diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_vga.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_vga.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_vga.c b/drivers/gpu/drm/nouveau/nouveau_vga.c index 81638d7f2ef..4f4c3fec691 100644 --- a/drivers/gpu/drm/nouveau/nouveau_vga.c +++ b/drivers/gpu/drm/nouveau/nouveau_vga.c @@ -14,7 +14,9 @@ nouveau_vga_set_decode(void *priv, bool state) { struct nouveau_device *device = nouveau_dev(priv); - if (device->chipset >= 0x40) + if (device->card_type == NV_40 && device->chipset >= 0x4c) + nv_wr32(device, 0x088060, state); + else if (device->chipset >= 0x40) nv_wr32(device, 0x088054, state); else nv_wr32(device, 0x001854, state); @@ -62,12 +64,13 @@ static bool nouveau_switcheroo_can_switch(struct pci_dev *pdev) { struct drm_device *dev = pci_get_drvdata(pdev); - bool can_switch; - spin_lock(&dev->count_lock); - can_switch = (dev->open_count == 0); - spin_unlock(&dev->count_lock); - return can_switch; + /* + * FIXME: open_count is protected by drm_global_mutex but that would lead to + * locking inversion with the driver load path. And the access here is + * completely racy anyway. So don't bother with locking for now. + */ + return dev->open_count == 0; } static const struct vga_switcheroo_client_ops @@ -82,6 +85,11 @@ nouveau_vga_init(struct nouveau_drm *drm) { struct drm_device *dev = drm->dev; bool runtime = false; + + /* only relevant for PCI devices */ + if (!dev->pdev) + return; + vga_client_register(dev->pdev, dev, NULL, nouveau_vga_set_decode); if (nouveau_runtime_pm == 1) |