diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_irq_kms.c')
-rw-r--r-- | drivers/gpu/drm/radeon/radeon_irq_kms.c | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c index a0fe623..2678997 100644 --- a/drivers/gpu/drm/radeon/radeon_irq_kms.c +++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c @@ -87,17 +87,25 @@ int radeon_irq_kms_init(struct radeon_device *rdev) if (rdev->flags & RADEON_SINGLE_CRTC) num_crtc = 1; - + spin_lock_init(&rdev->irq.sw_lock); r = drm_vblank_init(rdev->ddev, num_crtc); if (r) { return r; } /* enable msi */ rdev->msi_enabled = 0; - if (rdev->family >= CHIP_RV380) { + /* MSIs don't seem to work on my rs780; + * not sure about rs880 or other rs780s. + * Needs more investigation. + */ + if ((rdev->family >= CHIP_RV380) && + (rdev->family != CHIP_RS780) && + (rdev->family != CHIP_RS880)) { int ret = pci_enable_msi(rdev->pdev); - if (!ret) + if (!ret) { rdev->msi_enabled = 1; + DRM_INFO("radeon: using MSI.\n"); + } } drm_irq_install(rdev->ddev); rdev->irq.installed = true; @@ -114,3 +122,29 @@ void radeon_irq_kms_fini(struct radeon_device *rdev) pci_disable_msi(rdev->pdev); } } + +void radeon_irq_kms_sw_irq_get(struct radeon_device *rdev) +{ + unsigned long irqflags; + + spin_lock_irqsave(&rdev->irq.sw_lock, irqflags); + if (rdev->ddev->irq_enabled && (++rdev->irq.sw_refcount == 1)) { + rdev->irq.sw_int = true; + radeon_irq_set(rdev); + } + spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags); +} + +void radeon_irq_kms_sw_irq_put(struct radeon_device *rdev) +{ + unsigned long irqflags; + + spin_lock_irqsave(&rdev->irq.sw_lock, irqflags); + BUG_ON(rdev->ddev->irq_enabled && rdev->irq.sw_refcount <= 0); + if (rdev->ddev->irq_enabled && (--rdev->irq.sw_refcount == 0)) { + rdev->irq.sw_int = false; + radeon_irq_set(rdev); + } + spin_unlock_irqrestore(&rdev->irq.sw_lock, irqflags); +} + |