[PATCH v2 05/10] drm/i915/cmtg: program set context latency of cmtg

[Animesh Manna]

Program context latency for delayed vblank timings to create window2.

Signed-off-by: Animesh Manna <animesh.ma...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_cmtg.c      | 4 ++++
 drivers/gpu/drm/i915/display/intel_cmtg_regs.h | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_cmtg.c 
b/drivers/gpu/drm/i915/display/intel_cmtg.c
index 26adf70cdd00..cb1376f4c13f 100644
--- a/drivers/gpu/drm/i915/display/intel_cmtg.c
+++ b/drivers/gpu/drm/i915/display/intel_cmtg.c
@@ -236,10 +236,14 @@ static void intel_cmtg_set_timings(const struct 
intel_crtc_state *crtc_state)
 
 void intel_cmtg_enable(const struct intel_crtc_state *crtc_state)
 {
+       struct intel_display *display = to_intel_display(crtc_state);
        enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
 
        if (cpu_transcoder != TRANSCODER_A && cpu_transcoder != TRANSCODER_B)
                return;
 
        intel_cmtg_set_timings(crtc_state);
+
+       intel_de_write(display, TRANS_SET_CTX_LATENCY_CMTG(cpu_transcoder),
+                      intel_de_read(display, 
TRANS_SET_CONTEXT_LATENCY(display, cpu_transcoder)));
 }
diff --git a/drivers/gpu/drm/i915/display/intel_cmtg_regs.h 
b/drivers/gpu/drm/i915/display/intel_cmtg_regs.h
index eab90415d0da..3cfd8eedb321 100644
--- a/drivers/gpu/drm/i915/display/intel_cmtg_regs.h
+++ b/drivers/gpu/drm/i915/display/intel_cmtg_regs.h
@@ -32,4 +32,6 @@
 #define TRANS_VRR_VMIN_CMTG(id)                _MMIO(0x6F434 + (id) * 0x100)
 #define TRANS_VRR_FLIPLINE_CMTG(id)    _MMIO(0x6F438 + (id) * 0x100)
 
+#define TRANS_SET_CTX_LATENCY_CMTG(id) _MMIO(0x6F07C + (id) * 0x100)
+
 #endif /* __INTEL_CMTG_REGS_H__ */
-- 
2.29.0