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HID: lenovo: Add sensitivity control to compact keyboards 

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

Signed-off-by: Jamie Lentin <jm@lentin.co.uk>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
hifive-unleashed-5.1
Jamie Lentin 2014-12-16 21:26:45 +00:00 committed by Jiri Kosina
parent 0349678ccd
commit e3cb0acd23
1 changed files with 41 additions and 1 deletions
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42
drivers/hid/hid-lenovo.c
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@ -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);