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Commit e3cb0acd authored by Jamie Lentin's avatar Jamie Lentin Committed by Jiri Kosina
Browse files

HID: lenovo: Add sensitivity control to compact keyboards 



The trackpoint sensitivity can also be controlled, expose this via
sysfs.

Signed-off-by: default avatarJamie Lentin <jm@lentin.co.uk>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 0349678c

drivers/hid/hid-lenovo.c

+41 −1
Original line number Diff line number Diff line
@@ -38,6 +38,7 @@ struct lenovo_drvdata_tpkbd { 


struct lenovo_drvdata_cptkbd {

	bool fn_lock;

	int sensitivity;

};



#define map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))
@@ -145,6 +146,7 @@ static void lenovo_features_set_cptkbd(struct hid_device *hdev) 
	struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);



	ret = lenovo_send_cmd_cptkbd(hdev, 0x05, cptkbd_data->fn_lock);

	ret = lenovo_send_cmd_cptkbd(hdev, 0x02, cptkbd_data->sensitivity);

	if (ret)

		hid_err(hdev, "Fn-lock setting failed: %d\n", ret);

}
@@ -179,13 +181,50 @@ static ssize_t attr_fn_lock_store_cptkbd(struct device *dev, 
	return count;

}



static ssize_t attr_sensitivity_show_cptkbd(struct device *dev,

		struct device_attribute *attr,

		char *buf)

{

	struct hid_device *hdev = container_of(dev, struct hid_device, dev);

	struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);



	return snprintf(buf, PAGE_SIZE, "%u\n",

		cptkbd_data->sensitivity);

}



static ssize_t attr_sensitivity_store_cptkbd(struct device *dev,

		struct device_attribute *attr,

		const char *buf,

		size_t count)

{

	struct hid_device *hdev = container_of(dev, struct hid_device, dev);

	struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);

	int value;



	if (kstrtoint(buf, 10, &value) || value < 1 || value > 255)

		return -EINVAL;



	cptkbd_data->sensitivity = value;

	lenovo_features_set_cptkbd(hdev);



	return count;

}





static struct device_attribute dev_attr_fn_lock_cptkbd =

	__ATTR(fn_lock, S_IWUSR | S_IRUGO,

			attr_fn_lock_show_cptkbd,

			attr_fn_lock_store_cptkbd);



static struct device_attribute dev_attr_sensitivity_cptkbd =

	__ATTR(sensitivity, S_IWUSR | S_IRUGO,

			attr_sensitivity_show_cptkbd,

			attr_sensitivity_store_cptkbd);





static struct attribute *lenovo_attributes_cptkbd[] = {

	&dev_attr_fn_lock_cptkbd.attr,

	&dev_attr_sensitivity_cptkbd.attr,

	NULL

};
@@ -594,8 +633,9 @@ static int lenovo_probe_cptkbd(struct hid_device *hdev) 
	if (ret)

		hid_warn(hdev, "Failed to switch F7/9/11 mode: %d\n", ret);



	/* Turn Fn-Lock on by default */

	/* Set keyboard settings to known state */

	cptkbd_data->fn_lock = true;

	cptkbd_data->sensitivity = 0x05;

	lenovo_features_set_cptkbd(hdev);



	ret = sysfs_create_group(&hdev->dev.kobj, &lenovo_attr_group_cptkbd);