diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 59 |
1 files changed, 56 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 755d9ceb26a2..57d23f0163eb 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -45,6 +45,10 @@ * and related files, but that will be described in separate chapters. */ +static const u32 hpd_ilk[HPD_NUM_PINS] = { + [HPD_PORT_A] = DE_DP_A_HOTPLUG, +}; + static const u32 hpd_ibx[HPD_NUM_PINS] = { [HPD_CRT] = SDE_CRT_HOTPLUG, [HPD_SDVO_B] = SDE_SDVOB_HOTPLUG, @@ -1272,6 +1276,16 @@ static bool spt_port_hotplug2_long_detect(enum port port, u32 val) } } +static bool ilk_port_hotplug_long_detect(enum port port, u32 val) +{ + switch (port) { + case PORT_A: + return val & DIGITAL_PORTA_HOTPLUG_LONG_DETECT; + default: + return false; + } +} + static bool pch_port_hotplug_long_detect(enum port port, u32 val) { switch (port) { @@ -1870,6 +1884,19 @@ static void ilk_display_irq_handler(struct drm_device *dev, u32 de_iir) { struct drm_i915_private *dev_priv = dev->dev_private; enum pipe pipe; + u32 hotplug_trigger = de_iir & DE_DP_A_HOTPLUG; + + if (hotplug_trigger) { + u32 dig_hotplug_reg, pin_mask = 0, long_mask = 0; + + dig_hotplug_reg = I915_READ(DIGITAL_PORT_HOTPLUG_CNTRL); + I915_WRITE(DIGITAL_PORT_HOTPLUG_CNTRL, dig_hotplug_reg); + + intel_get_hpd_pins(&pin_mask, &long_mask, hotplug_trigger, + dig_hotplug_reg, hpd_ilk, + ilk_port_hotplug_long_detect); + intel_hpd_irq_handler(dev, pin_mask, long_mask); + } if (de_iir & DE_AUX_CHANNEL_A) dp_aux_irq_handler(dev); @@ -3111,6 +3138,28 @@ static void spt_hpd_irq_setup(struct drm_device *dev) I915_WRITE(PCH_PORT_HOTPLUG2, hotplug); } +static void ilk_hpd_irq_setup(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + u32 hotplug_irqs, hotplug, enabled_irqs; + + hotplug_irqs = DE_DP_A_HOTPLUG; + enabled_irqs = intel_hpd_enabled_irqs(dev, hpd_ilk); + + ilk_update_display_irq(dev_priv, hotplug_irqs, enabled_irqs); + + /* + * Enable digital hotplug on the CPU, and configure the DP short pulse + * duration to 2ms (which is the minimum in the Display Port spec) + */ + hotplug = I915_READ(DIGITAL_PORT_HOTPLUG_CNTRL); + hotplug &= ~DIGITAL_PORTA_PULSE_DURATION_MASK; + hotplug |= DIGITAL_PORTA_HOTPLUG_ENABLE | DIGITAL_PORTA_PULSE_DURATION_2ms; + I915_WRITE(DIGITAL_PORT_HOTPLUG_CNTRL, hotplug); + + ibx_hpd_irq_setup(dev); +} + static void bxt_hpd_irq_setup(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -3209,8 +3258,9 @@ static int ironlake_irq_postinstall(struct drm_device *dev) DE_AUX_CHANNEL_A | DE_PIPEB_CRC_DONE | DE_PIPEA_CRC_DONE | DE_POISON); - extra_mask = DE_PIPEA_VBLANK | DE_PIPEB_VBLANK | DE_PCU_EVENT | - DE_PIPEB_FIFO_UNDERRUN | DE_PIPEA_FIFO_UNDERRUN; + extra_mask = (DE_PIPEA_VBLANK | DE_PIPEB_VBLANK | DE_PCU_EVENT | + DE_PIPEB_FIFO_UNDERRUN | DE_PIPEA_FIFO_UNDERRUN | + DE_DP_A_HOTPLUG); } dev_priv->irq_mask = ~display_mask; @@ -4226,7 +4276,10 @@ void intel_irq_init(struct drm_i915_private *dev_priv) dev->driver->irq_uninstall = ironlake_irq_uninstall; dev->driver->enable_vblank = ironlake_enable_vblank; dev->driver->disable_vblank = ironlake_disable_vblank; - dev_priv->display.hpd_irq_setup = ibx_hpd_irq_setup; + if (INTEL_INFO(dev)->gen >= 7) + dev_priv->display.hpd_irq_setup = ibx_hpd_irq_setup; + else + dev_priv->display.hpd_irq_setup = ilk_hpd_irq_setup; } else { if (INTEL_INFO(dev_priv)->gen == 2) { dev->driver->irq_preinstall = i8xx_irq_preinstall; |