458 lines
11 KiB
C
458 lines
11 KiB
C
/*
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* Driver for the mt9m111 sensor
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*
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* Copyright (C) 2008 Erik Andrén
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* Copyright (C) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project.
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* Copyright (C) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br>
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*
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* Portions of code to USB interface and ALi driver software,
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* Copyright (c) 2006 Willem Duinker
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* v4l2 interface modeled after the V4L2 driver
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* for SN9C10x PC Camera Controllers
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, version 2.
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*
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include "m5602_mt9m111.h"
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static int mt9m111_s_ctrl(struct v4l2_ctrl *ctrl);
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static void mt9m111_dump_registers(struct sd *sd);
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static struct v4l2_pix_format mt9m111_modes[] = {
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{
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640,
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480,
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V4L2_PIX_FMT_SBGGR8,
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V4L2_FIELD_NONE,
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.sizeimage = 640 * 480,
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.bytesperline = 640,
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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 const struct v4l2_ctrl_ops mt9m111_ctrl_ops = {
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.s_ctrl = mt9m111_s_ctrl,
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};
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static const struct v4l2_ctrl_config mt9m111_greenbal_cfg = {
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.ops = &mt9m111_ctrl_ops,
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.id = M5602_V4L2_CID_GREEN_BALANCE,
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.name = "Green Balance",
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.type = V4L2_CTRL_TYPE_INTEGER,
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.min = 0,
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.max = 0x7ff,
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.step = 1,
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.def = MT9M111_GREEN_GAIN_DEFAULT,
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.flags = V4L2_CTRL_FLAG_SLIDER,
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};
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int mt9m111_probe(struct sd *sd)
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{
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u8 data[2] = {0x00, 0x00};
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int i;
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struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
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if (force_sensor) {
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if (force_sensor == MT9M111_SENSOR) {
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pr_info("Forcing a %s sensor\n", mt9m111.name);
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goto sensor_found;
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}
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/* If we want to force another sensor, don't try to probe this
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* one */
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return -ENODEV;
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}
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PDEBUG(D_PROBE, "Probing for a mt9m111 sensor");
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/* Do the preinit */
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for (i = 0; i < ARRAY_SIZE(preinit_mt9m111); i++) {
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if (preinit_mt9m111[i][0] == BRIDGE) {
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m5602_write_bridge(sd,
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preinit_mt9m111[i][1],
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preinit_mt9m111[i][2]);
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} else {
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data[0] = preinit_mt9m111[i][2];
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data[1] = preinit_mt9m111[i][3];
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m5602_write_sensor(sd,
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preinit_mt9m111[i][1], data, 2);
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}
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}
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if (m5602_read_sensor(sd, MT9M111_SC_CHIPVER, data, 2))
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return -ENODEV;
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if ((data[0] == 0x14) && (data[1] == 0x3a)) {
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pr_info("Detected a mt9m111 sensor\n");
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goto sensor_found;
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}
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return -ENODEV;
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sensor_found:
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sd->gspca_dev.cam.cam_mode = mt9m111_modes;
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sd->gspca_dev.cam.nmodes = ARRAY_SIZE(mt9m111_modes);
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return 0;
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}
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int mt9m111_init(struct sd *sd)
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{
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int i, err = 0;
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/* Init the sensor */
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for (i = 0; i < ARRAY_SIZE(init_mt9m111) && !err; i++) {
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u8 data[2];
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if (init_mt9m111[i][0] == BRIDGE) {
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err = m5602_write_bridge(sd,
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init_mt9m111[i][1],
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init_mt9m111[i][2]);
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} else {
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data[0] = init_mt9m111[i][2];
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data[1] = init_mt9m111[i][3];
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err = m5602_write_sensor(sd,
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init_mt9m111[i][1], data, 2);
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}
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}
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if (dump_sensor)
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mt9m111_dump_registers(sd);
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return 0;
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}
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int mt9m111_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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sd->gspca_dev.vdev.ctrl_handler = hdl;
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v4l2_ctrl_handler_init(hdl, 7);
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sd->auto_white_bal = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops,
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V4L2_CID_AUTO_WHITE_BALANCE,
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0, 1, 1, 0);
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sd->green_bal = v4l2_ctrl_new_custom(hdl, &mt9m111_greenbal_cfg, NULL);
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sd->red_bal = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops,
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V4L2_CID_RED_BALANCE, 0, 0x7ff, 1,
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MT9M111_RED_GAIN_DEFAULT);
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sd->blue_bal = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops,
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V4L2_CID_BLUE_BALANCE, 0, 0x7ff, 1,
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MT9M111_BLUE_GAIN_DEFAULT);
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v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops, V4L2_CID_GAIN, 0,
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(INITIAL_MAX_GAIN - 1) * 2 * 2 * 2, 1,
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MT9M111_DEFAULT_GAIN);
