forked from Minki/linux
e4b7131dd5
This sensor is used by the "SpeedLink Vicious And Devine Laplace webcam" and others. It supports resolutions up to 1600x1200 (at 7-8 fps), but for resolutions higher than 640x480, further driver changes will be necessary, such as sensor output resolution switching (including further configuration changes), bridge xclk adjustment and disabling of 16 bit (12 bit) output formats at high resolutions. Image quality should also needs to be improved. Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
435 lines
11 KiB
C
435 lines
11 KiB
C
/*
|
|
em28xx-camera.c - driver for Empia EM25xx/27xx/28xx USB video capture devices
|
|
|
|
Copyright (C) 2009 Mauro Carvalho Chehab <mchehab@infradead.org>
|
|
Copyright (C) 2013 Frank Schäfer <fschaefer.oss@googlemail.com>
|
|
|
|
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 <linux/i2c.h>
|
|
#include <media/soc_camera.h>
|
|
#include <media/mt9v011.h>
|
|
#include <media/v4l2-common.h>
|
|
|
|
#include "em28xx.h"
|
|
|
|
|
|
/* Possible i2c addresses of Micron sensors */
|
|
static unsigned short micron_sensor_addrs[] = {
|
|
0xb8 >> 1, /* MT9V111, MT9V403 */
|
|
0xba >> 1, /* MT9M001/011/111/112, MT9V011/012/112, MT9D011 */
|
|
0x90 >> 1, /* MT9V012/112, MT9D011 (alternative address) */
|
|
I2C_CLIENT_END
|
|
};
|
|
|
|
/* Possible i2c addresses of Omnivision sensors */
|
|
static unsigned short omnivision_sensor_addrs[] = {
|
|
0x42 >> 1, /* OV7725, OV7670/60/48 */
|
|
0x60 >> 1, /* OV2640, OV9650/53/55 */
|
|
I2C_CLIENT_END
|
|
};
|
|
|
|
|
|
static struct soc_camera_link camlink = {
|
|
.bus_id = 0,
|
|
.flags = 0,
|
|
.module_name = "em28xx",
|
|
};
|
|
|
|
|
|
/* FIXME: Should be replaced by a proper mt9m111 driver */
|
|
static int em28xx_initialize_mt9m111(struct em28xx *dev)
|
|
{
|
|
int i;
|
|
unsigned char regs[][3] = {
|
|
{ 0x0d, 0x00, 0x01, }, /* reset and use defaults */
|
|
{ 0x0d, 0x00, 0x00, },
|
|
{ 0x0a, 0x00, 0x21, },
|
|
{ 0x21, 0x04, 0x00, }, /* full readout speed, no row/col skipping */
|
|
};
|
|
|
|
for (i = 0; i < ARRAY_SIZE(regs); i++)
|
|
i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
|
|
®s[i][0], 3);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* FIXME: Should be replaced by a proper mt9m001 driver */
|
|
static int em28xx_initialize_mt9m001(struct em28xx *dev)
|
|
{
|
|
int i;
|
|
unsigned char regs[][3] = {
|
|
{ 0x0d, 0x00, 0x01, },
|
|
{ 0x0d, 0x00, 0x00, },
|
|
{ 0x04, 0x05, 0x00, }, /* hres = 1280 */
|
|
{ 0x03, 0x04, 0x00, }, /* vres = 1024 */
|
|
{ 0x20, 0x11, 0x00, },
|
|
{ 0x06, 0x00, 0x10, },
|
|
{ 0x2b, 0x00, 0x24, },
|
|
{ 0x2e, 0x00, 0x24, },
|
|
{ 0x35, 0x00, 0x24, },
|
|
{ 0x2d, 0x00, 0x20, },
|
|
{ 0x2c, 0x00, 0x20, },
|
|
{ 0x09, 0x0a, 0xd4, },
|
|
{ 0x35, 0x00, 0x57, },
|
|
};
|
|
|
|
for (i = 0; i < ARRAY_SIZE(regs); i++)
|
|
i2c_master_send(&dev->i2c_client[dev->def_i2c_bus],
|
|
