[Intel-gfx] [PATCH 1/4] drm/i915/dsi/xelpd: Fix the bit mask for wakeup GB

[Vandita Kulkarni]

Fixes: f87c46c43175 ("drm/i915/dsi/xelpd: Add WA to program LP to HS wakeup guardband")
Signed-off-by: Vandita Kulkarni <vandita.kulkarni at intel.com>
---
 drivers/gpu/drm/i915/display/icl_dsi.c | 2 +-
 drivers/gpu/drm/i915/i915_reg.h        | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
index 9ee62707ec72..8c166f92f8bd 100644
--- a/drivers/gpu/drm/i915/display/icl_dsi.c
+++ b/drivers/gpu/drm/i915/display/icl_dsi.c
@@ -1271,7 +1271,7 @@ static void adlp_set_lp_hs_wakeup_gb(struct intel_encoder *encoder)
 	if (DISPLAY_VER(i915) == 13) {
 		for_each_dsi_port(port, intel_dsi->ports)
 			intel_de_rmw(i915, TGL_DSI_CHKN_REG(port),
-				     TGL_DSI_CHKN_LSHS_GB, 0x4);
+				     TGL_DSI_CHKN_LSHS_GB_MASK, TGL_DSI_CHKN_LSHS_GB_MASK);
 	}
 }
 
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index a897f4abea0c..e4b1f80ca5eb 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -11728,7 +11728,8 @@ enum skl_power_gate {
 #define TGL_DSI_CHKN_REG(port)		_MMIO_PORT(port,	\
 						    _TGL_DSI_CHKN_REG_0, \
 						    _TGL_DSI_CHKN_REG_1)
-#define TGL_DSI_CHKN_LSHS_GB			REG_GENMASK(15, 12)
+#define TGL_DSI_CHKN_LSHS_GB_MASK		REG_GENMASK(15, 12)
+#define TGL_DSI_CHKN_LSHS_GB			REG_FIELD_PREP(TGL_DSI_CHKN_LSHS_GB_MASK, 4)
 
 /* Display Stream Splitter Control */
 #define DSS_CTL1				_MMIO(0x67400)
-- 
2.32.0