drivers/media/usb/gspca/tv8532.c

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This source file includes following definitions.
reg_w1
reg_w2
tv_8532WriteEEprom
sd_config
tv_8532_setReg
sd_init
setexposure
setgain
sd_start
sd_stopN
sd_pkt_scan
sd_s_ctrl
sd_init_controls
sd_probe
   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Quickcam cameras initialization data
   4  *
   5  * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
   6  */
   7 #define MODULE_NAME "tv8532"
   8 
   9 #include "gspca.h"
  10 
  11 MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
  12 MODULE_DESCRIPTION("TV8532 USB Camera Driver");
  13 MODULE_LICENSE("GPL");
  14 
  15 /* specific webcam descriptor */
  16 struct sd {
  17         struct gspca_dev gspca_dev;     /* !! must be the first item */
  18 
  19         __u8 packet;
  20 };
  21 
  22 static const struct v4l2_pix_format sif_mode[] = {
  23         {176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
  24                 .bytesperline = 176,
  25                 .sizeimage = 176 * 144,
  26                 .colorspace = V4L2_COLORSPACE_SRGB,
  27                 .priv = 1},
  28         {352, 288, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
  29                 .bytesperline = 352,
  30                 .sizeimage = 352 * 288,
  31                 .colorspace = V4L2_COLORSPACE_SRGB,
  32                 .priv = 0},
  33 };
  34 
  35 /* TV-8532A (ICM532A) registers (LE) */
  36 #define R00_PART_CONTROL 0x00
  37 #define         LATENT_CHANGE   0x80
  38 #define         EXPO_CHANGE     0x04
  39 #define R01_TIMING_CONTROL_LOW 0x01
  40 #define         CMD_EEprom_Open 0x30
  41 #define         CMD_EEprom_Close 0x29
  42 #define R03_TABLE_ADDR 0x03
  43 #define R04_WTRAM_DATA_L 0x04
  44 #define R05_WTRAM_DATA_M 0x05
  45 #define R06_WTRAM_DATA_H 0x06
  46 #define R07_TABLE_LEN   0x07
  47 #define R08_RAM_WRITE_ACTION 0x08
  48 #define R0C_AD_WIDTHL   0x0c
  49 #define R0D_AD_WIDTHH   0x0d
  50 #define R0E_AD_HEIGHTL  0x0e
  51 #define R0F_AD_HEIGHTH  0x0f
  52 #define R10_AD_COL_BEGINL 0x10
  53 #define R11_AD_COL_BEGINH 0x11
  54 #define         MIRROR          0x04    /* [10] */
  55 #define R14_AD_ROW_BEGINL 0x14
  56 #define R15_AD_ROWBEGINH  0x15
  57 #define R1C_AD_EXPOSE_TIMEL 0x1c
  58 #define R20_GAIN_G1L    0x20
  59 #define R21_GAIN_G1H    0x21
  60 #define R22_GAIN_RL     0x22
  61 #define R23_GAIN_RH     0x23
  62 #define R24_GAIN_BL     0x24
  63 #define R25_GAIN_BH     0x25
  64 #define R26_GAIN_G2L    0x26
  65 #define R27_GAIN_G2H    0x27
  66 #define R28_QUANT       0x28
  67 #define R29_LINE        0x29
  68 #define R2C_POLARITY    0x2c
  69 #define R2D_POINT       0x2d
  70 #define R2E_POINTH      0x2e
  71 #define R2F_POINTB      0x2f
  72 #define R30_POINTBH     0x30
  73 #define R31_UPD         0x31
  74 #define R2A_HIGH_BUDGET 0x2a
  75 #define R2B_LOW_BUDGET  0x2b
  76 #define R34_VID         0x34
  77 #define R35_VIDH        0x35
  78 #define R36_PID         0x36
  79 #define R37_PIDH        0x37
  80 #define R39_Test1       0x39            /* GPIO */
  81 #define R3B_Test3       0x3b            /* GPIO */
  82 #define R83_AD_IDH      0x83
  83 #define R91_AD_SLOPEREG 0x91
  84 #define R94_AD_BITCONTROL 0x94
  85 
  86 static const u8 eeprom_data[][3] = {
  87 /*      dataH dataM dataL */
  88         {0x01, 0x00, 0x01},
  89         {0x01, 0x80, 0x11},
  90         {0x05, 0x00, 0x14},
  91         {0x05, 0x00, 0x1c},
  92         {0x0d, 0x00, 0x1e},
