forked from Mirrors/opensbi
559a8f1d3b
Instead of having timer_value(), timer_event_start(), and timer_event_stop() callbacks in platform operations, it will be much simpler for timer driver to directly register these operations as device to the sbi_timer implementation. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
/*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2020 Western Digital Corporation or its affiliates.
|
|
*
|
|
* Authors:
|
|
* Anup Patel <anup.patel@wdc.com>
|
|
*/
|
|
|
|
#include <sbi/sbi_error.h>
|
|
#include <sbi_utils/fdt/fdt_helper.h>
|
|
#include <sbi_utils/timer/fdt_timer.h>
|
|
#include <sbi_utils/sys/clint.h>
|
|
|
|
#define CLINT_TIMER_MAX_NR 16
|
|
|
|
static unsigned long clint_timer_count = 0;
|
|
static struct clint_data clint_timer[CLINT_TIMER_MAX_NR];
|
|
|
|
static int timer_clint_cold_init(void *fdt, int nodeoff,
|
|
const struct fdt_match *match)
|
|
{
|
|
int rc;
|
|
struct clint_data *ct, *ctmaster = NULL;
|
|
|
|
if (CLINT_TIMER_MAX_NR <= clint_timer_count)
|
|
return SBI_ENOSPC;
|
|
ct = &clint_timer[clint_timer_count++];
|
|
if (1 < clint_timer_count)
|
|
ctmaster = &clint_timer[0];
|
|
|
|
rc = fdt_parse_clint_node(fdt, nodeoff, TRUE, ct);
|
|
if (rc)
|
|
return rc;
|
|
|
|
return clint_cold_timer_init(ct, ctmaster);
|
|
}
|
|
|
|
static const struct fdt_match timer_clint_match[] = {
|
|
{ .compatible = "riscv,clint0" },
|
|
{ .compatible = "sifive,clint0" },
|
|
{ },
|
|
};
|
|
|
|
struct fdt_timer fdt_timer_clint = {
|
|
.match_table = timer_clint_match,
|
|
.cold_init = timer_clint_cold_init,
|
|
.warm_init = clint_warm_timer_init,
|
|
.exit = NULL,
|
|
};
|