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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2018 Kalray Inc.
*/
#include <common.h>
#include <clock.h>
#include <init.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <asm/sfr.h>
static uint64_t kvx_pm_read(void)
{
return kvx_sfr_get(PM0);
}
static struct clocksource kvx_clksrc = {
.read = kvx_pm_read,
.mask = CLOCKSOURCE_MASK(64),
.shift = 0,
.priority = 70,
};
static int kvx_timer_probe(struct device *dev)
{
struct clk *clk;
uint32_t clk_freq;
/* Get clock frequency */
clk = clk_get(dev, NULL);
if (IS_ERR(clk)) {
dev_err(dev, "Failed to get CPU clock: %ld\n", PTR_ERR(clk));
return PTR_ERR(clk);
}
clk_freq = clk_get_rate(clk);
clk_put(clk);
/* Init clocksource */
kvx_clksrc.mult = clocksource_hz2mult(clk_freq, kvx_clksrc.shift);
return init_clock(&kvx_clksrc);
}
static struct of_device_id kvx_timer_dt_ids[] = {
{ .compatible = "kalray,kvx-core-timer", },
{ }
};
MODULE_DEVICE_TABLE(of, kvx_timer_dt_ids);
static struct driver kvx_timer_driver = {
.name = "kvx-timer",
.probe = kvx_timer_probe,
.of_compatible = DRV_OF_COMPAT(kvx_timer_dt_ids),
};
postcore_platform_driver(kvx_timer_driver);
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