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