drm/etnaviv: better track GPU state

Instead of only tracking if the FE is running, use a enum to better
describe the various states the GPU can be in. This allows some
additional validation to make sure that functions that expect a
certain GPU state are only called when the GPU is actually in that
state.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
index e1e1de59c38d..b4e545dce947 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
@@ -95,6 +95,14 @@ struct clk;
 
 #define ETNA_NR_EVENTS 30
 
+enum etnaviv_gpu_state {
+	ETNA_GPU_STATE_UNKNOWN = 0,
+	ETNA_GPU_STATE_IDENTIFIED,
+	ETNA_GPU_STATE_RESET,
+	ETNA_GPU_STATE_INITIALIZED,
+	ETNA_GPU_STATE_RUNNING,
+};
+
 struct etnaviv_gpu {
 	struct drm_device *drm;
 	struct thermal_cooling_device *cooling;
@@ -105,8 +113,8 @@ struct etnaviv_gpu {
 	struct workqueue_struct *wq;
 	struct mutex sched_lock;
 	struct drm_gpu_scheduler sched;
+	enum etnaviv_gpu_state state;
 	bool initialized;
-	bool fe_running;
 
 	/* 'ring'-buffer: */
 	struct etnaviv_cmdbuf buffer;