summaryrefslogtreecommitdiff
path: root/drivers/clocksource/timer-fttmr010.c
diff options
context:
space:
mode:
authorJoel Stanley <joel@jms.id.au>2019-11-07 12:42:16 +0300
committerDaniel Lezcano <daniel.lezcano@linaro.org>2020-02-21 11:28:38 +0300
commit5422413ce56877f35415f6e4b53171e6e13ec4c1 (patch)
tree900329f4d99527ae26afced892af02582ebfa9c8 /drivers/clocksource/timer-fttmr010.c
parent84fb64c28acd85ae4d29b9c81926bdfa5f1bf25e (diff)
downloadlinux-5422413ce56877f35415f6e4b53171e6e13ec4c1.tar.xz
clocksource/drivers/fttmr010: Set interrupt and shutdown
In preparation for supporting the ast2600, pass the shutdown and interrupt functions to the common init callback. Reviewed-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20191107094218.13210-3-joel@jms.id.au
Diffstat (limited to 'drivers/clocksource/timer-fttmr010.c')
-rw-r--r--drivers/clocksource/timer-fttmr010.c51
1 files changed, 46 insertions, 5 deletions
diff --git a/drivers/clocksource/timer-fttmr010.c b/drivers/clocksource/timer-fttmr010.c
index c2d30eb9dc72..edb1d5f193f5 100644
--- a/drivers/clocksource/timer-fttmr010.c
+++ b/drivers/clocksource/timer-fttmr010.c
@@ -38,6 +38,11 @@
#define TIMER_CR (0x30)
/*
+ * Control register set to clear for ast2600 only.
+ */
+#define AST2600_TIMER_CR_CLR (0x3c)
+
+/*
* Control register (TMC30) bit fields for fttmr010/gemini/moxart timers.
*/
#define TIMER_1_CR_ENABLE BIT(0)
@@ -163,6 +168,16 @@ static int fttmr010_timer_set_next_event(unsigned long cycles,
return 0;
}
+static int ast2600_timer_shutdown(struct clock_event_device *evt)
+{
+ struct fttmr010 *fttmr010 = to_fttmr010(evt);
+
+ /* Stop */
+ writel(fttmr010->t1_enable_val, fttmr010->base + AST2600_TIMER_CR_CLR);
+
+ return 0;
+}
+
static int fttmr010_timer_shutdown(struct clock_event_device *evt)
{
struct fttmr010 *fttmr010 = to_fttmr010(evt);
@@ -244,7 +259,21 @@ static irqreturn_t fttmr010_timer_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
-static int __init fttmr010_common_init(struct device_node *np, bool is_aspeed)
+static irqreturn_t ast2600_timer_interrupt(int irq, void *dev_id)
+{
+ struct clock_event_device *evt = dev_id;
+ struct fttmr010 *fttmr010 = to_fttmr010(evt);
+
+ writel(0x1, fttmr010->base + TIMER_INTR_STATE);
+
+ evt->event_handler(evt);
+ return IRQ_HANDLED;
+}
+
+static int __init fttmr010_common_init(struct device_node *np,
+ bool is_aspeed,
+ int (*timer_shutdown)(struct clock_event_device *),
+ irq_handler_t irq_handler)
{
struct fttmr010 *fttmr010;
int irq;
@@ -345,7 +374,7 @@ static int __init fttmr010_common_init(struct device_node *np, bool is_aspeed)
fttmr010->tick_rate);
}
- fttmr010->timer_shutdown = fttmr010_timer_shutdown;
+ fttmr010->timer_shutdown = timer_shutdown;
/*
* Setup clockevent timer (interrupt-driven) on timer 1.
@@ -354,7 +383,7 @@ static int __init fttmr010_common_init(struct device_node *np, bool is_aspeed)
writel(0, fttmr010->base + TIMER1_LOAD);
writel(0, fttmr010->base + TIMER1_MATCH1);
writel(0, fttmr010->base + TIMER1_MATCH2);
- ret = request_irq(irq, fttmr010_timer_interrupt, IRQF_TIMER,
+ ret = request_irq(irq, irq_handler, IRQF_TIMER,
"FTTMR010-TIMER1", &fttmr010->clkevt);
if (ret) {
pr_err("FTTMR010-TIMER1 no IRQ\n");
@@ -401,14 +430,25 @@ out_disable_clock:
return ret;
}
+static __init int ast2600_timer_init(struct device_node *np)
+{
+ return fttmr010_common_init(np, true,
+ ast2600_timer_shutdown,
+ ast2600_timer_interrupt);
+}
+
static __init int aspeed_timer_init(struct device_node *np)
{
- return fttmr010_common_init(np, true);
+ return fttmr010_common_init(np, true,
+ fttmr010_timer_shutdown,
+ fttmr010_timer_interrupt);
}
static __init int fttmr010_timer_init(struct device_node *np)
{
- return fttmr010_common_init(np, false);
+ return fttmr010_common_init(np, false,
+ fttmr010_timer_shutdown,
+ fttmr010_timer_interrupt);
}
TIMER_OF_DECLARE(fttmr010, "faraday,fttmr010", fttmr010_timer_init);
@@ -416,3 +456,4 @@ TIMER_OF_DECLARE(gemini, "cortina,gemini-timer", fttmr010_timer_init);
TIMER_OF_DECLARE(moxart, "moxa,moxart-timer", fttmr010_timer_init);
TIMER_OF_DECLARE(ast2400, "aspeed,ast2400-timer", aspeed_timer_init);
TIMER_OF_DECLARE(ast2500, "aspeed,ast2500-timer", aspeed_timer_init);
+TIMER_OF_DECLARE(ast2600, "aspeed,ast2600-timer", ast2600_timer_init);