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| author | Rongrong Zou <zourongrong@gmail.com> | 2016-11-16 15:57:01 +0300 |
|---|---|---|
| committer | Rongrong Zou <zourongrong@gmail.com> | 2016-11-17 10:26:27 +0300 |
| commit | 1d98b91611725ebf5e9055c737539de1c8cd9e95 (patch) | |
| tree | 02061acdd639853dd40ee5fa9469690c5f16cb07 /drivers/gpu/drm/hisilicon | |
| parent | 5294967f4ae4b3fa06c6776ee65bb6697b56097e (diff) | |
| download | linux-1d98b91611725ebf5e9055c737539de1c8cd9e95.tar.xz | |
drm/hisilicon/hibmc: Add support for vblank interrupt
Add vblank interrupt.
Signed-off-by: Rongrong Zou <zourongrong@gmail.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Xinliang Liu <xinliang.liu@linaro.org>
Acked-by: Sean Paul <seanpaul@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/hisilicon')
| -rw-r--r-- | drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 56 | ||||
| -rw-r--r-- | drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h | 1 |
2 files changed, 56 insertions, 1 deletions
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c index c13364407e2e..73ba8b05f1da 100644 --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c @@ -39,16 +39,45 @@ static const struct file_operations hibmc_fops = { static int hibmc_enable_vblank(struct drm_device *dev, unsigned int pipe) { + struct hibmc_drm_private *priv = + (struct hibmc_drm_private *)dev->dev_private; + + writel(HIBMC_RAW_INTERRUPT_EN_VBLANK(1), + priv->mmio + HIBMC_RAW_INTERRUPT_EN); + return 0; } static void hibmc_disable_vblank(struct drm_device *dev, unsigned int pipe) { + struct hibmc_drm_private *priv = + (struct hibmc_drm_private *)dev->dev_private; + + writel(HIBMC_RAW_INTERRUPT_EN_VBLANK(0), + priv->mmio + HIBMC_RAW_INTERRUPT_EN); +} + +irqreturn_t hibmc_drm_interrupt(int irq, void *arg) +{ + struct drm_device *dev = (struct drm_device *)arg; + struct hibmc_drm_private *priv = + (struct hibmc_drm_private *)dev->dev_private; + u32 status; + + status = readl(priv->mmio + HIBMC_RAW_INTERRUPT); + + if (status & HIBMC_RAW_INTERRUPT_VBLANK(1)) { + writel(HIBMC_RAW_INTERRUPT_VBLANK(1), + priv->mmio + HIBMC_RAW_INTERRUPT); + drm_handle_vblank(dev, 0); + } + + return IRQ_HANDLED; } static struct drm_driver hibmc_driver = { .driver_features = DRIVER_GEM | DRIVER_MODESET | - DRIVER_ATOMIC, + DRIVER_ATOMIC | DRIVER_HAVE_IRQ, .fops = &hibmc_fops, .name = "hibmc", .date = "20160828", @@ -62,6 +91,7 @@ static struct drm_driver hibmc_driver = { .dumb_create = hibmc_dumb_create, .dumb_map_offset = hibmc_dumb_mmap_offset, .dumb_destroy = drm_gem_dumb_destroy, + .irq_handler = hibmc_drm_interrupt, }; static int hibmc_pm_suspend(struct device *dev) @@ -268,6 +298,13 @@ static int hibmc_unload(struct drm_device *dev) struct hibmc_drm_private *priv = dev->dev_private; hibmc_fbdev_fini(priv); + + if (dev->irq_enabled) + drm_irq_uninstall(dev); + if (priv->msi_enabled) + pci_disable_msi(dev->pdev); + drm_vblank_cleanup(dev); + hibmc_kms_fini(priv); hibmc_mm_fini(priv); dev->dev_private = NULL; @@ -299,6 +336,23 @@ static int hibmc_load(struct drm_device *dev) if (ret) goto err; + ret = drm_vblank_init(dev, dev->mode_config.num_crtc); + if (ret) { + DRM_ERROR("failed to initialize vblank: %d\n", ret); + goto err; + } + + priv->msi_enabled = 0; + ret = pci_enable_msi(dev->pdev); + if (ret) { + DRM_WARN("enabling MSI failed: %d\n", ret); + } else { + priv->msi_enabled = 1; + ret = drm_irq_install(dev, dev->pdev->irq); + if (ret) + DRM_WARN("install irq failed: %d\n", ret); + } + /* reset all the states of crtc/plane/encoder/connector */ drm_mode_config_reset(dev); diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h index b626caf47588..e195521eb41e 100644 --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h @@ -42,6 +42,7 @@ struct hibmc_drm_private { void __iomem *fb_map; unsigned long fb_base; unsigned long fb_size; + bool msi_enabled; /* drm */ struct drm_device *dev; |