/*
* Driver for the mt9m111 sensor
*
* Copyright (C) 2008 Erik Andrén
* Copyright (C) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project.
* Copyright (C) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br>
*
* Portions of code to USB interface and ALi driver software,
* Copyright (c) 2006 Willem Duinker
* v4l2 interface modeled after the V4L2 driver
* for SN9C10x PC Camera Controllers
*
* 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, version 2.
*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include "m5602_mt9m111.h"
static int mt9m111_s_ctrl(struct v4l2_ctrl *ctrl);
static void mt9m111_dump_registers(struct sd *sd);
static struct v4l2_pix_format mt9m111_modes[] = {
{
640,
480,
V4L2_PIX_FMT_SBGGR8,
V4L2_FIELD_NONE,
.sizeimage = 640 * 480,
.bytesperline = 640,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 0
}
};
static const struct v4l2_ctrl_ops mt9m111_ctrl_ops = {
.s_ctrl = mt9m111_s_ctrl,
};
static const struct v4l2_ctrl_config mt9m111_greenbal_cfg = {
.ops = &mt9m111_ctrl_ops,
.id = M5602_V4L2_CID_GREEN_BALANCE,
.name = "Green Balance",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 0,
.max = 0x7ff,
.step = 1,
.def = MT9M111_GREEN_GAIN_DEFAULT,
.flags = V4L2_CTRL_FLAG_SLIDER,
};
int mt9m111_probe(struct sd *sd)
{
u8 data[2] = {0x00, 0x00};
int i;
struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
if (force_sensor) {
if (force_sensor == MT9M111_SENSOR) {
pr_info("Forcing a %s sensor\n", mt9m111.name);
goto sensor_found;
}
/* If we want to force another sensor, don't try to probe this
* one */
return -ENODEV;
}
PDEBUG(D_PROBE, "Probing for a mt9m111 sensor");
/* Do the preinit */
for (i = 0; i < ARRAY_SIZE(preinit_mt9m111); i++) {
if (preinit_mt9m111[i][0] == BRIDGE) {
m5602_write_bridge(sd,
preinit_mt9m111[i][1],
preinit_mt9m111[i][2]);
} else {
data[0] = preinit_mt9m111[i][2];
data[1] = preinit_mt9m111[i][3];
m5602_write_sensor(sd,
preinit_mt9m111[i][1], data, 2);
}
}
if (m5602_read_sensor(sd, MT9M111_SC_CHIPVER, data, 2))
return -ENODEV;
if ((data[0] == 0x14) && (data[1] == 0x3a)) {
pr_info("Detected a mt9m111 sensor\n");
goto sensor_found;
}
return -ENODEV;
sensor_found:
sd->gspca_dev.cam.cam_mode = mt9m111_modes;
sd->gspca_dev.cam.nmodes = ARRAY_SIZE(mt9m111_modes);
return 0;
}
int mt9m111_init(struct sd *sd)
{
int i, err = 0;
/* Init the sensor */
for (i = 0; i < ARRAY_SIZE(init_mt9m111) && !err; i++) {
u8 data[2];
if (init_mt9m111[i][0] == BRIDGE) {
err = m5602_write_bridge(sd,
init_mt9m111[i][1],
init_mt9m111[i][2]);
} else {
data[0] = init_mt9m111[i][2];
data[1] = init_mt9m111[i][3];
err = m5602_write_sensor(sd,
init_mt9m111[i][1], data, 2);
}
}
if (dump_sensor)
mt9m111_dump_registers(sd);
return 0;
}
int mt9m111_init_controls(struct sd *sd)
{
struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;
sd->gspca_dev.vdev.ctrl_handler = hdl;
v4l2_ctrl_handler_init(hdl, 7);
sd->auto_white_bal = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops,
V4L2_CID_AUTO_WHITE_BALANCE,
0, 1, 1, 0);
sd->green_bal = v4l2_ctrl_new_custom(hdl, &mt9m111_greenbal_cfg, NULL);
sd->red_bal = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops,
V4L2_CID_RED_BALANCE, 0, 0x7ff, 1,
MT9M111_RED_GAIN_DEFAULT);
sd->blue_bal = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops,
V4L2_CID_BLUE_BALANCE, 0, 0x7ff, 1,
MT9M111_BLUE_GAIN_DEFAULT);
v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops, V4L2_CID_GAIN, 0,