®s[i][0], 3);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Probes Micron sensors with 8 bit address and 16 bit register width
|
|
*/
|
|
static int em28xx_probe_sensor_micron(struct em28xx *dev)
|
|
{
|
|
int ret, i;
|
|
char *name;
|
|
u8 reg;
|
|
__be16 id_be;
|
|
u16 id;
|
|
|
|
struct i2c_client client = dev->i2c_client[dev->def_i2c_bus];
|
|
|
|
dev->em28xx_sensor = EM28XX_NOSENSOR;
|
|
for (i = 0; micron_sensor_addrs[i] != I2C_CLIENT_END; i++) {
|
|
client.addr = micron_sensor_addrs[i];
|
|
/* NOTE: i2c_smbus_read_word_data() doesn't work with BE data */
|
|
/* Read chip ID from register 0x00 */
|
|
reg = 0x00;
|
|
ret = i2c_master_send(&client, ®, 1);
|
|
if (ret < 0) {
|
|
if (ret != -ENODEV)
|
|
em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
|
|
client.addr << 1, ret);
|
|
continue;
|
|
}
|
|
ret = i2c_master_recv(&client, (u8 *)&id_be, 2);
|
|
if (ret < 0) {
|
|
em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
|
|
client.addr << 1, ret);
|
|
continue;
|
|
}
|
|
id = be16_to_cpu(id_be);
|
|
/* Read chip ID from register 0xff */
|
|
reg = 0xff;
|
|
ret = i2c_master_send(&client, ®, 1);
|
|
if (ret < 0) {
|
|
em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
|
|
client.addr << 1, ret);
|
|
continue;
|
|
}
|
|
ret = i2c_master_recv(&client, (u8 *)&id_be, 2);
|
|
if (ret < 0) {
|
|
em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
|
|
client.addr << 1, ret);
|
|
continue;
|
|
}
|
|
/* Validate chip ID to be sure we have a Micron device */
|
|
if (id != be16_to_cpu(id_be))
|
|
continue;
|
|
/* Check chip ID */
|
|
id = be16_to_cpu(id_be);
|
|
switch (id) {
|
|
case 0x1222:
|
|
name = "MT9V012"; /* MI370 */ /* 640x480 */
|
|
break;
|
|
case 0x1229:
|
|
name = "MT9V112"; /* 640x480 */
|
|
break;
|
|
case 0x1433:
|
|
name = "MT9M011"; /* 1280x1024 */
|
|
break;
|
|
case 0x143a: /* found in the ECS G200 */
|
|
name = "MT9M111"; /* MI1310 */ /* 1280x1024 */
|
|
dev->em28xx_sensor = EM28XX_MT9M111;
|
|
break;
|
|
case 0x148c:
|
|
name = "MT9M112"; /* MI1320 */ /* 1280x1024 */
|
|
break;
|
|
case 0x1511:
|
|
name = "MT9D011"; /* MI2010 */ /* 1600x1200 */
|
|
break;
|
|
case 0x8232:
|
|
case 0x8243: /* rev B */
|
|
name = "MT9V011"; /* MI360 */ /* 640x480 */
|
|
dev->em28xx_sensor = EM28XX_MT9V011;
|
|
break;
|
|
case 0x8431:
|
|
name = "MT9M001"; /* 1280x1024 */
|
|
dev->em28xx_sensor = EM28XX_MT9M001;
|
|
break;
|
|
default:
|
|
em28xx_info("unknown Micron sensor detected: 0x%04x\n",
|
|
id);
|
|
return 0;
|
|
}
|
|
|
|
if (dev->em28xx_sensor == EM28XX_NOSENSOR)
|
|
em28xx_info("unsupported sensor detected: %s\n", name);
|
|
else
|
|
em28xx_info("sensor %s detected\n", name);
|
|
|
|
dev->i2c_client[dev->def_i2c_bus].addr = client.addr;
|
|
return 0;
|
|
}
|
|
|
|
return -ENODEV;
|
|
}
|
|
|
|
/*
|
|
* Probes Omnivision sensors with 8 bit address and register width
|
|
*/
|
|
