diff options
Diffstat (limited to 'drivers/media/usb/gspca/tv8532.c')
| -rw-r--r-- | drivers/media/usb/gspca/tv8532.c | 378 |
1 files changed, 378 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/tv8532.c b/drivers/media/usb/gspca/tv8532.c new file mode 100644 index 0000000..8591324 --- /dev/null +++ b/drivers/media/usb/gspca/tv8532.c @@ -0,0 +1,378 @@ +/* + * Quickcam cameras initialization data + * + * V4L2 by Jean-Francois Moine <http://moinejf.free.fr> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ +#define MODULE_NAME "tv8532" + +#include "gspca.h" + +MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>"); +MODULE_DESCRIPTION("TV8532 USB Camera Driver"); +MODULE_LICENSE("GPL"); + +/* specific webcam descriptor */ +struct sd { + struct gspca_dev gspca_dev; /* !! must be the first item */ + + __u8 packet; +}; + +static const struct v4l2_pix_format sif_mode[] = { + {176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, + .bytesperline = 176, + .sizeimage = 176 * 144, + .colorspace = V4L2_COLORSPACE_SRGB, + .priv = 1}, + {352, 288, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, + .bytesperline = 352, + .sizeimage = 352 * 288, + .colorspace = V4L2_COLORSPACE_SRGB, + .priv = 0}, +}; + +/* TV-8532A (ICM532A) registers (LE) */ +#define R00_PART_CONTROL 0x00 +#define LATENT_CHANGE 0x80 +#define EXPO_CHANGE 0x04 +#define R01_TIMING_CONTROL_LOW 0x01 +#define CMD_EEprom_Open 0x30 +#define CMD_EEprom_Close 0x29 +#define R03_TABLE_ADDR 0x03 +#define R04_WTRAM_DATA_L 0x04 +#define R05_WTRAM_DATA_M 0x05 +#define R06_WTRAM_DATA_H 0x06 +#define R07_TABLE_LEN 0x07 +#define R08_RAM_WRITE_ACTION 0x08 +#define R0C_AD_WIDTHL 0x0c +#define R0D_AD_WIDTHH 0x0d +#define R0E_AD_HEIGHTL 0x0e +#define R0F_AD_HEIGHTH 0x0f +#define R10_AD_COL_BEGINL 0x10 +#define R11_AD_COL_BEGINH 0x11 +#define MIRROR 0x04 /* [10] */ +#define R14_AD_ROW_BEGINL 0x14 +#define R15_AD_ROWBEGINH 0x15 +#define R1C_AD_EXPOSE_TIMEL 0x1c +#define R20_GAIN_G1L 0x20 +#define R21_GAIN_G1H 0x21 +#define R22_GAIN_RL 0x22 +#define R23_GAIN_RH 0x23 +#define R24_GAIN_BL 0x24 +#define R25_GAIN_BH 0x25 +#define R26_GAIN_G2L 0x26 +#define R27_GAIN_G2H 0x27 +#define R28_QUANT 0x28 +#define R29_LINE 0x29 +#define R2C_POLARITY 0x2c +#define R2D_POINT 0x2d +#define R2E_POINTH 0x2e +#define R2F_POINTB 0x2f +#define R30_POINTBH 0x30 +#define R31_UPD 0x31 +#define R2A_HIGH_BUDGET 0x2a +#define R2B_LOW_BUDGET 0x2b +#define R34_VID 0x34 +#define R35_VIDH 0x35 +#define R36_PID 0x36 +#define R37_PIDH 0x37 +#define R39_Test1 0x39 /* GPIO */ +#define R3B_Test3 0x3b /* GPIO */ +#define R83_AD_IDH 0x83 +#define R91_AD_SLOPEREG 0x91 +#define R94_AD_BITCONTROL 0x94 + +static const u8 eeprom_data[][3] = { +/* dataH dataM dataL */ + {0x01, 0x00, 0x01}, + {0x01, 0x80, 0x11}, + {0x05, 0x00, 0x14}, + {0x05, 0x00, 0x1c}, + {0x0d, 0x00, 0x1e}, + {0x05, 0x00, 0x1f}, + {0x05, 0x05, 0x19}, + {0x05, 0x01, 0x1b}, + {0x05, 0x09, 0x1e}, + {0x0d, 0x89, 0x2e}, + {0x05, 0x89, 0x2f}, + {0x05, 0x0d, 0xd9}, + {0x05, 0x09, 0xf1}, +}; + + +/* write 1 byte */ +static void reg_w1(struct gspca_dev *gspca_dev, + __u16 index, __u8 value) +{ + gspca_dev->usb_buf[0] = value; + usb_control_msg(gspca_dev->dev, + usb_sndctrlpipe(gspca_dev->dev, 0), + 0x02, + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + 0, /* value */ + index, gspca_dev->usb_buf, 1, 500); +} + +/* write 2 bytes */ +static void reg_w2(struct gspca_dev *gspca_dev, + u16 index, u16 value) +{ + gspca_dev->usb_buf[0] = value; + gspca_dev->usb_buf[1] = value >> 8; + usb_control_msg(gspca_dev->dev, + usb_sndctrlpipe(gspca_dev->dev, 0), + 0x02, + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + 0, /* value */ + index, gspca_dev->usb_buf, 2, 500); +} + +static void tv_8532WriteEEprom(struct gspca_dev *gspca_dev) +{ + int i; + + reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Open); + for (i = 0; i < ARRAY_SIZE(eeprom_data); i++) { + reg_w1(gspca_dev, R03_TABLE_ADDR, i); + reg_w1(gspca_dev, R04_WTRAM_DATA_L, eeprom_data[i][2]); + reg_w1(gspca_dev, R05_WTRAM_DATA_M, eeprom_data[i][1]); + reg_w1(gspca_dev, R06_WTRAM_DATA_H, eeprom_data[i][0]); + reg_w1(gspca_dev, R08_RAM_WRITE_ACTION, 0); + } + reg_w1(gspca_dev, R07_TABLE_LEN, i); + reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Close); +} + +/* this function is called at probe time */ +static int sd_config(struct gspca_dev *gspca_dev, + const struct usb_device_id *id) +{ + struct cam *cam; + + cam = &gspca_dev->cam; + cam->cam_mode = sif_mode; + cam->nmodes = ARRAY_SIZE(sif_mode); + + return 0; +} + +static void tv_8532_setReg(struct gspca_dev *gspca_dev) +{ + reg_w1(gspca_dev, R3B_Test3, 0x0a); /* Test0Sel = 10 */ + /******************************************************/ + reg_w1(gspca_dev, R0E_AD_HEIGHTL, 0x90); + reg_w1(gspca_dev, R0F_AD_HEIGHTH, 0x01); + reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, 0x018f); + reg_w1(gspca_dev, R10_AD_COL_BEGINL, 0x44); + /* begin active line */ + reg_w1(gspca_dev, R11_AD_COL_BEGINH, 0x00); + /* mirror and digital gain */ + reg_w1(gspca_dev, R14_AD_ROW_BEGINL, 0x0a); + + reg_w1(gspca_dev, R94_AD_BITCONTROL, 0x02); + reg_w1(gspca_dev, R91_AD_SLOPEREG, 0x00); + reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE); + /* = 0x84 */ +} + +/* this function is called at probe and resume time */ +static int sd_init(struct gspca_dev *gspca_dev) +{ + tv_8532WriteEEprom(gspca_dev); + + return 0; +} + +static void setexposure(struct gspca_dev *gspca_dev, s32 val) +{ + reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, val); + reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE); + /* 0x84 */ +} + +static void setgain(struct gspca_dev *gspca_dev, s32 val) +{ + reg_w2(gspca_dev, R20_GAIN_G1L, val); + reg_w2(gspca_dev, R22_GAIN_RL, val); + reg_w2(gspca_dev, R24_GAIN_BL, val); + reg_w2(gspca_dev, R26_GAIN_G2L, val); +} + +/* -- start the camera -- */ +static int sd_start(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *) gspca_dev; + + reg_w1(gspca_dev, R0C_AD_WIDTHL, 0xe8); /* 0x20; 0x0c */ + reg_w1(gspca_dev, R0D_AD_WIDTHH, 0x03); + + /************************************************/ + reg_w1(gspca_dev, R28_QUANT, 0x90); + /* 0x72 compressed mode 0x28 */ + if (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) { + /* 176x144 */ + reg_w1(gspca_dev, R29_LINE, 0x41); + /* CIF - 2 lines/packet */ + } else { + /* 352x288 */ + reg_w1(gspca_dev, R29_LINE, 0x81); + /* CIF - 2 lines/packet */ + } + /************************************************/ + reg_w1(gspca_dev, R2C_POLARITY, 0x10); /* slow clock */ + reg_w1(gspca_dev, R2D_POINT, 0x14); + reg_w1(gspca_dev, R2E_POINTH, 0x01); + reg_w1(gspca_dev, R2F_POINTB, 