diff options
| author | Alan Cox | 2012-04-25 15:38:20 +0200 |
|---|---|---|
| committer | Dave Airlie | 2012-04-27 10:24:20 +0200 |
| commit | 68cb638f9219eeb4967adf08587f4aba64923c3a (patch) | |
| tree | c65ab78fced58037a2cbc429f0b05c361a2c5b0c /drivers/gpu/drm/gma500/psb_irq.c | |
| parent | cdv: continue synching up with updated reference code (diff) | |
| download | kernel-qcow2-linux-68cb638f9219eeb4967adf08587f4aba64923c3a.tar.gz kernel-qcow2-linux-68cb638f9219eeb4967adf08587f4aba64923c3a.tar.xz kernel-qcow2-linux-68cb638f9219eeb4967adf08587f4aba64923c3a.zip | |
gma500: Add ops for hotplug support.
This provides the needed callback hooks to add hotplug display support to
the GMA36x0 devices.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/gma500/psb_irq.c')
| -rw-r--r-- | drivers/gpu/drm/gma500/psb_irq.c | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/drivers/gpu/drm/gma500/psb_irq.c b/drivers/gpu/drm/gma500/psb_irq.c index 1869586457b1..2fcdffdc9063 100644 --- a/drivers/gpu/drm/gma500/psb_irq.c +++ b/drivers/gpu/drm/gma500/psb_irq.c @@ -199,11 +199,9 @@ static void psb_vdc_interrupt(struct drm_device *dev, uint32_t vdc_stat) irqreturn_t psb_irq_handler(DRM_IRQ_ARGS) { - struct drm_device *dev = (struct drm_device *) arg; - struct drm_psb_private *dev_priv = - (struct drm_psb_private *) dev->dev_private; - - uint32_t vdc_stat, dsp_int = 0, sgx_int = 0; + struct drm_device *dev = arg; + struct drm_psb_private *dev_priv = dev->dev_private; + uint32_t vdc_stat, dsp_int = 0, sgx_int = 0, hotplug_int = 0; int handled = 0; spin_lock(&dev_priv->irqmask_lock); @@ -220,6 +218,8 @@ irqreturn_t psb_irq_handler(DRM_IRQ_ARGS) if (vdc_stat & _PSB_IRQ_SGX_FLAG) sgx_int = 1; + if (vdc_stat & _PSB_IRQ_DISP_HOTSYNC) + hotplug_int = 1; vdc_stat &= dev_priv->vdc_irq_mask; spin_unlock(&dev_priv->irqmask_lock); @@ -241,6 +241,13 @@ irqreturn_t psb_irq_handler(DRM_IRQ_ARGS) handled = 1; } + /* Note: this bit has other meanings on some devices, so we will + need to address that later if it ever matters */ + if (hotplug_int && dev_priv->ops->hotplug) { + handled = dev_priv->ops->hotplug(dev); + REG_WRITE(PORT_HOTPLUG_STAT, REG_READ(PORT_HOTPLUG_STAT)); + } + PSB_WVDC32(vdc_stat, PSB_INT_IDENTITY_R); (void) PSB_RVDC32(PSB_INT_IDENTITY_R); DRM_READMEMORYBARRIER(); @@ -273,6 +280,10 @@ void psb_irq_preinstall(struct drm_device *dev) dev_priv->vdc_irq_mask |= _MDFLD_PIPEC_EVENT_FLAG; */ + /* Revisit this area - want per device masks ? */ + if (dev_priv->ops->hotplug) + dev_priv->vdc_irq_mask |= _PSB_IRQ_DISP_HOTSYNC; + /* This register is safe even if display island is off */ PSB_WVDC32(~dev_priv->vdc_irq_mask, PSB_INT_MASK_R); spin_unlock_irqrestore(&dev_priv->irqmask_lock, irqflags); @@ -305,18 +316,23 @@ int psb_irq_postinstall(struct drm_device *dev) else psb_disable_pipestat(dev_priv, 2, PIPE_VBLANK_INTERRUPT_ENABLE); + if (dev_priv->ops->hotplug_enable) + dev_priv->ops->hotplug_enable(dev, true); + spin_unlock_irqrestore(&dev_priv->irqmask_lock, irqflags); return 0; } void psb_irq_uninstall(struct drm_device *dev) { - struct drm_psb_private *dev_priv = - (struct drm_psb_private *) dev->dev_private; + struct drm_psb_private *dev_priv = dev->dev_private; unsigned long irqflags; spin_lock_irqsave(&dev_priv->irqmask_lock, irqflags); + if (dev_priv->ops->hotplug_enable) + dev_priv->ops->hotplug_enable(dev, false); + PSB_WVDC32(0xFFFFFFFF, PSB_HWSTAM); if (dev->vblank_enabled[0]) |