[deliverable/linux.git] / drivers / platform / x86 / ideapad-laptop.c

/*
 *  ideapad_acpi.c - Lenovo IdeaPad ACPI Extras
 *
 *  Copyright © 2010 Intel Corporation
 *  Copyright © 2010 David Woodhouse <dwmw2@infradead.org>
 *
 *  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., 51 Franklin Street, Fifth Floor, Boston, MA
 *  02110-1301, USA.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
#include <linux/rfkill.h>
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>

#define IDEAPAD_DEV_CAMERA	0
#define IDEAPAD_DEV_WLAN	1
#define IDEAPAD_DEV_BLUETOOTH	2
#define IDEAPAD_DEV_3G		3
#define IDEAPAD_DEV_KILLSW	4

struct ideapad_private {
	acpi_handle handle;
	struct rfkill *rfk[5];
	struct platform_device *platform_device;
	struct input_dev *inputdev;
} *ideapad_priv;

static struct {
	char *name;
	int cfgbit;
	int opcode;
	int type;
} ideapad_rfk_data[] = {
	{ "ideapad_camera",	19, 0x1E, NUM_RFKILL_TYPES },
	{ "ideapad_wlan",	18, 0x15, RFKILL_TYPE_WLAN },
	{ "ideapad_bluetooth",	16, 0x17, RFKILL_TYPE_BLUETOOTH },
	{ "ideapad_3g",		17, 0x20, RFKILL_TYPE_WWAN },
	{ "ideapad_killsw",	0,  0,    RFKILL_TYPE_WLAN }
};

static bool no_bt_rfkill;
module_param(no_bt_rfkill, bool, 0444);
MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");

/*
 * ACPI Helpers
 */
#define IDEAPAD_EC_TIMEOUT (100) /* in ms */

static int read_method_int(acpi_handle handle, const char *method, int *val)
{
	acpi_status status;
	unsigned long long result;

	status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
	if (ACPI_FAILURE(status)) {
		*val = -1;
		return -1;
	} else {
		*val = result;
		return 0;
	}
}

static int method_vpcr(acpi_handle handle, int cmd, int *ret)
{
	acpi_status status;
	unsigned long long result;
	struct acpi_object_list params;
	union acpi_object in_obj;

	params.count = 1;
	params.pointer = &in_obj;
	in_obj.type = ACPI_TYPE_INTEGER;
	in_obj.integer.value = cmd;

	status = acpi_evaluate_integer(handle, "VPCR", &params, &result);

	if (ACPI_FAILURE(status)) {
		*ret = -1;
		return -1;
	} else {
		*ret = result;
		return 0;
	}
}

static int method_vpcw(acpi_handle handle, int cmd, int data)
{
	struct acpi_object_list params;
	union acpi_object in_obj[2];
	acpi_status status;

	params.count = 2;
	params.pointer = in_obj;
	in_obj[0].type = ACPI_TYPE_INTEGER;
	in_obj[0].integer.value = cmd;
	in_obj[1].type = ACPI_TYPE_INTEGER;
	in_obj[1].integer.value = data;

	status = acpi_evaluate_object(handle, "VPCW", &params, NULL);
	if (status != AE_OK)
		return -1;
	return 0;
}

static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data)
{
	int val;
	unsigned long int end_jiffies;

	if (method_vpcw(handle, 1, cmd))
		return -1;

	for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
	     time_before(jiffies, end_jiffies);) {
		schedule();
		if (method_vpcr(handle, 1, &val))
			return -1;
		if (val == 0) {
			if (method_vpcr(handle, 0, &val))
				return -1;
			*data = val;
			return 0;
		}
	}
	pr_err("timeout in read_ec_cmd\n");
	return -1;
}

static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
{
	int val;
	unsigned long int end_jiffies;

	if (method_vpcw(handle, 0, data))
		return -1;
	if (method_vpcw(handle, 1, cmd))
		return -1;

