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

/*
 *  ideapad-laptop.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.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#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_RFKILL_DEV_NUM	(3)

#define CFG_BT_BIT	(16)
#define CFG_3G_BIT	(17)
#define CFG_WIFI_BIT	(18)

struct ideapad_private {
	struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
	struct platform_device *platform_device;
	struct input_dev *inputdev;
	unsigned long cfg;
};

static acpi_handle ideapad_handle;
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;
}

/*
 * sysfs
 */
static ssize_t show_ideapad_cam(struct device *dev,
				struct device_attribute *attr,
				char *buf)
{
	unsigned long result;

	if (read_ec_data(ideapad_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)
{
	int ret, state;

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

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

static ssize_t show_ideapad_cfg(struct device *dev,
				struct device_attribute *attr,
				char *buf)
{
	struct ideapad_private *priv = dev_get_drvdata(dev);

	return sprintf(buf, "0x%.8lX\n", priv->cfg);
}

static DEVICE_ATTR(cfg, 0444, show_ideapad_cfg, NULL);

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

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

/*
 * Rfkill
 */
struct ideapad_rfk_data {
	char *name;
	int cfgbit;
	int opcode;
	int type;
};

const struct ideapad_rfk_data ideapad_rfk_data[] = {
	{ "ideapad_wlan",      CFG_WIFI_BIT, 0x15, RFKILL_TYPE_WLAN },
	{ "ideapad_bluetooth", CFG_BT_BIT,   0x17, RFKILL_TYPE_BLUETOOTH },
	{ "ideapad_3g",        CFG_3G_BIT,   0x20, RFKILL_TYPE_WWAN },
};

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

	return write_ec_cmd(ideapad_handle, 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);
	unsigned long hw_blocked;
	int i;

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

	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
		if (priv->rfk[i])
			rfkill_set_hw_state(priv->rfk[i], hw_blocked);
}

static int __devinit 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_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_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 __devexit 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 int __devinit ideapad_platform_init(struct ideapad_private *priv)
{
	int result;

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

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

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

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

static void ideapad_platform_exit(struct ideapad_private *priv)
{
	sysfs_remove_group(&priv->platform_device->dev.kobj,
			   &ideapad_attribute_group);
	platform_device_unregister(priv->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(struct ideapad_private *priv)
{
	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 = &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;
	}

	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(struct ideapad_private *priv)
{
	sparse_keymap_free(priv->inputdev);
	input_unregister_device(priv->inputdev);
	priv->inputdev = NULL;
}

static void ideapad_input_report(struct ideapad_private *priv,
				 unsigned long scancode)
{
	sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
}

/*
 * module init/exit
 */
static const struct acpi_device_id ideapad_device_ids[] = {
	{ "VPC2004", 0},
	{ "", 0},
};
MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);

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

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

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

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

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

	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++) {
		if (test_bit(ideapad_rfk_data[i].cfgbit, &cfg))
			ideapad_register_rfkill(adevice, i);
		else
			priv->rfk[i] = NULL;
	}
	ideapad_sync_rfk_state(adevice);

	return 0;

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

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

	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
		ideapad_unregister_rfkill(adevice, i);
	ideapad_input_exit(priv);
	ideapad_platform_exit(priv);
	dev_set_drvdata(&adevice->dev, NULL);
	kfree(priv);

	return 0;
}

static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
{
	struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
	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 if (vpc_bit == 4)
				read_ec_data(handle, 0x12, &vpc2);
			else
				ideapad_input_report(priv, 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)
{
	return acpi_bus_register_driver(&ideapad_acpi_driver);
}

