1 // SPDX-License-Identifier: GPL-2.0-or-later
34 #define SQ905C_MAX_TRANSFER 0x8000
36 #define FRAME_HEADER_LEN 0x50
39 #define SQ905C_CLEAR   0xa0		/* clear everything */
40 #define SQ905C_GET_ID  0x14f4		/* Read version number */
41 #define SQ905C_CAPTURE_LOW 0xa040	/* Starts capture at 160x120 */
42 #define SQ905C_CAPTURE_MED 0x1440	/* Starts capture at 320x240 */
43 #define SQ905C_CAPTURE_HI 0x2840	/* Starts capture at 320x240 */
46 #define SQ905C_CAPTURE_INDEX 0x110f
60  * The 0x2770:0x9050 cameras have max resolution of 320x240.
67 		.priv = 0},
72 		.priv = 0}
80 	ret = usb_control_msg(gspca_dev->dev,  in sq905c_command()
81 			      usb_sndctrlpipe(gspca_dev->dev, 0),  in sq905c_command()
84 			      command, index, NULL, 0,  in sq905c_command()
86 	if (ret < 0) {  in sq905c_command()
91 	return 0;  in sq905c_command()
99 	ret = usb_control_msg(gspca_dev->dev,  in sq905c_read()
100 			      usb_rcvctrlpipe(gspca_dev->dev, 0),  in sq905c_read()
103 			      command, index, gspca_dev->usb_buf, size,  in sq905c_read()
105 	if (ret < 0) {  in sq905c_read()
110 	return 0;  in sq905c_read()
117  * threads attempting to use gspca_dev->usb_buf we take the usb_lock when
124 	struct gspca_dev *gspca_dev = &dev->gspca_dev;  in sq905c_dostream()
138 	while (gspca_dev->present && gspca_dev->streaming) {  in sq905c_dostream()
140 		if (gspca_dev->frozen)  in sq905c_dostream()
144 		ret = usb_bulk_msg(gspca_dev->dev,  in sq905c_dostream()
145 				usb_rcvbulkpipe(gspca_dev->dev, 0x81),  in sq905c_dostream()
151 		if (ret < 0 || act_len < FRAME_HEADER_LEN)  in sq905c_dostream()
153 		/* size is read from 4 bytes starting 0x40, little endian */  in sq905c_dostream()
154 		bytes_left = buffer[0x40]|(buffer[0x41]<<8)|(buffer[0x42]<<16)  in sq905c_dostream()
155 					|(buffer[0x43]<<24);  in sq905c_dostream()
156 		gspca_dbg(gspca_dev, D_STREAM, "bytes_left = 0x%x\n",  in sq905c_dostream()
162 		while (bytes_left > 0 && gspca_dev->present) {  in sq905c_dostream()
165 			ret = usb_bulk_msg(gspca_dev->dev,  in sq905c_dostream()
166 				usb_rcvbulkpipe(gspca_dev->dev, 0x81),  in sq905c_dostream()
169 			if (ret < 0 || act_len < data_len)  in sq905c_dostream()
174 			bytes_left -= data_len;  in sq905c_dostream()
175 			if (bytes_left == 0)  in sq905c_dostream()
184 	if (gspca_dev->present) {  in sq905c_dostream()
185 		mutex_lock(&gspca_dev->usb_lock);  in sq905c_dostream()
186 		sq905c_command(gspca_dev, SQ905C_CLEAR, 0);  in sq905c_dostream()
187 		mutex_unlock(&gspca_dev->usb_lock);  in sq905c_dostream()
196 	struct cam *cam = &gspca_dev->cam;  in sd_config()  local
201 		  "SQ9050 camera detected (vid/pid 0x%04X:0x%04X)\n",  in sd_config()
202 		  id->idVendor, id->idProduct);  in sd_config()
204 	ret = sq905c_command(gspca_dev, SQ905C_GET_ID, 0);  in sd_config()
205 	if (ret < 0) {  in sd_config()
210 	ret = sq905c_read(gspca_dev, 0xf5, 0, 20);  in sd_config()
211 	if (ret < 0) {  in sd_config()
217 		  "SQ9050 ID string: %02x - %*ph\n",  in sd_config()
218 		  gspca_dev->usb_buf[3], 6, gspca_dev->usb_buf + 14);  in sd_config()
220 	cam->cam_mode = sq905c_mode;  in sd_config()
221 	cam->nmodes = 2;  in sd_config()
222 	if (gspca_dev->usb_buf[15] == 0)  in sd_config()
223 		cam->nmodes = 1;  in sd_config()
225 	cam->bulk_size = 32;  in sd_config()
226 	cam->bulk = 1;  in sd_config()
227 	INIT_WORK(&dev->work_struct, sq905c_dostream);  in sd_config()
228 	return 0;  in sd_config()
231 /* called on streamoff with alt==0 and on disconnect */
232 /* the usb_lock is held at entry - restore on exit */
238 	mutex_unlock(&gspca_dev->usb_lock);  in sd_stop0()
240 	destroy_workqueue(dev->work_thread);  in sd_stop0()
241 	dev->work_thread = NULL;  in sd_stop0()
242 	mutex_lock(&gspca_dev->usb_lock);  in sd_stop0()
249 	return sq905c_command(gspca_dev, SQ905C_CLEAR, 0);  in sd_init()
258 	dev->cap_mode = gspca_dev->cam.cam_mode;  in sd_start()
260 	switch (gspca_dev->pixfmt.width) {  in sd_start()
263 		dev->cap_mode++;  in sd_start()
273 	if (ret < 0) {  in sd_start()
278 	dev->work_thread = create_singlethread_workqueue(MODULE_NAME);  in sd_start()
279 	if (!dev->work_thread)  in sd_start()
280 		return -ENOMEM;  in sd_start()
282 	queue_work(dev->work_thread, &dev->work_struct);  in sd_start()
284 	return 0;  in sd_start()
289 	{USB_DEVICE(0x2770, 0x905c)},
290 	{USB_DEVICE(0x2770, 0x9050)},
291 	{USB_DEVICE(0x2770, 0x9051)},
292 	{USB_DEVICE(0x2770, 0x9052)},
293 	{USB_DEVICE(0x2770, 0x913d)},
299 /* sub-driver description */
308 /* -- device connect -- */