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diff --git a/Documentation/input/yealink.txt b/Documentation/input/yealink.txt new file mode 100644 index 00000000000..85f095a7ad0 --- /dev/null +++ b/Documentation/input/yealink.txt @@ -0,0 +1,203 @@ +Driver documentation for yealink usb-p1k phones + +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 + - dialtone full support, yealink.ko / sysfs API + - ringtone full support, yealink.ko / sysfs API + - audio playback full support, snd_usb_audio.ko / alsa API + - audio record full support, snd_usb_audio.ko / alsa API + +For vendor documentation see http://www.yealink.com + + +1. Compilation (stand alone version) +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Currently only kernel 2.6.x.y versions are supported. +In order to build the yealink.ko module do: + + make + +If you encounter problems please check if in the MAKE_OPTS variable in +the Makefile is pointing to the location where your kernel sources +are located, default /usr/src/linux. + + + +2. keyboard features +~~~~~~~~~~~~~~~~~~~~ +The current mapping in the kernel is provided by the map_p1k_to_key +function: + + Physical USB-P1K button layout input events + + + up up + IN OUT left, right + down down + + pickup C hangup enter, backspace, escape + 1 2 3 1, 2, 3 + 4 5 6 4, 5, 6, + 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. + + +3. LCD features +~~~~~~~~~~~~~~~ +The LCD is divided and organised as a 3 line display: + + |[] [][] [][] [][] in |[][] + |[] M [][] D [][] : [][] out |[][] + store + + NEW REP SU MO TU WE TH FR SA + + [] [] [] [] [] [] [] [] [] [] [] [] + [] [] [] [] [] [] [] [] [] [] [] [] + + +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 user space perspective the world is seperated in "digits" and "icons". + A digit can have a character set, an icon can only be ON or OFF. + + Format specifier + '8' : Generic 7 segment digit with individual addressable segments + + Reduced capabillity 7 segm digit, when segments are hard wired together. + '1' : 2 segments digit only able to produce a 1. + 'e' : Most significant day of the month digit, + able to produce at least 1 2 3. + 'M' : Most significant minute digit, + able to produce at least 0 1 2 3 4 5. + + Icons or pictograms: + '.' : For example like AM, PM, SU, a 'dot' .. or other single segment + elements. + + +4. Driver usage +~~~~~~~~~~~~~~~ +For userland the following interfaces are available using the sysfs interface: + /sys/.../ + line1 Read/Write, lcd line1 + line2 Read/Write, lcd line2 + line3 Read/Write, lcd line3 + + get_icons Read, returns a set of available icons. + hide_icon Write, hide the element by writing the icon name. + 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) + + ringtone Write, upload binary representation of a ringtone, + 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: + + Example: + cat ./line3 + 888888888888 + Linux Rocks! + +Writing to /sys/../lineX will set the coresponding 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 + + Will update the LCD with the current date & time. + + +4.2 get_icons +~~~~~~~~~~~~~ +Reading will return all available icon names and its current settings: + + cat ./get_icons + on M + on D + on : + IN + OUT + STORE + NEW + REP + SU + MO + TU + WE + TH + FR + SA + LED + DIALTONE + RINGTONE + + +4.3 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 + + 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 + + +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 - playback test: + aplay foobar.wav + + +6. Credits & Acknowledgments +~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + - Olivier Vandorpe, for starting the usbb2k-api project doing much of + the reverse engineering. + - Martin Diehl, for pointing out how to handle USB memory allocation. + - Dmitry Torokhov, for the numerous code reviews and suggestions. + |