Add pm_runtime feature to dmtimer whereby *_runtime_get_sync()
is called within omap_dm_timer_enable(), pm_runtime_put()
is called in omap_dm_timer_disable(). In addition to calling
pm_runtime_enable, we are calling pm_runtime_irq_safe so that
they can be called from interrupt context.
Signed-off-by: Tarun Kanti DebBarma <tarun.ka...@ti.com>
Signed-off-by: Partha Basak <p-bas...@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilim...@ti.com>
Acked-by: Cousson, Benoit <b-cous...@ti.com>
---
arch/arm/plat-omap/dmtimer.c | 33 ++++++++--------------------
arch/arm/plat-omap/include/plat/dmtimer.h | 1 -
2 files changed, 10 insertions(+), 24 deletions(-)
diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c
index b486fd2..53821a3 100644
--- a/arch/arm/plat-omap/dmtimer.c
+++ b/arch/arm/plat-omap/dmtimer.c
@@ -38,6 +38,7 @@
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/err.h>
+#include <linux/pm_runtime.h>
#include <plat/dmtimer.h>
@@ -202,33 +203,13 @@ EXPORT_SYMBOL_GPL(omap_dm_timer_free);
void omap_dm_timer_enable(struct omap_dm_timer *timer)
{
- struct dmtimer_platform_data *pdata = timer->pdev->dev.platform_data;
-
- if (timer->enabled)
- return;
-
- if (!pdata->needs_manual_reset) {
- clk_enable(timer->fclk);
- clk_enable(timer->iclk);
- }
-
- timer->enabled = 1;
+ pm_runtime_get_sync(&timer->pdev->dev);
}
EXPORT_SYMBOL_GPL(omap_dm_timer_enable);
void omap_dm_timer_disable(struct omap_dm_timer *timer)
{
- struct dmtimer_platform_data *pdata = timer->pdev->dev.platform_data;
-
- if (!timer->enabled)
- return;
-
- if (!pdata->needs_manual_reset) {
- clk_disable(timer->iclk);
- clk_disable(timer->fclk);
- }
-
- timer->enabled = 0;
+ pm_runtime_put(&timer->pdev->dev);
}
EXPORT_SYMBOL_GPL(omap_dm_timer_disable);
@@ -463,7 +444,7 @@ int omap_dm_timers_active(void)
struct omap_dm_timer *timer;
list_for_each_entry(timer, &omap_timer_list, node) {
- if (!timer->enabled)
+ if (!timer->reserved)
continue;
if (omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG) &
@@ -533,6 +514,12 @@ static int __devinit omap_dm_timer_probe(struct
platform_device *pdev)
timer->irq = irq->start;
timer->pdev = pdev;
+ /* Skip pm_runtime_enable for OMAP1 */
+ if (!pdata->needs_manual_reset) {
+ pm_runtime_enable(&pdev->dev);
+ pm_runtime_irq_safe(&pdev->dev);
+ }
+
/* add the timer element to the list */
spin_lock_irqsave(&dm_timer_lock, flags);
list_add_tail(&timer->node, &omap_timer_list);
diff --git a/arch/arm/plat-omap/include/plat/dmtimer.h
b/arch/arm/plat-omap/include/plat/dmtimer.h
index 6cedc73..351b6cd 100644
--- a/arch/arm/plat-omap/include/plat/dmtimer.h
+++ b/arch/arm/plat-omap/include/plat/dmtimer.h
@@ -243,7 +243,6 @@ struct omap_dm_timer {
unsigned long rate;
unsigned reserved:1;
- unsigned enabled:1;
unsigned posted:1;
struct platform_device *pdev;
struct list_head node;
--
1.7.0.4
--
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