We need to configure TE interrupt in two places.
Port interrupt and DSI interrupt mask registers.
v2: Hide the private flags check inside configure_te (Jani)
v3: Fix the position of masking de_port_masked for DSI_TE.
v4: Simplify the caller of configure_te (Jani)
Signed-off-by: Vandita Kulkarni <vandita.kulkarni@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_irq.c | 49 +++++++++++++++++++++++++++++++--
1 file changed, 47 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 5c2b419c0603..ea0fa957b363 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -41,6 +41,7 @@
#include "display/intel_hotplug.h"
#include "display/intel_lpe_audio.h"
#include "display/intel_psr.h"
+#include "display/intel_dsi.h"
#include "gt/intel_gt.h"
#include "gt/intel_gt_irq.h"
@@ -2587,12 +2588,45 @@ int ilk_enable_vblank(struct drm_crtc *crtc)
return 0;
}
+static bool gen11_dsi_configure_te(struct intel_crtc *intel_crtc,
+ bool enable)
+{
+ struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
+ struct intel_crtc_state *config = intel_crtc->config;
+ struct drm_display_mode *mode = &config->hw.adjusted_mode;
+ enum port port;
+ u32 tmp;
+
+ if (!(mode->private_flags &
+ (I915_MODE_FLAG_DSI_USE_TE1 | I915_MODE_FLAG_DSI_USE_TE0)))
+ return false;
+
+ /* for dual link cases we consider TE from slave */
+ if (mode->private_flags & I915_MODE_FLAG_DSI_USE_TE1)
+ port = PORT_B;
+ else
+ port = PORT_A;
+
+ tmp = I915_READ(DSI_INTR_MASK_REG(port));
+ if (enable)
+ tmp &= ~DSI_TE_EVENT;
+ else
+ tmp |= DSI_TE_EVENT;
+
+ I915_WRITE(DSI_INTR_MASK_REG(port), tmp);
+ return true;
+}
+
int bdw_enable_vblank(struct drm_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->dev);
- enum pipe pipe = to_intel_crtc(crtc)->pipe;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ enum pipe pipe = intel_crtc->pipe;
unsigned long irqflags;
+ if (gen11_dsi_configure_te(intel_crtc, true))
+ return 0;
+
spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
bdw_enable_pipe_irq(dev_priv, pipe, GEN8_PIPE_VBLANK);
spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
@@ -2658,9 +2692,13 @@ void ilk_disable_vblank(struct drm_crtc *crtc)
void bdw_disable_vblank(struct drm_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->dev);
- enum pipe pipe = to_intel_crtc(crtc)->pipe;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ enum pipe pipe = intel_crtc->pipe;
unsigned long irqflags;
+ if (gen11_dsi_configure_te(intel_crtc, false))
+ return;
+
spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
bdw_disable_pipe_irq(dev_priv, pipe, GEN8_PIPE_VBLANK);
spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
@@ -3353,6 +3391,13 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv)
if (IS_CNL_WITH_PORT_F(dev_priv) || INTEL_GEN(dev_priv) >= 11)
de_port_masked |= CNL_AUX_CHANNEL_F;
+ if (INTEL_GEN(dev_priv) >= 11) {
+ enum port port;
+
+ if (intel_bios_is_dsi_present(dev_priv, &port))
+ de_port_masked |= DSI0_TE | DSI1_TE;
+ }
+
de_pipe_enables = de_pipe_masked | GEN8_PIPE_VBLANK |
GEN8_PIPE_FIFO_UNDERRUN;
--
2.21.0.5.gaeb582a
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