summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-omap2/board-overo.c
blob: b75bdcd47117cffca17dab3b58f3f981cdd51be8 (plain)
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
/*
 * board-overo.c (Gumstix Overo)
 *
 * Initial code: Steve Sakoman <steve@sakoman.com>
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/i2c/twl.h>
#include <linux/regulator/machine.h>

#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/mmc/host.h>

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

#include <plat/board.h>
#include <plat/common.h>
#include <mach/gpio.h>
#include <plat/gpmc.h>
#include <mach/hardware.h>
#include <plat/nand.h>
#include <plat/usb.h>

#include "mux.h"
#include "sdram-micron-mt46h32m32lf-6.h"
#include "hsmmc.h"

#define OVERO_GPIO_BT_XGATE	15
#define OVERO_GPIO_W2W_NRESET	16
#define OVERO_GPIO_PENDOWN	114
#define OVERO_GPIO_BT_NRESET	164
#define OVERO_GPIO_USBH_CPEN	168
#define OVERO_GPIO_USBH_NRESET	183

#define NAND_BLOCK_SIZE SZ_128K

#define OVERO_SMSC911X_CS      5
#define OVERO_SMSC911X_GPIO    176
#define OVERO_SMSC911X2_CS     4
#define OVERO_SMSC911X2_GPIO   65

#if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
	defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)

#include <plat/mcspi.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>

static struct omap2_mcspi_device_config ads7846_mcspi_config = {
	.turbo_mode	= 0,
	.single_channel	= 1,	/* 0: slave, 1: master */
};

static int ads7846_get_pendown_state(void)
{
	return !gpio_get_value(OVERO_GPIO_PENDOWN);
}

static struct ads7846_platform_data ads7846_config = {
	.x_max			= 0x0fff,
	.y_max			= 0x0fff,
	.x_plate_ohms		= 180,
	.pressure_max		= 255,
	.debounce_max		= 10,
	.debounce_tol		= 3,
	.debounce_rep		= 1,
	.get_pendown_state	= ads7846_get_pendown_state,
	.keep_vref_on		= 1,
};

static struct spi_board_info overo_spi_board_info[] __initdata = {
	{
		.modalias		= "ads7846",
		.bus_num		= 1,
		.chip_select		= 0,
		.max_speed_hz		= 1500000,
		.controller_data	= &ads7846_mcspi_config,
		.irq			= OMAP_GPIO_IRQ(OVERO_GPIO_PENDOWN),
		.platform_data		= &ads7846_config,
	}
};

static void __init overo_ads7846_init(void)
{
	if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
	    (gpio_direction_input(OVERO_GPIO_PENDOWN) == 0)) {
		gpio_export(OVERO_GPIO_PENDOWN, 0);
	} else {
		printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");
		return;
	}

	spi_register_board_info(overo_spi_board_info,
			ARRAY_SIZE(overo_spi_board_info));
}

#else
static inline void __init overo_ads7846_init(void) { return; }
#endif

#if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)

#include <linux/smsc911x.h>

static struct resource overo_smsc911x_resources[] = {
	{
		.name	= "smsc911x-memory",
		.flags	= IORESOURCE_MEM,
	},
	{
		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
	},
};

static struct resource overo_smsc911x2_resources[] = {
	{
		.name	= "smsc911x2-memory",
		.flags	= IORESOURCE_MEM,
	},
	{
		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
	},
};

static struct smsc911x_platform_config overo_smsc911x_config = {
	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
	.irq_type	= SMSC911X_IRQ_TYPE_OPEN_DRAIN,
	.flags		= SMSC911X_USE_32BIT ,
	.phy_interface	= PHY_INTERFACE_MODE_MII,
};

static struct platform_device overo_smsc911x_device = {
	.name		= "smsc911x",
	.id		= 0,
	.num_resources	= ARRAY_SIZE(overo_smsc911x_resources),
	.resource	= overo_smsc911x_resources,
	.dev		= {
		.platform_data = &overo_smsc911x_config,
	},
};

static struct platform_device overo_smsc911x2_device = {
	.name		= "smsc911x",
	.id		= 1,
	.num_resources	= ARRAY_SIZE(overo_smsc911x2_resources),
	.resource	= overo_smsc911x2_resources,
	.dev		= {
		.platform_data = &overo_smsc911x_config,
	},
};

static struct platform_device *smsc911x_devices[] = {
	&overo_smsc911x_device,
	&overo_smsc911x2_device,
};

static inline void __init overo_init_smsc911x(void)
{
	unsigned long cs_mem_base, cs_mem_base2;

