Instead of pipe configuration reg, cck reg to be used for checking whether
DSI Pll is getting locked or not.
v2: dpio_lock unlocked now in case DSI PLL lock fails
Signed-off-by: Gaurav K Singh <gaurav.k.singh@xxxxxxxxx>
Signed-off-by: Shobhit Kumar <shobhit.kumar@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_dsi_pll.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dsi_pll.c b/drivers/gpu/drm/i915/intel_dsi_pll.c
index 636d72f..8957f10 100644
--- a/drivers/gpu/drm/i915/intel_dsi_pll.c
+++ b/drivers/gpu/drm/i915/intel_dsi_pll.c
@@ -272,12 +272,14 @@ void vlv_enable_dsi_pll(struct intel_encoder *encoder)
tmp |= DSI_PLL_VCO_EN;
vlv_cck_write(dev_priv, CCK_REG_DSI_PLL_CONTROL, tmp);
- mutex_unlock(&dev_priv->dpio_lock);
+ if (wait_for(vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL) &
+ DSI_PLL_LOCK, 20)) {
- if (wait_for(I915_READ(PIPECONF(PIPE_A)) & PIPECONF_DSI_PLL_LOCKED, 20)) {
+ mutex_unlock(&dev_priv->dpio_lock);
DRM_ERROR("DSI PLL lock failed\n");
return;
}
+ mutex_unlock(&dev_priv->dpio_lock);
DRM_DEBUG_KMS("DSI PLL locked\n");
}
--
1.7.9.5
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