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 <arun...@samsung.com>
Signed-off-by: Kilyeon Im <kilyeon...@samsung.com>
Reviewed-by: Sylwester Nawrocki <s.nawro...@samsung.com>
---
 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 <arun...@samsung.com>
+ *
+ * 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 <media/v4l2-ioctl.h>
+#include <media/videobuf2-dma-contig.h>
+
+#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 <arun...@samsung.com>
+ *
+ * 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 <linux/sizes.h>
+#include <linux/io.h>
+#include <linux/irqreturn.h>
+#include <linux/platform_device.h>
+#include <linux/sched.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+#include <linux/videodev2.h>
+
+#include <media/media-entity.h>
+#include <media/videobuf2-core.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mediabus.h>
+#include <media/s5p_fimc.h>
+
+#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_ */
-- 
1.7.9.5

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