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	1	/*
a4b5a279	2	* ideapad-laptop.c - Lenovo IdeaPad ACPI Extras
58ac7aa0 DW	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
9ab23989 JP	23	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
9ab23989 JP	24
58ac7aa0 DW	25	#include <linux/kernel.h>
	26	#include <linux/module.h>
	27	#include <linux/init.h>
	28	#include <linux/types.h>
	29	#include <acpi/acpi_bus.h>
	30	#include <acpi/acpi_drivers.h>
	31	#include <linux/rfkill.h>
98ee6919	32	#include <linux/platform_device.h>
f63409ae IP	33	#include <linux/input.h>
f63409ae IP	34	#include <linux/input/sparse-keymap.h>
58ac7aa0	35
c1f73658	36	#define IDEAPAD_RFKILL_DEV_NUM (3)
58ac7aa0	37
3371f481 IP	38	#define CFG_BT_BIT (16)
	39	#define CFG_3G_BIT (17)
	40	#define CFG_WIFI_BIT (18)
	41
ce326329	42	struct ideapad_private {
c1f73658	43	struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
98ee6919	44	struct platform_device *platform_device;
f63409ae	45	struct input_dev *inputdev;
3371f481	46	unsigned long cfg;
58ac7aa0 DW	47	};
58ac7aa0 DW	48
c1f73658	49	static acpi_handle ideapad_handle;
bfa97b7d IP	50	static bool no_bt_rfkill;
	51	module_param(no_bt_rfkill, bool, 0444);
	52	MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
	53
6a09f21d IP	54	/*
	55	* ACPI Helpers
	56	*/
	57	#define IDEAPAD_EC_TIMEOUT (100) /* in ms */
	58
	59	static int read_method_int(acpi_handle handle, const char method, int val)
	60	{
	61	acpi_status status;
	62	unsigned long long result;
	63
	64	status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
	65	if (ACPI_FAILURE(status)) {
	66	*val = -1;
	67	return -1;
	68	} else {
	69	*val = result;
	70	return 0;
	71	}
	72	}
	73
	74	static int method_vpcr(acpi_handle handle, int cmd, int *ret)
	75	{
	76	acpi_status status;
	77	unsigned long long result;
	78	struct acpi_object_list params;
	79	union acpi_object in_obj;
	80
	81	params.count = 1;
	82	params.pointer = &in_obj;
	83	in_obj.type = ACPI_TYPE_INTEGER;
	84	in_obj.integer.value = cmd;
	85
	86	status = acpi_evaluate_integer(handle, "VPCR", &params, &result);
	87
	88	if (ACPI_FAILURE(status)) {
	89	*ret = -1;
	90	return -1;
	91	} else {
	92	*ret = result;
	93	return 0;
	94	}
	95	}
	96
	97	static int method_vpcw(acpi_handle handle, int cmd, int data)
	98	{
	99	struct acpi_object_list params;
	100	union acpi_object in_obj[2];
	101	acpi_status status;
	102
	103	params.count = 2;
	104	params.pointer = in_obj;
	105	in_obj[0].type = ACPI_TYPE_INTEGER;
	106	in_obj[0].integer.value = cmd;
	107	in_obj[1].type = ACPI_TYPE_INTEGER;
	108	in_obj[1].integer.value = data;
	109
	110	status = acpi_evaluate_object(handle, "VPCW", &params, NULL);
	111	if (status != AE_OK)
	112	return -1;
	113	return 0;
	114	}
	115
	116	static int read_ec_data(acpi_handle handle, int cmd, unsigned long *data)
	117	{
118	int val;
119	unsigned long int end_jiffies;
120
121	if (method_vpcw(handle, 1, cmd))
122	return -1;
123
124	for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
125	time_before(jiffies, end_jiffies);) {
