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;
|
|
}
|