[Nouveau] [PATCH v4 2/4] pci: add nvkm_pcie_get_speed

[Karol Herbst]

v2: fixed compilation error

Signed-off-by: Karol Herbst <kherbst at redhat.com>
Reviewed-by: Lyude Paul <lyude at redhat.com>
---
 drm/nouveau/include/nvkm/subdev/pci.h | 1 +
 drm/nouveau/nvkm/subdev/pci/pcie.c    | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/drm/nouveau/include/nvkm/subdev/pci.h b/drm/nouveau/include/nvkm/subdev/pci.h
index 4803a4fad..b29101e48 100644
--- a/drm/nouveau/include/nvkm/subdev/pci.h
+++ b/drm/nouveau/include/nvkm/subdev/pci.h
@@ -53,4 +53,5 @@ int gp100_pci_new(struct nvkm_device *, int, struct nvkm_pci **);
 
 /* pcie functions */
 int nvkm_pcie_set_link(struct nvkm_pci *, enum nvkm_pcie_speed, u8 width);
+enum nvkm_pcie_speed nvkm_pcie_get_speed(struct nvkm_pci *);
 #endif
diff --git a/drm/nouveau/nvkm/subdev/pci/pcie.c b/drm/nouveau/nvkm/subdev/pci/pcie.c
index 354ac4c85..b4203ff1a 100644
--- a/drm/nouveau/nvkm/subdev/pci/pcie.c
+++ b/drm/nouveau/nvkm/subdev/pci/pcie.c
@@ -177,3 +177,11 @@ nvkm_pcie_set_link(struct nvkm_pci *pci, enum nvkm_pcie_speed speed, u8 width)
 
 	return ret;
 }
+
+enum nvkm_pcie_speed
+nvkm_pcie_get_speed(struct nvkm_pci *pci)
+{
+	if (!pci || !pci_is_pcie(pci->pdev) || !pci->func->pcie.cur_speed)
+		return -ENODEV;
+	return pci->func->pcie.cur_speed(pci);
+}
-- 
2.21.0