	for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
	     time_before(jiffies, end_jiffies);) {
		schedule();
		if (method_vpcr(handle, 1, &val))
			return -1;
		if (val == 0)
			return 0;
	}
	pr_err("timeout in write_ec_cmd\n");
	return -1;
}
/* the above is ACPI helpers */

static ssize_t show_ideapad_cam(struct device *dev,
				struct device_attribute *attr,
				char *buf)
{
	struct ideapad_private *priv = dev_get_drvdata(dev);
	acpi_handle handle = priv->handle;
	unsigned long result;

	if (read_ec_data(handle, 0x1D, &result))
		return sprintf(buf, "-1\n");
	return sprintf(buf, "%lu\n", result);
}

static ssize_t store_ideapad_cam(struct device *dev,
				 struct device_attribute *attr,
				 const char *buf, size_t count)
{
	struct ideapad_private *priv = dev_get_drvdata(dev);
	acpi_handle handle = priv->handle;
	int ret, state;

	if (!count)
		return 0;
	if (sscanf(buf, "%i", &state) != 1)
		return -EINVAL;
	ret = write_ec_cmd(handle, 0x1E, state);
	if (ret < 0)
		return ret;
	return count;
}

static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);

static int ideapad_rfk_set(void *data, bool blocked)
{
	int device = (unsigned long)data;

	if (device == IDEAPAD_DEV_KILLSW)
		return -EINVAL;

	return write_ec_cmd(ideapad_priv->handle,
			    ideapad_rfk_data[device].opcode,
			    !blocked);
}

static struct rfkill_ops ideapad_rfk_ops = {
	.set_block = ideapad_rfk_set,
};

static void ideapad_sync_rfk_state(struct acpi_device *adevice)
{
	struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
	acpi_handle handle = priv->handle;
	unsigned long hw_blocked;
	int i;

	if (read_ec_data(handle, 0x23, &hw_blocked))
		return;
	hw_blocked = !hw_blocked;

	for (i = IDEAPAD_DEV_WLAN; i <= IDEAPAD_DEV_KILLSW; i++)
		if (priv->rfk[i])
			rfkill_set_hw_state(priv->rfk[i], hw_blocked);
}

static int ideapad_register_rfkill(struct acpi_device *adevice, int dev)
{
	struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
	int ret;
	unsigned long sw_blocked;

	if (no_bt_rfkill &&
	    (ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) {
		/* Force to enable bluetooth when no_bt_rfkill=1 */
		write_ec_cmd(ideapad_priv->handle,
			     ideapad_rfk_data[dev].opcode, 1);
		return 0;
	}

	priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name, &adevice->dev,
				      ideapad_rfk_data[dev].type, &ideapad_rfk_ops,
				      (void *)(long)dev);
	if (!priv->rfk[dev])
		return -ENOMEM;

	if (read_ec_data(ideapad_priv->handle, ideapad_rfk_data[dev].opcode-1,
			 &sw_blocked)) {
		rfkill_init_sw_state(priv->rfk[dev], 0);
	} else {
		sw_blocked = !sw_blocked;
		rfkill_init_sw_state(priv->rfk[dev], sw_blocked);
	}

	ret = rfkill_register(priv->rfk[dev]);
	if (ret) {
		rfkill_destroy(priv->rfk[dev]);
		return ret;
	}
	return 0;
}

static void ideapad_unregister_rfkill(struct acpi_device *adevice, int dev)
{
	struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);

	if (!priv->rfk[dev])
		return;

	rfkill_unregister(priv->rfk[dev]);
	rfkill_destroy(priv->rfk[dev]);
}

/*
 * Platform device
 */
static struct attribute *ideapad_attributes[] = {
	&dev_attr_camera_power.attr,
	NULL
};

static struct attribute_group ideapad_attribute_group = {
	.attrs = ideapad_attributes
};

static int __devinit ideapad_platform_init(void)
{
	int result;

	ideapad_priv->platform_device = platform_device_alloc("ideapad", -1);
	if (!ideapad_priv->platform_device)
		return -ENOMEM;
	platform_set_drvdata(ideapad_priv->platform_device, ideapad_priv);

