From: Joshua Yeong <joshua.yeong@starfivetech.com>
To: <daniel.lezcano@linaro.org>, <tglx@linutronix.de>,
<paul.walmsley@sifive.com>, <palmer@dabbelt.com>,
<aou@eecs.berkeley.edu>
Cc: <leyfoon.tan@starfivetech.com>, <linux-kernel@vger.kernel.org>,
<linux-riscv@lists.infradead.org>,
Joshua Yeong <joshua.yeong@starfivetech.com>
Subject: [PATCH v2 1/1] clocksource/timer-risc: Add riscv_clock_shutdown callback
Date: Thu, 16 Nov 2023 12:07:49 +0800 [thread overview]
Message-ID: <20231116040749.8430-1-joshua.yeong@starfivetech.com> (raw)
Add clocksource detach/shutdown callback to disable RISC-V timer interrupt when
switching out riscv timer as clock source
Signed-off-by: Joshua Yeong <joshua.yeong@starfivetech.com>
---
drivers/clocksource/timer-riscv.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/clocksource/timer-riscv.c b/drivers/clocksource/timer-riscv.c
index 57857c0dfba9..e66dcbd66566 100644
--- a/drivers/clocksource/timer-riscv.c
+++ b/drivers/clocksource/timer-riscv.c
@@ -61,12 +61,19 @@ static int riscv_clock_next_event(unsigned long delta,
return 0;
}
+static int riscv_clock_shutdown(struct clock_event_device *evt)
+{
+ riscv_clock_event_stop();
+ return 0;
+}
+
static unsigned int riscv_clock_event_irq;
static DEFINE_PER_CPU(struct clock_event_device, riscv_clock_event) = {
.name = "riscv_timer_clockevent",
.features = CLOCK_EVT_FEAT_ONESHOT,
.rating = 100,
.set_next_event = riscv_clock_next_event,
+ .set_state_shutdown = riscv_clock_shutdown,
};
/*
--
2.25.1
next reply other threads:[~2023-11-16 4:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-16 4:07 Joshua Yeong [this message]
2023-11-16 10:12 ` Anup Patel
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