This patch adds support for the interleaved JPEG/UYVY
V4L2_PIX_FMT_S5C_UYVY_JPG image format.

To ensure the size of allocated buffers is correct for a subdev
configuration during VIDIOC_STREAMON ioctl, an additional check
is added the video at the data pipeline validation routine.

Flag FMT_FLAGS_COMPRESSED indicates the buffer size must be
retrieved from a sensor subdev, by means of V4L2_CID_FRAMESIZE
control.

Signed-off-by: Sylwester Nawrocki <s.nawro...@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.p...@samsung.com>
---
 drivers/media/platform/s5p-fimc/fimc-capture.c | 86 ++++++++++++++++++++------
 drivers/media/platform/s5p-fimc/fimc-core.c    | 16 ++++-
 drivers/media/platform/s5p-fimc/fimc-core.h    | 26 ++++++--
 drivers/media/platform/s5p-fimc/fimc-reg.c     |  3 +-
 drivers/media/platform/s5p-fimc/mipi-csis.c    |  6 +-
 5 files changed, 111 insertions(+), 26 deletions(-)

diff --git a/drivers/media/platform/s5p-fimc/fimc-capture.c 
b/drivers/media/platform/s5p-fimc/fimc-capture.c
index 8e413dd..ab062f3 100644
--- a/drivers/media/platform/s5p-fimc/fimc-capture.c
+++ b/drivers/media/platform/s5p-fimc/fimc-capture.c
@@ -349,6 +349,8 @@ static int queue_setup(struct vb2_queue *vq, const struct 
v4l2_format *pfmt,
                unsigned int size = (wh * fmt->depth[i]) / 8;
                if (pixm)
                        sizes[i] = max(size, pixm->plane_fmt[i].sizeimage);
+               else if (fimc_fmt_is_user_defined(fmt->color))
+                       sizes[i] = frame->payload[i];
                else
                        sizes[i] = max_t(u32, size, frame->payload[i]);
 
@@ -608,10 +610,10 @@ static struct fimc_fmt *fimc_capture_try_format(struct 
fimc_ctx *ctx,
        u32 mask = FMT_FLAGS_CAM;
        struct fimc_fmt *ffmt;
 
-       /* Color conversion from/to JPEG is not supported */
+       /* Conversion from/to JPEG or User Defined format is not supported */
        if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE &&
-           fimc_fmt_is_jpeg(ctx->s_frame.fmt->color))
-               *code = V4L2_MBUS_FMT_JPEG_1X8;
+           fimc_fmt_is_user_defined(ctx->s_frame.fmt->color))
+               *code = ctx->s_frame.fmt->mbus_code;
 
        if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad != FIMC_SD_PAD_SINK)
                mask |= FMT_FLAGS_M2M;
@@ -625,18 +627,19 @@ static struct fimc_fmt *fimc_capture_try_format(struct 
fimc_ctx *ctx,
                *fourcc = ffmt->fourcc;
 
        if (pad == FIMC_SD_PAD_SINK) {
-               max_w = fimc_fmt_is_jpeg(ffmt->color) ?
+               max_w = fimc_fmt_is_user_defined(ffmt->color) ?
                        pl->scaler_dis_w : pl->scaler_en_w;
                /* Apply the camera input interface pixel constraints */
                v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4,
                                      height, max_t(u32, *height, 32),
                                      FIMC_CAMIF_MAX_HEIGHT,
-                                     fimc_fmt_is_jpeg(ffmt->color) ? 3 : 1,
+                                     fimc_fmt_is_user_defined(ffmt->color) ?
+                                     3 : 1,
                                      0);
                return ffmt;
        }
        /* Can't scale or crop in transparent (JPEG) transfer mode */
-       if (fimc_fmt_is_jpeg(ffmt->color)) {
+       if (fimc_fmt_is_user_defined(ffmt->color)) {
                *width  = ctx->s_frame.f_width;
                *height = ctx->s_frame.f_height;
                return ffmt;
@@ -681,7 +684,7 @@ static void fimc_capture_try_selection(struct fimc_ctx *ctx,
        u32 max_sc_h, max_sc_v;
 
        /* In JPEG transparent transfer mode cropping is not supported */
-       if (fimc_fmt_is_jpeg(ctx->d_frame.fmt->color)) {
+       if (fimc_fmt_is_user_defined(ctx->d_frame.fmt->color)) {
                r->width  = sink->f_width;
                r->height = sink->f_height;
                r->left   = r->top = 0;
@@ -844,6 +847,23 @@ static int fimc_pipeline_try_format(struct fimc_ctx *ctx,
        return 0;
 }
 