static int em28xx_probe_sensor_omnivision(struct em28xx *dev)
|
|
{
|
|
int ret, i;
|
|
char *name;
|
|
u8 reg;
|
|
u16 id;
|
|
struct i2c_client client = dev->i2c_client[dev->def_i2c_bus];
|
|
|
|
dev->em28xx_sensor = EM28XX_NOSENSOR;
|
|
/* NOTE: these devices have the register auto incrementation disabled
|
|
* by default, so we have to use single byte reads ! */
|
|
for (i = 0; omnivision_sensor_addrs[i] != I2C_CLIENT_END; i++) {
|
|
client.addr = omnivision_sensor_addrs[i];
|
|
/* Read manufacturer ID from registers 0x1c-0x1d (BE) */
|
|
reg = 0x1c;
|
|
ret = i2c_smbus_read_byte_data(&client, reg);
|
|
if (ret < 0) {
|
|
if (ret != -ENODEV)
|
|
em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
|
|
client.addr << 1, ret);
|
|
continue;
|
|
}
|
|
id = ret << 8;
|
|
reg = 0x1d;
|
|
ret = i2c_smbus_read_byte_data(&client, reg);
|
|
if (ret < 0) {
|
|
em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
|
|
client.addr << 1, ret);
|
|
continue;
|
|
}
|
|
id += ret;
|
|
/* Check manufacturer ID */
|
|
if (id != 0x7fa2)
|
|
continue;
|
|
/* Read product ID from registers 0x0a-0x0b (BE) */
|
|
reg = 0x0a;
|
|
ret = i2c_smbus_read_byte_data(&client, reg);
|
|
if (ret < 0) {
|
|
em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
|
|
client.addr << 1, ret);
|
|
continue;
|
|
}
|
|
id = ret << 8;
|
|
reg = 0x0b;
|
|
ret = i2c_smbus_read_byte_data(&client, reg);
|
|
if (ret < 0) {
|
|
em28xx_errdev("couldn't read from i2c device 0x%02x: error %i\n",
|
|
client.addr << 1, ret);
|
|
continue;
|
|
}
|
|
id += ret;
|
|
/* Check product ID */
|
|
switch (id) {
|
|
case 0x2642:
|
|
name = "OV2640";
|
|
dev->em28xx_sensor = EM28XX_OV2640;
|
|
break;
|
|
case 0x7648:
|
|
name = "OV7648";
|
|
break;
|
|
case 0x7660:
|
|
name = "OV7660";
|
|
break;
|
|
case 0x7673:
|
|
name = "OV7670";
|
|
break;
|
|
case 0x7720:
|
|
name = "OV7720";
|
|
break;
|
|
case 0x7721:
|
|
name = "OV7725";
|
|
break;
|
|
case 0x9648: /* Rev 2 */
|
|
case 0x9649: /* Rev 3 */
|
|
name = "OV9640";
|
|
break;
|
|
case 0x9650:
|
|
case 0x9652: /* OV9653 */
|
|
name = "OV9650";
|
|
break;
|
|
case 0x9656: /* Rev 4 */
|
|
case 0x9657: /* Rev 5 */
|
|
name = "OV9655";
|
|
break;
|
|
default:
|
|
em28xx_info("unknown OmniVision sensor detected: 0x%04x\n",
|
|
id);
|
|
return 0;
|
|
}
|
|
|
|
if (dev->em28xx_sensor == EM28XX_NOSENSOR)
|
|
em28xx_info("unsupported sensor detected: %s\n", name);
|
|
else
|
|
em28xx_info("sensor %s detected\n", name);
|
|
|
|
dev->i2c_client[dev->def_i2c_bus].addr = client.addr;
|
|
return 0;
|
|
}
|
|
|
|
return -ENODEV;
|
|
}
|
|
|
|
int em28xx_detect_sensor(struct em28xx *dev)
|
|
{
|
|
int ret;
|
|
|
|
ret = em28xx_probe_sensor_micron(dev);
|
|
|
|
if (dev->em28xx_sensor == EM28XX_NOSENSOR && ret < 0)
|
|
ret = em28xx_probe_sensor_omnivision(dev);
|
|
|
|
/*
|
|
* NOTE: the Windows driver also probes i2c addresses
|
|
* 0x22 (Samsung ?) and 0x66 (Kodak ?)