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sd->hflip = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops, V4L2_CID_HFLIP,
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0, 1, 1, 0);
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sd->vflip = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops, V4L2_CID_VFLIP,
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0, 1, 1, 0);
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if (hdl->error) {
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pr_err("Could not initialize controls\n");
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return hdl->error;
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}
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v4l2_ctrl_auto_cluster(4, &sd->auto_white_bal, 0, false);
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v4l2_ctrl_cluster(2, &sd->hflip);
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return 0;
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}
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int mt9m111_start(struct sd *sd)
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{
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int i, err = 0;
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u8 data[2];
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struct cam *cam = &sd->gspca_dev.cam;
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struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
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int width = cam->cam_mode[sd->gspca_dev.curr_mode].width - 1;
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int height = cam->cam_mode[sd->gspca_dev.curr_mode].height;
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for (i = 0; i < ARRAY_SIZE(start_mt9m111) && !err; i++) {
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if (start_mt9m111[i][0] == BRIDGE) {
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err = m5602_write_bridge(sd,
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start_mt9m111[i][1],
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start_mt9m111[i][2]);
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} else {
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data[0] = start_mt9m111[i][2];
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data[1] = start_mt9m111[i][3];
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err = m5602_write_sensor(sd,
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start_mt9m111[i][1], data, 2);
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}
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}
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff);
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff));
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if (err < 0)
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return err;
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for (i = 0; i < 2 && !err; i++)
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err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 2);
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if (err < 0)
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return err;
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for (i = 0; i < 2 && !err; i++)
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err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, 0);
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA,
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(width >> 8) & 0xff);
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, width & 0xff);
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if (err < 0)
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return err;
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err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
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if (err < 0)
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return err;
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switch (width) {
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case 640:
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PDEBUG(D_CONF, "Configuring camera for VGA mode");
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break;
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case 320:
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PDEBUG(D_CONF, "Configuring camera for QVGA mode");
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break;
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}
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return err;
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}
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void mt9m111_disconnect(struct sd *sd)
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{
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sd->sensor = NULL;
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}
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static int mt9m111_set_hvflip(struct gspca_dev *gspca_dev)
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{
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int err;
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u8 data[2] = {0x00, 0x00};
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struct sd *sd = (struct sd *) gspca_dev;
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int hflip;
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int vflip;
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PDEBUG(D_CONF, "Set hvflip to %d %d", sd->hflip->val, sd->vflip->val);
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/* The mt9m111 is flipped by default */
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hflip = !sd->hflip->val;
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vflip = !sd->vflip->val;
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/* Set the correct page map */
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err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
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if (err < 0)
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return err;
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data[0] = MT9M111_RMB_OVER_SIZED;
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if (gspca_dev->width == 640) {
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data[1] = MT9M111_RMB_ROW_SKIP_2X |
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MT9M111_RMB_COLUMN_SKIP_2X |
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(hflip << 1) | vflip;
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} else {
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data[1] = MT9M111_RMB_ROW_SKIP_4X |
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MT9M111_RMB_COLUMN_SKIP_4X |
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(hflip << 1) | vflip;
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}
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err = m5602_write_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
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data, 2);
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return err;
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}
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static int mt9m111_set_auto_white_balance(struct gspca_dev *gspca_dev,
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__s32 val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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int err;
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u8 data[2];
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err = m5602_read_sensor(sd, MT9M111_CP_OPERATING_MODE_CTL, data, 2);
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if (err < 0)
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return err;
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data[1] = ((data[1] & 0xfd) | ((val & 0x01) << 1));
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err = m5602_write_sensor(sd, MT9M111_CP_OPERATING_MODE_CTL, data, 2);
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PDEBUG(D_CONF, "Set auto white balance %d", val);
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return err;
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}
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static int mt9m111_set_gain(struct gspca_dev *gspca_dev, __s32 val)
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{
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int err, tmp;
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u8 data[2] = {0x00, 0x00};
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struct sd *sd = (struct sd *) gspca_dev;
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/* Set the correct page map */
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err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
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if (err < 0)
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return err;
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if (val >= INITIAL_MAX_GAIN * 2 * 2 * 2)
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return -EINVAL;
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if ((val >= INITIAL_MAX_GAIN * 2 * 2) &&
