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drm/radeon/kms: bail on BTC parts if MC ucode is missing 

We already do this for cayman, need to also do it for
BTC parts.  The default memory and voltage setup is not
adequate for advanced operation.  Continuing will
result in an unusable display.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@kernel.org
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2011-12-21 11:58:17 -05:00 committed by Dave Airlie
parent b9e26dfdad
commit 77e00f2ea9
1 changed files with 12 additions and 0 deletions
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12
drivers/gpu/drm/radeon/evergreen.c
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@ -3276,6 +3276,18 @@ int evergreen_init(struct radeon_device *rdev)
rdev->accel_working = false;
}
}
/* Don't start up if the MC ucode is missing on BTC parts.
* The default clocks and voltages before the MC ucode
* is loaded are not suffient for advanced operations.
*/
if (ASIC_IS_DCE5(rdev)) {
if (!rdev->mc_fw && !(rdev->flags & RADEON_IS_IGP)) {
DRM_ERROR("radeon: MC ucode required for NI+.\n");
return -EINVAL;
}
}
return 0;
}