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#include <linux/usb/phy.h>
 32
 33#include <linux/platform_data/spi-omap2-mcspi.h>
 34#include <linux/spi/spi.h>
 35
 36#include <linux/spi/ads7846.h>
 37
 38#include <linux/regulator/machine.h>
 39#include <linux/i2c/twl.h>
 40
 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 "common.h"
 48#include "gpmc.h"
 49#include <linux/platform_data/mtd-nand-omap2.h>
 50
 51#include "mux.h"
 52#include "hsmmc.h"
 53#include "board-flash.h"
 54#include "common-board-devices.h"
 55
 56#include <asm/setup.h>
 57
 58#define OMAP3_AC_GPIO		136
 59#define OMAP3_TS_GPIO		162
 60#define TB_BL_PWM_TIMER		9
 61#define TB_KILL_POWER_GPIO	168
 62
 63#define	NAND_CS			0
 64
 65static unsigned long touchbook_revision;
 66
 67static struct mtd_partition omap3touchbook_nand_partitions[] = {
 68	/* All the partition sizes are listed in terms of NAND block size */
 69	{
 70		.name		= "X-Loader",
 71		.offset		= 0,
 72		.size		= 4 * NAND_BLOCK_SIZE,
 73		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
 74	},
 75	{
 76		.name		= "U-Boot",
 77		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
 78		.size		= 15 * NAND_BLOCK_SIZE,
 79		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
 80	},
 81	{
 82		.name		= "U-Boot Env",
 83		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x260000 */
 84		.size		= 1 * NAND_BLOCK_SIZE,
 85	},
 86	{
 87		.name		= "Kernel",
 88		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x280000 */
 89		.size		= 32 * NAND_BLOCK_SIZE,
 90	},
 91	{
 92		.name		= "File System",
 93		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x680000 */
 94		.size		= MTDPART_SIZ_FULL,
 95	},
 96};
 97
 98#include "sdram-micron-mt46h32m32lf-6.h"
 99
100static struct omap2_hsmmc_info mmc[] = {
101	{
102		.mmc		= 1,
103		.caps		= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
104		.gpio_wp	= 29,
105		.deferred	= true,
106	},
107	{}	/* Terminator */
108};
109
110static struct regulator_consumer_supply touchbook_vmmc1_supply[] = {
111	REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
112};
113
114static struct regulator_consumer_supply touchbook_vsim_supply[] = {
115	REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
116};
117
118static struct gpio_led gpio_leds[];
119
120static int touchbook_twl_gpio_setup(struct device *dev,
121		unsigned gpio, unsigned ngpio)
122{
123	/* gpio + 0 is "mmc0_cd" (input/IRQ) */
124	mmc[0].gpio_cd = gpio + 0;
125	omap_hsmmc_late_init(mmc);
126
127	/* REVISIT: need ehci-omap hooks for external VBUS
128	 * power switch and overcurrent detect
129	 */
130	gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC");
131
132	/* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
133	gpio_request_one(gpio + TWL4030_GPIO_MAX, GPIOF_OUT_INIT_LOW,
134			 "nEN_USB_PWR");
135
136	/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
137	gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
138
139	return 0;
140}
141
142static struct twl4030_gpio_platform_data touchbook_gpio_data = {
143	.use_leds	= true,
144	.pullups	= BIT(1),
145	.pulldowns	= BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
146				| BIT(15) | BIT(16) | BIT(17),
147	.setup		= touchbook_twl_gpio_setup,
148};
149
150static struct regulator_consumer_supply touchbook_vdac_supply[] = {
151{
152	.supply		= "vdac",
153},
154};
155
156static struct regulator_consumer_supply touchbook_vdvi_supply[] = {
