According to spec we should send SHUTDOWN before MIPI_SEQ_DISPLAY_OFF for v3+ VBT's. Testing with VBT v3 the current implementation yields the following error message
*ERROR* Video mode command 0x00000041 send failed. To get rid of this error message, let's limit SHUTDOWN only for VBT versions 3 or higher. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102404 Signed-off-by: Mika Kahola <mika.kah...@intel.com> --- drivers/gpu/drm/i915/intel_dsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c index 2a0f5d3..b48b9b7 100644 --- a/drivers/gpu/drm/i915/intel_dsi.c +++ b/drivers/gpu/drm/i915/intel_dsi.c @@ -916,7 +916,7 @@ static void intel_dsi_disable(struct intel_encoder *encoder, * MIPI_SEQ_DISPLAY_OFF only for v3+ VBTs, but field testing * has shown that the v3 sequence works for v2 VBTs too */ - if (is_vid_mode(intel_dsi)) { + if (is_vid_mode(intel_dsi) && dev_priv->vbt.dsi.seq_version > 3) { /* Send Shutdown command to the panel in LP mode */ for_each_dsi_port(port, intel_dsi->ports) dpi_send_cmd(intel_dsi, SHUTDOWN, false, port); -- 2.7.4 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
