[PATCHv2 2/3] drm: removed drm_pcie_get_speed_cap_mask function

[Lucas Kannebley Tavares <lucaskt@linux.vnet.ibm.com>]

This function was moved to the pci subsystem where it fits better, as
this is much more of a generic pci task, than a drm specific one. All
references to the function (all in the radeon driver) are updated.

This is the second step in moving function drm_pcie_get_speed_cap_mask
from the drm subsystem to the pci one.

Signed-off-by: Lucas Kannebley Tavares <lucaskt@linux.vnet.ibm.com>
---
 drivers/gpu/drm/drm_pci.c          |   38 ------------------------------------
 drivers/gpu/drm/radeon/evergreen.c |    5 ++-
 drivers/gpu/drm/radeon/r600.c      |    5 ++-
 drivers/gpu/drm/radeon/rv770.c     |    5 ++-
 include/drm/drmP.h                 |    6 -----
 5 files changed, 9 insertions(+), 50 deletions(-)

diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c
index bd719e9..ba70844 100644
--- a/drivers/gpu/drm/drm_pci.c
+++ b/drivers/gpu/drm/drm_pci.c
@@ -439,44 +439,6 @@ int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver)
 	return 0;
 }
 
-int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *mask)
-{
-	struct pci_dev *root;
-	u32 lnkcap, lnkcap2;
-
-	*mask = 0;
-	if (!dev->pdev)
-		return -EINVAL;
-
-	root = dev->pdev->bus->self;
-
-	/* we've been informed via and serverworks don't make the cut */
-	if (root->vendor == PCI_VENDOR_ID_VIA ||
-	    root->vendor == PCI_VENDOR_ID_SERVERWORKS)
-		return -EINVAL;
-
-	pcie_capability_read_dword(root, PCI_EXP_LNKCAP, &lnkcap);
-	pcie_capability_read_dword(root, PCI_EXP_LNKCAP2, &lnkcap2);
-
-	if (lnkcap2) {	/* PCIe r3.0-compliant */
-		if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_2_5GB)
-			*mask |= DRM_PCIE_SPEED_25;
-		if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_5_0GB)
-			*mask |= DRM_PCIE_SPEED_50;
-		if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_8_0GB)
-			*mask |= DRM_PCIE_SPEED_80;
-	} else {	/* pre-r3.0 */
-		if (lnkcap & PCI_EXP_LNKCAP_SLS_2_5GB)
-			*mask |= DRM_PCIE_SPEED_25;
-		if (lnkcap & PCI_EXP_LNKCAP_SLS_5_0GB)
-			*mask |= (DRM_PCIE_SPEED_25 | DRM_PCIE_SPEED_50);
-	}
-
-	DRM_INFO("probing gen 2 caps for device %x:%x = %x/%x\n", root->vendor, root->device, lnkcap, lnkcap2);
-	return 0;
-}
-EXPORT_SYMBOL(drm_pcie_get_speed_cap_mask);
-
 #else
 
 int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver)
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 305a657..6ba204d 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -24,6 +24,7 @@
 #include <linux/firmware.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
+#include <linux/pci.h>
 #include <drm/drmP.h>
 #include "radeon.h"
 #include "radeon_asic.h"
@@ -3871,11 +3872,11 @@ void evergreen_pcie_gen2_enable(struct radeon_device *rdev)
 	if (ASIC_IS_X2(rdev))
 		return;
 
-	ret = drm_pcie_get_speed_cap_mask(rdev->ddev, &mask);
+	ret = pcie_get_speed_cap_mask(rdev->ddev->pdev, &mask);
 	if (ret != 0)
 		return;
 
-	if (!(mask & DRM_PCIE_SPEED_50))
+	if (!(mask & PCIE_SPEED_50))
 		return;
 
 	speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 0740db3..89a7387 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -30,6 +30,7 @@
 #include <linux/firmware.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
+#include <linux/pci.h>
 #include <drm/drmP.h>
 #include <drm/radeon_drm.h>
 #include "radeon.h"
@@ -4371,11 +4372,11 @@ static void r600_pcie_gen2_enable(struct radeon_device *rdev)
 	if (rdev->family <= CHIP_R600)
 		return;
 
-	ret = drm_pcie_get_speed_cap_mask(rdev->ddev, &mask);
+	ret = pcie_get_speed_cap_mask(rdev->ddev->pdev, &mask);
 	if (ret != 0)
 		return;
 
-	if (!(mask & DRM_PCIE_SPEED_50))
+	if (!(mask & PCIE_SPEED_50))
 		return;
 
 	speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index d63fe1d..81c7f1c 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -28,6 +28,7 @@
 #include <linux/firmware.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
+#include <linux/pci.h>
 #include <drm/drmP.h>
 #include "radeon.h"
 #include "radeon_asic.h"
@@ -1254,11 +1255,11 @@ static void rv770_pcie_gen2_enable(struct radeon_device *rdev)
 	if (ASIC_IS_X2(rdev))
 		return;
 
-	ret = drm_pcie_get_speed_cap_mask(rdev->ddev, &mask);
+	ret = pcie_get_speed_cap_mask(rdev->ddev->pdev, &mask);
 	if (ret != 0)
 		return;
 
-	if (!(mask & DRM_PCIE_SPEED_50))
+	if (!(mask & PCIE_SPEED_50))
 		return;
 
 	DRM_INFO("enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0\n");
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 2d94d74..39b2872 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1788,12 +1788,6 @@ extern int drm_get_pci_dev(struct pci_dev *pdev,
 			   const struct pci_device_id *ent,
 			   struct drm_driver *driver);
 
-#define DRM_PCIE_SPEED_25 1
-#define DRM_PCIE_SPEED_50 2
-#define DRM_PCIE_SPEED_80 4
-
-extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
-
 /* platform section */
 extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
 extern void drm_platform_exit(struct drm_driver *driver, struct platform_device *platform_device);
-- 
1.7.4.4