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Commit 532409aa authored by Keerthy's avatar Keerthy Committed by Alexandre Belloni
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rtc: omap: Add internal clock enabling support 



The rtc can be clocked by an internal 32K clock. Adding the support
to enable the same.

Signed-off-by: default avatarKeerthy <j-keerthy@ti.com>
Acked-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
parent fff51e77

drivers/rtc/rtc-omap.c

+10 −0
Original line number Original line Diff line number Diff line
@@ -25,6 +25,7 @@ 
#include <linux/of_device.h>

#include <linux/of_device.h>

#include <linux/pm_runtime.h>

#include <linux/pm_runtime.h>

#include <linux/io.h>

#include <linux/io.h>

#include <linux/clk.h>





/*

/*

 * The OMAP RTC is a year/month/day/hours/minutes/seconds BCD clock

 * The OMAP RTC is a year/month/day/hours/minutes/seconds BCD clock
@@ -132,6 +133,7 @@ struct omap_rtc_device_type { 
struct omap_rtc {

struct omap_rtc {

	struct rtc_device *rtc;

	struct rtc_device *rtc;

	void __iomem *base;

	void __iomem *base;

	struct clk *clk;

	int irq_alarm;

	int irq_alarm;

	int irq_timer;

	int irq_timer;

	u8 interrupts_reg;

	u8 interrupts_reg;
@@ -553,6 +555,11 @@ static int omap_rtc_probe(struct platform_device *pdev) 
	if (rtc->irq_alarm <= 0)

	if (rtc->irq_alarm <= 0)

		return -ENOENT;

		return -ENOENT;





	rtc->clk = devm_clk_get(&pdev->dev, "int-clk");



	if (!IS_ERR(rtc->clk))

		clk_prepare_enable(rtc->clk);



	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	rtc->base = devm_ioremap_resource(&pdev->dev, res);

	rtc->base = devm_ioremap_resource(&pdev->dev, res);

	if (IS_ERR(rtc->base))

	if (IS_ERR(rtc->base))
@@ -681,6 +688,9 @@ static int __exit omap_rtc_remove(struct platform_device *pdev) 




	device_init_wakeup(&pdev->dev, 0);

	device_init_wakeup(&pdev->dev, 0);





	if (!IS_ERR(rtc->clk))

		clk_disable_unprepare(rtc->clk);



	rtc->type->unlock(rtc);

	rtc->type->unlock(rtc);

	/* leave rtc running, but disable irqs */

	/* leave rtc running, but disable irqs */

	rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, 0);

	rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, 0);