In DSI command mode, for sending the frame to panel
DSI controller need to issue the command unlike in
DSI video mode. This patch does the same.
Signed-off-by: Madhav Chauhan <madhav.chau...@intel.com>
---
drivers/gpu/drm/i915/icl_dsi.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c
index bd3cdde..af72b57 100644
--- a/drivers/gpu/drm/i915/icl_dsi.c
+++ b/drivers/gpu/drm/i915/icl_dsi.c
@@ -117,6 +117,23 @@ static void gen11_dsi_clear_te_interrupt(struct
intel_encoder *encoder)
}
+static void gen11_dsi_initiate_frame_req(struct intel_encoder *encoder)
+{
+ struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
+ struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
+ u32 tmp;
+ enum port port;
+ enum transcoder dsi_trans;
+
+ for_each_dsi_port(port, intel_dsi->ports) {
+ dsi_trans = dsi_port_to_transcoder(port);
+ tmp = I915_READ(DSI_CMD_FRMCTL(dsi_trans));
+ tmp |= PERIODIC_FRAME_UPDATE_ENABLE;
+ I915_WRITE(DSI_CMD_FRMCTL(dsi_trans), tmp);
+ }
+
+}
+
static void wait_for_cmds_dispatched_to_panel(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
@@ -900,6 +917,9 @@ static void gen11_dsi_enable_transcoder(struct
intel_encoder *encoder)
I965_PIPECONF_ACTIVE, 10))
DRM_ERROR("DSI transcoder not enabled\n");
}
+
+ /* For command mode, send a frame to panel */
+ gen11_dsi_initiate_frame_req(encoder);
}
static void gen11_dsi_setup_timeouts(struct intel_encoder *encoder)
--
2.7.4
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