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TOMOYO Linux Cross Reference
Linux/arch/arm/mach-pxa/mainstone.c

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  1 /*
  2  *  linux/arch/arm/mach-pxa/mainstone.c
  3  *
  4  *  Support for the Intel HCDDBBVA0 Development Platform.
  5  *  (go figure how they came up with such name...)
  6  *
  7  *  Author:     Nicolas Pitre
  8  *  Created:    Nov 05, 2002
  9  *  Copyright:  MontaVista Software Inc.
 10  *
 11  *  This program is free software; you can redistribute it and/or modify
 12  *  it under the terms of the GNU General Public License version 2 as
 13  *  published by the Free Software Foundation.
 14  */
 15 #include <linux/gpio.h>
 16 #include <linux/init.h>
 17 #include <linux/platform_device.h>
 18 #include <linux/syscore_ops.h>
 19 #include <linux/interrupt.h>
 20 #include <linux/sched.h>
 21 #include <linux/bitops.h>
 22 #include <linux/fb.h>
 23 #include <linux/ioport.h>
 24 #include <linux/mtd/mtd.h>
 25 #include <linux/mtd/partitions.h>
 26 #include <linux/input.h>
 27 #include <linux/gpio_keys.h>
 28 #include <linux/pwm_backlight.h>
 29 #include <linux/smc91x.h>
 30 #include <linux/i2c/pxa-i2c.h>
 31 #include <linux/slab.h>
 32 #include <linux/leds.h>
 33 
 34 #include <asm/types.h>
 35 #include <asm/setup.h>
 36 #include <asm/memory.h>
 37 #include <asm/mach-types.h>
 38 #include <mach/hardware.h>
 39 #include <asm/irq.h>
 40 #include <asm/sizes.h>
 41 
 42 #include <asm/mach/arch.h>
 43 #include <asm/mach/map.h>
 44 #include <asm/mach/irq.h>
 45 #include <asm/mach/flash.h>
 46 
 47 #include <mach/pxa27x.h>
 48 #include <mach/mainstone.h>
 49 #include <mach/audio.h>
 50 #include <linux/platform_data/video-pxafb.h>
 51 #include <linux/platform_data/mmc-pxamci.h>
 52 #include <linux/platform_data/irda-pxaficp.h>
 53 #include <linux/platform_data/usb-ohci-pxa27x.h>
 54 #include <linux/platform_data/keypad-pxa27x.h>
 55 #include <mach/smemc.h>
 56 
 57 #include "generic.h"
 58 #include "devices.h"
 59 
 60 static unsigned long mainstone_pin_config[] = {
 61         /* Chip Select */
 62         GPIO15_nCS_1,
 63 
 64         /* LCD - 16bpp Active TFT */
 65         GPIOxx_LCD_TFT_16BPP,
 66         GPIO16_PWM0_OUT,        /* Backlight */
 67 
 68         /* MMC */
 69         GPIO32_MMC_CLK,
 70         GPIO112_MMC_CMD,
 71         GPIO92_MMC_DAT_0,
 72         GPIO109_MMC_DAT_1,
 73         GPIO110_MMC_DAT_2,
 74         GPIO111_MMC_DAT_3,
 75 
 76         /* USB Host Port 1 */
 77         GPIO88_USBH1_PWR,
 78         GPIO89_USBH1_PEN,
 79 
 80         /* PC Card */
 81         GPIO48_nPOE,
 82         GPIO49_nPWE,
 83         GPIO50_nPIOR,
 84         GPIO51_nPIOW,
 85         GPIO85_nPCE_1,
 86         GPIO54_nPCE_2,
 87         GPIO79_PSKTSEL,
 88         GPIO55_nPREG,
 89         GPIO56_nPWAIT,
 90         GPIO57_nIOIS16,
 91 
 92         /* AC97 */
 93         GPIO28_AC97_BITCLK,
 94         GPIO29_AC97_SDATA_IN_0,
 95         GPIO30_AC97_SDATA_OUT,
 96         GPIO31_AC97_SYNC,
 97         GPIO45_AC97_SYSCLK,
 98 
 99         /* Keypad */
100         GPIO93_KP_DKIN_0,
101         GPIO94_KP_DKIN_1,
102         GPIO95_KP_DKIN_2,
103         GPIO100_KP_MKIN_0       | WAKEUP_ON_LEVEL_HIGH,
104         GPIO101_KP_MKIN_1       | WAKEUP_ON_LEVEL_HIGH,
105         GPIO102_KP_MKIN_2       | WAKEUP_ON_LEVEL_HIGH,
106         GPIO97_KP_MKIN_3        | WAKEUP_ON_LEVEL_HIGH,
107         GPIO98_KP_MKIN_4        | WAKEUP_ON_LEVEL_HIGH,
108         GPIO99_KP_MKIN_5        | WAKEUP_ON_LEVEL_HIGH,
109         GPIO103_KP_MKOUT_0,
110         GPIO104_KP_MKOUT_1,
111         GPIO105_KP_MKOUT_2,
112         GPIO106_KP_MKOUT_3,
113         GPIO107_KP_MKOUT_4,
114         GPIO108_KP_MKOUT_5,
115         GPIO96_KP_MKOUT_6,
116 
117         /* I2C */
118         GPIO117_I2C_SCL,
119         GPIO118_I2C_SDA,
120 
121         /* GPIO */
122         GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
123 };
124 
125 static unsigned long mainstone_irq_enabled;
126 
127 static void mainstone_mask_irq(struct irq_data *d)
128 {
129         int mainstone_irq = (d->irq - MAINSTONE_IRQ(0));
130         MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
131 }
132 
133 static void mainstone_unmask_irq(struct irq_data *d)
134 {
135         int mainstone_irq = (d->irq - MAINSTONE_IRQ(0));
136         /* the irq can be acknowledged only if deasserted, so it's done here */
137         MST_INTSETCLR &= ~(1 << mainstone_irq);
