As per the Bspec, port mapping is fixed for mipi dsi.
v2: Reuse the existing function (Jani)
Signed-off-by: Vandita Kulkarni <vandita.kulkarni@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_display.c | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 23f00a651738..dccb94b24d14 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -10577,16 +10577,21 @@ static void haswell_get_ddi_port_state(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+ enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
struct intel_shared_dpll *pll;
enum port port;
u32 tmp;
- tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder));
-
- if (INTEL_GEN(dev_priv) >= 12)
- port = TGL_TRANS_DDI_FUNC_CTL_VAL_TO_PORT(tmp);
- else
- port = TRANS_DDI_FUNC_CTL_VAL_TO_PORT(tmp);
+ if (transcoder_is_dsi(cpu_transcoder)) {
+ port = (cpu_transcoder == TRANSCODER_DSI_A) ?
+ PORT_A : PORT_B;
+ } else {
+ tmp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
+ if (INTEL_GEN(dev_priv) >= 12)
+ port = TGL_TRANS_DDI_FUNC_CTL_VAL_TO_PORT(tmp);
+ else
+ port = TRANS_DDI_FUNC_CTL_VAL_TO_PORT(tmp);
+ }
if (INTEL_GEN(dev_priv) >= 11)
icelake_get_ddi_pll(dev_priv, port, pipe_config);
--
2.21.0.5.gaeb582a
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