gpu: nvgpu: Power up GPU in CDE only when converting

GPU does not need to powered up if user space calls kernel and there
is no new work to be done.

Bug 1623918

Change-Id: I531aa7033530ae652d13684d8f8568a0e05fc2e1
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/732748
(cherry picked from commit bc3657d611719384be37b8a8b0f80b7c8205ef51)
Reviewed-on: http://git-master/r/734274

diff --git a/drivers/gpu/nvgpu/gk20a/ctrl_gk20a.c b/drivers/gpu/nvgpu/gk20a/ctrl_gk20a.c
index 92eee151e2236d9a670eb288dcfc4e485ba69e58..6b6522f93ac7e5825dea6ea8652dda664dcf7f64 100644 (file)
--- a/drivers/gpu/nvgpu/gk20a/ctrl_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/ctrl_gk20a.c
@@ -89,17 +89,12 @@ static int gk20a_ctrl_prepare_compressible_read(
        fence.id = args->fence.syncpt_id;
        fence.value = args->fence.syncpt_value;
 
-       ret = gk20a_busy(g->dev);
-       if (ret)
-               return ret;
-
        ret = gk20a_prepare_compressible_read(g, args->handle,
                        args->request_compbits, args->offset,
                        args->compbits_hoffset, args->compbits_voffset,
                        args->width, args->height, args->block_height_log2,
                        flags, &fence, &args->valid_compbits,
                        &args->zbc_color, &fence_out);
-       gk20a_idle(g->dev);
 
        if (ret)
                return ret;