138         MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
139 }
140 
141 static struct irq_chip mainstone_irq_chip = {
142         .name           = "FPGA",
143         .irq_ack        = mainstone_mask_irq,
144         .irq_mask       = mainstone_mask_irq,
145         .irq_unmask     = mainstone_unmask_irq,
146 };
147 
148 static void mainstone_irq_handler(unsigned int irq, struct irq_desc *desc)
149 {
150         unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
151         do {
152                 /* clear useless edge notification */
153                 desc->irq_data.chip->irq_ack(&desc->irq_data);
154                 if (likely(pending)) {
155                         irq = MAINSTONE_IRQ(0) + __ffs(pending);
156                         generic_handle_irq(irq);
157                 }
158                 pending = MST_INTSETCLR & mainstone_irq_enabled;
159         } while (pending);
160 }
161 
162 static void __init mainstone_init_irq(void)
163 {
164         int irq;
165 
166         pxa27x_init_irq();
167 
168         /* setup extra Mainstone irqs */
169         for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
170                 irq_set_chip_and_handler(irq, &mainstone_irq_chip,
171                                          handle_level_irq);
172                 if (irq == MAINSTONE_IRQ(10) || irq == MAINSTONE_IRQ(14))
173                         set_irq_flags(irq, IRQF_VALID | IRQF_PROBE | IRQF_NOAUTOEN);
174                 else
175                         set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
176         }
177         set_irq_flags(MAINSTONE_IRQ(8), 0);
178         set_irq_flags(MAINSTONE_IRQ(12), 0);
179 
180         MST_INTMSKENA = 0;
181         MST_INTSETCLR = 0;
182 
183         irq_set_chained_handler(PXA_GPIO_TO_IRQ(0), mainstone_irq_handler);
184         irq_set_irq_type(PXA_GPIO_TO_IRQ(0), IRQ_TYPE_EDGE_FALLING);
185 }
186 
187 #ifdef CONFIG_PM
188 
189 static void mainstone_irq_resume(void)
190 {
191         MST_INTMSKENA = mainstone_irq_enabled;
192 }
193 
194 static struct syscore_ops mainstone_irq_syscore_ops = {
195         .resume = mainstone_irq_resume,
196 };
197 
198 static int __init mainstone_irq_device_init(void)
199 {
200         if (machine_is_mainstone())
201                 register_syscore_ops(&mainstone_irq_syscore_ops);
202 
203         return 0;
204 }
205 
206 device_initcall(mainstone_irq_device_init);
207 
208 #endif
209 
210 
211 static struct resource smc91x_resources[] = {
212         [0] = {
213                 .start  = (MST_ETH_PHYS + 0x300),
214                 .end    = (MST_ETH_PHYS + 0xfffff),
215                 .flags  = IORESOURCE_MEM,
216         },
217         [1] = {
218                 .start  = MAINSTONE_IRQ(3),
219                 .end    = MAINSTONE_IRQ(3),
220                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
221         }
222 };
223 
224 static struct smc91x_platdata mainstone_smc91x_info = {
225         .flags  = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
226                   SMC91X_NOWAIT | SMC91X_USE_DMA,
227 };
228 
229 static struct platform_device smc91x_device = {
230         .name           = "smc91x",
231         .id             = 0,
232         .num_resources  = ARRAY_SIZE(smc91x_resources),
233         .resource       = smc91x_resources,
234         .dev            = {
235                 .platform_data = &mainstone_smc91x_info,
236         },
237 };
238 
239 static int mst_audio_startup(struct snd_pcm_substream *substream, void *priv)
240 {
241         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
242                 MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
243         return 0;
244 }
245 
246 static void mst_audio_shutdown(struct snd_pcm_substream *substream, void *priv)
247 {
248         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
249                 MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
250 }
251 
252 static long mst_audio_suspend_mask;
253 
254 static void mst_audio_suspend(void *priv)
255 {
256         mst_audio_suspend_mask = MST_MSCWR2;
257         MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
258 }
259 
260 static void mst_audio_resume(void *priv)
261 {
262         MST_MSCWR2 &= mst_audio_suspend_mask | ~MST_MSCWR2_AC97_SPKROFF;
263 }
264 
265 static pxa2xx_audio_ops_t mst_audio_ops = {
266         .startup        = mst_audio_startup,