  93         {0x05, 0x00, 0x1f},
  94         {0x05, 0x05, 0x19},
  95         {0x05, 0x01, 0x1b},
  96         {0x05, 0x09, 0x1e},
  97         {0x0d, 0x89, 0x2e},
  98         {0x05, 0x89, 0x2f},
  99         {0x05, 0x0d, 0xd9},
 100         {0x05, 0x09, 0xf1},
 101 };
 102 
 103 
 104 /* write 1 byte */
 105 static void reg_w1(struct gspca_dev *gspca_dev,
 106                   __u16 index, __u8 value)
 107 {
 108         gspca_dev->usb_buf[0] = value;
 109         usb_control_msg(gspca_dev->dev,
 110                         usb_sndctrlpipe(gspca_dev->dev, 0),
 111                         0x02,
 112                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 113                         0,      /* value */
 114                         index, gspca_dev->usb_buf, 1, 500);
 115 }
 116 
 117 /* write 2 bytes */
 118 static void reg_w2(struct gspca_dev *gspca_dev,
 119                   u16 index, u16 value)
 120 {
 121         gspca_dev->usb_buf[0] = value;
 122         gspca_dev->usb_buf[1] = value >> 8;
 123         usb_control_msg(gspca_dev->dev,
 124                         usb_sndctrlpipe(gspca_dev->dev, 0),
 125                         0x02,
 126                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 127                         0,      /* value */
 128                         index, gspca_dev->usb_buf, 2, 500);
 129 }
 130 
 131 static void tv_8532WriteEEprom(struct gspca_dev *gspca_dev)
 132 {
 133         int i;
 134 
 135         reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Open);
 136         for (i = 0; i < ARRAY_SIZE(eeprom_data); i++) {
 137                 reg_w1(gspca_dev, R03_TABLE_ADDR, i);
 138                 reg_w1(gspca_dev, R04_WTRAM_DATA_L, eeprom_data[i][2]);
 139                 reg_w1(gspca_dev, R05_WTRAM_DATA_M, eeprom_data[i][1]);
 140                 reg_w1(gspca_dev, R06_WTRAM_DATA_H, eeprom_data[i][0]);
 141                 reg_w1(gspca_dev, R08_RAM_WRITE_ACTION, 0);
 142         }
 143         reg_w1(gspca_dev, R07_TABLE_LEN, i);
 144         reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Close);
 145 }
 146 
 147 /* this function is called at probe time */
 148 static int sd_config(struct gspca_dev *gspca_dev,
 149                      const struct usb_device_id *id)
 150 {
 151         struct cam *cam;
 152 
 153         cam = &gspca_dev->cam;
 154         cam->cam_mode = sif_mode;
 155         cam->nmodes = ARRAY_SIZE(sif_mode);
 156 
 157         return 0;
 158 }
 159 
 160 static void tv_8532_setReg(struct gspca_dev *gspca_dev)
 161 {
 162         reg_w1(gspca_dev, R3B_Test3, 0x0a);     /* Test0Sel = 10 */
 163         /******************************************************/
 164         reg_w1(gspca_dev, R0E_AD_HEIGHTL, 0x90);
 165         reg_w1(gspca_dev, R0F_AD_HEIGHTH, 0x01);
 166         reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, 0x018f);
 167         reg_w1(gspca_dev, R10_AD_COL_BEGINL, 0x44);
 168                                                 /* begin active line */
 169         reg_w1(gspca_dev, R11_AD_COL_BEGINH, 0x00);
 170                                                 /* mirror and digital gain */
 171         reg_w1(gspca_dev, R14_AD_ROW_BEGINL, 0x0a);
 172 
 173         reg_w1(gspca_dev, R94_AD_BITCONTROL, 0x02);
 174         reg_w1(gspca_dev, R91_AD_SLOPEREG, 0x00);
 175         reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
 176                                                 /* = 0x84 */
 177 }
 178 
