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TOMOYO Linux Cross Reference
Linux/arch/arm/mach-pxa/balloon3.c

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  1 /*
  2  *  linux/arch/arm/mach-pxa/balloon3.c
  3  *
  4  *  Support for Balloonboard.org Balloon3 board.
  5  *
  6  *  Author:     Nick Bane, Wookey, Jonathan McDowell
  7  *  Created:    June, 2006
  8  *  Copyright:  Toby Churchill Ltd
  9  *  Derived from mainstone.c, by Nico Pitre
 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 
 16 #include <linux/export.h>
 17 #include <linux/init.h>
 18 #include <linux/platform_device.h>
 19 #include <linux/interrupt.h>
 20 #include <linux/sched.h>
 21 #include <linux/bitops.h>
 22 #include <linux/fb.h>
 23 #include <linux/gpio.h>
 24 #include <linux/ioport.h>
 25 #include <linux/ucb1400.h>
 26 #include <linux/mtd/mtd.h>
 27 #include <linux/mtd/partitions.h>
 28 #include <linux/types.h>
 29 #include <linux/i2c/pcf857x.h>
 30 #include <linux/i2c/pxa-i2c.h>
 31 #include <linux/mtd/nand.h>
 32 #include <linux/mtd/physmap.h>
 33 #include <linux/regulator/max1586.h>
 34 
 35 #include <asm/setup.h>
 36 #include <asm/mach-types.h>
 37 #include <asm/irq.h>
 38 #include <asm/sizes.h>
 39 
 40 #include <asm/mach/arch.h>
 41 #include <asm/mach/map.h>
 42 #include <asm/mach/irq.h>
 43 #include <asm/mach/flash.h>
 44 
 45 #include <mach/pxa27x.h>
 46 #include <mach/balloon3.h>
 47 #include <mach/audio.h>
 48 #include <linux/platform_data/video-pxafb.h>
 49 #include <linux/platform_data/mmc-pxamci.h>
 50 #include <mach/udc.h>
 51 #include <mach/pxa27x-udc.h>
 52 #include <linux/platform_data/irda-pxaficp.h>
 53 #include <linux/platform_data/usb-ohci-pxa27x.h>
 54 
 55 #include "generic.h"
 56 #include "devices.h"
 57 
 58 /******************************************************************************
 59  * Pin configuration
 60  ******************************************************************************/
 61 static unsigned long balloon3_pin_config[] __initdata = {
 62         /* Select BTUART 'COM1/ttyS0' as IO option for pins 42/43/44/45 */
 63         GPIO42_BTUART_RXD,
 64         GPIO43_BTUART_TXD,
 65         GPIO44_BTUART_CTS,
 66         GPIO45_BTUART_RTS,
 67 
 68         /* Reset, configured as GPIO wakeup source */
 69         GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
 70 };
 71 
 72 /******************************************************************************
 73  * Compatibility: Parameter parsing
 74  ******************************************************************************/
 75 static unsigned long balloon3_irq_enabled;
 76 
 77 static unsigned long balloon3_features_present =
 78                 (1 << BALLOON3_FEATURE_OHCI) | (1 << BALLOON3_FEATURE_CF) |
 79                 (1 << BALLOON3_FEATURE_AUDIO) |
 80                 (1 << BALLOON3_FEATURE_TOPPOLY);
 81 
 82 int balloon3_has(enum balloon3_features feature)
 83 {
 84         return (balloon3_features_present & (1 << feature)) ? 1 : 0;
 85 }
 86 EXPORT_SYMBOL_GPL(balloon3_has);
 87 
 88 int __init parse_balloon3_features(char *arg)
 89 {
 90         if (!arg)
 91                 return 0;
 92 
 93         return strict_strtoul(arg, 0, &balloon3_features_present);
 94 }
 95 early_param("balloon3_features", parse_balloon3_features);
 96 
 97 /******************************************************************************
 98  * Compact Flash slot
 99  ******************************************************************************/
100 #if     defined(CONFIG_PCMCIA_PXA2XX) || defined(CONFIG_PCMCIA_PXA2XX_MODULE)
101 static unsigned long balloon3_cf_pin_config[] __initdata = {
102         GPIO48_nPOE,
103         GPIO49_nPWE,
104         GPIO50_nPIOR,
105         GPIO51_nPIOW,
106         GPIO85_nPCE_1,
107         GPIO54_nPCE_2,
108         GPIO79_PSKTSEL,
109         GPIO55_nPREG,
