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drm/radeon/dpm: require rlc for dpm

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The rlc is required for dpm to work properly, so if
the rlc ucode is missing, don't enable dpm.  Enabling
dpm without the rlc enabled can result in hangs.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2013-08-06 13:34:00 -04:00
parent f61d5b4677
commit 761bfb9998
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/radeon/radeon_pm.c
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@ -1176,7 +1176,10 @@ int radeon_pm_init(struct radeon_device *rdev)
case CHIP_VERDE:
case CHIP_OLAND:
case CHIP_HAINAN:
if (radeon_dpm == 1)
/* DPM requires the RLC */
if (!rdev->rlc_fw)
rdev->pm.pm_method = PM_METHOD_PROFILE;
else if (radeon_dpm == 1)
rdev->pm.pm_method = PM_METHOD_DPM;
else
rdev->pm.pm_method = PM_METHOD_PROFILE;