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[06/12] HID: wiimote: Add wiimote send function

Message ID 1309866319-12899-6-git-send-email-dh.herrmann@googlemail.com (mailing list archive)
State New, archived
Delegated to: Jiri Kosina
Headers show

Commit Message

David Herrmann July 5, 2011, 11:45 a.m. UTC 
The wiimote driver needs to send raw output reports to the wiimote
device. Otherwise we could not manage the peripherals of the wiimote
or perform memory operations on the wiimote.
We cannot use hidinput_input_event of the lowlevel hid driver, since
this does not accept raw input. Therefore, we need to use the same
function that hidraw uses to send output. Side effect is, the raw
output function is not buffered and can sleep.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
---
 drivers/hid/hid-wiimote.c |   19 +++++++++++++++++++
 1 files changed, 19 insertions(+), 0 deletions(-)
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Patch

diff --git a/drivers/hid/hid-wiimote.c b/drivers/hid/hid-wiimote.c
index 3416f69..811ed89 100644
--- a/drivers/hid/hid-wiimote.c
+++ b/drivers/hid/hid-wiimote.c
@@ -26,6 +26,25 @@  struct wiimote_data {
 	struct input_dev *input;
 };
 
+static ssize_t wiimote_hid_send(struct hid_device *hdev, __u8 *buffer,
+								size_t count)
+{
+	__u8 *buf;
+	ssize_t ret;
+
+	if (!hdev->hid_output_raw_report)
+		return -ENODEV;
+
+	buf = kmemdup(buffer, count, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	ret = hdev->hid_output_raw_report(hdev, buf, count, HID_OUTPUT_REPORT);
+
+	kfree(buf);
+	return ret;
+}
+
 static int wiimote_input_event(struct input_dev *dev, unsigned int type,
 						unsigned int code, int value)
 {