Add MSO configuration to crtc state, and read it where supported.
v2: Add warning for mso being enabled on pipes other than A.
Cc: Nischal Varide <nischal.varide@xxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 37 +++++++++++++++++++
.../drm/i915/display/intel_display_types.h | 7 ++++
drivers/gpu/drm/i915/i915_drv.h | 2 +
3 files changed, 46 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index d4c09a1aa06e..4c441139bdb0 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3598,6 +3598,41 @@ static void intel_ddi_disable_fec_state(struct intel_encoder *encoder,
intel_de_posting_read(dev_priv, dp_tp_ctl_reg(encoder, crtc_state));
}
+static void intel_ddi_mso_get_config(struct intel_encoder *encoder,
+ struct intel_crtc_state *pipe_config)
+{
+ struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
+ struct drm_i915_private *i915 = to_i915(crtc->base.dev);
+ enum pipe pipe = crtc->pipe;
+ u32 dss1;
+
+ if (!HAS_MSO(i915))
+ return;
+
+ dss1 = intel_de_read(i915, ICL_PIPE_DSS_CTL1(pipe));
+
+ pipe_config->mso.enable = dss1 & SPLITTER_ENABLE;
+ if (!pipe_config->mso.enable)
+ return;
+
+ /* Splitter enable is supported for pipe A only. */
+ if (drm_WARN_ON(&i915->drm, pipe != PIPE_A)) {
+ pipe_config->mso.enable = false;
+ return;
+ }
+
+ switch (dss1 & SPLITTER_CONFIGURATION_MASK) {
+ case SPLITTER_CONFIGURATION_2_SEGMENT:
+ pipe_config->mso.link_count = 2;
+ break;
+ case SPLITTER_CONFIGURATION_4_SEGMENT:
+ pipe_config->mso.link_count = 4;
+ break;
+ }
+
+ pipe_config->mso.pixel_overlap = REG_FIELD_GET(OVERLAP_PIXELS_MASK, dss1);
+}
+
static void tgl_ddi_pre_enable_dp(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
@@ -4672,6 +4707,8 @@ static void intel_ddi_read_func_ctl(struct intel_encoder *encoder,
struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
u32 temp, flags = 0;
+ intel_ddi_mso_get_config(encoder, pipe_config);
+
temp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder));
if (temp & TRANS_DDI_PHSYNC)
flags |= DRM_MODE_FLAG_PHSYNC;
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 59fe86fe4e4d..9e73d6a2d43f 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1151,6 +1151,13 @@ struct intel_crtc_state {
struct intel_dsb *dsb;
u32 psr2_man_track_ctl;
+
+ /* eDP MSO */
+ struct {
+ bool enable;
+ u8 link_count;
+ u8 pixel_overlap;
+ } mso;
};
enum intel_pipe_crc_source {
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 99cf861df92d..fa351bee5072 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1755,6 +1755,8 @@ tgl_stepping_get(struct drm_i915_private *dev_priv)
#define HAS_CSR(dev_priv) (INTEL_INFO(dev_priv)->display.has_csr)
+#define HAS_MSO(i915) (INTEL_GEN(i915) >= 12)
+
#define HAS_RUNTIME_PM(dev_priv) (INTEL_INFO(dev_priv)->has_runtime_pm)
#define HAS_64BIT_RELOC(dev_priv) (INTEL_INFO(dev_priv)->has_64bit_reloc)
--
2.20.1
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