aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-omap2/board-omap3touchbook.c
blob: a0b851aafccad1bc87d900d9474cfa689e8cf39d (plain) (blame)
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
/*
 * linux/arch/arm/mach-omap2/board-omap3touchbook.c
 *
 * Copyright (C) 2009 Always Innovating
 *
 * Modified from mach-omap2/board-omap3beagleboard.c
 *
 * Initial code: Grégoire Gentil, Tim Yamin
 *
 * 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/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>

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

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

#include <linux/spi/ads7846.h>

#include <linux/regulator/machine.h>
#include <linux/i2c/twl.h>

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

#include <plat/board.h>
#include "common.h"
#include <plat/gpmc.h>
#include <plat/nand.h>
#include <plat/usb.h>

#include "mux.h"
#include "hsmmc.h"
#include "common-board-devices.h"

#include <asm/setup.h>

#define OMAP3_AC_GPIO		136
#define OMAP3_TS_GPIO		162
#define TB_BL_PWM_TIMER		9
#define TB_KILL_POWER_GPIO	168

static unsigned long touchbook_revision;

static struct mtd_partition omap3touchbook_nand_partitions[] = {
	/* All the partition sizes are listed in terms of NAND block size */
	{
		.name		= "X-Loader",
		.offset		= 0,
		.size		= 4 * NAND_BLOCK_SIZE,
		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
	},
	{
		.name		= "U-Boot",
		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
		.size		= 15 * NAND_BLOCK_SIZE,
		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
	},
	{
		.name		= "U-Boot Env",
		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x260000 */
		.size		= 1 * NAND_BLOCK_SIZE,
	},
	{
		.name		= "Kernel",
		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x280000 */
		.size		= 32 * NAND_BLOCK_SIZE,
	},
	{
		.name		= "File System",
		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x680000 */
		.size		= MTDPART_SIZ_FULL,
	},
};

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

static struct omap2_hsmmc_info mmc[] = {
	{
		.mmc		= 1,
		.caps		= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
		.gpio_wp	= 29,
	},
	{}	/* Terminator */
};

static struct regulator_consumer_supply touchbook_vmmc1_supply[] = {
	REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
};

static struct regulator_consumer_supply touchbook_vsim_supply[] = {
	REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
};

static struct gpio_led gpio_leds[];

static int touchbook_twl_gpio_setup(struct device *dev,
		unsigned gpio, unsigned ngpio)
{
	if (system_rev >= 0x20 && system_rev <= 0x34301000) {
		omap_mux_init_gpio(23, OMAP_PIN_INPUT);
		mmc[0].gpio_wp = 23;
	} else {
		omap_mux_init_gpio(29, OMAP_PIN_INPUT);
	}
	/* gpio + 0 is "mmc0_cd" (input/IRQ) */
	mmc[0].gpio_cd = gpio + 0;
	omap2_hsmmc_init(mmc);

	/* REVISIT: need ehci-omap hooks for external VBUS
	 * power switch and overcurrent detect
	 */
	gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC");

	/* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
	gpio_request_one(gpio + TWL4030_GPIO_MAX, GPIOF_OUT_INIT_LOW,
			 "nEN_USB_PWR");

	/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
	gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;

	return 0;
}

static struct twl4030_gpio_platform_data touchbook_gpio_data = {
	.gpio_base	= OMAP_MAX_GPIO_LINES,
	.irq_base	= TWL4030_GPIO_IRQ_BASE,
	.irq_end	= TWL4030_GPIO_IRQ_END,
	.use_leds	= true,
	.pullups	= BIT(1),
	.pulldowns	= BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
				| BIT(15) | BIT(16) | BIT(17),
	.setup		= touchbook_twl_gpio_setup,
};

static struct regulator_consumer_supply touchbook_vdac_supply[] = {
{
	.supply		= "vdac",
},
};

static struct regulator_consumer_supply touchbook_vdvi_supply[] = {
{
	.supply		= "vdvi",
},
};

/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
static struct regulator_init_data touchbook_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	= ARRAY_SIZE(touchbook_vmmc1_supply),
	.consumer_supplies	= touchbook_vmmc1_supply,
};

/* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
static struct regulator_init_data touchbook_vsim = {
	.constraints = {
		.min_uV			= 1800000,
		.max_uV			= 3000000,
		.valid_modes_mask	= REGULATOR_MODE_NORMAL
					| REGULATOR_MODE_STANDBY,
		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
					| REGULATOR_CHANGE_MODE
					| REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies	= ARRAY_SIZE(touchbook_vsim_supply),
	.consumer_supplies	= touchbook_vsim_supply,
};

static struct twl4030_platform_data touchbook_twldata = {
	/* platform_data for children goes here */
	.gpio		= &touchbook_gpio_data,
	.vmmc1		= &touchbook_vmmc1,
	.vsim		= &touchbook_vsim,
};

static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
	{
		I2C_BOARD_INFO("bq27200", 0x55),
	},
};

static int __init omap3_touchbook_i2c_init(void)
{
	/* Standard TouchBook bus */
	omap3_pmic_get_config(&touchbook_twldata,
			TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
			TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);

