HID: core: add "report" hook, called once the report has been parsed

This callback is called when the parsing of the report has been done
by hid-core (so after the calls to .event). The hid drivers can now
have access to the whole report by relying on the values stored in
the different fields.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index eb2ee11..754098a 100644 (file)
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1195,6 +1195,7 @@ int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
 {
        struct hid_report_enum *report_enum = hid->report_enum + type;
        struct hid_report *report;
+       struct hid_driver *hdrv;
        unsigned int a;
        int rsize, csize = size;
        u8 *cdata = data;
@@ -1231,6 +1232,9 @@ int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
        if (hid->claimed != HID_CLAIMED_HIDRAW) {
                for (a = 0; a < report->maxfield; a++)
                        hid_input_field(hid, report->field[a], cdata, interrupt);
+               hdrv = hid->driver;
+               if (hdrv && hdrv->report)
+                       hdrv->report(hid, report);
        }
 
        if (hid->claimed & HID_CLAIMED_INPUT)

diff --git a/include/linux/hid.h b/include/linux/hid.h
index 7330a0f..9f56e90 100644 (file)
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -589,6 +589,7 @@ struct hid_usage_id {
  * @raw_event: if report in report_table, this hook is called (NULL means nop)
  * @usage_table: on which events to call event (NULL means all)
  * @event: if usage in usage_table, this hook is called (NULL means nop)
+ * @report: this hook is called after parsing a report (NULL means nop)
  * @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
@@ -627,6 +628,7 @@ struct hid_driver {
        const struct hid_usage_id *usage_table;
        int (*event)(struct hid_device *hdev, struct hid_field *field,
                        struct hid_usage *usage, __s32 value);
+       void (*report)(struct hid_device *hdev, struct hid_report *report);
 
        __u8 *(*report_fixup)(struct hid_device *hdev, __u8 *buf,
                        unsigned int *size);