[linux-2.6-block.git] / drivers / platform / x86 / chromeos_laptop.c

/*
 *  chromeos_laptop.c - Driver to instantiate Chromebook i2c/smbus devices.
 *
 *  Author : Benson Leung <bleung@chromium.org>
 *
 *  Copyright (C) 2012 Google, Inc.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include <linux/dmi.h>
#include <linux/i2c.h>
#include <linux/i2c/atmel_mxt_ts.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/module.h>

#define ATMEL_TP_I2C_ADDR	0x4b
#define ATMEL_TP_I2C_BL_ADDR	0x25
#define ATMEL_TS_I2C_ADDR	0x4a
#define ATMEL_TS_I2C_BL_ADDR	0x26
#define CYAPA_TP_I2C_ADDR	0x67
#define ISL_ALS_I2C_ADDR	0x44
#define TAOS_ALS_I2C_ADDR	0x29

static struct i2c_client *als;
static struct i2c_client *tp;
static struct i2c_client *ts;

const char *i2c_adapter_names[] = {
	"SMBus I801 adapter",
	"i915 gmbus vga",
	"i915 gmbus panel",
};

/* Keep this enum consistent with i2c_adapter_names */
enum i2c_adapter_type {
	I2C_ADAPTER_SMBUS = 0,
	I2C_ADAPTER_VGADDC,
	I2C_ADAPTER_PANEL,
};

static struct i2c_board_info __initdata cyapa_device = {
	I2C_BOARD_INFO("cyapa", CYAPA_TP_I2C_ADDR),
	.flags		= I2C_CLIENT_WAKE,
};

static struct i2c_board_info __initdata isl_als_device = {
	I2C_BOARD_INFO("isl29018", ISL_ALS_I2C_ADDR),
};

static struct i2c_board_info __initdata tsl2583_als_device = {
	I2C_BOARD_INFO("tsl2583", TAOS_ALS_I2C_ADDR),
};

static struct i2c_board_info __initdata tsl2563_als_device = {
	I2C_BOARD_INFO("tsl2563", TAOS_ALS_I2C_ADDR),
};

static struct mxt_platform_data atmel_224s_tp_platform_data = {
	.x_line			= 18,
	.y_line			= 12,
	.x_size			= 102*20,
	.y_size			= 68*20,
	.blen			= 0x80,	/* Gain setting is in upper 4 bits */
	.threshold		= 0x32,
	.voltage		= 0,	/* 3.3V */
	.orient			= MXT_VERTICAL_FLIP,
	.irqflags		= IRQF_TRIGGER_FALLING,
	.is_tp			= true,
	.key_map		= { KEY_RESERVED,
				    KEY_RESERVED,
				    KEY_RESERVED,
				    BTN_LEFT },
	.config			= NULL,
	.config_length		= 0,
};

static struct i2c_board_info __initdata atmel_224s_tp_device = {
	I2C_BOARD_INFO("atmel_mxt_tp", ATMEL_TP_I2C_ADDR),
	.platform_data = &atmel_224s_tp_platform_data,
	.flags		= I2C_CLIENT_WAKE,
};

static struct mxt_platform_data atmel_1664s_platform_data = {
	.x_line			= 32,
	.y_line			= 50,
	.x_size			= 1700,
	.y_size			= 2560,
	.blen			= 0x89,	/* Gain setting is in upper 4 bits */
	.threshold		= 0x28,
	.voltage		= 0,	/* 3.3V */
	.orient			= MXT_ROTATED_90_COUNTER,
	.irqflags		= IRQF_TRIGGER_FALLING,
	.is_tp			= false,
	.config			= NULL,
	.config_length		= 0,
};

static struct i2c_board_info __initdata atmel_1664s_device = {
	I2C_BOARD_INFO("atmel_mxt_ts", ATMEL_TS_I2C_ADDR),
	.platform_data = &atmel_1664s_platform_data,
	.flags		= I2C_CLIENT_WAKE,
};

static struct i2c_client __init *__add_probed_i2c_device(
		const char *name,
		int bus,
		struct i2c_board_info *info,
		const unsigned short *addrs)
{
	const struct dmi_device *dmi_dev;
	const struct dmi_dev_onboard *dev_data;
	struct i2c_adapter *adapter;
	struct i2c_client *client;