 179 /* this function is called at probe and resume time */
 180 static int sd_init(struct gspca_dev *gspca_dev)
 181 {
 182         tv_8532WriteEEprom(gspca_dev);
 183 
 184         return 0;
 185 }
 186 
 187 static void setexposure(struct gspca_dev *gspca_dev, s32 val)
 188 {
 189         reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, val);
 190         reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
 191                                                 /* 0x84 */
 192 }
 193 
 194 static void setgain(struct gspca_dev *gspca_dev, s32 val)
 195 {
 196         reg_w2(gspca_dev, R20_GAIN_G1L, val);
 197         reg_w2(gspca_dev, R22_GAIN_RL, val);
 198         reg_w2(gspca_dev, R24_GAIN_BL, val);
 199         reg_w2(gspca_dev, R26_GAIN_G2L, val);
 200 }
 201 
 202 /* -- start the camera -- */
 203 static int sd_start(struct gspca_dev *gspca_dev)
 204 {
 205         struct sd *sd = (struct sd *) gspca_dev;
 206 
 207         reg_w1(gspca_dev, R0C_AD_WIDTHL, 0xe8);         /* 0x20; 0x0c */
 208         reg_w1(gspca_dev, R0D_AD_WIDTHH, 0x03);
 209 
 210         /************************************************/
 211         reg_w1(gspca_dev, R28_QUANT, 0x90);
 212                                         /* 0x72 compressed mode 0x28 */
 213         if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
 214                 /* 176x144 */
 215                 reg_w1(gspca_dev, R29_LINE, 0x41);
 216                                         /* CIF - 2 lines/packet */
 217         } else {
 218                 /* 352x288 */
 219                 reg_w1(gspca_dev, R29_LINE, 0x81);
 220                                         /* CIF - 2 lines/packet */
 221         }
 222         /************************************************/
 223         reg_w1(gspca_dev, R2C_POLARITY, 0x10);          /* slow clock */
 224         reg_w1(gspca_dev, R2D_POINT, 0x14);
 225         reg_w1(gspca_dev, R2E_POINTH, 0x01);
 226         reg_w1(gspca_dev, R2F_POINTB, 0x12);
 227         reg_w1(gspca_dev, R30_POINTBH, 0x01);
 228 
 229         tv_8532_setReg(gspca_dev);
 230 
 231         /************************************************/
 232         reg_w1(gspca_dev, R31_UPD, 0x01);       /* update registers */
 233         msleep(200);
 234         reg_w1(gspca_dev, R31_UPD, 0x00);       /* end update */
 235 
 236         gspca_dev->empty_packet = 0;            /* check the empty packets */
 237         sd->packet = 0;                         /* ignore the first packets */
 238 
 239         return 0;
 240 }
 241 
 242 static void sd_stopN(struct gspca_dev *gspca_dev)
 243 {
 244         reg_w1(gspca_dev, R3B_Test3, 0x0b);     /* Test0Sel = 11 = GPIO */
 245 }
 246 
 247 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 248                         u8 *data,                       /* isoc packet */
 249                         int len)                        /* iso packet length */
 250 {
 251         struct sd *sd = (struct sd *) gspca_dev;
 252         int packet_type0, packet_type1;
 253 
 254         packet_type0 = packet_type1 = INTER_PACKET;
 255         if (gspca_dev->empty_packet) {
 256                 gspca_dev->empty_packet = 0;
 257                 sd->packet = gspca_dev->pixfmt.height / 2;
 258                 packet_type0 = FIRST_PACKET;
 259         } else if (sd->packet == 0)
 260                 return;                 /* 2 more lines in 352x288 ! */
 261         sd->packet--;
 262         if (sd->packet == 0)
 263                 packet_type1 = LAST_PACKET;
