Bootlin logo

Elixir Cross Referencer

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
/*
 *  linux/arch/arm/mach-pxa/lubbock.c
 *
 *  Support for the Intel DBPXA250 Development Platform.
 *
 *  Author:	Nicolas Pitre
 *  Created:	Jun 15, 2001
 *  Copyright:	MontaVista Software Inc.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 2 as
 *  published by the Free Software Foundation.
 */
#include <linux/clkdev.h>
#include <linux/gpio.h>
#include <linux/gpio/machine.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/syscore_ops.h>
#include <linux/major.h>
#include <linux/fb.h>
#include <linux/interrupt.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/smc91x.h>
#include <linux/slab.h>
#include <linux/leds.h>

#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>
#include <linux/spi/pxa2xx_spi.h>

#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/sizes.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/mach/flash.h>

#include <asm/hardware/sa1111.h>

#include <mach/pxa25x.h>
#include <mach/audio.h>
#include <mach/lubbock.h>
#include <mach/udc.h>
#include <linux/platform_data/irda-pxaficp.h>
#include <linux/platform_data/video-pxafb.h>
#include <linux/platform_data/mmc-pxamci.h>
#include <mach/pm.h>
#include <mach/smemc.h>

#include "generic.h"
#include "devices.h"

static unsigned long lubbock_pin_config[] __initdata = {
	GPIO15_nCS_1,	/* CS1 - Flash */
	GPIO78_nCS_2,	/* CS2 - Baseboard FGPA */
	GPIO79_nCS_3,	/* CS3 - SMC ethernet */
	GPIO80_nCS_4,	/* CS4 - SA1111 */

	/* SSP data pins */
	GPIO23_SSP1_SCLK,
	GPIO25_SSP1_TXD,
	GPIO26_SSP1_RXD,

	/* AC97 */
	GPIO28_AC97_BITCLK,
	GPIO29_AC97_SDATA_IN_0,
	GPIO30_AC97_SDATA_OUT,
	GPIO31_AC97_SYNC,

	/* LCD - 16bpp DSTN */
	GPIOxx_LCD_DSTN_16BPP,

	/* BTUART */
	GPIO42_BTUART_RXD,
	GPIO43_BTUART_TXD,
	GPIO44_BTUART_CTS,
	GPIO45_BTUART_RTS,

	/* PC Card */
	GPIO48_nPOE,
	GPIO49_nPWE,
	GPIO50_nPIOR,
	GPIO51_nPIOW,
	GPIO52_nPCE_1,
	GPIO53_nPCE_2,
	GPIO54_nPSKTSEL,
	GPIO55_nPREG,
	GPIO56_nPWAIT,
	GPIO57_nIOIS16,

	/* MMC */
	GPIO6_MMC_CLK,
	GPIO8_MMC_CS0,

	/* SA1111 chip */
	GPIO11_3_6MHz,

	/* wakeup */
	GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
};

#define LUB_HEXLED		__LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
#define LUB_MISC_WR		__LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)

void lubbock_set_hexled(uint32_t value)
{
	LUB_HEXLED = value;
}

void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
{
	unsigned long flags;

	local_irq_save(flags);
	LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
	local_irq_restore(flags);
}
EXPORT_SYMBOL(lubbock_set_misc_wr);

static int lubbock_udc_is_connected(void)
{
	return (LUB_MISC_RD & (1 << 9)) == 0;
}

static struct pxa2xx_udc_mach_info udc_info __initdata = {
	.udc_is_connected	= lubbock_udc_is_connected,
	// no D+ pullup; lubbock can't connect/disconnect in software
};

static struct resource sa1111_resources[] = {
	[0] = {
		.start	= 0x10000000,
		.end	= 0x10001fff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= LUBBOCK_SA1111_IRQ,
		.end	= LUBBOCK_SA1111_IRQ,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct sa1111_platform_data sa1111_info = {
	.irq_base	= LUBBOCK_SA1111_IRQ_BASE,
	.disable_devs	= SA1111_DEVID_SAC,
};

static struct platform_device sa1111_device = {
	.name		= "sa1111",
	.id		= -1,
	.num_resources	= ARRAY_SIZE(sa1111_resources),
	.resource	= sa1111_resources,
	.dev		= {
		.platform_data	= &sa1111_info,
	},
};

