drm/i915/psr: Use intel_psr_exit() in intel_psr_disable_source()

Both functions have the same code to disable PSR, so let's reuse that
code instead of duplicate.

Suggested-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181106190843.18009-1-jose.souza@intel.com

diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index bc2d883..2ecc2db 100644 (file)
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -657,6 +657,25 @@ unlock:
        mutex_unlock(&dev_priv->psr.lock);
 }
 
+static void intel_psr_exit(struct drm_i915_private *dev_priv)
+{
+       u32 val;
+
+       if (!dev_priv->psr.active)
+               return;
+
+       if (dev_priv->psr.psr2_enabled) {
+               val = I915_READ(EDP_PSR2_CTL);
+               WARN_ON(!(val & EDP_PSR2_ENABLE));
+               I915_WRITE(EDP_PSR2_CTL, val & ~EDP_PSR2_ENABLE);
+       } else {
+               val = I915_READ(EDP_PSR_CTL);
+               WARN_ON(!(val & EDP_PSR_ENABLE));
+               I915_WRITE(EDP_PSR_CTL, val & ~EDP_PSR_ENABLE);
+       }
+       dev_priv->psr.active = false;
+}
+
 static void
 intel_psr_disable_source(struct intel_dp *intel_dp)
 {
@@ -666,20 +685,14 @@ intel_psr_disable_source(struct intel_dp *intel_dp)
                i915_reg_t psr_status;
                u32 psr_status_mask;
 
+               intel_psr_exit(dev_priv);
+
                if (dev_priv->psr.psr2_enabled) {
                        psr_status = EDP_PSR2_STATUS;
                        psr_status_mask = EDP_PSR2_STATUS_STATE_MASK;
-
-                       I915_WRITE(EDP_PSR2_CTL,
-                                  I915_READ(EDP_PSR2_CTL) &
-                                  ~(EDP_PSR2_ENABLE | EDP_SU_TRACK_ENABLE));
-
                } else {
                        psr_status = EDP_PSR_STATUS;
                        psr_status_mask = EDP_PSR_STATUS_STATE_MASK;
-
-                       I915_WRITE(EDP_PSR_CTL,
-                                  I915_READ(EDP_PSR_CTL) & ~EDP_PSR_ENABLE);
                }
 
                /* Wait till PSR is idle */
@@ -687,8 +700,6 @@ intel_psr_disable_source(struct intel_dp *intel_dp)
                                            psr_status, psr_status_mask, 0,
                                            2000))
                        DRM_ERROR("Timed out waiting for PSR Idle State\n");
-
-               dev_priv->psr.active = false;
        } else {
                if (dev_priv->psr.psr2_enabled)
                        WARN_ON(I915_READ(EDP_PSR2_CTL) & EDP_PSR2_ENABLE);
@@ -926,25 +937,6 @@ unlock:
        mutex_unlock(&dev_priv->psr.lock);
 }
 
-static void intel_psr_exit(struct drm_i915_private *dev_priv)
-{
-       u32 val;
-
-       if (!dev_priv->psr.active)
-               return;
-
-       if (dev_priv->psr.psr2_enabled) {
-               val = I915_READ(EDP_PSR2_CTL);
-               WARN_ON(!(val & EDP_PSR2_ENABLE));
-               I915_WRITE(EDP_PSR2_CTL, val & ~EDP_PSR2_ENABLE);
-       } else {
-               val = I915_READ(EDP_PSR_CTL);
-               WARN_ON(!(val & EDP_PSR_ENABLE));
-               I915_WRITE(EDP_PSR_CTL, val & ~EDP_PSR_ENABLE);
-       }
-       dev_priv->psr.active = false;
-}
-
 /**
  * intel_psr_invalidate - Invalidade PSR
  * @dev_priv: i915 device