110         GPIO56_nPWAIT,
111         GPIO57_nIOIS16,
112 };
113 
114 static void __init balloon3_cf_init(void)
115 {
116         if (!balloon3_has(BALLOON3_FEATURE_CF))
117                 return;
118 
119         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_cf_pin_config));
120 }
121 #else
122 static inline void balloon3_cf_init(void) {}
123 #endif
124 
125 /******************************************************************************
126  * NOR Flash
127  ******************************************************************************/
128 #if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
129 static struct mtd_partition balloon3_nor_partitions[] = {
130         {
131                 .name           = "Flash",
132                 .offset         = 0x00000000,
133                 .size           = MTDPART_SIZ_FULL,
134         }
135 };
136 
137 static struct physmap_flash_data balloon3_flash_data[] = {
138         {
139                 .width          = 2,    /* bankwidth in bytes */
140                 .parts          = balloon3_nor_partitions,
141                 .nr_parts       = ARRAY_SIZE(balloon3_nor_partitions)
142         }
143 };
144 
145 static struct resource balloon3_flash_resource = {
146         .start  = PXA_CS0_PHYS,
147         .end    = PXA_CS0_PHYS + SZ_64M - 1,
148         .flags  = IORESOURCE_MEM,
149 };
150 
151 static struct platform_device balloon3_flash = {
152         .name           = "physmap-flash",
153         .id             = 0,
154         .resource       = &balloon3_flash_resource,
155         .num_resources  = 1,
156         .dev            = {
157                 .platform_data = balloon3_flash_data,
158         },
159 };
160 static void __init balloon3_nor_init(void)
161 {
162         platform_device_register(&balloon3_flash);
163 }
164 #else
165 static inline void balloon3_nor_init(void) {}
166 #endif
167 
168 /******************************************************************************
169  * Audio and Touchscreen
170  ******************************************************************************/
171 #if     defined(CONFIG_TOUCHSCREEN_UCB1400) || \
172         defined(CONFIG_TOUCHSCREEN_UCB1400_MODULE)
173 static unsigned long balloon3_ac97_pin_config[] __initdata = {
174         GPIO28_AC97_BITCLK,
175         GPIO29_AC97_SDATA_IN_0,
176         GPIO30_AC97_SDATA_OUT,
177         GPIO31_AC97_SYNC,
178         GPIO113_AC97_nRESET,
179         GPIO95_GPIO,
180 };
181 
182 static struct ucb1400_pdata vpac270_ucb1400_pdata = {
183         .irq            = PXA_GPIO_TO_IRQ(BALLOON3_GPIO_CODEC_IRQ),
184 };
185 
186 
187 static struct platform_device balloon3_ucb1400_device = {
188         .name           = "ucb1400_core",
189         .id             = -1,
190         .dev            = {
191                 .platform_data = &vpac270_ucb1400_pdata,
192         },
193 };
194 
195 static void __init balloon3_ts_init(void)
196 {
197         if (!balloon3_has(BALLOON3_FEATURE_AUDIO))
198                 return;
199 
200         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_ac97_pin_config));
201         pxa_set_ac97_info(NULL);
202         platform_device_register(&balloon3_ucb1400_device);
203 }
204 #else
205 static inline void balloon3_ts_init(void) {}
206 #endif
207 
208 /******************************************************************************
209  * Framebuffer
210  ******************************************************************************/
211 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
212 static unsigned long balloon3_lcd_pin_config[] __initdata = {
213         GPIOxx_LCD_TFT_16BPP,
214         GPIO99_GPIO,
215 };
216 
217 static struct pxafb_mode_info balloon3_lcd_modes[] = {
218         {
219                 .pixclock               = 38000,
220                 .xres                   = 480,
