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Commit 545bef68 authored by Benjamin Tissoires's avatar Benjamin Tissoires Committed by Jiri Kosina
Browse files

HID: i2c-hid: implement request() callback 



This allows HID drivers to also get/set reports through hid_hw_request().

Tested-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: default avatarBenjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent b0a78681

drivers/hid/i2c-hid/i2c-hid.c

+32 −0
Original line number Diff line number Diff line
@@ -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,

};