	result = platform_device_add(ideapad_priv->platform_device);
	if (result)
		goto fail_platform_device;

	result = sysfs_create_group(&ideapad_priv->platform_device->dev.kobj,
				    &ideapad_attribute_group);
	if (result)
		goto fail_sysfs;
	return 0;

fail_sysfs:
	platform_device_del(ideapad_priv->platform_device);
fail_platform_device:
	platform_device_put(ideapad_priv->platform_device);
	return result;
}

static void ideapad_platform_exit(void)
{
	sysfs_remove_group(&ideapad_priv->platform_device->dev.kobj,
			   &ideapad_attribute_group);
	platform_device_unregister(ideapad_priv->platform_device);
}
/* the above is platform device */

/*
 * input device
 */
static const struct key_entry ideapad_keymap[] = {
	{ KE_KEY, 0x06, { KEY_SWITCHVIDEOMODE } },
	{ KE_KEY, 0x0D, { KEY_WLAN } },
	{ KE_END, 0 },
};

static int __devinit ideapad_input_init(void)
{
	struct input_dev *inputdev;
	int error;

	inputdev = input_allocate_device();
	if (!inputdev) {
		pr_info("Unable to allocate input device\n");
		return -ENOMEM;
	}

	inputdev->name = "Ideapad extra buttons";
	inputdev->phys = "ideapad/input0";
	inputdev->id.bustype = BUS_HOST;
	inputdev->dev.parent = &ideapad_priv->platform_device->dev;

	error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
	if (error) {
		pr_err("Unable to setup input device keymap\n");
		goto err_free_dev;
	}

	error = input_register_device(inputdev);
	if (error) {
		pr_err("Unable to register input device\n");
		goto err_free_keymap;
	}

	ideapad_priv->inputdev = inputdev;
	return 0;

err_free_keymap:
	sparse_keymap_free(inputdev);
err_free_dev:
	input_free_device(inputdev);
	return error;
}

static void __devexit ideapad_input_exit(void)
{
	sparse_keymap_free(ideapad_priv->inputdev);
	input_unregister_device(ideapad_priv->inputdev);
	ideapad_priv->inputdev = NULL;
}

static void ideapad_input_report(unsigned long scancode)
{
	sparse_keymap_report_event(ideapad_priv->inputdev, scancode, 1, true);
}
/* the above is input device */

static const struct acpi_device_id ideapad_device_ids[] = {
	{ "VPC2004", 0},
	{ "", 0},
};
MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);

static int ideapad_acpi_add(struct acpi_device *adevice)
{
	int ret, i, cfg;
	struct ideapad_private *priv;

	if (read_method_int(adevice->handle, "_CFG", &cfg))
		return -ENODEV;

	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;
	ideapad_priv = priv;
	priv->handle = adevice->handle;
	dev_set_drvdata(&adevice->dev, priv);

	ret = ideapad_platform_init();
	if (ret)
		goto platform_failed;

	ret = ideapad_input_init();
	if (ret)
		goto input_failed;

	for (i = IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++) {
		if (test_bit(ideapad_rfk_data[i].cfgbit, (unsigned long *)&cfg))
			ideapad_register_rfkill(adevice, i);
	}
	ideapad_sync_rfk_state(adevice);

	return 0;

input_failed:
	ideapad_platform_exit();
platform_failed:
	kfree(priv);
	return ret;
}

static int ideapad_acpi_remove(struct acpi_device *adevice, int type)
{
	struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
	int i;

	for (i = IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++)
		ideapad_unregister_rfkill(adevice, i);
	ideapad_input_exit();
	ideapad_platform_exit();
	dev_set_drvdata(&adevice->dev, NULL);
	kfree(priv);

	return 0;
}

static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
{
	acpi_handle handle = adevice->handle;
	unsigned long vpc1, vpc2, vpc_bit;

