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radeon: use max_bus_speed to activate gen2 speeds

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radeon currently uses a drm function to get the speed capabilities for
the bus, drm_pcie_get_speed_cap_mask. However, this is a non-standard
method of performing this detection and this patch changes it to use
the max_bus_speed attribute.

From: Lucas Kannebley Tavares <lucaskt@linux.vnet.ibm.com>
Signed-off-by: Kleber Sacilotto de Souza <klebers@linux.vnet.ibm.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Kleber Sacilotto de Souza 2013-05-03 19:43:13 -03:00 committed by Alex Deucher
parent 50a583f64b
commit 7e0e419637
3 changed files with 7 additions and 21 deletions
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10
drivers/gpu/drm/radeon/evergreen.c
View file

@ -4999,8 +4999,7 @@ void evergreen_fini(struct radeon_device *rdev)
void evergreen_pcie_gen2_enable(struct radeon_device *rdev)
{
u32 link_width_cntl, speed_cntl, mask;
int ret;
u32 link_width_cntl, speed_cntl;
if (radeon_pcie_gen2 == 0)
return;
@ -5015,11 +5014,8 @@ 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);
if (ret != 0)
return;
if (!(mask & DRM_PCIE_SPEED_50))
if ((rdev->pdev->bus->max_bus_speed != PCIE_SPEED_5_0GT) &&
(rdev->pdev->bus->max_bus_speed != PCIE_SPEED_8_0GT))
return;
speed_cntl = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL);

9
drivers/gpu/drm/radeon/r600.c
View file

@ -4631,8 +4631,6 @@ static void r600_pcie_gen2_enable(struct radeon_device *rdev)
{
u32 link_width_cntl, lanes, speed_cntl, training_cntl, tmp;
u16 link_cntl2;
u32 mask;
int ret;
if (radeon_pcie_gen2 == 0)
return;
@ -4651,11 +4649,8 @@ 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);
if (ret != 0)
return;
if (!(mask & DRM_PCIE_SPEED_50))
if ((rdev->pdev->bus->max_bus_speed != PCIE_SPEED_5_0GT) &&
(rdev->pdev->bus->max_bus_speed != PCIE_SPEED_8_0GT))
return;
speed_cntl = RREG32_PCIE_PORT(PCIE_LC_SPEED_CNTL);

9
drivers/gpu/drm/radeon/rv770.c
View file

@ -2111,8 +2111,6 @@ static void rv770_pcie_gen2_enable(struct radeon_device *rdev)
{
u32 link_width_cntl, lanes, speed_cntl, tmp;
u16 link_cntl2;
u32 mask;
int ret;
if (radeon_pcie_gen2 == 0)
return;
@ -2127,11 +2125,8 @@ 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);
if (ret != 0)
return;
if (!(mask & DRM_PCIE_SPEED_50))
if ((rdev->pdev->bus->max_bus_speed != PCIE_SPEED_5_0GT) &&
(rdev->pdev->bus->max_bus_speed != PCIE_SPEED_8_0GT))
return;
DRM_INFO("enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0\n");