From patchwork Tue Nov 5 12:13:23 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arun Kumar K X-Patchwork-Id: 3140681 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 94EE8BEEB2 for ; Tue, 5 Nov 2013 12:14:17 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A7A032061E for ; Tue, 5 Nov 2013 12:14:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F306120623 for ; Tue, 5 Nov 2013 12:14:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754608Ab3KEMNy (ORCPT ); Tue, 5 Nov 2013 07:13:54 -0500 Received: from mail-pa0-f42.google.com ([209.85.220.42]:33799 "EHLO mail-pa0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754607Ab3KEMNx (ORCPT ); Tue, 5 Nov 2013 07:13:53 -0500 Received: by mail-pa0-f42.google.com with SMTP id kp14so8685884pab.1 for ; Tue, 05 Nov 2013 04:13:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=VbtOWzNODbgKW2ZkZ75gptikQO96VKHW+C1b5lvcBiE=; b=ptEfWTcY8tpoOGOSmV2MURknCxWhdfVoUFz9DSE01cErnpCTYyFMtaFMT34boppkhB Ka7H7GEB0jGMHjqv+p1aSZtYbjtYRblhuGRdH1woR+HgpaWyYE8lU7XK7TiomlYs2xhU VhdZCyeYtzNDbvpuJ/e3GonBDLVj0qkpQKHEp0lnNoCmGcfZzpC4JXm/ZRE/eWBiow8/ rECx0UPjyHzVjt13SMdsM6ms+RJ5BNvgf9YCD5+eG+JNCY5cmZVDTBJ6ixcjJW53m8Xi 0b/0ccJwJ4XJq8sMdrlHGM5DCRe2t7L/X7u6sBPpriYHh0yoMXSWnIaanVLOOpYfNWR+ uu2g== X-Received: by 10.68.196.69 with SMTP id ik5mr11268704pbc.132.1383653631989; Tue, 05 Nov 2013 04:13:51 -0800 (PST) Received: from localhost.localdomain ([115.113.119.130]) by mx.google.com with ESMTPSA id n10sm34266358pbg.28.2013.11.05.04.13.48 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 05 Nov 2013 04:13:51 -0800 (PST) From: Arun Kumar K To: linux-media@vger.kernel.org, linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org Cc: s.nawrocki@samsung.com, shaik.ameer@samsung.com, kilyeon.im@samsung.com, arunkk.samsung@gmail.com Subject: [PATCH v12 06/12] [media] exynos5-fimc-is: Add scaler subdev Date: Tue, 5 Nov 2013 17:43:23 +0530 Message-Id: <1383653610-11835-7-git-send-email-arun.kk@samsung.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1383653610-11835-1-git-send-email-arun.kk@samsung.com> References: <1383653610-11835-1-git-send-email-arun.kk@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,RP_MATCHES_RCVD,T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=ham 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 FIMC-IS has two hardware scalers named as scaler-codec and scaler-preview. This patch adds the common code handling the video nodes and subdevs of both the scalers. Signed-off-by: Arun Kumar K Signed-off-by: Kilyeon Im Reviewed-by: Sylwester Nawrocki --- drivers/media/platform/exynos5-is/fimc-is-scaler.c | 476 ++++++++++++++++++++ drivers/media/platform/exynos5-is/fimc-is-scaler.h | 106 +++++ 2 files changed, 582 insertions(+) create mode 100644 drivers/media/platform/exynos5-is/fimc-is-scaler.c create mode 100644 drivers/media/platform/exynos5-is/fimc-is-scaler.h diff --git a/drivers/media/platform/exynos5-is/fimc-is-scaler.c b/drivers/media/platform/exynos5-is/fimc-is-scaler.c new file mode 100644 index 0000000..029eb8b --- /dev/null +++ b/drivers/media/platform/exynos5-is/fimc-is-scaler.c @@ -0,0 +1,476 @@ +/* + * Samsung