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/*
* Copyright (c) 2016, NVIDIA CORPORATION.
*
* SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <dm.h>
#include <misc.h>
#include <power-domain-uclass.h>
#include <asm/arch-tegra/bpmp_abi.h>
#define UPDATE BIT(0)
#define ON BIT(1)
static int tegra186_power_domain_request(struct power_domain *power_domain)
{
debug("%s(power_domain=%p) (dev=%p, id=%lu)\n", __func__,
power_domain, power_domain->dev, power_domain->id);
return 0;
}
static int tegra186_power_domain_free(struct power_domain *power_domain)
{
debug("%s(power_domain=%p) (dev=%p, id=%lu)\n", __func__,
power_domain, power_domain->dev, power_domain->id);
return 0;
}
static int tegra186_power_domain_common(struct power_domain *power_domain,
bool on)
{
struct mrq_pg_update_state_request req;
int on_state = on ? ON : 0;
int ret;
req.partition_id = power_domain->id;
req.logic_state = UPDATE | on_state;
req.sram_state = UPDATE | on_state;
/*
* Drivers manage their own clocks so they don't get out of sync, and
* since some power domains have many clocks, only a subset of which
* are actually needed depending on use-case.
*/
req.clock_state = UPDATE;
ret = misc_call(power_domain->dev->parent, MRQ_PG_UPDATE_STATE, &req,
sizeof(req), NULL, 0);
if (ret < 0)
return ret;
return 0;
}
static int tegra186_power_domain_on(struct power_domain *power_domain)
{
debug("%s(power_domain=%p) (dev=%p, id=%lu)\n", __func__,
power_domain, power_domain->dev, power_domain->id);
return tegra186_power_domain_common(power_domain, true);
}
static int tegra186_power_domain_off(struct power_domain *power_domain)
{
debug("%s(power_domain=%p) (dev=%p, id=%lu)\n", __func__,
power_domain, power_domain->dev, power_domain->id);
return tegra186_power_domain_common(power_domain, false);
}
struct power_domain_ops tegra186_power_domain_ops = {
.request = tegra186_power_domain_request,
.free = tegra186_power_domain_free,
.on = tegra186_power_domain_on,
.off = tegra186_power_domain_off,
};
static int tegra186_power_domain_probe(struct udevice *dev)
{
debug("%s(dev=%p)\n", __func__, dev);
return 0;
}
U_BOOT_DRIVER(tegra186_power_domain) = {
.name = "tegra186_power_domain",
.id = UCLASS_POWER_DOMAIN,
.probe = tegra186_power_domain_probe,
.ops = &tegra186_power_domain_ops,
};
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