// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
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* Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
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* Copyright (c) 2002, 2003 Tuukka Toivonen
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* Copyright (c) 2008 Erik Andrén
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*
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* P/N 861037: Sensor HDCS1000 ASIC STV0600
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* P/N 861050-0010: Sensor HDCS1000 ASIC STV0600
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* P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express
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* P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam
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* P/N 861075-0040: Sensor HDCS1000 ASIC
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* P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB
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* P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include "stv06xx_vv6410.h"
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static struct v4l2_pix_format vv6410_mode[] = {
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{
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356,
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292,
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V4L2_PIX_FMT_SGRBG8,
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V4L2_FIELD_NONE,
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.sizeimage = 356 * 292,
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.bytesperline = 356,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.priv = 0
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}
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};
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static int vv6410_s_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct gspca_dev *gspca_dev =
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container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
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int err = -EINVAL;
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switch (ctrl->id) {
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case V4L2_CID_HFLIP:
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if (!gspca_dev->streaming)
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return 0;
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err = vv6410_set_hflip(gspca_dev, ctrl->val);
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break;
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case V4L2_CID_VFLIP:
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if (!gspca_dev->streaming)
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return 0;
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err = vv6410_set_vflip(gspca_dev, ctrl->val);
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break;
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case V4L2_CID_GAIN:
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err = vv6410_set_analog_gain(gspca_dev, ctrl->val);
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break;
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case V4L2_CID_EXPOSURE:
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err = vv6410_set_exposure(gspca_dev, ctrl->val);
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break;
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}
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return err;
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}
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static const struct v4l2_ctrl_ops vv6410_ctrl_ops = {
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.s_ctrl = vv6410_s_ctrl,
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};
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static int vv6410_probe(struct sd *sd)
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{
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u16 data;
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int err;
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err = stv06xx_read_sensor(sd, VV6410_DEVICEH, &data);
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if (err < 0)
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return -ENODEV;
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if (data != 0x19)
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return -ENODEV;
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pr_info("vv6410 sensor detected\n");
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sd->gspca_dev.cam.cam_mode = vv6410_mode;
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sd->gspca_dev.cam.nmodes = ARRAY_SIZE(vv6410_mode);
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return 0;
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}
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static int vv6410_init_controls(struct sd *sd)
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{
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struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;
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v4l2_ctrl_handler_init(hdl, 2);
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/* Disable the hardware VFLIP and HFLIP as we currently lack a
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mechanism to adjust the image offset in such a way that
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we don't need to renegotiate the announced format */
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/* v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops, */
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/* V4L2_CID_HFLIP, 0, 1, 1, 0); */
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/* v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops, */
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/* V4L2_CID_VFLIP, 0, 1, 1, 0); */
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v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops,
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V4L2_CID_EXPOSURE, 0, 32768, 1, 20000);
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v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops,
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V4L2_CID_GAIN, 0, 15, 1, 10);
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return hdl->error;
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}
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static int vv6410_init(struct sd *sd)
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{
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int err = 0, i;
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for (i = 0; i < ARRAY_SIZE(stv_bridge_init); i++)
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stv06xx_write_bridge(sd, stv_bridge_init[i].addr, stv_bridge_init[i].data);
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err = stv06xx_write_sensor_bytes(sd, (u8 *) vv6410_sensor_init,
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ARRAY_SIZE(vv6410_sensor_init));
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return (err < 0) ? err : 0;
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}
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static int vv6410_start(struct sd *sd)
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{
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int err;
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struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
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struct cam *cam = &sd->gspca_dev.cam;
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u32 priv = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
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if (priv & VV6410_SUBSAMPLE) {
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gspca_dbg(gspca_dev, D_CONF, "Enabling subsampling\n");
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stv06xx_write_bridge(sd, STV_Y_CTRL, 0x02);
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stv06xx_write_bridge(sd, STV_X_CTRL, 0x06);
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stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x10);
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} else {
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stv06xx_write_bridge(sd, STV_Y_CTRL, 0x01);
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stv06xx_write_bridge(sd, STV_X_CTRL, 0x0a);
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stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x00);
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}
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/* Turn on LED */
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err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_ON);
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if (err < 0)
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return err;
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err = stv06xx_write_sensor(sd, VV6410_SETUP0, 0);
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if (err < 0)
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return err;
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gspca_dbg(gspca_dev, D_STREAM, "Starting stream\n");
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return 0;
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}
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static int vv6410_stop(struct sd *sd)
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{
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struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
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int err;
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/* Turn off LED */
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err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_OFF);
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if (err < 0)
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return err;
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err = stv06xx_write_sensor(sd, VV6410_SETUP0, VV6410_LOW_POWER_MODE);
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if (err < 0)
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return err;
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gspca_dbg(gspca_dev, D_STREAM, "Halting stream\n");
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return 0;
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}
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static int vv6410_dump(struct sd *sd)
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{
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u8 i;
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int err = 0;
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pr_info("Dumping all vv6410 sensor registers\n");
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for (i = 0; i < 0xff && !err; i++) {
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u16 data;
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err = stv06xx_read_sensor(sd, i, &data);
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pr_info("Register 0x%x contained 0x%x\n", i, data);
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}
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return (err < 0) ? err : 0;
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}
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static int vv6410_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
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{
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int err;
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u16 i2c_data;
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struct sd *sd = (struct sd *) gspca_dev;
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err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);
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if (err < 0)
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return err;
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if (val)
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i2c_data |= VV6410_HFLIP;
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else
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i2c_data &= ~VV6410_HFLIP;
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gspca_dbg(gspca_dev, D_CONF, "Set horizontal flip to %d\n", val);
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err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);
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return (err < 0) ? err : 0;
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}
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static int vv6410_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
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{
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int err;
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u16 i2c_data;
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struct sd *sd = (struct sd *) gspca_dev;
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err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);
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if (err < 0)
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return err;
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if (val)
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i2c_data |= VV6410_VFLIP;
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else
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i2c_data &= ~VV6410_VFLIP;
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gspca_dbg(gspca_dev, D_CONF, "Set vertical flip to %d\n", val);
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err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);
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return (err < 0) ? err : 0;
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}
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static int vv6410_set_analog_gain(struct gspca_dev *gspca_dev, __s32 val)
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{
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int err;
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struct sd *sd = (struct sd *) gspca_dev;
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gspca_dbg(gspca_dev, D_CONF, "Set analog gain to %d\n", val);
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err = stv06xx_write_sensor(sd, VV6410_ANALOGGAIN, 0xf0 | (val & 0xf));
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return (err < 0) ? err : 0;
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}
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static int vv6410_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
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{
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int err;
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struct sd *sd = (struct sd *) gspca_dev;
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unsigned int fine, coarse;
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val = (val * val >> 14) + val / 4;
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fine = val % VV6410_CIF_LINELENGTH;
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coarse = min(512, val / VV6410_CIF_LINELENGTH);
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gspca_dbg(gspca_dev, D_CONF, "Set coarse exposure to %d, fine exposure to %d\n",
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coarse, fine);
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err = stv06xx_write_sensor(sd, VV6410_FINEH, fine >> 8);
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if (err < 0)
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goto out;
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err = stv06xx_write_sensor(sd, VV6410_FINEL, fine & 0xff);
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if (err < 0)
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goto out;
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err = stv06xx_write_sensor(sd, VV6410_COARSEH, coarse >> 8);
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if (err < 0)
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goto out;
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err = stv06xx_write_sensor(sd, VV6410_COARSEL, coarse & 0xff);
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out:
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return err;
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}
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