/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2020 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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*/
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#include <sbi/sbi_error.h>
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#include <sbi_utils/fdt/fdt_helper.h>
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#include <sbi_utils/timer/fdt_timer.h>
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#include <sbi_utils/sys/clint.h>
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#define CLINT_TIMER_MAX_NR 16
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static unsigned long clint_timer_count = 0;
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static struct clint_data clint_timer[CLINT_TIMER_MAX_NR];
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static int timer_clint_cold_init(void *fdt, int nodeoff,
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const struct fdt_match *match)
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{
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int rc;
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struct clint_data *ct, *ctmaster = NULL;
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if (CLINT_TIMER_MAX_NR <= clint_timer_count)
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return SBI_ENOSPC;
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ct = &clint_timer[clint_timer_count++];
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if (1 < clint_timer_count)
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ctmaster = &clint_timer[0];
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rc = fdt_parse_clint_node(fdt, nodeoff, TRUE, ct);
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if (rc)
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return rc;
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return clint_cold_timer_init(ct, ctmaster);
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}
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static const struct fdt_match timer_clint_match[] = {
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{ .compatible = "riscv,clint0" },
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{ },
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};
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struct fdt_timer fdt_timer_clint = {
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.match_table = timer_clint_match,
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.cold_init = timer_clint_cold_init,
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.warm_init = clint_warm_timer_init,
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.exit = NULL,
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.value = clint_timer_value,
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.event_stop = clint_timer_event_stop,
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.event_start = clint_timer_event_start,
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};
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