drm/etnaviv: Warn when probing on NPUs

Userspace is still not making full use of the hardware, so we don't know
yet if changes to the UAPI won't be needed. Warn about it.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index 51320eeebfcff304e0d16f776a0895c30c9a82af..a639cc971e2e250e8e3a105c55c5f4105c4c238d 100644 (file)
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -773,6 +773,10 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
                goto fail;
        }
 
+       if (gpu->identity.nn_core_count > 0)
+               dev_warn(gpu->dev, "etnaviv has been instantiated on a NPU, "
+                                   "for which the UAPI is still experimental\n");
+
        /* Exclude VG cores with FE2.0 */
        if (gpu->identity.features & chipFeatures_PIPE_VG &&
            gpu->identity.features & chipFeatures_FE20) {