staging/greybus/hid.c

10 #include <linux/hid.h>
22 	struct hid_device		*hid;
146 		hid_input_report(ghid->hid, HID_INPUT_REPORT,
158 static void gb_hid_find_max_report(struct hid_device *hid, unsigned int type,
164 	list_for_each_entry(report, &hid->report_enum[type].report_list, list) {
200 	 * hid->driver_lock is held as we are in probe function,
204 	hid_report_raw_event(ghid->hid, report->type, ghid->inbuf, size, 1);
209 	struct hid_device *hid = ghid->hid;
213 			    &hid->report_enum[HID_INPUT_REPORT].report_list,
218 			    &hid->report_enum[HID_FEATURE_REPORT].report_list,
223 static int __gb_hid_get_raw_report(struct hid_device *hid,
227 	struct gb_hid *ghid = hid->driver_data;
240 static int __gb_hid_output_raw_report(struct hid_device *hid, __u8 *buf,
243 	struct gb_hid *ghid = hid->driver_data;
262 static int gb_hid_raw_request(struct hid_device *hid, unsigned char reportnum,
268 		return __gb_hid_get_raw_report(hid, reportnum, buf, len, rtype);
272 		return __gb_hid_output_raw_report(hid, buf, len, rtype);
279 static int gb_hid_parse(struct hid_device *hid)
281 	struct gb_hid *ghid = hid->driver_data;
298 		hid_err(hid, "reading report descriptor failed\n");
302 	ret = hid_parse_report(hid, rdesc, rsize);
312 static int gb_hid_start(struct hid_device *hid)
314 	struct gb_hid *ghid = hid->driver_data;
318 	gb_hid_find_max_report(hid, HID_INPUT_REPORT, &bufsize);
319 	gb_hid_find_max_report(hid, HID_OUTPUT_REPORT, &bufsize);
320 	gb_hid_find_max_report(hid, HID_FEATURE_REPORT, &bufsize);
329 	if (!(hid->quirks & HID_QUIRK_NO_INIT_REPORTS))
335 static void gb_hid_stop(struct hid_device *hid)
337 	struct gb_hid *ghid = hid->driver_data;
342 static int gb_hid_open(struct hid_device *hid)
344 	struct gb_hid *ghid = hid->driver_data;
355 static void gb_hid_close(struct hid_device *hid)
357 	struct gb_hid *ghid = hid->driver_data;
369 static int gb_hid_power(struct hid_device *hid, int lvl)
371 	struct gb_hid *ghid = hid->driver_data;
396 	struct hid_device *hid = ghid->hid;
403 	hid->version = le16_to_cpu(ghid->hdesc.bcdHID);
404 	hid->vendor = le16_to_cpu(ghid->hdesc.wVendorID);
405 	hid->product = le16_to_cpu(ghid->hdesc.wProductID);
406 	hid->country = ghid->hdesc.bCountryCode;
408 	hid->driver_data = ghid;
409 	hid->ll_driver = &gb_hid_ll_driver;
410 	hid->dev.parent = &ghid->connection->bundle->dev;
411 //	hid->bus = BUS_GREYBUS; /* Need a bustype for GREYBUS in <linux/input.h> */
414 	snprintf(hid->name, sizeof(hid->name), "%s %04X:%04X",
416 		 hid->vendor, hid->product);
426 	struct hid_device *hid;
451 	hid = hid_allocate_device();
452 	if (IS_ERR(hid)) {
453 		ret = PTR_ERR(hid);
457 	ghid->hid = hid;
470 	ret = hid_add_device(hid);
472 		hid_err(hid, "can't add hid device: %d\n", ret);
483 	hid_destroy_device(hid);
499 	hid_destroy_device(ghid->hid);
512 	.name		= "hid",