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authorBenjamin Tissoires <benjamin.tissoires@gmail.com>2013-02-25 11:31:50 +0100
committerJiri Kosina <jkosina@suse.cz>2013-02-25 13:26:42 +0100
commit545bef681088cbf49c9c11d63872698b81eac7eb (patch)
tree64a544caaa337f97465dd575fb9ecf86e3748b7e /drivers/hid/i2c-hid
parentb0a7868181be0a28fc35231d7435c1fb360eb675 (diff)
HID: i2c-hid: implement request() callback
This allows HID drivers to also get/set reports through hid_hw_request(). Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/i2c-hid')
-rw-r--r--drivers/hid/i2c-hid/i2c-hid.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
index ec7930217a6d..935f387be95a 100644
--- a/drivers/hid/i2c-hid/i2c-hid.c
+++ b/drivers/hid/i2c-hid/i2c-hid.c
@@ -563,6 +563,37 @@ static int i2c_hid_output_raw_report(struct hid_device *hid, __u8 *buf,
return ret;
}
+static void i2c_hid_request(struct hid_device *hid, struct hid_report *rep,
+ int reqtype)
+{
+ struct i2c_client *client = hid->driver_data;
+ struct i2c_hid *ihid = i2c_get_clientdata(client);
+ char *buf;
+ int ret;
+
+ buf = kzalloc(ihid->bufsize, GFP_KERNEL);
+ if (!buf)
+ return;
+
+ switch (reqtype) {
+ case HID_REQ_GET_REPORT:
+ ret = i2c_hid_get_raw_report(hid, rep->id, buf, ihid->bufsize,
+ rep->type);
+ if (ret < 0)
+ dev_err(&client->dev, "%s: unable to get report: %d\n",
+ __func__, ret);
+ else
+ hid_input_report(hid, rep->type, buf, ret, 0);
+ break;
+ case HID_REQ_SET_REPORT:
+ hid_output_report(rep, buf);
+ i2c_hid_output_raw_report(hid, buf, ihid->bufsize, rep->type);
+ break;
+ }
+
+ kfree(buf);
+}
+
static int i2c_hid_parse(struct hid_device *hid)
{
struct i2c_client *client = hid->driver_data;
@@ -742,6 +773,7 @@ static struct hid_ll_driver i2c_hid_ll_driver = {
.open = i2c_hid_open,
.close = i2c_hid_close,
.power = i2c_hid_power,
+ .request = i2c_hid_request,
.hidinput_input_event = i2c_hid_hidinput_input_event,
};