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path: root/drivers/gpu/drm/radeon/radeon_kms.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_kms.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_kms.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index 4057ebf..68a7b22 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -205,6 +205,17 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
/* return clock value in KHz */
value = rdev->clock.spll.reference_freq * 10;
break;
+ case RADEON_INFO_NUM_BACKENDS:
+ if (rdev->family >= CHIP_CEDAR)
+ value = rdev->config.evergreen.max_backends;
+ else if (rdev->family >= CHIP_RV770)
+ value = rdev->config.rv770.max_backends;
+ else if (rdev->family >= CHIP_R600)
+ value = rdev->config.r600.max_backends;
+ else {
+ return -EINVAL;
+ }
+ break;
default:
DRM_DEBUG_KMS("Invalid request %d\n", info->request);
return -EINVAL;