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Subject[PATCH 3/3] ideapad: add hotkey support
Date
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.

Signed-off-by: Ike Panhc <ike.pan@canonical.com>
---
drivers/platform/x86/ideapad-laptop.c | 74 +++++++++++++++++++++++++++++++++
1 files changed, 74 insertions(+), 0 deletions(-)
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index d75c21f..d397034 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -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 +328,68 @@ 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 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 ideapad_input_exit(void)
+{
+ if (ideapad_priv->inputdev) {
+ 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 +415,10 @@ 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 +427,8 @@ static int ideapad_acpi_add(struct acpi_device *adevice)

return 0;

+input_failed:
+ ideapad_platform_exit();
platform_failed:
kfree(priv);
return ret;
@@ -370,6 +441,7 @@ 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 +464,8 @@ 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);
}
}
}
--
1.7.1


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