|
|
*/
|
|
|
|
if (dev->em28xx_sensor == EM28XX_NOSENSOR && ret < 0) {
|
|
em28xx_info("No sensor detected\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int em28xx_init_camera(struct em28xx *dev)
|
|
{
|
|
switch (dev->em28xx_sensor) {
|
|
case EM28XX_MT9V011:
|
|
{
|
|
struct mt9v011_platform_data pdata;
|
|
struct i2c_board_info mt9v011_info = {
|
|
.type = "mt9v011",
|
|
.addr = dev->i2c_client[dev->def_i2c_bus].addr,
|
|
.platform_data = &pdata,
|
|
};
|
|
|
|
dev->sensor_xres = 640;
|
|
dev->sensor_yres = 480;
|
|
|
|
/*
|
|
* FIXME: mt9v011 uses I2S speed as xtal clk - at least with
|
|
* the Silvercrest cam I have here for testing - for higher
|
|
* resolutions, a high clock cause horizontal artifacts, so we
|
|
* need to use a lower xclk frequency.
|
|
* Yet, it would be possible to adjust xclk depending on the
|
|
* desired resolution, since this affects directly the
|
|
* frame rate.
|
|
*/
|
|
dev->board.xclk = EM28XX_XCLK_FREQUENCY_4_3MHZ;
|
|
em28xx_write_reg(dev, EM28XX_R0F_XCLK, dev->board.xclk);
|
|
dev->sensor_xtal = 4300000;
|
|
pdata.xtal = dev->sensor_xtal;
|
|
if (NULL ==
|
|
v4l2_i2c_new_subdev_board(&dev->v4l2_dev,
|
|
&dev->i2c_adap[dev->def_i2c_bus],
|
|
&mt9v011_info, NULL))
|
|
return -ENODEV;
|
|
/* probably means GRGB 16 bit bayer */
|
|
dev->vinmode = 0x0d;
|
|
dev->vinctl = 0x00;
|
|
|
|
break;
|
|
}
|
|
case EM28XX_MT9M001:
|
|
dev->sensor_xres = 1280;
|
|
dev->sensor_yres = 1024;
|
|
|
|
em28xx_initialize_mt9m001(dev);
|
|
|
|
/* probably means BGGR 16 bit bayer */
|
|
dev->vinmode = 0x0c;
|
|
dev->vinctl = 0x00;
|
|
|
|
break;
|
|
case EM28XX_MT9M111:
|
|
dev->sensor_xres = 640;
|
|
dev->sensor_yres = 512;
|
|
|
|
dev->board.xclk = EM28XX_XCLK_FREQUENCY_48MHZ;
|
|
em28xx_write_reg(dev, EM28XX_R0F_XCLK, dev->board.xclk);
|
|
em28xx_initialize_mt9m111(dev);
|
|
|
|
dev->vinmode = 0x0a;
|
|
dev->vinctl = 0x00;
|
|
|
|
break;
|
|
case EM28XX_OV2640:
|
|
{
|
|
struct v4l2_subdev *subdev;
|
|
struct i2c_board_info ov2640_info = {
|
|
.type = "ov2640",
|
|
.flags = I2C_CLIENT_SCCB,
|
|
.addr = dev->i2c_client[dev->def_i2c_bus].addr,
|
|
.platform_data = &camlink,
|
|
};
|
|
struct v4l2_mbus_framefmt fmt;
|
|
|
|
/*
|
|
* FIXME: sensor supports resolutions up to 1600x1200, but
|
|
* resolution setting/switching needs to be modified to
|
|
* - switch sensor output resolution (including further
|
|
* configuration changes)
|
|
* - adjust bridge xclk
|
|
* - disable 16 bit (12 bit) output formats on high resolutions
|
|
*/
|
|
dev->sensor_xres = 640;
|
|
dev->sensor_yres = 480;
|
|
|
|
subdev =
|
|
v4l2_i2c_new_subdev_board(&dev->v4l2_dev,
|
|
&dev->i2c_adap[dev->def_i2c_bus],
|
|
&ov2640_info, NULL);
|
|
|
|
fmt.code = V4L2_MBUS_FMT_YUYV8_2X8;
|
|
fmt.width = 640;
|
|
fmt.height = 480;
|
|
v4l2_subdev_call(subdev, video, s_mbus_fmt, &fmt);
|
|
|
|
/* NOTE: for UXGA=1600x1200 switch to 12MHz */
|
|
dev->board.xclk = EM28XX_XCLK_FREQUENCY_24MHZ;
|
|
em28xx_write_reg(dev, EM28XX_R0F_XCLK, dev->board.xclk);
|
|
dev->vinmode = 0x08;
|
|
dev->vinctl = 0x00;
|
|
|
|
break;
|
|
}
|
|
case EM28XX_NOSENSOR:
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|