From patchwork Mon Mar 6 00:43:47 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 9604947 X-Patchwork-Delegate: geert@linux-m68k.org 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 9641B601D2 for ; Mon, 6 Mar 2017 00:43:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7D2DA27816 for ; Mon, 6 Mar 2017 00:43:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6E59A27F54; Mon, 6 Mar 2017 00:43:34 +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=-7.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, 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 6E22727816 for ; Mon, 6 Mar 2017 00:43:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752500AbdCFAnc (ORCPT ); Sun, 5 Mar 2017 19:43:32 -0500 Received: from galahad.ideasonboard.com ([185.26.127.97]:60081 "EHLO galahad.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751582AbdCFAnb (ORCPT ); Sun, 5 Mar 2017 19:43:31 -0500 Received: from avalon.bb.dnainternet.fi (dfj612ybrt5fhg77mgycy-3.rev.dnainternet.fi [IPv6:2001:14ba:21f5:5b00:2e86:4862:ef6a:2804]) by galahad.ideasonboard.com (Postfix) with ESMTPSA id C2614201C1; Mon, 6 Mar 2017 01:42:13 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1488760934; bh=XAj4wIuFC2zY2KcO1j/HJAH4xP9olNCYRteKu9y1/Hc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iI4flWagBfDXw55onGoWQk/a/oM1grsv8Yw4oRJvqWG6fAym7FSd18KnEiR9KzGh9 Mo3VY5G74jCpYgdQmeVrMUbb6Tb928OtF3slpBwBukeqI2aXAB0D430fzacdAfcAQk /Z5ubxKTA4BRYyMBIgDtkAczwaVFC7/P6awSI4BU= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org Subject: [PATCH v2.1 3/3] v4l: vsp1: wpf: Implement rotation support Date: Mon, 6 Mar 2017 02:43:47 +0200 Message-Id: <20170306004347.16064-1-laurent.pinchart+renesas@ideasonboard.com> X-Mailer: git-send-email 2.10.2 In-Reply-To: <20170228150320.10104-4-laurent.pinchart+renesas@ideasonboard.com> References: <20170228150320.10104-4-laurent.pinchart+renesas@ideasonboard.com> 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 Some WPF instances, on Gen3 devices, can perform 90° rotation when writing frames to memory. Implement support for this using the V4L2_CID_ROTATE control. Signed-off-by: Laurent Pinchart --- Changes since v2: - Store controls in distinct fields instead of array. --- drivers/media/platform/vsp1/vsp1_rpf.c | 2 +- drivers/media/platform/vsp1/vsp1_rwpf.c | 5 + drivers/media/platform/vsp1/vsp1_rwpf.h | 7 +- drivers/media/platform/vsp1/vsp1_video.c | 12 +- drivers/media/platform/vsp1/vsp1_wpf.c | 205 +++++++++++++++++++++++-------- 5 files changed, 177 insertions(+), 54 deletions(-) diff --git a/drivers/media/platform/vsp1/vsp1_rpf.c b/drivers/media/platform/vsp1/vsp1_rpf.c index f5a9a4c8c74d..8feddd59cf8d 100644 --- a/drivers/media/platform/vsp1/vsp1_rpf.c +++ b/drivers/media/platform/vsp1/vsp1_rpf.c @@ -106,7 +106,7 @@ static void rpf_configure(struct vsp1_entity *entity, * of the pipeline. */ output = vsp1_entity_get_pad_format(wpf, wpf->config, - RWPF_PAD_SOURCE); + RWPF_PAD_SINK); crop.width = pipe->partition.width * input_width / output->width; diff --git a/drivers/media/platform/vsp1/vsp1_rwpf.c b/drivers/media/platform/vsp1/vsp1_rwpf.c index 7d52c88a583e..cfd8f1904fa6 100644 --- a/drivers/media/platform/vsp1/vsp1_rwpf.c +++ b/drivers/media/platform/vsp1/vsp1_rwpf.c @@ -121,6 +121,11 @@ static int vsp1_rwpf_set_format(struct v4l2_subdev *subdev, RWPF_PAD_SOURCE); *format = fmt->format; + if (rwpf->flip.rotate) { + format->width = fmt->format.height; + format->height = fmt->format.width; + } + done: mutex_unlock(&rwpf->entity.lock); return ret; diff --git a/drivers/media/platform/vsp1/vsp1_rwpf.h b/drivers/media/platform/vsp1/vsp1_rwpf.h index 1c98aff3da5d..58215a7ab631 100644 --- a/drivers/media/platform/vsp1/vsp1_rwpf.h +++ b/drivers/media/platform/vsp1/vsp1_rwpf.h @@ -56,9 +56,14 @@ struct vsp1_rwpf { struct { spinlock_t lock; - struct v4l2_ctrl *ctrls[2]; + struct { + struct v4l2_ctrl *vflip; + struct v4l2_ctrl *hflip; + struct v4l2_ctrl *rotate; + } ctrls; unsigned int pending; unsigned int active; + bool rotate; } flip; struct vsp1_rwpf_memory mem; diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c index 5239e08fabc3..795a3ca9ca03 100644 --- a/drivers/media/platform/vsp1/vsp1_video.c +++ b/drivers/media/platform/vsp1/vsp1_video.c @@ -187,9 +187,13 @@ static void vsp1_video_pipeline_setup_partitions(struct vsp1_pipeline *pipe) struct vsp1_entity *entity; unsigned int div_size; + /* + * Partitions are computed on the size before rotation, use the format + * at the WPF sink. + */ format = vsp1_entity_get_pad_format(&pipe->output->entity, pipe->output->entity.config, - RWPF_PAD_SOURCE); + RWPF_PAD_SINK); div_size = format->width; /* Gen2 hardware doesn't require image partitioning. */ @@ -229,9 +233,13 @@ static struct v4l2_rect vsp1_video_partition(struct vsp1_pipeline *pipe, struct v4l2_rect partition; unsigned int modulus; + /* + * Partitions are computed on the size before rotation, use the format + * at the WPF sink. + */ format = vsp1_entity_get_pad_format(&pipe->output->entity, pipe->output->entity.config, - RWPF_PAD_SOURCE); + RWPF_PAD_SINK); /* A single partition simply processes the output size in full. */ if (pipe->partitions <= 1) { diff --git a/drivers/media/platform/vsp1/vsp1_wpf.c b/drivers/media/platform/vsp1/vsp1_wpf.c index 25a2ed6e2e18..32df109b119f 100644 --- a/drivers/media/platform/vsp1/vsp1_wpf.c +++ b/drivers/media/platform/vsp1/vsp1_wpf.c @@ -43,32 +43,90 @@ static inline void vsp1_wpf_write(struct vsp1_rwpf *wpf, enum wpf_flip_ctrl { WPF_CTRL_VFLIP = 0, WPF_CTRL_HFLIP = 1, - WPF_CTRL_MAX, }; +static int vsp1_wpf_set_rotation(struct vsp1_rwpf *wpf, unsigned int rotation) +{ + struct vsp1_video *video = wpf->video; + struct v4l2_mbus_framefmt *sink_format; + struct v4l2_mbus_framefmt *source_format; + bool rotate; + int ret = 0; + + /* + * Only consider the 0°/180° from/to 90°/270° modifications, the rest + * is taken care of by the flipping configuration. + */ + rotate = rotation == 90 || rotation == 270; + if (rotate == wpf->flip.rotate) + return 0; + + /* Changing rotation isn't allowed when buffers are allocated. */ + mutex_lock(&video->lock); + + if (vb2_is_busy(&video->queue)) { + ret = -EBUSY; + goto done; + } + + sink_format = vsp1_entity_get_pad_format(&wpf->entity, + wpf->entity.config, + RWPF_PAD_SINK); + source_format = vsp1_entity_get_pad_format(&wpf->entity, + wpf->entity.config, + RWPF_PAD_SOURCE); + + mutex_lock(&wpf->entity.lock); + + if (rotate) { + source_format->width = sink_format->height; + source_format->height = sink_format->width; + } else { + source_format->width = sink_format->width; + source_format->height = sink_format->height; + } + + wpf->flip.rotate = rotate; + + mutex_unlock(&wpf->entity.lock); + +done: + mutex_unlock(&video->lock); + return ret; +} + static int vsp1_wpf_s_ctrl(struct v4l2_ctrl *ctrl) { struct vsp1_rwpf *wpf = container_of(ctrl->handler, struct vsp1_rwpf, ctrls); - unsigned int i; + unsigned int