	if (bus < 0)
		return NULL;
	/*
	 * If a name is specified, look for irq platform information stashed
	 * in DMI_DEV_TYPE_DEV_ONBOARD by the Chrome OS custom system firmware.
	 */
	if (name) {
		dmi_dev = dmi_find_device(DMI_DEV_TYPE_DEV_ONBOARD, name, NULL);
		if (!dmi_dev) {
			pr_err("%s failed to dmi find device %s.\n",
			       __func__,
			       name);
			return NULL;
		}
		dev_data = (struct dmi_dev_onboard *)dmi_dev->device_data;
		if (!dev_data) {
			pr_err("%s failed to get data from dmi for %s.\n",
			       __func__, name);
			return NULL;
		}
		info->irq = dev_data->instance;
	}

	adapter = i2c_get_adapter(bus);
	if (!adapter) {
		pr_err("%s failed to get i2c adapter %d.\n", __func__, bus);
		return NULL;
	}

	/* add the i2c device */
	client = i2c_new_probed_device(adapter, info, addrs, NULL);
	if (!client)
		pr_err("%s failed to register device %d-%02x\n",
		       __func__, bus, info->addr);
	else
		pr_debug("%s added i2c device %d-%02x\n",
			 __func__, bus, info->addr);

	i2c_put_adapter(adapter);
	return client;
}

static int __init __find_i2c_adap(struct device *dev, void *data)
{
	const char *name = data;
	static const char *prefix = "i2c-";
	struct i2c_adapter *adapter;
	if (strncmp(dev_name(dev), prefix, strlen(prefix)) != 0)
		return 0;
	adapter = to_i2c_adapter(dev);
	return (strncmp(adapter->name, name, strlen(name)) == 0);
}

static int __init find_i2c_adapter_num(enum i2c_adapter_type type)
{
	struct device *dev = NULL;
	struct i2c_adapter *adapter;
	const char *name = i2c_adapter_names[type];
	/* find the adapter by name */
	dev = bus_find_device(&i2c_bus_type, NULL, (void *)name,
			      __find_i2c_adap);
	if (!dev) {
		pr_err("%s: i2c adapter %s not found on system.\n", __func__,
		       name);
		return -ENODEV;
	}
	adapter = to_i2c_adapter(dev);
	return adapter->nr;
}

/*
 * Takes a list of addresses in addrs as such :
 * { addr1, ... , addrn, I2C_CLIENT_END };
 * add_probed_i2c_device will use i2c_new_probed_device
 * and probe for devices at all of the addresses listed.
 * Returns NULL if no devices found.
 * See Documentation/i2c/instantiating-devices for more information.
 */
static __init struct i2c_client *add_probed_i2c_device(
		const char *name,
		enum i2c_adapter_type type,
		struct i2c_board_info *info,
		const unsigned short *addrs)
{
	return __add_probed_i2c_device(name,
				       find_i2c_adapter_num(type),
				       info,
				       addrs);
}

/*
 * Probes for a device at a single address, the one provided by
 * info->addr.
 * Returns NULL if no device found.
 */
static __init struct i2c_client *add_i2c_device(const char *name,
						enum i2c_adapter_type type,
						struct i2c_board_info *info)
{
	const unsigned short addr_list[] = { info->addr, I2C_CLIENT_END };
	return __add_probed_i2c_device(name,
				       find_i2c_adapter_num(type),
				       info,
				       addr_list);
}


static struct i2c_client __init *add_smbus_device(const char *name,
						  struct i2c_board_info *info)
{
	return add_i2c_device(name, I2C_ADAPTER_SMBUS, info);
}

static int __init setup_cyapa_smbus_tp(const struct dmi_system_id *id)
{
	/* add cyapa touchpad on smbus */
	tp = add_smbus_device("trackpad", &cyapa_device);
	return 0;
}

static int __init setup_atmel_224s_tp(const struct dmi_system_id *id)
{
	const unsigned short addr_list[] = { ATMEL_TP_I2C_BL_ADDR,
					     ATMEL_TP_I2C_ADDR,
					     I2C_CLIENT_END };

