It's needed for early mode state readout, which is in turn needed to
inherit the BIOS config. So split out the reset, which we need on
resume too, from the DPIO reg init, and do the latter earlier.
v2: split reset and reg init
Signed-off-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_display.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index b868331..f265110 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1368,6 +1368,15 @@ static void intel_init_dpio(struct drm_device *dev)
return;
DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO;
+}
+
+static void intel_dpio_reset(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (!IS_VALLEYVIEW(dev))
+ return;
+
/*
* From VLV2A0_DP_eDP_DPIO_driver_vbios_notes_10.docx -
* 6. De-assert cmn_reset/side_reset. Same as VLV X0.
@@ -10908,7 +10917,7 @@ void intel_modeset_init_hw(struct drm_device *dev)
I915_WRITE(DPLL(PIPE_B), I915_READ(DPLL(PIPE_B)) |
DPLL_INTEGRATED_CRI_CLK_VLV);
- intel_init_dpio(dev);
+ intel_dpio_reset(dev);
mutex_lock(&dev->struct_mutex);
intel_enable_gt_powersave(dev);
@@ -10971,6 +10980,8 @@ void intel_modeset_init(struct drm_device *dev)
}
}
+ intel_init_dpio(dev);
+
intel_cpu_pll_init(dev);
intel_shared_dpll_init(dev);
--
1.8.4.2
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