[Intel-gfx] [PATCH] drm/i915/dsi: disable lpdt if it is not enabled

[William Tseng]

Avoid setting LP_DATA_TRANSFER when enable_lpdt is false

Cc: Ville Syrjala <ville.syrjala at linux.intel.com>
Cc: Jani Nikula <jani.nikula at linux.intel.com>
Cc: Vandita Kulkarni <vandita.kulkarni at intel.com>
Cc: Lee Shawn C <shawn.c.lee at intel.com>
Cc: Cooper Chiou <cooper.chiou at intel.com>
Signed-off-by: William Tseng <william.tseng at intel.com>
---
 drivers/gpu/drm/i915/display/icl_dsi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
index 168c84a74d30..31cea17481b1 100644
--- a/drivers/gpu/drm/i915/display/icl_dsi.c
+++ b/drivers/gpu/drm/i915/display/icl_dsi.c
@@ -183,6 +183,8 @@ static int dsi_send_pkt_hdr(struct intel_dsi_host *host,
 
 	if (enable_lpdt)
 		tmp |= LP_DATA_TRANSFER;
+	else
+		tmp &= ~LP_DATA_TRANSFER;
 
 	tmp &= ~(PARAM_WC_MASK | VC_MASK | DT_MASK);
 	tmp |= ((packet->header[0] & VC_MASK) << VC_SHIFT);
-- 
2.17.1