diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2017-05-30 09:53:30 +0200 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2017-07-06 22:37:14 +0200 |
| commit | ac05fba39cc5a959e5d9ca24a059d884db0118a5 (patch) | |
| tree | c4c1dd68eaf373e9f9b7970636f6ef6756b75937 /drivers/rtc | |
| parent | e48585dec2bd0183436437995e30d20dfa92f6aa (diff) | |
| download | linux-ac05fba39cc5a959e5d9ca24a059d884db0118a5.tar.bz2 | |
rtc: gemini: Add optional clock handling
This makes the Gemini optionally take two clock references to
the PCLK and EXTCLK. As we are adding a clock framework to the
Gemini platform we need to make sure that we get the right
references.
Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-gemini.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-gemini.c b/drivers/rtc/rtc-gemini.c index 5279390bb42d..cf766e01832a 100644 --- a/drivers/rtc/rtc-gemini.c +++ b/drivers/rtc/rtc-gemini.c @@ -26,6 +26,7 @@ #include <linux/platform_device.h> #include <linux/kernel.h> #include <linux/module.h> +#include <linux/clk.h> #define DRV_NAME "rtc-gemini" @@ -38,6 +39,8 @@ struct gemini_rtc { struct rtc_device *rtc_dev; void __iomem *rtc_base; int rtc_irq; + struct clk *pclk; + struct clk *extclk; }; enum gemini_rtc_offsets { @@ -127,6 +130,27 @@ static int gemini_rtc_probe(struct platform_device *pdev) return -ENOMEM; platform_set_drvdata(pdev, rtc); + rtc->pclk = devm_clk_get(dev, "PCLK"); + if (IS_ERR(rtc->pclk)) { + dev_err(dev, "could not get PCLK\n"); + } else { + ret = clk_prepare_enable(rtc->pclk); + if (ret) { + dev_err(dev, "failed to enable PCLK\n"); + return ret; + } + } + rtc->extclk = devm_clk_get(dev, "EXTCLK"); + if (IS_ERR(rtc->extclk)) { + dev_err(dev, "could not get EXTCLK\n"); + } else { + ret = clk_prepare_enable(rtc->extclk); + if (ret) { + dev_err(dev, "failed to enable EXTCLK\n"); + return ret; + } + } + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (!res) return -ENODEV; @@ -156,6 +180,10 @@ static int gemini_rtc_remove(struct platform_device *pdev) { struct gemini_rtc *rtc = platform_get_drvdata(pdev); + if (!IS_ERR(rtc->extclk)) + clk_disable_unprepare(rtc->extclk); + if (!IS_ERR(rtc->pclk)) + clk_disable_unprepare(rtc->pclk); rtc_device_unregister(rtc->rtc_dev); return 0; |