	/* add atmel mxt touchpad on VGA DDC GMBus */
	tp = add_probed_i2c_device("trackpad", I2C_ADAPTER_VGADDC,
				   &atmel_224s_tp_device, addr_list);
	return 0;
}

static int __init setup_atmel_1664s_ts(const struct dmi_system_id *id)
{
	const unsigned short addr_list[] = { ATMEL_TS_I2C_BL_ADDR,
					     ATMEL_TS_I2C_ADDR,
					     I2C_CLIENT_END };

	/* add atmel mxt touch device on PANEL GMBus */
	ts = add_probed_i2c_device("touchscreen", I2C_ADAPTER_PANEL,
				   &atmel_1664s_device, addr_list);
	return 0;
}


static int __init setup_isl29018_als(const struct dmi_system_id *id)
{
	/* add isl29018 light sensor */
	als = add_smbus_device("lightsensor", &isl_als_device);
	return 0;
}

static int __init setup_isl29023_als(const struct dmi_system_id *id)
{
	/* add isl29023 light sensor on Panel GMBus */
	als = add_i2c_device("lightsensor", I2C_ADAPTER_PANEL,
			     &isl_als_device);
	return 0;
}

static int __init setup_tsl2583_als(const struct dmi_system_id *id)
{
	/* add tsl2583 light sensor on smbus */
	als = add_smbus_device(NULL, &tsl2583_als_device);
	return 0;
}

static int __init setup_tsl2563_als(const struct dmi_system_id *id)
{
	/* add tsl2563 light sensor on smbus */
	als = add_smbus_device(NULL, &tsl2563_als_device);
	return 0;
}

static struct dmi_system_id __initdata chromeos_laptop_dmi_table[] = {
	{
		.ident = "Samsung Series 5 550 - Touchpad",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG"),
			DMI_MATCH(DMI_PRODUCT_NAME, "Lumpy"),
		},
		.callback = setup_cyapa_smbus_tp,
	},
	{
		.ident = "Chromebook Pixel - Touchscreen",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
			DMI_MATCH(DMI_PRODUCT_NAME, "Link"),
		},
		.callback = setup_atmel_1664s_ts,
	},
	{
		.ident = "Chromebook Pixel - Touchpad",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
			DMI_MATCH(DMI_PRODUCT_NAME, "Link"),
		},
		.callback = setup_atmel_224s_tp,
	},
	{
		.ident = "Samsung Series 5 550 - Light Sensor",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG"),
			DMI_MATCH(DMI_PRODUCT_NAME, "Lumpy"),
		},
		.callback = setup_isl29018_als,
	},
	{
		.ident = "Chromebook Pixel - Light Sensor",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
			DMI_MATCH(DMI_PRODUCT_NAME, "Link"),
		},
		.callback = setup_isl29023_als,
	},
	{
		.ident = "Acer C7 Chromebook - Touchpad",
		.matches = {
			DMI_MATCH(DMI_PRODUCT_NAME, "Parrot"),
		},
		.callback = setup_cyapa_smbus_tp,
	},
	{
		.ident = "HP Pavilion 14 Chromebook - Touchpad",
		.matches = {
			DMI_MATCH(DMI_PRODUCT_NAME, "Butterfly"),
		},
		.callback = setup_cyapa_smbus_tp,
	},
	{
		.ident = "Samsung Series 5 - Light Sensor",
		.matches = {
			DMI_MATCH(DMI_PRODUCT_NAME, "Alex"),
		},
		.callback = setup_tsl2583_als,
	},
	{
		.ident = "Cr-48 - Light Sensor",
		.matches = {
			DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
		},
		.callback = setup_tsl2563_als,
	},
	{
		.ident = "Acer AC700 - Light Sensor",
		.matches = {
			DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"),
		},
		.callback = setup_tsl2563_als,
	},
	{ }
};
MODULE_DEVICE_TABLE(dmi, chromeos_laptop_dmi_table);

static int __init chromeos_laptop_init(void)
{
	if (!dmi_check_system(chromeos_laptop_dmi_table)) {
		pr_debug("%s unsupported system.\n", __func__);
		return -ENODEV;
	}
	return 0;
}

static void __exit chromeos_laptop_exit(void)
{
	if (als)
		i2c_unregister_device(als);
	if (tp)
		i2c_unregister_device(tp);
	if (ts)
		i2c_unregister_device(ts);
}

module_init(chromeos_laptop_init);
module_exit(chromeos_laptop_exit);