221                 .yres                   = 640,
222                 .bpp                    = 16,
223                 .hsync_len              = 8,
224                 .left_margin            = 8,
225                 .right_margin           = 8,
226                 .vsync_len              = 2,
227                 .upper_margin           = 4,
228                 .lower_margin           = 5,
229                 .sync                   = 0,
230         },
231 };
232 
233 static struct pxafb_mach_info balloon3_lcd_screen = {
234         .modes                  = balloon3_lcd_modes,
235         .num_modes              = ARRAY_SIZE(balloon3_lcd_modes),
236         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
237 };
238 
239 static void balloon3_backlight_power(int on)
240 {
241         gpio_set_value(BALLOON3_GPIO_RUN_BACKLIGHT, on);
242 }
243 
244 static void __init balloon3_lcd_init(void)
245 {
246         int ret;
247 
248         if (!balloon3_has(BALLOON3_FEATURE_TOPPOLY))
249                 return;
250 
251         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_lcd_pin_config));
252 
253         ret = gpio_request(BALLOON3_GPIO_RUN_BACKLIGHT, "BKL-ON");
254         if (ret) {
255                 pr_err("Requesting BKL-ON GPIO failed!\n");
256                 goto err;
257         }
258 
259         ret = gpio_direction_output(BALLOON3_GPIO_RUN_BACKLIGHT, 1);
260         if (ret) {
261                 pr_err("Setting BKL-ON GPIO direction failed!\n");
262                 goto err2;
263         }
264 
265         balloon3_lcd_screen.pxafb_backlight_power = balloon3_backlight_power;
266         pxa_set_fb_info(NULL, &balloon3_lcd_screen);
267         return;
268 
269 err2:
270         gpio_free(BALLOON3_GPIO_RUN_BACKLIGHT);
271 err:
272         return;
273 }
274 #else
275 static inline void balloon3_lcd_init(void) {}
276 #endif
277 
278 /******************************************************************************
279  * SD/MMC card controller
280  ******************************************************************************/
281 #if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
282 static unsigned long balloon3_mmc_pin_config[] __initdata = {
283         GPIO32_MMC_CLK,
284         GPIO92_MMC_DAT_0,
285         GPIO109_MMC_DAT_1,
286         GPIO110_MMC_DAT_2,
287         GPIO111_MMC_DAT_3,
288         GPIO112_MMC_CMD,
289 };
290 
291 static struct pxamci_platform_data balloon3_mci_platform_data = {
292         .ocr_mask               = MMC_VDD_32_33 | MMC_VDD_33_34,
293         .gpio_card_detect       = -1,
294         .gpio_card_ro           = -1,
295         .gpio_power             = -1,
296         .detect_delay_ms        = 200,
297 };
298 
299 static void __init balloon3_mmc_init(void)
300 {
301         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_mmc_pin_config));
302         pxa_set_mci_info(&balloon3_mci_platform_data);
303 }
304 #else
305 static inline void balloon3_mmc_init(void) {}
306 #endif
307 
308 /******************************************************************************
309  * USB Gadget
310  ******************************************************************************/
311 #if defined(CONFIG_USB_PXA27X)||defined(CONFIG_USB_PXA27X_MODULE)
312 static void balloon3_udc_command(int cmd)
313 {
314         if (cmd == PXA2XX_UDC_CMD_CONNECT)
315                 UP2OCR |= UP2OCR_DPPUE | UP2OCR_DPPUBE;
316         else if (cmd == PXA2XX_UDC_CMD_DISCONNECT)
317                 UP2OCR &= ~UP2OCR_DPPUE;
318 }
319 
320 static int balloon3_udc_is_connected(void)
321 {
322         return 1;
323 }
324 
325 static struct pxa2xx_udc_mach_info balloon3_udc_info __initdata = {
326         .udc_command            = balloon3_udc_command,
327         .udc_is_connected       = balloon3_udc_is_connected,
