| 59,6 → 59,75 |
|---|
| #define DRM_REDUNDANT_VBLIRQ_THRESH_NS 1000000 |
| |
| |
| irqreturn_t device_irq_handler(struct drm_device *dev) |
| { |
| |
| printf("video irq\n"); |
| |
| // printf("device %p driver %p handler %p\n", dev, dev->driver, dev->driver->irq_handler) ; |
| |
| return dev->driver->irq_handler(0, dev); |
| } |
| |
| /** |
| * Install IRQ handler. |
| * |
| * \param dev DRM device. |
| * |
| * Initializes the IRQ related data. Installs the handler, calling the driver |
| * \c irq_preinstall() and \c irq_postinstall() functions |
| * before and after the installation. |
| */ |
| int drm_irq_install(struct drm_device *dev) |
| { |
| int ret; |
| unsigned long sh_flags = 0; |
| char *irqname; |
| |
| |
| if (drm_dev_to_irq(dev) == 0) |
| return -EINVAL; |
| |
| mutex_lock(&dev->struct_mutex); |
| |
| /* Driver must have been initialized */ |
| if (!dev->dev_private) { |
| mutex_unlock(&dev->struct_mutex); |
| return -EINVAL; |
| } |
| |
| if (dev->irq_enabled) { |
| mutex_unlock(&dev->struct_mutex); |
| return -EBUSY; |
| } |
| dev->irq_enabled = 1; |
| mutex_unlock(&dev->struct_mutex); |
| |
| DRM_DEBUG("irq=%d\n", drm_dev_to_irq(dev)); |
| |
| /* Before installing handler */ |
| if (dev->driver->irq_preinstall) |
| dev->driver->irq_preinstall(dev); |
| |
| ret = !AttachIntHandler(drm_dev_to_irq(dev), device_irq_handler, (u32)dev); |
| |
| /* After installing handler */ |
| if (dev->driver->irq_postinstall) |
| ret = dev->driver->irq_postinstall(dev); |
| |
| if (ret < 0) { |
| DRM_ERROR(__FUNCTION__); |
| } |
| |
| u16_t cmd = PciRead16(dev->pdev->busnr, dev->pdev->devfn, 4); |
| cmd&= ~(1<<10); |
| PciWrite16(dev->pdev->busnr, dev->pdev->devfn, 4, cmd); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL(drm_irq_install); |
| |
| |
| static inline u64 div_u64(u64 dividend, u32 divisor) |
| { |
| u32 remainder; |
| 82,7 → 151,6 |
|---|
| return div_u64(dividend, d); |
| } |
| |
| |
| /** |
| * drm_calc_timestamping_constants - Calculate and |
| * store various constants which are later needed by |
| 175,6 → 243,10 |
|---|
| #if 0 |
| unsigned long irqflags; |
| |
| /* vblank is not initialized (IRQ not installed ?), or has been freed */ |
| if (!dev->num_crtcs) |
| return; |
| |
| if (dev->vblank_inmodeset[crtc]) { |
| spin_lock_irqsave(&dev->vbl_lock, irqflags); |
| dev->vblank_disable_allowed = 1; |
| 188,3 → 260,7 |
|---|
| #endif |
| } |
| EXPORT_SYMBOL(drm_vblank_post_modeset); |
| |
| |
| |
| |