MODULE_DESCRIPTION("Chrome OS Laptop driver");
MODULE_AUTHOR("Benson Leung <bleung@chromium.org>");
MODULE_LICENSE("GPL");
Commit	Line	Data
d1381f45 BL	1	/*
	2	* chromeos_laptop.c - Driver to instantiate Chromebook i2c/smbus devices.
	3	*
	4	* Author : Benson Leung <bleung@chromium.org>
	5	*
	6	* Copyright (C) 2012 Google, Inc.
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*
	22	*/
	23
	24	#include <linux/dmi.h>
	25	#include <linux/i2c.h>
2ef39204 BL	26	#include <linux/i2c/atmel_mxt_ts.h>
	27	#include <linux/input.h>
	28	#include <linux/interrupt.h>
d1381f45 BL	29	#include <linux/module.h>
d1381f45 BL	30
8e1ad4c4 BL	31	#define ATMEL_TP_I2C_ADDR 0x4b
8e1ad4c4 BL	32	#define ATMEL_TP_I2C_BL_ADDR 0x25
33a84f8a YS	33	#define ATMEL_TS_I2C_ADDR 0x4a
33a84f8a YS	34	#define ATMEL_TS_I2C_BL_ADDR 0x26
d1381f45 BL	35	#define CYAPA_TP_I2C_ADDR 0x67
d1381f45 BL	36	#define ISL_ALS_I2C_ADDR 0x44
aabf3f44	37	#define TAOS_ALS_I2C_ADDR 0x29
d1381f45 BL	38
	39	static struct i2c_client *als;
	40	static struct i2c_client *tp;
33a84f8a	41	static struct i2c_client *ts;
d1381f45 BL	42
	43	const char *i2c_adapter_names[] = {
	44	"SMBus I801 adapter",
741bf0c7 BL	45	"i915 gmbus vga",
741bf0c7 BL	46	"i915 gmbus panel",
d1381f45 BL	47	};
	48
	49	/* Keep this enum consistent with i2c_adapter_names */
	50	enum i2c_adapter_type {
	51	I2C_ADAPTER_SMBUS = 0,
741bf0c7 BL	52	I2C_ADAPTER_VGADDC,
741bf0c7 BL	53	I2C_ADAPTER_PANEL,
d1381f45 BL	54	};
	55
	56	static struct i2c_board_info __initdata cyapa_device = {
	57	I2C_BOARD_INFO("cyapa", CYAPA_TP_I2C_ADDR),
	58	.flags = I2C_CLIENT_WAKE,
	59	};
	60
	61	static struct i2c_board_info __initdata isl_als_device = {
	62	I2C_BOARD_INFO("isl29018", ISL_ALS_I2C_ADDR),
	63	};
	64
8016bcbc BL	65	static struct i2c_board_info __initdata tsl2583_als_device = {
	66	I2C_BOARD_INFO("tsl2583", TAOS_ALS_I2C_ADDR),
	67	};
	68
aabf3f44 BL	69	static struct i2c_board_info __initdata tsl2563_als_device = {
	70	I2C_BOARD_INFO("tsl2563", TAOS_ALS_I2C_ADDR),
	71	};
	72
2ef39204 BL	73	static struct mxt_platform_data atmel_224s_tp_platform_data = {
	74	.x_line = 18,
	75	.y_line = 12,
	76	.x_size = 102*20,
	77	.y_size = 68*20,
	78	.blen = 0x80, /* Gain setting is in upper 4 bits */
	79	.threshold = 0x32,
	80	.voltage = 0, /* 3.3V */
	81	.orient = MXT_VERTICAL_FLIP,
	82	.irqflags = IRQF_TRIGGER_FALLING,
	83	.is_tp = true,
	84	.key_map = { KEY_RESERVED,
	85	KEY_RESERVED,
	86	KEY_RESERVED,
	87	BTN_LEFT },
	88	.config = NULL,
	89	.config_length = 0,
	90	};
	91
8e1ad4c4 BL	92	static struct i2c_board_info __initdata atmel_224s_tp_device = {
8e1ad4c4 BL	93	I2C_BOARD_INFO("atmel_mxt_tp", ATMEL_TP_I2C_ADDR),
2ef39204	94	.platform_data = &atmel_224s_tp_platform_data,
8e1ad4c4 BL	95	.flags = I2C_CLIENT_WAKE,
	96	};
	97
2ef39204 BL	98	static struct mxt_platform_data atmel_1664s_platform_data = {
	99	.x_line = 32,
	100	.y_line = 50,
	101	.x_size = 1700,
	102	.y_size = 2560,
	103	.blen = 0x89, /* Gain setting is in upper 4 bits */
	104	.threshold = 0x28,
	105	.voltage = 0, /* 3.3V */
