From 5382f5f35e73e5c7ac486824d1e26a2f44de0eec Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Mon, 16 Dec 2013 16:34:24 -0800 Subject: [PATCH] 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 Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 9405340369d1..066fc9ddbd28 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -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); -- 2.20.1