From: Archit Taneja <archit@xxxxxx>
For n input fields, the VPE de-interlacer creates n - 2 progressive frames.
To support this, we use line average mode of de-interlacer for the first 2
input fields to generate 2 progressive frames. We then revert back to the
preferred EDI method, and create n - 2 frames, creating a sum of n frames.
Signed-off-by: Archit Taneja <archit@xxxxxx>
Signed-off-by: Nikhil Devshatwar <nikhil.nd@xxxxxx>
---
drivers/media/platform/ti-vpe/vpe.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/drivers/media/platform/ti-vpe/vpe.c b/drivers/media/platform/ti-vpe/vpe.c
index 4c3ef48..a11044f 100644
--- a/drivers/media/platform/ti-vpe/vpe.c
+++ b/drivers/media/platform/ti-vpe/vpe.c
@@ -807,6 +807,23 @@ static void set_dei_shadow_registers(struct vpe_ctx *ctx)
ctx->load_mmrs = true;
}
+static void config_edi_input_mode(struct vpe_ctx *ctx, int mode)
+{
+ struct vpe_mmr_adb *mmr_adb = ctx->mmr_adb.addr;
+ u32 *edi_config_reg = &mmr_adb->dei_regs[3];
+
+ if (mode & 0x2)
+ write_field(edi_config_reg, 1, 1, 2); /* EDI_ENABLE_3D */
+
+ if (mode & 0x3)
+ write_field(edi_config_reg, 1, 1, 3); /* EDI_CHROMA_3D */
+
+ write_field(edi_config_reg, mode, VPE_EDI_INP_MODE_MASK,
+ VPE_EDI_INP_MODE_SHIFT);
+
+ ctx->load_mmrs = true;
+}
+
/*
* Set the shadow registers whose values are modified when either the
* source or destination format is changed.
@@ -1119,6 +1136,15 @@ static void device_run(void *priv)
ctx->dst_vb = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
WARN_ON(ctx->dst_vb == NULL);
+ if (ctx->deinterlacing) {
+ /*
+ * we have output the first 2 frames through line average, we
+ * now switch to EDI de-interlacer
+ */
+ if (ctx->sequence == 2)
+ config_edi_input_mode(ctx, 0x3); /* EDI (Y + UV) */
+ }
+
/* config descriptors */
if (ctx->dev->loaded_mmrs != ctx->mmr_adb.dma_addr || ctx->load_mmrs) {
vpdma_map_desc_buf(ctx->dev->vpdma, &ctx->mmr_adb);
@@ -1780,6 +1806,9 @@ static int vpe_streamon(struct file *file, void *priv, enum v4l2_buf_type type)
{
struct vpe_ctx *ctx = file2ctx(file);
+ if (ctx->deinterlacing)
+ config_edi_input_mode(ctx, 0x0);
+
return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
}
--
1.7.9.5
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