drm/panfrost: Add missing GPU feature registers

Three feature registers were declared but never actually read from the
GPU. Add THREAD_MAX_THREADS, THREAD_MAX_WORKGROUP_SIZE and
THREAD_MAX_BARRIER_SIZE so that the complete set are available.

Fixes: 4bced8bea094 ("drm/panfrost: Export all GPU feature registers")
Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191014151515.13839-1-steven.price@arm.com

diff --git a/drivers/gpu/drm/panfrost/panfrost_gpu.c b/drivers/gpu/drm/panfrost/panfrost_gpu.c
index f67ed92..8822ec1 100644 (file)
--- a/drivers/gpu/drm/panfrost/panfrost_gpu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_gpu.c
@@ -208,6 +208,9 @@ static void panfrost_gpu_init_features(struct panfrost_device *pfdev)
        pfdev->features.mem_features = gpu_read(pfdev, GPU_MEM_FEATURES);
        pfdev->features.mmu_features = gpu_read(pfdev, GPU_MMU_FEATURES);
        pfdev->features.thread_features = gpu_read(pfdev, GPU_THREAD_FEATURES);
+       pfdev->features.max_threads = gpu_read(pfdev, GPU_THREAD_MAX_THREADS);
+       pfdev->features.thread_max_workgroup_sz = gpu_read(pfdev, GPU_THREAD_MAX_WORKGROUP_SIZE);
+       pfdev->features.thread_max_barrier_sz = gpu_read(pfdev, GPU_THREAD_MAX_BARRIER_SIZE);
        pfdev->features.coherency_features = gpu_read(pfdev, GPU_COHERENCY_FEATURES);
        for (i = 0; i < 4; i++)
                pfdev->features.texture_features[i] = gpu_read(pfdev, GPU_TEXTURE_FEATURES(i));