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drm/i915/vlv: split DPIO init and reset 

We only need to init the reg offset for DPIO once, but we need to reset
DPIO at resume time and at init time.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Jesse Barnes 2013-12-16 16:34:24 -08:00 committed by Daniel Vetter
parent f42bb70d4f
commit 5382f5f35e
1 changed files with 11 additions and 1 deletions
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12
drivers/gpu/drm/i915/intel_display.c
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@ -1372,6 +1372,15 @@ static void intel_init_dpio(struct drm_device *dev)
DPLL_INTEGRATED_CRI_CLK_VLV);
DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO;
}
static void intel_reset_dpio(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.
@ -10809,7 +10818,7 @@ void intel_modeset_init_hw(struct drm_device *dev)
intel_init_clock_gating(dev);
intel_init_dpio(dev);
intel_reset_dpio(dev);
mutex_lock(&dev->struct_mutex);
intel_enable_gt_powersave(dev);
@ -10872,6 +10881,7 @@ void intel_modeset_init(struct drm_device *dev)
}
intel_init_dpio(dev);
intel_reset_dpio(dev);
intel_cpu_pll_init(dev);
intel_shared_dpll_init(dev);