1 // SPDX-License-Identifier: GPL-2.0-or-later
6  * Copyright (C) 2012-2014 John McMaster <JohnDMcMaster@gmail.com>
22  * Exposure reg is linear with exposure time
23  * Exposure (sec), E (reg)
69  * Essentially gains are in range 0-0x001FF
101 /* MT9E001 reg names to give a rough approximation */
151 /* Used to simplify reg write error handling */
190 		return -EIO;  in val_reply()
194 		return -EIO;  in val_reply()
198 		return -EIO;  in val_reply()
205 	char *buff = gspca_dev->usb_buf;  in reg_w()
211 	rc = usb_control_msg(gspca_dev->dev, usb_rcvctrlpipe(gspca_dev->dev, 0),  in reg_w()
217 		gspca_dev->usb_err = rc;  in reg_w()
223 		gspca_dev->usb_err = -EIO;  in reg_w()
231 		reg_w(gspca_dev, p->value, p->index);  in reg_w_buf()
233 	} while (--l > 0);  in reg_w_buf()
239 	unsigned int w = gspca_dev->pixfmt.width;  in setexposure()
249 		gspca_dev->usb_err = -EINVAL;  in setexposure()
264 	 * 0x080 (128) - 0x0FF (255): regM, regL  in gainify()
265 	 * 0x100 (256) - max: regH, regM, regL  in gainify()
328 	unsigned int w = gspca_dev->pixfmt.width;  in configure_wh()
367 		gspca_dev->usb_err = -EINVAL;  in configure_wh()
374 	reg_w(gspca_dev, gspca_dev->pixfmt.height, REG_Y_OUTPUT_SIZE);  in configure_wh()
387 		gspca_dev->usb_err = -EINVAL;  in configure_wh()
420 		  gspca_dev->pixfmt.width);  in configure_encrypted()
433 	char *buff = gspca_dev->usb_buf;  in configure()
441 	 * -Compute key = this wValue rotate left by 4 bits  in configure()
443 	 * -Later packets encrypt packets by XOR'ing with key  in configure()
450 	rc = usb_control_msg(gspca_dev->dev, usb_rcvctrlpipe(gspca_dev->dev, 0),  in configure()
454 		return -EIO;  in configure()
467 	rc = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0),  in configure()
475 	rc = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0),  in configure()
483 	rc = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0),  in configure()
494 	 * rc = usb_control_msg(gspca_dev->dev,  in configure()
495 	 *			usb_rcvctrlpipe(gspca_dev->dev, 0),  in configure()
500 	gspca_dev->usb_err = 0;  in configure()
502 	if (gspca_dev->usb_err)  in configure()
503 		return gspca_dev->usb_err;  in configure()
506 	rc = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0),  in configure()
521 	gspca_dev->cam.cam_mode = vga_mode;  in sd_config()
522 	gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);  in sd_config()
525 	gspca_dev->cam.no_urb_create = 0;  in sd_config()
526 	gspca_dev->cam.bulk_nurbs = 4;  in sd_config()
528 	gspca_dev->cam.bulk_size = BULK_SIZE;  in sd_config()
530 	gspca_dev->cam.bulk = 1;  in sd_config()
540 	sd->this_f = 0;  in sd_start()
560 		if (sd->this_f + len == gspca_dev->pixfmt.sizeimage) {  in sd_pkt_scan()
563 				  sd->this_f, gspca_dev->pixfmt.sizeimage, len);  in sd_pkt_scan()
568 				  sd->this_f, gspca_dev->pixfmt.sizeimage, len);  in sd_pkt_scan()
570 		sd->this_f = 0;  in sd_pkt_scan()
572 		if (sd->this_f == 0)  in sd_pkt_scan()
576 		sd->this_f += len;  in sd_pkt_scan()
588 		container_of(ctrl->handler, struct gspca_dev, ctrl_handler);  in sd_s_ctrl()
591 	gspca_dev->usb_err = 0;  in sd_s_ctrl()
593 	if (!gspca_dev->streaming)  in sd_s_ctrl()
596 	switch (ctrl->id) {  in sd_s_ctrl()
598 		setexposure(gspca_dev, ctrl->val);  in sd_s_ctrl()
601 		/* gspca_dev->gain automatically updated */  in sd_s_ctrl()
602 		setggain(gspca_dev, gspca_dev->gain->val);  in sd_s_ctrl()
605 		sd->blue->val = ctrl->val;  in sd_s_ctrl()
606 		setbgain(gspca_dev, sd->blue->val, gspca_dev->gain->val);  in sd_s_ctrl()
609 		sd->red->val = ctrl->val;  in sd_s_ctrl()
610 		setrgain(gspca_dev, sd->red->val, gspca_dev->gain->val);  in sd_s_ctrl()
613 	return gspca_dev->usb_err;  in sd_s_ctrl()
623 	struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;  in sd_init_controls()
625 	gspca_dev->vdev.ctrl_handler = hdl;  in sd_init_controls()
628 	gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,  in sd_init_controls()
632 	gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,  in sd_init_controls()
634 	sd->blue = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,  in sd_init_controls()
636 	sd->red = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,  in sd_init_controls()
639 	if (hdl->error) {  in sd_init_controls()
641 		return hdl->error;  in sd_init_controls()
646 /* sub-driver description */