(INITIAL_MAX_GAIN - 1) * 2 * 2 * 2, 1,
MT9M111_DEFAULT_GAIN);
sd->hflip = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops, V4L2_CID_HFLIP,
0, 1, 1, 0);
sd->vflip = v4l2_ctrl_new_std(hdl, &mt9m111_ctrl_ops, V4L2_CID_VFLIP,
0, 1, 1, 0);
if (hdl->error) {
pr_err("Could not initialize controls\n");
return hdl->error;
}
v4l2_ctrl_auto_cluster(4, &sd->auto_white_bal, 0, false);
v4l2_ctrl_cluster(2, &sd->hflip);
return 0;
}
int mt9m111_start(struct sd *sd)
{
int i, err = 0;
u8 data[2];
struct cam *cam = &sd->gspca_dev.cam;
struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
int width = cam->cam_mode[sd->gspca_dev.curr_mode].width - 1;
int height = cam->cam_mode[sd->gspca_dev.curr_mode].height;
for (i = 0; i < ARRAY_SIZE(start_mt9m111) && !err; i++) {
if (start_mt9m111[i][0] == BRIDGE) {
err = m5602_write_bridge(sd,
start_mt9m111[i][1],
start_mt9m111[i][2]);
} else {
data[0] = start_mt9m111[i][2];
data[1] = start_mt9m111[i][3];
err = m5602_write_sensor(sd,
start_mt9m111[i][1], data, 2);
}
}
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff);
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff));
if (err < 0)
return err;
for (i = 0; i < 2 && !err; i++)
err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 2);
if (err < 0)
return err;
for (i = 0; i < 2 && !err; i++)
err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, 0);
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA,
(width >> 8) & 0xff);
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, width & 0xff);
if (err < 0)
return err;
err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
if (err < 0)
return err;
switch (width) {
case 640:
PDEBUG(D_CONF, "Configuring camera for VGA mode");
break;
case 320:
PDEBUG(D_CONF, "Configuring camera for QVGA mode");
break;
}
return err;
}
void mt9m111_disconnect(struct sd *sd)
{
sd->sensor = NULL;
}
static int mt9m111_set_hvflip(struct gspca_dev *gspca_dev)
{
int err;
u8 data[2] = {0x00, 0x00};
struct sd *sd = (struct sd *) gspca_dev;
int hflip;
int vflip;
PDEBUG(D_CONF, "Set hvflip to %d %d", sd->hflip->val, sd->vflip->val);
/* The mt9m111 is flipped by default */
hflip = !sd->hflip->val;
vflip = !sd->vflip->val;
/* Set the correct page map */
err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
if (err < 0)
return err;
data[0] = MT9M111_RMB_OVER_SIZED;
if (gspca_dev->pixfmt.width == 640) {
data[1] = MT9M111_RMB_ROW_SKIP_2X |
MT9M111_RMB_COLUMN_SKIP_2X |
(hflip << 1) | vflip;
} else {
data[1] = MT9M111_RMB_ROW_SKIP_4X |
MT9M111_RMB_COLUMN_SKIP_4X |
(hflip << 1) | vflip;
}
err = m5602_write_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
data, 2);
return err;
}
static int mt9m111_set_auto_white_balance(struct gspca_dev *gspca_dev,
__s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
int err;
u8 data[2];
err = m5602_read_sensor(sd, MT9M111_CP_OPERATING_MODE_CTL, data, 2);
if (err < 0)
return err;
data[1] = ((data[1] & 0xfd) | ((val & 0x01) << 1));
err = m5602_write_sensor(sd, MT9M111_CP_OPERATING_MODE_CTL, data, 2);
PDEBUG(D_CONF, "Set auto white balance %d", val);
return err;
}
static int mt9m111_set_gain(struct gspca_dev *gspca_dev, __s32 val)
{
int err, tmp;
u8 data[2] = {0x00, 0x00};
struct sd *sd = (struct sd *) gspca_dev;
/* Set the correct page map */
err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
if (err < 0)
return err;
if (val >= INITIAL_MAX_GAIN * 2 * 2 * 2)
return -EINVAL;
if ((val >= INITIAL_MAX_GAIN * 2 * 2) &&