328         .gpio_pullup            = -1,
329 };
330 
331 static void __init balloon3_udc_init(void)
332 {
333         pxa_set_udc_info(&balloon3_udc_info);
334         platform_device_register(&balloon3_gpio_vbus);
335 }
336 #else
337 static inline void balloon3_udc_init(void) {}
338 #endif
339 
340 /******************************************************************************
341  * IrDA
342  ******************************************************************************/
343 #if defined(CONFIG_IRDA) || defined(CONFIG_IRDA_MODULE)
344 static struct pxaficp_platform_data balloon3_ficp_platform_data = {
345         .transceiver_cap        = IR_FIRMODE | IR_SIRMODE | IR_OFF,
346 };
347 
348 static void __init balloon3_irda_init(void)
349 {
350         pxa_set_ficp_info(&balloon3_ficp_platform_data);
351 }
352 #else
353 static inline void balloon3_irda_init(void) {}
354 #endif
355 
356 /******************************************************************************
357  * USB Host
358  ******************************************************************************/
359 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
360 static unsigned long balloon3_uhc_pin_config[] __initdata = {
361         GPIO88_USBH1_PWR,
362         GPIO89_USBH1_PEN,
363 };
364 
365 static struct pxaohci_platform_data balloon3_ohci_info = {
366         .port_mode      = PMM_PERPORT_MODE,
367         .flags          = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
368 };
369 
370 static void __init balloon3_uhc_init(void)
371 {
372         if (!balloon3_has(BALLOON3_FEATURE_OHCI))
373                 return;
374         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_uhc_pin_config));
375         pxa_set_ohci_info(&balloon3_ohci_info);
376 }
377 #else
378 static inline void balloon3_uhc_init(void) {}
379 #endif
380 
381 /******************************************************************************
382  * LEDs
383  ******************************************************************************/
384 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
385 static unsigned long balloon3_led_pin_config[] __initdata = {
386         GPIO9_GPIO,     /* NAND activity LED */
387         GPIO10_GPIO,    /* Heartbeat LED */
388 };
389 
390 struct gpio_led balloon3_gpio_leds[] = {
391         {
392                 .name                   = "balloon3:green:idle",
393                 .default_trigger        = "heartbeat",
394                 .gpio                   = BALLOON3_GPIO_LED_IDLE,
395                 .active_low             = 1,
396         }, {
397                 .name                   = "balloon3:green:nand",
398                 .default_trigger        = "nand-disk",
399                 .gpio                   = BALLOON3_GPIO_LED_NAND,
400                 .active_low             = 1,
401         },
402 };
403 
404 static struct gpio_led_platform_data balloon3_gpio_led_info = {
405         .leds           = balloon3_gpio_leds,
406         .num_leds       = ARRAY_SIZE(balloon3_gpio_leds),
407 };
408 
409 static struct platform_device balloon3_leds = {
410         .name   = "leds-gpio",
411         .id     = 0,
412         .dev    = {
413                 .platform_data  = &balloon3_gpio_led_info,
414         }
415 };
416 
417 struct gpio_led balloon3_pcf_gpio_leds[] = {
418         {
419                 .name                   = "balloon3:green:led0",
420                 .gpio                   = BALLOON3_PCF_GPIO_LED0,
421                 .active_low             = 1,
422         }, {
423                 .name                   = "balloon3:green:led1",
424                 .gpio                   = BALLOON3_PCF_GPIO_LED1,
425                 .active_low             = 1,
426         }, {
427                 .name                   = "balloon3:orange:led2",
428                 .gpio                   = BALLOON3_PCF_GPIO_LED2,
