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| author |   Johan Fjeldtvedt <jaffe1@gmail.com> | 2016-08-22 06:04:53 -0300 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-09-06 16:34:01 -0300 |
| commit | 89c2e228718cf0d545de7a589e971dbbe70cb8a3 (patch) | |
| tree | 7e0813a61d41b42fa54671c9c63af9cce856323f /drivers/staging/media/pulse8-cec/pulse8-cec.c | |
| parent | [media] pulse8-cec: serialize communication with adapter (diff) | |
| download | linux-dev-89c2e228718cf0d545de7a589e971dbbe70cb8a3.tar.xz linux-dev-89c2e228718cf0d545de7a589e971dbbe70cb8a3.zip | |
[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>
Diffstat (limited to 'drivers/staging/media/pulse8-cec/pulse8-cec.c')
| -rw-r--r-- | drivers/staging/media/pulse8-cec/pulse8-cec.c | 23 |
1 files changed, 23 insertions, 0 deletions
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 + * <User Control Pressed> ["Power On"], ["Power] or ["Power Toggle"], or if it + * receives <Set Stream Path> with its own physical address. It also does this + * if it receives <Vendor Specific Command> [0x03 0x00] from an LG TV. + */ + #include <linux/completion.h> #include <linux/init.h> #include <linux/interrupt.h> |