mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
synced 2025-12-22 17:36:20 +03:00
f871b52fd3
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 <skadle@nvidia.com> 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 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/*
|
|
* Tegra Virtualized GPU Platform Interface
|
|
*
|
|
* Copyright (c) 2014-2017, 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.
|
|
*/
|
|
|
|
#include <linux/of_platform.h>
|
|
|
|
#include "gk20a.h"
|
|
#include "hal_gk20a.h"
|
|
#include "platform_gk20a.h"
|
|
#include "vgpu/clk_vgpu.h"
|
|
|
|
static int gk20a_tegra_probe(struct device *dev)
|
|
{
|
|
struct gk20a_platform *platform = dev_get_drvdata(dev);
|
|
struct device_node *np = dev->of_node;
|
|
const __be32 *host1x_ptr;
|
|
struct platform_device *host1x_pdev = NULL;
|
|
|
|
host1x_ptr = of_get_property(np, "nvidia,host1x", NULL);
|
|
if (host1x_ptr) {
|
|
struct device_node *host1x_node =
|
|
of_find_node_by_phandle(be32_to_cpup(host1x_ptr));
|
|
|
|
host1x_pdev = of_find_device_by_node(host1x_node);
|
|
if (!host1x_pdev) {
|
|
dev_warn(dev, "host1x device not available");
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
} else {
|
|
host1x_pdev = to_platform_device(dev->parent);
|
|
dev_warn(dev, "host1x reference not found. assuming host1x to be parent");
|
|
}
|
|
|
|
platform->g->host1x_dev = host1x_pdev;
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct gk20a_platform vgpu_tegra_platform = {
|
|
.has_syncpoints = true,
|
|
.aggressive_sync_destroy_thresh = 64,
|
|
|
|
/* power management configuration */
|
|
.can_railgate = false,
|
|
.can_elpg = false,
|
|
.enable_slcg = false,
|
|
.enable_blcg = false,
|
|
.enable_elcg = false,
|
|
.enable_elpg = false,
|
|
.enable_aelpg = false,
|
|
|
|
.ch_wdt_timeout_ms = 5000,
|
|
|
|
.probe = gk20a_tegra_probe,
|
|
.default_big_page_size = SZ_128K,
|
|
|
|
.clk_get_rate = vgpu_clk_get_rate,
|
|
.clk_round_rate = vgpu_clk_round_rate,
|
|
.clk_set_rate = vgpu_clk_set_rate,
|
|
.get_clk_freqs = vgpu_clk_get_freqs,
|
|
|
|
/* frequency scaling configuration */
|
|
.devfreq_governor = "userspace",
|
|
|
|
.virtual_dev = true,
|
|
};
|