1 // SPDX-License-Identifier: GPL-2.0-or-later
9  * Strongly based on qc-usb-messenger, which is:
10  * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
11  *		      Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
57 		container_of(ctrl->handler, struct gspca_dev, ctrl_handler);  in st6422_s_ctrl()
59 	int err = -EINVAL;  in st6422_s_ctrl()
61 	switch (ctrl->id) {  in st6422_s_ctrl()
63 		err = setbrightness(sd, ctrl->val);  in st6422_s_ctrl()
66 		err = setcontrast(sd, ctrl->val);  in st6422_s_ctrl()
69 		err = setgain(sd, ctrl->val);  in st6422_s_ctrl()
72 		err = setexposure(sd, ctrl->val);  in st6422_s_ctrl()
77 	if (err >= 0)  in st6422_s_ctrl()
79 	sd->gspca_dev.usb_err = err;  in st6422_s_ctrl()
89 	struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;  in st6422_init_controls()
101 	return hdl->error;  in st6422_init_controls()
106 	if (sd->bridge != BRIDGE_ST6422)  in st6422_probe()
107 		return -ENODEV;  in st6422_probe()
111 	sd->gspca_dev.cam.cam_mode = st6422_mode;  in st6422_probe()
112 	sd->gspca_dev.cam.nmodes = ARRAY_SIZE(st6422_mode);  in st6422_probe()
123 		{ 0x1432, 0x03 },	/* 0x00-0x1F brightness */  in st6422_init()
124 		{ 0x143a, 0xf9 },	/* 0x00-0x0F contrast */  in st6422_init()
132 		{ 0x1431, 0x00 },	/* 0x00-0x07 ??? */  in st6422_init()
133 		{ 0x1433, 0x34 },	/* 160x120, 0x00-0x01 night filter */  in st6422_init()
139 /* anti-noise?  0xa2 gives a perfect image */  in st6422_init()
142 		{ 0x143c, 0x00 },	/* 0x00-0x01 - ??? */  in st6422_init()
145 /* shutter time 0x0000-0x03FF */  in st6422_init()
154 /*        bit 5 == button pressed and hold if 0 */  in st6422_init()
162 /* if(urb->iso_frame_desc[i].status == 0x80) { */  in st6422_init()
163 /* if(urb->iso_frame_desc[i].status == 0x88) { */  in st6422_init()
167 		{ 0x1500, 0x50 },	/* 0x00 - 0xFF  0x80 == compr ? */  in st6422_init()
170 /* high val-> light area gets darker */  in st6422_init()
171 /* low val -> light area gets lighter */  in st6422_init()
173 /* high val-> light area gets darker */  in st6422_init()
174 /* low val -> light area gets lighter */  in st6422_init()
176 /* high val-> light area gets darker */  in st6422_init()
177 /* low val -> light area gets lighter */  in st6422_init()
203 	/* val goes from 0 -> 31 */  in setbrightness()
209 	/* Val goes from 0 -> 15 */  in setcontrast()
219 	if (err < 0)  in setgain()
223 	if (err < 0)  in setgain()
227 	if (err < 0)  in setgain()
232 	if (err < 0)  in setgain()
243 	if (err < 0)  in setexposure()
252 	struct cam *cam = &sd->gspca_dev.cam;  in st6422_start()  local
254 	if (cam->cam_mode[sd->gspca_dev.curr_mode].priv)  in st6422_start()
258 	if (err < 0)  in st6422_start()