Re: [PATCH] drm/i915/edp: fix eDP MSO pipe sanity checks for ADL-P

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Please check CI results once; if regressions are unrelated please report.
With those fixed.

Reviewed-by:
Swati Sharma <swati2.sharma@xxxxxxxxx>
Tested-by:
Swati Sharma <swati2.sharma@xxxxxxxxx>

On 12-Aug-21 6:53 PM, Jani Nikula wrote:
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.shankar@xxxxxxxxx>
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: Swati Sharma <swati2.sharma@xxxxxxxxx>
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
  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


--
~Swati Sharma



[Index of Archives]     [AMD Graphics]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux