[PATCH 10/10] drm/etnaviv: add readout param

[Christian Gmeiner]

We need this for perf counters.

Signed-off-by: Christian Gmeiner <christian.gmeiner at gmail.com>
---
 drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 4 ++++
 include/uapi/drm/etnaviv_drm.h        | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index b22212c..b3eba08 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -122,6 +122,10 @@ int etnaviv_gpu_get_param(struct etnaviv_gpu *gpu, u32 param, u64 *value)
 		*value = gpu->identity.varyings_count;
 		break;
 
+	case ETNAVIV_PARAM_READOUT:
+		*value = 1;
+		break;
+
 	default:
 		DBG("%s: invalid param: %u", dev_name(gpu->dev), param);
 		return -EINVAL;
diff --git a/include/uapi/drm/etnaviv_drm.h b/include/uapi/drm/etnaviv_drm.h
index f2e24bb..cc4d076 100644
--- a/include/uapi/drm/etnaviv_drm.h
+++ b/include/uapi/drm/etnaviv_drm.h
@@ -67,6 +67,8 @@ struct drm_etnaviv_timespec {
 #define ETNAVIV_PARAM_GPU_NUM_CONSTANTS             0x19
 #define ETNAVIV_PARAM_GPU_NUM_VARYINGS              0x1a
 
+#define ETNAVIV_PARAM_READOUT                       0x20
+
 #define ETNA_MAX_PIPES 4
 
 struct drm_etnaviv_param {
-- 
2.9.3