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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright (c) 2016, NVIDIA CORPORATION.
- */
- #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,
- .rfree = 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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