Messages in this thread Patch in this message | | | Date | Tue, 03 Jan 2012 14:33:20 -0800 | From | Greg KH <> | Subject | [47/75] drm/radeon/kms: bail on BTC parts if MC ucode is missing |
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3.1-stable review patch. If anyone has any objections, please let me know.
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From: Alex Deucher <alexander.deucher@amd.com>
commit 77e00f2ea94abee1ad13bdfde19cf7aa25992b0e upstream.
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: Jean Delvare <khali@linux-fr.org> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/gpu/drm/radeon/evergreen.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
--- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -3258,6 +3258,18 @@ int evergreen_init(struct radeon_device 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; }
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