rotation; u32 flip = 0; + int ret; - switch (ctrl->id) { - case V4L2_CID_HFLIP: - case V4L2_CID_VFLIP: - for (i = 0; i < WPF_CTRL_MAX; ++i) { - if (wpf->flip.ctrls[i]) - flip |= wpf->flip.ctrls[i]->val ? BIT(i) : 0; - } + /* Update the rotation. */ + rotation = wpf->flip.ctrls.rotate ? wpf->flip.ctrls.rotate->val : 0; + ret = vsp1_wpf_set_rotation(wpf, rotation); + if (ret < 0) + return ret; - spin_lock_irq(&wpf->flip.lock); - wpf->flip.pending = flip; - spin_unlock_irq(&wpf->flip.lock); - break; + /* + * Compute the flip value resulting from all three controls, with + * rotation by 180° flipping the image in both directions. Store the + * result in the pending flip field for the next frame that will be + * processed. + */ + if (wpf->flip.ctrls.vflip->val) + flip |= BIT(WPF_CTRL_VFLIP); - default: - return -EINVAL; - } + if (wpf->flip.ctrls.hflip && wpf->flip.ctrls.hflip->val) + flip |= BIT(WPF_CTRL_HFLIP); + + if (rotation == 180 || rotation == 270) + flip ^= BIT(WPF_CTRL_VFLIP) | BIT(WPF_CTRL_HFLIP); + + spin_lock_irq(&wpf->flip.lock); + wpf->flip.pending = flip; + spin_unlock_irq(&wpf->flip.lock); return 0; } @@ -89,10 +147,10 @@ static int wpf_init_controls(struct vsp1_rwpf *wpf) num_flip_ctrls = 0; } else if (vsp1->info->features & VSP1_HAS_WPF_HFLIP) { /* - * When horizontal flip is supported the WPF implements two - * controls (horizontal flip and vertical flip). + * When horizontal flip is supported the WPF implements three + * controls (horizontal flip, vertical flip and rotation). */ - num_flip_ctrls = 2; + num_flip_ctrls = 3; } else if (vsp1->info->features & VSP1_HAS_WPF_VFLIP) { /* * When only vertical flip is supported the WPF implements a @@ -107,17 +165,19 @@ static int wpf_init_controls(struct vsp1_rwpf *wpf) vsp1_rwpf_init_ctrls(wpf, num_flip_ctrls); if (num_flip_ctrls >= 1) { - wpf->flip.ctrls[WPF_CTRL_VFLIP] = + wpf->flip.ctrls.vflip = v4l2_ctrl_new_std(&wpf->ctrls, &vsp1_wpf_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); } - if (num_flip_ctrls == 2) { - wpf->flip.ctrls[WPF_CTRL_HFLIP] = + if (num_flip_ctrls == 3) { + wpf->flip.ctrls.hflip = v4l2_ctrl_new_std(&wpf->ctrls, &vsp1_wpf_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); - - v4l2_ctrl_cluster(2, wpf->flip.ctrls); + wpf->flip.ctrls.rotate = + v4l2_ctrl_new_std(&wpf->ctrls, &vsp1_wpf_ctrl_ops, + V4L2_CID_ROTATE, 0, 270, 90, 0); + v4l2_ctrl_cluster(3, &wpf->flip.ctrls.vflip); } if (wpf->ctrls.error) { @@ -222,8 +282,8 @@ static void wpf_configure(struct vsp1_entity *entity, const struct vsp1_format_info *fmtinfo = wpf->fmtinfo; struct vsp1_rwpf_memory mem = wpf->mem; unsigned int flip = wpf->flip.active; - unsigned int width = source_format->width; - unsigned int height = source_format->height; + unsigned int width = sink_format->width; + unsigned int height = sink_format->height; unsigned int offset; /* @@ -246,45 +306,78 @@ static void wpf_configure(struct vsp1_entity *entity, /* * Update the memory offsets based on flipping configuration. * The destination addresses point to the locations where the - * VSP starts writing to memory, which can be different corners - * of the image depending on vertical flipping. + * VSP starts writing to memory, which can be any corner of the + * image depending on the combination of flipping and rotation. */ - if (pipe->partitions > 1) { - const struct vsp1_format_info *fmtinfo = wpf->fmtinfo; - /* - * Horizontal flipping is handled through a line buffer - * and doesn't modify the