1/*
2 * linux/arch/arm/mach-omap2/board-omap3touchbook.c
3 *
4 * Copyright (C) 2009 Always Innovating
5 *
6 * Modified from mach-omap2/board-omap3beagleboard.c
7 *
8 * Initial code: Grégoire Gentil, Tim Yamin
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15#include <linux/kernel.h>
16#include <linux/init.h>
17#include <linux/platform_device.h>
18#include <linux/delay.h>
19#include <linux/err.h>
20#include <linux/clk.h>
21#include <linux/io.h>
22#include <linux/leds.h>
23#include <linux/gpio.h>
24#include <linux/input.h>
25#include <linux/gpio_keys.h>
26
27#include <linux/mtd/mtd.h>
28#include <linux/mtd/partitions.h>
29#include <linux/mtd/nand.h>
30#include <linux/mmc/host.h>
31
32#include <plat/mcspi.h>
33#include <linux/spi/spi.h>
34
35#include <linux/spi/ads7846.h>
36
37#include <linux/regulator/machine.h>
38#include <linux/i2c/twl.h>
39
40#include <mach/hardware.h>
41#include <asm/mach-types.h>
42#include <asm/mach/arch.h>
43#include <asm/mach/map.h>
44#include <asm/mach/flash.h>
45#include <asm/system_info.h>
46
47#include <plat/board.h>
48#include "common.h"
49#include <plat/gpmc.h>
50#include <plat/nand.h>
51#include <plat/usb.h>
52
53#include "mux.h"
54#include "hsmmc.h"
55#include "common-board-devices.h"
56
57#include <asm/setup.h>
58
59#define OMAP3_AC_GPIO		136
60#define OMAP3_TS_GPIO		162
61#define TB_BL_PWM_TIMER		9
62#define TB_KILL_POWER_GPIO	168
63
64static unsigned long touchbook_revision;
65
66static struct mtd_partition omap3touchbook_nand_partitions[] = {
67	/* All the partition sizes are listed in terms of NAND block size */
68	{
69		.name		= "X-Loader",
70		.offset		= 0,
71		.size		= 4 * NAND_BLOCK_SIZE,
72		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
73	},
74	{
75		.name		= "U-Boot",
76		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
77		.size		= 15 * NAND_BLOCK_SIZE,
78		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
79	},
80	{
81		.name		= "U-Boot Env",
82		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x260000 */
83		.size		= 1 * NAND_BLOCK_SIZE,
84	},
85	{
86		.name		= "Kernel",
87		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x280000 */
88		.size		= 32 * NAND_BLOCK_SIZE,
89	},
90	{
91		.name		= "File System",
92		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x680000 */
93		.size		= MTDPART_SIZ_FULL,
94	},
95};
96
97#include "sdram-micron-mt46h32m32lf-6.h"
98
99static struct omap2_hsmmc_info mmc[] = {
100	{
101		.mmc		= 1,
102		.caps		= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
103		.gpio_wp	= 29,
104		.deferred	= true,
105	},
106	{}	/* Terminator */
107};
108
109static struct regulator_consumer_supply touchbook_vmmc1_supply[] = {
110	REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
111};
112
113static struct regulator_consumer_supply touchbook_vsim_supply[] = {
114	REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
115};
116
117static struct gpio_led gpio_leds[];
118
119static int touchbook_twl_gpio_setup(struct device *dev,
120		unsigned gpio, unsigned ngpio)
121{
122	/* gpio + 0 is "mmc0_cd" (input/IRQ) */
123	mmc[0].gpio_cd = gpio + 0;
124	omap_hsmmc_late_init(mmc);
125
126	/* REVISIT: need ehci-omap hooks for external VBUS
127	 * power switch and overcurrent detect
128	 */
129	gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC");
130
131	/* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
132	gpio_request_one(gpio + TWL4030_GPIO_MAX, GPIOF_OUT_INIT_LOW,
133			 "nEN_USB_PWR");
134
135	/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
136	gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
137
138	return 0;
139}
140
141static struct twl4030_gpio_platform_data touchbook_gpio_data = {
142	.gpio_base	= OMAP_MAX_GPIO_LINES,
143	.irq_base	= TWL4030_GPIO_IRQ_BASE,
144	.irq_end	= TWL4030_GPIO_IRQ_END,
145	.use_leds	= true,
146	.pullups	= BIT(1),
147	.pulldowns	= BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
148				| BIT(15) | BIT(16) | BIT(17),
149	.setup		= touchbook_twl_gpio_setup,
150};
151
152static struct regulator_consumer_supply touchbook_vdac_supply[] = {
153{
154	.supply		= "vdac",
155},
156};
157
158static struct regulator_consumer_supply touchbook_vdvi_supply[] = {
159{
160	.supply		= "vdvi",
161},
162};
163
164/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
165static struct regulator_init_data touchbook_vmmc1 = {
166	.constraints = {
167		.min_uV			= 1850000,
168		.max_uV			= 3150000,
169		.valid_modes_mask	= REGULATOR_MODE_NORMAL
170					| REGULATOR_MODE_STANDBY,
171		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
172					| REGULATOR_CHANGE_MODE
173					| REGULATOR_CHANGE_STATUS,
174	},
175	.num_consumer_supplies	= ARRAY_SIZE(touchbook_vmmc1_supply),
176	.consumer_supplies	= touchbook_vmmc1_supply,
177};
178
179/* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
180static struct regulator_init_data touchbook_vsim = {
181	.constraints = {
182		.min_uV			= 1800000,
183		.max_uV			= 3000000,
184		.valid_modes_mask	= REGULATOR_MODE_NORMAL
185					| REGULATOR_MODE_STANDBY,
186		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
187					| REGULATOR_CHANGE_MODE
188					| REGULATOR_CHANGE_STATUS,
189	},
190	.num_consumer_supplies	= ARRAY_SIZE(touchbook_vsim_supply),
191	.consumer_supplies	= touchbook_vsim_supply,
192};
193
194static struct twl4030_platform_data touchbook_twldata = {
195	/* platform_data for children goes here */
196	.gpio		= &touchbook_gpio_data,
197	.vmmc1		= &touchbook_vmmc1,
198	.vsim		= &touchbook_vsim,
199};
200
201static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
202	{
203		I2C_BOARD_INFO("bq27200", 0x55),
204	},
205};
206
207static int __init omap3_touchbook_i2c_init(void)
208{
209	/* Standard TouchBook bus */
210	omap3_pmic_get_config(&touchbook_twldata,
211			TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
212			TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
213
214	touchbook_twldata.vdac->num_consumer_supplies =
215					ARRAY_SIZE(touchbook_vdac_supply);
216	touchbook_twldata.vdac->consumer_supplies = touchbook_vdac_supply;
217
218	touchbook_twldata.vpll2->constraints.name = "VDVI";
219	touchbook_twldata.vpll2->num_consumer_supplies =
220					ARRAY_SIZE(touchbook_vdvi_supply);
221	touchbook_twldata.vpll2->consumer_supplies = touchbook_vdvi_supply;
222
223	omap3_pmic_init("twl4030", &touchbook_twldata);
224	/* Additional TouchBook bus */
225	omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
226			ARRAY_SIZE(touchBook_i2c_boardinfo));
227
228	return 0;
229}
230
231static struct ads7846_platform_data ads7846_pdata = {
232	.x_min			= 100,
233	.y_min			= 265,
234	.x_max			= 3950,
235	.y_max			= 3750,
236	.x_plate_ohms		= 40,
237	.pressure_max		= 255,
238	.debounce_max		= 10,
239	.debounce_tol		= 5,
240	.debounce_rep		= 1,
241	.gpio_pendown		= OMAP3_TS_GPIO,
242	.keep_vref_on		= 1,
243};
244
245static struct gpio_led gpio_leds[] = {
246	{
247		.name			= "touchbook::usr0",
248		.default_trigger	= "heartbeat",
249		.gpio			= 150,
250	},
251	{
252		.name			= "touchbook::usr1",
253		.default_trigger	= "mmc0",
254		.gpio			= 149,
255	},
256	{
257		.name			= "touchbook::pmu_stat",
258		.gpio			= -EINVAL,	/* gets replaced */
259		.active_low		= true,
260	},
261};
262
263static struct gpio_led_platform_data gpio_led_info = {