157{
158	.supply		= "vdvi",
159},
160};
161
162/* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
163static struct regulator_init_data touchbook_vmmc1 = {
164	.constraints = {
165		.min_uV			= 1850000,
166		.max_uV			= 3150000,
167		.valid_modes_mask	= REGULATOR_MODE_NORMAL
168					| REGULATOR_MODE_STANDBY,
169		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
170					| REGULATOR_CHANGE_MODE
171					| REGULATOR_CHANGE_STATUS,
172	},
173	.num_consumer_supplies	= ARRAY_SIZE(touchbook_vmmc1_supply),
174	.consumer_supplies	= touchbook_vmmc1_supply,
175};
176
177/* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
178static struct regulator_init_data touchbook_vsim = {
179	.constraints = {
180		.min_uV			= 1800000,
181		.max_uV			= 3000000,
182		.valid_modes_mask	= REGULATOR_MODE_NORMAL
183					| REGULATOR_MODE_STANDBY,
184		.valid_ops_mask		= REGULATOR_CHANGE_VOLTAGE
185					| REGULATOR_CHANGE_MODE
186					| REGULATOR_CHANGE_STATUS,
187	},
188	.num_consumer_supplies	= ARRAY_SIZE(touchbook_vsim_supply),
189	.consumer_supplies	= touchbook_vsim_supply,
190};
191
192static struct twl4030_platform_data touchbook_twldata = {
193	/* platform_data for children goes here */
194	.gpio		= &touchbook_gpio_data,
195	.vmmc1		= &touchbook_vmmc1,
196	.vsim		= &touchbook_vsim,
197};
198
199static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
200	{
201		I2C_BOARD_INFO("bq27200", 0x55),
202	},
203};
204
205static int __init omap3_touchbook_i2c_init(void)
206{
207	/* Standard TouchBook bus */
208	omap3_pmic_get_config(&touchbook_twldata,
209			TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
210			TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
211
212	touchbook_twldata.vdac->num_consumer_supplies =
213					ARRAY_SIZE(touchbook_vdac_supply);
214	touchbook_twldata.vdac->consumer_supplies = touchbook_vdac_supply;
215
216	touchbook_twldata.vpll2->constraints.name = "VDVI";
217	touchbook_twldata.vpll2->num_consumer_supplies =
218					ARRAY_SIZE(touchbook_vdvi_supply);
219	touchbook_twldata.vpll2->consumer_supplies = touchbook_vdvi_supply;
220
221	omap3_pmic_init("twl4030", &touchbook_twldata);
222	/* Additional TouchBook bus */
223	omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
224			ARRAY_SIZE(touchBook_i2c_boardinfo));
225
226	return 0;
227}
228
229static struct ads7846_platform_data ads7846_pdata = {
230	.x_min			= 100,
231	.y_min			= 265,
232	.x_max			= 3950,
233	.y_max			= 3750,
234	.x_plate_ohms		= 40,
235	.pressure_max		= 255,
236	.debounce_max		= 10,
237	.debounce_tol		= 5,
238	.debounce_rep		= 1,
239	.gpio_pendown		= OMAP3_TS_GPIO,
240	.keep_vref_on		= 1,
241};
242
243static struct gpio_led gpio_leds[] = {
244	{
245		.name			= "touchbook::usr0",
246		.default_trigger	= "heartbeat",
247		.gpio			= 150,
248	},
249	{
250		.name			= "touchbook::usr1",
251		.default_trigger	= "mmc0",
252		.gpio			= 149,
253	},
254	{
255		.name			= "touchbook::pmu_stat",
256		.gpio			= -EINVAL,	/* gets replaced */
257		.active_low		= true,
258	},
259};
260
261static struct gpio_led_platform_data gpio_led_info = {
262	.leds		= gpio_leds,
263	.num_leds	= ARRAY_SIZE(gpio_leds),
264};
265
266static struct platform_device leds_gpio = {
267	.name	= "leds-gpio",
268	.id	= -1,
269	.dev	= {
270		.platform_data	= &gpio_led_info,
271	},
272};
273
274static struct gpio_keys_button gpio_buttons[] = {
275	{
276		.code			= BTN_EXTRA,
277		.gpio			= 7,
