Implement the hardware state readout code.
Thanks to Animesh Manna for spotting this problem.
Cc: Animesh Manna <animesh.manna@xxxxxxxxx>
Credits-to: Animesh Manna <animesh.manna@xxxxxxxxx>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_display.c | 42 +++++++++++++++++++++++++++++++++++-
1 file changed, 41 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 64593b0fbebd..d5a19c1b3b20 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9146,6 +9146,44 @@ static void cannonlake_get_ddi_pll(struct drm_i915_private *dev_priv,
pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
}
+static void icelake_get_ddi_pll(struct drm_i915_private *dev_priv,
+ enum port port,
+ struct intel_crtc_state *pipe_config)
+{
+ enum intel_dpll_id id;
+ u32 temp;
+
+ /* TODO: TBT pll not implemented. */
+ switch (port) {
+ case PORT_A:
+ case PORT_B:
+ temp = I915_READ(DPCLKA_CFGCR0_ICL) &
+ DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port);
+ id = temp >> DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(port);
+
+ if (WARN_ON(id != DPLL_ID_ICL_DPLL0 && id != DPLL_ID_ICL_DPLL1))
+ return;
+ break;
+ case PORT_C:
+ id = DPLL_ID_ICL_MGPLL1;
+ break;
+ case PORT_D:
+ id = DPLL_ID_ICL_MGPLL2;
+ break;
+ case PORT_E:
+ id = DPLL_ID_ICL_MGPLL3;
+ break;
+ case PORT_F:
+ id = DPLL_ID_ICL_MGPLL4;
+ break;
+ default:
+ MISSING_CASE(port);
+ return;
+ }
+
+ pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
+}
+
static void bxt_get_ddi_pll(struct drm_i915_private *dev_priv,
enum port port,
struct intel_crtc_state *pipe_config)
@@ -9333,7 +9371,9 @@ static void haswell_get_ddi_port_state(struct intel_crtc *crtc,
port = (tmp & TRANS_DDI_PORT_MASK) >> TRANS_DDI_PORT_SHIFT;
- if (IS_CANNONLAKE(dev_priv))
+ if (IS_ICELAKE(dev_priv))
+ icelake_get_ddi_pll(dev_priv, port, pipe_config);
+ else if (IS_CANNONLAKE(dev_priv))
cannonlake_get_ddi_pll(dev_priv, port, pipe_config);
else if (IS_GEN9_BC(dev_priv))
skylake_get_ddi_pll(dev_priv, port, pipe_config);
--
2.14.3
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