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Rev 3480 Rev 4075
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 * vblank irq in drm_handle_vblank(). 1 msec should be ok.
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 * vblank irq in drm_handle_vblank(). 1 msec should be ok.
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 */
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 */
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#define DRM_REDUNDANT_VBLIRQ_THRESH_NS 1000000
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#define DRM_REDUNDANT_VBLIRQ_THRESH_NS 1000000
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irqreturn_t device_irq_handler(struct drm_device *dev)
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{
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    printf("video irq\n");
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//    printf("device %p driver %p handler %p\n", dev, dev->driver, dev->driver->irq_handler) ;
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    return dev->driver->irq_handler(0, dev);
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}
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/**
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 * Install IRQ handler.
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 *
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 * \param dev DRM device.
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 *
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 * Initializes the IRQ related data. Installs the handler, calling the driver
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 * \c irq_preinstall() and \c irq_postinstall() functions
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 * before and after the installation.
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 */
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int drm_irq_install(struct drm_device *dev)
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{
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	int ret;
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    unsigned long sh_flags = 0;
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	char *irqname;
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	if (drm_dev_to_irq(dev) == 0)
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		return -EINVAL;
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    mutex_lock(&dev->struct_mutex);
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    /* Driver must have been initialized */
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    if (!dev->dev_private) {
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            mutex_unlock(&dev->struct_mutex);
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            return -EINVAL;
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    }
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    if (dev->irq_enabled) {
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            mutex_unlock(&dev->struct_mutex);
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            return -EBUSY;
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    }
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    dev->irq_enabled = 1;
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    mutex_unlock(&dev->struct_mutex);
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    DRM_DEBUG("irq=%d\n", drm_dev_to_irq(dev));
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    /* Before installing handler */
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    if (dev->driver->irq_preinstall)
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            dev->driver->irq_preinstall(dev);
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    ret = !AttachIntHandler(drm_dev_to_irq(dev), device_irq_handler, (u32)dev);
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    /* After installing handler */
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    if (dev->driver->irq_postinstall)
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            ret = dev->driver->irq_postinstall(dev);
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    if (ret < 0) {
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            DRM_ERROR(__FUNCTION__);
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    }
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    u16_t cmd = PciRead16(dev->pdev->busnr, dev->pdev->devfn, 4);
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    cmd&= ~(1<<10);
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    PciWrite16(dev->pdev->busnr, dev->pdev->devfn, 4, cmd);
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    return ret;
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}
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EXPORT_SYMBOL(drm_irq_install);
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static inline u64 div_u64(u64 dividend, u32 divisor)
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static inline u64 div_u64(u64 dividend, u32 divisor)
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{
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{
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        u32 remainder;
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        u32 remainder;
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                d = divisor;
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                d = divisor;
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        return div_u64(dividend, d);
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        return div_u64(dividend, d);
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}
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}
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/**
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/**
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 * drm_calc_timestamping_constants - Calculate and
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 * drm_calc_timestamping_constants - Calculate and
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 * store various constants which are later needed by
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 * store various constants which are later needed by
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void drm_vblank_post_modeset(struct drm_device *dev, int crtc)
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void drm_vblank_post_modeset(struct drm_device *dev, int crtc)
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{
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{
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#if 0
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#if 0
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    unsigned long irqflags;
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    unsigned long irqflags;
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	/* vblank is not initialized (IRQ not installed ?), or has been freed */
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	if (!dev->num_crtcs)
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		return;
177 
 
 249 
 
178 
    if (dev->vblank_inmodeset[crtc]) {
 250 
    if (dev->vblank_inmodeset[crtc]) {
179 
        spin_lock_irqsave(&dev->vbl_lock, irqflags);
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        spin_lock_irqsave(&dev->vbl_lock, irqflags);
180 
        dev->vblank_disable_allowed = 1;
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        dev->vblank_disable_allowed = 1;
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        dev->vblank_inmodeset[crtc] = 0;
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        dev->vblank_inmodeset[crtc] = 0;
187 
    }
 259 
    }
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#endif
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#endif
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}
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}
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EXPORT_SYMBOL(drm_vblank_post_modeset);
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EXPORT_SYMBOL(drm_vblank_post_modeset);
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>
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>
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            -
            
 

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