267         .shutdown       = mst_audio_shutdown,
268         .suspend        = mst_audio_suspend,
269         .resume         = mst_audio_resume,
270 };
271 
272 static struct resource flash_resources[] = {
273         [0] = {
274                 .start  = PXA_CS0_PHYS,
275                 .end    = PXA_CS0_PHYS + SZ_64M - 1,
276                 .flags  = IORESOURCE_MEM,
277         },
278         [1] = {
279                 .start  = PXA_CS1_PHYS,
280                 .end    = PXA_CS1_PHYS + SZ_64M - 1,
281                 .flags  = IORESOURCE_MEM,
282         },
283 };
284 
285 static struct mtd_partition mainstoneflash0_partitions[] = {
286         {
287                 .name =         "Bootloader",
288                 .size =         0x00040000,
289                 .offset =       0,
290                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
291         },{
292                 .name =         "Kernel",
293                 .size =         0x00400000,
294                 .offset =       0x00040000,
295         },{
296                 .name =         "Filesystem",
297                 .size =         MTDPART_SIZ_FULL,
298                 .offset =       0x00440000
299         }
300 };
301 
302 static struct flash_platform_data mst_flash_data[2] = {
303         {
304                 .map_name       = "cfi_probe",
305                 .parts          = mainstoneflash0_partitions,
306                 .nr_parts       = ARRAY_SIZE(mainstoneflash0_partitions),
307         }, {
308                 .map_name       = "cfi_probe",
309                 .parts          = NULL,
310                 .nr_parts       = 0,
311         }
312 };
313 
314 static struct platform_device mst_flash_device[2] = {
315         {
316                 .name           = "pxa2xx-flash",
317                 .id             = 0,
318                 .dev = {
319                         .platform_data = &mst_flash_data[0],
320                 },
321                 .resource = &flash_resources[0],
322                 .num_resources = 1,
323         },
324         {
325                 .name           = "pxa2xx-flash",
326                 .id             = 1,
327                 .dev = {
328                         .platform_data = &mst_flash_data[1],
329                 },
330                 .resource = &flash_resources[1],
331                 .num_resources = 1,
332         },
333 };
334 
335 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
336 static struct platform_pwm_backlight_data mainstone_backlight_data = {
337         .pwm_id         = 0,
338         .max_brightness = 1023,
339         .dft_brightness = 1023,
340         .pwm_period_ns  = 78770,
341         .enable_gpio    = -1,
342 };
343 
344 static struct platform_device mainstone_backlight_device = {
345         .name           = "pwm-backlight",
346         .dev            = {
347                 .parent = &pxa27x_device_pwm0.dev,
348                 .platform_data = &mainstone_backlight_data,
349         },
350 };
351 
352 static void __init mainstone_backlight_register(void)
353 {
354         int ret = platform_device_register(&mainstone_backlight_device);
355         if (ret)
356                 printk(KERN_ERR "mainstone: failed to register backlight device: %d\n", ret);
357 }
358 #else
359 #define mainstone_backlight_register()  do { } while (0)
360 #endif
361 
362 static struct pxafb_mode_info toshiba_ltm04c380k_mode = {
363         .pixclock               = 50000,
364         .xres                   = 640,
365         .yres                   = 480,
366         .bpp                    = 16,
367         .hsync_len              = 1,
368         .left_margin            = 0x9f,
369         .right_margin           = 1,
370         .vsync_len              = 44,
371         .upper_margin           = 0,
372         .lower_margin           = 0,
373         .sync                   = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
374 };
375 
376 static struct pxafb_mode_info toshiba_ltm035a776c_mode = {
377         .pixclock               = 110000,
378         .xres                   = 240,
379         .yres                   = 320,
380         .bpp                    = 16,
381         .hsync_len              = 4,
382         .left_margin            = 8,
383         .right_margin           = 20,
384         .vsync_len              = 3,
385         .upper_margin           = 1,
386         .lower_margin           = 10,