	/* set up first smsc911x chip */

	if (gpmc_cs_request(OVERO_SMSC911X_CS, SZ_16M, &cs_mem_base) < 0) {
		printk(KERN_ERR "Failed request for GPMC mem for smsc911x\n");
		return;
	}

	overo_smsc911x_resources[0].start = cs_mem_base + 0x0;
	overo_smsc911x_resources[0].end   = cs_mem_base + 0xff;

	if ((gpio_request(OVERO_SMSC911X_GPIO, "SMSC911X IRQ") == 0) &&
	    (gpio_direction_input(OVERO_SMSC911X_GPIO) == 0)) {
		gpio_export(OVERO_SMSC911X_GPIO, 0);
	} else {
		printk(KERN_ERR "could not obtain gpio for SMSC911X IRQ\n");
		return;
	}

	overo_smsc911x_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X_GPIO);
	overo_smsc911x_resources[1].end	  = 0;

	/* set up second smsc911x chip */

	if (gpmc_cs_request(OVERO_SMSC911X2_CS, SZ_16M, &cs_mem_base2) < 0) {
		printk(KERN_ERR "Failed request for GPMC mem for smsc911x2\n");
		return;
	}

	overo_smsc911x2_resources[0].start = cs_mem_base2 + 0x0;
	overo_smsc911x2_resources[0].end   = cs_mem_base2 + 0xff;

	if ((gpio_request(OVERO_SMSC911X2_GPIO, "SMSC911X2 IRQ") == 0) &&
	    (gpio_direction_input(OVERO_SMSC911X2_GPIO) == 0)) {
		gpio_export(OVERO_SMSC911X2_GPIO, 0);
	} else {
		printk(KERN_ERR "could not obtain gpio for SMSC911X2 IRQ\n");
		return;
	}

	overo_smsc911x2_resources[1].start = OMAP_GPIO_IRQ(OVERO_SMSC911X2_GPIO);
	overo_smsc911x2_resources[1].end   = 0;

	platform_add_devices(smsc911x_devices, ARRAY_SIZE(smsc911x_devices));
}

#else
static inline void __init overo_init_smsc911x(void) { return; }
#endif

static struct mtd_partition overo_nand_partitions[] = {
	{
		.name           = "xloader",
		.offset         = 0,			/* Offset = 0x00000 */
		.size           = 4 * NAND_BLOCK_SIZE,
		.mask_flags     = MTD_WRITEABLE
	},
	{
		.name           = "uboot",
		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
		.size           = 14 * NAND_BLOCK_SIZE,
	},
	{
		.name           = "uboot environment",
		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x240000 */
		.size           = 2 * NAND_BLOCK_SIZE,
	},
	{
		.name           = "linux",
		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x280000 */
		.size           = 32 * NAND_BLOCK_SIZE,
	},
	{
		.name           = "rootfs",
		.offset         = MTDPART_OFS_APPEND,	/* Offset = 0x680000 */
		.size           = MTDPART_SIZ_FULL,
	},
};

static struct omap_nand_platform_data overo_nand_data = {
	.parts = overo_nand_partitions,
	.nr_parts = ARRAY_SIZE(overo_nand_partitions),
	.dma_channel = -1,	/* disable DMA in OMAP NAND driver */
};

static void __init overo_flash_init(void)
{
	u8 cs = 0;
	u8 nandcs = GPMC_CS_NUM + 1;

	/* find out the chip-select on which NAND exists */
	while (cs < GPMC_CS_NUM) {
		u32 ret = 0;
		ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);

		if ((ret & 0xC00) == 0x800) {
			printk(KERN_INFO "Found NAND on CS%d\n", cs);
			if (nandcs > GPMC_CS_NUM)
				nandcs = cs;
		}
		cs++;
	}

	if (nandcs > GPMC_CS_NUM) {
		printk(KERN_INFO "NAND: Unable to find configuration "
				 "in GPMC\n ");
		return;
	}

	if (nandcs < GPMC_CS_NUM) {
		overo_nand_data.cs = nandcs;

		printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
		if (gpmc_nand_init(&overo_nand_data) < 0)
			printk(KERN_ERR "Unable to register NAND device\n");
	}
}

static struct omap2_hsmmc_info mmc[] = {
	{
		.mmc		= 1,
		.caps		= MMC_CAP_4_BIT_DATA,
		.gpio_cd	= -EINVAL,
		.gpio_wp	= -EINVAL,
	},
	{
		.mmc		= 2,
		.caps		= MMC_CAP_4_BIT_DATA,
		.gpio_cd	= -EINVAL,
		.gpio_wp	= -EINVAL,
		.transceiver	= true,
		.ocr_mask	= 0x00100000,	/* 3.3V */
	},
	{}	/* Terminator */
};

static struct regulator_consumer_supply overo_vmmc1_supply = {
	.supply			= "vmmc",
};

static int overo_twl_gpio_setup(struct device *dev,
		unsigned gpio, unsigned ngpio)
{
	omap2_hsmmc_init(mmc);

	overo_vmmc1_supply.dev = mmc[0].dev;

	return 0;
}

static struct twl4030_gpio_platform_data overo_gpio_data = {
	.gpio_base	= OMAP_MAX_GPIO_LINES,
	.irq_base	= TWL4030_GPIO_IRQ_BASE,
	.irq_end	= TWL4030_GPIO_IRQ_END,
	.setup		= overo_twl_gpio_setup,
};

