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-rw-r--r--drivers/staging/media/pulse8-cec/pulse8-cec.c23
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>