74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
/*
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* Copyright (c) 2018 Foundries.io
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define DT_DRV_COMPAT openisa_rv32m1_pcc
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#include <errno.h>
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#include <soc.h>
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#include <zephyr/drivers/clock_control.h>
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#include <fsl_clock.h>
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#define LOG_LEVEL CONFIG_CLOCK_CONTROL_LOG_LEVEL
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#include <zephyr/logging/log.h>
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LOG_MODULE_REGISTER(clock_control);
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struct rv32m1_pcc_config {
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uint32_t base_address;
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};
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#define DEV_BASE(dev) \
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(((struct rv32m1_pcc_config *)(dev->config))->base_address)
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static inline clock_ip_name_t clock_ip(const struct device *dev,
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clock_control_subsys_t sub_system)
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{
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uint32_t offset = POINTER_TO_UINT(sub_system);
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return MAKE_PCC_REGADDR(DEV_BASE(dev), offset);
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}
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static int rv32m1_pcc_on(const struct device *dev,
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clock_control_subsys_t sub_system)
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{
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CLOCK_EnableClock(clock_ip(dev, sub_system));
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return 0;
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}
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static int rv32m1_pcc_off(const struct device *dev,
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clock_control_subsys_t sub_system)
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{
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CLOCK_DisableClock(clock_ip(dev, sub_system));
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return 0;
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}
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static int rv32m1_pcc_get_rate(const struct device *dev,
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clock_control_subsys_t sub_system,
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uint32_t *rate)
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{
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*rate = CLOCK_GetIpFreq(clock_ip(dev, sub_system));
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return 0;
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}
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static const struct clock_control_driver_api rv32m1_pcc_api = {
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.on = rv32m1_pcc_on,
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.off = rv32m1_pcc_off,
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.get_rate = rv32m1_pcc_get_rate,
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};
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#define RV32M1_PCC_INIT(inst) \
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static const struct rv32m1_pcc_config rv32m1_pcc##inst##_config = { \
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.base_address = DT_INST_REG_ADDR(inst) \
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}; \
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\
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DEVICE_DT_INST_DEFINE(inst, \
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NULL, \
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NULL, \
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NULL, &rv32m1_pcc##inst##_config, \
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PRE_KERNEL_1, \
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CONFIG_CLOCK_CONTROL_INIT_PRIORITY, \
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&rv32m1_pcc_api);
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DT_INST_FOREACH_STATUS_OKAY(RV32M1_PCC_INIT)
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