Commit ffe07cea authored by Tarun Kanti DebBarma's avatar Tarun Kanti DebBarma Committed by Tony Lindgren
Browse files

ARM: OMAP: dmtimer: pm_runtime support 



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: default avatarTarun Kanti DebBarma <tarun.kanti@ti.com>
Signed-off-by: default avatarPartha Basak <p-basak2@ti.com>
Reviewed-by: default avatarSantosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: default avatarCousson, Benoit <b-cousson@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 3392cdd3

arch/arm/plat-omap/dmtimer.c

+10 −23
Original line number Diff line number Diff line
@@ -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);
@@ -460,7 +441,7 @@ 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) &
@@ -530,6 +511,12 @@ 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);

arch/arm/plat-omap/include/plat/dmtimer.h

+0 −1
Original line number Diff line number Diff line
@@ -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;

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