From patchwork Wed Jul 3 05:56:03 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Libin Yang X-Patchwork-Id: 2815181 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 7429A9F3C3 for ; Wed, 3 Jul 2013 05:56:22 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7A96D200E8 for ; Wed, 3 Jul 2013 05:56:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6CFFF200DC for ; Wed, 3 Jul 2013 05:56:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752552Ab3GCF4S (ORCPT ); Wed, 3 Jul 2013 01:56:18 -0400 Received: from na3sys009aog107.obsmtp.com ([74.125.149.197]:60665 "EHLO na3sys009aog107.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751830Ab3GCF4R (ORCPT ); Wed, 3 Jul 2013 01:56:17 -0400 Received: from SC-OWA01.marvell.com ([199.233.58.136]) (using TLSv1) by na3sys009aob107.postini.com ([74.125.148.12]) with SMTP ID DSNKUdO8/i1T6EmoPDjU2IcnJPit3jMuDICi@postini.com; Tue, 02 Jul 2013 22:56:17 PDT Received: from maili.marvell.com (10.93.76.43) by sc-owa01.marvell.com (10.93.76.21) with Microsoft SMTP Server id 8.3.213.0; Tue, 2 Jul 2013 22:56:14 -0700 Received: from localhost (unknown [10.38.36.205]) by maili.marvell.com (Postfix) with ESMTP id 75DE61CCD9C; Tue, 2 Jul 2013 22:56:13 -0700 (PDT) From: Libin Yang To: , CC: , , Libin Yang , Albert Wang Subject: [PATCH v3 6/7] marvell-ccic: add SOF / EOF pair check for marvell-ccic driver Date: Wed, 3 Jul 2013 13:56:03 +0800 Message-ID: <1372830964-22323-7-git-send-email-lbyang@marvell.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1372830964-22323-1-git-send-email-lbyang@marvell.com> References: <1372830964-22323-1-git-send-email-lbyang@marvell.com> MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds the SOFx/EOFx pair check for marvell-ccic. When switching format, the last EOF may not arrive when stop streamning. And the EOF will be detected in the next start streaming. Must ensure clear the left over frame flags before every really start streaming. Signed-off-by: Albert Wang Signed-off-by: Libin Yang Acked-by: Jonathan Corbet Acked-by: Guennadi Liakhovetski --- drivers/media/platform/marvell-ccic/mcam-core.c | 30 ++++++++++++++++++++--- 1 file changed, 26 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/marvell-ccic/mcam-core.c b/drivers/media/platform/marvell-ccic/mcam-core.c index 5b838c0..f3a260c 100644 --- a/drivers/media/platform/marvell-ccic/mcam-core.c +++ b/drivers/media/platform/marvell-ccic/mcam-core.c @@ -95,6 +95,9 @@ MODULE_PARM_DESC(buffer_mode, #define CF_CONFIG_NEEDED 4 /* Must configure hardware */ #define CF_SINGLE_BUFFER 5 /* Running with a single buffer */ #define CF_SG_RESTART 6 /* SG restart needed */ +#define CF_FRAME_SOF0 7 /* Frame 0 started */ +#define CF_FRAME_SOF1 8 +#define CF_FRAME_SOF2 9 #define sensor_call(cam, o, f, args...) \ v4l2_subdev_call(cam->sensor, o, f, ##args) @@ -261,8 +264,10 @@ static void mcam_reset_buffers(struct mcam_camera *cam) int i; cam->next_buf = -1; - for (i = 0; i < cam->nbufs; i++) + for (i = 0; i < cam->nbufs; i++) { clear_bit(i, &cam->flags); + clear_bit(CF_FRAME_SOF0 + i, &cam->flags); + } } static inline int mcam_needs_config(struct mcam_camera *cam) @@ -1140,6 +1145,7 @@ static void mcam_vb_wait_finish(struct vb2_queue *vq) static int mcam_vb_start_streaming(struct vb2_queue *vq, unsigned int count) { struct mcam_camera *cam = vb2_get_drv_priv(vq); + unsigned int frame; if (cam->state != S_IDLE) { INIT_LIST_HEAD(&cam->buffers); @@ -1157,6 +1163,14 @@ static int mcam_vb_start_streaming(struct vb2_queue *vq, unsigned int count) cam->state = S_BUFWAIT; return 0; } + + /* + * Ensure clear the left over frame flags + * before every really start streaming + */ + for (frame = 0; frame < cam->nbufs; frame++) + clear_bit(CF_FRAME_SOF0 + frame, &cam->flags); + return mcam_read_setup(cam); } @@ -1845,9 +1859,11 @@ int mccic_irq(struct mcam_camera *cam, unsigned int irqs) * each time. */ for (frame = 0; frame < cam->nbufs; frame++) - if (irqs & (IRQ_EOF0 << frame)) { + if (irqs & (IRQ_EOF0 << frame) && + test_bit(CF_FRAME_SOF0 + frame, &cam->flags)) { mcam_frame_complete(cam, frame); handled = 1; + clear_bit(CF_FRAME_SOF0 + frame, &cam->flags); if (cam->buffer_mode == B_DMA_sg) break; } @@ -1856,9 +1872,15 @@ int mccic_irq(struct mcam_camera *cam, unsigned int irqs) * code assumes that we won't get multiple frame interrupts * at once; may want to rethink that. */ - if (irqs & (IRQ_SOF0 | IRQ_SOF1 | IRQ_SOF2)) { + for (frame = 0; frame < cam->nbufs; frame++) { + if (irqs & (IRQ_SOF0 << frame)) { + set_bit(CF_FRAME_SOF0 + frame, &cam->flags); + handled = IRQ_HANDLED; + } + } + + if (handled == IRQ_HANDLED) { set_bit(CF_DMA_ACTIVE, &cam->flags); - handled = 1; if (cam->buffer_mode == B_DMA_sg) mcam_ctlr_stop(cam); }