drm/radeon: add get_allowed_info_register for EG/BTC

[cascardo/linux.git] / drivers / gpu / drm / radeon / evergreen.c

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 973df06..21cbd2e 100644 (file)
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -1006,6 +1006,34 @@ static void evergreen_init_golden_registers(struct radeon_device *rdev)
        }
 }
 
+/**
+ * evergreen_get_allowed_info_register - fetch the register for the info ioctl
+ *
+ * @rdev: radeon_device pointer
+ * @reg: register offset in bytes
+ * @val: register value
+ *
+ * Returns 0 for success or -EINVAL for an invalid register
+ *
+ */
+int evergreen_get_allowed_info_register(struct radeon_device *rdev,
+                                       u32 reg, u32 *val)
+{
+       switch (reg) {
+       case GRBM_STATUS:
+       case GRBM_STATUS_SE0:
+       case GRBM_STATUS_SE1:
+       case SRBM_STATUS:
+       case SRBM_STATUS2:
+       case DMA_STATUS_REG:
+       case UVD_STATUS:
+               *val = RREG32(reg);
+               return 0;
+       default:
+               return -EINVAL;
+       }
+}
+
 void evergreen_tiling_fields(unsigned tiling_flags, unsigned *bankw,
                             unsigned *bankh, unsigned *mtaspect,
                             unsigned *tile_split)