(val < (INITIAL_MAX_GAIN - 1) * 2 * 2 * 2))
tmp = (1 << 10) | (val << 9) |
(val << 8) | (val / 8);
else if ((val >= INITIAL_MAX_GAIN * 2) &&
(val < INITIAL_MAX_GAIN * 2 * 2))
tmp = (1 << 9) | (1 << 8) | (val / 4);
else if ((val >= INITIAL_MAX_GAIN) &&
(val < INITIAL_MAX_GAIN * 2))
tmp = (1 << 8) | (val / 2);
else
tmp = val;
data[1] = (tmp & 0xff);
data[0] = (tmp & 0xff00) >> 8;
PDEBUG(D_CONF, "tmp=%d, data[1]=%d, data[0]=%d", tmp,
data[1], data[0]);
err = m5602_write_sensor(sd, MT9M111_SC_GLOBAL_GAIN,
data, 2);
return err;
}
static int mt9m111_set_green_balance(struct gspca_dev *gspca_dev, __s32 val)
{
int err;
u8 data[2];
struct sd *sd = (struct sd *) gspca_dev;
data[1] = (val & 0xff);
data[0] = (val & 0xff00) >> 8;
PDEBUG(D_CONF, "Set green balance %d", val);
err = m5602_write_sensor(sd, MT9M111_SC_GREEN_1_GAIN,
data, 2);
if (err < 0)
return err;
return m5602_write_sensor(sd, MT9M111_SC_GREEN_2_GAIN,
data, 2);
}
static int mt9m111_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
{
u8 data[2];
struct sd *sd = (struct sd *) gspca_dev;
data[1] = (val & 0xff);
data[0] = (val & 0xff00) >> 8;
PDEBUG(D_CONF, "Set blue balance %d", val);
return m5602_write_sensor(sd, MT9M111_SC_BLUE_GAIN,
data, 2);
}
static int mt9m111_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
{
u8 data[2];
struct sd *sd = (struct sd *) gspca_dev;
data[1] = (val & 0xff);
data[0] = (val & 0xff00) >> 8;
PDEBUG(D_CONF, "Set red balance %d", val);
return m5602_write_sensor(sd, MT9M111_SC_RED_GAIN,
data, 2);
}
static int mt9m111_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct gspca_dev *gspca_dev =
container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
struct sd *sd = (struct sd *) gspca_dev;
int err;
if (!gspca_dev->streaming)
return 0;
switch (ctrl->id) {
case V4L2_CID_AUTO_WHITE_BALANCE:
err = mt9m111_set_auto_white_balance(gspca_dev, ctrl->val);
if (err || ctrl->val)
return err;
err = mt9m111_set_green_balance(gspca_dev, sd->green_bal->val);
if (err)
return err;
err = mt9m111_set_red_balance(gspca_dev, sd->red_bal->val);
if (err)
return err;
err = mt9m111_set_blue_balance(gspca_dev, sd->blue_bal->val);
break;
case V4L2_CID_GAIN:
err = mt9m111_set_gain(gspca_dev, ctrl->val);
break;
case V4L2_CID_HFLIP:
err = mt9m111_set_hvflip(gspca_dev);
break;
default:
return -EINVAL;
}
return err;
}
static void mt9m111_dump_registers(struct sd *sd)
{
u8 address, value[2] = {0x00, 0x00};
pr_info("Dumping the mt9m111 register state\n");
pr_info("Dumping the mt9m111 sensor core registers\n");
value[1] = MT9M111_SENSOR_CORE;
m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
for (address = 0; address < 0xff; address++) {
m5602_read_sensor(sd, address, value, 2);
pr_info("register 0x%x contains 0x%x%x\n",
address, value[0], value[1]);
}
pr_info("Dumping the mt9m111 color pipeline registers\n");
value[1] = MT9M111_COLORPIPE;
m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
for (address = 0; address < 0xff; address++) {
m5602_read_sensor(sd, address, value, 2);
pr_info("register 0x%x contains 0x%x%x\n",
address, value[0], value[1]);
}
pr_info("Dumping the mt9m111 camera control registers\n");
value[1] = MT9M111_CAMERA_CONTROL;
m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
for (address = 0; address < 0xff; address++) {
m5602_read_sensor(sd, address, value, 2);
pr_info("register 0x%x contains 0x%x%x\n",
address, value[0], value[1]);
}
pr_info("mt9m111 register state dump complete\n");
}