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Commit 6d85d037 authored by Benjamin Tissoires's avatar Benjamin Tissoires Committed by Jiri Kosina
Browse files

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: default avatarBenjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent cf5425bf

drivers/hid/hid-core.c

+4 −0
Original line number Diff line number Diff line
@@ -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)

include/linux/hid.h

+2 −0
Original line number Diff line number Diff line
@@ -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);