	if (read_ec_data(handle, 0x10, &vpc1))
		return;
	if (read_ec_data(handle, 0x1A, &vpc2))
		return;

	vpc1 = (vpc2 << 8) | vpc1;
	for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) {
		if (test_bit(vpc_bit, &vpc1)) {
			if (vpc_bit == 9)
				ideapad_sync_rfk_state(adevice);
			else
				ideapad_input_report(vpc_bit);
		}
	}
}

static struct acpi_driver ideapad_acpi_driver = {
	.name = "ideapad_acpi",
	.class = "IdeaPad",
	.ids = ideapad_device_ids,
	.ops.add = ideapad_acpi_add,
	.ops.remove = ideapad_acpi_remove,
	.ops.notify = ideapad_acpi_notify,
	.owner = THIS_MODULE,
};


static int __init ideapad_acpi_module_init(void)
{
	acpi_bus_register_driver(&ideapad_acpi_driver);

	return 0;
}


static void __exit ideapad_acpi_module_exit(void)
{
	acpi_bus_unregister_driver(&ideapad_acpi_driver);

}

MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
MODULE_DESCRIPTION("IdeaPad ACPI Extras");
MODULE_LICENSE("GPL");

module_init(ideapad_acpi_module_init);
module_exit(ideapad_acpi_module_exit);
Commit	Line	Data
58ac7aa0 DW	1	/*
	2	* ideapad_acpi.c - Lenovo IdeaPad ACPI Extras
	3	*
	4	* Copyright © 2010 Intel Corporation
	5	* Copyright © 2010 David Woodhouse <dwmw2@infradead.org>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
	20	* 02110-1301, USA.
	21	*/
	22
	23	#include <linux/kernel.h>
	24	#include <linux/module.h>
	25	#include <linux/init.h>
	26	#include <linux/types.h>
	27	#include <acpi/acpi_bus.h>
	28	#include <acpi/acpi_drivers.h>
	29	#include <linux/rfkill.h>
98ee6919	30	#include <linux/platform_device.h>
f63409ae IP	31	#include <linux/input.h>
f63409ae IP	32	#include <linux/input/sparse-keymap.h>
58ac7aa0 DW	33
	34	#define IDEAPAD_DEV_CAMERA 0
	35	#define IDEAPAD_DEV_WLAN 1
	36	#define IDEAPAD_DEV_BLUETOOTH 2
	37	#define IDEAPAD_DEV_3G 3
	38	#define IDEAPAD_DEV_KILLSW 4
	39
ce326329	40	struct ideapad_private {
26c81d5c	41	acpi_handle handle;
ce326329	42	struct rfkill *rfk[5];
98ee6919	43	struct platform_device *platform_device;
f63409ae	44	struct input_dev *inputdev;
fa08359e	45	} *ideapad_priv;
ce326329 DW	46
	47	static struct {
	48	char *name;
dfa7f6fe	49	int cfgbit;
fa08359e	50	int opcode;
ce326329 DW	51	int type;
ce326329 DW	52	} ideapad_rfk_data[] = {
fa08359e IP	53	{ "ideapad_camera", 19, 0x1E, NUM_RFKILL_TYPES },
	54	{ "ideapad_wlan", 18, 0x15, RFKILL_TYPE_WLAN },
	55	{ "ideapad_bluetooth", 16, 0x17, RFKILL_TYPE_BLUETOOTH },
	56	{ "ideapad_3g", 17, 0x20, RFKILL_TYPE_WWAN },
	57	{ "ideapad_killsw", 0, 0, RFKILL_TYPE_WLAN }
58ac7aa0 DW	58	};
58ac7aa0 DW	59
bfa97b7d IP	60	static bool no_bt_rfkill;
	61	module_param(no_bt_rfkill, bool, 0444);
	62	MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
	63
6a09f21d IP	64	/*
	65	* ACPI Helpers
	66	*/
	67	#define IDEAPAD_EC_TIMEOUT (100) /* in ms */
	68
	69	static int read_method_int(acpi_handle handle, const char method, int val)
	70	{
	71	acpi_status status;
	72	unsigned long long result;
	73
	74	status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
	75	if (ACPI_FAILURE(status)) {
	76	*val = -1;
	77	return -1;
	78	} else {
