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authorHans Verkuil <hans.verkuil@cisco.com>2015-03-09 16:59:59 -0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-05-01 07:48:26 -0300
commit6eb40d594b886fbd9d45cffd7a7a1f989d8389b1 (patch)
treed15f49a9ff78920fd5dcc090591ab66011a26f8c
parentca657b28fd63f0f0971247e12727d286043b1d15 (diff)
[media] marvell-ccic: add planar support to dma-vmalloc
The dma-vmalloc implementation didn't support planar formats, but with a little bit of refactoring that is easy to fix. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
-rw-r--r--drivers/media/platform/marvell-ccic/mcam-core.c94
1 files changed, 46 insertions, 48 deletions
diff --git a/drivers/media/platform/marvell-ccic/mcam-core.c b/drivers/media/platform/marvell-ccic/mcam-core.c
index 0d9469663eec..2495ab662698 100644
--- a/drivers/media/platform/marvell-ccic/mcam-core.c
+++ b/drivers/media/platform/marvell-ccic/mcam-core.c
@@ -206,12 +206,6 @@ struct mcam_dma_desc {
u32 segment_len;
};
-struct yuv_pointer_t {
- dma_addr_t y;
- dma_addr_t u;
- dma_addr_t v;
-};
-
/*
* Our buffer type for working with videobuf2. Note that the vb2
* developers have decreed that struct vb2_buffer must be at the
@@ -223,7 +217,6 @@ struct mcam_vb_buffer {
struct mcam_dma_desc *dma_desc; /* Descriptor virtual address */
dma_addr_t dma_desc_pa; /* Descriptor physical address */
int dma_desc_nent; /* Number of mapped descriptors */
- struct yuv_pointer_t yuv_p;
};
static inline struct mcam_vb_buffer *vb_to_mvb(struct vb2_buffer *vb)
@@ -341,6 +334,47 @@ static void mcam_disable_mipi(struct mcam_camera *mcam)
mcam->mipi_enabled = false;
}
+static bool mcam_fmt_is_planar(__u32 pfmt)
+{
+ struct mcam_format_struct *f;
+
+ f = mcam_find_format(pfmt);
+ return f->planar;
+}
+
+static void mcam_write_yuv_bases(struct mcam_camera *cam,
+ unsigned frame, dma_addr_t base)
+{
+ struct v4l2_pix_format *fmt = &cam->pix_format;
+ u32 pixel_count = fmt->width * fmt->height;
+ dma_addr_t y, u = 0, v = 0;
+
+ y = base;
+
+ switch (fmt->pixelformat) {
+ case V4L2_PIX_FMT_YUV422P:
+ u = y + pixel_count;
+ v = u + pixel_count / 2;
+ break;
+ case V4L2_PIX_FMT_YUV420:
+ u = y + pixel_count;
+ v = u + pixel_count / 4;
+ break;
+ case V4L2_PIX_FMT_YVU420:
+ v = y + pixel_count;
+ u = v + pixel_count / 4;
+ break;
+ default:
+ break;
+ }
+
+ mcam_reg_write(cam, REG_Y0BAR + frame * 4, y);
+ if (mcam_fmt_is_planar(fmt->pixelformat)) {
+ mcam_reg_write(cam, REG_U0BAR + frame * 4, u);
+ mcam_reg_write(cam, REG_V0BAR + frame * 4, v);
+ }
+}
+
/* ------------------------------------------------------------------- */
#ifdef MCAM_MODE_VMALLOC
@@ -411,15 +445,14 @@ static void mcam_free_dma_bufs(struct mcam_camera *cam)
static void mcam_ctlr_dma_vmalloc(struct mcam_camera *cam)
{
/*
- * Store the first two Y buffers (we aren't supporting
- * planar formats for now, so no UV bufs). Then either
+ * Store the first two YUV buffers. Then either
* set the third if it exists, or tell the controller
* to just use two.
*/
- mcam_reg_write(cam, REG_Y0BAR, cam->dma_handles[0]);
- mcam_reg_write(cam, REG_Y1BAR, cam->dma_handles[1]);
+ mcam_write_yuv_bases(cam, 0, cam->dma_handles[0]);
+ mcam_write_yuv_bases(cam, 1, cam->dma_handles[1]);
if (cam->nbufs > 2) {
- mcam_reg_write(cam, REG_Y2BAR, cam->dma_handles[2]);
+ mcam_write_yuv_bases(cam, 2, cam->dma_handles[2]);
mcam_reg_clear_bit(cam, REG_CTRL1, C1_TWOBUFS);
} else
mcam_reg_set_bit(cam, REG_CTRL1, C1_TWOBUFS);
@@ -514,14 +547,6 @@ static inline int mcam_check_dma_buffers(struct mcam_camera *cam)
* DMA-contiguous code.
*/
-static bool mcam_fmt_is_planar(__u32 pfmt)
-{
- struct mcam_format_struct *f;
-
- f = mcam_find_format(pfmt);
- return f->planar;
-}
-
/*
* Set up a contiguous buffer for the given frame. Here also is where
* the underrun strategy is set: if there is no buffer available, reuse
@@ -533,9 +558,7 @@ static bool mcam_fmt_is_planar(__u32 pfmt)
static void mcam_set_contig_buffer(struct mcam_camera *cam, int frame)
{
struct mcam_vb_buffer *buf;
- struct v4l2_pix_format *fmt = &cam->pix_format;
dma_addr_t dma_handle;
- u32 pixel_count = fmt->width * fmt->height;
struct vb2_buffer *vb;
/*
@@ -559,32 +582,7 @@ static void mcam_set_contig_buffer(struct mcam_camera *cam, int frame)
vb = &buf->vb_buf;
dma_handle = vb2_dma_contig_plane_dma_addr(vb, 0);
- buf->yuv_p.y = dma_handle;
-
- switch (cam->pix_format.pixelformat) {
- case V4L2_PIX_FMT_YUV422P:
- buf->yuv_p.u = buf->yuv_p.y + pixel_count;
- buf->yuv_p.v = buf->yuv_p.u + pixel_count / 2;
- break;
- case V4L2_PIX_FMT_YUV420:
- buf->yuv_p.u = buf->yuv_p.y + pixel_count;
- buf->yuv_p.v = buf->yuv_p.u + pixel_count / 4;
- break;
- case V4L2_PIX_FMT_YVU420:
- buf->yuv_p.v = buf->yuv_p.y + pixel_count;
- buf->yuv_p.u = buf->yuv_p.v + pixel_count / 4;
- break;
- default:
- break;
- }
-
- mcam_reg_write(cam, frame == 0 ? REG_Y0BAR : REG_Y1BAR, buf->yuv_p.y);
- if (mcam_fmt_is_planar(fmt->pixelformat)) {
- mcam_reg_write(cam, frame == 0 ?
- REG_U0BAR : REG_U1BAR, buf->yuv_p.u);
- mcam_reg_write(cam, frame == 0 ?
- REG_V0BAR : REG_V1BAR, buf->yuv_p.v);
- }
+ mcam_write_yuv_bases(cam, frame, dma_handle);
}
/*

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