diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_irq_kms.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_irq_kms.c | 80 |
1 files changed, 77 insertions, 3 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c index 1841145a7c4f..3cfd60fd0083 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++) { @@ -76,6 +97,7 @@ void radeon_driver_irq_uninstall_kms(struct drm_device *dev) rdev->irq.sw_int = false; for (i = 0; i < 2; i++) { rdev->irq.crtc_vblank_int[i] = false; + rdev->irq.hpd[i] = false; } radeon_irq_set(rdev); } @@ -83,21 +105,73 @@ void radeon_driver_irq_uninstall_kms(struct drm_device *dev) int radeon_irq_kms_init(struct radeon_device *rdev) { int r = 0; + int num_crtc = 2; - r = drm_vblank_init(rdev->ddev, 2); + 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; } - drm_irq_install(rdev->ddev); + /* enable msi */ + rdev->msi_enabled = 0; + /* 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) { + rdev->msi_enabled = 1; + DRM_INFO("radeon: using MSI.\n"); + } + } rdev->irq.installed = true; + r = drm_irq_install(rdev->ddev); + if (r) { + rdev->irq.installed = false; + return r; + } DRM_INFO("radeon: irq initialized.\n"); return 0; } void radeon_irq_kms_fini(struct radeon_device *rdev) { + drm_vblank_cleanup(rdev->ddev); if (rdev->irq.installed) { - rdev->irq.installed = false; drm_irq_uninstall(rdev->ddev); + rdev->irq.installed = false; + if (rdev->msi_enabled) + 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); +} + |