From: Gaurav K Singh <gaurav.k.singh@xxxxxxxxx> After sending SHUTDOWN or TURN ON packet,check the DPI FIFO empty status. Signed-off-by: Gaurav K Singh <gaurav.k.singh@xxxxxxxxx> --- drivers/gpu/drm/i915/intel_dsi.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c index 170ae6f..5c5b59a 100644 --- a/drivers/gpu/drm/i915/intel_dsi.c +++ b/drivers/gpu/drm/i915/intel_dsi.c @@ -222,6 +222,12 @@ static int dpi_send_cmd(struct intel_dsi *intel_dsi, u32 cmd, bool hs, else cmd |= DPI_LP_MODE; + mask = DPI_FIFO_EMPTY; + + if (wait_for((I915_READ(MIPI_GEN_FIFO_STAT(port)) & mask) + == mask, 50)) + DRM_ERROR("Timeout waiting for DPI FIFO empty\n"); + /* clear bit */ I915_WRITE(MIPI_INTR_STAT(port), SPL_PKT_SENT_INTERRUPT); -- 1.9.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx