From patchwork Mon Sep 24 12:54:59 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hugues FRUCHET X-Patchwork-Id: 10612447 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3DC6C157B for ; Mon, 24 Sep 2018 12:55:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2DC2829C48 for ; Mon, 24 Sep 2018 12:55:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1FF1329C9C; Mon, 24 Sep 2018 12:55:45 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AE15729C48 for ; Mon, 24 Sep 2018 12:55:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729178AbeIXS5i (ORCPT ); Mon, 24 Sep 2018 14:57:38 -0400 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:5679 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728862AbeIXS5g (ORCPT ); Mon, 24 Sep 2018 14:57:36 -0400 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx08-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id w8OCrXOh003419; Mon, 24 Sep 2018 14:55:13 +0200 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-00178001.pphosted.com with ESMTP id 2mnav5b4e3-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Mon, 24 Sep 2018 14:55:13 +0200 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id DF41D9D; Mon, 24 Sep 2018 12:55:11 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas24.st.com [10.75.90.94]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id B72F8598A; Mon, 24 Sep 2018 12:55:11 +0000 (GMT) Received: from SAFEX1HUBCAS23.st.com (10.75.90.46) by Safex1hubcas24.st.com (10.75.90.94) with Microsoft SMTP Server (TLS) id 14.3.361.1; Mon, 24 Sep 2018 14:55:11 +0200 Received: from localhost (10.201.23.73) by webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.361.1; Mon, 24 Sep 2018 14:55:11 +0200 From: Hugues Fruchet To: Alexandre Torgue , Mauro Carvalho Chehab , Hans Verkuil CC: , , , , Benjamin Gaignard , Yannick Fertre , Hugues Fruchet Subject: [PATCH] media: stm32-dcmi: only enable IT frame on JPEG capture Date: Mon, 24 Sep 2018 14:54:59 +0200 Message-ID: <1537793699-2555-1-git-send-email-hugues.fruchet@st.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.201.23.73] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-09-24_07:,, signatures=0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Only enable IT frame on JPEG capture, this saves some CPU interruptions and processing on all the other cases. Signed-off-by: Hugues Fruchet --- drivers/media/platform/stm32/stm32-dcmi.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/stm32/stm32-dcmi.c b/drivers/media/platform/stm32/stm32-dcmi.c index ba3e2ee..d6b00eda 100644 --- a/drivers/media/platform/stm32/stm32-dcmi.c +++ b/drivers/media/platform/stm32/stm32-dcmi.c @@ -659,7 +659,10 @@ static int dcmi_start_streaming(struct vb2_queue *vq, unsigned int count) } /* Enable interruptions */ - reg_set(dcmi->regs, DCMI_IER, IT_FRAME | IT_OVR | IT_ERR); + if (dcmi->sd_format->fourcc == V4L2_PIX_FMT_JPEG) + reg_set(dcmi->regs, DCMI_IER, IT_FRAME | IT_OVR | IT_ERR); + else + reg_set(dcmi->regs, DCMI_IER, IT_OVR | IT_ERR); return 0;