linux-kernel - [PATCH v2 2/3] clocksource/drivers/timer-milbeaut: Add shutdown function

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Message-Id: <1555054611-23566-3-git-send-email-sugaya.taichi@socionext.com>
Date:   Fri, 12 Apr 2019 16:36:50 +0900
From:   Sugaya Taichi <sugaya.taichi@...ionext.com>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel@...r.kernel.org
Cc:     Takao Orito <orito.takao@...ionext.com>,
        Kazuhiro Kasai <kasai.kazuhiro@...ionext.com>,
        Shinji Kanematsu <kanematsu.shinji@...ionext.com>,
        Jassi Brar <jaswinder.singh@...aro.org>,
        Masami Hiramatsu <masami.hiramatsu@...aro.org>,
        Sugaya Taichi <sugaya.taichi@...ionext.com>
Subject: [PATCH v2 2/3] clocksource/drivers/timer-milbeaut: Add shutdown function

Add a shutdown operation to support shutdown timer.

Signed-off-by: Sugaya Taichi <sugaya.taichi@...ionext.com>
---
 drivers/clocksource/timer-milbeaut.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/clocksource/timer-milbeaut.c b/drivers/clocksource/timer-milbeaut.c
index 9fd5d08..f478061 100644
--- a/drivers/clocksource/timer-milbeaut.c
+++ b/drivers/clocksource/timer-milbeaut.c
@@ -85,6 +85,15 @@ static int mlb_set_state_oneshot(struct clock_event_device *clk)
 	return 0;
 }
 
+static int mlb_set_state_shutdown(struct clock_event_device *clk)
+{
+	struct timer_of *to = to_timer_of(clk);
+	u32 val = MLB_TMR_TMCSR_CSL_DIV2;
+
+	writel_relaxed(val, timer_of_base(to) + MLB_TMR_EVT_TMCSR_OFS);
+	return 0;
+}
+
 static int mlb_clkevt_next_event(unsigned long event,
 				   struct clock_event_device *clk)
 {
@@ -125,6 +134,7 @@ static int mlb_config_clock_event(struct timer_of *to)
 		.features = CLOCK_EVT_FEAT_DYNIRQ | CLOCK_EVT_FEAT_ONESHOT,
 		.set_state_oneshot = mlb_set_state_oneshot,
 		.set_state_periodic = mlb_set_state_periodic,
+		.set_state_shutdown = mlb_set_state_shutdown,
 		.set_next_event = mlb_clkevt_next_event,
 	},
 
-- 
1.9.1