drm/i915: Add for_each_pipe_masked()

for_each_pipe_masked() can be used to iterate over the pipes
included in the user provided pipe mask. Removes a few lines of
duplicated code.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1455907651-16397-2-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 9cbcb5d..9e76bfc 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -261,6 +261,9 @@ struct i915_hotplug {
 
 #define for_each_pipe(__dev_priv, __p) \
        for ((__p) = 0; (__p) < INTEL_INFO(__dev_priv)->num_pipes; (__p)++)
+#define for_each_pipe_masked(__dev_priv, __p, __mask) \
+       for ((__p) = 0; (__p) < INTEL_INFO(__dev_priv)->num_pipes; (__p)++) \
+               for_each_if ((__mask) & (1 << (__p)))
 #define for_each_plane(__dev_priv, __pipe, __p)                                \
        for ((__p) = 0;                                                 \
             (__p) < INTEL_INFO(__dev_priv)->num_sprites[(__pipe)] + 1; \

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index a9048e1..d1a46ef 100644 (file)
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -3349,33 +3349,24 @@ void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv,
                                     unsigned int pipe_mask)
 {
        uint32_t extra_ier = GEN8_PIPE_VBLANK | GEN8_PIPE_FIFO_UNDERRUN;
+       enum pipe pipe;
 
        spin_lock_irq(&dev_priv->irq_lock);
-       if (pipe_mask & 1 << PIPE_A)
-               GEN8_IRQ_INIT_NDX(DE_PIPE, PIPE_A,
-                                 dev_priv->de_irq_mask[PIPE_A],
-                                 ~dev_priv->de_irq_mask[PIPE_A] | extra_ier);
-       if (pipe_mask & 1 << PIPE_B)
-               GEN8_IRQ_INIT_NDX(DE_PIPE, PIPE_B,
-                                 dev_priv->de_irq_mask[PIPE_B],
-                                 ~dev_priv->de_irq_mask[PIPE_B] | extra_ier);
-       if (pipe_mask & 1 << PIPE_C)
-               GEN8_IRQ_INIT_NDX(DE_PIPE, PIPE_C,
-                                 dev_priv->de_irq_mask[PIPE_C],
-                                 ~dev_priv->de_irq_mask[PIPE_C] | extra_ier);
+       for_each_pipe_masked(dev_priv, pipe, pipe_mask)
+               GEN8_IRQ_INIT_NDX(DE_PIPE, pipe,
+                                 dev_priv->de_irq_mask[pipe],
+                                 ~dev_priv->de_irq_mask[pipe] | extra_ier);
        spin_unlock_irq(&dev_priv->irq_lock);
 }
 
 void gen8_irq_power_well_pre_disable(struct drm_i915_private *dev_priv,
                                     unsigned int pipe_mask)
 {
+       enum pipe pipe;
+
        spin_lock_irq(&dev_priv->irq_lock);
-       if (pipe_mask & 1 << PIPE_A)
-               GEN8_IRQ_RESET_NDX(DE_PIPE, PIPE_A);
-       if (pipe_mask & 1 << PIPE_B)
-               GEN8_IRQ_RESET_NDX(DE_PIPE, PIPE_B);
-       if (pipe_mask & 1 << PIPE_C)
-               GEN8_IRQ_RESET_NDX(DE_PIPE, PIPE_C);
+       for_each_pipe_masked(dev_priv, pipe, pipe_mask)
+               GEN8_IRQ_RESET_NDX(DE_PIPE, pipe);
        spin_unlock_irq(&dev_priv->irq_lock);
 
        /* make sure we're done processing display irqs */