	touchbook_twldata.vdac->num_consumer_supplies =
					ARRAY_SIZE(touchbook_vdac_supply);
	touchbook_twldata.vdac->consumer_supplies = touchbook_vdac_supply;

	touchbook_twldata.vpll2->constraints.name = "VDVI";
	touchbook_twldata.vpll2->num_consumer_supplies =
					ARRAY_SIZE(touchbook_vdvi_supply);
	touchbook_twldata.vpll2->consumer_supplies = touchbook_vdvi_supply;

	omap3_pmic_init("twl4030", &touchbook_twldata);
	/* Additional TouchBook bus */
	omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
			ARRAY_SIZE(touchBook_i2c_boardinfo));

	return 0;
}

static struct ads7846_platform_data ads7846_pdata = {
	.x_min			= 100,
	.y_min			= 265,
	.x_max			= 3950,
	.y_max			= 3750,
	.x_plate_ohms		= 40,
	.pressure_max		= 255,
	.debounce_max		= 10,
	.debounce_tol		= 5,
	.debounce_rep		= 1,
	.gpio_pendown		= OMAP3_TS_GPIO,
	.keep_vref_on		= 1,
};

static struct gpio_led gpio_leds[] = {
	{
		.name			= "touchbook::usr0",
		.default_trigger	= "heartbeat",
		.gpio			= 150,
	},
	{
		.name			= "touchbook::usr1",
		.default_trigger	= "mmc0",
		.gpio			= 149,
	},
	{
		.name			= "touchbook::pmu_stat",
		.gpio			= -EINVAL,	/* gets replaced */
		.active_low		= true,
	},
};

static struct gpio_led_platform_data gpio_led_info = {
	.leds		= gpio_leds,
	.num_leds	= ARRAY_SIZE(gpio_leds),
};

static struct platform_device leds_gpio = {
	.name	= "leds-gpio",
	.id	= -1,
	.dev	= {
		.platform_data	= &gpio_led_info,
	},
};

static struct gpio_keys_button gpio_buttons[] = {
	{
		.code			= BTN_EXTRA,
		.gpio			= 7,
		.desc			= "user",
		.wakeup			= 1,
	},
	{
		.code			= KEY_POWER,
		.gpio			= 183,
		.desc			= "power",
		.wakeup			= 1,
	},
};

static struct gpio_keys_platform_data gpio_key_info = {
	.buttons	= gpio_buttons,
	.nbuttons	= ARRAY_SIZE(gpio_buttons),
};

static struct platform_device keys_gpio = {
	.name	= "gpio-keys",
	.id	= -1,
	.dev	= {
		.platform_data	= &gpio_key_info,
	},
};

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

static struct platform_device *omap3_touchbook_devices[] __initdata = {
	&leds_gpio,
	&keys_gpio,
};

static const struct usbhs_omap_board_data usbhs_bdata __initconst = {

	.port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
	.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,

	.phy_reset  = true,
	.reset_gpio_port[0]  = -EINVAL,
	.reset_gpio_port[1]  = 147,
	.reset_gpio_port[2]  = -EINVAL
};

static void omap3_touchbook_poweroff(void)
{
	int pwr_off = TB_KILL_POWER_GPIO;

	if (gpio_request_one(pwr_off, GPIOF_OUT_INIT_LOW, "DVI reset") < 0)
		printk(KERN_ERR "Unable to get kill power GPIO\n");
}

static int __init early_touchbook_revision(char *p)
{
	if (!p)
		return 0;

	return strict_strtoul(p, 10, &touchbook_revision);
}
early_param("tbr", early_touchbook_revision);

static void __init omap3_touchbook_init(void)
{
	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);

	pm_power_off = omap3_touchbook_poweroff;

	omap3_touchbook_i2c_init();
	platform_add_devices(omap3_touchbook_devices,
			ARRAY_SIZE(omap3_touchbook_devices));
	omap_serial_init();
	omap_sdrc_init(mt46h32m32lf6_sdrc_params,
				  mt46h32m32lf6_sdrc_params);

	omap_mux_init_gpio(170, OMAP_PIN_INPUT);
	/* REVISIT leave DVI powered down until it's needed ... */
	gpio_request_one(176, GPIOF_OUT_INIT_HIGH, "DVI_nPD");

	/* Touchscreen and accelerometer */
	omap_ads7846_init(4, OMAP3_TS_GPIO, 310, &ads7846_pdata);
	usb_musb_init(NULL);
	usbhs_init(&usbhs_bdata);
	omap_nand_flash_init(NAND_BUSWIDTH_16, omap3touchbook_nand_partitions,
			     ARRAY_SIZE(omap3touchbook_nand_partitions));

	/* 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);
}

MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
	/* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
	.atag_offset	= 0x100,
	.reserve	= omap_reserve,
	.map_io		= omap3_map_io,
	.init_early	= omap3430_init_early,
	.init_irq	= omap3_init_irq,
	.handle_irq	= omap3_intc_handle_irq,
	.init_machine	= omap3_touchbook_init,
	.timer		= &omap3_secure_timer,
	.restart	= omap_prcm_restart,
MACHINE_END