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/*
* 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.
*
*/
#include "m5602_mt9m111.h"
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
}
};
const static struct ctrl mt9m111_ctrls[] = {
#define VFLIP_IDX 0
{
{
.id = V4L2_CID_VFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "vertical flip",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0
},
.set = mt9m111_set_vflip,
.get = mt9m111_get_vflip
},
#define HFLIP_IDX 1
{
{
.id = V4L2_CID_HFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "horizontal flip",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0
},
.set = mt9m111_set_hflip,
.get = mt9m111_get_hflip
},
#define GAIN_IDX 2
{
{
.id = V4L2_CID_GAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "gain",
.minimum = 0,
.maximum = (INITIAL_MAX_GAIN - 1) * 2 * 2 * 2,
.step = 1,
.default_value = DEFAULT_GAIN,
.flags = V4L2_CTRL_FLAG_SLIDER
},
.set = mt9m111_set_gain,
.get = mt9m111_get_gain
}
};
static void mt9m111_dump_registers(struct sd *sd);
int mt9m111_probe(struct sd *sd)
{
u8 data[2] = {0x00, 0x00};
int i;
s32 *sensor_settings;
if (force_sensor) {
if (force_sensor == MT9M111_SENSOR) {
info("Forcing a %s sensor", mt9m111.name);
goto sensor_found;
}
/* If we want to force another sensor, don't try to probe this
* one */
return -ENODEV;
}
info("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)) {
info("Detected a mt9m111 sensor");
goto sensor_found;
}
return -ENODEV;
sensor_found:
sensor_settings = kmalloc(ARRAY_SIZE(mt9m111_ctrls) * sizeof(s32), GFP_KERNEL);
if (!sensor_settings)
return -ENOMEM;
sd->gspca_dev.cam.cam_mode = mt9m111_modes;
sd->gspca_dev.cam.nmodes = ARRAY_SIZE(mt9m111_modes);
sd->desc->ctrls = mt9m111_ctrls;
sd->desc->nctrls = ARRAY_SIZE(mt9m111_ctrls);
for (i = 0; i < ARRAY_SIZE(mt9m111_ctrls); i++)
sensor_settings[i] = mt9m111_ctrls[i].qctrl.default_value;
sd->sensor_priv = sensor_settings;
if (dump_sensor)
mt9m111_dump_registers(sd);
return 0;
}
int mt9m111_init(struct sd *sd)
{
int i, err = 0;
s32 *sensor_settings = sd->sensor_priv;
/* 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);
}
}
err = mt9m111_set_vflip(&sd->gspca_dev, sensor_settings[VFLIP_IDX]);
if (err < 0)
return err;
err = mt9m111_set_hflip(&sd->gspca_dev, sensor_settings[HFLIP_IDX]);
if (err < 0)
return err;
err = mt9m111_set_gain(&sd->gspca_dev, sensor_settings[GAIN_IDX]);
return err;
}
void mt9m111_disconnect(struct sd *sd)
{
sd->sensor = NULL;
kfree(sd->sensor_priv);
}
int mt9m111_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
*val = sensor_settings[VFLIP_IDX];
PDEBUG(D_V4L2, "Read vertical flip %d", *val);
return 0;
}
int mt9m111_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
{
int err;
u8 data[2] = {0x00, 0x00};
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
PDEBUG(D_V4L2, "Set vertical flip to %d", val);
sensor_settings[VFLIP_IDX] = val;
/* Set the correct page map */
err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
if (err < 0)
return err;
err = m5602_read_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B, data, 2);
if (err < 0)
return err;
data[0] = (data[0] & 0xfe) | val;
err = m5602_write_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
data, 2);
return err;
}
int mt9m111_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
*val = sensor_settings[HFLIP_IDX];
PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
return 0;
}
int mt9m111_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
{
int err;
u8 data[2] = {0x00, 0x00};
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
sensor_settings[HFLIP_IDX] = val;
/* Set the correct page map */
err = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
if (err < 0)
return err;
err = m5602_read_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B, data, 2);
if (err < 0)
return err;
data[0] = (data[0] & 0xfd) | ((val << 1) & 0x02);
err = m5602_write_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
data, 2);
return err;
}
int mt9m111_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
*val = sensor_settings[GAIN_IDX];
PDEBUG(D_V4L2, "Read gain %d", *val);
return 0;
}
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;
s32 *sensor_settings = sd->sensor_priv;
sensor_settings[GAIN_IDX] = val;
/* 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 & 0xff00) >> 8;
data[0] = (tmp & 0xff);
PDEBUG(D_V4L2, "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 void mt9m111_dump_registers(struct sd *sd)
{
u8 address, value[2] = {0x00, 0x00};
info("Dumping the mt9m111 register state");
info("Dumping the mt9m111 sensor core registers");
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);
info("register 0x%x contains 0x%x%x",
address, value[0], value[1]);
}
info("Dumping the mt9m111 color pipeline registers");
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);
info("register 0x%x contains 0x%x%x",
address, value[0], value[1]);
}
info("Dumping the mt9m111 camera control registers");
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);
info("register 0x%x contains 0x%x%x",
address, value[0], value[1]);
}
info("mt9m111 register state dump complete");
}
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