1What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/operation_mode 2Date: March 2010 3Contact: Bruno Prémont <bonbons@linux-vserver.org> 4Description: Make it possible to switch the PicoLCD device between LCD 5 (firmware) and bootloader (flasher) operation modes. 6 7 Reading: returns list of available modes, the active mode being 8 enclosed in brackets ('[' and ']') 9 10 Writing: causes operation mode switch. Permitted values are 11 the non-active mode names listed when read, optionally followed 12 by a delay value expressed in ms. 13 14 Note: when switching mode the current PicoLCD HID device gets 15 disconnected and reconnects after above delay (default value 16 is 5 seconds though this default should not be relied on). 17 18 19What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/fb_update_rate 20Date: March 2010 21Contact: Bruno Prémont <bonbons@linux-vserver.org> 22Description: Make it possible to adjust defio refresh rate. 23 24 Reading: returns list of available refresh rates (expressed in Hz), 25 the active refresh rate being enclosed in brackets ('[' and ']') 26 27 Writing: accepts new refresh rate expressed in integer Hz 28 within permitted rates. 29 30 Note: As device can barely do 2 complete refreshes a second 31 it only makes sense to adjust this value if only one or two 32 tiles get changed and it's not appropriate to expect the application 33 to flush it's tiny changes explicitely at higher than default rate. 34 35