126	schedule();
127	if (method_vpcr(handle, 1, &val))
128	return -1;
129	if (val == 0) {
130	if (method_vpcr(handle, 0, &val))
131	return -1;
132	*data = val;
133	return 0;
134	}
135	}
136	pr_err("timeout in read_ec_cmd\n");
137	return -1;
138	}
139
140	static int write_ec_cmd(acpi_handle handle, int cmd, unsigned long data)
141	{
142	int val;
143	unsigned long int end_jiffies;
144
145	if (method_vpcw(handle, 0, data))
146	return -1;
147	if (method_vpcw(handle, 1, cmd))
148	return -1;
149
150	for (end_jiffies = jiffies+(HZ)*IDEAPAD_EC_TIMEOUT/1000+1;
151	time_before(jiffies, end_jiffies);) {
152	schedule();
153	if (method_vpcr(handle, 1, &val))
154	return -1;
155	if (val == 0)
156	return 0;
157	}
158	pr_err("timeout in write_ec_cmd\n");
159	return -1;
160	}
6a09f21d	161
a4b5a279	162	/*
3371f481	163	* sysfs
a4b5a279	164	*/
58ac7aa0 DW	165	static ssize_t show_ideapad_cam(struct device *dev,
	166	struct device_attribute *attr,
	167	char *buf)
	168	{
26c81d5c	169	unsigned long result;
58ac7aa0	170
c1f73658	171	if (read_ec_data(ideapad_handle, 0x1D, &result))
26c81d5c IP	172	return sprintf(buf, "-1\n");
26c81d5c IP	173	return sprintf(buf, "%lu\n", result);
58ac7aa0 DW	174	}
	175
	176	static ssize_t store_ideapad_cam(struct device *dev,
	177	struct device_attribute *attr,
	178	const char *buf, size_t count)
	179	{
	180	int ret, state;
	181
	182	if (!count)
	183	return 0;
	184	if (sscanf(buf, "%i", &state) != 1)
	185	return -EINVAL;
c1f73658	186	ret = write_ec_cmd(ideapad_handle, 0x1E, state);
58ac7aa0 DW	187	if (ret < 0)
	188	return ret;
	189	return count;
	190	}
	191
	192	static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad_cam);
	193
3371f481 IP	194	static ssize_t show_ideapad_cfg(struct device *dev,
	195	struct device_attribute *attr,
	196	char *buf)
	197	{
	198	struct ideapad_private *priv = dev_get_drvdata(dev);
	199
	200	return sprintf(buf, "0x%.8lX\n", priv->cfg);
	201	}
	202
	203	static DEVICE_ATTR(cfg, 0444, show_ideapad_cfg, NULL);
	204
	205	static struct attribute *ideapad_attributes[] = {
	206	&dev_attr_camera_power.attr,
	207	&dev_attr_cfg.attr,
	208	NULL
	209	};
	210
	211	static struct attribute_group ideapad_attribute_group = {
	212	.attrs = ideapad_attributes
	213	};
	214
a4b5a279 IP	215	/*
	216	* Rfkill
	217	*/
c1f73658 IP	218	struct ideapad_rfk_data {
	219	char *name;
	220	int cfgbit;
	221	int opcode;
	222	int type;
	223	};
	224
	225	const struct ideapad_rfk_data ideapad_rfk_data[] = {
3371f481 IP	226	{ "ideapad_wlan", CFG_WIFI_BIT, 0x15, RFKILL_TYPE_WLAN },
	227	{ "ideapad_bluetooth", CFG_BT_BIT, 0x17, RFKILL_TYPE_BLUETOOTH },
	228	{ "ideapad_3g", CFG_3G_BIT, 0x20, RFKILL_TYPE_WWAN },
c1f73658 IP	229	};
c1f73658 IP	230
58ac7aa0 DW	231	static int ideapad_rfk_set(void *data, bool blocked)
58ac7aa0 DW	232	{
c1f73658	233	unsigned long opcode = (unsigned long)data;
fa08359e	234
c1f73658	235	return write_ec_cmd(ideapad_handle, opcode, !blocked);
58ac7aa0 DW	236	}
	237
	238	static struct rfkill_ops ideapad_rfk_ops = {
	239	.set_block = ideapad_rfk_set,
