81 lines
2.5 KiB
C
81 lines
2.5 KiB
C
/*
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* Copyright (c) 2022 Intel Corporation.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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#include <zephyr/pm/device.h>
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#include <zephyr/pm/device_runtime.h>
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#include <logging/log.h>
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LOG_MODULE_REGISTER(power_domain_intel_adsp, LOG_LEVEL_INF);
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#define PWRCTL_OFFSET 0xD0
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#define PWRSTS_OFFSET 0xD2
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struct pg_registers {
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uint32_t wr_address;
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uint32_t rd_address;
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uint32_t SPA_bit;
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uint32_t CPA_bit;
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};
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static int pd_intel_adsp_set_power_enable(struct pg_registers *reg, bool power_enable)
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{
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uint32_t SPA_bit_mask = BIT(reg->SPA_bit);
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if (power_enable) {
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sys_write32(sys_read32(reg->wr_address) | SPA_bit_mask, reg->wr_address);
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} else {
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sys_write32(sys_read32(reg->wr_address) & ~(SPA_bit_mask), reg->wr_address);
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}
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return 0;
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}
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static int pd_intel_adsp_pm_action(const struct device *dev, enum pm_device_action action)
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{
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struct pg_registers *reg_data = (struct pg_registers *)dev->data;
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switch (action) {
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case PM_DEVICE_ACTION_RESUME:
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pm_device_children_action_run(dev, PM_DEVICE_ACTION_TURN_ON, NULL);
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pd_intel_adsp_set_power_enable(reg_data, true);
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break;
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case PM_DEVICE_ACTION_SUSPEND:
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pm_device_children_action_run(dev, PM_DEVICE_ACTION_TURN_OFF, NULL);
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pd_intel_adsp_set_power_enable(reg_data, false);
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break;
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case PM_DEVICE_ACTION_TURN_ON:
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break;
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case PM_DEVICE_ACTION_TURN_OFF:
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break;
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default:
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return -ENOTSUP;
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}
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return 0;
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}
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static int pd_intel_adsp_init(const struct device *dev)
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{
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pm_device_init_suspended(dev);
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pm_device_runtime_enable(dev);
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return 0;
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}
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#define DT_DRV_COMPAT intel_adsp_power_domain
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#define POWER_DOMAIN_DEVICE(id) \
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static struct pg_registers pd_pg_reg##id = { \
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.wr_address = DT_REG_ADDR(DT_PHANDLE(DT_DRV_INST(id), lps)) + PWRCTL_OFFSET, \
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.rd_address = DT_REG_ADDR(DT_PHANDLE(DT_DRV_INST(id), lps)) + PWRSTS_OFFSET, \
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.SPA_bit = DT_INST_PROP(id, bit_position), \
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.CPA_bit = DT_INST_PROP(id, bit_position), \
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}; \
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PM_DEVICE_DT_INST_DEFINE(id, pd_intel_adsp_pm_action); \
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DEVICE_DT_INST_DEFINE(id, pd_intel_adsp_init, PM_DEVICE_DT_INST_GET(id), \
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&pd_pg_reg##id, NULL, POST_KERNEL, 75, NULL);
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DT_INST_FOREACH_STATUS_OKAY(POWER_DOMAIN_DEVICE)
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