diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/thinkpad-acpi.txt | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/Documentation/thinkpad-acpi.txt b/Documentation/thinkpad-acpi.txt index f877c13c5ef8..bb1c7a60b9bb 100644 --- a/Documentation/thinkpad-acpi.txt +++ b/Documentation/thinkpad-acpi.txt | |||
| @@ -942,11 +942,15 @@ and CMOS. The driver tries to autodetect which interface to use. | |||
| 942 | 942 | ||
| 943 | When display backlight brightness controls are available through the | 943 | When display backlight brightness controls are available through the |
| 944 | standard ACPI interface, it is best to use it instead of this direct | 944 | standard ACPI interface, it is best to use it instead of this direct |
| 945 | ThinkPad-specific interface. | 945 | ThinkPad-specific interface. The driver will disable its native |
| 946 | backlight brightness control interface if it detects that the standard | ||
| 947 | ACPI interface is available in the ThinkPad. | ||
| 946 | 948 | ||
| 947 | The brightness_enable module parameter can be used to control whether | 949 | The brightness_enable module parameter can be used to control whether |
| 948 | the LCD brightness control feature will be enabled when available. | 950 | the LCD brightness control feature will be enabled when available. |
| 949 | brightness_enable=0 forces it to be disabled. | 951 | brightness_enable=0 forces it to be disabled. brightness_enable=1 |
| 952 | forces it to be enabled when available, even if the standard ACPI | ||
| 953 | interface is also available. | ||
| 950 | 954 | ||
| 951 | Procfs notes: | 955 | Procfs notes: |
| 952 | 956 | ||