	240	};
	241
ce326329	242	static void ideapad_sync_rfk_state(struct acpi_device *adevice)
58ac7aa0	243	{
ce326329	244	struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
2b7266bd	245	unsigned long hw_blocked;
58ac7aa0 DW	246	int i;
58ac7aa0 DW	247
c1f73658	248	if (read_ec_data(ideapad_handle, 0x23, &hw_blocked))
58ac7aa0	249	return;
2b7266bd	250	hw_blocked = !hw_blocked;
58ac7aa0	251
c1f73658	252	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
ce326329	253	if (priv->rfk[i])
2b7266bd	254	rfkill_set_hw_state(priv->rfk[i], hw_blocked);
58ac7aa0 DW	255	}
58ac7aa0 DW	256
a4b5a279 IP	257	static int __devinit ideapad_register_rfkill(struct acpi_device *adevice,
a4b5a279 IP	258	int dev)
58ac7aa0	259	{
ce326329	260	struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
58ac7aa0	261	int ret;
2b7266bd	262	unsigned long sw_blocked;
58ac7aa0	263
bfa97b7d IP	264	if (no_bt_rfkill &&
	265	(ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH)) {
	266	/* Force to enable bluetooth when no_bt_rfkill=1 */
c1f73658	267	write_ec_cmd(ideapad_handle,
bfa97b7d IP	268	ideapad_rfk_data[dev].opcode, 1);
	269	return 0;
	270	}
	271
2b7266bd IP	272	priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name, &adevice->dev,
2b7266bd IP	273	ideapad_rfk_data[dev].type, &ideapad_rfk_ops,
ce326329 DW	274	(void *)(long)dev);
ce326329 DW	275	if (!priv->rfk[dev])
58ac7aa0 DW	276	return -ENOMEM;
58ac7aa0 DW	277
c1f73658	278	if (read_ec_data(ideapad_handle, ideapad_rfk_data[dev].opcode-1,
2b7266bd IP	279	&sw_blocked)) {
	280	rfkill_init_sw_state(priv->rfk[dev], 0);
	281	} else {
	282	sw_blocked = !sw_blocked;
	283	rfkill_init_sw_state(priv->rfk[dev], sw_blocked);
	284	}
	285
ce326329	286	ret = rfkill_register(priv->rfk[dev]);
58ac7aa0	287	if (ret) {
ce326329	288	rfkill_destroy(priv->rfk[dev]);
58ac7aa0 DW	289	return ret;
	290	}
	291	return 0;
	292	}
	293
a4b5a279 IP	294	static void __devexit ideapad_unregister_rfkill(struct acpi_device *adevice,
a4b5a279 IP	295	int dev)
58ac7aa0	296	{
ce326329 DW	297	struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
	298
	299	if (!priv->rfk[dev])
58ac7aa0 DW	300	return;
58ac7aa0 DW	301
ce326329 DW	302	rfkill_unregister(priv->rfk[dev]);
ce326329 DW	303	rfkill_destroy(priv->rfk[dev]);
58ac7aa0 DW	304	}
58ac7aa0 DW	305
98ee6919 IP	306	/*
	307	* Platform device
	308	*/
8693ae84	309	static int __devinit ideapad_platform_init(struct ideapad_private *priv)
98ee6919 IP	310	{
	311	int result;
	312
8693ae84 IP	313	priv->platform_device = platform_device_alloc("ideapad", -1);
8693ae84 IP	314	if (!priv->platform_device)
98ee6919	315	return -ENOMEM;
8693ae84	316	platform_set_drvdata(priv->platform_device, priv);
98ee6919	317
8693ae84	318	result = platform_device_add(priv->platform_device);
98ee6919 IP	319	if (result)
	320	goto fail_platform_device;
	321
8693ae84	322	result = sysfs_create_group(&priv->platform_device->dev.kobj,
c9f718d0 IP	323	&ideapad_attribute_group);
	324	if (result)
	325	goto fail_sysfs;
98ee6919 IP	326	return 0;
98ee6919 IP	327