/* ADS7846 is connected through SSP ... and if your board has J5 populated,
 * you can select it to replace the ucb1400 by switching the touchscreen cable
 * (to J5) and poking board registers (as done below).  Else it's only useful
 * for the temperature sensors.
 */
static struct pxa2xx_spi_master pxa_ssp_master_info = {
	.num_chipselect	= 1,
};

static int lubbock_ads7846_pendown_state(void)
{
	/* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
	return 0;
}

static struct ads7846_platform_data ads_info = {
	.model			= 7846,
	.vref_delay_usecs	= 100,		/* internal, no cap */
	.get_pendown_state	= lubbock_ads7846_pendown_state,
	// .x_plate_ohms		= 500,	/* GUESS! */
	// .y_plate_ohms		= 500,	/* GUESS! */
};

static void ads7846_cs(u32 command)
{
	static const unsigned	TS_nCS = 1 << 11;
	lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
}

static struct pxa2xx_spi_chip ads_hw = {
	.tx_threshold		= 1,
	.rx_threshold		= 2,
	.cs_control		= ads7846_cs,
};

static struct spi_board_info spi_board_info[] __initdata = { {
	.modalias	= "ads7846",
	.platform_data	= &ads_info,
	.controller_data = &ads_hw,
	.irq		= LUBBOCK_BB_IRQ,
	.max_speed_hz	= 120000 /* max sample rate at 3V */
				* 26 /* command + data + overhead */,
	.bus_num	= 1,
	.chip_select	= 0,
},
};

static struct resource smc91x_resources[] = {
	[0] = {
		.name	= "smc91x-regs",
		.start	= 0x0c000c00,
		.end	= 0x0c0fffff,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= LUBBOCK_ETH_IRQ,
		.end	= LUBBOCK_ETH_IRQ,
		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
	},
	[2] = {
		.name	= "smc91x-attrib",
		.start	= 0x0e000000,
		.end	= 0x0e0fffff,
		.flags	= IORESOURCE_MEM,
	},
};

static struct smc91x_platdata lubbock_smc91x_info = {
	.flags	= SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
};

static struct platform_device smc91x_device = {
	.name		= "smc91x",
	.id		= -1,
	.num_resources	= ARRAY_SIZE(smc91x_resources),
	.resource	= smc91x_resources,
	.dev		= {
		.platform_data = &lubbock_smc91x_info,
	},
};

static struct resource flash_resources[] = {
	[0] = {
		.start	= 0x00000000,
		.end	= SZ_64M - 1,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= 0x04000000,
		.end	= 0x04000000 + SZ_64M - 1,
		.flags	= IORESOURCE_MEM,
	},
};

static struct mtd_partition lubbock_partitions[] = {
	{
		.name =		"Bootloader",
		.size =		0x00040000,
		.offset =	0,
		.mask_flags =	MTD_WRITEABLE  /* force read-only */
	},{
		.name =		"Kernel",
		.size =		0x00100000,
		.offset =	0x00040000,
	},{
		.name =		"Filesystem",
		.size =		MTDPART_SIZ_FULL,
		.offset =	0x00140000
	}
};

static struct flash_platform_data lubbock_flash_data[2] = {
	{
		.map_name	= "cfi_probe",
		.parts		= lubbock_partitions,
		.nr_parts	= ARRAY_SIZE(lubbock_partitions),
	}, {
		.map_name	= "cfi_probe",
		.parts		= NULL,
		.nr_parts	= 0,
	}
};

static struct platform_device lubbock_flash_device[2] = {
	{
		.name		= "pxa2xx-flash",
		.id		= 0,
		.dev = {
			.platform_data = &lubbock_flash_data[0],
		},
		.resource = &flash_resources[0],
		.num_resources = 1,
	},
	{
		.name		= "pxa2xx-flash",
		.id		= 1,
		.dev = {
			.platform_data = &lubbock_flash_data[1],
		},
		.resource = &flash_resources[1],
		.num_resources = 1,
	},
};

