From: Johan Fjeldtvedt Date: Mon, 22 Aug 2016 09:04:53 +0000 (-0300) Subject: [media] pulse8-cec: add notes about behavior in autonomous mode X-Git-Tag: v4.9-rc1~43^2~241 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=89c2e228718cf0d545de7a589e971dbbe70cb8a3;p=linux.git [media] pulse8-cec: add notes about behavior in autonomous mode The pulse8 dongle has some quirky behaviors when in autonomous mode. Document these. Signed-off-by: Johan Fjeldtvedt Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/staging/media/pulse8-cec/pulse8-cec.c b/drivers/staging/media/pulse8-cec/pulse8-cec.c index dcda68a569a7..3361f4acfdaf 100644 --- a/drivers/staging/media/pulse8-cec/pulse8-cec.c +++ b/drivers/staging/media/pulse8-cec/pulse8-cec.c @@ -10,6 +10,29 @@ * this archive for more details. */ +/* + * Notes: + * + * - Devices with firmware version < 2 do not store their configuration in + * EEPROM. + * + * - In autonomous mode, only messages from a TV will be acknowledged, even + * polling messages. Upon receiving a message from a TV, the dongle will + * respond to messages from any logical address. + * + * - In autonomous mode, the dongle will by default reply Feature Abort + * [Unrecognized Opcode] when it receives Give Device Vendor ID. It will + * however observe vendor ID's reported by other devices and possibly + * alter this behavior. When TV's (and TV's only) report that their vendor ID + * is LG (0x00e091), the dongle will itself reply that it has the same vendor + * ID, and it will respond to at least one vendor specific command. + * + * - In autonomous mode, the dongle is known to attempt wakeup if it receives + * ["Power On"], ["Power] or ["Power Toggle"], or if it + * receives with its own physical address. It also does this + * if it receives [0x03 0x00] from an LG TV. + */ + #include #include #include