3  * User-space I/O driver support for HID subsystem
15 #include <linux/hid.h>
32 	/* This flag tracks whether the HID device is usable for commands from
39 	 * holding @devlock, it's still fine to access @hid.
47 	struct hid_device *hid;  member
73 	ret = hid_add_device(uhid->hid);  in uhid_device_add_worker()
75 		hid_err(uhid->hid, "Cannot register HID device: error %d\n", ret);  in uhid_device_add_worker()
80 		 * of using uhid->hid.  in uhid_device_add_worker()
81 		 * Just leave uhid->hid as-is for now, and clean it up when  in uhid_device_add_worker()
103 		hid_warn(uhid->hid, "Output queue is full\n");  in uhid_queue()
126 static int uhid_hid_start(struct hid_device *hid)  in uhid_hid_start()  argument
128 	struct uhid_device *uhid = hid->driver_data;  in uhid_hid_start()
138 	if (hid->report_enum[HID_FEATURE_REPORT].numbered)  in uhid_hid_start()
140 	if (hid->report_enum[HID_OUTPUT_REPORT].numbered)  in uhid_hid_start()
142 	if (hid->report_enum[HID_INPUT_REPORT].numbered)  in uhid_hid_start()
152 static void uhid_hid_stop(struct hid_device *hid)  in uhid_hid_stop()  argument
154 	struct uhid_device *uhid = hid->driver_data;  in uhid_hid_stop()
156 	hid->claimed = 0;  in uhid_hid_stop()
160 static int uhid_hid_open(struct hid_device *hid)  in uhid_hid_open()  argument
162 	struct uhid_device *uhid = hid->driver_data;  in uhid_hid_open()
167 static void uhid_hid_close(struct hid_device *hid)  in uhid_hid_close()  argument
169 	struct uhid_device *uhid = hid->driver_data;  in uhid_hid_close()
174 static int uhid_hid_parse(struct hid_device *hid)  in uhid_hid_parse()  argument
176 	struct uhid_device *uhid = hid->driver_data;  in uhid_hid_parse()
178 	return hid_parse_report(hid, uhid->rd_data, uhid->rd_size);  in uhid_hid_parse()
232 static int uhid_hid_get_report(struct hid_device *hid, unsigned char rnum,  in uhid_hid_get_report()  argument
235 	struct uhid_device *uhid = hid->driver_data;  in uhid_hid_get_report()
275 static int uhid_hid_set_report(struct hid_device *hid, unsigned char rnum,  in uhid_hid_set_report()  argument
278 	struct uhid_device *uhid = hid->driver_data;  in uhid_hid_set_report()
316 static int uhid_hid_raw_request(struct hid_device *hid, unsigned char reportnum,  in uhid_hid_raw_request()  argument
338 		return uhid_hid_get_report(hid, reportnum, buf, len, u_rtype);  in uhid_hid_raw_request()
340 		return uhid_hid_set_report(hid, reportnum, buf, len, u_rtype);  in uhid_hid_raw_request()
346 static int uhid_hid_output_raw(struct hid_device *hid, __u8 *buf, size_t count,  in uhid_hid_output_raw()  argument
349 	struct uhid_device *uhid = hid->driver_data;  in uhid_hid_output_raw()
384 static int uhid_hid_output_report(struct hid_device *hid, __u8 *buf,  in uhid_hid_output_report()  argument
387 	return uhid_hid_output_raw(hid, buf, count, HID_OUTPUT_REPORT);  in uhid_hid_output_report()
492 	struct hid_device *hid;  in uhid_dev_create2()  local
497 	if (uhid->hid)  in uhid_dev_create2()
511 	hid = hid_allocate_device();  in uhid_dev_create2()
512 	if (IS_ERR(hid)) {  in uhid_dev_create2()
513 		ret = PTR_ERR(hid);  in uhid_dev_create2()
517 	BUILD_BUG_ON(sizeof(hid->name) != sizeof(ev->u.create2.name));  in uhid_dev_create2()
518 	strscpy(hid->name, ev->u.create2.name, sizeof(hid->name));  in uhid_dev_create2()
519 	BUILD_BUG_ON(sizeof(hid->phys) != sizeof(ev->u.create2.phys));  in uhid_dev_create2()
520 	strscpy(hid->phys, ev->u.create2.phys, sizeof(hid->phys));  in uhid_dev_create2()
521 	BUILD_BUG_ON(sizeof(hid->uniq) != sizeof(ev->u.create2.uniq));  in uhid_dev_create2()
522 	strscpy(hid->uniq, ev->u.create2.uniq, sizeof(hid->uniq));  in uhid_dev_create2()
524 	hid->ll_driver = &uhid_hid_driver;  in uhid_dev_create2()
525 	hid->bus = ev->u.create2.bus;  in uhid_dev_create2()
526 	hid->vendor = ev->u.create2.vendor;  in uhid_dev_create2()
527 	hid->product = ev->u.create2.product;  in uhid_dev_create2()
528 	hid->version = ev->u.create2.version;  in uhid_dev_create2()
529 	hid->country = ev->u.create2.country;  in uhid_dev_create2()
530 	hid->driver_data = uhid;  in uhid_dev_create2()
531 	hid->dev.parent = uhid_misc.this_device;  in uhid_dev_create2()
533 	uhid->hid = hid;  in uhid_dev_create2()
536 	/* Adding of a HID device is done through a worker, to allow HID drivers  in uhid_dev_create2()
578 	if (!uhid->hid)  in uhid_dev_destroy()
586 	hid_destroy_device(uhid->hid);  in uhid_dev_destroy()
587 	uhid->hid = NULL;  in uhid_dev_destroy()
598 	hid_input_report(uhid->hid, HID_INPUT_REPORT, ev->u.input.data,  in uhid_dev_input()
609 	hid_input_report(uhid->hid, HID_INPUT_REPORT, ev->u.input2.data,  in uhid_dev_input2()
817 MODULE_DESCRIPTION("User-space I/O driver support for HID subsystem");