	79	*val = result;
	80	return 0;
	81	}
	82	}
	83
	84	static int method_vpcr(acpi_handle handle, int cmd, int *ret)
	85	{
	86	acpi_status status;
	87	unsigned long long result;
	88	struct acpi_object_list params;
	89	union acpi_object in_obj;
	90
	91	params.count = 1;
	92	params.pointer = &in_obj;
	93	in_obj.type = ACPI_TYPE_INTEGER;
	94	in_obj.integer.value = cmd;
	95
	96	status = acpi_evaluate_integer(handle, "VPCR", &params, &result);
	97
	98	if (ACPI_FAILURE(status)) {
	99	*ret = -1;
	100	return -1;
	101	} else {
	102	*ret = result;
	103	return 0;
	104	}
	105	}
	106
	107	static int method_vpcw(acpi_handle handle, int cmd, int data)
	108	{
	109	struct acpi_object_list params;
	110	union acpi_object in_obj[2];
	111	acpi_status status;
	112
	113	params.count = 2;
	114	params.pointer = in_obj;
	115	in_obj[0].type = ACPI_TYPE_INTEGER;
	116	in_obj[0].integer.value = cmd;
	117	in_obj[1].type = ACPI_TYPE_INTEGER;
	118	in_obj[1].integer.value = data;
	119
	120	status = acpi_evaluate_object(handle, "VPCW", &params, NULL);
	121	if (status != AE_OK)
	122	return -1;
	123	return 0;
	124	}
	125
	126	static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data)
	127	{
128	int val;
129	unsigned long int end_jiffies;
130
131	if (method_vpcw(handle, 1, cmd))
132	return -1;
133
134	for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
135	time_before(jiffies, end_jiffies);) {
136	schedule();
137	if (method_vpcr(handle, 1, &val))
138	return -1;
139	if (val == 0) {
140	if (method_vpcr(handle, 0, &val))
141	return -1;
142	*data = val;
143	return 0;
144	}
145	}
146	pr_err("timeout in read_ec_cmd\n");
147	return -1;
148	}
149
150	static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
151	{
152	int val;
153	unsigned long int end_jiffies;
154
155	if (method_vpcw(handle, 0, data))
156	return -1;
157	if (method_vpcw(handle, 1, cmd))
158	return -1;
159
160	for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
161	time_before(jiffies, end_jiffies);) {
162	schedule();
163	if (method_vpcr(handle, 1, &val))
164	return -1;
165	if (val == 0)
166	return 0;
167	}
168	pr_err("timeout in write_ec_cmd\n");
169	return -1;
170	}
171	/* the above is ACPI helpers */
172
58ac7aa0 DW	173	static ssize_t show_ideapad_cam(struct device *dev,
	174	struct device_attribute *attr,
	175	char *buf)
	176	{
26c81d5c IP	177	struct ideapad_private *priv = dev_get_drvdata(dev);
	178	acpi_handle handle = priv->handle;
	179	unsigned long result;
58ac7aa0	180
26c81d5c IP	181	if (read_ec_data(handle, 0x1D, &result))
	182	return sprintf(buf, "-1\n");
	183	return sprintf(buf, "%lu\n", result);
58ac7aa0 DW	184	}
	185
	186	static ssize_t store_ideapad_cam(struct device *dev,
	187	struct device_attribute *attr,
	188	const char *buf, size_t count)
	189	{
26c81d5c IP	190	struct ideapad_private *priv = dev_get_drvdata(dev);
26c81d5c IP	191	acpi_handle handle = priv->handle;
58ac7aa0 DW	192	int ret, state;
	193
	194	if (!count)
	195	return 0;
	196	if (sscanf(buf, "%i", &state) != 1)
	197	return -EINVAL;
26c81d5c	198	ret = write_ec_cmd(handle, 0x1E, state);