+static int get_sensor_frame_size(struct v4l2_subdev *sensor, __u32 *size)
+{
+       struct v4l2_ctrl *ctrl;
+
+       ctrl = v4l2_ctrl_find(sensor->ctrl_handler, V4L2_CID_FRAMESIZE);
+       if (ctrl == NULL)
+               return -ENXIO;
+
+       *size = v4l2_ctrl_g_ctrl(ctrl);
+
+       if (*size <= FIMC_MAX_JPEG_BUF_SIZE)
+               return 0;
+
+       v4l2_err(sensor->v4l2_dev, "Unsupported buffer size: %u\n", *size);
+       return -EINVAL;
+}
+
 static int fimc_cap_g_fmt_mplane(struct file *file, void *fh,
                                 struct v4l2_format *f)
 {
@@ -862,7 +882,7 @@ static int fimc_cap_try_fmt_mplane(struct file *file, void 
*fh,
        struct v4l2_mbus_framefmt mf;
        struct fimc_fmt *ffmt = NULL;
 
-       if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
+       if (fimc_jpeg_fourcc(pix->pixelformat)) {
                fimc_capture_try_format(ctx, &pix->width, &pix->height,
                                        NULL, &pix->pixelformat,
                                        FIMC_SD_PAD_SINK);
@@ -876,25 +896,32 @@ static int fimc_cap_try_fmt_mplane(struct file *file, 
void *fh,
                return -EINVAL;
 
        if (!fimc->vid_cap.user_subdev_api) {
-               mf.width  = pix->width;
+               mf.width = pix->width;
                mf.height = pix->height;
-               mf.code   = ffmt->mbus_code;
+               mf.code = ffmt->mbus_code;
                fimc_md_graph_lock(fimc);
                fimc_pipeline_try_format(ctx, &mf, &ffmt, false);
                fimc_md_graph_unlock(fimc);
-
-               pix->width       = mf.width;
-               pix->height      = mf.height;
+               pix->width = mf.width;
+               pix->height = mf.height;
                if (ffmt)
                        pix->pixelformat = ffmt->fourcc;
        }
 
        fimc_adjust_mplane_format(ffmt, pix->width, pix->height, pix);
+
+       if (ffmt->flags & FMT_FLAGS_COMPRESSED)
+               get_sensor_frame_size(fimc->pipeline.subdevs[IDX_SENSOR],
+                                     &pix->plane_fmt[0].sizeimage);
+
        return 0;
 }
 
-static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx, bool jpeg)
+static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx,
+                                       enum fimc_color_fmt color)
 {
+       bool jpeg = fimc_fmt_is_user_defined(color);
+
        ctx->scaler.enabled = !jpeg;
        fimc_ctrls_activate(ctx, !jpeg);
 
@@ -917,7 +944,7 @@ static int fimc_capture_set_format(struct fimc_dev *fimc, 
struct v4l2_format *f)
                return -EBUSY;
 
        /* Pre-configure format at camera interface input, for JPEG only */
-       if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
+       if (fimc_jpeg_fourcc(pix->pixelformat)) {
                fimc_capture_try_format(ctx, &pix->width, &pix->height,
                                        NULL, &pix->pixelformat,
                                        FIMC_SD_PAD_SINK);
@@ -950,7 +977,15 @@ static int fimc_capture_set_format(struct fimc_dev *fimc, 
struct v4l2_format *f)
        }
 
        fimc_adjust_mplane_format(ff->fmt, pix->width, pix->height, pix);
-       for (i = 0; i < ff->fmt->colplanes; i++)
+
+       if (ff->fmt->flags & FMT_FLAGS_COMPRESSED) {
+               ret = get_sensor_frame_size(fimc->pipeline.subdevs[IDX_SENSOR],
+                                           &pix->plane_fmt[0].sizeimage);
+               if (ret < 0)
+                       return ret;
+       }
+
+       for (i = 0; i < ff->fmt->memplanes; i++)
                ff->payload[i] = pix->plane_fmt[i].sizeimage;
 
        set_frame_bounds(ff, pix->width, pix->height);
@@ -958,7 +993,7 @@ static int fimc_capture_set_format(struct fimc_dev *fimc, 
struct v4l2_format *f)
        if (!(ctx->state & FIMC_COMPOSE))
                set_frame_crop(ff, 0, 0, pix->width, pix->height);
 
-       fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ff->fmt->color));
+       fimc_capture_mark_jpeg_xfer(ctx, ff->fmt->color);
 
