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path: root/drivers/media/usb/em28xx/em28xx-camera.c
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Diffstat (limited to 'drivers/media/usb/em28xx/em28xx-camera.c')
-rw-r--r--drivers/media/usb/em28xx/em28xx-camera.c42
1 files changed, 32 insertions, 10 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-camera.c b/drivers/media/usb/em28xx/em28xx-camera.c
index 73cc50afa5e1..d666741797d4 100644
--- a/drivers/media/usb/em28xx/em28xx-camera.c
+++ b/drivers/media/usb/em28xx/em28xx-camera.c
@@ -22,6 +22,7 @@
#include <linux/i2c.h>
#include <media/soc_camera.h>
#include <media/mt9v011.h>
+#include <media/v4l2-clk.h>
#include <media/v4l2-common.h>
#include "em28xx.h"
@@ -47,6 +48,7 @@ static struct soc_camera_link camlink = {
.bus_id = 0,
.flags = 0,
.module_name = "em28xx",
+ .unbalanced_power = true,
};
@@ -325,13 +327,24 @@ int em28xx_detect_sensor(struct em28xx *dev)
int em28xx_init_camera(struct em28xx *dev)
{
+ char clk_name[V4L2_SUBDEV_NAME_SIZE];
+ struct i2c_client *client = &dev->i2c_client[dev->def_i2c_bus];
+ struct i2c_adapter *adap = &dev->i2c_adap[dev->def_i2c_bus];
+ int ret = 0;
+
+ v4l2_clk_name_i2c(clk_name, sizeof(clk_name),
+ i2c_adapter_id(adap), client->addr);
+ dev->clk = v4l2_clk_register_fixed(clk_name, "mclk", -EINVAL);
+ if (IS_ERR(dev->clk))
+ return PTR_ERR(dev->clk);
+
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,
+ .addr = client->addr,
.platform_data = &pdata,
};
@@ -352,10 +365,11 @@ int em28xx_init_camera(struct em28xx *dev)
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;
+ v4l2_i2c_new_subdev_board(&dev->v4l2_dev, adap,
+ &mt9v011_info, NULL)) {
+ ret = -ENODEV;
+ break;
+ }
/* probably means GRGB 16 bit bayer */
dev->vinmode = 0x0d;
dev->vinctl = 0x00;
@@ -391,7 +405,7 @@ int em28xx_init_camera(struct em28xx *dev)
struct i2c_board_info ov2640_info = {
.type = "ov2640",
.flags = I2C_CLIENT_SCCB,
- .addr = dev->i2c_client[dev->def_i2c_bus].addr,
+ .addr = client->addr,
.platform_data = &camlink,
};
struct v4l2_mbus_framefmt fmt;
@@ -408,9 +422,12 @@ int em28xx_init_camera(struct em28xx *dev)
dev->sensor_yres = 480;
subdev =
- v4l2_i2c_new_subdev_board(&dev->v4l2_dev,
- &dev->i2c_adap[dev->def_i2c_bus],
+ v4l2_i2c_new_subdev_board(&dev->v4l2_dev, adap,
&ov2640_info, NULL);
+ if (NULL == subdev) {
+ ret = -ENODEV;
+ break;
+ }
fmt.code = V4L2_MBUS_FMT_YUYV8_2X8;
fmt.width = 640;
@@ -427,8 +444,13 @@ int em28xx_init_camera(struct em28xx *dev)
}
case EM28XX_NOSENSOR:
default:
- return -EINVAL;
+ ret = -EINVAL;
}
- return 0;
+ if (ret < 0) {
+ v4l2_clk_unregister_fixed(dev->clk);
+ dev->clk = NULL;
+ }
+
+ return ret;
}