58ac7aa0 DW	199	if (ret < 0)
	200	return ret;
	201	return count;
	202	}
	203
	204	static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
	205
	206	static int ideapad_rfk_set(void *data, bool blocked)
	207	{
	208	int device = (unsigned long)data;
	209
	210	if (device == IDEAPAD_DEV_KILLSW)
	211	return -EINVAL;
fa08359e IP	212
	213	return write_ec_cmd(ideapad_priv->handle,
	214	ideapad_rfk_data[device].opcode,
	215	!blocked);
58ac7aa0 DW	216	}
	217
	218	static struct rfkill_ops ideapad_rfk_ops = {
	219	.set_block = ideapad_rfk_set,
	220	};
	221
ce326329	222	static void ideapad_sync_rfk_state(struct acpi_device *adevice)
58ac7aa0	223	{
ce326329	224	struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
2b7266bd IP	225	acpi_handle handle = priv->handle;
2b7266bd IP	226	unsigned long hw_blocked;
58ac7aa0 DW	227	int i;
58ac7aa0 DW	228
2b7266bd	229	if (read_ec_data(handle, 0x23, &hw_blocked))
58ac7aa0	230	return;
2b7266bd	231	hw_blocked = !hw_blocked;
58ac7aa0	232
2b7266bd	233	for (i = IDEAPAD_DEV_WLAN; i <= IDEAPAD_DEV_KILLSW; i++)
ce326329	234	if (priv->rfk[i])
2b7266bd	235	rfkill_set_hw_state(priv->rfk[i], hw_blocked);
58ac7aa0 DW	236	}
58ac7aa0 DW	237
ce326329	238	static int ideapad_register_rfkill(struct acpi_device *adevice, int dev)
58ac7aa0	239	{
ce326329	240	struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
58ac7aa0	241	int ret;
2b7266bd	242	unsigned long sw_blocked;
58ac7aa0	243
bfa97b7d IP	244	if (no_bt_rfkill &&
	245	(ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) {
	246	/* Force to enable bluetooth when no_bt_rfkill=1 */
	247	write_ec_cmd(ideapad_priv->handle,
	248	ideapad_rfk_data[dev].opcode, 1);
	249	return 0;
	250	}
	251
2b7266bd IP	252	priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name, &adevice->dev,
2b7266bd IP	253	ideapad_rfk_data[dev].type, &ideapad_rfk_ops,
ce326329 DW	254	(void *)(long)dev);
ce326329 DW	255	if (!priv->rfk[dev])
58ac7aa0 DW	256	return -ENOMEM;
58ac7aa0 DW	257
2b7266bd IP	258	if (read_ec_data(ideapad_priv->handle, ideapad_rfk_data[dev].opcode-1,
	259	&sw_blocked)) {
	260	rfkill_init_sw_state(priv->rfk[dev], 0);
	261	} else {
	262	sw_blocked = !sw_blocked;
	263	rfkill_init_sw_state(priv->rfk[dev], sw_blocked);
	264	}
	265
ce326329	266	ret = rfkill_register(priv->rfk[dev]);
58ac7aa0	267	if (ret) {
ce326329	268	rfkill_destroy(priv->rfk[dev]);
58ac7aa0 DW	269	return ret;
	270	}
	271	return 0;
	272	}
	273
ce326329	274	static void ideapad_unregister_rfkill(struct acpi_device *adevice, int dev)
58ac7aa0	275	{
ce326329 DW	276	struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
	277
	278	if (!priv->rfk[dev])
58ac7aa0 DW	279	return;
58ac7aa0 DW	280
ce326329 DW	281	rfkill_unregister(priv->rfk[dev]);
ce326329 DW	282	rfkill_destroy(priv->rfk[dev]);
58ac7aa0 DW	283	}
58ac7aa0 DW	284
98ee6919 IP	285	/*
	286	* Platform device
	287	*/
c9f718d0 IP	288	static struct attribute *ideapad_attributes[] = {
	289	&dev_attr_camera_power.attr,
	290	NULL
	291	};
	292
	293	static struct attribute_group ideapad_attribute_group = {
	294	.attrs = ideapad_attributes