264	.leds		= gpio_leds,
265	.num_leds	= ARRAY_SIZE(gpio_leds),
266};
267
268static struct platform_device leds_gpio = {
269	.name	= "leds-gpio",
270	.id	= -1,
271	.dev	= {
272		.platform_data	= &gpio_led_info,
273	},
274};
275
276static struct gpio_keys_button gpio_buttons[] = {
277	{
278		.code			= BTN_EXTRA,
279		.gpio			= 7,
280		.desc			= "user",
281		.wakeup			= 1,
282	},
283	{
284		.code			= KEY_POWER,
285		.gpio			= 183,
286		.desc			= "power",
287		.wakeup			= 1,
288	},
289};
290
291static struct gpio_keys_platform_data gpio_key_info = {
292	.buttons	= gpio_buttons,
293	.nbuttons	= ARRAY_SIZE(gpio_buttons),
294};
295
296static struct platform_device keys_gpio = {
297	.name	= "gpio-keys",
298	.id	= -1,
299	.dev	= {
300		.platform_data	= &gpio_key_info,
301	},
302};
303
304#ifdef CONFIG_OMAP_MUX
305static struct omap_board_mux board_mux[] __initdata = {
306	{ .reg_offset = OMAP_MUX_TERMINATOR },
307};
308#endif
309
310static struct platform_device *omap3_touchbook_devices[] __initdata = {
311	&leds_gpio,
312	&keys_gpio,
313};
314
315static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
316
317	.port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
318	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
319	.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
320
321	.phy_reset  = true,
322	.reset_gpio_port[0]  = -EINVAL,
323	.reset_gpio_port[1]  = 147,
324	.reset_gpio_port[2]  = -EINVAL
325};
326
327static void omap3_touchbook_poweroff(void)
328{
329	int pwr_off = TB_KILL_POWER_GPIO;
330
331	if (gpio_request_one(pwr_off, GPIOF_OUT_INIT_LOW, "DVI reset") < 0)
332		printk(KERN_ERR "Unable to get kill power GPIO\n");
333}
334
335static int __init early_touchbook_revision(char *p)
336{
337	if (!p)
338		return 0;
339
340	return strict_strtoul(p, 10, &touchbook_revision);
341}
342early_param("tbr", early_touchbook_revision);
343
344static void __init omap3_touchbook_init(void)
345{
346	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
347
348	pm_power_off = omap3_touchbook_poweroff;
349
350	if (system_rev >= 0x20 && system_rev <= 0x34301000) {
351		omap_mux_init_gpio(23, OMAP_PIN_INPUT);
352		mmc[0].gpio_wp = 23;
353	} else {
354		omap_mux_init_gpio(29, OMAP_PIN_INPUT);
355	}
356	omap_hsmmc_init(mmc);
357
358	omap3_touchbook_i2c_init();
359	platform_add_devices(omap3_touchbook_devices,
360			ARRAY_SIZE(omap3_touchbook_devices));
361	omap_serial_init();
362	omap_sdrc_init(mt46h32m32lf6_sdrc_params,
363				  mt46h32m32lf6_sdrc_params);
364
365	omap_mux_init_gpio(170, OMAP_PIN_INPUT);
366	/* REVISIT leave DVI powered down until it's needed ... */
367	gpio_request_one(176, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
368
369	/* Touchscreen and accelerometer */
370	omap_ads7846_init(4, OMAP3_TS_GPIO, 310, &ads7846_pdata);
371	usb_musb_init(NULL);
372	usbhs_init(&usbhs_bdata);
373	omap_nand_flash_init(NAND_BUSWIDTH_16, omap3touchbook_nand_partitions,
374			     ARRAY_SIZE(omap3touchbook_nand_partitions));
375
376	/* Ensure SDRC pins are mux'd for self-refresh */
377	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
378	omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
379}
380
381MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
382	/* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
383	.atag_offset	= 0x100,
384	.reserve	= omap_reserve,
385	.map_io		= omap3_map_io,
386	.init_early	= omap3430_init_early,
387	.init_irq	= omap3_init_irq,
388	.handle_irq	= omap3_intc_handle_irq,
389	.init_machine	= omap3_touchbook_init,
390	.timer		= &omap3_secure_timer,
391	.restart	= omap_prcm_restart,
392MACHINE_END
393