From patchwork Sat Apr 14 11:57:05 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Niklas_S=C3=B6derlund?= X-Patchwork-Id: 10341113 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 81422604D4 for ; Sat, 14 Apr 2018 12:00:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 70F5E2878F for ; Sat, 14 Apr 2018 12:00:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 65A9D28A82; Sat, 14 Apr 2018 12:00:09 +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 DCA242878F for ; Sat, 14 Apr 2018 12:00:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751144AbeDNMAI (ORCPT ); Sat, 14 Apr 2018 08:00:08 -0400 Received: from bin-mail-out-05.binero.net ([195.74.38.228]:42655 "EHLO bin-mail-out-05.binero.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751087AbeDNMAH (ORCPT ); Sat, 14 Apr 2018 08:00:07 -0400 X-Halon-ID: 58fb559b-3fdb-11e8-8776-0050569116f7 Authorized-sender: niklas@soderlund.pp.se Received: from bismarck.berto.se (unknown [89.233.230.99]) by bin-vsp-out-03.atm.binero.net (Halon) with ESMTPA id 58fb559b-3fdb-11e8-8776-0050569116f7; Sat, 14 Apr 2018 14:00:01 +0200 (CEST) From: =?UTF-8?q?Niklas=20S=C3=B6derlund?= To: Laurent Pinchart , Hans Verkuil , linux-media@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, Kieran Bingham , =?UTF-8?q?Niklas=20S=C3=B6derlund?= Subject: [PATCH v14 12/33] rcar-vin: fix handling of single field frames (top, bottom and alternate fields) Date: Sat, 14 Apr 2018 13:57:05 +0200 Message-Id: <20180414115726.5075-13-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180414115726.5075-1-niklas.soderlund+renesas@ragnatech.se> References: <20180414115726.5075-1-niklas.soderlund+renesas@ragnatech.se> MIME-Version: 1.0 Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP There was never proper support in the VIN driver to deliver ALTERNATING field format to user-space, remove this field option. The problem is that ALTERNATING field order requires the sequence numbers of buffers returned to userspace to reflect if fields were dropped or not, something which is not possible with the VIN drivers capture logic. The VIN driver can still capture from a video source which delivers frames in ALTERNATING field order, but needs to combine them using the VIN hardware into INTERLACED field order. Before this change if a source was delivering fields using ALTERNATE the driver would default to combining them using this hardware feature. Only if the user explicitly requested ALTERNATE field order would incorrect frames be delivered. The height should not be cut in half for the format for TOP or BOTTOM fields settings. This was a mistake and it was made visible by the scaling refactoring. Correct behavior is that the user should request a frame size that fits the half height frame reflected in the field setting. If not the VIN will do its best to scale the top or bottom to the requested format and cropping and scaling do not work as expected. Signed-off-by: Niklas Söderlund Reviewed-by: Hans Verkuil Reviewed-by: Laurent Pinchart --- * Changes since v13 - Spelling dose -> does - Add review tag from Laurent * Changes since v12 - Spelling where -> were. - Add review tag from Hans. --- drivers/media/platform/rcar-vin/rcar-dma.c | 15 +---------- drivers/media/platform/rcar-vin/rcar-v4l2.c | 40 +++++++---------------------- 2 files changed, 10 insertions(+), 45 deletions(-) diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c b/drivers/media/platform/rcar-vin/rcar-dma.c index 4f48575f2008fe34..9233924e5b52de5f 100644 --- a/drivers/media/platform/rcar-vin/rcar-dma.c +++ b/drivers/media/platform/rcar-vin/rcar-dma.c @@ -617,7 +617,6 @@ static int rvin_setup(struct rvin_dev *vin) case V4L2_FIELD_INTERLACED_BT: vnmc = VNMC_IM_FULL | VNMC_FOC; break; - case V4L2_FIELD_ALTERNATE: case V4L2_FIELD_NONE: vnmc = VNMC_IM_ODD_EVEN; progressive = true; @@ -745,18 +744,6 @@ static bool rvin_capture_active(struct rvin_dev *vin) return rvin_read(vin, VNMS_REG) & VNMS_CA; } -static enum v4l2_field rvin_get_active_field(struct rvin_dev *vin, u32 vnms) -{ - if (vin->format.field == V4L2_FIELD_ALTERNATE) { - /* If FS is set it's a Even field */ - if (vnms & VNMS_FS) - return V4L2_FIELD_BOTTOM; - return V4L2_FIELD_TOP; - } - - return vin->format.field; -} - static void rvin_set_slot_addr(struct rvin_dev *vin, int slot, dma_addr_t addr) { const struct rvin_video_format *fmt; @@ -892,7 +879,7 @@ static irqreturn_t rvin_irq(int irq, void *data) /* Capture frame */ if (vin->queue_buf[slot]) { - vin->queue_buf[slot]->field = rvin_get_active_field(vin, vnms); + vin->queue_buf[slot]->field = vin->format.field; vin->queue_buf[slot]->sequence = vin->sequence; vin->queue_buf[slot]->vb2_buf.timestamp = ktime_get_ns(); vb2_buffer_done(&vin->queue_buf[slot]->vb2_buf, diff --git a/drivers/media/platform/rcar-vin/rcar-v4l2.c b/drivers/media/platform/rcar-vin/rcar-v4l2.c index 16e895657c3f51c5..81a9aec96e8e664a 100644 --- a/drivers/media/platform/rcar-vin/rcar-v4l2.c +++ b/drivers/media/platform/rcar-vin/rcar-v4l2.c @@ -121,33 +121,6 @@ static int rvin_reset_format(struct rvin_dev *vin) vin->format.colorspace = mf->colorspace; vin->format.field = mf->field; - /* - * If the subdevice uses ALTERNATE field mode and G_STD is - * implemented use the VIN HW to combine the two fields to - * one INTERLACED frame. The ALTERNATE field mode can still - * be requested in S_FMT and be respected, this is just the - * default which is applied at probing or when S_STD is called. - */ - if (vin->format.field == V4L2_FIELD_ALTERNATE && - v4l2_subdev_has_op(vin_to_source(vin), video, g_std)) - vin->format.field = V4L2_FIELD_INTERLACED; - - switch (vin->format.field) { - case V4L2_FIELD_TOP: - case V4L2_FIELD_BOTTOM: - case V4L2_FIELD_ALTERNATE: - vin->format.height /= 2; - break; - case V4L2_FIELD_NONE: - case V4L2_FIELD_INTERLACED_TB: - case V4L2_FIELD_INTERLACED_BT: - case V4L2_FIELD_INTERLACED: - break; - default: - vin->format.field = RVIN_DEFAULT_FIELD; - break; - } - rvin_reset_crop_compose(vin); vin->format.bytesperline = rvin_format_bytesperline(&vin->format); @@ -235,15 +208,20 @@ static int __rvin_try_format(struct rvin_dev *vin, switch (pix->field) { case V4L2_FIELD_TOP: case V4L2_FIELD_BOTTOM: - case V4L2_FIELD_ALTERNATE: - pix->height /= 2; - source->height /= 2; - break; case V4L2_FIELD_NONE: case V4L2_FIELD_INTERLACED_TB: case V4L2_FIELD_INTERLACED_BT: case V4L2_FIELD_INTERLACED: break; + case V4L2_FIELD_ALTERNATE: + /* + * Driver does not (yet) support outputting ALTERNATE to a + * userspace. It does support outputting INTERLACED so use + * the VIN hardware to combine the two fields. + */ + pix->field = V4L2_FIELD_INTERLACED; + pix->height *= 2; + break; default: pix->field = RVIN_DEFAULT_FIELD; break;