ADL-P supports stream splitter on pipe B in addition to pipe A. Update
the sanity check in intel_ddi_mso_get_config() to reflect this, and
remove the check in intel_ddi_mso_configure() as redundant with
encoder->pipe_mask. Abstract the splitter pipe mask to a single point of
truth while at it to avoid similar mistakes in the future.
Fixes: 7bc188cc2c8c ("drm/i915/adl_p: enable MSO on pipe B")
Cc: Uma Shankar <uma.shan...@intel.com>
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Cc: Swati Sharma <swati2.sha...@intel.com>
Signed-off-by: Jani Nikula <jani.nik...@intel.com>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
b/drivers/gpu/drm/i915/display/intel_ddi.c
index e932fd0fe7e2..eb9aa871f87b 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -2251,6 +2251,15 @@ static void intel_ddi_power_up_lanes(struct
intel_encoder *encoder,
}
}
+/* Splitter enable for eDP MSO is limited to certain pipes. */
+static u8 intel_ddi_splitter_pipe_mask(struct drm_i915_private *i915)
+{
+ if (IS_ALDERLAKE_P(i915))
+ return BIT(PIPE_A) | BIT(PIPE_B);
+ else
+ return BIT(PIPE_A);
+}
+
static void intel_ddi_mso_get_config(struct intel_encoder *encoder,
struct intel_crtc_state *pipe_config)
{
@@ -2268,8 +2277,7 @@ static void intel_ddi_mso_get_config(struct intel_encoder
*encoder,
if (!pipe_config->splitter.enable)
return;
- /* Splitter enable is supported for pipe A only. */
- if (drm_WARN_ON(&i915->drm, pipe != PIPE_A)) {
+ if (drm_WARN_ON(&i915->drm, !(intel_ddi_splitter_pipe_mask(i915) &
BIT(pipe)))) {
pipe_config->splitter.enable = false;
return;
}
@@ -2301,10 +2309,6 @@ static void intel_ddi_mso_configure(const struct
intel_crtc_state *crtc_state)
return;
if (crtc_state->splitter.enable) {
- /* Splitter enable is supported for pipe A only. */
- if (drm_WARN_ON(&i915->drm, pipe != PIPE_A))
- return;
-
dss1 |= SPLITTER_ENABLE;
dss1 |= OVERLAP_PIXELS(crtc_state->splitter.pixel_overlap);
if (crtc_state->splitter.link_count == 2)
@@ -4666,12 +4670,8 @@ void intel_ddi_init(struct drm_i915_private *dev_priv,
enum port port)
dig_port->hpd_pulse = intel_dp_hpd_pulse;
- /* Splitter enable for eDP MSO is limited to certain pipes. */
- if (dig_port->dp.mso_link_count) {
- encoder->pipe_mask = BIT(PIPE_A);
- if (IS_ALDERLAKE_P(dev_priv))
- encoder->pipe_mask |= BIT(PIPE_B);
- }
+ if (dig_port->dp.mso_link_count)
+ encoder->pipe_mask =
intel_ddi_splitter_pipe_mask(dev_priv);
}
/* In theory we don't need the encoder->type check, but leave it just in
--
2.20.1