        /* Reset cropping and set format at the camera interface input */
        if (!fimc->vid_cap.user_subdev_api) {
@@ -1060,6 +1095,21 @@ static int fimc_pipeline_validate(struct fimc_dev *fimc)
                    src_fmt.format.height != sink_fmt.format.height ||
                    src_fmt.format.code != sink_fmt.format.code)
                        return -EPIPE;
+
+               if (sd == fimc->pipeline.subdevs[IDX_SENSOR] &&
+                   fimc_user_defined_mbus_fmt(src_fmt.format.code)) {
+                       struct v4l2_plane_pix_format plane_fmt[FIMC_MAX_PLANES];
+                       struct fimc_frame *frame = &vid_cap->ctx->d_frame;
+                       unsigned int i;
+
+                       ret = get_sensor_frame_size(sd, 
&plane_fmt[0].sizeimage);
+                       if (ret < 0)
+                               return -EPIPE;
+                       for (i = 0; i < frame->fmt->memplanes; i++) {
+                               if (frame->payload[i] < plane_fmt[i].sizeimage)
+                                       return -EPIPE;
+                       }
+               }
        }
        return 0;
 }
@@ -1421,7 +1471,7 @@ static int fimc_subdev_set_fmt(struct v4l2_subdev *sd,
        /* Update RGB Alpha control state and value range */
        fimc_alpha_ctrl_update(ctx);
 
-       fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ffmt->color));
+       fimc_capture_mark_jpeg_xfer(ctx, ffmt->color);
 
        ff = fmt->pad == FIMC_SD_PAD_SINK ?
                &ctx->s_frame : &ctx->d_frame;
diff --git a/drivers/media/platform/s5p-fimc/fimc-core.c 
b/drivers/media/platform/s5p-fimc/fimc-core.c
index 1a44540..b3249b1 100644
--- a/drivers/media/platform/s5p-fimc/fimc-core.c
+++ b/drivers/media/platform/s5p-fimc/fimc-core.c
@@ -184,7 +184,16 @@ static struct fimc_fmt fimc_formats[] = {
                .memplanes      = 1,
                .colplanes      = 1,
                .mbus_code      = V4L2_MBUS_FMT_JPEG_1X8,
-               .flags          = FMT_FLAGS_CAM,
+               .flags          = FMT_FLAGS_CAM | FMT_FLAGS_COMPRESSED,
+       }, {
+               .name           = "S5C73MX interleaved JPEG/YUYV",
+               .fourcc         = V4L2_PIX_FMT_S5C_UYVY_JPG,
+               .color          = FIMC_FMT_UYVY_JPEG,
+               .depth          = { 8 },
+               .memplanes      = 1,
+               .colplanes      = 1,
+               .mbus_code      = V4L2_MBUS_FMT_S5C_UYVY_JPEG_1X8,
+               .flags          = FMT_FLAGS_CAM | FMT_FLAGS_COMPRESSED,
        },
 };
 
@@ -698,6 +707,11 @@ int fimc_fill_format(struct fimc_frame *frame, struct 
v4l2_format *f)
                if (frame->fmt->colplanes == 1) /* packed formats */
                        bpl = (bpl * frame->fmt->depth[0]) / 8;
                pixm->plane_fmt[i].bytesperline = bpl;
+
+               if (frame->fmt->flags & FMT_FLAGS_COMPRESSED) {
+                       pixm->plane_fmt[i].sizeimage = frame->payload[i];
+                       continue;
+               }
                pixm->plane_fmt[i].sizeimage = (frame->o_width *
                        frame->o_height * frame->fmt->depth[i]) / 8;
        }
diff --git a/drivers/media/platform/s5p-fimc/fimc-core.h 
b/drivers/media/platform/s5p-fimc/fimc-core.h
index 808ccc6..8e1a9e8 100644
--- a/drivers/media/platform/s5p-fimc/fimc-core.h
+++ b/drivers/media/platform/s5p-fimc/fimc-core.h
@@ -40,6 +40,8 @@
 #define SCALER_MAX_VRATIO      64
 #define DMA_MIN_SIZE           8
 #define FIMC_CAMIF_MAX_HEIGHT  0x2000
+#define FIMC_MAX_JPEG_BUF_SIZE SZ_8M
+#define FIMC_MAX_PLANES                3
 
 /* indices to the clocks array */
 enum {
@@ -83,7 +85,7 @@ enum fimc_datapath {
 };
 
 enum fimc_color_fmt {
-       FIMC_FMT_RGB444 = 0x10,
+       FIMC_FMT_RGB444 = 0x10,
        FIMC_FMT_RGB555,
        FIMC_FMT_RGB565,
        FIMC_FMT_RGB666,
@@ -95,14 +97,15 @@ enum fimc_color_fmt {
        FIMC_FMT_CBYCRY422,
        FIMC_FMT_CRYCBY422,
        FIMC_FMT_YCBCR444_LOCAL,
-       FIMC_FMT_JPEG = 0x40,
-       FIMC_FMT_RAW8 = 0x80,
+       FIMC_FMT_RAW8 = 0x40,
        FIMC_FMT_RAW10,
        FIMC_FMT_RAW12,
+       FIMC_FMT_JPEG = 0x80,
+       FIMC_FMT_UYVY_JPEG = 0x100,
 };
 