EXYNOS5250 FIMC-IS (Imaging Subsystem) driver + * + * Copyright (C) 2013 Samsung Electronics Co., Ltd. + * Arun Kumar K + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include + +#include "fimc-is.h" + +#define IS_SCALER_DRV_NAME "fimc-is-scaler" + +static const struct fimc_is_fmt formats[] = { + { + .name = "YUV 4:2:0 3p MultiPlanar", + .fourcc = V4L2_PIX_FMT_YUV420M, + .depth = {8, 2, 2}, + .num_planes = 3, + }, + { + .name = "YUV 4:2:0 2p MultiPlanar", + .fourcc = V4L2_PIX_FMT_NV12M, + .depth = {8, 4}, + .num_planes = 2, + }, + { + .name = "YUV 4:2:2 1p MultiPlanar", + .fourcc = V4L2_PIX_FMT_NV16, + .depth = {16}, + .num_planes = 1, + }, +}; +#define NUM_FORMATS ARRAY_SIZE(formats) + +static const struct fimc_is_fmt *find_format(struct v4l2_format *f) +{ + unsigned int i; + + for (i = 0; i < NUM_FORMATS; i++) { + if (formats[i].fourcc == f->fmt.pix_mp.pixelformat) + return &formats[i]; + } + return NULL; +} + +static int scaler_video_capture_start_streaming(struct vb2_queue *vq, + unsigned int count) +{ + struct fimc_is_scaler *ctx = vb2_get_drv_priv(vq); + int ret; + + ret = fimc_is_pipeline_scaler_start(ctx->pipeline, + ctx->scaler_id, + vq->num_buffers, + ctx->fmt->num_planes); + if (ret) { + v4l2_err(&ctx->subdev, "Scaler start failed.\n"); + return -EINVAL; + } + + set_bit(STATE_RUNNING, &ctx->capture_state); + return 0; +} + +static int scaler_video_capture_stop_streaming(struct vb2_queue *vq) +{ + struct fimc_is_scaler *ctx = vb2_get_drv_priv(vq); + struct fimc_is_buf *buf; + int ret; + + ret = fimc_is_pipeline_scaler_stop(ctx->pipeline, ctx->scaler_id); + if (ret) + v4l2_info(&ctx->subdev, "Scaler already stopped.\n"); + + /* Release un-used buffers */ + while (!list_empty(&ctx->wait_queue)) { + buf = fimc_is_scaler_wait_queue_get(ctx); + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); + } + while (!list_empty(&ctx->run_queue)) { + buf = fimc_is_scaler_run_queue_get(ctx); + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); + } + + clear_bit(STATE_RUNNING, &ctx->capture_state); + return 0; +} + +static int scaler_video_capture_queue_setup(struct vb2_queue *vq, + const struct v4l2_format *pfmt, + unsigned int *num_buffers, unsigned int *num_planes, + unsigned int sizes[], void *allocators[]) +{ + struct fimc_is_scaler *ctx = vb2_get_drv_priv(vq); + const struct fimc_is_fmt *fmt = ctx->fmt; + unsigned int wh; + int i; + + if (!fmt) + return -EINVAL; + + *num_planes = fmt->num_planes; + wh = ctx->width * ctx->height; + + for (i = 0; i < *num_planes; i++) { + allocators[i] = ctx->alloc_ctx; + sizes[i] = (wh * fmt->depth[i]) / 8; + } + return 0; +} + +static int scaler_video_capture_buffer_init(struct vb2_buffer *vb) +{ + struct vb2_queue *vq = vb->vb2_queue; + struct fimc_is_scaler *ctx = vb2_get_drv_priv(vq); + struct fimc_is_buf *buf = container_of(vb, struct fimc_is_buf, vb); + const struct fimc_is_fmt *fmt; + int i; + + fmt = ctx->fmt; + for (i = 0; i < fmt->num_planes; i++) + buf->paddr[i] = vb2_dma_contig_plane_dma_addr(vb, i); + + return 0; +} + +static int scaler_video_capture_buffer_prepare(struct vb2_buffer *vb) +{ + struct vb2_queue *vq = vb->vb2_queue; + struct