static struct twl4030_usb_data overo_usb_data = {
	.usb_mode	= T2_USB_MODE_ULPI,
};

static struct regulator_init_data overo_vmmc1 = {
	.constraints = {
		.min_uV			= 1850000,
		.max_uV			= 3150000,
		.valid_modes_mask	= REGULATOR_MODE_NORMAL
					| REGULATOR_MODE_STANDBY,
		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
					| REGULATOR_CHANGE_MODE
					| REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies	= 1,
	.consumer_supplies	= &overo_vmmc1_supply,
};

static struct twl4030_codec_audio_data overo_audio_data = {
	.audio_mclk = 26000000,
};

static struct twl4030_codec_data overo_codec_data = {
	.audio_mclk = 26000000,
	.audio = &overo_audio_data,
};

/* mmc2 (WLAN) and Bluetooth don't use twl4030 regulators */

static struct twl4030_platform_data overo_twldata = {
	.irq_base	= TWL4030_IRQ_BASE,
	.irq_end	= TWL4030_IRQ_END,
	.gpio		= &overo_gpio_data,
	.usb		= &overo_usb_data,
	.codec		= &overo_codec_data,
	.vmmc1		= &overo_vmmc1,
};

static struct i2c_board_info __initdata overo_i2c_boardinfo[] = {
	{
		I2C_BOARD_INFO("tps65950", 0x48),
		.flags = I2C_CLIENT_WAKE,
		.irq = INT_34XX_SYS_NIRQ,
		.platform_data = &overo_twldata,
	},
};

static int __init overo_i2c_init(void)
{
	omap_register_i2c_bus(1, 2600, overo_i2c_boardinfo,
			ARRAY_SIZE(overo_i2c_boardinfo));
	/* i2c2 pins are used for gpio */
	omap_register_i2c_bus(3, 400, NULL, 0);
	return 0;
}

static struct platform_device overo_lcd_device = {
	.name		= "overo_lcd",
	.id		= -1,
};

static struct omap_lcd_config overo_lcd_config __initdata = {
	.ctrl_name	= "internal",
};

static struct omap_board_config_kernel overo_config[] __initdata = {
	{ OMAP_TAG_LCD,		&overo_lcd_config },
};

static void __init overo_init_irq(void)
{
	omap_board_config = overo_config;
	omap_board_config_size = ARRAY_SIZE(overo_config);
	omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
			     mt46h32m32lf6_sdrc_params);
	omap_init_irq();
}

static struct platform_device *overo_devices[] __initdata = {
	&overo_lcd_device,
};

static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
	.port_mode[0] = EHCI_HCD_OMAP_MODE_UNKNOWN,
	.port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
	.port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,

	.phy_reset  = true,
	.reset_gpio_port[0]  = -EINVAL,
	.reset_gpio_port[1]  = OVERO_GPIO_USBH_NRESET,
	.reset_gpio_port[2]  = -EINVAL
};

#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
	{ .reg_offset = OMAP_MUX_TERMINATOR },
};
#endif

static struct omap_musb_board_data musb_board_data = {
	.interface_type		= MUSB_INTERFACE_ULPI,
	.mode			= MUSB_OTG,
	.power			= 100,
};

static void __init overo_init(void)
{
	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
	overo_i2c_init();
	platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
	omap_serial_init();
	overo_flash_init();
	usb_musb_init(&musb_board_data);
	usb_ehci_init(&ehci_pdata);
	overo_ads7846_init();
	overo_init_smsc911x();

	/* Ensure SDRC pins are mux'd for self-refresh */
	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
	omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);

	if ((gpio_request(OVERO_GPIO_W2W_NRESET,
			  "OVERO_GPIO_W2W_NRESET") == 0) &&
	    (gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
		gpio_export(OVERO_GPIO_W2W_NRESET, 0);
		gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
		udelay(10);
		gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
	} else {
		printk(KERN_ERR "could not obtain gpio for "
					"OVERO_GPIO_W2W_NRESET\n");
	}

	if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
	    (gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
		gpio_export(OVERO_GPIO_BT_XGATE, 0);
	else
		printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");

	if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
	    (gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
		gpio_export(OVERO_GPIO_BT_NRESET, 0);
		gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
		mdelay(6);
		gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
	} else {
		printk(KERN_ERR "could not obtain gpio for "
					"OVERO_GPIO_BT_NRESET\n");
	}

	if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
	    (gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
		gpio_export(OVERO_GPIO_USBH_CPEN, 0);
	else
		printk(KERN_ERR "could not obtain gpio for "
					"OVERO_GPIO_USBH_CPEN\n");
}

MACHINE_START(OVERO, "Gumstix Overo")
	.boot_params	= 0x80000100,
	.map_io		= omap3_map_io,
	.reserve	= omap_reserve,
	.init_irq	= overo_init_irq,
	.init_machine	= overo_init,
	.timer		= &omap_timer,
MACHINE_END
OpenPOWER on IntegriCloud