+++ /dev/null
-/*
- * 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>
-
-#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 {
- struct rfkill *rfk[5];
-};
-
-static struct {
- char *name;
- int type;
-} ideapad_rfk_data[] = {
- /* camera has no rfkill */
- { "ideapad_wlan", RFKILL_TYPE_WLAN },
- { "ideapad_bluetooth", RFKILL_TYPE_BLUETOOTH },
- { "ideapad_3g", RFKILL_TYPE_WWAN },
- { "ideapad_killsw", RFKILL_TYPE_WLAN }
-};
-
-static int ideapad_dev_exists(int device)
-{
- acpi_status status;
- union acpi_object in_param;
- struct acpi_object_list input = { 1, &in_param };
- struct acpi_buffer output;
- union acpi_object out_obj;
-
- output.length = sizeof(out_obj);
- output.pointer = &out_obj;
-
- in_param.type = ACPI_TYPE_INTEGER;
- in_param.integer.value = device + 1;
-
- status = acpi_evaluate_object(NULL, "\\_SB_.DECN", &input, &output);
- if (ACPI_FAILURE(status)) {
- printk(KERN_WARNING "IdeaPAD \\_SB_.DECN method failed %d. Is this an IdeaPAD?\n", status);
- return -ENODEV;
- }
- if (out_obj.type != ACPI_TYPE_INTEGER) {
- printk(KERN_WARNING "IdeaPAD \\_SB_.DECN method returned unexpected type\n");
- return -ENODEV;
- }
- return out_obj.integer.value;
-}
-
-static int ideapad_dev_get_state(int device)
-{
- acpi_status status;
- union acpi_object in_param;
- struct acpi_object_list input = { 1, &in_param };
- struct acpi_buffer output;
- union acpi_object out_obj;
-
- output.length = sizeof(out_obj);
- output.pointer = &out_obj;
-
- in_param.type = ACPI_TYPE_INTEGER;
- in_param.integer.value = device + 1;
-
- status = acpi_evaluate_object(NULL, "\\_SB_.GECN", &input, &output);
- if (ACPI_FAILURE(status)) {
- printk(KERN_WARNING "IdeaPAD \\_SB_.GECN method failed %d\n", status);
- return -ENODEV;
- }
- if (out_obj.type != ACPI_TYPE_INTEGER) {
- printk(KERN_WARNING "IdeaPAD \\_SB_.GECN method returned unexpected type\n");
- return -ENODEV;
- }
- return out_obj.integer.value;
-}
-
-static int ideapad_dev_set_state(int device, int state)
-{
- acpi_status status;
- union acpi_object in_params[2];
- struct acpi_object_list input = { 2, in_params };
-
- in_params[0].type = ACPI_TYPE_INTEGER;
- in_params[0].integer.value = device + 1;
- in_params[1].type = ACPI_TYPE_INTEGER;
- in_params[1].integer.value = state;
-
- status = acpi_evaluate_object(NULL, "\\_SB_.SECN", &input, NULL);
- if (ACPI_FAILURE(status)) {
- printk(KERN_WARNING "IdeaPAD \\_SB_.SECN method failed %d\n", status);
- return -ENODEV;
- }
- return 0;
-}
-static ssize_t show_ideapad_cam(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- int state = ideapad_dev_get_state(IDEAPAD_DEV_CAMERA);
- if (state < 0)
- return state;
-
- return sprintf(buf, "%d\n", state);
-}
-
-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 = ideapad_dev_set_state(IDEAPAD_DEV_CAMERA, !!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 ideapad_dev_set_state(device, !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);
- int hw_blocked = !ideapad_dev_get_state(IDEAPAD_DEV_KILLSW);
- int i;
-
- rfkill_set_hw_state(priv->rfk[IDEAPAD_DEV_KILLSW], 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);
- if (hw_blocked)
- return;
-
- for (i = IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++)
- if (priv->rfk[i])
- rfkill_set_sw_state(priv->rfk[i], !ideapad_dev_get_state(i));
-}
-
-static int ideapad_register_rfkill(struct acpi_device *adevice, int dev)
-{
- struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
- int ret;
-
- priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev-1].name, &adevice->dev,
- ideapad_rfk_data[dev-1].type, &ideapad_rfk_ops,
- (void *)(long)dev);
- if (!priv->rfk[dev])
- return -ENOMEM;
-
- 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]);
-}
-
-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 i;
- int devs_present[5];
- struct ideapad_private *priv;
-
- for (i = IDEAPAD_DEV_CAMERA; i < IDEAPAD_DEV_KILLSW; i++) {
- devs_present[i] = ideapad_dev_exists(i);
- if (devs_present[i] < 0)
- return devs_present[i];
- }
-
- /* The hardware switch is always present */
- devs_present[IDEAPAD_DEV_KILLSW] = 1;
-
- priv = kzalloc(sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
-
- if (devs_present[IDEAPAD_DEV_CAMERA]) {
- int ret = device_create_file(&adevice->dev, &dev_attr_camera_power);
- if (ret) {
- kfree(priv);
- return ret;
- }
- }
-
- dev_set_drvdata(&adevice->dev, priv);
- for (i = IDEAPAD_DEV_WLAN; i <= IDEAPAD_DEV_KILLSW; i++) {
- if (!devs_present[i])
- continue;
-
- ideapad_register_rfkill(adevice, i);
- }
- ideapad_sync_rfk_state(adevice);
- return 0;
-}
-
-static int ideapad_acpi_remove(struct acpi_device *adevice, int type)
-{
- struct ideapad_private *priv = dev_get_drvdata(&adevice->dev);
- int i;
-
- device_remove_file(&adevice->dev, &dev_attr_camera_power);
-
- for (i = IDEAPAD_DEV_WLAN; i <= IDEAPAD_DEV_KILLSW; i++)
- ideapad_unregister_rfkill(adevice, i);
-
- dev_set_drvdata(&adevice->dev, NULL);
- kfree(priv);
- return 0;
-}
-
-static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
-{
- ideapad_sync_rfk_state(adevice);
-}
-
-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);
projects / mv-sheeva.git / blobdiff