fimc_is_scaler *ctx = vb2_get_drv_priv(vq); + int i; + + for (i = 0; i < ctx->fmt->num_planes; i++) { + unsigned long size = (ctx->width * ctx->height * + ctx->fmt->depth[i]) / 8; + + if (vb2_plane_size(vb, i) < size) { + v4l2_err(&ctx->subdev, + "User buffer too small (%ld < %ld)\n", + vb2_plane_size(vb, i), size); + return -EINVAL; + } + vb2_set_plane_payload(vb, i, size); + } + + return 0; +} + +static void scaler_video_capture_buffer_queue(struct vb2_buffer *vb) +{ + struct vb2_queue *vq = vb->vb2_queue; + struct fimc_is_scaler *ctx = vb2_get_drv_priv(vq); + struct fimc_is_buf *buf = container_of(vb, struct fimc_is_buf, vb); + + /* Add buffer to the wait queue */ + fimc_is_pipeline_buf_lock(ctx->pipeline); + fimc_is_scaler_wait_queue_add(ctx, buf); + fimc_is_pipeline_buf_unlock(ctx->pipeline); +} + +static const struct vb2_ops scaler_video_capture_qops = { + .queue_setup = scaler_video_capture_queue_setup, + .buf_init = scaler_video_capture_buffer_init, + .buf_prepare = scaler_video_capture_buffer_prepare, + .buf_queue = scaler_video_capture_buffer_queue, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, + .start_streaming = scaler_video_capture_start_streaming, + .stop_streaming = scaler_video_capture_stop_streaming, +}; + +static const struct v4l2_file_operations scaler_video_capture_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .release = vb2_fop_release, + .poll = vb2_fop_poll, + .unlocked_ioctl = video_ioctl2, + .mmap = vb2_fop_mmap, +}; + +/* + * Video node ioctl operations + */ +static int scaler_querycap_capture(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + struct fimc_is_scaler *ctx = video_drvdata(file); + char *name = (ctx->scaler_id == SCALER_SCC) ? + "fimc-is-scc" : "fimc-is-scp"; + + strncpy(cap->driver, name, sizeof(cap->driver) - 1); + strncpy(cap->card, name, sizeof(cap->card) - 1); + snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", + name); + cap->device_caps = V4L2_CAP_STREAMING; + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; + return 0; +} + +static int scaler_enum_fmt_mplane(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + const struct fimc_is_fmt *fmt; + + if (f->index >= NUM_FORMATS) + return -EINVAL; + + fmt = &formats[f->index]; + strlcpy(f->description, fmt->name, sizeof(f->description)); + f->pixelformat = fmt->fourcc; + return 0; +} + +static int scaler_g_fmt_mplane(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct fimc_is_scaler *ctx = video_drvdata(file); + struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp; + const struct fimc_is_fmt *fmt = ctx->fmt; + int i; + + for (i = 0; i < fmt->num_planes; i++) { + struct v4l2_plane_pix_format *plane_fmt = &pixm->plane_fmt[i]; + plane_fmt->bytesperline = (ctx->width * fmt->depth[i]) / 8; + plane_fmt->sizeimage = plane_fmt->bytesperline * ctx->height; + memset(plane_fmt->reserved, 0, sizeof(plane_fmt->reserved)); + } + + pixm->num_planes = fmt->num_planes; + pixm->pixelformat = fmt->fourcc; + pixm->width = ctx->width; + pixm->height = ctx->height; + pixm->field = V4L2_FIELD_NONE; + pixm->colorspace = V4L2_COLORSPACE_JPEG; + memset(pixm->reserved, 