24 static int surface_hid_load_hid_descriptor(struct surface_hid_device *shid)  in surface_hid_load_hid_descriptor()  argument
28 	status = shid->ops.get_descriptor(shid, SURFACE_HID_DESC_HID,  in surface_hid_load_hid_descriptor()
29 			(u8 *)&shid->hid_desc, sizeof(shid->hid_desc));  in surface_hid_load_hid_descriptor()
33 	if (shid->hid_desc.desc_len != sizeof(shid->hid_desc)) {  in surface_hid_load_hid_descriptor()
34 		dev_err(shid->dev, "unexpected HID descriptor length: got %u, expected %zu\n",  in surface_hid_load_hid_descriptor()
35 			shid->hid_desc.desc_len, sizeof(shid->hid_desc));  in surface_hid_load_hid_descriptor()
39 	if (shid->hid_desc.desc_type != HID_DT_HID) {  in surface_hid_load_hid_descriptor()
40 		dev_err(shid->dev, "unexpected HID descriptor type: got %#04x, expected %#04x\n",  in surface_hid_load_hid_descriptor()
41 			shid->hid_desc.desc_type, HID_DT_HID);  in surface_hid_load_hid_descriptor()
45 	if (shid->hid_desc.num_descriptors != 1) {  in surface_hid_load_hid_descriptor()
46 		dev_err(shid->dev, "unexpected number of descriptors: got %u, expected 1\n",  in surface_hid_load_hid_descriptor()
47 			shid->hid_desc.num_descriptors);  in surface_hid_load_hid_descriptor()
51 	if (shid->hid_desc.report_desc_type != HID_DT_REPORT) {  in surface_hid_load_hid_descriptor()
52 		dev_err(shid->dev, "unexpected report descriptor type: got %#04x, expected %#04x\n",  in surface_hid_load_hid_descriptor()
53 			shid->hid_desc.report_desc_type, HID_DT_REPORT);  in surface_hid_load_hid_descriptor()
60 static int surface_hid_load_device_attributes(struct surface_hid_device *shid)  in surface_hid_load_device_attributes()  argument
64 	status = shid->ops.get_descriptor(shid, SURFACE_HID_DESC_ATTRS,  in surface_hid_load_device_attributes()
65 			(u8 *)&shid->attrs, sizeof(shid->attrs));  in surface_hid_load_device_attributes()
69 	if (get_unaligned_le32(&shid->attrs.length) != sizeof(shid->attrs)) {  in surface_hid_load_device_attributes()
70 		dev_err(shid->dev, "unexpected attribute length: got %u, expected %zu\n",  in surface_hid_load_device_attributes()
71 			get_unaligned_le32(&shid->attrs.length), sizeof(shid->attrs));  in surface_hid_load_device_attributes()
83 	struct surface_hid_device *shid = hid->driver_data;  in surface_hid_start()  local
85 	return ssam_notifier_register(shid->ctrl, &shid->notif);  in surface_hid_start()
90 	struct surface_hid_device *shid = hid->driver_data;  in surface_hid_stop()  local
93 	ssam_notifier_unregister(shid->ctrl, &shid->notif);  in surface_hid_stop()
107 	struct surface_hid_device *shid = hid->driver_data;  in surface_hid_parse()  local
108 	size_t len = get_unaligned_le16(&shid->hid_desc.report_desc_len);  in surface_hid_parse()
116 	status = shid->ops.get_descriptor(shid, SURFACE_HID_DESC_REPORT, buf, len);  in surface_hid_parse()
127 	struct surface_hid_device *shid = hid->driver_data;  in surface_hid_raw_request()  local
130 		return shid->ops.output_report(shid, reportnum, buf, len);  in surface_hid_raw_request()
133 		return shid->ops.get_feature_report(shid, reportnum, buf, len);  in surface_hid_raw_request()
136 		return shid->ops.set_feature_report(shid, reportnum, buf, len);  in surface_hid_raw_request()
153 int surface_hid_device_add(struct surface_hid_device *shid)  in surface_hid_device_add()  argument
157 	status = surface_hid_load_hid_descriptor(shid);  in surface_hid_device_add()
161 	status = surface_hid_load_device_attributes(shid);  in surface_hid_device_add()
165 	shid->hid = hid_allocate_device();  in surface_hid_device_add()
166 	if (IS_ERR(shid->hid))  in surface_hid_device_add()
167 		return PTR_ERR(shid->hid);  in surface_hid_device_add()
169 	shid->hid->dev.parent = shid->dev;  in surface_hid_device_add()
170 	shid->hid->bus = BUS_HOST;  in surface_hid_device_add()
171 	shid->hid->vendor = get_unaligned_le16(&shid->attrs.vendor);  in surface_hid_device_add()
172 	shid->hid->product = get_unaligned_le16(&shid->attrs.product);  in surface_hid_device_add()
173 	shid->hid->version = get_unaligned_le16(&shid->hid_desc.hid_version);  in surface_hid_device_add()
174 	shid->hid->country = shid->hid_desc.country_code;  in surface_hid_device_add()
176 	snprintf(shid->hid->name, sizeof(shid->hid->name), "Microsoft Surface %04X:%04X",  in surface_hid_device_add()
177 		 shid->hid->vendor, shid->hid->product);  in surface_hid_device_add()
179 	strscpy(shid->hid->phys, dev_name(shid->dev), sizeof(shid->hid->phys));  in surface_hid_device_add()
181 	shid->hid->driver_data = shid;  in surface_hid_device_add()
182 	shid->hid->ll_driver = &surface_hid_ll_driver;  in surface_hid_device_add()
184 	status = hid_add_device(shid->hid);  in surface_hid_device_add()
186 		hid_destroy_device(shid->hid);  in surface_hid_device_add()
192 void surface_hid_device_destroy(struct surface_hid_device *shid)  in surface_hid_device_destroy()  argument
194 	hid_destroy_device(shid->hid);  in surface_hid_device_destroy()