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authorSean Paul <seanpaul@chromium.org>2017-05-18 09:24:30 -0400
committerSean Paul <seanpaul@chromium.org>2017-05-18 09:24:30 -0400
commit6b7781b42dc9bc9bcd1523b6c24b876cdda0bef3 (patch)
treeee55c67e4ea30b9eb44f301ba0bde2e631a26162 /drivers/clocksource/time-orion.c
parent52d9d38c183bf0e09601d875ea31bb53c05dd8cf (diff)
parente98c58e55f68f8785aebfab1f8c9a03d8de0afe1 (diff)
Merge remote-tracking branch 'airlied/drm-next' into drm-misc-next
Picking up drm-next @ 4.12-rc1 in order to apply Michal Hocko's vmalloc patch set Signed-off-by: Sean Paul <seanpaul@chromium.org>
Diffstat (limited to 'drivers/clocksource/time-orion.c')
-rw-r--r--drivers/clocksource/time-orion.c34
1 files changed, 28 insertions, 6 deletions
diff --git a/drivers/clocksource/time-orion.c b/drivers/clocksource/time-orion.c
index a28f496e97cf..b9b97f630c4d 100644
--- a/drivers/clocksource/time-orion.c
+++ b/drivers/clocksource/time-orion.c
@@ -15,6 +15,7 @@
#include <linux/bitops.h>
#include <linux/clk.h>
#include <linux/clockchips.h>
+#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
@@ -36,6 +37,21 @@
static void __iomem *timer_base;
+static unsigned long notrace orion_read_timer(void)
+{
+ return ~readl(timer_base + TIMER0_VAL);
+}
+
+static struct delay_timer orion_delay_timer = {
+ .read_current_timer = orion_read_timer,
+};
+
+static void orion_delay_timer_init(unsigned long rate)
+{
+ orion_delay_timer.freq = rate;
+ register_current_timer_delay(&orion_delay_timer);
+}
+
/*
* Free-running clocksource handling.
*/
@@ -106,6 +122,7 @@ static struct irqaction orion_clkevt_irq = {
static int __init orion_timer_init(struct device_node *np)
{
+ unsigned long rate;
struct clk *clk;
int irq, ret;
@@ -124,7 +141,7 @@ static int __init orion_timer_init(struct device_node *np)
ret = clk_prepare_enable(clk);
if (ret) {
- pr_err("Failed to prepare clock");
+ pr_err("Failed to prepare clock\n");
return ret;
}
@@ -135,6 +152,8 @@ static int __init orion_timer_init(struct device_node *np)
return -EINVAL;
}
+ rate = clk_get_rate(clk);
+
/* setup timer0 as free-running clocksource */
writel(~0, timer_base + TIMER0_VAL);
writel(~0, timer_base + TIMER0_RELOAD);
@@ -142,15 +161,15 @@ static int __init orion_timer_init(struct device_node *np)
TIMER0_RELOAD_EN | TIMER0_EN,
TIMER0_RELOAD_EN | TIMER0_EN);
- ret = clocksource_mmio_init(timer_base + TIMER0_VAL, "orion_clocksource",
- clk_get_rate(clk), 300, 32,
+ ret = clocksource_mmio_init(timer_base + TIMER0_VAL,
+ "orion_clocksource", rate, 300, 32,
clocksource_mmio_readl_down);
if (ret) {
- pr_err("Failed to initialize mmio timer");
+ pr_err("Failed to initialize mmio timer\n");
return ret;
}
- sched_clock_register(orion_read_sched_clock, 32, clk_get_rate(clk));
+ sched_clock_register(orion_read_sched_clock, 32, rate);
/* setup timer1 as clockevent timer */
ret = setup_irq(irq, &orion_clkevt_irq);
@@ -162,9 +181,12 @@ static int __init orion_timer_init(struct device_node *np)
ticks_per_jiffy = (clk_get_rate(clk) + HZ/2) / HZ;
orion_clkevt.cpumask = cpumask_of(0);
orion_clkevt.irq = irq;
- clockevents_config_and_register(&orion_clkevt, clk_get_rate(clk),
+ clockevents_config_and_register(&orion_clkevt, rate,
ORION_ONESHOT_MIN, ORION_ONESHOT_MAX);
+
+ orion_delay_timer_init(rate);
+
return 0;
}
CLOCKSOURCE_OF_DECLARE(orion_timer, "marvell,orion-timer", orion_timer_init);