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ideapad: add hotkey support 

Hotkey enabled by this patch:
  Fn+F3: Video mode switch
  Fn+F5: software rfkill for wifi

For some ideapad when push Fn+F3, hardware generates Super-P keys, those key
will not be enabled by this patch.

Thanks for Dave Hansen report the problem. If CONFIG_INPUT_SPARSEKMAP is not
set, when building, you will have error message:

  ERROR: "sparse_keymap_setup" [drivers/platform/x86/ideapad-laptop.ko] undefined!
  ERROR: "sparse_keymap_free" [drivers/platform/x86/ideapad-laptop.ko] undefined!
  ERROR: "sparse_keymap_report_event" [drivers/platform/x86/ideapad-laptop.ko] undefined!

To select INPUT_SPARSEKMAP solve this issue.

Ref: http://lkml.org/lkml/2010/12/2/340

Signed-off-by: Ike Panhc <ike.pan@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Ike Panhc 2010-12-13 18:00:38 +08:00 committed by Matthew Garrett
parent c9f718d0c6
commit f63409ae91
2 changed files with 73 additions and 0 deletions
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1
drivers/platform/x86/Kconfig
View File

@ -226,6 +226,7 @@ config IDEAPAD_LAPTOP
tristate "Lenovo IdeaPad Laptop Extras"
depends on ACPI
depends on RFKILL
select INPUT_SPARSEKMAP
help
This is a driver for the rfkill switches on Lenovo IdeaPad netbooks.

72
drivers/platform/x86/ideapad-laptop.c
View File

@ -28,6 +28,8 @@
#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
@ -39,6 +41,7 @@ struct ideapad_private {
acpi_handle handle;
struct rfkill *rfk[5];
struct platform_device *platform_device;
struct input_dev *inputdev;
} *ideapad_priv;
static struct {
@ -325,6 +328,66 @@ static void ideapad_platform_exit(void)
}
/* 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},
@ -350,6 +413,10 @@ static int ideapad_acpi_add(struct acpi_device *adevice)
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);
@ -358,6 +425,8 @@ static int ideapad_acpi_add(struct acpi_device *adevice)
return 0;
input_failed:
ideapad_platform_exit();
platform_failed:
kfree(priv);
return ret;
@ -370,6 +439,7 @@ static int ideapad_acpi_remove(struct acpi_device *adevice, int type)
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);
@ -392,6 +462,8 @@ static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
if (test_bit(vpc_bit, &vpc1)) {
if (vpc_bit == 9)
ideapad_sync_rfk_state(adevice);
else
ideapad_input_report(vpc_bit);
}
}
}