1 // SPDX-License-Identifier: GPL-2.0-or-later
33 /* Delay after which claim the next frame. If the delay is too small,
57 	memcpy(gspca_dev->usb_buf, order_values[order], 12);  in command()
58 	return usb_control_msg(gspca_dev->dev,  in command()
59 			usb_sndctrlpipe(gspca_dev->dev, 0),  in command()
62 			USB_RECIP_INTERFACE, 0, 0, gspca_dev->usb_buf,  in command()
70  * threads attempting to use gspca_dev->usb_buf we take the usb_lock when
77 	struct gspca_dev *gspca_dev = &dev->gspca_dev;  in dostream()
78 	struct urb *urb = gspca_dev->urb[0];  in dostream()
79 	u8 *data = urb->transfer_buffer;  in dostream()
87 	while (gspca_dev->present && gspca_dev->streaming) {  in dostream()
89 		if (gspca_dev->frozen)  in dostream()
94 		mutex_lock(&gspca_dev->usb_lock);  in dostream()
96 		mutex_unlock(&gspca_dev->usb_lock);  in dostream()
97 		if (ret < 0)  in dostream()
100 		if (gspca_dev->frozen)  in dostream()
103 		if (!gspca_dev->present || !gspca_dev->streaming)  in dostream()
108 			ret = usb_bulk_msg(gspca_dev->dev,  in dostream()
109 					urb->pipe,  in dostream()
113 			if (ret < 0) {  in dostream()
119 			if (gspca_dev->frozen)  in dostream()
122 			if (!gspca_dev->present || !gspca_dev->streaming)  in dostream()
124 			if (len < FPIX_MAX_TRANSFER ||  in dostream()
125 				(data[len - 2] == 0xff &&  in dostream()
126 					data[len - 1] == 0xd9)) {  in dostream()
128 				/* If the result is less than what was asked  in dostream()
132 				 * here if the jpeg ends right at the end  in dostream()
141 					gspca_dev->last_packet_type  in dostream()
148 		 * frame. If we don't, or if the delay is too short,  in dostream()
162 	struct cam *cam = &gspca_dev->cam;  in sd_config()  local
164 	cam->cam_mode = fpix_mode;  in sd_config()
165 	cam->nmodes = 1;  in sd_config()
166 	cam->bulk = 1;  in sd_config()
167 	cam->bulk_size = FPIX_MAX_TRANSFER;  in sd_config()
169 	INIT_WORK(&dev->work_struct, dostream);  in sd_config()
188 	if (ret < 0) {  in sd_start()
195 	ret = usb_bulk_msg(gspca_dev->dev,  in sd_start()
196 			gspca_dev->urb[0]->pipe,  in sd_start()
197 			gspca_dev->urb[0]->transfer_buffer,  in sd_start()
200 	if (ret < 0) {  in sd_start()
207 	if (ret < 0) {  in sd_start()
213 	usb_clear_halt(gspca_dev->dev, gspca_dev->urb[0]->pipe);  in sd_start()
215 	schedule_work(&dev->work_struct);  in sd_start()
221 /* the usb_lock is held at entry - restore on exit */
227 	mutex_unlock(&gspca_dev->usb_lock);  in sd_stop0()
228 	flush_work(&dev->work_struct);  in sd_stop0()
229 	mutex_lock(&gspca_dev->usb_lock);  in sd_stop0()
262 /* sub-driver description */
271 /* -- device connect -- */