	106	.orient = MXT_ROTATED_90_COUNTER,
	107	.irqflags = IRQF_TRIGGER_FALLING,
	108	.is_tp = false,
	109	.config = NULL,
	110	.config_length = 0,
	111	};
	112
33a84f8a YS	113	static struct i2c_board_info __initdata atmel_1664s_device = {
33a84f8a YS	114	I2C_BOARD_INFO("atmel_mxt_ts", ATMEL_TS_I2C_ADDR),
2ef39204	115	.platform_data = &atmel_1664s_platform_data,
33a84f8a YS	116	.flags = I2C_CLIENT_WAKE,
	117	};
	118
d1381f45 BL	119	static struct i2c_client __init *__add_probed_i2c_device(
	120	const char *name,
	121	int bus,
	122	struct i2c_board_info *info,
	123	const unsigned short *addrs)
	124	{
	125	const struct dmi_device *dmi_dev;
	126	const struct dmi_dev_onboard *dev_data;
	127	struct i2c_adapter *adapter;
	128	struct i2c_client *client;
	129
	130	if (bus < 0)
	131	return NULL;
	132	/*
	133	* If a name is specified, look for irq platform information stashed
	134	* in DMI_DEV_TYPE_DEV_ONBOARD by the Chrome OS custom system firmware.
	135	*/
	136	if (name) {
	137	dmi_dev = dmi_find_device(DMI_DEV_TYPE_DEV_ONBOARD, name, NULL);
	138	if (!dmi_dev) {
	139	pr_err("%s failed to dmi find device %s.\n",
	140	__func__,
	141	name);
	142	return NULL;
	143	}
	144	dev_data = (struct dmi_dev_onboard *)dmi_dev->device_data;
	145	if (!dev_data) {
	146	pr_err("%s failed to get data from dmi for %s.\n",
	147	__func__, name);
	148	return NULL;
	149	}
	150	info->irq = dev_data->instance;
	151	}
	152
	153	adapter = i2c_get_adapter(bus);
	154	if (!adapter) {
	155	pr_err("%s failed to get i2c adapter %d.\n", __func__, bus);
	156	return NULL;
	157	}
	158
	159	/* add the i2c device */
	160	client = i2c_new_probed_device(adapter, info, addrs, NULL);
	161	if (!client)
	162	pr_err("%s failed to register device %d-%02x\n",
	163	__func__, bus, info->addr);
	164	else
	165	pr_debug("%s added i2c device %d-%02x\n",
	166	__func__, bus, info->addr);
	167
	168	i2c_put_adapter(adapter);
	169	return client;
	170	}
	171
	172	static int __init __find_i2c_adap(struct device dev, void data)
	173	{
	174	const char *name = data;
	175	static const char *prefix = "i2c-";
	176	struct i2c_adapter *adapter;
	177	if (strncmp(dev_name(dev), prefix, strlen(prefix)) != 0)
	178	return 0;
	179	adapter = to_i2c_adapter(dev);
	180	return (strncmp(adapter->name, name, strlen(name)) == 0);
	181	}
	182
183	static int __init find_i2c_adapter_num(enum i2c_adapter_type type)
184	{
185	struct device *dev = NULL;
186	struct i2c_adapter *adapter;
187	const char *name = i2c_adapter_names[type];
188	/* find the adapter by name */
189	dev = bus_find_device(&i2c_bus_type, NULL, (void *)name,
190	__find_i2c_adap);
191	if (!dev) {
192	pr_err("%s: i2c adapter %s not found on system.\n", __func__,
193	name);
194	return -ENODEV;
195	}
196	adapter = to_i2c_adapter(dev);
197	return adapter->nr;
198	}
199
bcaf089c BL	200	/*
	201	* Takes a list of addresses in addrs as such :
	202	* { addr1, ... , addrn, I2C_CLIENT_END };
	203	* add_probed_i2c_device will use i2c_new_probed_device
	204	* and probe for devices at all of the addresses listed.
