diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dsi_cmd.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dsi_cmd.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_dsi_cmd.c b/drivers/gpu/drm/i915/intel_dsi_cmd.c index 933c86305237..7f1430ac8543 100644 --- a/drivers/gpu/drm/i915/intel_dsi_cmd.c +++ b/drivers/gpu/drm/i915/intel_dsi_cmd.c @@ -419,3 +419,19 @@ int dpi_send_cmd(struct intel_dsi *intel_dsi, u32 cmd, bool hs) return 0; } + +void wait_for_dsi_fifo_empty(struct intel_dsi *intel_dsi) +{ + struct drm_encoder *encoder = &intel_dsi->base.base; + struct drm_device *dev = encoder->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); + enum pipe pipe = intel_crtc->pipe; + u32 mask; + + mask = LP_CTRL_FIFO_EMPTY | HS_CTRL_FIFO_EMPTY | + LP_DATA_FIFO_EMPTY | HS_DATA_FIFO_EMPTY; + + if (wait_for((I915_READ(MIPI_GEN_FIFO_STAT(pipe)) & mask) == mask, 100)) + DRM_ERROR("DPI FIFOs are not empty\n"); +} |