remove the framebuffer initialized by fireware/bootloader,which will use
hibmc's pcie resource, and may cause conflict.
Signed-off-by: Tian Tao <tiantao6@xxxxxxxxxxxxx>
Signed-off-by: Gong junjie <gongjunjie2@xxxxxxxxxx>
---
drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
index 5f612f6..7ebe831 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
@@ -47,6 +47,22 @@ static irqreturn_t hibmc_drm_interrupt(int irq, void *arg)
return IRQ_HANDLED;
}
+static void hibmc_remove_framebuffers(struct pci_dev *pdev)
+{
+ struct apertures_struct *ap;
+
+ ap = alloc_apertures(1);
+ if (!ap)
+ return;
+
+ ap->ranges[0].base = pci_resource_start(pdev, 0);
+ ap->ranges[0].size = pci_resource_len(pdev, 0);
+
+ drm_fb_helper_remove_conflicting_framebuffers(ap, "hibmcdrmfb", false);
+
+ kfree(ap);
+}
+
static struct drm_driver hibmc_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
.fops = &hibmc_fops,
@@ -327,6 +343,8 @@ static int hibmc_pci_probe(struct pci_dev *pdev,
struct drm_device *dev;
int ret;
+ hibmc_remove_framebuffers(pdev);
+
dev = drm_dev_alloc(&hibmc_driver, &pdev->dev);
if (IS_ERR(dev)) {
DRM_ERROR("failed to allocate drm_device\n");
--
2.7.4
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