linux-kernel - [tip: timers/core] clocksource/timer-riscv: Add riscv_clock

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Date: Thu, 18 Jan 2024 19:23:58 -0000
From: "tip-bot2 for Joshua Yeong" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Joshua Yeong <joshua.yeong@...rfivetech.com>,
 Anup Patel <anup@...infault.org>, Daniel Lezcano <daniel.lezcano@...aro.org>,
 x86@...nel.org, linux-kernel@...r.kernel.org
Subject:
 [tip: timers/core] clocksource/timer-riscv: Add riscv_clock_shutdown callback

The following commit has been merged into the timers/core branch of tip:

Commit-ID:     6a902b118e7f30dbf0e6248f7b0f97e12c0939c3
Gitweb:        https://git.kernel.org/tip/6a902b118e7f30dbf0e6248f7b0f97e12c0939c3
Author:        Joshua Yeong <joshua.yeong@...rfivetech.com>
AuthorDate:    Thu, 16 Nov 2023 18:53:12 +08:00
Committer:     Daniel Lezcano <daniel.lezcano@...aro.org>
CommitterDate: Wed, 27 Dec 2023 15:37:11 +01:00

clocksource/timer-riscv: Add riscv_clock_shutdown callback

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@...rfivetech.com>
Reviewed-by: Anup Patel <anup@...infault.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
Link: https://lore.kernel.org/r/20231116105312.4800-1-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 57857c0..e66dcbd 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,
 };
 
 /*