gpu: ipu-cpmem: Add ipu_cpmem_dump()

Adds ipu_cpmem_dump() which dumps a channel's cpmem to debug.

Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

diff --git a/drivers/gpu/ipu-v3/ipu-cpmem.c b/drivers/gpu/ipu-v3/ipu-cpmem.c
index c55f3620e84a4031fcb53707d0c593cf98fb8fa1..3bf05bc4ab67b03c82187666eaf0c3fee022ae60 100644 (file)
--- a/drivers/gpu/ipu-v3/ipu-cpmem.c
+++ b/drivers/gpu/ipu-v3/ipu-cpmem.c
@@ -674,6 +674,69 @@ int ipu_cpmem_set_image(struct ipuv3_channel *ch, struct ipu_image *image)
 }
 EXPORT_SYMBOL_GPL(ipu_cpmem_set_image);
 
+void ipu_cpmem_dump(struct ipuv3_channel *ch)
+{
+       struct ipu_ch_param __iomem *p = ipu_get_cpmem(ch);
+       struct ipu_soc *ipu = ch->ipu;
+       int chno = ch->num;
+
+       dev_dbg(ipu->dev, "ch %d word 0 - %08X %08X %08X %08X %08X\n", chno,
+               readl(&p->word[0].data[0]),
+               readl(&p->word[0].data[1]),
+               readl(&p->word[0].data[2]),
+               readl(&p->word[0].data[3]),
+               readl(&p->word[0].data[4]));
+       dev_dbg(ipu->dev, "ch %d word 1 - %08X %08X %08X %08X %08X\n", chno,
+               readl(&p->word[1].data[0]),
+               readl(&p->word[1].data[1]),
+               readl(&p->word[1].data[2]),
+               readl(&p->word[1].data[3]),
+               readl(&p->word[1].data[4]));
+       dev_dbg(ipu->dev, "PFS 0x%x, ",
+                ipu_ch_param_read_field(ch, IPU_FIELD_PFS));
+       dev_dbg(ipu->dev, "BPP 0x%x, ",
+               ipu_ch_param_read_field(ch, IPU_FIELD_BPP));
+       dev_dbg(ipu->dev, "NPB 0x%x\n",
+                ipu_ch_param_read_field(ch, IPU_FIELD_NPB));
+
+       dev_dbg(ipu->dev, "FW %d, ",
+                ipu_ch_param_read_field(ch, IPU_FIELD_FW));
+       dev_dbg(ipu->dev, "FH %d, ",
+                ipu_ch_param_read_field(ch, IPU_FIELD_FH));
+       dev_dbg(ipu->dev, "EBA0 0x%x\n",
+                ipu_ch_param_read_field(ch, IPU_FIELD_EBA0) << 3);
+       dev_dbg(ipu->dev, "EBA1 0x%x\n",
+                ipu_ch_param_read_field(ch, IPU_FIELD_EBA1) << 3);
+       dev_dbg(ipu->dev, "Stride %d\n",
+                ipu_ch_param_read_field(ch, IPU_FIELD_SL));
+       dev_dbg(ipu->dev, "scan_order %d\n",
+                ipu_ch_param_read_field(ch, IPU_FIELD_SO));
+       dev_dbg(ipu->dev, "uv_stride %d\n",
+                ipu_ch_param_read_field(ch, IPU_FIELD_SLUV));
+       dev_dbg(ipu->dev, "u_offset 0x%x\n",
+                ipu_ch_param_read_field(ch, IPU_FIELD_UBO) << 3);
+       dev_dbg(ipu->dev, "v_offset 0x%x\n",
+                ipu_ch_param_read_field(ch, IPU_FIELD_VBO) << 3);
+
+       dev_dbg(ipu->dev, "Width0 %d+1, ",
+                ipu_ch_param_read_field(ch, IPU_FIELD_WID0));
+       dev_dbg(ipu->dev, "Width1 %d+1, ",
+                ipu_ch_param_read_field(ch, IPU_FIELD_WID1));
+       dev_dbg(ipu->dev, "Width2 %d+1, ",
+                ipu_ch_param_read_field(ch, IPU_FIELD_WID2));
+       dev_dbg(ipu->dev, "Width3 %d+1, ",
+                ipu_ch_param_read_field(ch, IPU_FIELD_WID3));
+       dev_dbg(ipu->dev, "Offset0 %d, ",
+                ipu_ch_param_read_field(ch, IPU_FIELD_OFS0));
+       dev_dbg(ipu->dev, "Offset1 %d, ",
+                ipu_ch_param_read_field(ch, IPU_FIELD_OFS1));
+       dev_dbg(ipu->dev, "Offset2 %d, ",
+                ipu_ch_param_read_field(ch, IPU_FIELD_OFS2));
+       dev_dbg(ipu->dev, "Offset3 %d\n",
+                ipu_ch_param_read_field(ch, IPU_FIELD_OFS3));
+}
+EXPORT_SYMBOL_GPL(ipu_cpmem_dump);
+
 int ipu_cpmem_init(struct ipu_soc *ipu, struct device *dev, unsigned long base)
 {
        struct ipu_cpmem *cpmem;

diff --git a/include/video/imx-ipu-v3.h b/include/video/imx-ipu-v3.h
index b519664c101e9058b51fdb1366acc3c7545fb641..b41c17d5afc30c62f633c7ceaf73608b85785692 100644 (file)
--- a/include/video/imx-ipu-v3.h
+++ b/include/video/imx-ipu-v3.h
@@ -211,6 +211,7 @@ void ipu_cpmem_set_yuv_planar(struct ipuv3_channel *ch,
                              u32 pixel_format, int stride, int height);
 int ipu_cpmem_set_fmt(struct ipuv3_channel *ch, u32 drm_fourcc);
 int ipu_cpmem_set_image(struct ipuv3_channel *ch, struct ipu_image *image);
+void ipu_cpmem_dump(struct ipuv3_channel *ch);
 
 /*
  * IPU Display Controller (dc) functions