diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_irq_kms.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_irq_kms.c | 61 |
1 files changed, 58 insertions, 3 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c index a0fe6232dcb6..9223296fe37b 100644 --- a/drivers/gpu/drm/radeon/radeon_irq_kms.c +++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c @@ -39,11 +39,32 @@ irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS) return radeon_irq_process(rdev); } +/* + * Handle hotplug events outside the interrupt handler proper. + */ +static void radeon_hotplug_work_func(struct work_struct *work) +{ + struct radeon_device *rdev = container_of(work, struct radeon_device, + hotplug_work); + struct drm_device *dev = rdev->ddev; + struct drm_mode_config *mode_config = &dev->mode_config; + struct drm_connector *connector; + + if (mode_config->num_connector) { + list_for_each_entry(connector, &mode_config->connector_list, head) + radeon_connector_hotplug(connector); + } + /* Just fire off a uevent and let userspace tell us what to do */ + drm_sysfs_hotplug_event(dev); +} + void radeon_driver_irq_preinstall_kms(struct drm_device *dev) { struct radeon_device *rdev = dev->dev_private; unsigned i; + INIT_WORK(&rdev->hotplug_work, radeon_hotplug_work_func); + /* Disable *all* interrupts */ rdev->irq.sw_int = false; for (i = 0; i < 2; i++) { @@ -87,17 +108,25 @@ 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 +143,29 @@ 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); +} + |