From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-wm0-f65.google.com ([74.125.82.65]:34320 "EHLO mail-wm0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754796AbcHVJFN (ORCPT ); Mon, 22 Aug 2016 05:05:13 -0400 Received: by mail-wm0-f65.google.com with SMTP id q128so12447596wma.1 for ; Mon, 22 Aug 2016 02:05:13 -0700 (PDT) From: Johan Fjeldtvedt To: linux-media@vger.kernel.org Cc: Johan Fjeldtvedt Subject: [PATCHv2 3/4] pulse8-cec: add notes about behavior in autonomous mode Date: Mon, 22 Aug 2016 11:04:53 +0200 Message-Id: <1471856694-14182-4-git-send-email-jaffe1@gmail.com> In-Reply-To: <1471856694-14182-1-git-send-email-jaffe1@gmail.com> References: <1471856694-14182-1-git-send-email-jaffe1@gmail.com> Sender: linux-media-owner@vger.kernel.org List-ID: The pulse8 dongle has some quirky behaviors when in autonomous mode. Document these. Signed-off-by: Johan Fjeldtvedt --- drivers/staging/media/pulse8-cec/pulse8-cec.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/staging/media/pulse8-cec/pulse8-cec.c b/drivers/staging/media/pulse8-cec/pulse8-cec.c index 37c8418..aa679a3 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 -- 2.7.4