linux-kernel - [PATCH 05/15] clocksource/drivers/timer-milbeaut: Add shutdown function

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Date:   Thu,  9 May 2019 13:10:38 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     tglx@...utronix.de
Cc:     linux-kernel@...r.kernel.org,
        Sugaya Taichi <sugaya.taichi@...ionext.com>
Subject: [PATCH 05/15] clocksource/drivers/timer-milbeaut: Add shutdown function

From: Sugaya Taichi <sugaya.taichi@...ionext.com>

Add a shutdown operation to support shutdown timer.

Signed-off-by: Sugaya Taichi <sugaya.taichi@...ionext.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
---
 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 9fd5d081fac4..f4780619dbaf 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 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,
 	},
 
-- 
2.17.1