tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
clocksource: sti: Provide 'use timer as sched clock' capability
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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drivers/clocksource/clksrc_st_lpc.c
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drivers/clocksource/clksrc_st_lpc.c
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#include <linux/clocksource.h>
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#include <linux/init.h>
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#include <linux/of_address.h>
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#include <linux/sched_clock.h>
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#include <linux/slab.h>
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#include <dt-bindings/mfd/st-lpc.h>
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writel_relaxed(1, ddata.base + LPC_LPT_START_OFF);
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}
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static u64 notrace st_clksrc_sched_clock_read(void)
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{
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return (u64)readl_relaxed(ddata.base + LPC_LPT_LSB_OFF);
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}
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static int __init st_clksrc_init(void)
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{
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unsigned long rate;
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st_clksrc_reset();
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rate = clk_get_rate(ddata.clk);
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sched_clock_register(st_clksrc_sched_clock_read, 32, rate);
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ret = clocksource_mmio_init(ddata.base + LPC_LPT_LSB_OFF,
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"clksrc-st-lpc", rate, 300, 32,