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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher4 * Mark Cave-Ayland, Carlo E Prelz, Dick Streefland5 * Copyright (c) 2002, 2003 Tuukka Toivonen6 * Copyright (c) 2008 Erik Andrén7 *8 * P/N 861037: Sensor HDCS1000 ASIC STV06009 * P/N 861050-0010: Sensor HDCS1000 ASIC STV060010 * P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express11 * P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam12 * P/N 861075-0040: Sensor HDCS1000 ASIC13 * P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB14 * P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web15 */16 17#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt18 19#include "stv06xx_vv6410.h"20 21static struct v4l2_pix_format vv6410_mode[] = {22 {23 356,24 292,25 V4L2_PIX_FMT_SGRBG8,26 V4L2_FIELD_NONE,27 .sizeimage = 356 * 292,28 .bytesperline = 356,29 .colorspace = V4L2_COLORSPACE_SRGB,30 .priv = 031 }32};33 34static int vv6410_s_ctrl(struct v4l2_ctrl *ctrl)35{36 struct gspca_dev *gspca_dev =37 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);38 int err = -EINVAL;39 40 switch (ctrl->id) {41 case V4L2_CID_HFLIP:42 if (!gspca_dev->streaming)43 return 0;44 err = vv6410_set_hflip(gspca_dev, ctrl->val);45 break;46 case V4L2_CID_VFLIP:47 if (!gspca_dev->streaming)48 return 0;49 err = vv6410_set_vflip(gspca_dev, ctrl->val);50 break;51 case V4L2_CID_GAIN:52 err = vv6410_set_analog_gain(gspca_dev, ctrl->val);53 break;54 case V4L2_CID_EXPOSURE:55 err = vv6410_set_exposure(gspca_dev, ctrl->val);56 break;57 }58 return err;59}60 61static const struct v4l2_ctrl_ops vv6410_ctrl_ops = {62 .s_ctrl = vv6410_s_ctrl,63};64 65static int vv6410_probe(struct sd *sd)66{67 u16 data;68 int err;69 70 err = stv06xx_read_sensor(sd, VV6410_DEVICEH, &data);71 if (err < 0)72 return -ENODEV;73 74 if (data != 0x19)75 return -ENODEV;76 77 pr_info("vv6410 sensor detected\n");78 79 sd->gspca_dev.cam.cam_mode = vv6410_mode;80 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(vv6410_mode);81 return 0;82}83 84static int vv6410_init_controls(struct sd *sd)85{86 struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;87 88 v4l2_ctrl_handler_init(hdl, 2);89 /* Disable the hardware VFLIP and HFLIP as we currently lack a90 mechanism to adjust the image offset in such a way that91 we don't need to renegotiate the announced format */92 /* v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops, */93 /* V4L2_CID_HFLIP, 0, 1, 1, 0); */94 /* v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops, */95 /* V4L2_CID_VFLIP, 0, 1, 1, 0); */96 v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops,97 V4L2_CID_EXPOSURE, 0, 32768, 1, 20000);98 v4l2_ctrl_new_std(hdl, &vv6410_ctrl_ops,99 V4L2_CID_GAIN, 0, 15, 1, 10);100 return hdl->error;101}102 103static int vv6410_init(struct sd *sd)104{105 int err = 0, i;106 107 for (i = 0; i < ARRAY_SIZE(stv_bridge_init); i++)108 stv06xx_write_bridge(sd, stv_bridge_init[i].addr, stv_bridge_init[i].data);109 110 err = stv06xx_write_sensor_bytes(sd, (u8 *) vv6410_sensor_init,111 ARRAY_SIZE(vv6410_sensor_init));112 return (err < 0) ? err : 0;113}114 115static int vv6410_start(struct sd *sd)116{117 int err;118 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;119 struct cam *cam = &sd->gspca_dev.cam;120 u32 priv = cam->cam_mode[sd->gspca_dev.curr_mode].priv;121 122 if (priv & VV6410_SUBSAMPLE) {123 gspca_dbg(gspca_dev, D_CONF, "Enabling subsampling\n");124 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x02);125 