0x12); + reg_w1(gspca_dev, R30_POINTBH, 0x01); + + tv_8532_setReg(gspca_dev); + + /************************************************/ + reg_w1(gspca_dev, R31_UPD, 0x01); /* update registers */ + msleep(200); + reg_w1(gspca_dev, R31_UPD, 0x00); /* end update */ + + gspca_dev->empty_packet = 0; /* check the empty packets */ + sd->packet = 0; /* ignore the first packets */ + + return 0; +} + +static void sd_stopN(struct gspca_dev *gspca_dev) +{ + reg_w1(gspca_dev, R3B_Test3, 0x0b); /* Test0Sel = 11 = GPIO */ +} + +static void sd_pkt_scan(struct gspca_dev *gspca_dev, + u8 *data, /* isoc packet */ + int len) /* iso packet length */ +{ + struct sd *sd = (struct sd *) gspca_dev; + int packet_type0, packet_type1; + + packet_type0 = packet_type1 = INTER_PACKET; + if (gspca_dev->empty_packet) { + gspca_dev->empty_packet = 0; + sd->packet = gspca_dev->height / 2; + packet_type0 = FIRST_PACKET; + } else if (sd->packet == 0) + return; /* 2 more lines in 352x288 ! */ + sd->packet--; + if (sd->packet == 0) + packet_type1 = LAST_PACKET; + + /* each packet contains: + * - header 2 bytes + * - RGRG line + * - 4 bytes + * - GBGB line + * - 4 bytes + */ + gspca_frame_add(gspca_dev, packet_type0, + data + 2, gspca_dev->width); + gspca_frame_add(gspca_dev, packet_type1, + data + gspca_dev->width + 5, gspca_dev->width); +} + +static int sd_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct gspca_dev *gspca_dev = + container_of(ctrl->handler, struct gspca_dev, ctrl_handler); + + gspca_dev->usb_err = 0; + + if (!gspca_dev->streaming) + return 0; + + switch (ctrl->id) { + case V4L2_CID_EXPOSURE: + setexposure(gspca_dev, ctrl->val); + break; + case V4L2_CID_GAIN: + setgain(gspca_dev, ctrl->val); + break; + } + return gspca_dev->usb_err; +} + +static const struct v4l2_ctrl_ops sd_ctrl_ops = { + .s_ctrl = sd_s_ctrl, +}; + +static int sd_init_controls(struct gspca_dev *gspca_dev) +{ + struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; + + gspca_dev->vdev.ctrl_handler = hdl; + v4l2_ctrl_handler_init(hdl, 2); + v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, + V4L2_CID_EXPOSURE, 0, 0x18f, 1, 0x18f); + v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, + V4L2_CID_GAIN, 0, 0x7ff, 1, 0x100); + + if (hdl->error) { + pr_err("Could not initialize controls\n"); + return hdl->error; + } + return 0; +} + +/* sub-driver description */ +static const struct sd_desc sd_desc = { + .name = MODULE_NAME, + .config = sd_config, + .init = sd_init, + .init_controls = sd_init_controls, + .start = sd_start, + .stopN = sd_stopN, + .pkt_scan = sd_pkt_scan, +}; + +/* -- module initialisation -- */ +static const struct usb_device_id device_table[] = { + {USB_DEVICE(0x046d, 0x0920)}, + {USB_DEVICE(0x046d, 0x0921)}, + {USB_DEVICE(0x0545, 0x808b)}, + {USB_DEVICE(0x0545, 0x8333)}, + {USB_DEVICE(0x0923, 0x010f)}, + {} +}; + +MODULE_DEVICE_TABLE(usb, device_table); + +/* -- device connect -- */ +static int sd_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd), + THIS_MODULE); +} + +static struct usb_driver sd_driver = { + .name = MODULE_NAME, + .id_table = device_table, + .probe = sd_probe, + .disconnect = gspca_disconnect, +#ifdef CONFIG_PM + .suspend = gspca_suspend, + .resume = gspca_resume, + .reset_resume = gspca_resume, +#endif +}; + +module_usb_driver(sd_driver); |