_SET_CLR &= ~(1 << 0);
413         local_irq_restore(flags);
414
415         /* poll until mmc/sd card is removed */
416         if (LUB_IRQ_SET_CLR & (1 << 0))
417                 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
418         else {
419                 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
420                 enable_irq(LUBBOCK_SD_IRQ);
421         }
422 }
423
424 static irqreturn_t lubbock_detect_int(int irq, void *data)
425 {
426         /* IRQ is level triggered; disable, and poll for removal */
427         disable_irq(irq);
428         mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
429
430         return mmc_detect_int(irq, data);
431 }
432
433 static int lubbock_mci_init(struct device *dev,
434                 irq_handler_t detect_int,
435                 void *data)
436 {
437         /* detect card insert/eject */
438         mmc_detect_int = detect_int;
439         init_timer(&mmc_timer);
440         mmc_timer.data = (unsigned long) data;
441         return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
442                         IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data);
443 }
444
445 static int lubbock_mci_get_ro(struct device *dev)
446 {
447         return (LUB_MISC_RD & (1 << 2)) != 0;
448 }
449
450 static void lubbock_mci_exit(struct device *dev, void *data)
451 {
452         free_irq(LUBBOCK_SD_IRQ, data);
453         del_timer_sync(&mmc_timer);
454 }
455
456 static struct pxamci_platform_data lubbock_mci_platform_data = {
457         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
458         .detect_delay   = 1,
459         .init           = lubbock_mci_init,
460         .get_ro         = lubbock_mci_get_ro,
461         .exit           = lubbock_mci_exit,
462 };
463
464 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
465 {
466         unsigned long flags;
467
468         local_irq_save(flags);
469         if (mode & IR_SIRMODE) {
470                 LUB_MISC_WR &= ~(1 << 4);
471         } else if (mode & IR_FIRMODE) {
472                 LUB_MISC_WR |= 1 << 4;
473         }
474         pxa2xx_transceiver_mode(dev, mode);
475         local_irq_restore(flags);
476 }
477
478 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
479         .transceiver_cap  = IR_SIRMODE | IR_FIRMODE,
480         .transceiver_mode = lubbock_irda_transceiver_mode,
481 };
482
483 static void __init lubbock_init(void)
484 {
485         int flashboot = (LUB_CONF_SWITCHES & 1);
486
487         pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
488
489         clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
490         pxa_set_udc_info(&udc_info);
491         set_pxa_fb_info(&sharp_lm8v31);
492         pxa_set_mci_info(&lubbock_mci_platform_data);
493         pxa_set_ficp_info(&lubbock_ficp_platform_data);
494         pxa_set_ac97_info(NULL);
495
496         lubbock_flash_data[0].width = lubbock_flash_data[1].width =
497                 (BOOT_DEF & 1) ? 2 : 4;
498         /* Compensate for the nROMBT switch which swaps the flash banks */
499         printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
500                flashboot?"Flash":"ROM", flashboot);
501
502         lubbock_flash_data[flashboot^1].name = "application-flash";
503         lubbock_flash_data[flashboot].name = "boot-rom";
504         (void) platform_add_devices(devices, ARRAY_SIZE(devices));
505
506         pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
507         spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
508 }
509
510 static struct map_desc lubbock_io_desc[] __initdata = {
511         {       /* CPLD */
512                 .virtual        =  LUBBOCK_FPGA_VIRT,
513                 .pfn            = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
514                 .length         = 0x00100000,
515                 .type           = MT_DEVICE
516         }
517 };
518
519 static void __init lubbock_map_io(void)
520 {
521         pxa_map_io();
522         iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
523
524         PCFR |= PCFR_OPDE;
525 }
526
527 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
528         /* Maintainer: MontaVista Software Inc. */
529         .phys_io        = 0x40000000,
530         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
531         .map_io         = lubbock_map_io,
532         .init_irq       = lubbock_init_irq,
533         .timer          = &pxa_timer,
534         .init_machine   = lubbock_init,
535 MACHINE_END