387         .sync                   = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
388 };
389 
390 static struct pxafb_mach_info mainstone_pxafb_info = {
391         .num_modes              = 1,
392         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
393 };
394 
395 static int mainstone_mci_init(struct device *dev, irq_handler_t mstone_detect_int, void *data)
396 {
397         int err;
398 
399         /* make sure SD/Memory Stick multiplexer's signals
400          * are routed to MMC controller
401          */
402         MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
403 
404         err = request_irq(MAINSTONE_MMC_IRQ, mstone_detect_int, 0,
405                              "MMC card detect", data);
406         if (err)
407                 printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
408 
409         return err;
410 }
411 
412 static int mainstone_mci_setpower(struct device *dev, unsigned int vdd)
413 {
414         struct pxamci_platform_data* p_d = dev->platform_data;
415 
416         if (( 1 << vdd) & p_d->ocr_mask) {
417                 printk(KERN_DEBUG "%s: on\n", __func__);
418                 MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
419                 MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
420         } else {
421                 printk(KERN_DEBUG "%s: off\n", __func__);
422                 MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
423         }
424         return 0;
425 }
426 
427 static void mainstone_mci_exit(struct device *dev, void *data)
428 {
429         free_irq(MAINSTONE_MMC_IRQ, data);
430 }
431 
432 static struct pxamci_platform_data mainstone_mci_platform_data = {
433         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
434         .init                   = mainstone_mci_init,
435         .setpower               = mainstone_mci_setpower,
436         .exit                   = mainstone_mci_exit,
437         .gpio_card_detect       = -1,
438         .gpio_card_ro           = -1,
439         .gpio_power             = -1,
440 };
441 
442 static void mainstone_irda_transceiver_mode(struct device *dev, int mode)
443 {
444         unsigned long flags;
445 
446         local_irq_save(flags);
447         if (mode & IR_SIRMODE) {
448                 MST_MSCWR1 &= ~MST_MSCWR1_IRDA_FIR;
449         } else if (mode & IR_FIRMODE) {
450                 MST_MSCWR1 |= MST_MSCWR1_IRDA_FIR;
451         }
452         pxa2xx_transceiver_mode(dev, mode);
453         if (mode & IR_OFF) {
454                 MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_OFF;
455         } else {
456                 MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_FULL;
457         }
458         local_irq_restore(flags);
459 }
460 
461 static struct pxaficp_platform_data mainstone_ficp_platform_data = {
462         .gpio_pwdown            = -1,
463         .transceiver_cap        = IR_SIRMODE | IR_FIRMODE | IR_OFF,
464         .transceiver_mode       = mainstone_irda_transceiver_mode,
465 };
466 
467 static struct gpio_keys_button gpio_keys_button[] = {
468         [0] = {
469                 .desc   = "wakeup",
470                 .code   = KEY_SUSPEND,
471                 .type   = EV_KEY,
472                 .gpio   = 1,
473                 .wakeup = 1,
474         },
475 };
476 
477 static struct gpio_keys_platform_data mainstone_gpio_keys = {
478         .buttons        = gpio_keys_button,
479         .nbuttons       = 1,
480 };
481 
482 static struct platform_device mst_gpio_keys_device = {
483         .name           = "gpio-keys",
484         .id             = -1,
485         .dev            = {
486                 .platform_data  = &mainstone_gpio_keys,
487         },
488 };
489 
490 static struct platform_device *platform_devices[] __initdata = {
491         &smc91x_device,
492         &mst_flash_device[0],
493         &mst_flash_device[1],
494         &mst_gpio_keys_device,
495 };
496 
497 static struct pxaohci_platform_data mainstone_ohci_platform_data = {
498         .port_mode      = PMM_PERPORT_MODE,
499         .flags          = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
500 };
501 
502 #if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
503 static const unsigned int mainstone_matrix_keys[] = {
504         KEY(0, 0, KEY_A), KEY(1, 0, KEY_B), KEY(2, 0, KEY_C),
505         KEY(3, 0, KEY_D), KEY(4, 0, KEY_E), KEY(5, 0, KEY_F),
