drm/i915/reg: add stream splitter configuration definitions

The splitter configuration is required for eDP MSO.

Bspec: 50174
Cc: Nischal Varide <nischal.varide@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/443ad1fbf908800ee4e09315cb6a7ba26c64d136.1613054234.git.jani.nikula@intel.com

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 4977bed..ca549d7 100644 (file)
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -11447,6 +11447,9 @@ enum skl_power_gate {
 #define  BIG_JOINER_ENABLE                     (1 << 29)
 #define  MASTER_BIG_JOINER_ENABLE              (1 << 28)
 #define  VGA_CENTERING_ENABLE                  (1 << 27)
+#define  SPLITTER_CONFIGURATION_MASK           REG_GENMASK(26, 25)
+#define  SPLITTER_CONFIGURATION_2_SEGMENT      REG_FIELD_PREP(SPLITTER_CONFIGURATION_MASK, 0)
+#define  SPLITTER_CONFIGURATION_4_SEGMENT      REG_FIELD_PREP(SPLITTER_CONFIGURATION_MASK, 1)
 
 #define _ICL_PIPE_DSS_CTL2_PB                  0x78204
 #define _ICL_PIPE_DSS_CTL2_PC                  0x78404