From: Benjamin Tissoires <benjamin.tissoires@redhat.com>
To: Jiri Kosina <jikos@kernel.org>, Masaki Ota <masaki.ota@jp.alps.com>
Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
Benjamin Tissoires <benjamin.tissoires@redhat.com>
Subject: [PATCH] HID: alps: allow incoming reports when only the trackstick is opened
Date: Fri, 12 Oct 2018 16:05:25 +0200 [thread overview]
Message-ID: <20181012140525.24799-1-benjamin.tissoires@redhat.com> (raw)
If userspace only reads the trackstick node, and no one is listening to
the touchpad nor the hidraw node then, the device is not powered on.
Add open/close callbacks to allow users to disable the touchpad in Gnome
while keeping the trackstick active.
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1559632
Link: https://gitlab.gnome.org/GNOME/mutter/issues/128
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
---
drivers/hid/hid-alps.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/drivers/hid/hid-alps.c b/drivers/hid/hid-alps.c
index aec253b44156..3cd7229b6e54 100644
--- a/drivers/hid/hid-alps.c
+++ b/drivers/hid/hid-alps.c
@@ -660,6 +660,20 @@ static int T4_init(struct hid_device *hdev, struct alps_dev *pri_data)
return ret;
}
+static int alps_sp_open(struct input_dev *dev)
+{
+ struct hid_device *hid = input_get_drvdata(dev);
+
+ return hid_hw_open(hid);
+}
+
+static void alps_sp_close(struct input_dev *dev)
+{
+ struct hid_device *hid = input_get_drvdata(dev);
+
+ hid_hw_close(hid);
+}
+
static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
{
struct alps_dev *data = hid_get_drvdata(hdev);
@@ -733,6 +747,10 @@ static int alps_input_configured(struct hid_device *hdev, struct hid_input *hi)
input2->id.version = input->id.version;
input2->dev.parent = input->dev.parent;
+ input_set_drvdata(input2, hdev);
+ input2->open = alps_sp_open;
+ input2->close = alps_sp_close;
+
__set_bit(EV_KEY, input2->evbit);
data->sp_btn_cnt = (data->sp_btn_info & 0x0F);
for (i = 0; i < data->sp_btn_cnt; i++)
--
2.14.3
next reply other threads:[~2018-10-12 14:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-12 14:05 Benjamin Tissoires [this message]
2018-10-26 15:27 ` [PATCH] HID: alps: allow incoming reports when only the trackstick is opened Jiri Kosina
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