From patchwork Tue Nov 2 07:13:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jammy Huang X-Patchwork-Id: 12597979 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C2AB7C433EF for ; Tue, 2 Nov 2021 07:13:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AB88760C41 for ; Tue, 2 Nov 2021 07:13:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231538AbhKBHQd (ORCPT ); Tue, 2 Nov 2021 03:16:33 -0400 Received: from twspam01.aspeedtech.com ([211.20.114.71]:29097 "EHLO twspam01.aspeedtech.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231303AbhKBHQY (ORCPT ); Tue, 2 Nov 2021 03:16:24 -0400 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 1A26oHrr050484; Tue, 2 Nov 2021 14:50:17 +0800 (GMT-8) (envelope-from jammy_huang@aspeedtech.com) Received: from JammyHuang-PC.aspeed.com (192.168.2.115) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 2 Nov 2021 15:13:04 +0800 From: Jammy Huang To: , , , , , , , , Subject: [PATCH] media: aspeed: fix mode-detect always timeout at 2nd run Date: Tue, 2 Nov 2021 15:13:37 +0800 Message-ID: <20211102071337.5983-1-jammy_huang@aspeedtech.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [192.168.2.115] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 1A26oHrr050484 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org aspeed_video_get_resolution() will try to do res-detect again if the timing got in last try is invalid. But it will always timeout because VE_SEQ_CTRL_TRIG_MODE_DET only cleared after 1st mode-detect. To fix the problem, just clear VE_SEQ_CTRL_TRIG_MODE_DET before set in aspeed_video_enable_mode_detect(). Signed-off-by: Jammy Huang Acked-by: Paul Menzel --- drivers/media/platform/aspeed-video.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/aspeed-video.c b/drivers/media/platform/aspeed-video.c index cd2b71c81e31..b470f4b68aa0 100644 --- a/drivers/media/platform/aspeed-video.c +++ b/drivers/media/platform/aspeed-video.c @@ -611,6 +611,10 @@ static void aspeed_video_enable_mode_detect(struct aspeed_video *video) aspeed_video_update(video, VE_INTERRUPT_CTRL, 0, VE_INTERRUPT_MODE_DETECT); + /* Disable mode detect in order to re-trigger */ + aspeed_video_update(video, VE_SEQ_CTRL, + VE_SEQ_CTRL_TRIG_MODE_DET, 0); + /* Trigger mode detect */ aspeed_video_update(video, VE_SEQ_CTRL, 0, VE_SEQ_CTRL_TRIG_MODE_DET); } @@ -930,10 +934,6 @@ static void aspeed_video_get_resolution(struct aspeed_video *video) return; } - /* Disable mode detect in order to re-trigger */ - aspeed_video_update(video, VE_SEQ_CTRL, - VE_SEQ_CTRL_TRIG_MODE_DET, 0); - aspeed_video_check_and_set_polarity(video); aspeed_video_enable_mode_detect(video);