0, sizeof(pixm->reserved)); + + return 0; +} + +static int scaler_try_fmt_mplane(struct file *file, void *priv, + struct v4l2_format *f) +{ + const struct fimc_is_fmt *fmt; + struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp; + u32 i; + + fmt = find_format(f); + if (!fmt) + fmt = &formats[0]; + + v4l_bound_align_image(&pixm->width, SCALER_MIN_WIDTH, + SCALER_MAX_WIDTH, 0, + &pixm->height, SCALER_MIN_HEIGHT, + SCALER_MAX_HEIGHT, 0, 0); + + for (i = 0; i < fmt->num_planes; i++) { + struct v4l2_plane_pix_format *plane_fmt = &pixm->plane_fmt[i]; + + plane_fmt->bytesperline = (pixm->width * fmt->depth[i]) / 8; + plane_fmt->sizeimage = (pixm->width * pixm->height * + fmt->depth[i]) / 8; + memset(plane_fmt->reserved, 0, sizeof(plane_fmt->reserved)); + } + pixm->num_planes = fmt->num_planes; + pixm->pixelformat = fmt->fourcc; + pixm->colorspace = V4L2_COLORSPACE_JPEG; + pixm->field = V4L2_FIELD_NONE; + memset(pixm->reserved, 0, sizeof(pixm->reserved)); + + return 0; +} + +static int scaler_s_fmt_mplane(struct file *file, void *priv, + struct v4l2_format *f) +{ + struct fimc_is_scaler *ctx = video_drvdata(file); + const struct fimc_is_fmt *fmt; + struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp; + int ret; + + ret = scaler_try_fmt_mplane(file, priv, f); + if (ret) + return ret; + + /* Get format type */ + fmt = find_format(f); + if (!fmt) { + fmt = &formats[0]; + pixm->pixelformat = fmt->fourcc; + pixm->num_planes = fmt->num_planes; + } + + /* Save values to context */ + ctx->fmt = fmt; + ctx->width = pixm->width; + ctx->height = pixm->height; + set_bit(STATE_INIT, &ctx->capture_state); + return 0; +} + +static int scaler_reqbufs(struct file *file, void *priv, + struct v4l2_requestbuffers *reqbufs) +{ + struct fimc_is_scaler *ctx = video_drvdata(file); + int ret; + + reqbufs->count = max_t(u32, FIMC_IS_SCALER_REQ_BUFS_MIN, + reqbufs->count); + ret = vb2_reqbufs(&ctx->vbq, reqbufs); + if (ret) { + v4l2_err(&ctx->subdev, "vb2 req buffers failed\n"); + return ret; + } + + if (reqbufs->count < FIMC_IS_SCALER_REQ_BUFS_MIN) { + reqbufs->count = 0; + vb2_reqbufs(&ctx->vbq, reqbufs); + return -ENOMEM; + } + set_bit(STATE_BUFS_ALLOCATED, &ctx->capture_state); + return 0; +} + +static const struct v4l2_ioctl_ops scaler_video_capture_ioctl_ops = { + .vidioc_querycap = scaler_querycap_capture, + .vidioc_enum_fmt_vid_cap_mplane = scaler_enum_fmt_mplane, + .vidioc_try_fmt_vid_cap_mplane = scaler_try_fmt_mplane, + .vidioc_s_fmt_vid_cap_mplane = scaler_s_fmt_mplane, + .vidioc_g_fmt_vid_cap_mplane = scaler_g_fmt_mplane, + .vidioc_reqbufs = scaler_reqbufs, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, +}; + +static int scaler_subdev_registered(struct v4l2_subdev *sd) +{ + struct fimc_is_scaler *ctx = v4l2_get_subdevdata(sd); + struct vb2_queue *q = &ctx->vbq; + struct video_device *vfd = &ctx->vfd; + int ret; + + mutex_init(&ctx->video_lock); + + memset(vfd, 0, sizeof(*vfd)); + if (ctx->scaler_id == SCALER_SCC) + snprintf(vfd->name, sizeof(vfd->name), "fimc-is-scaler.codec"); + else + snprintf(vfd->name, sizeof(vfd->name), + "fimc-is-scaler.preview"); + + vfd->fops = &scaler_video_capture_fops; + vfd->ioctl_ops = &scaler_video_capture_ioctl_ops; + vfd->v4l2_dev = sd->v4l2_dev; + vfd->release = video_device_release_empty; + vfd->lock = &ctx->video_lock; + vfd->queue = q; + vfd->vfl_dir = VFL_DIR_RX; + set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags); + + memset(q, 0, sizeof(*q)); + q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; + q->io_modes = VB2_MMAP | VB2_DMABUF; + q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->ops = &scaler_video_capture_qops; + q->mem_ops = &vb2_dma_contig_memops; + q->buf_struct_size = sizeof(struct fimc_is_buf); + q->drv_priv = ctx; + + ret = vb2_queue_init(q); + if (ret < 0) + return ret; + + ctx->vd_pad.flags = MEDIA_PAD_FL_SINK; + ret = media_entity_init(&vfd->entity, 1, &ctx->vd_pad, 0); + if (ret < 0) + return ret; + + video_set_drvdata(vfd, ctx); + + ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1); + if (ret < 0) { + media_entity_cleanup(&vfd->entity); + return ret; + } + + v4l2_info(sd->v4l2_dev, "Registered %s as /dev/%s\n", + vfd->name, video_device_node_name(vfd)); + return 0; +} + +static void scaler_subdev_unregistered(struct v4l2_subdev *sd) +{ + struct fimc_is_scaler *ctx = v4l2_get_subdevdata(sd); + + if (ctx && video_is_registered(&ctx->vfd)) + video_unregister_device(&ctx->vfd); +} + +static const struct v4l2_subdev_internal_ops scaler_subdev_internal_ops = { + .registered = scaler_subdev_registered, + .unregistered = scaler_subdev_unregistered, +}; + +static struct v4l2_subdev_ops scaler_subdev_ops; + +int fimc_is_scaler_subdev_create(struct fimc_is_scaler *ctx, + enum fimc_is_scaler_id scaler_id, + struct vb2_alloc_ctx *alloc_ctx, + struct fimc_is_pipeline *pipeline) +{ + struct v4l2_ctrl_handler *handler = &ctx->ctrl_handler; + struct v4l2_subdev *sd = &ctx->subdev; + int ret; + + ctx->scaler_id = scaler_id; + ctx->alloc_ctx = alloc_ctx; + ctx->pipeline = pipeline; + ctx->fmt = &formats[0]; + ctx->width = SCALER_DEF_WIDTH; + ctx->height = SCALER_DEF_HEIGHT; + init_waitqueue_head(&ctx->event_q); + INIT_LIST_HEAD(&ctx->wait_queue); + INIT_LIST_HEAD(&ctx->run_queue); + + /* Initialize scaler subdev */ + v4l2_subdev_init(sd, &scaler_subdev_ops); + sd->owner = THIS_MODULE; + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + if (scaler_id == SCALER_SCC) + snprintf(sd->name, sizeof(sd->name), "fimc-is-scc"); + else + snprintf(sd->name, sizeof(sd->name), "fimc-is-scp"); + + ctx->subdev_pads[SCALER_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK; + ctx->subdev_pads[SCALER_SD_PAD_SRC_FIFO].flags = MEDIA_PAD_FL_SOURCE; + ctx->subdev_pads[SCALER_SD_PAD_SRC_DMA].flags = MEDIA_PAD_FL_SOURCE; + ret = media_entity_init(&sd->entity, ISP_SD_PADS_NUM, + ctx->subdev_pads, 0); + if (ret < 0) + return ret; + + ret = v4l2_ctrl_handler_init(handler, 1); + if (handler->error) + goto err_ctrl; + + sd->ctrl_handler = handler; + sd->internal_ops = &scaler_subdev_internal_ops; + v4l2_set_subdevdata(sd, ctx); + + return 0; +err_ctrl: + media_entity_cleanup(&sd->entity); + v4l2_ctrl_handler_free(handler); + return ret; +} + +void fimc_is_scaler_subdev_destroy(struct fimc_is_scaler *ctx) +{ + struct v4l2_subdev *sd = &ctx->subdev; + + v4l2_device_unregister_subdev(sd); + media_entity_cleanup(&sd->entity); + v4l2_ctrl_handler_free(&ctx->ctrl_handler); + v4l2_set_subdevdata(sd, NULL); +} + diff --git a/drivers/media/platform/exynos5-is/fimc-is-scaler.h b/drivers/media/platform/exynos5-is/fimc-is-scaler.h new file mode 100644 index 0000000..97a9d0d --- /dev/null +++ b/drivers/media/platform/exynos5-is/fimc-is-scaler.h @@ -0,0 +1,106 @@ +/* + * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver + * + * Copyright (C) 2013 Samsung Electronics Co., Ltd. + * Arun Kumar K + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef FIMC_IS_SCALER_H_ +#define FIMC_IS_SCALER_H_ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#include "fimc-is-core.h" + +#define SCALER_SD_PAD_SINK 0 +#define SCALER_SD_PAD_SRC_FIFO 1 +#define SCALER_SD_PAD_SRC_DMA 2 +#define SCALER_SD_PADS_NUM 3 + +#define SCALER_MAX_BUFS 32 +#define SCALER_MAX_PLANES 3 + +#define FIMC_IS_SCALER_REQ_BUFS_MIN 2 + +#define SCALER_DEF_WIDTH 1280 +#define SCALER_DEF_HEIGHT 720 +#define SCALER_MAX_WIDTH 4808 +#define SCALER_MAX_HEIGHT 3356 +#define SCALER_MIN_WIDTH 32 +#define SCALER_MIN_HEIGHT 32 + +/** + * struct fimc_is_scaler - fimc-is scaler structure + * @vfd: video device node + * @fh: v4l2 file handle + * @alloc_ctx: videobuf2 memory allocator context + * @subdev: fimc-is-scaler subdev + * @vd_pad: media pad for the output video node + * @subdev_pads: the subdev media pads + * @ctrl_handler: v4l2 control handler + * @video_lock: video lock mutex + * @event_q: notifies scaler events + * @pipeline: pipeline instance for this scaler context + * @scaler_id: distinguishes scaler preview or scaler codec + * @vbq: vb2 buffers queue for ISP output video node + * @wait_queue: list holding buffers waiting to be queued to HW + * @wait_queue_cnt: wait queue number of buffers + * @run_queue: list holding buffers queued to HW + * @run_queue_cnt: run queue number of buffers + * @capture_bufs: scaler capture buffers array + * @fmt: capture plane format for scaler + * @width: user configured output width + * @height: user configured output height + * @capture_state: state of the capture video node operations + */ +struct fimc_is_scaler { + struct video_device vfd; + struct v4l2_fh fh; + struct vb2_alloc_ctx *alloc_ctx; + struct v4l2_subdev subdev; + struct media_pad vd_pad; + struct media_pad subdev_pads[SCALER_SD_PADS_NUM]; + struct v4l2_mbus_framefmt subdev_fmt; + struct v4l2_ctrl_handler ctrl_handler; + + struct mutex video_lock; + wait_queue_head_t event_q; + + struct fimc_is_pipeline *pipeline; + enum fimc_is_scaler_id scaler_id; + + struct vb2_queue vbq; + struct list_head wait_queue; + unsigned int wait_queue_cnt; + struct list_head run_queue; + unsigned int run_queue_cnt; + + const struct fimc_is_fmt *fmt; + unsigned int width; + unsigned int height; + unsigned long capture_state; +}; + +int fimc_is_scaler_subdev_create(struct fimc_is_scaler *ctx, + enum fimc_is_scaler_id scaler_id, + struct vb2_alloc_ctx *alloc_ctx, + struct fimc_is_pipeline *pipeline); +void fimc_is_scaler_subdev_destroy(struct fimc_is_scaler *scaler); + +#endif /* FIMC_IS_SCALER_H_ */