start address, but still needs - * to be handled when image partitioning is in effect to - * order the partitions correctly. - */ - if (flip & BIT(WPF_CTRL_HFLIP)) - offset = format->width - pipe->partition.left - - pipe->partition.width; + /* + * First take the partition left coordinate into account. + * Compute the offset to order the partitions correctly on the + * output based on whether flipping is enabled. Consider + * horizontal flipping when rotation is disabled but vertical + * flipping when rotation is enabled, as rotating the image + * switches the horizontal and vertical directions. The offset + * is applied horizontally or vertically accordingly. + */ + if (flip & BIT(WPF_CTRL_HFLIP) && !wpf->flip.rotate) + offset = format->width - pipe->partition.left + - pipe->partition.width; + else if (flip & BIT(WPF_CTRL_VFLIP) && wpf->flip.rotate) + offset = format->height - pipe->partition.left + - pipe->partition.width; + else + offset = pipe->partition.left; + + for (i = 0; i < format->num_planes; ++i) { + unsigned int hsub = i > 0 ? fmtinfo->hsub : 1; + unsigned int vsub = i > 0 ? fmtinfo->vsub : 1; + + if (wpf->flip.rotate) + mem.addr[i] += offset / vsub + * format->plane_fmt[i].bytesperline; else - offset = pipe->partition.left; - - mem.addr[0] += offset * fmtinfo->bpp[0] / 8; - if (format->num_planes > 1) { - mem.addr[1] += offset / fmtinfo->hsub - * fmtinfo->bpp[1] / 8; - mem.addr[2] += offset / fmtinfo->hsub - * fmtinfo->bpp[2] / 8; - } + mem.addr[i] += offset / hsub + * fmtinfo->bpp[i] / 8; } if (flip & BIT(WPF_CTRL_VFLIP)) { - mem.addr[0] += (format->height - 1) + /* + * When rotating the output (after rotation) image + * height is equal to the partition width (before + * rotation). Otherwise it is equal to the output + * image height. + */ + if (wpf->flip.rotate) + height = pipe->partition.width; + else + height = format->height; + + mem.addr[0] += (height - 1) * format->plane_fmt[0].bytesperline; if (format->num_planes > 1) { - offset = (format->height / wpf->fmtinfo->vsub - 1) + offset = (height / fmtinfo->vsub - 1) * format->plane_fmt[1].bytesperline; mem.addr[1] += offset; mem.addr[2] += offset; } } + if (wpf->flip.rotate && !(flip & BIT(WPF_CTRL_HFLIP))) { + unsigned int hoffset = max(0, (int)format->width - 16); + + /* + * Compute the output coordinate. The partition + * horizontal (left) offset becomes a vertical offset. + */ + for (i = 0; i < format->num_planes; ++i) { + unsigned int hsub = i > 0 ? fmtinfo->hsub : 1; + + mem.addr[i] += hoffset / hsub + * fmtinfo->bpp[i] / 8; + } + } + /* * On Gen3 hardware the SPUVS bit has no effect on 3-planar * formats. Swap the U and V planes manually in that case. @@ -306,6 +399,9 @@ static void wpf_configure(struct vsp1_entity *entity, outfmt = fmtinfo->hwfmt << VI6_WPF_OUTFMT_WRFMT_SHIFT; + if (wpf->flip.rotate) + outfmt |= VI6_WPF_OUTFMT_ROT; + if (fmtinfo->alpha) outfmt |= VI6_WPF_OUTFMT_PXA; if (fmtinfo->swap_yc) @@ -367,9 +463,18 @@ static void wpf_configure(struct vsp1_entity *entity, VI6_WFP_IRQ_ENB_DFEE); } +static unsigned int wpf_max_width(struct vsp1_entity *entity, + struct vsp1_pipeline *pipe) +{ + struct vsp1_rwpf *wpf = to_rwpf(&entity->subdev); + + return wpf->flip.rotate ? 256 : wpf->max_width; +} + static const struct vsp1_entity_operations wpf_entity_ops = { .destroy = vsp1_wpf_destroy, .configure = wpf_configure, + .max_width = wpf_max_width, }; /* -----------------------------------------------------------------------------