| What: /sys/class/backlight/<backlight>/<ambient light zone>_max |
| What: /sys/class/backlight/<backlight>/l1_daylight_max |
| What: /sys/class/backlight/<backlight>/l2_bright_max |
| What: /sys/class/backlight/<backlight>/l3_office_max |
| What: /sys/class/backlight/<backlight>/l4_indoor_max |
| What: /sys/class/backlight/<backlight>/l5_dark_max |
| Date: May 2011 |
| KernelVersion: 3.0 |
| Contact: device-drivers-devel@blackfin.uclinux.org |
| Description: |
| Control the maximum brightness for <ambient light zone> |
| on this <backlight>. Values are between 0 and 127. This file |
| will also show the brightness level stored for this |
| <ambient light zone>. |
| |
| What: /sys/class/backlight/<backlight>/<ambient light zone>_dim |
| What: /sys/class/backlight/<backlight>/l2_bright_dim |
| What: /sys/class/backlight/<backlight>/l3_office_dim |
| What: /sys/class/backlight/<backlight>/l4_indoor_dim |
| What: /sys/class/backlight/<backlight>/l5_dark_dim |
| Date: May 2011 |
| KernelVersion: 3.0 |
| Contact: device-drivers-devel@blackfin.uclinux.org |
| Description: |
| Control the dim brightness for <ambient light zone> |
| on this <backlight>. Values are between 0 and 127, typically |
| set to 0. Full off when the backlight is disabled. |
| This file will also show the dim brightness level stored for |
| this <ambient light zone>. |
| |
| What: /sys/class/backlight/<backlight>/ambient_light_level |
| Date: May 2011 |
| KernelVersion: 3.0 |
| Contact: device-drivers-devel@blackfin.uclinux.org |
| Description: |
| Get conversion value of the light sensor. |
| This value is updated every 80 ms (when the light sensor |
| is enabled). Returns integer between 0 (dark) and |
| 8000 (max ambient brightness) |
| |
| What: /sys/class/backlight/<backlight>/ambient_light_zone |
| Date: May 2011 |
| KernelVersion: 3.0 |
| Contact: device-drivers-devel@blackfin.uclinux.org |
| Description: |
| Get/Set current ambient light zone. Reading returns |
| integer between 1..5 (1 = daylight, 2 = bright, ..., 5 = dark). |
| Writing a value between 1..5 forces the backlight controller |
| to enter the corresponding ambient light zone. |
| Writing 0 returns to normal/automatic ambient light level |
| operation. The ambient light sensing feature on these devices |
| is an extension to the API documented in |
| Documentation/ABI/stable/sysfs-class-backlight. |
| It can be enabled by writing the value stored in |
| /sys/class/backlight/<backlight>/max_brightness to |
| /sys/class/backlight/<backlight>/brightness. |