	205	* Returns NULL if no devices found.
	206	* See Documentation/i2c/instantiating-devices for more information.
	207	*/
	208	static __init struct i2c_client *add_probed_i2c_device(
	209	const char *name,
	210	enum i2c_adapter_type type,
	211	struct i2c_board_info *info,
	212	const unsigned short *addrs)
	213	{
	214	return __add_probed_i2c_device(name,
	215	find_i2c_adapter_num(type),
	216	info,
	217	addrs);
	218	}
	219
d1381f45 BL	220	/*
	221	* Probes for a device at a single address, the one provided by
	222	* info->addr.
	223	* Returns NULL if no device found.
	224	*/
e7b28845 BL	225	static __init struct i2c_client add_i2c_device(const char name,
	226	enum i2c_adapter_type type,
	227	struct i2c_board_info *info)
d1381f45 BL	228	{
	229	const unsigned short addr_list[] = { info->addr, I2C_CLIENT_END };
	230	return __add_probed_i2c_device(name,
e7b28845	231	find_i2c_adapter_num(type),
d1381f45 BL	232	info,
	233	addr_list);
	234	}
	235
e7b28845 BL	236
	237	static struct i2c_client __init add_smbus_device(const char name,
	238	struct i2c_board_info *info)
	239	{
	240	return add_i2c_device(name, I2C_ADAPTER_SMBUS, info);
	241	}
	242
6e71094d	243	static int __init setup_cyapa_smbus_tp(const struct dmi_system_id *id)
d1381f45 BL	244	{
	245	/* add cyapa touchpad on smbus */
	246	tp = add_smbus_device("trackpad", &cyapa_device);
	247	return 0;
	248	}
	249
8e1ad4c4 BL	250	static int __init setup_atmel_224s_tp(const struct dmi_system_id *id)
	251	{
	252	const unsigned short addr_list[] = { ATMEL_TP_I2C_BL_ADDR,
	253	ATMEL_TP_I2C_ADDR,
	254	I2C_CLIENT_END };
	255
	256	/* add atmel mxt touchpad on VGA DDC GMBus */
	257	tp = add_probed_i2c_device("trackpad", I2C_ADAPTER_VGADDC,
	258	&atmel_224s_tp_device, addr_list);
	259	return 0;
	260	}
	261
33a84f8a YS	262	static int __init setup_atmel_1664s_ts(const struct dmi_system_id *id)
	263	{
	264	const unsigned short addr_list[] = { ATMEL_TS_I2C_BL_ADDR,
	265	ATMEL_TS_I2C_ADDR,
	266	I2C_CLIENT_END };
	267
	268	/* add atmel mxt touch device on PANEL GMBus */
	269	ts = add_probed_i2c_device("touchscreen", I2C_ADAPTER_PANEL,
	270	&atmel_1664s_device, addr_list);
	271	return 0;
	272	}
	273
8e1ad4c4	274
d1381f45 BL	275	static int __init setup_isl29018_als(const struct dmi_system_id *id)
	276	{
	277	/* add isl29018 light sensor */
	278	als = add_smbus_device("lightsensor", &isl_als_device);
	279	return 0;
	280	}
	281
cc5c3985 BL	282	static int __init setup_isl29023_als(const struct dmi_system_id *id)
	283	{
	284	/* add isl29023 light sensor on Panel GMBus */
	285	als = add_i2c_device("lightsensor", I2C_ADAPTER_PANEL,
	286	&isl_als_device);
	287	return 0;
	288	}
	289
8016bcbc BL	290	static int __init setup_tsl2583_als(const struct dmi_system_id *id)
	291	{
	292	/* add tsl2583 light sensor on smbus */
	293	als = add_smbus_device(NULL, &tsl2583_als_device);
	294	return 0;
	295	}
	296
aabf3f44 BL	297	static int __init setup_tsl2563_als(const struct dmi_system_id *id)
	298	{
	299	/* add tsl2563 light sensor on smbus */
	300	als = add_smbus_device(NULL, &tsl2563_als_device);
