[rtc-linux] [PATCH v3 2/3] rtc: omap: Add internal clock enabling support
From: Keerthy <j-keerthy@ti.com>
Date: 2015-08-18 06:18:57
Subsystem:
real time clock (rtc) subsystem, the rest · Maintainers:
Alexandre Belloni, Linus Torvalds
The rtc can be clocked by an internal 32K clock. Adding the support to enable the same. Signed-off-by: Keerthy <j-keerthy@ti.com> --- drivers/rtc/rtc-omap.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index 8b6355f..f31c012 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c@@ -25,6 +25,7 @@ #include <linux/of_device.h> #include <linux/pm_runtime.h> #include <linux/io.h> +#include <linux/clk.h> /* * 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 rtc_device *rtc; void __iomem *base; + struct clk *clk; int irq_alarm; int irq_timer; u8 interrupts_reg;
@@ -553,6 +555,11 @@ static int omap_rtc_probe(struct platform_device *pdev) if (rtc->irq_alarm <= 0) 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); rtc->base = devm_ioremap_resource(&pdev->dev, res); 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); + if (!IS_ERR(rtc->clk)) + clk_disable_unprepare(rtc->clk); + rtc->type->unlock(rtc); /* leave rtc running, but disable irqs */ rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, 0);
--
1.9.1
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