diff options
| author | Keerthy <j-keerthy@ti.com> | 2015-08-18 11:41:15 +0200 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2015-09-05 19:37:20 +0200 |
| commit | 532409aa1ba8b69d5a3dea159d4b1bd9adbd7a46 (patch) | |
| tree | 490e74374ac5471ef1a93c265d4b9f7dd0d8e9b9 | |
| parent | ARM: dts: AM437x: Add the internal and external clock nodes for rtc (diff) | |
| download | linux-532409aa1ba8b69d5a3dea159d4b1bd9adbd7a46.tar.xz linux-532409aa1ba8b69d5a3dea159d4b1bd9adbd7a46.zip | |
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: Keerthy <j-keerthy@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
| -rw-r--r-- | drivers/rtc/rtc-omap.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c index 8b6355ffaff9..f31c0127dae0 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); |