	301	return 0;
	302	}
	303
d1381f45 BL	304	static struct dmi_system_id __initdata chromeos_laptop_dmi_table[] = {
	305	{
	306	.ident = "Samsung Series 5 550 - Touchpad",
	307	.matches = {
	308	DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG"),
	309	DMI_MATCH(DMI_PRODUCT_NAME, "Lumpy"),
	310	},
6e71094d	311	.callback = setup_cyapa_smbus_tp,
d1381f45	312	},
33a84f8a YS	313	{
	314	.ident = "Chromebook Pixel - Touchscreen",
	315	.matches = {
	316	DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
	317	DMI_MATCH(DMI_PRODUCT_NAME, "Link"),
	318	},
	319	.callback = setup_atmel_1664s_ts,
	320	},
8e1ad4c4 BL	321	{
	322	.ident = "Chromebook Pixel - Touchpad",
	323	.matches = {
	324	DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
	325	DMI_MATCH(DMI_PRODUCT_NAME, "Link"),
	326	},
	327	.callback = setup_atmel_224s_tp,
	328	},
d1381f45 BL	329	{
	330	.ident = "Samsung Series 5 550 - Light Sensor",
	331	.matches = {
	332	DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG"),
	333	DMI_MATCH(DMI_PRODUCT_NAME, "Lumpy"),
	334	},
	335	.callback = setup_isl29018_als,
	336	},
cc5c3985 BL	337	{
	338	.ident = "Chromebook Pixel - Light Sensor",
	339	.matches = {
	340	DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
	341	DMI_MATCH(DMI_PRODUCT_NAME, "Link"),
	342	},
	343	.callback = setup_isl29023_als,
	344	},
261f171f BL	345	{
	346	.ident = "Acer C7 Chromebook - Touchpad",
	347	.matches = {
	348	DMI_MATCH(DMI_PRODUCT_NAME, "Parrot"),
	349	},
	350	.callback = setup_cyapa_smbus_tp,
e65a624b BL	351	},
	352	{
	353	.ident = "HP Pavilion 14 Chromebook - Touchpad",
	354	.matches = {
	355	DMI_MATCH(DMI_PRODUCT_NAME, "Butterfly"),
	356	},
	357	.callback = setup_cyapa_smbus_tp,
261f171f	358	},
8016bcbc BL	359	{
	360	.ident = "Samsung Series 5 - Light Sensor",
	361	.matches = {
	362	DMI_MATCH(DMI_PRODUCT_NAME, "Alex"),
	363	},
	364	.callback = setup_tsl2583_als,
	365	},
aabf3f44 BL	366	{
	367	.ident = "Cr-48 - Light Sensor",
	368	.matches = {
	369	DMI_MATCH(DMI_PRODUCT_NAME, "Mario"),
	370	},
	371	.callback = setup_tsl2563_als,
	372	},
	373	{
	374	.ident = "Acer AC700 - Light Sensor",
	375	.matches = {
	376	DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"),
	377	},
	378	.callback = setup_tsl2563_als,
	379	},
d1381f45 BL	380	{ }
	381	};
	382	MODULE_DEVICE_TABLE(dmi, chromeos_laptop_dmi_table);
	383
	384	static int __init chromeos_laptop_init(void)
	385	{
	386	if (!dmi_check_system(chromeos_laptop_dmi_table)) {
	387	pr_debug("%s unsupported system.\n", __func__);
	388	return -ENODEV;
	389	}
	390	return 0;
	391	}
	392
	393	static void __exit chromeos_laptop_exit(void)
	394	{
	395	if (als)
	396	i2c_unregister_device(als);
	397	if (tp)
	398	i2c_unregister_device(tp);
33a84f8a YS	399	if (ts)
33a84f8a YS	400	i2c_unregister_device(ts);
d1381f45 BL	401	}
	402
	403	module_init(chromeos_laptop_init);
	404	module_exit(chromeos_laptop_exit);
	405
	406	MODULE_DESCRIPTION("Chrome OS Laptop driver");
	407	MODULE_AUTHOR("Benson Leung <bleung@chromium.org>");
	408	MODULE_LICENSE("GPL");