506         KEY(0, 1, KEY_G), KEY(1, 1, KEY_H), KEY(2, 1, KEY_I),
507         KEY(3, 1, KEY_J), KEY(4, 1, KEY_K), KEY(5, 1, KEY_L),
508         KEY(0, 2, KEY_M), KEY(1, 2, KEY_N), KEY(2, 2, KEY_O),
509         KEY(3, 2, KEY_P), KEY(4, 2, KEY_Q), KEY(5, 2, KEY_R),
510         KEY(0, 3, KEY_S), KEY(1, 3, KEY_T), KEY(2, 3, KEY_U),
511         KEY(3, 3, KEY_V), KEY(4, 3, KEY_W), KEY(5, 3, KEY_X),
512         KEY(2, 4, KEY_Y), KEY(3, 4, KEY_Z),
513 
514         KEY(0, 4, KEY_DOT),     /* . */
515         KEY(1, 4, KEY_CLOSE),   /* @ */
516         KEY(4, 4, KEY_SLASH),
517         KEY(5, 4, KEY_BACKSLASH),
518         KEY(0, 5, KEY_HOME),
519         KEY(1, 5, KEY_LEFTSHIFT),
520         KEY(2, 5, KEY_SPACE),
521         KEY(3, 5, KEY_SPACE),
522         KEY(4, 5, KEY_ENTER),
523         KEY(5, 5, KEY_BACKSPACE),
524 
525         KEY(0, 6, KEY_UP),
526         KEY(1, 6, KEY_DOWN),
527         KEY(2, 6, KEY_LEFT),
528         KEY(3, 6, KEY_RIGHT),
529         KEY(4, 6, KEY_SELECT),
530 };
531 
532 static struct matrix_keymap_data mainstone_matrix_keymap_data = {
533         .keymap                 = mainstone_matrix_keys,
534         .keymap_size            = ARRAY_SIZE(mainstone_matrix_keys),
535 };
536 
537 struct pxa27x_keypad_platform_data mainstone_keypad_info = {
538         .matrix_key_rows        = 6,
539         .matrix_key_cols        = 7,
540         .matrix_keymap_data     = &mainstone_matrix_keymap_data,
541 
542         .enable_rotary0         = 1,
543         .rotary0_up_key         = KEY_UP,
544         .rotary0_down_key       = KEY_DOWN,
545 
546         .debounce_interval      = 30,
547 };
548 
549 static void __init mainstone_init_keypad(void)
550 {
551         pxa_set_keypad_info(&mainstone_keypad_info);
552 }
553 #else
554 static inline void mainstone_init_keypad(void) {}
555 #endif
556 
557 static void __init mainstone_init(void)
558 {
559         int SW7 = 0;  /* FIXME: get from SCR (Mst doc section 3.2.1.1) */
560 
561         pxa2xx_mfp_config(ARRAY_AND_SIZE(mainstone_pin_config));
562 
563         pxa_set_ffuart_info(NULL);
564         pxa_set_btuart_info(NULL);
565         pxa_set_stuart_info(NULL);
566 
567         mst_flash_data[0].width = (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
568         mst_flash_data[1].width = 4;
569 
570         /* Compensate for SW7 which swaps the flash banks */
571         mst_flash_data[SW7].name = "processor-flash";
572         mst_flash_data[SW7 ^ 1].name = "mainboard-flash";
573 
574         printk(KERN_NOTICE "Mainstone configured to boot from %s\n",
575                mst_flash_data[0].name);
576 
577         /* system bus arbiter setting
578          * - Core_Park
579          * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
580          */
581         ARB_CNTRL = ARB_CORE_PARK | 0x234;
582 
583         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
584 
585         /* reading Mainstone's "Virtual Configuration Register"
586            might be handy to select LCD type here */
587         if (0)
588                 mainstone_pxafb_info.modes = &toshiba_ltm04c380k_mode;
589         else
590                 mainstone_pxafb_info.modes = &toshiba_ltm035a776c_mode;
591 
592         pxa_set_fb_info(NULL, &mainstone_pxafb_info);
593         mainstone_backlight_register();
594 
595         pxa_set_mci_info(&mainstone_mci_platform_data);
596         pxa_set_ficp_info(&mainstone_ficp_platform_data);
597         pxa_set_ohci_info(&mainstone_ohci_platform_data);
598         pxa_set_i2c_info(NULL);
599         pxa_set_ac97_info(&mst_audio_ops);
600 
601         mainstone_init_keypad();
602 }
603 
604 
605 static struct map_desc mainstone_io_desc[] __initdata = {
606         {       /* CPLD */
607                 .virtual        =  MST_FPGA_VIRT,
608                 .pfn            = __phys_to_pfn(MST_FPGA_PHYS),
609                 .length         = 0x00100000,
610                 .type           = MT_DEVICE
611         }
612 };
613 
614 static void __init mainstone_map_io(void)
615 {
616         pxa27x_map_io();
617         iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));
618 
619         /*      for use I SRAM as framebuffer.  */
620         PSLR |= 0xF04;
621         PCFR = 0x66;
622 }
623 
624 /*
625  * Driver for the 8 discrete LEDs available for general use:
626  * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
627  * so be sure to not monkey with them here.