	295	};
	296
98ee6919 IP	297	static int __devinit ideapad_platform_init(void)
	298	{
	299	int result;
	300
	301	ideapad_priv->platform_device = platform_device_alloc("ideapad", -1);
	302	if (!ideapad_priv->platform_device)
	303	return -ENOMEM;
	304	platform_set_drvdata(ideapad_priv->platform_device, ideapad_priv);
	305
	306	result = platform_device_add(ideapad_priv->platform_device);
	307	if (result)
	308	goto fail_platform_device;
	309
c9f718d0 IP	310	result = sysfs_create_group(&ideapad_priv->platform_device->dev.kobj,
	311	&ideapad_attribute_group);
	312	if (result)
	313	goto fail_sysfs;
98ee6919 IP	314	return 0;
98ee6919 IP	315
c9f718d0 IP	316	fail_sysfs:
c9f718d0 IP	317	platform_device_del(ideapad_priv->platform_device);
98ee6919 IP	318	fail_platform_device:
	319	platform_device_put(ideapad_priv->platform_device);
	320	return result;
	321	}
	322
	323	static void ideapad_platform_exit(void)
	324	{
c9f718d0 IP	325	sysfs_remove_group(&ideapad_priv->platform_device->dev.kobj,
c9f718d0 IP	326	&ideapad_attribute_group);
98ee6919 IP	327	platform_device_unregister(ideapad_priv->platform_device);
	328	}
	329	/* the above is platform device */
	330
f63409ae IP	331	/*
	332	* input device
	333	*/
	334	static const struct key_entry ideapad_keymap[] = {
	335	{ KE_KEY, 0x06, { KEY_SWITCHVIDEOMODE } },
	336	{ KE_KEY, 0x0D, { KEY_WLAN } },
	337	{ KE_END, 0 },
	338	};
	339
	340	static int __devinit ideapad_input_init(void)
	341	{
	342	struct input_dev *inputdev;
	343	int error;
	344
	345	inputdev = input_allocate_device();
	346	if (!inputdev) {
	347	pr_info("Unable to allocate input device\n");
	348	return -ENOMEM;
	349	}
	350
	351	inputdev->name = "Ideapad extra buttons";
	352	inputdev->phys = "ideapad/input0";
	353	inputdev->id.bustype = BUS_HOST;
	354	inputdev->dev.parent = &ideapad_priv->platform_device->dev;
	355
	356	error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
	357	if (error) {
	358	pr_err("Unable to setup input device keymap\n");
	359	goto err_free_dev;
	360	}
	361
	362	error = input_register_device(inputdev);
	363	if (error) {
	364	pr_err("Unable to register input device\n");
	365	goto err_free_keymap;
	366	}
	367
	368	ideapad_priv->inputdev = inputdev;
	369	return 0;
	370
	371	err_free_keymap:
	372	sparse_keymap_free(inputdev);
	373	err_free_dev:
	374	input_free_device(inputdev);
	375	return error;
	376	}
	377
	378	static void __devexit ideapad_input_exit(void)
	379	{
	380	sparse_keymap_free(ideapad_priv->inputdev);
	381	input_unregister_device(ideapad_priv->inputdev);
	382	ideapad_priv->inputdev = NULL;
	383	}
	384
	385	static void ideapad_input_report(unsigned long scancode)
	386	{
	387	sparse_keymap_report_event(ideapad_priv->inputdev, scancode, 1, true);
	388	}
	389	/* the above is input device */
	390
58ac7aa0 DW	391	static const struct acpi_device_id ideapad_device_ids[] = {
	392	{ "VPC2004", 0},
	393	{ "", 0},
	394	};
	395	MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
	396
ce326329	397	static int ideapad_acpi_add(struct acpi_device *adevice)
58ac7aa0	398	{
98ee6919	399	int ret, i, cfg;
