From 9c83ab1bb384ebf72260b995c4c416bd86fd0e26 Mon Sep 17 00:00:00 2001 From: Madhav Chauhan Date: Tue, 30 Oct 2018 13:56:18 +0200 Subject: [PATCH] drm/i915/icl: Disable portsync mode This patch disables portsync mode if DSI link is operating in dual link mode by writing to TRANS_DDI_FUNC_CTL2 registers. Signed-off-by: Madhav Chauhan Reviewed-by: Jani Nikula Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/3e608420b58930b6da478801bff018c6e964eb94.1540900289.git.jani.nikula@intel.com --- drivers/gpu/drm/i915/icl_dsi.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c index 0041f57d3c0b..71092f116170 100644 --- a/drivers/gpu/drm/i915/icl_dsi.c +++ b/drivers/gpu/drm/i915/icl_dsi.c @@ -841,6 +841,16 @@ static void gen11_dsi_deconfigure_trancoder(struct intel_encoder *encoder) tmp &= ~TRANS_DDI_FUNC_ENABLE; I915_WRITE(TRANS_DDI_FUNC_CTL(dsi_trans), tmp); } + + /* disable port sync mode if dual link */ + if (intel_dsi->dual_link) { + for_each_dsi_port(port, intel_dsi->ports) { + dsi_trans = dsi_port_to_transcoder(port); + tmp = I915_READ(TRANS_DDI_FUNC_CTL2(dsi_trans)); + tmp &= ~PORT_SYNC_MODE_ENABLE; + I915_WRITE(TRANS_DDI_FUNC_CTL2(dsi_trans), tmp); + } + } } static void __attribute__((unused)) gen11_dsi_disable( -- 2.30.2