628  */
629 
630 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
631 struct mainstone_led {
632         struct led_classdev     cdev;
633         u8                      mask;
634 };
635 
636 /*
637  * The triggers lines up below will only be used if the
638  * LED triggers are compiled in.
639  */
640 static const struct {
641         const char *name;
642         const char *trigger;
643 } mainstone_leds[] = {
644         { "mainstone:D28", "default-on", },
645         { "mainstone:D27", "cpu0", },
646         { "mainstone:D26", "heartbeat" },
647         { "mainstone:D25", },
648         { "mainstone:D24", },
649         { "mainstone:D23", },
650         { "mainstone:D22", },
651         { "mainstone:D21", },
652 };
653 
654 static void mainstone_led_set(struct led_classdev *cdev,
655                               enum led_brightness b)
656 {
657         struct mainstone_led *led = container_of(cdev,
658                                          struct mainstone_led, cdev);
659         u32 reg = MST_LEDCTRL;
660 
661         if (b != LED_OFF)
662                 reg |= led->mask;
663         else
664                 reg &= ~led->mask;
665 
666         MST_LEDCTRL = reg;
667 }
668 
669 static enum led_brightness mainstone_led_get(struct led_classdev *cdev)
670 {
671         struct mainstone_led *led = container_of(cdev,
672                                          struct mainstone_led, cdev);
673         u32 reg = MST_LEDCTRL;
674 
675         return (reg & led->mask) ? LED_FULL : LED_OFF;
676 }
677 
678 static int __init mainstone_leds_init(void)
679 {
680         int i;
681 
682         if (!machine_is_mainstone())
683                 return -ENODEV;
684 
685         /* All ON */
686         MST_LEDCTRL |= 0xff;
687         for (i = 0; i < ARRAY_SIZE(mainstone_leds); i++) {
688                 struct mainstone_led *led;
689 
690                 led = kzalloc(sizeof(*led), GFP_KERNEL);
691                 if (!led)
692                         break;
693 
694                 led->cdev.name = mainstone_leds[i].name;
695                 led->cdev.brightness_set = mainstone_led_set;
696                 led->cdev.brightness_get = mainstone_led_get;
697                 led->cdev.default_trigger = mainstone_leds[i].trigger;
698                 led->mask = BIT(i);
699 
700                 if (led_classdev_register(NULL, &led->cdev) < 0) {
701                         kfree(led);
702                         break;
703                 }
704         }
705 
706         return 0;
707 }
708 
709 /*
710  * Since we may have triggers on any subsystem, defer registration
711  * until after subsystem_init.
712  */
713 fs_initcall(mainstone_leds_init);
714 #endif
715 
716 MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
717         /* Maintainer: MontaVista Software Inc. */
718         .atag_offset    = 0x100,        /* BLOB boot parameter setting */
719         .map_io         = mainstone_map_io,
720         .nr_irqs        = MAINSTONE_NR_IRQS,
721         .init_irq       = mainstone_init_irq,
722         .handle_irq     = pxa27x_handle_irq,
723         .init_time      = pxa_timer_init,
724         .init_machine   = mainstone_init,
725         .restart        = pxa_restart,
726 MACHINE_END
727 

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