sn9c102_tas5130d1b.c

Go to the documentation of this file.

/***************************************************************************
 * Plug-in for TAS5130D1B image sensor connected to the SN9C1xx PC Camera  *
 * Controllers                                                             *
 *                                                                         *
 * Copyright (C) 2004-2007 by Luca Risolia <[email protected]>  *
 *                                                                         *
 * 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       *
 * (at your option) 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., 675 Mass Ave, Cambridge, MA 02139, USA.               *
 ***************************************************************************/

#include "sn9c102_sensor.h"
#include "sn9c102_devtable.h"


static int tas5130d1b_init(struct sn9c102_device* cam)
{
    int err;

    err = sn9c102_write_const_regs(cam, {0x01, 0x01}, {0x20, 0x17},
                       {0x04, 0x01}, {0x01, 0x10},
                       {0x00, 0x11}, {0x00, 0x14},
                       {0x60, 0x17}, {0x07, 0x18});

    return err;
}


static int tas5130d1b_set_ctrl(struct sn9c102_device* cam,
                   const struct v4l2_control* ctrl)
{
    int err = 0;

    switch (ctrl->id) {
    case V4L2_CID_GAIN:
        err += sn9c102_i2c_write(cam, 0x20, 0xf6 - ctrl->value);
        break;
    case V4L2_CID_EXPOSURE:
        err += sn9c102_i2c_write(cam, 0x40, 0x47 - ctrl->value);
        break;
    default:
        return -EINVAL;
    }

    return err ? -EIO : 0;
}


static int tas5130d1b_set_crop(struct sn9c102_device* cam,
                   const struct v4l2_rect* rect)
{
    struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
    u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 104,
       v_start = (u8)(rect->top - s->cropcap.bounds.top) + 12;
    int err = 0;

    err += sn9c102_write_reg(cam, h_start, 0x12);
    err += sn9c102_write_reg(cam, v_start, 0x13);

    /* Do NOT change! */
    err += sn9c102_write_reg(cam, 0x1f, 0x1a);
    err += sn9c102_write_reg(cam, 0x1a, 0x1b);
    err += sn9c102_write_reg(cam, sn9c102_pread_reg(cam, 0x19), 0x19);

    return err;
}


static int tas5130d1b_set_pix_format(struct sn9c102_device* cam,
                     const struct v4l2_pix_format* pix)
{
    int err = 0;

    if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
        err += sn9c102_write_reg(cam, 0x63, 0x19);
    else
        err += sn9c102_write_reg(cam, 0xf3, 0x19);

    return err;
}


static const struct sn9c102_sensor tas5130d1b = {
    .name = "TAS5130D1B",
    .maintainer = "Luca Risolia <[email protected]>",
    .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102,
    .sysfs_ops = SN9C102_I2C_WRITE,
    .frequency = SN9C102_I2C_100KHZ,
    .interface = SN9C102_I2C_3WIRES,
    .init = &tas5130d1b_init,
    .qctrl = {
        {
            .id = V4L2_CID_GAIN,
            .type = V4L2_CTRL_TYPE_INTEGER,
            .name = "global gain",
            .minimum = 0x00,
            .maximum = 0xf6,
            .step = 0x02,
            .default_value = 0x00,
            .flags = 0,
        },
        {
            .id = V4L2_CID_EXPOSURE,
            .type = V4L2_CTRL_TYPE_INTEGER,
            .name = "exposure",
            .minimum = 0x00,
            .maximum = 0x47,
            .step = 0x01,
            .default_value = 0x00,
            .flags = 0,
        },
    },
    .set_ctrl = &tas5130d1b_set_ctrl,
    .cropcap = {
        .bounds = {
            .left = 0,
            .top = 0,
            .width = 640,
            .height = 480,
        },
        .defrect = {
            .left = 0,
            .top = 0,
            .width = 640,
            .height = 480,
        },
    },
    .set_crop = &tas5130d1b_set_crop,
    .pix_format = {
        .width = 640,
        .height = 480,
        .pixelformat = V4L2_PIX_FMT_SBGGR8,
        .priv = 8,
    },
    .set_pix_format = &tas5130d1b_set_pix_format
};


int sn9c102_probe_tas5130d1b(struct sn9c102_device* cam)
{
    const struct usb_device_id tas5130d1b_id_table[] = {
        { USB_DEVICE(0x0c45, 0x6024), },
        { USB_DEVICE(0x0c45, 0x6025), },
        { USB_DEVICE(0x0c45, 0x60aa), },
        { }
    };

    /* Sensor detection is based on USB pid/vid */
    if (!sn9c102_match_id(cam, tas5130d1b_id_table))
        return -ENODEV;

    sn9c102_attach_sensor(cam, &tas5130d1b);

    return 0;
}