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Commit f63409ae authored by Ike Panhc's avatar Ike Panhc Committed by Matthew Garrett
Browse files

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: default avatarIke Panhc <ike.pan@canonical.com>
Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
parent c9f718d0

drivers/platform/x86/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -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.

drivers/platform/x86/ideapad-laptop.c

+72 −0
Original line number Diff line number Diff line
@@ -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);

		}

	}

}