278		.desc			= "user",
279		.wakeup			= 1,
280	},
281	{
282		.code			= KEY_POWER,
283		.gpio			= 183,
284		.desc			= "power",
285		.wakeup			= 1,
286	},
287};
288
289static struct gpio_keys_platform_data gpio_key_info = {
290	.buttons	= gpio_buttons,
291	.nbuttons	= ARRAY_SIZE(gpio_buttons),
292};
293
294static struct platform_device keys_gpio = {
295	.name	= "gpio-keys",
296	.id	= -1,
297	.dev	= {
298		.platform_data	= &gpio_key_info,
299	},
300};
301
302#ifdef CONFIG_OMAP_MUX
303static struct omap_board_mux board_mux[] __initdata = {
304	{ .reg_offset = OMAP_MUX_TERMINATOR },
305};
306#endif
307
308static struct usbhs_phy_data phy_data[] __initdata = {
309	{
310		.port = 2,
311		.reset_gpio = 147,
312		.vcc_gpio = -EINVAL,
313	},
314};
315
316static struct platform_device *omap3_touchbook_devices[] __initdata = {
317	&leds_gpio,
318	&keys_gpio,
319};
320
321static struct usbhs_omap_platform_data usbhs_bdata __initdata = {
322	.port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
323	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
324};
325
326static void omap3_touchbook_poweroff(void)
327{
328	int pwr_off = TB_KILL_POWER_GPIO;
329
330	if (gpio_request_one(pwr_off, GPIOF_OUT_INIT_LOW, "DVI reset") < 0)
331		printk(KERN_ERR "Unable to get kill power GPIO\n");
332}
333
334static int __init early_touchbook_revision(char *p)
335{
336	if (!p)
337		return 0;
338
339	return strict_strtoul(p, 10, &touchbook_revision);
340}
341early_param("tbr", early_touchbook_revision);
342
343static void __init omap3_touchbook_init(void)
344{
345	omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
346
347	pm_power_off = omap3_touchbook_poweroff;
348
349	if (system_rev >= 0x20 && system_rev <= 0x34301000) {
350		omap_mux_init_gpio(23, OMAP_PIN_INPUT);
351		mmc[0].gpio_wp = 23;
352	} else {
353		omap_mux_init_gpio(29, OMAP_PIN_INPUT);
354	}
355	omap_hsmmc_init(mmc);
356
357	omap3_touchbook_i2c_init();
358	platform_add_devices(omap3_touchbook_devices,
359			ARRAY_SIZE(omap3_touchbook_devices));
360	omap_serial_init();
361	omap_sdrc_init(mt46h32m32lf6_sdrc_params,
362				  mt46h32m32lf6_sdrc_params);
363
364	omap_mux_init_gpio(170, OMAP_PIN_INPUT);
365	/* REVISIT leave DVI powered down until it's needed ... */
366	gpio_request_one(176, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
367
368	/* Touchscreen and accelerometer */
369	omap_ads7846_init(4, OMAP3_TS_GPIO, 310, &ads7846_pdata);
370	usb_bind_phy("musb-hdrc.0.auto", 0, "twl4030_usb");
371	usb_musb_init(NULL);
372
373	usbhs_init_phys(phy_data, ARRAY_SIZE(phy_data));
374	usbhs_init(&usbhs_bdata);
375	board_nand_init(omap3touchbook_nand_partitions,
376			ARRAY_SIZE(omap3touchbook_nand_partitions), NAND_CS,
377			NAND_BUSWIDTH_16, NULL);
378
379	/* Ensure SDRC pins are mux'd for self-refresh */
380	omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
381	omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
382}
383
384MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
385	/* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
386	.atag_offset	= 0x100,
387	.reserve	= omap_reserve,
388	.map_io		= omap3_map_io,
389	.init_early	= omap3430_init_early,
390	.init_irq	= omap3_init_irq,
391	.handle_irq	= omap3_intc_handle_irq,
392	.init_machine	= omap3_touchbook_init,
393	.init_late	= omap3430_init_late,
394	.init_time	= omap3_secure_sync32k_timer_init,
395	.restart	= omap3xxx_restart,
396MACHINE_END