From: Daniel Vetter <daniel.vetter@xxxxxxxx>
The definitions for the error register should be valid on bdw/skl too,
but there we haven't even enabled DE_MISC handling yet.
Somewhat confusing the the moved register offset on bdw is only for
the _CTL/_AUX register, and that _IIR/IMR stayed where they have been
on bdw.
v2: Fixes from Ville.
v3: From DK
* Rebased on drm-tip
* Removed BDW IIR bit definition, looks like an unintentional change that
should be in the following patch.
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_irq.c | 34 ++++++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/i915_reg.h | 8 ++++++++
drivers/gpu/drm/i915/intel_psr.c | 3 ++-
3 files changed, 44 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 44eef355e12c..e94a835b7515 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -2392,6 +2392,26 @@ static void ilk_display_irq_handler(struct drm_i915_private *dev_priv,
ironlake_rps_change_irq_handler(dev_priv);
}
+static void hsw_edp_psr_irq_handler(struct drm_i915_private *dev_priv)
+{
+ u32 edp_psr_iir = I915_READ(EDP_PSR_IIR);
+
+ if (edp_psr_iir & EDP_PSR_ERROR)
+ DRM_DEBUG_KMS("PSR error\n");
+
+ if (edp_psr_iir & EDP_PSR_PRE_ENTRY) {
+ DRM_DEBUG_KMS("PSR prepare entry in 2 vblanks\n");
+ I915_WRITE(EDP_PSR_IMR, EDP_PSR_PRE_ENTRY);
+ }
+
+ if (edp_psr_iir & EDP_PSR_POST_EXIT) {
+ DRM_DEBUG_KMS("PSR exit completed\n");
+ I915_WRITE(EDP_PSR_IMR, 0);
+ }
+
+ I915_WRITE(EDP_PSR_IIR, edp_psr_iir);
+}
+
static void ivb_display_irq_handler(struct drm_i915_private *dev_priv,
u32 de_iir)
{
@@ -2404,6 +2424,9 @@ static void ivb_display_irq_handler(struct drm_i915_private *dev_priv,
if (de_iir & DE_ERR_INT_IVB)
ivb_err_int_handler(dev_priv);
+ if (de_iir & DE_EDP_PSR_INT_HSW)
+ hsw_edp_psr_irq_handler(dev_priv);
+
if (de_iir & DE_AUX_CHANNEL_A_IVB)
dp_aux_irq_handler(dev_priv);
@@ -3252,6 +3275,11 @@ static void ironlake_irq_reset(struct drm_device *dev)
if (IS_GEN7(dev_priv))
I915_WRITE(GEN7_ERR_INT, 0xffffffff);
+ if (IS_HASWELL(dev_priv)) {
+ I915_WRITE(EDP_PSR_IMR, 0xffffffff);
+ I915_WRITE(EDP_PSR_IIR, 0xffffffff);
+ }
+
gen5_gt_irq_reset(dev_priv);
ibx_irq_reset(dev_priv);
@@ -3663,6 +3691,12 @@ static int ironlake_irq_postinstall(struct drm_device *dev)
DE_DP_A_HOTPLUG);
}
+ if (IS_HASWELL(dev_priv)) {
+ gen3_assert_iir_is_zero(dev_priv, EDP_PSR_IIR);
+ I915_WRITE(EDP_PSR_IMR, 0);
+ display_mask |= DE_EDP_PSR_INT_HSW;
+ }
+
dev_priv->irq_mask = ~display_mask;
ibx_irq_pre_postinstall(dev);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 1e000f3004cb..3447f03eac3d 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3828,6 +3828,13 @@ enum {
#define EDP_PSR_TP1_TIME_0us (3<<4)
#define EDP_PSR_IDLE_FRAME_SHIFT 0
+/* Bspec claims those aren't shifted but stay at 0x64800 */
+#define EDP_PSR_IMR _MMIO(0x64834)
+#define EDP_PSR_IIR _MMIO(0x64838)
+#define EDP_PSR_ERROR (1<<2)
+#define EDP_PSR_POST_EXIT (1<<1)
+#define EDP_PSR_PRE_ENTRY (1<<0)
+
#define EDP_PSR_AUX_CTL _MMIO(dev_priv->psr_mmio_base + 0x10)
#define EDP_PSR_AUX_DATA(i) _MMIO(dev_priv->psr_mmio_base + 0x14 + (i) * 4) /* 5 registers */
@@ -6628,6 +6635,7 @@ enum {
#define DE_PCH_EVENT_IVB (1<<28)
#define DE_DP_A_HOTPLUG_IVB (1<<27)
#define DE_AUX_CHANNEL_A_IVB (1<<26)
+#define DE_EDP_PSR_INT_HSW (1<<19)
#define DE_SPRITEC_FLIP_DONE_IVB (1<<14)
#define DE_PLANEC_FLIP_DONE_IVB (1<<13)
#define DE_PIPEC_VBLANK_IVB (1<<10)
diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index 317cb4a12693..27dfd507a4f7 100644
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -613,7 +613,8 @@ static void hsw_psr_enable_source(struct intel_dp *intel_dp,
I915_WRITE(EDP_PSR_DEBUG,
EDP_PSR_DEBUG_MASK_MEMUP |
EDP_PSR_DEBUG_MASK_HPD |
- EDP_PSR_DEBUG_MASK_LPSP);
+ EDP_PSR_DEBUG_MASK_LPSP |
+ EDP_PSR_DEBUG_MASK_REG_WRITE);
}
}
--
2.14.1
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