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(val < (INITIAL_MAX_GAIN - 1) * 2 * 2 * 2))
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tmp = (1 << 10) | (val << 9) |
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(val << 8) | (val / 8);
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else if ((val >= INITIAL_MAX_GAIN * 2) &&
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(val < INITIAL_MAX_GAIN * 2 * 2))
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tmp = (1 << 9) | (1 << 8) | (val / 4);
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else if ((val >= INITIAL_MAX_GAIN) &&
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(val < INITIAL_MAX_GAIN * 2))
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tmp = (1 << 8) | (val / 2);
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else
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tmp = val;
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data[1] = (tmp & 0xff);
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data[0] = (tmp & 0xff00) >> 8;
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PDEBUG(D_CONF, "tmp=%d, data[1]=%d, data[0]=%d", tmp,
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data[1], data[0]);
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err = m5602_write_sensor(sd, MT9M111_SC_GLOBAL_GAIN,
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data, 2);
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return err;
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}
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static int mt9m111_set_green_balance(struct gspca_dev *gspca_dev, __s32 val)
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{
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int err;
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u8 data[2];
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struct sd *sd = (struct sd *) gspca_dev;
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data[1] = (val & 0xff);
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data[0] = (val & 0xff00) >> 8;
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PDEBUG(D_CONF, "Set green balance %d", val);
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err = m5602_write_sensor(sd, MT9M111_SC_GREEN_1_GAIN,
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data, 2);
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if (err < 0)
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return err;
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return m5602_write_sensor(sd, MT9M111_SC_GREEN_2_GAIN,
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data, 2);
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}
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static int mt9m111_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
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{
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u8 data[2];
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struct sd *sd = (struct sd *) gspca_dev;
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data[1] = (val & 0xff);
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data[0] = (val & 0xff00) >> 8;
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PDEBUG(D_CONF, "Set blue balance %d", val);
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return m5602_write_sensor(sd, MT9M111_SC_BLUE_GAIN,
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data, 2);
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}
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static int mt9m111_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
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{
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u8 data[2];
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struct sd *sd = (struct sd *) gspca_dev;
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data[1] = (val & 0xff);
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data[0] = (val & 0xff00) >> 8;
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PDEBUG(D_CONF, "Set red balance %d", val);
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return m5602_write_sensor(sd, MT9M111_SC_RED_GAIN,
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data, 2);
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}
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static int mt9m111_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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struct sd *sd = (struct sd *) gspca_dev;
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int err;
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if (!gspca_dev->streaming)
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return 0;
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switch (ctrl->id) {
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case V4L2_CID_AUTO_WHITE_BALANCE:
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err = mt9m111_set_auto_white_balance(gspca_dev, ctrl->val);
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if (err || ctrl->val)
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return err;
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err = mt9m111_set_green_balance(gspca_dev, sd->green_bal->val);
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if (err)
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return err;
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err = mt9m111_set_red_balance(gspca_dev, sd->red_bal->val);
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if (err)
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return err;
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err = mt9m111_set_blue_balance(gspca_dev, sd->blue_bal->val);
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break;
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case V4L2_CID_GAIN:
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err = mt9m111_set_gain(gspca_dev, ctrl->val);
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break;
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case V4L2_CID_HFLIP:
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err = mt9m111_set_hvflip(gspca_dev);
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break;
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default:
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return -EINVAL;
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}
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return err;
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}
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static void mt9m111_dump_registers(struct sd *sd)
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{
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u8 address, value[2] = {0x00, 0x00};
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pr_info("Dumping the mt9m111 register state\n");
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pr_info("Dumping the mt9m111 sensor core registers\n");
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value[1] = MT9M111_SENSOR_CORE;
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m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
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for (address = 0; address < 0xff; address++) {
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m5602_read_sensor(sd, address, value, 2);
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pr_info("register 0x%x contains 0x%x%x\n",
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address, value[0], value[1]);
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}
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pr_info("Dumping the mt9m111 color pipeline registers\n");
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value[1] = MT9M111_COLORPIPE;
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m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
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for (address = 0; address < 0xff; address++) {
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m5602_read_sensor(sd, address, value, 2);
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pr_info("register 0x%x contains 0x%x%x\n",
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address, value[0], value[1]);
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}
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pr_info("Dumping the mt9m111 camera control registers\n");
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value[1] = MT9M111_CAMERA_CONTROL;
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m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
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for (address = 0; address < 0xff; address++) {
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m5602_read_sensor(sd, address, value, 2);
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pr_info("register 0x%x contains 0x%x%x\n",
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address, value[0], value[1]);
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}
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pr_info("mt9m111 register state dump complete\n");
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}
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