path: root/Documentation/arm/empeg
diff options
Diffstat (limited to 'Documentation/arm/empeg')
3 files changed, 73 insertions, 0 deletions
diff --git a/Documentation/arm/empeg/README b/Documentation/arm/empeg/README
new file mode 100644
index 000000000000..09cc8d03ae58
--- /dev/null
+++ b/Documentation/arm/empeg/README
@@ -0,0 +1,13 @@
+Empeg, Ltd's Empeg MP3 Car Audio Player
+The initial design is to go in your car, but you can use it at home, on a
+boat... almost anywhere. The principle is to store CD-quality music using
+MPEG technology onto a hard disk in the unit, and use the power of the
+embedded computer to serve up the music you want.
+For more details, see:
+ http://www.empeg.com
diff --git a/Documentation/arm/empeg/ir.txt b/Documentation/arm/empeg/ir.txt
new file mode 100644
index 000000000000..10a297450164
--- /dev/null
+++ b/Documentation/arm/empeg/ir.txt
@@ -0,0 +1,49 @@
+Infra-red driver documentation.
+Mike Crowe <mac@empeg.com>
+(C) Empeg Ltd 1999
+Not a lot here yet :-)
+The Kenwood KCA-R6A remote control generates a sequence like the following:
+Go low for approx 16T (Around 9000us)
+Go high for approx 8T (Around 4000us)
+Go low for less than 2T (Around 750us)
+For each of the 32 bits
+ Go high for more than 2T (Around 1500us) == 1
+ Go high for less than T (Around 400us) == 0
+ Go low for less than 2T (Around 750us)
+Rather than repeat a signal when the button is held down certain buttons
+generate the following code to indicate repetition.
+Go low for approx 16T
+Go high for approx 4T
+Go low for less than 2T
+(By removing the <2T from the start of the sequence and placing at the end
+ it can be considered a stop bit but I found it easier to deal with it at
+ the start).
+The 32 bits are encoded as XxYy where x and y are the actual data values
+while X and Y are the logical inverses of the associated data values. Using
+LSB first yields sensible codes for the numbers.
+All codes are of the form b9xx
+The numeric keys generate the code 0x where x is the number pressed.
+Tuner 1c
+Tape 1d
+CD 1e
+CD-MD-CH 1f
+Track- 0a
+Track+ 0b
+Rewind 0c
+FF 0d
+DNPP 5e
+Play/Pause 0e
+Vol+ 14
+Vol- 15
diff --git a/Documentation/arm/empeg/mkdevs b/Documentation/arm/empeg/mkdevs
new file mode 100644
index 000000000000..7a85e28d14f3
--- /dev/null
+++ b/Documentation/arm/empeg/mkdevs
@@ -0,0 +1,11 @@
+mknod /dev/display c 244 0
+mknod /dev/ir c 242 0
+mknod /dev/usb0 c 243 0
+mknod /dev/audio c 245 4
+mknod /dev/dsp c 245 3
+mknod /dev/mixer c 245 0
+mknod /dev/empeg_state c 246 0
+mknod /dev/radio0 c 81 64
+ln -sf radio0 radio
+ln -sf usb0 usb