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path: root/drivers/clocksource/sh_cmt.c
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Diffstat (limited to 'drivers/clocksource/sh_cmt.c')
-rw-r--r--drivers/clocksource/sh_cmt.c67
1 files changed, 26 insertions, 41 deletions
diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c
index 6b3e0c2f33e..578595c4425 100644
--- a/drivers/clocksource/sh_cmt.c
+++ b/drivers/clocksource/sh_cmt.c
@@ -40,7 +40,6 @@ struct sh_cmt_priv {
struct platform_device *pdev;
unsigned long flags;
- unsigned long flags_suspend;
unsigned long match_value;
unsigned long next_match_value;
unsigned long max_match_value;
@@ -432,6 +431,11 @@ static void sh_cmt_clocksource_disable(struct clocksource *cs)
sh_cmt_stop(cs_to_sh_cmt(cs), FLAG_CLOCKSOURCE);
}
+static void sh_cmt_clocksource_resume(struct clocksource *cs)
+{
+ sh_cmt_start(cs_to_sh_cmt(cs), FLAG_CLOCKSOURCE);
+}
+
static int sh_cmt_register_clocksource(struct sh_cmt_priv *p,
char *name, unsigned long rating)
{
@@ -442,6 +446,8 @@ static int sh_cmt_register_clocksource(struct sh_cmt_priv *p,
cs->read = sh_cmt_clocksource_read;
cs->enable = sh_cmt_clocksource_enable;
cs->disable = sh_cmt_clocksource_disable;
+ cs->suspend = sh_cmt_clocksource_disable;
+ cs->resume = sh_cmt_clocksource_resume;
cs->mask = CLOCKSOURCE_MASK(sizeof(unsigned long) * 8);
cs->flags = CLOCK_SOURCE_IS_CONTINUOUS;
pr_info("sh_cmt: %s used as clock source\n", cs->name);
@@ -603,18 +609,13 @@ static int sh_cmt_setup(struct sh_cmt_priv *p, struct platform_device *pdev)
p->irqaction.handler = sh_cmt_interrupt;
p->irqaction.dev_id = p;
p->irqaction.flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL;
- ret = setup_irq(irq, &p->irqaction);
- if (ret) {
- pr_err("sh_cmt: failed to request irq %d\n", irq);
- goto err1;
- }
/* get hold of clock */
p->clk = clk_get(&p->pdev->dev, cfg->clk);
if (IS_ERR(p->clk)) {
pr_err("sh_cmt: cannot get clock \"%s\"\n", cfg->clk);
ret = PTR_ERR(p->clk);
- goto err2;
+ goto err1;
}
if (resource_size(res) == 6) {
@@ -627,14 +628,25 @@ static int sh_cmt_setup(struct sh_cmt_priv *p, struct platform_device *pdev)
p->clear_bits = ~0xc000;
}
- return sh_cmt_register(p, cfg->name,
- cfg->clockevent_rating,
- cfg->clocksource_rating);
- err2:
- remove_irq(irq, &p->irqaction);
- err1:
+ ret = sh_cmt_register(p, cfg->name,
+ cfg->clockevent_rating,
+ cfg->clocksource_rating);
+ if (ret) {
+ pr_err("sh_cmt: registration failed\n");
+ goto err1;
+ }
+
+ ret = setup_irq(irq, &p->irqaction);
+ if (ret) {
+ pr_err("sh_cmt: failed to request irq %d\n", irq);
+ goto err1;
+ }
+
+ return 0;
+
+err1:
iounmap(p->mapbase);
- err0:
+err0:
return ret;
}
@@ -668,38 +680,11 @@ static int __devexit sh_cmt_remove(struct platform_device *pdev)
return -EBUSY; /* cannot unregister clockevent and clocksource */
}
-static int sh_cmt_suspend(struct device *dev)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct sh_cmt_priv *p = platform_get_drvdata(pdev);
-
- /* save flag state and stop CMT channel */
- p->flags_suspend = p->flags;
- sh_cmt_stop(p, p->flags);
- return 0;
-}
-
-static int sh_cmt_resume(struct device *dev)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct sh_cmt_priv *p = platform_get_drvdata(pdev);
-
- /* start CMT channel from saved state */
- sh_cmt_start(p, p->flags_suspend);
- return 0;
-}
-
-static struct dev_pm_ops sh_cmt_dev_pm_ops = {
- .suspend = sh_cmt_suspend,
- .resume = sh_cmt_resume,
-};
-
static struct platform_driver sh_cmt_device_driver = {
.probe = sh_cmt_probe,
.remove = __devexit_p(sh_cmt_remove),
.driver = {
.name = "sh_cmt",
- .pm = &sh_cmt_dev_pm_ops,
}
};