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 <mach/pxafb.h>
49 #include <mach/mmc.h>
50 #include <mach/udc.h>
51 #include <mach/pxa27x-udc.h>
52 #include <mach/irda.h>
53 #include <mach/ohci.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
balloon3_has(enum balloon3_features feature)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
parse_balloon3_features(char * arg)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
balloon3_cf_init(void)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
balloon3_cf_init(void)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 };
balloon3_nor_init(void)160 static void __init balloon3_nor_init(void)
161 {
162 platform_device_register(&balloon3_flash);
163 }
164 #else
balloon3_nor_init(void)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
balloon3_ts_init(void)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
balloon3_ts_init(void)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
balloon3_backlight_power(int on)239 static void balloon3_backlight_power(int on)
240 {
241 gpio_set_value(BALLOON3_GPIO_RUN_BACKLIGHT, on);
242 }
243
balloon3_lcd_init(void)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
balloon3_lcd_init(void)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
balloon3_mmc_init(void)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
balloon3_mmc_init(void)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)
balloon3_udc_command(int cmd)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
balloon3_udc_is_connected(void)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
balloon3_udc_init(void)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
balloon3_udc_init(void)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
balloon3_irda_init(void)348 static void __init balloon3_irda_init(void)
349 {
350 pxa_set_ficp_info(&balloon3_ficp_platform_data);
351 }
352 #else
balloon3_irda_init(void)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
balloon3_uhc_init(void)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
balloon3_uhc_init(void)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
balloon3_leds_init(void)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
balloon3_leds_init(void)473 static inline void balloon3_leds_init(void) {}
474 #endif
475
476 /******************************************************************************
477 * FPGA IRQ
478 ******************************************************************************/
balloon3_mask_irq(struct irq_data * d)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
balloon3_unmask_irq(struct irq_data * d)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
balloon3_irq_handler(unsigned int irq,struct irq_desc * desc)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
balloon3_init_irq(void)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
balloon3_i2c_init(void)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
balloon3_i2c_init(void)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)
balloon3_nand_cmd_ctl(struct mtd_info * mtd,int cmd,unsigned int ctrl)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
balloon3_nand_select_chip(struct mtd_info * mtd,int chip)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
balloon3_nand_dev_ready(struct mtd_info * mtd)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
balloon3_nand_probe(struct platform_device * pdev)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
balloon3_nand_remove(struct platform_device * pdev)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 static const char *balloon3_part_probes[] = { "cmdlinepart", NULL };
683
684 struct platform_nand_data balloon3_nand_pdata = {
685 .chip = {
686 .nr_chips = 4,
687 .chip_offset = 0,
688 .nr_partitions = ARRAY_SIZE(balloon3_partition_info),
689 .partitions = balloon3_partition_info,
690 .chip_delay = 50,
691 .part_probe_types = balloon3_part_probes,
692 },
693 .ctrl = {
694 .hwcontrol = 0,
695 .dev_ready = balloon3_nand_dev_ready,
696 .select_chip = balloon3_nand_select_chip,
