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authorDavid Herrmann <dh.herrmann@googlemail.com>2011-07-05 13:45:11 +0200
committerJiri Kosina <jkosina@suse.cz>2011-07-11 14:30:22 +0200
commit672bc4e090c9a2c655c28f8295e981609a1b84ba (patch)
tree6582fd4c00b899b4fffeee4007912aa43b69543a /drivers/hid
parente894d0e3e06650510c70e50b317dfaba5295f4db (diff)
downloadop-kernel-dev-672bc4e090c9a2c655c28f8295e981609a1b84ba.zip
op-kernel-dev-672bc4e090c9a2c655c28f8295e981609a1b84ba.tar.gz
HID: wiimote: Register input device in wiimote hid driver
Register input device so the wiimote can report input events on it. We do not use HIDINPUT because the wiimote does not provide any descriptor table which might be used by HIDINPUT. So we avoid having HIDINPUT parse the wiimote descriptor and create unrelated or unknown event flags. Instead we register our own input device that we have full control of. Signed-off-by: David Herrmann <dh.herrmann@googlemail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-wiimote.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/hid/hid-wiimote.c b/drivers/hid/hid-wiimote.c
index ff7cf12..deaf232 100644
--- a/drivers/hid/hid-wiimote.c
+++ b/drivers/hid/hid-wiimote.c
@@ -10,7 +10,9 @@
* any later version.
*/
+#include <linux/device.h>
#include <linux/hid.h>
+#include <linux/input.h>
#include <linux/module.h>
#include "hid-ids.h"
@@ -19,8 +21,15 @@
struct wiimote_data {
struct hid_device *hdev;
+ struct input_dev *input;
};
+static int wiimote_input_event(struct input_dev *dev, unsigned int type,
+ unsigned int code, int value)
+{
+ return 0;
+}
+
static int wiimote_hid_event(struct hid_device *hdev, struct hid_report *report,
u8 *raw_data, int size)
{
@@ -38,9 +47,24 @@ static struct wiimote_data *wiimote_create(struct hid_device *hdev)
if (!wdata)
return NULL;
+ wdata->input = input_allocate_device();
+ if (!wdata->input) {
+ kfree(wdata);
+ return NULL;
+ }
+
wdata->hdev = hdev;
hid_set_drvdata(hdev, wdata);
+ input_set_drvdata(wdata->input, wdata);
+ wdata->input->event = wiimote_input_event;
+ wdata->input->dev.parent = &wdata->hdev->dev;
+ wdata->input->id.bustype = wdata->hdev->bus;
+ wdata->input->id.vendor = wdata->hdev->vendor;
+ wdata->input->id.product = wdata->hdev->product;
+ wdata->input->id.version = wdata->hdev->version;
+ wdata->input->name = WIIMOTE_NAME;
+
return wdata;
}
@@ -73,10 +97,19 @@ static int wiimote_hid_probe(struct hid_device *hdev,
goto err;
}
+ ret = input_register_device(wdata->input);
+ if (ret) {
+ hid_err(hdev, "Cannot register input device\n");
+ goto err_stop;
+ }
+
hid_info(hdev, "New device registered\n");
return 0;
+err_stop:
+ hid_hw_stop(hdev);
err:
+ input_free_device(wdata->input);
wiimote_destroy(wdata);
return ret;
}
@@ -87,6 +120,7 @@ static void wiimote_hid_remove(struct hid_device *hdev)
hid_info(hdev, "Device removed\n");
hid_hw_stop(hdev);
+ input_unregister_device(wdata->input);
wiimote_destroy(wdata);
}
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