[PATCH v2 06/10] drm/i915/cmtg: set transcoder mn for cmtg

[Animesh Manna <animesh.manna@intel.com>]

Program CMTG link M/N.

Signed-off-by: Animesh Manna <animesh.manna@intel.com>
---
 drivers/gpu/drm/i915/display/intel_cmtg.c      | 12 ++++++++++++
 drivers/gpu/drm/i915/display/intel_cmtg_regs.h |  3 +++
 2 files changed, 15 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_cmtg.c b/drivers/gpu/drm/i915/display/intel_cmtg.c
index cb1376f4c13f..12a081dd7e4d 100644
--- a/drivers/gpu/drm/i915/display/intel_cmtg.c
+++ b/drivers/gpu/drm/i915/display/intel_cmtg.c
@@ -234,6 +234,16 @@ static void intel_cmtg_set_timings(const struct intel_crtc_state *crtc_state)
 	}
 }
 
+static void intel_cpu_cmtg_transcoder_set_m_n(const struct intel_crtc_state *crtc_state)
+{
+	struct intel_display *display = to_intel_display(crtc_state);
+	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+	const struct intel_link_m_n *m_n = &crtc_state->dp_m_n;
+
+	intel_de_write(display, TRANS_LINKM1_CMTG(cpu_transcoder), m_n->link_m);
+	intel_de_write(display, TRANS_LINKN1_CMTG(cpu_transcoder), m_n->link_n);
+}
+
 void intel_cmtg_enable(const struct intel_crtc_state *crtc_state)
 {
 	struct intel_display *display = to_intel_display(crtc_state);
@@ -246,4 +256,6 @@ void intel_cmtg_enable(const struct intel_crtc_state *crtc_state)
 
 	intel_de_write(display, TRANS_SET_CTX_LATENCY_CMTG(cpu_transcoder),
 		       intel_de_read(display, TRANS_SET_CONTEXT_LATENCY(display, cpu_transcoder)));
+
+	intel_cpu_cmtg_transcoder_set_m_n(crtc_state);
 }
diff --git a/drivers/gpu/drm/i915/display/intel_cmtg_regs.h b/drivers/gpu/drm/i915/display/intel_cmtg_regs.h
index 3cfd8eedb321..b766ded8686c 100644
--- a/drivers/gpu/drm/i915/display/intel_cmtg_regs.h
+++ b/drivers/gpu/drm/i915/display/intel_cmtg_regs.h
@@ -32,6 +32,9 @@
 #define TRANS_VRR_VMIN_CMTG(id)		_MMIO(0x6F434 + (id) * 0x100)
 #define TRANS_VRR_FLIPLINE_CMTG(id)	_MMIO(0x6F438 + (id) * 0x100)
 
+#define TRANS_LINKM1_CMTG(id)          _MMIO(0x6F040 + (id) * 0x100)
+#define TRANS_LINKN1_CMTG(id)          _MMIO(0x6F044 + (id) * 0x100)
+
 #define TRANS_SET_CTX_LATENCY_CMTG(id) _MMIO(0x6F07C + (id) * 0x100)
 
 #endif /* __INTEL_CMTG_REGS_H__ */
-- 
2.29.0