On TGL+ the DSS control registers are at different offsets, and there's one per pipe. Fix the offsets to fix dual link DSI for TGL+. There would be helpers for this in the DSC code, but just do the quick fix now for DSI. Long term, we should probably move all the DSS handling into intel_vdsc.c, so exporting the helpers seems counter-productive. Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8232 Cc: Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx> --- drivers/gpu/drm/i915/display/icl_dsi.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c index b5316715bb3b..5a17ab3f0d1a 100644 --- a/drivers/gpu/drm/i915/display/icl_dsi.c +++ b/drivers/gpu/drm/i915/display/icl_dsi.c @@ -277,9 +277,21 @@ static void configure_dual_link_mode(struct intel_encoder *encoder, { struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); + i915_reg_t dss_ctl1_reg, dss_ctl2_reg; u32 dss_ctl1; - dss_ctl1 = intel_de_read(dev_priv, DSS_CTL1); + /* FIXME: Move all DSS handling to intel_vdsc.c */ + if (DISPLAY_VER(dev_priv) >= 12) { + struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc); + + dss_ctl1_reg = ICL_PIPE_DSS_CTL1(crtc->pipe); + dss_ctl2_reg = ICL_PIPE_DSS_CTL2(crtc->pipe); + } else { + dss_ctl1_reg = DSS_CTL1; + dss_ctl2_reg = DSS_CTL2; + } + + dss_ctl1 = intel_de_read(dev_priv, dss_ctl1_reg); dss_ctl1 |= SPLITTER_ENABLE; dss_ctl1 &= ~OVERLAP_PIXELS_MASK; dss_ctl1 |= OVERLAP_PIXELS(intel_dsi->pixel_overlap); @@ -299,14 +311,14 @@ static void configure_dual_link_mode(struct intel_encoder *encoder, dss_ctl1 &= ~LEFT_DL_BUF_TARGET_DEPTH_MASK; dss_ctl1 |= LEFT_DL_BUF_TARGET_DEPTH(dl_buffer_depth); - intel_de_rmw(dev_priv, DSS_CTL2, RIGHT_DL_BUF_TARGET_DEPTH_MASK, + intel_de_rmw(dev_priv, dss_ctl2_reg, RIGHT_DL_BUF_TARGET_DEPTH_MASK, RIGHT_DL_BUF_TARGET_DEPTH(dl_buffer_depth)); } else { /* Interleave */ dss_ctl1 |= DUAL_LINK_MODE_INTERLEAVE; } - intel_de_write(dev_priv, DSS_CTL1, dss_ctl1); + intel_de_write(dev_priv, dss_ctl1_reg, dss_ctl1); } /* aka DSI 8X clock */ -- 2.39.1
