From 125641c7decd453c95f17bf81bc8cd5a893f2f66 Mon Sep 17 00:00:00 2001
From: Matt Roper <matthew.d.roper@intel.com>
Date: Mon, 2 Dec 2019 09:16:08 -0800
Subject: drm/i915/irq: Refactor gen11 display interrupt handling
Git-commit: a3265d851e28a5d87bf20edf025d7da3d21a760c
Patch-mainline: v5.6-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
Let's move handling and reset for gen11 display IRQs to their own
functions, similar to how we deal with GT interrupts. This will make
the top-level functions a bit easier to read and potentially make things
easier to deal with in the future if new platforms wind up needing
different display handling logic.
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191202171608.3361125-1-matthew.d.roper@intel.com
Reviewed-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/i915_irq.c | 57 ++++++++++++++++++++-------------
1 file changed, 35 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 46a9f7dafbf3..a5348f79114f 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -2453,6 +2453,25 @@ static inline void gen11_master_intr_enable(void __iomem * const regs)
raw_reg_write(regs, GEN11_GFX_MSTR_IRQ, GEN11_MASTER_IRQ);
}
+static void
+gen11_display_irq_handler(struct drm_i915_private *i915)
+{
+ void __iomem * const regs = i915->uncore.regs;
+ const u32 disp_ctl = raw_reg_read(regs, GEN11_DISPLAY_INT_CTL);
+
+ disable_rpm_wakeref_asserts(&i915->runtime_pm);
+ /*
+ * GEN11_DISPLAY_INT_CTL has same format as GEN8_MASTER_IRQ
+ * for the display related bits.
+ */
+ raw_reg_write(regs, GEN11_DISPLAY_INT_CTL, 0x0);
+ gen8_de_irq_handler(i915, disp_ctl);
+ raw_reg_write(regs, GEN11_DISPLAY_INT_CTL,
+ GEN11_DISPLAY_IRQ_ENABLE);
+
+ enable_rpm_wakeref_asserts(&i915->runtime_pm);
+}
+
static __always_inline irqreturn_t
__gen11_irq_handler(struct drm_i915_private * const i915,
u32 (*intr_disable)(void __iomem * const regs),
@@ -2476,21 +2495,8 @@ __gen11_irq_handler(struct drm_i915_private * const i915,
gen11_gt_irq_handler(gt, master_ctl);
/* IRQs are synced during runtime_suspend, we don't require a wakeref */
- if (master_ctl & GEN11_DISPLAY_IRQ) {
- const u32 disp_ctl = raw_reg_read(regs, GEN11_DISPLAY_INT_CTL);
-
- disable_rpm_wakeref_asserts(&i915->runtime_pm);
- /*
- * GEN11_DISPLAY_INT_CTL has same format as GEN8_MASTER_IRQ
- * for the display related bits.
- */
- raw_reg_write(regs, GEN11_DISPLAY_INT_CTL, 0x0);
- gen8_de_irq_handler(i915, disp_ctl);
- raw_reg_write(regs, GEN11_DISPLAY_INT_CTL,
- GEN11_DISPLAY_IRQ_ENABLE);
-
- enable_rpm_wakeref_asserts(&i915->runtime_pm);
- }
+ if (master_ctl & GEN11_DISPLAY_IRQ)
+ gen11_display_irq_handler(i915);
gu_misc_iir = gen11_gu_misc_irq_ack(gt, master_ctl);
@@ -2792,15 +2798,11 @@ static void gen8_irq_reset(struct drm_i915_private *dev_priv)
ibx_irq_reset(dev_priv);
}
-static void gen11_irq_reset(struct drm_i915_private *dev_priv)
+static void gen11_display_irq_reset(struct drm_i915_private *dev_priv)
{
struct intel_uncore *uncore = &dev_priv->uncore;
enum pipe pipe;
- gen11_master_intr_disable(dev_priv->uncore.regs);
-
- gen11_gt_irq_reset(&dev_priv->gt);
-
intel_uncore_write(uncore, GEN11_DISPLAY_INT_CTL, 0);
if (INTEL_GEN(dev_priv) >= 12) {
@@ -2829,13 +2831,24 @@ static void gen11_irq_reset(struct drm_i915_private *dev_priv)
GEN3_IRQ_RESET(uncore, GEN8_DE_PORT_);
GEN3_IRQ_RESET(uncore, GEN8_DE_MISC_);
GEN3_IRQ_RESET(uncore, GEN11_DE_HPD_);
- GEN3_IRQ_RESET(uncore, GEN11_GU_MISC_);
- GEN3_IRQ_RESET(uncore, GEN8_PCU_);
if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
GEN3_IRQ_RESET(uncore, SDE);
}
+static void gen11_irq_reset(struct drm_i915_private *dev_priv)
+{
+ struct intel_uncore *uncore = &dev_priv->uncore;
+
+ gen11_master_intr_disable(dev_priv->uncore.regs);
+
+ gen11_gt_irq_reset(&dev_priv->gt);
+ gen11_display_irq_reset(dev_priv);
+
+ GEN3_IRQ_RESET(uncore, GEN11_GU_MISC_);
+ GEN3_IRQ_RESET(uncore, GEN8_PCU_);
+}
+
void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv,
u8 pipe_mask)
{
--
2.28.0