drm/i915: Wrappers for display register waits

To reduce the number of explicit dev_priv->uncore calls in the display
code ahead of the introduction of dev_priv->de_uncore, this patch
introduces a wrapper for one of the main usages of it, the register
waits. When we transition to the new uncore, we can just update the
wrapper to point to the appropriate structure.

Since the vast majority of waits are on a set or clear of a bit or mask,
add set & clear flavours of the wrapper to simplify the code.

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190816012343.36433-7-daniele.ceraolospurio@intel.com

1 files changed, 11 insertions, 33 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index 84a09d96d52f..b8148f838354 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -1000,11 +1000,7 @@ static void skl_ddi_pll_enable(struct drm_i915_private *dev_priv,
 	I915_WRITE(regs[id].ctl,
 		   I915_READ(regs[id].ctl) | LCPLL_PLL_ENABLE);
 
-	if (intel_wait_for_register(&dev_priv->uncore,
-				    DPLL_STATUS,
-				    DPLL_LOCK(id),
-				    DPLL_LOCK(id),
-				    5))
+	if (intel_de_wait_for_set(dev_priv, DPLL_STATUS, DPLL_LOCK(id), 5))
 		DRM_ERROR("DPLL %d not locked\n", id);
 }
 
@@ -2016,11 +2012,8 @@ static void cnl_ddi_pll_enable(struct drm_i915_private *dev_priv,
 	I915_WRITE(CNL_DPLL_ENABLE(id), val);
 
 	/* 2. Wait for DPLL power state enabled in DPLL_ENABLE. */
-	if (intel_wait_for_register(&dev_priv->uncore,
-				    CNL_DPLL_ENABLE(id),
-				    PLL_POWER_STATE,
-				    PLL_POWER_STATE,
-				    5))
+	if (intel_de_wait_for_set(dev_priv, CNL_DPLL_ENABLE(id),
+				  PLL_POWER_STATE, 5))
 		DRM_ERROR("PLL %d Power not enabled\n", id);
 
 	/*
@@ -2057,11 +2050,7 @@ static void cnl_ddi_pll_enable(struct drm_i915_private *dev_priv,
 	I915_WRITE(CNL_DPLL_ENABLE(id), val);
 
 	/* 7. Wait for PLL lock status in DPLL_ENABLE. */
-	if (intel_wait_for_register(&dev_priv->uncore,
-				    CNL_DPLL_ENABLE(id),
-				    PLL_LOCK,
-				    PLL_LOCK,
-				    5))
+	if (intel_de_wait_for_set(dev_priv, CNL_DPLL_ENABLE(id), PLL_LOCK, 5))
 		DRM_ERROR("PLL %d not locked\n", id);
 
 	/*
@@ -2105,11 +2094,7 @@ static void cnl_ddi_pll_disable(struct drm_i915_private *dev_priv,
 	I915_WRITE(CNL_DPLL_ENABLE(id), val);
 
 	/* 4. Wait for PLL not locked status in DPLL_ENABLE. */
-	if (intel_wait_for_register(&dev_priv->uncore,
-				    CNL_DPLL_ENABLE(id),
-				    PLL_LOCK,
-				    0,
-				    5))
+	if (intel_de_wait_for_clear(dev_priv, CNL_DPLL_ENABLE(id), PLL_LOCK, 5))
 		DRM_ERROR("PLL %d locked\n", id);
 
 	/*
@@ -2127,11 +2112,8 @@ static void cnl_ddi_pll_disable(struct drm_i915_private *dev_priv,
 	I915_WRITE(CNL_DPLL_ENABLE(id), val);
 
 	/* 7. Wait for DPLL power state disabled in DPLL_ENABLE. */
-	if (intel_wait_for_register(&dev_priv->uncore,
-				    CNL_DPLL_ENABLE(id),
-				    PLL_POWER_STATE,
-				    0,
-				    5))
+	if (intel_de_wait_for_clear(dev_priv, CNL_DPLL_ENABLE(id),
+				    PLL_POWER_STATE, 5))
 		DRM_ERROR("PLL %d Power not disabled\n", id);
 }
 
@@ -3252,8 +3234,7 @@ static void icl_pll_power_enable(struct drm_i915_private *dev_priv,
 	 * The spec says we need to "wait" but it also says it should be
 	 * immediate.
 	 */
-	if (intel_wait_for_register(&dev_priv->uncore, enable_reg,
-				    PLL_POWER_STATE, PLL_POWER_STATE, 1))
+	if (intel_de_wait_for_set(dev_priv, enable_reg, PLL_POWER_STATE, 1))
 		DRM_ERROR("PLL %d Power not enabled\n", pll->info->id);
 }
 
@@ -3268,8 +3249,7 @@ static void icl_pll_enable(struct drm_i915_private *dev_priv,
 	I915_WRITE(enable_reg, val);
 
 	/* Timeout is actually 600us. */
-	if (intel_wait_for_register(&dev_priv->uncore, enable_reg,
-				    PLL_LOCK, PLL_LOCK, 1))
+	if (intel_de_wait_for_set(dev_priv, enable_reg, PLL_LOCK, 1))
 		DRM_ERROR("PLL %d not locked\n", pll->info->id);
 }
 
@@ -3364,8 +3344,7 @@ static void icl_pll_disable(struct drm_i915_private *dev_priv,
 	I915_WRITE(enable_reg, val);
 
 	/* Timeout is actually 1us. */
-	if (intel_wait_for_register(&dev_priv->uncore,
-				    enable_reg, PLL_LOCK, 0, 1))
+	if (intel_de_wait_for_clear(dev_priv, enable_reg, PLL_LOCK, 1))
 		DRM_ERROR("PLL %d locked\n", pll->info->id);
 
 	/* DVFS post sequence would be here. See the comment above. */
@@ -3378,8 +3357,7 @@ static void icl_pll_disable(struct drm_i915_private *dev_priv,
 	 * The spec says we need to "wait" but it also says it should be
 	 * immediate.
 	 */
-	if (intel_wait_for_register(&dev_priv->uncore,
-				    enable_reg, PLL_POWER_STATE, 0, 1))
+	if (intel_de_wait_for_clear(dev_priv, enable_reg, PLL_POWER_STATE, 1))
 		DRM_ERROR("PLL %d Power not disabled\n", pll->info->id);
 }