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author | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2016-01-12 16:04:07 +0000 |
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committer | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2016-01-13 10:01:53 +0000 |
commit | f11a0f46a2c32207a47322610ae4b214b5bab23e (patch) | |
tree | f0e6cf2226eafbfa6184348f88c66609c02dff7e /drivers/gpu/drm/i915/i915_irq.c | |
parent | e32192e1ae9884200ee340e7c839bf24f4f1f928 (diff) | |
download | op-kernel-dev-f11a0f46a2c32207a47322610ae4b214b5bab23e.zip op-kernel-dev-f11a0f46a2c32207a47322610ae4b214b5bab23e.tar.gz |
drm/i915/gen8: Factor out display interrupt handling
Tidy quite long interrupt service routine by factoring out
the display part.
This simplifies the exit path a little bit, makes the code
a bit more readable, and potentialy makes code reuse in the
future easier.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1452614647-13973-2-git-send-email-tvrtko.ursulin@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_irq.c')
-rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 53 |
1 files changed, 31 insertions, 22 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 7972cee..25a8937 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -2264,31 +2264,14 @@ static void bxt_hpd_irq_handler(struct drm_device *dev, u32 hotplug_trigger, intel_hpd_irq_handler(dev, pin_mask, long_mask); } -static irqreturn_t gen8_irq_handler(int irq, void *arg) +static irqreturn_t +gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl) { - struct drm_device *dev = arg; - struct drm_i915_private *dev_priv = dev->dev_private; - u32 master_ctl, iir; + struct drm_device *dev = dev_priv->dev; irqreturn_t ret = IRQ_NONE; + u32 iir; enum pipe pipe; - if (!intel_irqs_enabled(dev_priv)) - return IRQ_NONE; - - /* IRQs are synced during runtime_suspend, we don't require a wakeref */ - disable_rpm_wakeref_asserts(dev_priv); - - master_ctl = I915_READ_FW(GEN8_MASTER_IRQ); - master_ctl &= ~GEN8_MASTER_IRQ_CONTROL; - if (!master_ctl) - goto out; - - I915_WRITE_FW(GEN8_MASTER_IRQ, 0); - - /* Find, clear, then process each source of interrupt */ - - ret = gen8_gt_irq_handler(dev_priv, master_ctl); - if (master_ctl & GEN8_DE_MISC_IRQ) { iir = I915_READ(GEN8_DE_MISC_IIR); if (iir) { @@ -2422,10 +2405,36 @@ static irqreturn_t gen8_irq_handler(int irq, void *arg) } } + return ret; +} + +static irqreturn_t gen8_irq_handler(int irq, void *arg) +{ + struct drm_device *dev = arg; + struct drm_i915_private *dev_priv = dev->dev_private; + u32 master_ctl; + irqreturn_t ret; + + if (!intel_irqs_enabled(dev_priv)) + return IRQ_NONE; + + master_ctl = I915_READ_FW(GEN8_MASTER_IRQ); + master_ctl &= ~GEN8_MASTER_IRQ_CONTROL; + if (!master_ctl) + return IRQ_NONE; + + I915_WRITE_FW(GEN8_MASTER_IRQ, 0); + + /* IRQs are synced during runtime_suspend, we don't require a wakeref */ + disable_rpm_wakeref_asserts(dev_priv); + + /* Find, clear, then process each source of interrupt */ + ret = gen8_gt_irq_handler(dev_priv, master_ctl); + ret |= gen8_de_irq_handler(dev_priv, master_ctl); + I915_WRITE_FW(GEN8_MASTER_IRQ, GEN8_MASTER_IRQ_CONTROL); POSTING_READ_FW(GEN8_MASTER_IRQ); -out: enable_rpm_wakeref_asserts(dev_priv); return ret; |