429                 .active_low             = 1,
430         }, {
431                 .name                   = "balloon3:orange:led3",
432                 .gpio                   = BALLOON3_PCF_GPIO_LED3,
433                 .active_low             = 1,
434         }, {
435                 .name                   = "balloon3:orange:led4",
436                 .gpio                   = BALLOON3_PCF_GPIO_LED4,
437                 .active_low             = 1,
438         }, {
439                 .name                   = "balloon3:orange:led5",
440                 .gpio                   = BALLOON3_PCF_GPIO_LED5,
441                 .active_low             = 1,
442         }, {
443                 .name                   = "balloon3:red:led6",
444                 .gpio                   = BALLOON3_PCF_GPIO_LED6,
445                 .active_low             = 1,
446         }, {
447                 .name                   = "balloon3:red:led7",
448                 .gpio                   = BALLOON3_PCF_GPIO_LED7,
449                 .active_low             = 1,
450         },
451 };
452 
453 static struct gpio_led_platform_data balloon3_pcf_gpio_led_info = {
454         .leds           = balloon3_pcf_gpio_leds,
455         .num_leds       = ARRAY_SIZE(balloon3_pcf_gpio_leds),
456 };
457 
458 static struct platform_device balloon3_pcf_leds = {
459         .name   = "leds-gpio",
460         .id     = 1,
461         .dev    = {
462                 .platform_data  = &balloon3_pcf_gpio_led_info,
463         }
464 };
465 
466 static void __init balloon3_leds_init(void)
467 {
468         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_led_pin_config));
469         platform_device_register(&balloon3_leds);
470         platform_device_register(&balloon3_pcf_leds);
471 }
472 #else
473 static inline void balloon3_leds_init(void) {}
474 #endif
475 
476 /******************************************************************************
477  * FPGA IRQ
478  ******************************************************************************/
479 static void balloon3_mask_irq(struct irq_data *d)
480 {
481         int balloon3_irq = (d->irq - BALLOON3_IRQ(0));
482         balloon3_irq_enabled &= ~(1 << balloon3_irq);
483         __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
484 }
485 
486 static void balloon3_unmask_irq(struct irq_data *d)
487 {
488         int balloon3_irq = (d->irq - BALLOON3_IRQ(0));
489         balloon3_irq_enabled |= (1 << balloon3_irq);
490         __raw_writel(~balloon3_irq_enabled, BALLOON3_INT_CONTROL_REG);
491 }
492 
493 static struct irq_chip balloon3_irq_chip = {
494         .name           = "FPGA",
495         .irq_ack        = balloon3_mask_irq,
496         .irq_mask       = balloon3_mask_irq,
497         .irq_unmask     = balloon3_unmask_irq,
498 };
499 
500 static void balloon3_irq_handler(unsigned int irq, struct irq_desc *desc)
501 {
502         unsigned long pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
503                                         balloon3_irq_enabled;
504         do {
505                 /* clear useless edge notification */
506                 if (desc->irq_data.chip->irq_ack) {
507                         struct irq_data *d;
508 
509                         d = irq_get_irq_data(BALLOON3_AUX_NIRQ);
510                         desc->irq_data.chip->irq_ack(d);
511                 }
512 
513                 while (pending) {
514                         irq = BALLOON3_IRQ(0) + __ffs(pending);
515                         generic_handle_irq(irq);
516                         pending &= pending - 1;
517                 }
518                 pending = __raw_readl(BALLOON3_INT_CONTROL_REG) &
519                                 balloon3_irq_enabled;
520         } while (pending);
521 }
522 