stv06xx_write_bridge(sd, STV_X_CTRL, 0x06);126 127 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x10);128 } else {129 stv06xx_write_bridge(sd, STV_Y_CTRL, 0x01);130 stv06xx_write_bridge(sd, STV_X_CTRL, 0x0a);131 stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x00);132 133 }134 135 /* Turn on LED */136 err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_ON);137 if (err < 0)138 return err;139 140 err = stv06xx_write_sensor(sd, VV6410_SETUP0, 0);141 if (err < 0)142 return err;143 144 gspca_dbg(gspca_dev, D_STREAM, "Starting stream\n");145 146 return 0;147}148 149static int vv6410_stop(struct sd *sd)150{151 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;152 int err;153 154 /* Turn off LED */155 err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_OFF);156 if (err < 0)157 return err;158 159 err = stv06xx_write_sensor(sd, VV6410_SETUP0, VV6410_LOW_POWER_MODE);160 if (err < 0)161 return err;162 163 gspca_dbg(gspca_dev, D_STREAM, "Halting stream\n");164 165 return 0;166}167 168static int vv6410_dump(struct sd *sd)169{170 u8 i;171 int err = 0;172 173 pr_info("Dumping all vv6410 sensor registers\n");174 for (i = 0; i < 0xff && !err; i++) {175 u16 data;176 err = stv06xx_read_sensor(sd, i, &data);177 pr_info("Register 0x%x contained 0x%x\n", i, data);178 }179 return (err < 0) ? err : 0;180}181 182static int vv6410_set_hflip(struct gspca_dev *gspca_dev, __s32 val)183{184 int err;185 u16 i2c_data;186 struct sd *sd = (struct sd *) gspca_dev;187 188 err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);189 if (err < 0)190 return err;191 192 if (val)193 i2c_data |= VV6410_HFLIP;194 else195 i2c_data &= ~VV6410_HFLIP;196 197 gspca_dbg(gspca_dev, D_CONF, "Set horizontal flip to %d\n", val);198 err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);199 200 return (err < 0) ? err : 0;201}202 203static int vv6410_set_vflip(struct gspca_dev *gspca_dev, __s32 val)204{205 int err;206 u16 i2c_data;207 struct sd *sd = (struct sd *) gspca_dev;208 209 err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);210 if (err < 0)211 return err;212 213 if (val)214 i2c_data |= VV6410_VFLIP;215 else216 i2c_data &= ~VV6410_VFLIP;217 218 gspca_dbg(gspca_dev, D_CONF, "Set vertical flip to %d\n", val);219 err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);220 221 return (err < 0) ? err : 0;222}223 224static int vv6410_set_analog_gain(struct gspca_dev *gspca_dev, __s32 val)225{226 int err;227 struct sd *sd = (struct sd *) gspca_dev;228 229 gspca_dbg(gspca_dev, D_CONF, "Set analog gain to %d\n", val);230 err = stv06xx_write_sensor(sd, VV6410_ANALOGGAIN, 0xf0 | (val & 0xf));231 232 return (err < 0) ? err : 0;233}234 235static int vv6410_set_exposure(struct gspca_dev *gspca_dev, __s32 val)236{237 int err;238 struct sd *sd = (struct sd *) gspca_dev;239 unsigned int fine, coarse;240 241 val = (val * val >> 14) + val / 4;242 243 fine = val % VV6410_CIF_LINELENGTH;244 coarse = min(512, val / VV6410_CIF_LINELENGTH);245 246 gspca_dbg(gspca_dev, D_CONF, "Set coarse exposure to %d, fine exposure to %d\n",247 coarse, fine);248 249 err = stv06xx_write_sensor(sd, VV6410_FINEH, fine >> 8);250 if (err < 0)251 goto out;252 253 err = stv06xx_write_sensor(sd, VV6410_FINEL, fine & 0xff);254 if (err < 0)255 goto out;256 257 err = stv06xx_write_sensor(sd, VV6410_COARSEH, coarse >> 8);258 if (err < 0)259 goto out;260 261 err = stv06xx_write_sensor(sd, VV6410_COARSEL, coarse & 0xff);262 263out:264 return err;265}266