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, 14 insertions, 34 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 59e1988dd362..eda28f251d93 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -1077,9 +1077,8 @@ intel_wait_for_pipe_off(const struct intel_crtc_state *old_crtc_state)
 		i915_reg_t reg = PIPECONF(cpu_transcoder);
 
 		/* Wait for the Pipe State to go off */
-		if (intel_wait_for_register(&dev_priv->uncore,
-					    reg, I965_PIPECONF_ACTIVE, 0,
-					    100))
+		if (intel_de_wait_for_clear(dev_priv, reg,
+					    I965_PIPECONF_ACTIVE, 100))
 			WARN(1, "pipe_off wait timed out\n");
 	} else {
 		intel_wait_for_pipe_scanline_stopped(crtc);
@@ -1383,11 +1382,7 @@ static void _vlv_enable_pll(struct intel_crtc *crtc,
 	POSTING_READ(DPLL(pipe));
 	udelay(150);
 
-	if (intel_wait_for_register(&dev_priv->uncore,
-				    DPLL(pipe),
-				    DPLL_LOCK_VLV,
-				    DPLL_LOCK_VLV,
-				    1))
+	if (intel_de_wait_for_set(dev_priv, DPLL(pipe), DPLL_LOCK_VLV, 1))
 		DRM_ERROR("DPLL %d failed to lock\n", pipe);
 }
 
@@ -1436,9 +1431,7 @@ static void _chv_enable_pll(struct intel_crtc *crtc,
 	I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll);
 
 	/* Check PLL is locked */
-	if (intel_wait_for_register(&dev_priv->uncore,
-				    DPLL(pipe), DPLL_LOCK_VLV, DPLL_LOCK_VLV,
-				    1))
+	if (intel_de_wait_for_set(dev_priv, DPLL(pipe), DPLL_LOCK_VLV, 1))
 		DRM_ERROR("PLL %d failed to lock\n", pipe);
 }
 
@@ -1617,9 +1610,8 @@ void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
 		BUG();
 	}
 
-	if (intel_wait_for_register(&dev_priv->uncore,
-				    dpll_reg, port_mask, expected_mask,
-				    1000))
+	if (intel_de_wait_for_register(dev_priv, dpll_reg,
+				       port_mask, expected_mask, 1000))
 		WARN(1, "timed out waiting for port %c ready: got 0x%x, expected 0x%x\n",
 		     port_name(dport->base.port),
 		     I915_READ(dpll_reg) & port_mask, expected_mask);
@@ -1678,9 +1670,7 @@ static void ironlake_enable_pch_transcoder(const struct intel_crtc_state *crtc_s
 	}
 
 	I915_WRITE(reg, val | TRANS_ENABLE);
-	if (intel_wait_for_register(&dev_priv->uncore,
-				    reg, TRANS_STATE_ENABLE, TRANS_STATE_ENABLE,
-				    100))
+	if (intel_de_wait_for_set(dev_priv, reg, TRANS_STATE_ENABLE, 100))
 		DRM_ERROR("failed to enable transcoder %c\n", pipe_name(pipe));
 }
 
@@ -1708,11 +1698,8 @@ static void lpt_enable_pch_transcoder(struct drm_i915_private *dev_priv,
 		val |= TRANS_PROGRESSIVE;
 
 	I915_WRITE(LPT_TRANSCONF, val);
-	if (intel_wait_for_register(&dev_priv->uncore,
-				    LPT_TRANSCONF,
-				    TRANS_STATE_ENABLE,
-				    TRANS_STATE_ENABLE,
-				    100))
+	if (intel_de_wait_for_set(dev_priv, LPT_TRANSCONF,
+				  TRANS_STATE_ENABLE, 100))
 		DRM_ERROR("Failed to enable PCH transcoder\n");
 }
 
@@ -1734,9 +1721,7 @@ static void ironlake_disable_pch_transcoder(struct drm_i915_private *dev_priv,
 	val &= ~TRANS_ENABLE;
 	I915_WRITE(reg, val);
 	/* wait for PCH transcoder off, transcoder state */
-	if (intel_wait_for_register(&dev_priv->uncore,
-				    reg, TRANS_STATE_ENABLE, 0,
-				    50))
+	if (intel_de_wait_for_clear(dev_priv, reg, TRANS_STATE_ENABLE, 50))
 		DRM_ERROR("failed to disable transcoder %c\n", pipe_name(pipe));
 
 	if (HAS_PCH_CPT(dev_priv)) {
@@ -1756,9 +1741,8 @@ void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv)
 	val &= ~TRANS_ENABLE;
 	I915_WRITE(LPT_TRANSCONF, val);
 	/* wait for PCH transcoder off, transcoder state */
-	if (intel_wait_for_register(&dev_priv->uncore,
-				    LPT_TRANSCONF, TRANS_STATE_ENABLE, 0,
-				    50))
+	if (intel_de_wait_for_clear(dev_priv, LPT_TRANSCONF,
+				    TRANS_STATE_ENABLE, 50))
 		DRM_ERROR("Failed to disable PCH transcoder\n");
 
 	/* Workaround: clear timing override bit. */
@@ -5697,9 +5681,7 @@ void hsw_enable_ips(const struct intel_crtc_state *crtc_state)
 		 * and don't wait for vblanks until the end of crtc_enable, then
 		 * the HW state readout code will complain that the expected
 		 * IPS_CTL value is not the one we read. */
-		if (intel_wait_for_register(&dev_priv->uncore,
-					    IPS_CTL, IPS_ENABLE, IPS_ENABLE,
-					    50))
+		if (intel_de_wait_for_set(dev_priv, IPS_CTL, IPS_ENABLE, 50))
 			DRM_ERROR("Timed out waiting for IPS enable\n");
 	}
 }
@@ -5720,9 +5702,7 @@ void hsw_disable_ips(const struct intel_crtc_state *crtc_state)
 		 * 42ms timeout value leads to occasional timeouts so use 100ms
 		 * instead.
 		 */
-		if (intel_wait_for_register(&dev_priv->uncore,
-					    IPS_CTL, IPS_ENABLE, 0,
-					    100))
+		if (intel_de_wait_for_clear(dev_priv, IPS_CTL, IPS_ENABLE, 100))
 			DRM_ERROR("Timed out waiting for IPS disable\n");
 	} else {
 		I915_WRITE(IPS_CTL, 0);