+===============================================
Driver documentation for yealink usb-p1k phones
+===============================================
+
+Status
+======
-0. Status
-~~~~~~~~~
The p1k is a relatively cheap usb 1.1 phone with:
+
- keyboard full support, yealink.ko / input event API
- LCD full support, yealink.ko / sysfs API
- LED full support, yealink.ko / sysfs API
For vendor documentation see http://www.yealink.com
-1. Compilation (stand alone version)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Compilation (stand alone version)
+=================================
+
Currently only kernel 2.6.x.y versions are supported.
-In order to build the yealink.ko module do
+In order to build the yealink.ko module do::
make
are located, default /usr/src/linux.
-1.1 Troubleshooting
-~~~~~~~~~~~~~~~~~~~
-Q: Module yealink compiled and installed without any problem but phone
- is not initialized and does not react to any actions.
-A: If you see something like:
- hiddev0: USB HID v1.00 Device [Yealink Network Technology Ltd. VOIP USB Phone
- in dmesg, it means that the hid driver has grabbed the device first. Try to
- load module yealink before any other usb hid driver. Please see the
- instructions provided by your distribution on module configuration.
+Troubleshooting
+~~~~~~~~~~~~~~~
+
+:Q: Module yealink compiled and installed without any problem but phone
+ is not initialized and does not react to any actions.
+:A: If you see something like:
+ hiddev0: USB HID v1.00 Device [Yealink Network Technology Ltd. VOIP USB Phone
+ in dmesg, it means that the hid driver has grabbed the device first. Try to
+ load module yealink before any other usb hid driver. Please see the
+ instructions provided by your distribution on module configuration.
-Q: Phone is working now (displays version and accepts keypad input) but I can't
- find the sysfs files.
-A: The sysfs files are located on the particular usb endpoint. On most
- distributions you can do: "find /sys/ -name get_icons" for a hint.
+:Q: Phone is working now (displays version and accepts keypad input) but I can't
+ find the sysfs files.
+:A: The sysfs files are located on the particular usb endpoint. On most
+ distributions you can do: "find /sys/ -name get_icons" for a hint.
-2. keyboard features
-~~~~~~~~~~~~~~~~~~~~
+keyboard features
+=================
+
The current mapping in the kernel is provided by the map_p1k_to_key
-function:
+function::
Physical USB-P1K button layout input events
7 8 9 7, 8, 9,
* 0 # *, 0, #,
- The "up" and "down" keys, are symbolised by arrows on the button.
- The "pickup" and "hangup" keys are symbolised by a green and red phone
- on the button.
+The "up" and "down" keys, are symbolised by arrows on the button.
+The "pickup" and "hangup" keys are symbolised by a green and red phone
+on the button.
-3. LCD features
-~~~~~~~~~~~~~~~
-The LCD is divided and organised as a 3 line display:
+LCD features
+============
+
+The LCD is divided and organised as a 3 line display::
|[] [][] [][] [][] in |[][]
|[] M [][] D [][] : [][] out |[][]
[] [] [] [] [] [] [] [] [] [] [] []
-Line 1 Format (see below) : 18.e8.M8.88...188
- Icon names : M D : IN OUT STORE
-Line 2 Format : .........
- Icon name : NEW REP SU MO TU WE TH FR SA
-Line 3 Format : 888888888888
+ Line 1 Format (see below) : 18.e8.M8.88...188
+ Icon names : M D : IN OUT STORE
+ Line 2 Format : .........
+ Icon name : NEW REP SU MO TU WE TH FR SA
+ Line 3 Format : 888888888888
Format description:
From a userspace perspective the world is separated into "digits" and "icons".
A digit can have a character set, an icon can only be ON or OFF.
- Format specifier
+ Format specifier::
+
'8' : Generic 7 segment digit with individual addressable segments
Reduced capability 7 segment digit, when segments are hard wired together.
elements.
-4. Driver usage
-~~~~~~~~~~~~~~~
-For userland the following interfaces are available using the sysfs interface:
+Driver usage
+============
+
+For userland the following interfaces are available using the sysfs interface::
+
/sys/.../
line1 Read/Write, lcd line1
line2 Read/Write, lcd line2
show_icon Write, display the element by writing the icon name.
map_seg7 Read/Write, the 7 segments char set, common for all
- yealink phones. (see map_to_7segment.h)
+ yealink phones. (see map_to_7segment.h)
ringtone Write, upload binary representation of a ringtone,
- see yealink.c. status EXPERIMENTAL due to potential
+ see yealink.c. status EXPERIMENTAL due to potential
races between async. and sync usb calls.
-4.1 lineX
-~~~~~~~~~
-Reading /sys/../lineX will return the format string with its current value:
+lineX
+~~~~~
+
+Reading /sys/../lineX will return the format string with its current value.
- Example:
- cat ./line3
- 888888888888
- Linux Rocks!
+ Example::
+
+ cat ./line3
+ 888888888888
+ Linux Rocks!
Writing to /sys/../lineX will set the corresponding LCD line.
+
- Excess characters are ignored.
- If less characters are written than allowed, the remaining digits are
unchanged.
- The tab '\t'and '\n' char does not overwrite the original content.
- Writing a space to an icon will always hide its content.
- Example:
- date +"%m.%e.%k:%M" | sed 's/^0/ /' > ./line1
+ Example::
+
+ date +"%m.%e.%k:%M" | sed 's/^0/ /' > ./line1
Will update the LCD with the current date & time.
-4.2 get_icons
-~~~~~~~~~~~~~
-Reading will return all available icon names and its current settings:
+get_icons
+~~~~~~~~~
+
+Reading will return all available icon names and its current settings::
cat ./get_icons
on M
RINGTONE
-4.3 show/hide icons
-~~~~~~~~~~~~~~~~~~~
+show/hide icons
+~~~~~~~~~~~~~~~
+
Writing to these files will update the state of the icon.
Only one icon at a time can be updated.
If an icon is also on a ./lineX the corresponding value is
updated with the first letter of the icon.
- Example - light up the store icon:
- echo -n "STORE" > ./show_icon
+ Example - light up the store icon::
- cat ./line1
- 18.e8.M8.88...188
- S
+ echo -n "STORE" > ./show_icon
- Example - sound the ringtone for 10 seconds:
- echo -n RINGTONE > /sys/..../show_icon
- sleep 10
- echo -n RINGTONE > /sys/..../hide_icon
+ cat ./line1
+ 18.e8.M8.88...188
+ S
+ Example - sound the ringtone for 10 seconds::
+
+ echo -n RINGTONE > /sys/..../show_icon
+ sleep 10
+ echo -n RINGTONE > /sys/..../hide_icon
+
+
+Sound features
+==============
-5. Sound features
-~~~~~~~~~~~~~~~~~
Sound is supported by the ALSA driver: snd_usb_audio
One 16-bit channel with sample and playback rates of 8000 Hz is the practical
limit of the device.
- Example - recording test:
- arecord -v -d 10 -r 8000 -f S16_LE -t wav foobar.wav
+ Example - recording test::
+
+ arecord -v -d 10 -r 8000 -f S16_LE -t wav foobar.wav
- Example - playback test:
- aplay foobar.wav
+ Example - playback test::
+ aplay foobar.wav
+
+
+Credits & Acknowledgments
+=========================
-6. Credits & Acknowledgments
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- Olivier Vandorpe, for starting the usbb2k-api project doing much of
- the reverse engineering.
+ the reverse engineering.
- Martin Diehl, for pointing out how to handle USB memory allocation.
- Dmitry Torokhov, for the numerous code reviews and suggestions.
-
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff