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.kk@xxxxxxxxxxx>
Signed-off-by: Kilyeon Im <kilyeon.im@xxxxxxxxxxx>
---
drivers/media/platform/exynos5-is/fimc-is-scaler.c | 458 ++++++++++++++++++++
drivers/media/platform/exynos5-is/fimc-is-scaler.h | 112 +++++
2 files changed, 570 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..7cff186
--- /dev/null
+++ b/drivers/media/platform/exynos5-is/fimc-is-scaler.c
@@ -0,0 +1,458 @@
+/*
+ * Samsung EXYNOS5250 FIMC-IS (Imaging Subsystem) driver
+ *
+ * Copyright (C) 2013 Samsung Electronics Co., Ltd.
+ * Arun Kumar K <arun.kk@xxxxxxxxxxx>
+ *
+ * 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;
+
+ /* Scaler start */
+ ret = fimc_is_pipeline_scaler_start(ctx->pipeline,
+ ctx->scaler_id,
+ (unsigned int **)ctx->buf_paddr,
+ vq->num_buffers,
+ ctx->fmt->num_planes);
+ if (ret) {
+ pr_err("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);
+ int ret;
+
+ /* Scaler stop */
+ ret = fimc_is_pipeline_scaler_stop(ctx->pipeline, ctx->scaler_id);
+ if (ret)
+ pr_debug("Scaler already stopped.\n");
+
+ 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;
+ const struct fimc_is_fmt *fmt;
+ int i;
+
+ buf = &ctx->capture_bufs[vb->v4l2_buf.index];
+ /* Initialize buffer */
+ buf->vb = vb;
+ fmt = ctx->fmt;
+ for (i = 0; i < fmt->num_planes; i++)
+ buf->paddr[i] = vb2_dma_contig_plane_dma_addr(vb, i);
+
+ ctx->cap_buf_cnt++;
+ 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;
+
+ buf = &ctx->capture_bufs[vb->v4l2_buf.index];
+
+ /* Add buffer to the wait queue */
+ pr_debug("Add buffer %d in Scaler %d\n",
+ vb->v4l2_buf.index, ctx->scaler_id);
+ fimc_is_pipeline_buf_lock(ctx->pipeline);
+ fimc_is_scaler_wait_queue_add(ctx, buf);
+ fimc_is_pipeline_buf_unlock(ctx->pipeline);
+}
+
+static void scaler_lock(struct vb2_queue *vq)
+{
+ struct fimc_is_scaler *ctx = vb2_get_drv_priv(vq);
+ mutex_lock(&ctx->video_lock);
+}
+
+static void scaler_unlock(struct vb2_queue *vq)
+{
+ struct fimc_is_scaler *ctx = vb2_get_drv_priv(vq);
+ mutex_unlock(&ctx->video_lock);
+}
+
+static const struct vb2_ops scaler_video_capture_qops = {
+ .queue_setup = scaler_video_capture_queue_setup,
+ .buf_init = scaler_video_capture_buffer_init,
+ .buf_queue = scaler_video_capture_buffer_queue,
+ .wait_prepare = scaler_unlock,
+ .wait_finish = scaler_lock,
+ .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)
+{
+ strncpy(cap->driver, IS_SCALER_DRV_NAME, sizeof(cap->driver) - 1);
+ strncpy(cap->card, IS_SCALER_DRV_NAME, sizeof(cap->card) - 1);
+ snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
+ IS_SCALER_DRV_NAME);
+ cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE;
+ 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;
+ 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];
+ f->fmt.pix_mp.pixelformat = fmt->fourcc;
+ f->fmt.pix_mp.num_planes = fmt->num_planes;
+ }
+
+ /* Save values to context */
+ ctx->fmt = fmt;
+ ctx->width = f->fmt.pix_mp.width;
+ ctx->height = f->fmt.pix_mp.height;
+ ctx->pipeline->scaler_width[ctx->scaler_id] = ctx->width;
+ ctx->pipeline->scaler_height[ctx->scaler_id] = ctx->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) {
+ pr_err("vb2 req buffers failed\n");
+ return ret;
+ }
+
+ ctx->cap_buf_cnt = 0;
+ 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->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;
+
+ /* Set context data */
+ 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..6d3d831
--- /dev/null
+++ b/drivers/media/platform/exynos5-is/fimc-is-scaler.h
@@ -0,0 +1,112 @@
+/*
+ * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
+ *
+ * Copyright (C) 2013 Samsung Electronics Co., Ltd.
+ * Arun Kumar K <arun.kk@xxxxxxxxxxx>
+ *
+ * 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
+ * @cap_buf_cnt: number of capture buffers in use
+ * @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
+ * @buf_paddr: holds the physical address of capture buffers
+ */
+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;
+
+ struct fimc_is_buf capture_bufs[SCALER_MAX_BUFS];
+ unsigned int cap_buf_cnt;
+
+ const struct fimc_is_fmt *fmt;
+ unsigned int width;
+ unsigned int height;
+ unsigned long capture_state;
+ unsigned int buf_paddr[SCALER_MAX_BUFS][SCALER_MAX_PLANES];
+};
+
+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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