ce326329	400	struct ideapad_private *priv;
58ac7aa0	401
6f8371c0 IP	402	if (read_method_int(adevice->handle, "_CFG", &cfg))
	403	return -ENODEV;
	404
ce326329 DW	405	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	406	if (!priv)
	407	return -ENOMEM;
98ee6919	408	ideapad_priv = priv;
c9f718d0 IP	409	priv->handle = adevice->handle;
c9f718d0 IP	410	dev_set_drvdata(&adevice->dev, priv);
98ee6919 IP	411
	412	ret = ideapad_platform_init();
	413	if (ret)
	414	goto platform_failed;
ce326329	415
f63409ae IP	416	ret = ideapad_input_init();
	417	if (ret)
	418	goto input_failed;
	419
c9f718d0 IP	420	for (i = IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++) {
	421	if (test_bit(ideapad_rfk_data[i].cfgbit, (unsigned long *)&cfg))
	422	ideapad_register_rfkill(adevice, i);
58ac7aa0	423	}
ce326329	424	ideapad_sync_rfk_state(adevice);
c9f718d0	425
58ac7aa0	426	return 0;
98ee6919	427
f63409ae IP	428	input_failed:
f63409ae IP	429	ideapad_platform_exit();
98ee6919 IP	430	platform_failed:
	431	kfree(priv);
	432	return ret;
58ac7aa0 DW	433	}
58ac7aa0 DW	434
ce326329	435	static int ideapad_acpi_remove(struct acpi_device *adevice, int type)
58ac7aa0	436	{
ce326329	437	struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
58ac7aa0	438	int i;
ce326329	439
c9f718d0	440	for (i = IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++)
ce326329	441	ideapad_unregister_rfkill(adevice, i);
f63409ae	442	ideapad_input_exit();
98ee6919	443	ideapad_platform_exit();
ce326329 DW	444	dev_set_drvdata(&adevice->dev, NULL);
ce326329 DW	445	kfree(priv);
c9f718d0	446
58ac7aa0 DW	447	return 0;
	448	}
	449
ce326329	450	static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
58ac7aa0	451	{
8e7d3543 IP	452	acpi_handle handle = adevice->handle;
	453	unsigned long vpc1, vpc2, vpc_bit;
	454
	455	if (read_ec_data(handle, 0x10, &vpc1))
	456	return;
	457	if (read_ec_data(handle, 0x1A, &vpc2))
	458	return;
	459
	460	vpc1 = (vpc2 << 8) \| vpc1;
	461	for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) {
	462	if (test_bit(vpc_bit, &vpc1)) {
	463	if (vpc_bit == 9)
	464	ideapad_sync_rfk_state(adevice);
f63409ae IP	465	else
f63409ae IP	466	ideapad_input_report(vpc_bit);
8e7d3543 IP	467	}
8e7d3543 IP	468	}
58ac7aa0 DW	469	}
	470
	471	static struct acpi_driver ideapad_acpi_driver = {
	472	.name = "ideapad_acpi",
	473	.class = "IdeaPad",
	474	.ids = ideapad_device_ids,
	475	.ops.add = ideapad_acpi_add,
	476	.ops.remove = ideapad_acpi_remove,
	477	.ops.notify = ideapad_acpi_notify,
	478	.owner = THIS_MODULE,
	479	};
	480
	481
	482	static int __init ideapad_acpi_module_init(void)
	483	{
	484	acpi_bus_register_driver(&ideapad_acpi_driver);
	485
	486	return 0;
	487	}
	488
	489
	490	static void __exit ideapad_acpi_module_exit(void)
	491	{
	492	acpi_bus_unregister_driver(&ideapad_acpi_driver);
	493
	494	}
	495
	496	MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
	497	MODULE_DESCRIPTION("IdeaPad ACPI Extras");
	498	MODULE_LICENSE("GPL");
	499
	500	module_init(ideapad_acpi_module_init);
	501	module_exit(ideapad_acpi_module_exit);