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| author |   Alex Deucher <alexander.deucher@amd.com> | 2013-03-25 18:28:29 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-06-27 19:16:40 -0400 |
| commit | 4bd9f516f622b883b35cda8fb38b95f3a493fc17 (patch) | |
| tree | 76fe8ddc8d59a9fc4b67afe9c128be7fd575d0ba /drivers/gpu/drm/radeon/r600_dpm.c | |
| parent | drm/radeon: update radeon_atombios_get_default_voltages for mvdd (diff) | |
| download | linux-dev-4bd9f516f622b883b35cda8fb38b95f3a493fc17.tar.xz linux-dev-4bd9f516f622b883b35cda8fb38b95f3a493fc17.zip | |
drm/radeon/dpm: add pcie gen helper function
Add a helper function to determine the preferred
pcie gen based on the card, system, and circumstance.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/r600_dpm.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r600_dpm.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r600_dpm.c b/drivers/gpu/drm/radeon/r600_dpm.c index 2e5ec65a78f7..28177da694f2 100644 --- a/drivers/gpu/drm/radeon/r600_dpm.c +++ b/drivers/gpu/drm/radeon/r600_dpm.c @@ -997,3 +997,26 @@ void r600_free_extended_power_table(struct radeon_device *rdev) if (rdev->pm.dpm.dyn_state.ppm_table) kfree(rdev->pm.dpm.dyn_state.ppm_table); } + +enum radeon_pcie_gen r600_get_pcie_gen_support(struct radeon_device *rdev, + u32 sys_mask, + enum radeon_pcie_gen asic_gen, + enum radeon_pcie_gen default_gen) +{ + switch (asic_gen) { + case RADEON_PCIE_GEN1: + return RADEON_PCIE_GEN1; + case RADEON_PCIE_GEN2: + return RADEON_PCIE_GEN2; + case RADEON_PCIE_GEN3: + return RADEON_PCIE_GEN3; + default: + if ((sys_mask & DRM_PCIE_SPEED_80) && (default_gen == RADEON_PCIE_GEN3)) + return RADEON_PCIE_GEN3; + else if ((sys_mask & DRM_PCIE_SPEED_50) && (default_gen == RADEON_PCIE_GEN2)) + return RADEON_PCIE_GEN2; + else + return RADEON_PCIE_GEN1; + } + return RADEON_PCIE_GEN1; +} |