523 static void __init balloon3_init_irq(void)
524 {
525         int irq;
526 
527         pxa27x_init_irq();
528         /* setup extra Balloon3 irqs */
529         for (irq = BALLOON3_IRQ(0); irq <= BALLOON3_IRQ(7); irq++) {
530                 irq_set_chip_and_handler(irq, &balloon3_irq_chip,
531                                          handle_level_irq);
532                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
533         }
534 
535         irq_set_chained_handler(BALLOON3_AUX_NIRQ, balloon3_irq_handler);
536         irq_set_irq_type(BALLOON3_AUX_NIRQ, IRQ_TYPE_EDGE_FALLING);
537 
538         pr_debug("%s: chained handler installed - irq %d automatically "
539                 "enabled\n", __func__, BALLOON3_AUX_NIRQ);
540 }
541 
542 /******************************************************************************
543  * GPIO expander
544  ******************************************************************************/
545 #if defined(CONFIG_GPIO_PCF857X) || defined(CONFIG_GPIO_PCF857X_MODULE)
546 static struct pcf857x_platform_data balloon3_pcf857x_pdata = {
547         .gpio_base      = BALLOON3_PCF_GPIO_BASE,
548         .n_latch        = 0,
549         .setup          = NULL,
550         .teardown       = NULL,
551         .context        = NULL,
552 };
553 
554 static struct i2c_board_info __initdata balloon3_i2c_devs[] = {
555         {
556                 I2C_BOARD_INFO("pcf8574a", 0x38),
557                 .platform_data  = &balloon3_pcf857x_pdata,
558         },
559 };
560 
561 static void __init balloon3_i2c_init(void)
562 {
563         pxa_set_i2c_info(NULL);
564         i2c_register_board_info(0, ARRAY_AND_SIZE(balloon3_i2c_devs));
565 }
566 #else
567 static inline void balloon3_i2c_init(void) {}
568 #endif
569 
570 /******************************************************************************
571  * NAND
572  ******************************************************************************/
573 #if defined(CONFIG_MTD_NAND_PLATFORM)||defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
574 static void balloon3_nand_cmd_ctl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
575 {
576         struct nand_chip *this = mtd->priv;
577         uint8_t balloon3_ctl_set = 0, balloon3_ctl_clr = 0;
578 
579         if (ctrl & NAND_CTRL_CHANGE) {
580                 if (ctrl & NAND_CLE)
581                         balloon3_ctl_set |= BALLOON3_NAND_CONTROL_FLCLE;
582                 else
583                         balloon3_ctl_clr |= BALLOON3_NAND_CONTROL_FLCLE;
584 
585                 if (ctrl & NAND_ALE)
586                         balloon3_ctl_set |= BALLOON3_NAND_CONTROL_FLALE;
587                 else
588                         balloon3_ctl_clr |= BALLOON3_NAND_CONTROL_FLALE;
589 
590                 if (balloon3_ctl_clr)
591                         __raw_writel(balloon3_ctl_clr,
592                                 BALLOON3_NAND_CONTROL_REG);
593                 if (balloon3_ctl_set)
594                         __raw_writel(balloon3_ctl_set,
595                                 BALLOON3_NAND_CONTROL_REG +
596                                 BALLOON3_FPGA_SETnCLR);
597         }
598 
599         if (cmd != NAND_CMD_NONE)
600                 writeb(cmd, this->IO_ADDR_W);
601 }
602 
603 static void balloon3_nand_select_chip(struct mtd_info *mtd, int chip)
604 {
605         if (chip < 0 || chip > 3)
606                 return;
607 
608         /* Assert all nCE lines */
609         __raw_writew(
610                 BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
611                 BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3,
612                 BALLOON3_NAND_CONTROL_REG + BALLOON3_FPGA_SETnCLR);
613 
614         /* Deassert correct nCE line */
615         __raw_writew(BALLOON3_NAND_CONTROL_FLCE0 << chip,
616                 BALLOON3_NAND_CONTROL_REG);
