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[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 <jaffe1@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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@ -10,6 +10,29 @@
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* this archive for more details.
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*/
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/*
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* Notes:
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*
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* - Devices with firmware version < 2 do not store their configuration in
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* EEPROM.
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*
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* - In autonomous mode, only messages from a TV will be acknowledged, even
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* polling messages. Upon receiving a message from a TV, the dongle will
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* respond to messages from any logical address.
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*
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* - In autonomous mode, the dongle will by default reply Feature Abort
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* [Unrecognized Opcode] when it receives Give Device Vendor ID. It will
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* however observe vendor ID's reported by other devices and possibly
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* alter this behavior. When TV's (and TV's only) report that their vendor ID
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* is LG (0x00e091), the dongle will itself reply that it has the same vendor
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* ID, and it will respond to at least one vendor specific command.
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*
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* - In autonomous mode, the dongle is known to attempt wakeup if it receives
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* <User Control Pressed> ["Power On"], ["Power] or ["Power Toggle"], or if it
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* receives <Set Stream Path> with its own physical address. It also does this
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* if it receives <Vendor Specific Command> [0x03 0x00] from an LG TV.
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*/
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#include <linux/completion.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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