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i915/dsi: Configure TE interrupt for cmd mode 

Configure TE interrupt as part of the vblank enable call flow.

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)

v5: Clear IIR, remove the usage of private_flags

v6: including icl_dsi header is not needed

Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200924124209.17916-3-vandita.kulkarni@intel.com
This commit is contained in:
Vandita Kulkarni 2020-09-24 18:12:06 +05:30 committed by Jani Nikula
parent 5682a41f93
commit 9c9e97c44a
1 changed files with 48 additions and 2 deletions
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50
drivers/gpu/drm/i915/i915_irq.c
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@ -2651,12 +2651,47 @@ 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);
enum port port;
u32 tmp;
if (!(intel_crtc->mode_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 (intel_crtc->mode_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);
tmp = I915_READ(DSI_INTR_IDENT_REG(port));
I915_WRITE(DSI_INTR_IDENT_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);
@ -2735,9 +2770,13 @@ 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);
@ -3449,6 +3488,13 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv)
if (IS_GEN9_LP(dev_priv))
de_port_masked |= BXT_DE_PORT_GMBUS;
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;