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| author | Henrik Rydberg <rydberg@euromail.se> | 2012-07-30 13:28:18 +0200 |
|---|---|---|
| committer | Henrik Rydberg <rydberg@euromail.se> | 2012-09-19 19:50:20 +0200 |
| commit | 9ebf3d7687192923e3d44fdbcd8d9f8375053fb8 (patch) | |
| tree | 6973ce11e93dc97c3d5766bbc8f8b45814c0688e | |
| parent | 22739293402966db7ca3eb0148632d986fe30465 (diff) | |
| download | kernel-common-9ebf3d7687192923e3d44fdbcd8d9f8375053fb8.tar.gz kernel-common-9ebf3d7687192923e3d44fdbcd8d9f8375053fb8.tar.bz2 kernel-common-9ebf3d7687192923e3d44fdbcd8d9f8375053fb8.zip | |
HID: Add an input configured notification callback
A hid device may create several input devices, and a driver may need
to prepare or finalize the configuration per input device. Currently,
there is no sane way for a driver to know when a device has been
configured. This patch adds a callback providing that information.
Reviewed-and-tested-by: Benjamin Tissoires <benjamin.tissoires@enac.fr>
Tested-by: Ping Cheng <pingc@wacom.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
| -rw-r--r-- | drivers/hid/hid-input.c | 11 | ||||
| -rw-r--r-- | include/linux/hid.h | 3 |
2 files changed, 12 insertions, 2 deletions
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 811bfad64609..d917c0d53685 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -1154,6 +1154,7 @@ static void report_features(struct hid_device *hid) int hidinput_connect(struct hid_device *hid, unsigned int force) { + struct hid_driver *drv = hid->driver; struct hid_report *report; struct hid_input *hidinput = NULL; struct input_dev *input_dev; @@ -1228,6 +1229,8 @@ int hidinput_connect(struct hid_device *hid, unsigned int force) * UGCI) cram a lot of unrelated inputs into the * same interface. */ hidinput->report = report; + if (drv->input_configured) + drv->input_configured(hid, hidinput); if (input_register_device(hidinput->input)) goto out_cleanup; hidinput = NULL; @@ -1235,8 +1238,12 @@ int hidinput_connect(struct hid_device *hid, unsigned int force) } } - if (hidinput && input_register_device(hidinput->input)) - goto out_cleanup; + if (hidinput) { + if (drv->input_configured) + drv->input_configured(hid, hidinput); + if (input_register_device(hidinput->input)) + goto out_cleanup; + } return 0; diff --git a/include/linux/hid.h b/include/linux/hid.h index 42970de1b40c..f37da2803005 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -626,6 +626,7 @@ struct hid_usage_id { * @report_fixup: called before report descriptor parsing (NULL means nop) * @input_mapping: invoked on input registering before mapping an usage * @input_mapped: invoked on input registering after mapping an usage + * @input_configured: invoked just before the device is registered * @feature_mapping: invoked on feature registering * @suspend: invoked on suspend (NULL means nop) * @resume: invoked on resume if device was not reset (NULL means nop) @@ -670,6 +671,8 @@ struct hid_driver { int (*input_mapped)(struct hid_device *hdev, struct hid_input *hidinput, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max); + void (*input_configured)(struct hid_device *hdev, + struct hid_input *hidinput); void (*feature_mapping)(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage); |