linux-kernel - [tip: timers/core] clocksource/drivers/fttmr010: Parametrise shutdown

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Thu, 19 Mar 2020 08:47:54 -0000
From:   "tip-bot2 for Joel Stanley" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     clg@...d.org, Linus Walleij <linus.walleij@...aro.org>,
        Joel Stanley <joel@....id.au>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        x86 <x86@...nel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: [tip: timers/core] clocksource/drivers/fttmr010: Parametrise shutdown

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

Commit-ID:     84fb64c28acd85ae4d29b9c81926bdfa5f1bf25e
Gitweb:        https://git.kernel.org/tip/84fb64c28acd85ae4d29b9c81926bdfa5f1bf25e
Author:        Joel Stanley <joel@....id.au>
AuthorDate:    Thu, 07 Nov 2019 20:12:15 +10:30
Committer:     Daniel Lezcano <daniel.lezcano@...aro.org>
CommitterDate: Fri, 21 Feb 2020 09:28:38 +01:00

clocksource/drivers/fttmr010: Parametrise shutdown

In preparation for supporting the ast2600 which uses a different method
to clear bits in the control register, use a callback for performing the
shutdown sequence.

Reviewed-by: Cédric Le Goater <clg@...d.org>
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Joel Stanley <joel@....id.au>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
Link: https://lore.kernel.org/r/20191107094218.13210-2-joel@jms.id.au
---
 drivers/clocksource/timer-fttmr010.c | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/drivers/clocksource/timer-fttmr010.c b/drivers/clocksource/timer-fttmr010.c
index fadff79..c2d30eb 100644
--- a/drivers/clocksource/timer-fttmr010.c
+++ b/drivers/clocksource/timer-fttmr010.c
@@ -97,6 +97,7 @@ struct fttmr010 {
 	bool is_aspeed;
 	u32 t1_enable_val;
 	struct clock_event_device clkevt;
+	int (*timer_shutdown)(struct clock_event_device *evt);
 #ifdef CONFIG_ARM
 	struct delay_timer delay_timer;
 #endif
@@ -140,9 +141,7 @@ static int fttmr010_timer_set_next_event(unsigned long cycles,
 	u32 cr;
 
 	/* Stop */
-	cr = readl(fttmr010->base + TIMER_CR);
-	cr &= ~fttmr010->t1_enable_val;
-	writel(cr, fttmr010->base + TIMER_CR);
+	fttmr010->timer_shutdown(evt);
 
 	if (fttmr010->is_aspeed) {
 		/*
@@ -183,9 +182,7 @@ static int fttmr010_timer_set_oneshot(struct clock_event_device *evt)
 	u32 cr;
 
 	/* Stop */
-	cr = readl(fttmr010->base + TIMER_CR);
-	cr &= ~fttmr010->t1_enable_val;
-	writel(cr, fttmr010->base + TIMER_CR);
+	fttmr010->timer_shutdown(evt);
 
 	/* Setup counter start from 0 or ~0 */
 	writel(0, fttmr010->base + TIMER1_COUNT);
@@ -211,9 +208,7 @@ static int fttmr010_timer_set_periodic(struct clock_event_device *evt)
 	u32 cr;
 
 	/* Stop */
-	cr = readl(fttmr010->base + TIMER_CR);
-	cr &= ~fttmr010->t1_enable_val;
-	writel(cr, fttmr010->base + TIMER_CR);
+	fttmr010->timer_shutdown(evt);
 
 	/* Setup timer to fire at 1/HZ intervals. */
 	if (fttmr010->is_aspeed) {
@@ -350,6 +345,8 @@ static int __init fttmr010_common_init(struct device_node *np, bool is_aspeed)
 				     fttmr010->tick_rate);
 	}
 
+	fttmr010->timer_shutdown = fttmr010_timer_shutdown;
+
 	/*
 	 * Setup clockevent timer (interrupt-driven) on timer 1.
 	 */
@@ -370,10 +367,10 @@ static int __init fttmr010_common_init(struct device_node *np, bool is_aspeed)
 	fttmr010->clkevt.features = CLOCK_EVT_FEAT_PERIODIC |
 		CLOCK_EVT_FEAT_ONESHOT;
 	fttmr010->clkevt.set_next_event = fttmr010_timer_set_next_event;
-	fttmr010->clkevt.set_state_shutdown = fttmr010_timer_shutdown;
+	fttmr010->clkevt.set_state_shutdown = fttmr010->timer_shutdown;
 	fttmr010->clkevt.set_state_periodic = fttmr010_timer_set_periodic;
 	fttmr010->clkevt.set_state_oneshot = fttmr010_timer_set_oneshot;
-	fttmr010->clkevt.tick_resume = fttmr010_timer_shutdown;
+	fttmr010->clkevt.tick_resume = fttmr010->timer_shutdown;
 	fttmr010->clkevt.cpumask = cpumask_of(0);
 	fttmr010->clkevt.irq = irq;
 	clockevents_config_and_register(&fttmr010->clkevt,