697 .cmd_ctrl = balloon3_nand_cmd_ctl,
698 .probe = balloon3_nand_probe,
699 .remove = balloon3_nand_remove,
700 },
701 };
702
703 static struct resource balloon3_nand_resource[] = {
704 [0] = {
705 .start = BALLOON3_NAND_BASE,
706 .end = BALLOON3_NAND_BASE + 0x4,
707 .flags = IORESOURCE_MEM,
708 },
709 };
710
711 static struct platform_device balloon3_nand = {
712 .name = "gen_nand",
713 .num_resources = ARRAY_SIZE(balloon3_nand_resource),
714 .resource = balloon3_nand_resource,
715 .id = -1,
716 .dev = {
717 .platform_data = &balloon3_nand_pdata,
718 }
719 };
720
balloon3_nand_init(void)721 static void __init balloon3_nand_init(void)
722 {
723 platform_device_register(&balloon3_nand);
724 }
725 #else
balloon3_nand_init(void)726 static inline void balloon3_nand_init(void) {}
727 #endif
728
729 /******************************************************************************
730 * Core power regulator
731 ******************************************************************************/
732 #if defined(CONFIG_REGULATOR_MAX1586) || \
733 defined(CONFIG_REGULATOR_MAX1586_MODULE)
734 static struct regulator_consumer_supply balloon3_max1587a_consumers[] = {
735 {
736 .supply = "vcc_core",
737 }
738 };
739
740 static struct regulator_init_data balloon3_max1587a_v3_info = {
741 .constraints = {
742 .name = "vcc_core range",
743 .min_uV = 900000,
744 .max_uV = 1705000,
745 .always_on = 1,
746 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
747 },
748 .consumer_supplies = balloon3_max1587a_consumers,
749 .num_consumer_supplies = ARRAY_SIZE(balloon3_max1587a_consumers),
750 };
751
752 static struct max1586_subdev_data balloon3_max1587a_subdevs[] = {
753 {
754 .name = "vcc_core",
755 .id = MAX1586_V3,
756 .platform_data = &balloon3_max1587a_v3_info,
757 }
758 };
759
760 static struct max1586_platform_data balloon3_max1587a_info = {
761 .subdevs = balloon3_max1587a_subdevs,
762 .num_subdevs = ARRAY_SIZE(balloon3_max1587a_subdevs),
763 .v3_gain = MAX1586_GAIN_R24_3k32, /* 730..1550 mV */
764 };
765
766 static struct i2c_board_info __initdata balloon3_pi2c_board_info[] = {
767 {
768 I2C_BOARD_INFO("max1586", 0x14),
769 .platform_data = &balloon3_max1587a_info,
770 },
771 };
772
balloon3_pmic_init(void)773 static void __init balloon3_pmic_init(void)
774 {
775 pxa27x_set_i2c_power_info(NULL);
776 i2c_register_board_info(1, ARRAY_AND_SIZE(balloon3_pi2c_board_info));
777 }
778 #else
balloon3_pmic_init(void)779 static inline void balloon3_pmic_init(void) {}
780 #endif
781
782 /******************************************************************************
783 * Machine init
784 ******************************************************************************/
balloon3_init(void)785 static void __init balloon3_init(void)
786 {
787 ARB_CNTRL = ARB_CORE_PARK | 0x234;
788
789 pxa2xx_mfp_config(ARRAY_AND_SIZE(balloon3_pin_config));
790
791 pxa_set_ffuart_info(NULL);
792 pxa_set_btuart_info(NULL);
793 pxa_set_stuart_info(NULL);
794
795 balloon3_i2c_init();
796 balloon3_irda_init();
797 balloon3_lcd_init();
798 balloon3_leds_init();
799 balloon3_mmc_init();
800 balloon3_nand_init();
801 balloon3_nor_init();
802 balloon3_pmic_init();
803 balloon3_ts_init();
804 balloon3_udc_init();
805 balloon3_uhc_init();
806 balloon3_cf_init();
807 }
808
809 static struct map_desc balloon3_io_desc[] __initdata = {
810 { /* CPLD/FPGA */
811 .virtual = (unsigned long)BALLOON3_FPGA_VIRT,
812 .pfn = __phys_to_pfn(BALLOON3_FPGA_PHYS),
813 .length = BALLOON3_FPGA_LENGTH,
814 .type = MT_DEVICE,
815 },
816 };
817
balloon3_map_io(void)818 static void __init balloon3_map_io(void)
819 {
820 pxa27x_map_io();
821 iotable_init(balloon3_io_desc, ARRAY_SIZE(balloon3_io_desc));
822 }
823
824 MACHINE_START(BALLOON3, "Balloon3")
825 /* Maintainer: Nick Bane. */
826 .map_io = balloon3_map_io,
827 .nr_irqs = BALLOON3_NR_IRQS,
828 .init_irq = balloon3_init_irq,
829 .handle_irq = pxa27x_handle_irq,
830 .timer = &pxa_timer,
831 .init_machine = balloon3_init,
832 .atag_offset = 0x100,
833 .restart = pxa_restart,
834 MACHINE_END
835