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HID: new driver for PicoLCD device

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Add basic driver for PicoLCD graphics device.
Initially support keypad with input device and provide support
for debugging communication via events file from debugfs.

Signed-off-by: Bruno Prémont <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
This commit is contained in:
Bruno Prémont 2010-03-30 22:33:50 +02:00 • committed by Jiri Kosina
commit 236db47c2b
6 changed files with 1223 additions and 0 deletions
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17
Documentation/ABI/testing/sysfs-driver-hid-picolcd Normal file
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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 <[email protected]>
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, optionally followed
by a delay value expressed in ms.
Note: when switching mode the current PicoLCD HID device gets
disconnected and reconnects after above delay (default value
is 5 seconds though this default should not be relied on).