From patchwork Sat Dec 5 02:13:00 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 7774241 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: X-Original-To: patchwork-linux-sh@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id AB3DFBEEE1 for ; Sat, 5 Dec 2015 02:14:00 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C6DB62055C for ; Sat, 5 Dec 2015 02:13:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C036A20584 for ; Sat, 5 Dec 2015 02:13:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932307AbbLECNU (ORCPT ); Fri, 4 Dec 2015 21:13:20 -0500 Received: from galahad.ideasonboard.com ([185.26.127.97]:55018 "EHLO galahad.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932296AbbLECNS (ORCPT ); Fri, 4 Dec 2015 21:13:18 -0500 Received: from avalon.bb.dnainternet.fi (85-23-193-79.bb.dnainternet.fi [85.23.193.79]) by galahad.ideasonboard.com (Postfix) with ESMTPSA id 738D721C52; Sat, 5 Dec 2015 03:11:55 +0100 (CET) From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: linux-sh@vger.kernel.org Subject: [PATCH v2 26/32] v4l: vsp1: Set the alpha value manually in RPF and WPF s_stream handlers Date: Sat, 5 Dec 2015 04:13:00 +0200 Message-Id: <1449281586-25726-27-git-send-email-laurent.pinchart+renesas@ideasonboard.com> X-Mailer: git-send-email 2.4.10 In-Reply-To: <1449281586-25726-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> References: <1449281586-25726-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_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 The RPF and WPF alpha values are set through V4L2 controls and applied when starting the video stream by a call to v4l2_ctrl_handler_setup(). As that function uses the control handler mutex it can't be called in interrupt context, where the VSP+DU pipeline handler might need to reconfigure the pipeline. Set the alpha value manually in the RPF and WPF s_stream handler to ensure that the hardware is properly configured even when controlled without the userspace API. If the userspace API is enabled protect that with the control lock to avoid race conditions with userspace. Signed-off-by: Laurent Pinchart --- drivers/media/platform/vsp1/vsp1_rpf.c | 16 ++++++++++++++-- drivers/media/platform/vsp1/vsp1_rwpf.h | 2 ++ drivers/media/platform/vsp1/vsp1_wpf.c | 7 ++++--- 3 files changed, 20 insertions(+), 5 deletions(-) diff --git a/drivers/media/platform/vsp1/vsp1_rpf.c b/drivers/media/platform/vsp1/vsp1_rpf.c index b9c39f9e4458..b1d4a46f230e 100644 --- a/drivers/media/platform/vsp1/vsp1_rpf.c +++ b/drivers/media/platform/vsp1/vsp1_rpf.c @@ -68,7 +68,9 @@ static const struct v4l2_ctrl_ops rpf_ctrl_ops = { static int rpf_s_stream(struct v4l2_subdev *subdev, int enable) { + struct vsp1_pipeline *pipe = to_vsp1_pipeline(&subdev->entity); struct vsp1_rwpf *rpf = to_rwpf(subdev); + struct vsp1_device *vsp1 = rpf->entity.vsp1; const struct vsp1_format_info *fmtinfo = rpf->fmtinfo; const struct v4l2_pix_format_mplane *format = &rpf->format; const struct v4l2_rect *crop = &rpf->crop; @@ -148,6 +150,15 @@ static int rpf_s_stream(struct v4l2_subdev *subdev, int enable) vsp1_rpf_write(rpf, VI6_RPF_ALPH_SEL, VI6_RPF_ALPH_SEL_AEXT_EXT | (fmtinfo->alpha ? VI6_RPF_ALPH_SEL_ASEL_PACKED : VI6_RPF_ALPH_SEL_ASEL_FIXED)); + + if (vsp1->pdata.uapi) + mutex_lock(rpf->ctrls.lock); + vsp1_rpf_write(rpf, VI6_RPF_VRTCOL_SET, + rpf->alpha->cur.val << VI6_RPF_VRTCOL_SET_LAYA_SHIFT); + vsp1_pipeline_propagate_alpha(pipe, &rpf->entity, rpf->alpha->cur.val); + if (vsp1->pdata.uapi) + mutex_unlock(rpf->ctrls.lock); + vsp1_rpf_write(rpf, VI6_RPF_MSK_CTRL, 0); vsp1_rpf_write(rpf, VI6_RPF_CKEY_CTRL, 0); @@ -245,8 +256,9 @@ struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index) /* Initialize the control handler. */ v4l2_ctrl_handler_init(&rpf->ctrls, 1); - v4l2_ctrl_new_std(&rpf->ctrls, &rpf_ctrl_ops, V4L2_CID_ALPHA_COMPONENT, - 0, 255, 1, 255); + rpf->alpha = v4l2_ctrl_new_std(&rpf->ctrls, &rpf_ctrl_ops, + V4L2_CID_ALPHA_COMPONENT, + 0, 255, 1, 255); rpf->entity.subdev.ctrl_handler = &rpf->ctrls; diff --git a/drivers/media/platform/vsp1/vsp1_rwpf.h b/drivers/media/platform/vsp1/vsp1_rwpf.h index 1a90c7c8e972..8e8235682ada 100644 --- a/drivers/media/platform/vsp1/vsp1_rwpf.h +++ b/drivers/media/platform/vsp1/vsp1_rwpf.h @@ -23,6 +23,7 @@ #define RWPF_PAD_SINK 0 #define RWPF_PAD_SOURCE 1 +struct v4l2_ctrl; struct vsp1_rwpf; struct vsp1_video; @@ -40,6 +41,7 @@ struct vsp1_rwpf_operations { struct vsp1_rwpf { struct vsp1_entity entity; struct v4l2_ctrl_handler ctrls; + struct v4l2_ctrl *alpha; struct vsp1_video *video; diff --git a/drivers/media/platform/vsp1/vsp1_wpf.c b/drivers/media/platform/vsp1/vsp1_wpf.c index d0edcde721bd..40eeaf2d76d2 100644 --- a/drivers/media/platform/vsp1/vsp1_wpf.c +++ b/drivers/media/platform/vsp1/vsp1_wpf.c @@ -156,7 +156,7 @@ static int wpf_s_stream(struct v4l2_subdev *subdev, int enable) */ if (vsp1->pdata.uapi) mutex_lock(wpf->ctrls.lock); - outfmt |= vsp1_wpf_read(wpf, VI6_WPF_OUTFMT) & VI6_WPF_OUTFMT_PDV_MASK; + outfmt |= wpf->alpha->cur.val << VI6_WPF_OUTFMT_PDV_SHIFT; vsp1_wpf_write(wpf, VI6_WPF_OUTFMT, outfmt); if (vsp1->pdata.uapi) mutex_unlock(wpf->ctrls.lock); @@ -254,8 +254,9 @@ struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index) /* Initialize the control handler. */ v4l2_ctrl_handler_init(&wpf->ctrls, 1); - v4l2_ctrl_new_std(&wpf->ctrls, &wpf_ctrl_ops, V4L2_CID_ALPHA_COMPONENT, - 0, 255, 1, 255); + wpf->alpha = v4l2_ctrl_new_std(&wpf->ctrls, &wpf_ctrl_ops, + V4L2_CID_ALPHA_COMPONENT, + 0, 255, 1, 255); wpf->entity.subdev.ctrl_handler = &wpf->ctrls;