From b3a7c2b305ec6f895dc236f0c5f163bd4cbeb248 Mon Sep 17 00:00:00 2001 From: Sachit Kadle Date: Tue, 24 Jan 2017 10:22:13 -0800 Subject: gpu: nvgpu: vgpu: add devfreq support Add devfreq governor support in order to allow frequency scaling in virtualization config. GPU clock frequency operations are re-directed to the server over RPC. Bug 200237433 Change-Id: I1c8e565a4fff36d3456dc72ebb20795b7822650e Signed-off-by: Sachit Kadle Reviewed-on: http://git-master/r/1295542 (cherry picked from commit d5c956fc06697eda3829c67cb22987e538213b29) Reviewed-on: http://git-master/r/1280968 (cherry picked from commit 25e2b3cf7cb5559a6849c0024d42c157564a9be2) Reviewed-on: http://git-master/r/1321835 (cherry picked from commit f871b52fd3f553d6b6375a3c848fbca272ed8e29) Reviewed-on: http://git-master/r/1313468 Tested-by: Aparna Das Reviewed-by: Terje Bergstrom Reviewed-by: Richard Zhao GVS: Gerrit_Virtual_Submit --- drivers/gpu/nvgpu/vgpu/clk_vgpu.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 drivers/gpu/nvgpu/vgpu/clk_vgpu.h (limited to 'drivers/gpu/nvgpu/vgpu/clk_vgpu.h') diff --git a/drivers/gpu/nvgpu/vgpu/clk_vgpu.h b/drivers/gpu/nvgpu/vgpu/clk_vgpu.h new file mode 100644 index 00000000..a90b63d8 --- /dev/null +++ b/drivers/gpu/nvgpu/vgpu/clk_vgpu.h @@ -0,0 +1,23 @@ +/* + * Virtualized GPU Clock Interface + * + * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + */ + +#ifndef _CLK_VIRT_H_ +#define _CLK_VIRT_H_ + +void vgpu_init_clk_support(struct gk20a *g); +long vgpu_clk_round_rate(struct device *dev, unsigned long rate); +int vgpu_clk_get_freqs(struct device *dev, + unsigned long **freqs, int *num_freqs); +#endif -- cgit v1.2.2