[PATCH v5 8/9] drm/hisilicon/hibmc: Add vblank interruput
Rongrong Zou
zourongrong at gmail.com
Tue Oct 25 19:37:05 PDT 2016
Add vblank interrupt.
Signed-off-by: Rongrong Zou <zourongrong at gmail.com>
---
drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 47 ++++++++++++++++++++++++-
1 file changed, 46 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index 9e7f277..ee7f0d8 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -40,16 +40,46 @@
static int hibmc_enable_vblank(struct drm_device *dev, unsigned int pipe)
{
+ struct hibmc_drm_device *hidev =
+ (struct hibmc_drm_device *)dev->dev_private;
+
+ writel(HIBMC_RAW_INTERRUPT_EN_VBLANK(1),
+ hidev->mmio + HIBMC_RAW_INTERRUPT_EN);
+
return 0;
}
static void hibmc_disable_vblank(struct drm_device *dev, unsigned int pipe)
{
+ struct hibmc_drm_device *hidev =
+ (struct hibmc_drm_device *)dev->dev_private;
+
+ writel(HIBMC_RAW_INTERRUPT_EN_VBLANK(0),
+ hidev->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_device *hidev =
+ (struct hibmc_drm_device *)dev->dev_private;
+ struct drm_crtc *crtc = &hidev->crtc;
+ u32 status;
+
+ status = readl(hidev->mmio + HIBMC_RAW_INTERRUPT);
+
+ if (status & HIBMC_RAW_INTERRUPT_VBLANK(1)) {
+ writel(HIBMC_RAW_INTERRUPT_VBLANK(1),
+ hidev->mmio + HIBMC_RAW_INTERRUPT);
+ drm_crtc_handle_vblank(crtc);
+ }
+
+ 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",
@@ -63,6 +93,7 @@ static void hibmc_disable_vblank(struct drm_device *dev, unsigned int pipe)
.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)
@@ -272,6 +303,20 @@ static int hibmc_load(struct drm_device *dev, unsigned long flags)
if (ret)
goto err;
+ ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
+ if (ret) {
+ DRM_ERROR("failed to initialize vblank.\n");
+ goto err;
+ }
+
+ if (pci_enable_msi(dev->pdev)) {
+ DRM_ERROR("Enabling MSI failed!\n");
+ } else {
+ ret = drm_irq_install(dev, dev->pdev->irq);
+ if (ret)
+ DRM_ERROR("install irq failed , ret = %d\n", ret);
+ }
+
/* reset all the states of crtc/plane/encoder/connector */
drm_mode_config_reset(dev);
--
1.9.1
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