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/*
* Tegra Virtualized GPU Platform Interface
*
* Copyright (c) 2014-2018, 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <nvgpu/nvhost.h>
#include <nvgpu/gk20a.h>
#include "os/linux/platform_gk20a.h"
#include "vgpu/clk_vgpu.h"
#include "vgpu_linux.h"
static int gk20a_tegra_probe(struct device *dev)
{
#ifdef CONFIG_TEGRA_GK20A_NVHOST
struct gk20a_platform *platform = dev_get_drvdata(dev);
int ret;
ret = nvgpu_get_nvhost_dev(platform->g);
if (ret)
return ret;
vgpu_init_clk_support(platform->g);
return 0;
#else
return 0;
#endif
}
long vgpu_plat_clk_round_rate(struct device *dev, unsigned long rate)
{
/* server will handle frequency rounding */
return rate;
}
int vgpu_plat_clk_get_freqs(struct device *dev, unsigned long **freqs,
int *num_freqs)
{
struct gk20a_platform *platform = gk20a_get_platform(dev);
struct gk20a *g = platform->g;
return vgpu_clk_get_freqs(g, freqs, num_freqs);
}
int vgpu_plat_clk_cap_rate(struct device *dev, unsigned long rate)
{
struct gk20a_platform *platform = gk20a_get_platform(dev);
struct gk20a *g = platform->g;
return vgpu_clk_cap_rate(g, rate);
}
struct gk20a_platform vgpu_tegra_platform = {
.has_syncpoints = true,
.aggressive_sync_destroy_thresh = 64,
/* power management configuration */
.can_railgate_init = false,
.can_elpg_init = false,
.enable_slcg = false,
.enable_blcg = false,
.enable_elcg = false,
.enable_elpg = false,
.enable_aelpg = false,
.can_slcg = false,
.can_blcg = false,
.can_elcg = false,
.ch_wdt_timeout_ms = 5000,
.probe = gk20a_tegra_probe,
.clk_round_rate = vgpu_plat_clk_round_rate,
.get_clk_freqs = vgpu_plat_clk_get_freqs,
/* frequency scaling configuration */
.devfreq_governor = "userspace",
.virtual_dev = true,
/* power management callbacks */
.suspend = vgpu_tegra_suspend,
.resume = vgpu_tegra_resume,
};
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