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: 10612449 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 184FA6CB for ; Mon, 24 Sep 2018 12:55:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 06A1429C48 for ; Mon, 24 Sep 2018 12:55:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EE5BE29C9C; 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=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 67F9729C48 for ; Mon, 24 Sep 2018 12:55:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=7d6HSoggTdPFj10rq6AZvVbdqUvLEo9UTpSVqKz6zjU=; b=AV1daK8kSZkQGV r2L3d27IV8ZcvC9dJlJ9ie3jjoL8+M2nQZBrL58Knt02D2fmZVvmVvPTXe2IQuuEpN8tQ5RNTjquZ K47NlV53EHZb/wrKprEOuKsCymhz+iBP6p8BJuPoi0LD34YCOSgn1D/w1xuljWHy9alvNrGoDm6Ra gi9Mls+0b480fOxyvY0MK3JQFOD9EjNo/MzzVetWxHbZx4Ii24k7R6evaB3ZvRHRFwiLdNY50V2BJ KOACFY0wBp5ESvXTJzeCfz8OmqaWuzYv5KXKXd58Zzxq9wUCYGwLiH1wT0GilgqhlozxaLgKK2ScW mxfVcbbiVGHsFKUtO5nw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1g4QOj-0006xg-TB; Mon, 24 Sep 2018 12:55:33 +0000 Received: from mx08-00178001.pphosted.com ([91.207.212.93] helo=mx07-00178001.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1g4QOg-0006ve-Dw for linux-arm-kernel@lists.infradead.org; Mon, 24 Sep 2018 12:55:32 +0000 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 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180924_055530_755477_5BFCBB6E X-CRM114-Status: GOOD ( 10.59 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kernel@vger.kernel.org, Yannick Fertre , Benjamin Gaignard , Hugues Fruchet , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.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;