cal_read(ctx->cal, CAL_PIX_PROC(ctx->index)));
}
-void cal_ctx_wr_dma_config(struct cal_ctx *ctx, unsigned int width,
- unsigned int height)
+void cal_ctx_wr_dma_config(struct cal_ctx *ctx)
{
+ unsigned int stride = ctx->v_fmt.fmt.pix.bytesperline;
u32 val;
val = cal_read(ctx->cal, CAL_WR_DMA_CTRL(ctx->index));
cal_set_field(&val, ctx->cport, CAL_WR_DMA_CTRL_CPORT_MASK);
- cal_set_field(&val, height, CAL_WR_DMA_CTRL_YSIZE_MASK);
+ cal_set_field(&val, ctx->v_fmt.fmt.pix.height,
+ CAL_WR_DMA_CTRL_YSIZE_MASK);
cal_set_field(&val, CAL_WR_DMA_CTRL_DTAG_PIX_DAT,
CAL_WR_DMA_CTRL_DTAG_MASK);
cal_set_field(&val, CAL_WR_DMA_CTRL_MODE_CONST,
ctx_dbg(3, ctx, "CAL_WR_DMA_CTRL(%d) = 0x%08x\n", ctx->index,
cal_read(ctx->cal, CAL_WR_DMA_CTRL(ctx->index)));
- /*
- * width/16 not sure but giving it a whirl.
- * zero does not work right
- */
- cal_write_field(ctx->cal,
- CAL_WR_DMA_OFST(ctx->index),
- (width / 16),
- CAL_WR_DMA_OFST_MASK);
+ cal_write_field(ctx->cal, CAL_WR_DMA_OFST(ctx->index),
+ stride / 16, CAL_WR_DMA_OFST_MASK);
ctx_dbg(3, ctx, "CAL_WR_DMA_OFST(%d) = 0x%08x\n", ctx->index,
cal_read(ctx->cal, CAL_WR_DMA_OFST(ctx->index)));
/* 64 bit word means no skipping */
cal_set_field(&val, 0, CAL_WR_DMA_XSIZE_XSKIP_MASK);
/*
- * (width*8)/64 this should be size of an entire line
- * in 64bit word but 0 means all data until the end
- * is detected automagically
+ * The XSIZE field is expressed in 64-bit units and prevents overflows
+ * in case of synchronization issues by limiting the number of bytes
+ * written per line.
*/
- cal_set_field(&val, (width / 8), CAL_WR_DMA_XSIZE_MASK);
+ cal_set_field(&val, stride / 8, CAL_WR_DMA_XSIZE_MASK);
cal_write(ctx->cal, CAL_WR_DMA_XSIZE(ctx->index), val);
ctx_dbg(3, ctx, "CAL_WR_DMA_XSIZE(%d) = 0x%08x\n", ctx->index,
cal_read(ctx->cal, CAL_WR_DMA_XSIZE(ctx->index)));