3  * Common/core components for the Surface System Aggregator Module (SSAM) HID
4  * transport driver. Provides support for integrated HID devices on Microsoft
11 #include <linux/hid.h>
52 		dev_err(shid->dev, "unexpected HID descriptor length: got %u, expected %zu\n",  in surface_hid_load_hid_descriptor()
58 		dev_err(shid->dev, "unexpected HID descriptor type: got %#04x, expected %#04x\n",  in surface_hid_load_hid_descriptor()
102 static int surface_hid_start(struct hid_device *hid)  in surface_hid_start()  argument
104 	struct surface_hid_device *shid = hid->driver_data;  in surface_hid_start()
109 static void surface_hid_stop(struct hid_device *hid)  in surface_hid_stop()  argument
111 	struct surface_hid_device *shid = hid->driver_data;  in surface_hid_stop()
116 	 * also includes unregistration of HID events, so we need to check this  in surface_hid_stop()
126 static int surface_hid_open(struct hid_device *hid)  in surface_hid_open()  argument
131 static void surface_hid_close(struct hid_device *hid)  in surface_hid_close()  argument
135 static int surface_hid_parse(struct hid_device *hid)  in surface_hid_parse()  argument
137 	struct surface_hid_device *shid = hid->driver_data;  in surface_hid_parse()
151 		status = hid_parse_report(hid, buf, len);  in surface_hid_parse()
157 static int surface_hid_raw_request(struct hid_device *hid, unsigned char reportnum, u8 *buf,  in surface_hid_raw_request()  argument
160 	struct surface_hid_device *shid = hid->driver_data;  in surface_hid_raw_request()
201 	shid->hid = hid_allocate_device();  in surface_hid_device_add()
202 	if (IS_ERR(shid->hid))  in surface_hid_device_add()
203 		return PTR_ERR(shid->hid);  in surface_hid_device_add()
205 	shid->hid->dev.parent = shid->dev;  in surface_hid_device_add()
206 	shid->hid->bus = BUS_HOST;  in surface_hid_device_add()
207 	shid->hid->vendor = get_unaligned_le16(&shid->attrs.vendor);  in surface_hid_device_add()
208 	shid->hid->product = get_unaligned_le16(&shid->attrs.product);  in surface_hid_device_add()
209 	shid->hid->version = get_unaligned_le16(&shid->hid_desc.hid_version);  in surface_hid_device_add()
210 	shid->hid->country = shid->hid_desc.country_code;  in surface_hid_device_add()
212 	snprintf(shid->hid->name, sizeof(shid->hid->name), "Microsoft Surface %04X:%04X",  in surface_hid_device_add()
213 		 shid->hid->vendor, shid->hid->product);  in surface_hid_device_add()
215 	strscpy(shid->hid->phys, dev_name(shid->dev), sizeof(shid->hid->phys));  in surface_hid_device_add()
217 	shid->hid->driver_data = shid;  in surface_hid_device_add()
218 	shid->hid->ll_driver = &surface_hid_ll_driver;  in surface_hid_device_add()
220 	status = hid_add_device(shid->hid);  in surface_hid_device_add()
222 		hid_destroy_device(shid->hid);  in surface_hid_device_add()
230 	hid_destroy_device(shid->hid);  in surface_hid_device_destroy()
243 	return hid_driver_suspend(d->hid, PMSG_SUSPEND);  in surface_hid_suspend()
250 	return hid_driver_resume(d->hid);  in surface_hid_resume()
257 	return hid_driver_suspend(d->hid, PMSG_FREEZE);  in surface_hid_freeze()
264 	return hid_driver_suspend(d->hid, PMSG_HIBERNATE);  in surface_hid_poweroff()
271 	return hid_driver_reset_resume(d->hid);  in surface_hid_restore()
292 MODULE_DESCRIPTION("HID transport driver core for Surface System Aggregator Module");