From patchwork Fri Aug 31 08:11:03 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Philipp Zabel X-Patchwork-Id: 1391441 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 9AC7BDF215 for ; Fri, 31 Aug 2012 08:11:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751667Ab2HaILf (ORCPT ); Fri, 31 Aug 2012 04:11:35 -0400 Received: from metis.ext.pengutronix.de ([92.198.50.35]:37001 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751315Ab2HaIL1 (ORCPT ); Fri, 31 Aug 2012 04:11:27 -0400 Received: from dude.hi.pengutronix.de ([10.1.0.7] helo=dude.pengutronix.de) by metis.ext.pengutronix.de with esmtp (Exim 4.72) (envelope-from ) id 1T7MK3-0004rl-Ai; Fri, 31 Aug 2012 10:11:23 +0200 From: Philipp Zabel To: linux-media@vger.kernel.org Cc: Javier Martin , Mauro Carvalho Chehab , Richard Zhao , Laurent Pinchart , Sylwester Nawrocki , Kyungmin Park , Hans Verkuil , kernel@pengutronix.de, Philipp Zabel Subject: [PATCH v3 09/16] media: coda: wait for picture run completion in start/stop_streaming Date: Fri, 31 Aug 2012 10:11:03 +0200 Message-Id: <1346400670-16002-10-git-send-email-p.zabel@pengutronix.de> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1346400670-16002-1-git-send-email-p.zabel@pengutronix.de> References: <1346400670-16002-1-git-send-email-p.zabel@pengutronix.de> X-SA-Exim-Connect-IP: 10.1.0.7 X-SA-Exim-Mail-From: p.zabel@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-media@vger.kernel.org Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org While the CODA is running a PIC_RUN command, its registers are not to be touched. Signed-off-by: Philipp Zabel --- Changes since v2: - Properly move the call to coda_free_framebuffers in coda_stop_streaming, to avoid introducing a memory leak. --- drivers/media/platform/coda.c | 38 +++++++++++++++++++++++++++++--------- 1 file changed, 29 insertions(+), 9 deletions(-) diff --git a/drivers/media/platform/coda.c b/drivers/media/platform/coda.c index 2e357394..de66579 100644 --- a/drivers/media/platform/coda.c +++ b/drivers/media/platform/coda.c @@ -138,6 +138,7 @@ struct coda_dev { struct list_head instances; unsigned long instance_mask; struct delayed_work timeout; + struct completion done; }; struct coda_params { @@ -727,6 +728,7 @@ static void coda_device_run(void *m2m_priv) /* 1 second timeout in case CODA locks up */ schedule_delayed_work(&dev->timeout, HZ); + INIT_COMPLETION(dev->done); coda_command_async(ctx, CODA_COMMAND_PIC_RUN); } @@ -971,6 +973,10 @@ static int coda_start_streaming(struct vb2_queue *q, unsigned int count) if (!(ctx->rawstreamon & ctx->compstreamon)) return 0; + if (coda_isbusy(dev)) + if (wait_for_completion_interruptible_timeout(&dev->done, HZ) <= 0) + return -EBUSY; + ctx->gopcounter = ctx->params.gop_size - 1; q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); @@ -1213,6 +1219,7 @@ static int coda_start_streaming(struct vb2_queue *q, unsigned int count) static int coda_stop_streaming(struct vb2_queue *q) { struct coda_ctx *ctx = vb2_get_drv_priv(q); + struct coda_dev *dev = ctx->dev; if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, @@ -1224,20 +1231,29 @@ static int coda_stop_streaming(struct vb2_queue *q) ctx->compstreamon = 0; } - if (!ctx->rawstreamon && !ctx->compstreamon) { - cancel_delayed_work(&dev->timeout); + /* Don't stop the coda unless both queues are off */ + if (ctx->rawstreamon || ctx->compstreamon) + return 0; - v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, - "%s: sent command 'SEQ_END' to coda\n", __func__); - if (coda_command_sync(ctx, CODA_COMMAND_SEQ_END)) { - v4l2_err(&ctx->dev->v4l2_dev, - "CODA_COMMAND_SEQ_END failed\n"); - return -ETIMEDOUT; + if (coda_isbusy(dev)) { + if (wait_for_completion_interruptible_timeout(&dev->done, HZ) <= 0) { + v4l2_warn(&dev->v4l2_dev, + "%s: timeout, sending SEQ_END anyway\n", __func__); } + } - coda_free_framebuffers(ctx); + cancel_delayed_work(&dev->timeout); + + v4l2_dbg(1, coda_debug, &dev->v4l2_dev, + "%s: sent command 'SEQ_END' to coda\n", __func__); + if (coda_command_sync(ctx, CODA_COMMAND_SEQ_END)) { + v4l2_err(&dev->v4l2_dev, + "CODA_COMMAND_SEQ_END failed\n"); + return -ETIMEDOUT; } + coda_free_framebuffers(ctx); + return 0; } @@ -1522,6 +1538,8 @@ static irqreturn_t coda_irq_handler(int irq, void *data) return IRQ_NONE; } + complete(&dev->done); + src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx); @@ -1857,6 +1875,8 @@ static int __devinit coda_probe(struct platform_device *pdev) spin_lock_init(&dev->irqlock); INIT_LIST_HEAD(&dev->instances); INIT_DELAYED_WORK(&dev->timeout, coda_timeout); + init_completion(&dev->done); + complete(&dev->done); dev->plat_dev = pdev; dev->clk_per = devm_clk_get(&pdev->dev, "per");