617 }
618 
619 static int balloon3_nand_dev_ready(struct mtd_info *mtd)
620 {
621         return __raw_readl(BALLOON3_NAND_STAT_REG) & BALLOON3_NAND_STAT_RNB;
622 }
623 
624 static int balloon3_nand_probe(struct platform_device *pdev)
625 {
626         uint16_t ver;
627         int ret;
628 
629         __raw_writew(BALLOON3_NAND_CONTROL2_16BIT,
630                 BALLOON3_NAND_CONTROL2_REG + BALLOON3_FPGA_SETnCLR);
631 
632         ver = __raw_readw(BALLOON3_FPGA_VER);
633         if (ver < 0x4f08)
634                 pr_warn("The FPGA code, version 0x%04x, is too old. "
635                         "NAND support might be broken in this version!", ver);
636 
637         /* Power up the NAND chips */
638         ret = gpio_request(BALLOON3_GPIO_RUN_NAND, "NAND");
639         if (ret)
640                 goto err1;
641 
642         ret = gpio_direction_output(BALLOON3_GPIO_RUN_NAND, 1);
643         if (ret)
644                 goto err2;
645 
646         gpio_set_value(BALLOON3_GPIO_RUN_NAND, 1);
647 
648         /* Deassert all nCE lines and write protect line */
649         __raw_writel(
650                 BALLOON3_NAND_CONTROL_FLCE0 | BALLOON3_NAND_CONTROL_FLCE1 |
651                 BALLOON3_NAND_CONTROL_FLCE2 | BALLOON3_NAND_CONTROL_FLCE3 |
652                 BALLOON3_NAND_CONTROL_FLWP,
653                 BALLOON3_NAND_CONTROL_REG + BALLOON3_FPGA_SETnCLR);
654         return 0;
655 
656 err2:
657         gpio_free(BALLOON3_GPIO_RUN_NAND);
658 err1:
659         return ret;
660 }
661 
662 static void balloon3_nand_remove(struct platform_device *pdev)
663 {
664         /* Power down the NAND chips */
665         gpio_set_value(BALLOON3_GPIO_RUN_NAND, 0);
666         gpio_free(BALLOON3_GPIO_RUN_NAND);
667 }
668 
669 static struct mtd_partition balloon3_partition_info[] = {
670         [0] = {
671                 .name   = "Boot",
672                 .offset = 0,
673                 .size   = SZ_4M,
674         },
675         [1] = {
676                 .name   = "RootFS",
677                 .offset = MTDPART_OFS_APPEND,
678                 .size   = MTDPART_SIZ_FULL
679         },
680 };
681 
682 struct platform_nand_data balloon3_nand_pdata = {
683         .chip = {
684                 .nr_chips       = 4,
685                 .chip_offset    = 0,
686                 .nr_partitions  = ARRAY_SIZE(balloon3_partition_info),
687                 .partitions     = balloon3_partition_info,
688                 .chip_delay     = 50,
689         },
690         .ctrl = {
691                 .hwcontrol      = 0,
692                 .dev_ready      = balloon3_nand_dev_ready,
693                 .select_chip    = balloon3_nand_select_chip,
694                 .cmd_ctrl       = balloon3_nand_cmd_ctl,
695                 .probe          = balloon3_nand_probe,
696                 .remove         = balloon3_nand_remove,
697         },
698 };
699 
700 static struct resource balloon3_nand_resource[] = {
701         [0] = {
702                 .start = BALLOON3_NAND_BASE,
703                 .end   = BALLOON3_NAND_BASE + 0x4,
704                 .flags = IORESOURCE_MEM,
705         },
706 };
707 
708 static struct platform_device balloon3_nand = {
709         .name           = "gen_nand",
710         .num_resources  = ARRAY_SIZE(balloon3_nand_resource),
711         .resource       = balloon3_nand_resource,
712         .id             = -1,
713         .dev            = {
714                 .platform_data = &balloon3_nand_pdata,
715         }
716 };
717 
718 static void __init balloon3_nand_init(void)
719 {
720         platform_device_register(&balloon3_nand);
721 }
722 #else
723 static inline void balloon3_nand_init(void) {}
724 #endif
725 
726 /******************************************************************************
727  * Core power regulator