+#define fimc_fmt_is_user_defined(x) (!!((x) & 0x180))
 #define fimc_fmt_is_rgb(x) (!!((x) & 0x10))
-#define fimc_fmt_is_jpeg(x) (!!((x) & 0x40))
 
 #define IS_M2M(__strt) ((__strt) == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE || \
                        __strt == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
@@ -155,6 +158,7 @@ struct fimc_fmt {
 #define FMT_FLAGS_M2M_OUT      (1 << 2)
 #define FMT_FLAGS_M2M          (1 << 1 | 1 << 2)
 #define FMT_HAS_ALPHA          (1 << 3)
+#define FMT_FLAGS_COMPRESSED   (1 << 4)
 };
 
 /**
@@ -272,7 +276,7 @@ struct fimc_frame {
        u32     offs_v;
        u32     width;
        u32     height;
-       unsigned long           payload[VIDEO_MAX_PLANES];
+       unsigned int            payload[VIDEO_MAX_PLANES];
        struct fimc_addr        paddr;
        struct fimc_dma_offset  dma_offset;
        struct fimc_fmt         *fmt;
@@ -576,6 +580,18 @@ static inline int tiled_fmt(struct fimc_fmt *fmt)
        return fmt->fourcc == V4L2_PIX_FMT_NV12MT;
 }
 
+static inline bool fimc_jpeg_fourcc(u32 pixelformat)
+{
+       return (pixelformat == V4L2_PIX_FMT_JPEG ||
+               pixelformat == V4L2_PIX_FMT_S5C_UYVY_JPG);
+}
+
+static inline bool fimc_user_defined_mbus_fmt(u32 code)
+{
+       return (code == V4L2_MBUS_FMT_JPEG_1X8 ||
+               code == V4L2_MBUS_FMT_S5C_UYVY_JPEG_1X8);
+}
+
 /* Return the alpha component bit mask */
 static inline int fimc_get_alpha_mask(struct fimc_fmt *fmt)
 {
diff --git a/drivers/media/platform/s5p-fimc/fimc-reg.c 
b/drivers/media/platform/s5p-fimc/fimc-reg.c
index 0e3eb9c..db03152 100644
--- a/drivers/media/platform/s5p-fimc/fimc-reg.c
+++ b/drivers/media/platform/s5p-fimc/fimc-reg.c
@@ -625,7 +625,7 @@ int fimc_hw_set_camera_source(struct fimc_dev *fimc,
                                cfg |= FIMC_REG_CISRCFMT_ITU601_16BIT;
                } /* else defaults to ITU-R BT.656 8-bit */
        } else if (cam->bus_type == FIMC_MIPI_CSI2) {
-               if (fimc_fmt_is_jpeg(f->fmt->color))
+               if (fimc_fmt_is_user_defined(f->fmt->color))
                        cfg |= FIMC_REG_CISRCFMT_ITU601_8BIT;
        }
 
@@ -680,6 +680,7 @@ int fimc_hw_set_camera_type(struct fimc_dev *fimc,
                        tmp = FIMC_REG_CSIIMGFMT_YCBCR422_8BIT;
                        break;
                case V4L2_MBUS_FMT_JPEG_1X8:
+               case V4L2_MBUS_FMT_S5C_UYVY_JPEG_1X8:
                        tmp = FIMC_REG_CSIIMGFMT_USER(1);
                        cfg |= FIMC_REG_CIGCTRL_CAM_JPEG;
                        break;
diff --git a/drivers/media/platform/s5p-fimc/mipi-csis.c 
b/drivers/media/platform/s5p-fimc/mipi-csis.c
index 2f73d9e..e479fe0 100644
--- a/drivers/media/platform/s5p-fimc/mipi-csis.c
+++ b/drivers/media/platform/s5p-fimc/mipi-csis.c
@@ -145,7 +145,11 @@ static const struct csis_pix_format s5pcsis_formats[] = {
                .code = V4L2_MBUS_FMT_JPEG_1X8,
                .fmt_reg = S5PCSIS_CFG_FMT_USER(1),
                .data_alignment = 32,
-       },
+       }, {
+               .code = V4L2_MBUS_FMT_S5C_UYVY_JPEG_1X8,
+               .fmt_reg = S5PCSIS_CFG_FMT_USER(1),
+               .data_alignment = 32,
+       }
 };
 
 #define s5pcsis_write(__csis, __r, __v) writel(__v, __csis->regs + __r)
-- 
1.7.11.3

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