| What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/operation_mode |
| Date: March 2010 |
| Contact: Bruno Prémont <bonbons@linux-vserver.org> |
| Description: Make it possible to switch the PicoLCD device between LCD |
| (firmware) and bootloader (flasher) operation modes. |
| |
| Reading: returns list of available modes, the active mode being |
| enclosed in brackets ('[' and ']') |
| |
| Writing: causes operation mode switch. Permitted values are |
| the non-active mode names listed when read. |
| |
| Note: when switching mode the current PicoLCD HID device gets |
| disconnected and reconnects after above delay (see attribute |
| operation_mode_delay for its value). |
| |
| |
| What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/operation_mode_delay |
| Date: April 2010 |
| Contact: Bruno Prémont <bonbons@linux-vserver.org> |
| Description: Delay PicoLCD waits before restarting in new mode when |
| operation_mode has changed. |
| |
| Reading/Writing: It is expressed in ms and permitted range is |
| 0..30000ms. |
| |
| |
| What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/fb_update_rate |
| Date: March 2010 |
| Contact: Bruno Prémont <bonbons@linux-vserver.org> |
| Description: Make it possible to adjust defio refresh rate. |
| |
| Reading: returns list of available refresh rates (expressed in Hz), |
| the active refresh rate being enclosed in brackets ('[' and ']') |
| |
| Writing: accepts new refresh rate expressed in integer Hz |
| within permitted rates. |
| |
| Note: As device can barely do 2 complete refreshes a second |
| it only makes sense to adjust this value if only one or two |
| tiles get changed and it's not appropriate to expect the application |
| to flush its tiny changes explicitly at higher than default rate. |
| |