728  ******************************************************************************/
729 #if defined(CONFIG_REGULATOR_MAX1586) || \
730     defined(CONFIG_REGULATOR_MAX1586_MODULE)
731 static struct regulator_consumer_supply balloon3_max1587a_consumers[] = {
732         REGULATOR_SUPPLY("vcc_core", NULL),
733 };
734 
735 static struct regulator_init_data balloon3_max1587a_v3_info = {
736         .constraints = {
737                 .name           = "vcc_core range",
738                 .min_uV         = 900000,
739                 .max_uV         = 1705000,
740                 .always_on      = 1,
741                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
742         },
743         .consumer_supplies      = balloon3_max1587a_consumers,
744         .num_consumer_supplies  = ARRAY_SIZE(balloon3_max1587a_consumers),
745 };
746 
747 static struct max1586_subdev_data balloon3_max1587a_subdevs[] = {
748         {
749                 .name           = "vcc_core",
750                 .id             = MAX1586_V3,
751                 .platform_data  = &balloon3_max1587a_v3_info,
752         }
753 };
754 
755 static struct max1586_platform_data balloon3_max1587a_info = {
756         .subdevs     = balloon3_max1587a_subdevs,
757         .num_subdevs = ARRAY_SIZE(balloon3_max1587a_subdevs),
758         .v3_gain     = MAX1586_GAIN_R24_3k32, /* 730..1550 mV */
759 };
760 
761 static struct i2c_board_info __initdata balloon3_pi2c_board_info[] = {
762         {
763                 I2C_BOARD_INFO("max1586", 0x14),
764                 .platform_data  = &balloon3_max1587a_info,
765         },
766 };
767 
768 static void __init balloon3_pmic_init(void)
769 {
770         pxa27x_set_i2c_power_info(NULL);
771         i2c_register_board_info(1, ARRAY_AND_SIZE(balloon3_pi2c_board_info));
772 }
773 #else
774 static inline void balloon3_pmic_init(void) {}
775 #endif
776 
777 /******************************************************************************
778  * Machine init
779  ******************************************************************************/
780 static void __init balloon3_init(void)
781 {
782         ARB_CNTRL = ARB_CORE_PARK | 0x234;
783 
784         pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config));
785 
786         pxa_set_ffuart_info(NULL);
787         pxa_set_btuart_info(NULL);
788         pxa_set_stuart_info(NULL);
789 
790         balloon3_i2c_init();
791         balloon3_irda_init();
792         balloon3_lcd_init();
793         balloon3_leds_init();
794         balloon3_mmc_init();
795         balloon3_nand_init();
796         balloon3_nor_init();
797         balloon3_pmic_init();
798         balloon3_ts_init();
799         balloon3_udc_init();
800         balloon3_uhc_init();
801         balloon3_cf_init();
802 }
803 
804 static struct map_desc balloon3_io_desc[] __initdata = {
805         {       /* CPLD/FPGA */
806                 .virtual        = (unsigned long)BALLOON3_FPGA_VIRT,
807                 .pfn            = __phys_to_pfn(BALLOON3_FPGA_PHYS),
808                 .length         = BALLOON3_FPGA_LENGTH,
809                 .type           = MT_DEVICE,
810         },
811 };
812 
813 static void __init balloon3_map_io(void)
814 {
815         pxa27x_map_io();
816         iotable_init(balloon3_io_desc, ARRAY_SIZE(balloon3_io_desc));
817 }
818 
819 MACHINE_START(BALLOON3, "Balloon3")
820         /* Maintainer: Nick Bane. */
821         .map_io         = balloon3_map_io,
822         .nr_irqs        = BALLOON3_NR_IRQS,
823         .init_irq       = balloon3_init_irq,
824         .handle_irq     = pxa27x_handle_irq,
825         .init_time      = pxa_timer_init,
826         .init_machine   = balloon3_init,
827         .atag_offset    = 0x100,
828         .restart        = pxa_restart,
829 MACHINE_END
830 

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