[Intel-gfx] [PATCH v8 3/3] drm/i915: Do not unmask PSR interruption in IRQ postinstall

[Lucas De Marchi]

On Tue, Aug 20, 2019 at 03:33:25PM -0700, Jose Souza wrote:
>No need to unmask PSR interrutpion if PSR is not enabled, better move
>the call to intel_psr_enable_source().
>
>v2: Renamed intel_psr_irq_control() to psr_irq_control() (Lucas)
>
>Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
>Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
>Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
>Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>

Reviewed-by: Lucas De Marchi <lucas.demarchi at intel.com>

Lucas De Marchi

>---
> drivers/gpu/drm/i915/display/intel_psr.c | 6 ++++--
> drivers/gpu/drm/i915/display/intel_psr.h | 1 -
> drivers/gpu/drm/i915/i915_irq.c          | 2 --
> 3 files changed, 4 insertions(+), 5 deletions(-)
>
>diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
>index 1dafe326edda..5d3531999d8b 100644
>--- a/drivers/gpu/drm/i915/display/intel_psr.c
>+++ b/drivers/gpu/drm/i915/display/intel_psr.c
>@@ -105,7 +105,7 @@ static int edp_psr_shift(enum transcoder cpu_transcoder)
> 	}
> }
>
>-void intel_psr_irq_control(struct drm_i915_private *dev_priv, u32 debug)
>+static void psr_irq_control(struct drm_i915_private *dev_priv, u32 debug)
> {
> 	u32 debug_mask, mask;
> 	enum transcoder cpu_transcoder;
>@@ -736,6 +736,8 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp,
> 		mask |= EDP_PSR_DEBUG_MASK_DISP_REG_WRITE;
>
> 	I915_WRITE(EDP_PSR_DEBUG(dev_priv->psr.transcoder), mask);
>+
>+	psr_irq_control(dev_priv, dev_priv->psr.debug);
> }
>
> static void intel_psr_enable_locked(struct drm_i915_private *dev_priv,
>@@ -1108,7 +1110,7 @@ int intel_psr_debug_set(struct drm_i915_private *dev_priv, u64 val)
>
> 	old_mode = dev_priv->psr.debug & I915_PSR_DEBUG_MODE_MASK;
> 	dev_priv->psr.debug = val;
>-	intel_psr_irq_control(dev_priv, dev_priv->psr.debug);
>+	psr_irq_control(dev_priv, dev_priv->psr.debug);
>
> 	mutex_unlock(&dev_priv->psr.lock);
>
>diff --git a/drivers/gpu/drm/i915/display/intel_psr.h b/drivers/gpu/drm/i915/display/intel_psr.h
>index dc818826f36d..46e4de8b8cd5 100644
>--- a/drivers/gpu/drm/i915/display/intel_psr.h
>+++ b/drivers/gpu/drm/i915/display/intel_psr.h
>@@ -30,7 +30,6 @@ void intel_psr_flush(struct drm_i915_private *dev_priv,
> void intel_psr_init(struct drm_i915_private *dev_priv);
> void intel_psr_compute_config(struct intel_dp *intel_dp,
> 			      struct intel_crtc_state *crtc_state);
>-void intel_psr_irq_control(struct drm_i915_private *dev_priv, u32 debug);
> void intel_psr_irq_handler(struct drm_i915_private *dev_priv, u32 psr_iir);
> void intel_psr_short_pulse(struct intel_dp *intel_dp);
> int intel_psr_wait_for_idle(const struct intel_crtc_state *new_crtc_state,
>diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
>index 37e3dd3c1a9d..77391d8325bf 100644
>--- a/drivers/gpu/drm/i915/i915_irq.c
>+++ b/drivers/gpu/drm/i915/i915_irq.c
>@@ -3684,7 +3684,6 @@ static void ironlake_irq_postinstall(struct drm_i915_private *dev_priv)
>
> 	if (IS_HASWELL(dev_priv)) {
> 		gen3_assert_iir_is_zero(uncore, EDP_PSR_IIR);
>-		intel_psr_irq_control(dev_priv, dev_priv->psr.debug);
> 		display_mask |= DE_EDP_PSR_INT_HSW;
> 	}
>
>@@ -3795,7 +3794,6 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv)
> 		de_port_enables |= GEN8_PORT_DP_A_HOTPLUG;
>
> 	gen3_assert_iir_is_zero(uncore, EDP_PSR_IIR);
>-	intel_psr_irq_control(dev_priv, dev_priv->psr.debug);
>
> 	for_each_pipe(dev_priv, pipe) {
> 		dev_priv->de_irq_mask[pipe] = ~de_pipe_masked;
>-- 
>2.22.1
>