 264 
 265         /* each packet contains:
 266          * - header 2 bytes
 267          * - RGRG line
 268          * - 4 bytes
 269          * - GBGB line
 270          * - 4 bytes
 271          */
 272         gspca_frame_add(gspca_dev, packet_type0,
 273                         data + 2, gspca_dev->pixfmt.width);
 274         gspca_frame_add(gspca_dev, packet_type1,
 275                         data + gspca_dev->pixfmt.width + 5,
 276                         gspca_dev->pixfmt.width);
 277 }
 278 
 279 static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
 280 {
 281         struct gspca_dev *gspca_dev =
 282                 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
 283 
 284         gspca_dev->usb_err = 0;
 285 
 286         if (!gspca_dev->streaming)
 287                 return 0;
 288 
 289         switch (ctrl->id) {
 290         case V4L2_CID_EXPOSURE:
 291                 setexposure(gspca_dev, ctrl->val);
 292                 break;
 293         case V4L2_CID_GAIN:
 294                 setgain(gspca_dev, ctrl->val);
 295                 break;
 296         }
 297         return gspca_dev->usb_err;
 298 }
 299 
 300 static const struct v4l2_ctrl_ops sd_ctrl_ops = {
 301         .s_ctrl = sd_s_ctrl,
 302 };
 303 
 304 static int sd_init_controls(struct gspca_dev *gspca_dev)
 305 {
 306         struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
 307 
 308         gspca_dev->vdev.ctrl_handler = hdl;
 309         v4l2_ctrl_handler_init(hdl, 2);
 310         v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
 311                         V4L2_CID_EXPOSURE, 0, 0x18f, 1, 0x18f);
 312         v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
 313                         V4L2_CID_GAIN, 0, 0x7ff, 1, 0x100);
 314 
 315         if (hdl->error) {
 316                 pr_err("Could not initialize controls\n");
 317                 return hdl->error;
 318         }
 319         return 0;
 320 }
 321 
 322 /* sub-driver description */
 323 static const struct sd_desc sd_desc = {
 324         .name = MODULE_NAME,
 325         .config = sd_config,
 326         .init = sd_init,
 327         .init_controls = sd_init_controls,
 328         .start = sd_start,
 329         .stopN = sd_stopN,
 330         .pkt_scan = sd_pkt_scan,
 331 };
 332 
 333 /* -- module initialisation -- */
 334 static const struct usb_device_id device_table[] = {
 335         {USB_DEVICE(0x046d, 0x0920)},
 336         {USB_DEVICE(0x046d, 0x0921)},
 337         {USB_DEVICE(0x0545, 0x808b)},
 338         {USB_DEVICE(0x0545, 0x8333)},
 339         {USB_DEVICE(0x0923, 0x010f)},
 340         {}
 341 };
 342 
 343 MODULE_DEVICE_TABLE(usb, device_table);
 344 
 345 /* -- device connect -- */
 346 static int sd_probe(struct usb_interface *intf,
 347                     const struct usb_device_id *id)
 348 {
 349         return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
 350                                THIS_MODULE);
 351 }
 352 
 353 static struct usb_driver sd_driver = {
 354         .name = MODULE_NAME,
 355         .id_table = device_table,
 356         .probe = sd_probe,
 357         .disconnect = gspca_disconnect,
 358 #ifdef CONFIG_PM
 359         .suspend = gspca_suspend,
 360         .resume = gspca_resume,
 361         .reset_resume = gspca_resume,
 362 #endif
 363 };
 364 
 365 module_usb_driver(sd_driver);
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root/drivers/media/usb/gspca/tv8532.c

DEFINITIONS
