diff options
Diffstat (limited to 'Documentation/usb')
| -rw-r--r-- | Documentation/usb/sn9c102.txt | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Documentation/usb/sn9c102.txt b/Documentation/usb/sn9c102.txt index 541b17fd27f..c6b76414172 100644 --- a/Documentation/usb/sn9c102.txt +++ b/Documentation/usb/sn9c102.txt @@ -111,6 +111,12 @@ corresponding modules must be compiled: # CONFIG_VIDEO_DEV=m +To enable advanced debugging functionality on the device through /sysfs: + + # Multimedia devices + # + CONFIG_VIDEO_ADV_DEBUG=y + # USB support # CONFIG_USB=m @@ -208,7 +214,8 @@ Default: 2 8. Optional device control through "sysfs" [1] ========================================== -It is possible to read and write both the SN9C10x and the image sensor +If the kernel has been compiled with the CONFIG_VIDEO_ADV_DEBUG option enabled, +it is possible to read and write both the SN9C10x and the image sensor registers by using the "sysfs" filesystem interface. Every time a supported device is recognized, a write-only file named "green" is |