c9f718d0	328	fail_sysfs:
8693ae84	329	platform_device_del(priv->platform_device);
98ee6919	330	fail_platform_device:
8693ae84	331	platform_device_put(priv->platform_device);
98ee6919 IP	332	return result;
	333	}
	334
8693ae84	335	static void ideapad_platform_exit(struct ideapad_private *priv)
98ee6919	336	{
8693ae84	337	sysfs_remove_group(&priv->platform_device->dev.kobj,
c9f718d0	338	&ideapad_attribute_group);
8693ae84	339	platform_device_unregister(priv->platform_device);
98ee6919	340	}
98ee6919	341
f63409ae IP	342	/*
	343	* input device
	344	*/
	345	static const struct key_entry ideapad_keymap[] = {
	346	{ KE_KEY, 0x06, { KEY_SWITCHVIDEOMODE } },
	347	{ KE_KEY, 0x0D, { KEY_WLAN } },
	348	{ KE_END, 0 },
	349	};
	350
8693ae84	351	static int __devinit ideapad_input_init(struct ideapad_private *priv)
f63409ae IP	352	{
	353	struct input_dev *inputdev;
	354	int error;
	355
	356	inputdev = input_allocate_device();
	357	if (!inputdev) {
	358	pr_info("Unable to allocate input device\n");
	359	return -ENOMEM;
	360	}
	361
	362	inputdev->name = "Ideapad extra buttons";
	363	inputdev->phys = "ideapad/input0";
	364	inputdev->id.bustype = BUS_HOST;
8693ae84	365	inputdev->dev.parent = &priv->platform_device->dev;
f63409ae IP	366
	367	error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
	368	if (error) {
	369	pr_err("Unable to setup input device keymap\n");
	370	goto err_free_dev;
	371	}
	372
	373	error = input_register_device(inputdev);
	374	if (error) {
	375	pr_err("Unable to register input device\n");
	376	goto err_free_keymap;
	377	}
	378
8693ae84	379	priv->inputdev = inputdev;
f63409ae IP	380	return 0;
	381
	382	err_free_keymap:
	383	sparse_keymap_free(inputdev);
	384	err_free_dev:
	385	input_free_device(inputdev);
	386	return error;
	387	}
	388
8693ae84	389	static void __devexit ideapad_input_exit(struct ideapad_private *priv)
f63409ae	390	{
8693ae84 IP	391	sparse_keymap_free(priv->inputdev);
	392	input_unregister_device(priv->inputdev);
	393	priv->inputdev = NULL;
f63409ae IP	394	}
f63409ae IP	395
8693ae84 IP	396	static void ideapad_input_report(struct ideapad_private *priv,
8693ae84 IP	397	unsigned long scancode)
f63409ae	398	{
8693ae84	399	sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
f63409ae	400	}
f63409ae	401
a4b5a279 IP	402	/*
	403	* module init/exit
	404	*/
58ac7aa0 DW	405	static const struct acpi_device_id ideapad_device_ids[] = {
	406	{ "VPC2004", 0},
	407	{ "", 0},
	408	};
	409	MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
	410
a4b5a279	411	static int __devinit ideapad_acpi_add(struct acpi_device *adevice)
58ac7aa0	412	{
3371f481 IP	413	int ret, i;
3371f481 IP	414	unsigned long cfg;
ce326329	415	struct ideapad_private *priv;
58ac7aa0	416
3371f481	417	if (read_method_int(adevice->handle, "_CFG", (int *)&cfg))
6f8371c0 IP	418	return -ENODEV;
6f8371c0 IP	419
ce326329 DW	420	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	421	if (!priv)
	422	return -ENOMEM;
c9f718d0	423	dev_set_drvdata(&adevice->dev, priv);