static struct resource lubbock_cplds_resources[] = {
	[0] = {
		.start	= LUBBOCK_FPGA_PHYS + 0xc0,
		.end	= LUBBOCK_FPGA_PHYS + 0xe0 - 1,
		.flags	= IORESOURCE_MEM,
	},
	[1] = {
		.start	= PXA_GPIO_TO_IRQ(0),
		.end	= PXA_GPIO_TO_IRQ(0),
		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
	},
	[2] = {
		.start	= LUBBOCK_IRQ(0),
		.end	= LUBBOCK_IRQ(6),
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device lubbock_cplds_device = {
	.name		= "pxa_cplds_irqs",
	.id		= -1,
	.resource	= &lubbock_cplds_resources[0],
	.num_resources	= 3,
};


static struct platform_device *devices[] __initdata = {
	&sa1111_device,
	&smc91x_device,
	&lubbock_flash_device[0],
	&lubbock_flash_device[1],
	&lubbock_cplds_device,
};

static struct pxafb_mode_info sharp_lm8v31_mode = {
	.pixclock	= 270000,
	.xres		= 640,
	.yres		= 480,
	.bpp		= 16,
	.hsync_len	= 1,
	.left_margin	= 3,
	.right_margin	= 3,
	.vsync_len	= 1,
	.upper_margin	= 0,
	.lower_margin	= 0,
	.sync		= FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
	.cmap_greyscale	= 0,
};

static struct pxafb_mach_info sharp_lm8v31 = {
	.modes		= &sharp_lm8v31_mode,
	.num_modes	= 1,
	.cmap_inverse	= 0,
	.cmap_static	= 0,
	.lcd_conn	= LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
			  LCD_AC_BIAS_FREQ(255),
};

#define	MMC_POLL_RATE		msecs_to_jiffies(1000)

static void lubbock_mmc_poll(unsigned long);
static irq_handler_t mmc_detect_int;

static struct timer_list mmc_timer = {
	.function	= lubbock_mmc_poll,
};

static void lubbock_mmc_poll(unsigned long data)
{
	unsigned long flags;

	/* clear any previous irq state, then ... */
	local_irq_save(flags);
	LUB_IRQ_SET_CLR &= ~(1 << 0);
	local_irq_restore(flags);

	/* poll until mmc/sd card is removed */
	if (LUB_IRQ_SET_CLR & (1 << 0))
		mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
	else {
		(void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
		enable_irq(LUBBOCK_SD_IRQ);
	}
}

static irqreturn_t lubbock_detect_int(int irq, void *data)
{
	/* IRQ is level triggered; disable, and poll for removal */
	disable_irq(irq);
	mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);

	return mmc_detect_int(irq, data);
}

static int lubbock_mci_init(struct device *dev,
		irq_handler_t detect_int,
		void *data)
{
	/* detect card insert/eject */
	mmc_detect_int = detect_int;
	init_timer(&mmc_timer);
	mmc_timer.data = (unsigned long) data;
	return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
			   0, "lubbock-sd-detect", data);
}

static int lubbock_mci_get_ro(struct device *dev)
{
	return (LUB_MISC_RD & (1 << 2)) != 0;
}

static void lubbock_mci_exit(struct device *dev, void *data)
{
	free_irq(LUBBOCK_SD_IRQ, data);
	del_timer_sync(&mmc_timer);
}

static struct pxamci_platform_data lubbock_mci_platform_data = {
	.ocr_mask		= MMC_VDD_32_33|MMC_VDD_33_34,
	.detect_delay_ms	= 10,
	.init 			= lubbock_mci_init,
	.get_ro			= lubbock_mci_get_ro,
	.exit 			= lubbock_mci_exit,
	.gpio_card_detect	= -1,
	.gpio_card_ro		= -1,
	.gpio_power		= -1,
};

static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
{
	unsigned long flags;

	local_irq_save(flags);
	if (mode & IR_SIRMODE) {
		LUB_MISC_WR &= ~(1 << 4);
	} else if (mode & IR_FIRMODE) {
		LUB_MISC_WR |= 1 << 4;
	}
	pxa2xx_transceiver_mode(dev, mode);
	local_irq_restore(flags);
}

static struct pxaficp_platform_data lubbock_ficp_platform_data = {
	.gpio_pwdown		= -1,
	.transceiver_cap	= IR_SIRMODE | IR_FIRMODE,
	.transceiver_mode	= lubbock_irda_transceiver_mode,
};

static void __init lubbock_init(void)
{
	int flashboot = (LUB_CONF_SWITCHES & 1);

	pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));

	pxa_set_ffuart_info(NULL);
	pxa_set_btuart_info(NULL);
	pxa_set_stuart_info(NULL);

	clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
	pxa_set_udc_info(&udc_info);
	pxa_set_fb_info(NULL, &sharp_lm8v31);
	pxa_set_mci_info(&lubbock_mci_platform_data);
	pxa_set_ficp_info(&lubbock_ficp_platform_data);
	pxa_set_ac97_info(NULL);

	lubbock_flash_data[0].width = lubbock_flash_data[1].width =
		(__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
	/* Compensate for the nROMBT switch which swaps the flash banks */
	printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
	       flashboot?"Flash":"ROM", flashboot);

	lubbock_flash_data[flashboot^1].name = "application-flash";
	lubbock_flash_data[flashboot].name = "boot-rom";
	(void) platform_add_devices(devices, ARRAY_SIZE(devices));

	pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
	spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
}

static struct map_desc lubbock_io_desc[] __initdata = {
  	{	/* CPLD */
		.virtual	=  LUBBOCK_FPGA_VIRT,
		.pfn		= __phys_to_pfn(LUBBOCK_FPGA_PHYS),
		.length		= 0x00100000,
		.type		= MT_DEVICE
	}
};

static void __init lubbock_map_io(void)
{
	pxa25x_map_io();
	iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));

	PCFR |= PCFR_OPDE;
}

/*
 * Driver for the 8 discrete LEDs available for general use:
 * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
 * so be sure to not monkey with them here.
 */

#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
struct lubbock_led {
	struct led_classdev	cdev;
	u8			mask;
};

/*
 * The triggers lines up below will only be used if the
 * LED triggers are compiled in.
 */
static const struct {
	const char *name;
	const char *trigger;
} lubbock_leds[] = {
	{ "lubbock:D28", "default-on", },
	{ "lubbock:D27", "cpu0", },
	{ "lubbock:D26", "heartbeat" },
	{ "lubbock:D25", },
	{ "lubbock:D24", },
	{ "lubbock:D23", },
	{ "lubbock:D22", },
	{ "lubbock:D21", },
};

static void lubbock_led_set(struct led_classdev *cdev,
			      enum led_brightness b)
{
	struct lubbock_led *led = container_of(cdev,
					 struct lubbock_led, cdev);
	u32 reg = LUB_DISC_BLNK_LED;

	if (b != LED_OFF)
		reg |= led->mask;
	else
		reg &= ~led->mask;

	LUB_DISC_BLNK_LED = reg;
}

static enum led_brightness lubbock_led_get(struct led_classdev *cdev)
{
	struct lubbock_led *led = container_of(cdev,
					 struct lubbock_led, cdev);
	u32 reg = LUB_DISC_BLNK_LED;

	return (reg & led->mask) ? LED_FULL : LED_OFF;
}

static int __init lubbock_leds_init(void)
{
	int i;

	if (!machine_is_lubbock())
		return -ENODEV;

	/* All ON */
	LUB_DISC_BLNK_LED |= 0xff;
	for (i = 0; i < ARRAY_SIZE(lubbock_leds); i++) {
		struct lubbock_led *led;

		led = kzalloc(sizeof(*led), GFP_KERNEL);
		if (!led)
			break;

		led->cdev.name = lubbock_leds[i].name;
		led->cdev.brightness_set = lubbock_led_set;
		led->cdev.brightness_get = lubbock_led_get;
		led->cdev.default_trigger = lubbock_leds[i].trigger;
		led->mask = BIT(i);

		if (led_classdev_register(NULL, &led->cdev) < 0) {
			kfree(led);
			break;
		}
	}

	return 0;
}

/*
 * Since we may have triggers on any subsystem, defer registration
 * until after subsystem_init.
 */
fs_initcall(lubbock_leds_init);
#endif

MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
	/* Maintainer: MontaVista Software Inc. */
	.map_io		= lubbock_map_io,
	.nr_irqs	= LUBBOCK_NR_IRQS,
	.init_irq	= pxa25x_init_irq,
	.handle_irq	= pxa25x_handle_irq,
	.init_time	= pxa_timer_init,
	.init_machine	= lubbock_init,
	.restart	= pxa_restart,
MACHINE_END