Triggering an error conditions in DSI video mode only results in
a very generic "some video mode error status" error message
at the moment.
Make this more clear by adding separate error messages for each bit.
Signed-off-by: Stephan Gerhold <step...@gerhold.net>
---
drivers/gpu/drm/mcde/mcde_dsi.c | 22 +++++++++++++++++++++-
drivers/gpu/drm/mcde/mcde_dsi_regs.h | 10 ++++++++++
2 files changed, 31 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/mcde/mcde_dsi.c b/drivers/gpu/drm/mcde/mcde_dsi.c
index ffd2e0b64628..c7956c92b51b 100644
--- a/drivers/gpu/drm/mcde/mcde_dsi.c
+++ b/drivers/gpu/drm/mcde/mcde_dsi.c
@@ -124,7 +124,27 @@ bool mcde_dsi_irq(struct mipi_dsi_device *mdsi)
val = readl(d->regs + DSI_VID_MODE_STS_FLAG);
if (val)
- dev_err(d->dev, "some video mode error status\n");
+ dev_dbg(d->dev, "DSI_VID_MODE_STS_FLAG = %08x\n", val);
+ if (val & DSI_VID_MODE_STS_VSG_RUNNING)
+ dev_dbg(d->dev, "VID mode VSG running\n");
+ if (val & DSI_VID_MODE_STS_ERR_MISSING_DATA)
+ dev_err(d->dev, "VID mode missing data\n");
+ if (val & DSI_VID_MODE_STS_ERR_MISSING_HSYNC)
+ dev_err(d->dev, "VID mode missing HSYNC\n");
+ if (val & DSI_VID_MODE_STS_ERR_MISSING_VSYNC)
+ dev_err(d->dev, "VID mode missing VSYNC\n");
+ if (val & DSI_VID_MODE_STS_REG_ERR_SMALL_LENGTH)
+ dev_err(d->dev, "VID mode less bytes than expected between two
HSYNC\n");
+ if (val & DSI_VID_MODE_STS_REG_ERR_SMALL_HEIGHT)
+ dev_err(d->dev, "VID mode less lines than expected between two
VSYNC\n");
+ if (val & (DSI_VID_MODE_STS_ERR_BURSTWRITE |
+ DSI_VID_MODE_STS_ERR_LINEWRITE |
+ DSI_VID_MODE_STS_ERR_LONGREAD))
+ dev_err(d->dev, "VID mode read/write error\n");
+ if (val & DSI_VID_MODE_STS_ERR_VRS_WRONG_LENGTH)
+ dev_err(d->dev, "VID mode received packets differ from expected
size\n");
+ if (val & DSI_VID_MODE_STS_VSG_RECOVERY)
+ dev_err(d->dev, "VID mode VSG in recovery mode\n");
writel(val, d->regs + DSI_VID_MODE_STS_CLR);
return te_received;
diff --git a/drivers/gpu/drm/mcde/mcde_dsi_regs.h
b/drivers/gpu/drm/mcde/mcde_dsi_regs.h
index c9253321a3be..b03a336c235f 100644
--- a/drivers/gpu/drm/mcde/mcde_dsi_regs.h
+++ b/drivers/gpu/drm/mcde/mcde_dsi_regs.h
@@ -248,6 +248,16 @@
#define DSI_VID_MODE_STS 0x000000BC
#define DSI_VID_MODE_STS_VSG_RUNNING BIT(0)
+#define DSI_VID_MODE_STS_ERR_MISSING_DATA BIT(1)
+#define DSI_VID_MODE_STS_ERR_MISSING_HSYNC BIT(2)
+#define DSI_VID_MODE_STS_ERR_MISSING_VSYNC BIT(3)
+#define DSI_VID_MODE_STS_REG_ERR_SMALL_LENGTH BIT(4)
+#define DSI_VID_MODE_STS_REG_ERR_SMALL_HEIGHT BIT(5)
+#define DSI_VID_MODE_STS_ERR_BURSTWRITE BIT(6)
+#define DSI_VID_MODE_STS_ERR_LINEWRITE BIT(7)
+#define DSI_VID_MODE_STS_ERR_LONGREAD BIT(8)
+#define DSI_VID_MODE_STS_ERR_VRS_WRONG_LENGTH BIT(9)
+#define DSI_VID_MODE_STS_VSG_RECOVERY BIT(10)
#define DSI_VID_VCA_SETTING1 0x000000C0
#define DSI_VID_VCA_SETTING1_MAX_BURST_LIMIT_SHIFT 0
--
2.23.0
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
