According to the spec we should call MIPI_SEQ_TEAR_ON and DISPLAY_ON
on enable for cmd-mode, just like we already call their counterparts
on disable. Note: untested, my panel is a vid-mode panel.

Signed-off-by: Hans de Goede <hdego...@redhat.com>
---
 drivers/gpu/drm/i915/intel_dsi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index e3ecb5a..bf956a3 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -667,6 +667,8 @@ static void intel_dsi_pre_enable(struct intel_encoder 
*encoder,
        if (is_cmd_mode(intel_dsi)) {
                for_each_dsi_port(port, intel_dsi->ports)
                        I915_WRITE(MIPI_MAX_RETURN_PKT_SIZE(port), 8 * 4);
+               intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_TEAR_ON);
+               intel_dsi_exec_vbt_sequence(intel_dsi, MIPI_SEQ_DISPLAY_ON);
        } else {
                msleep(20); /* XXX */
                for_each_dsi_port(port, intel_dsi->ports)
-- 
2.9.3

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