c1f73658	424	ideapad_handle = adevice->handle;
3371f481	425	priv->cfg = cfg;
98ee6919	426
8693ae84	427	ret = ideapad_platform_init(priv);
98ee6919 IP	428	if (ret)
98ee6919 IP	429	goto platform_failed;
ce326329	430
8693ae84	431	ret = ideapad_input_init(priv);
f63409ae IP	432	if (ret)
	433	goto input_failed;
	434
c1f73658	435	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++) {
3371f481	436	if (test_bit(ideapad_rfk_data[i].cfgbit, &cfg))
c9f718d0	437	ideapad_register_rfkill(adevice, i);
c1f73658 IP	438	else
c1f73658 IP	439	priv->rfk[i] = NULL;
58ac7aa0	440	}
ce326329	441	ideapad_sync_rfk_state(adevice);
c9f718d0	442
58ac7aa0	443	return 0;
98ee6919	444
f63409ae	445	input_failed:
8693ae84	446	ideapad_platform_exit(priv);
98ee6919 IP	447	platform_failed:
	448	kfree(priv);
	449	return ret;
58ac7aa0 DW	450	}
58ac7aa0 DW	451
a4b5a279	452	static int __devexit ideapad_acpi_remove(struct acpi_device *adevice, int type)
58ac7aa0	453	{
ce326329	454	struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
58ac7aa0	455	int i;
ce326329	456
c1f73658	457	for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
ce326329	458	ideapad_unregister_rfkill(adevice, i);
8693ae84 IP	459	ideapad_input_exit(priv);
8693ae84 IP	460	ideapad_platform_exit(priv);
ce326329 DW	461	dev_set_drvdata(&adevice->dev, NULL);
ce326329 DW	462	kfree(priv);
c9f718d0	463
58ac7aa0 DW	464	return 0;
	465	}
	466
ce326329	467	static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
58ac7aa0	468	{
8693ae84	469	struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
8e7d3543 IP	470	acpi_handle handle = adevice->handle;
	471	unsigned long vpc1, vpc2, vpc_bit;
	472
	473	if (read_ec_data(handle, 0x10, &vpc1))
	474	return;
	475	if (read_ec_data(handle, 0x1A, &vpc2))
	476	return;
	477
	478	vpc1 = (vpc2 << 8) \| vpc1;
	479	for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) {
	480	if (test_bit(vpc_bit, &vpc1)) {
	481	if (vpc_bit == 9)
	482	ideapad_sync_rfk_state(adevice);
883ae799 IP	483	else if (vpc_bit == 4)
883ae799 IP	484	read_ec_data(handle, 0x12, &vpc2);
f63409ae	485	else
8693ae84	486	ideapad_input_report(priv, vpc_bit);
8e7d3543 IP	487	}
8e7d3543 IP	488	}
58ac7aa0 DW	489	}
	490
	491	static struct acpi_driver ideapad_acpi_driver = {
	492	.name = "ideapad_acpi",
	493	.class = "IdeaPad",
	494	.ids = ideapad_device_ids,
	495	.ops.add = ideapad_acpi_add,
	496	.ops.remove = ideapad_acpi_remove,
	497	.ops.notify = ideapad_acpi_notify,
	498	.owner = THIS_MODULE,
	499	};
	500
58ac7aa0 DW	501	static int __init ideapad_acpi_module_init(void)
58ac7aa0 DW	502	{
a4b5a279	503	return acpi_bus_register_driver(&ideapad_acpi_driver);
58ac7aa0 DW	504	}
58ac7aa0 DW	505
58ac7aa0 DW	506	static void __exit ideapad_acpi_module_exit(void)
	507	{
	508	acpi_bus_unregister_driver(&ideapad_acpi_driver);
58ac7aa0 DW	509	}
	510
	511	MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
	512	MODULE_DESCRIPTION("IdeaPad ACPI Extras");
	513	MODULE_LICENSE("GPL");
	514
	515	module_init(ideapad_acpi_module_init);
	516	module_exit(ideapad_acpi_module_exit);