From patchwork Tue Feb 21 09:04:55 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [6/7] rtc: sa1100: enable clk support From: Haojian Zhuang X-Patchwork-Id: 142266 Message-Id: <1329815096-6200-7-git-send-email-haojian.zhuang@marvell.com> To: robert.jarzmik@free.fr, a.zummo@towertech.it, arnd@arndb.de, plagnioj@jcrosoft.com, linux-arm-kernel@lists.infradead.org, rtc-linux@googlegroups.com, linux@arm.linux.org.uk Cc: Haojian Zhuang Date: Tue, 21 Feb 2012 17:04:55 +0800 Add clk support in sa1100 rtc. Signed-off-by: Haojian Zhuang --- drivers/rtc/rtc-sa1100.c | 14 ++++++++++++++ 1 files changed, 14 insertions(+), 0 deletions(-) diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c index 90425ce..f031f4d 100644 --- a/drivers/rtc/rtc-sa1100.c +++ b/drivers/rtc/rtc-sa1100.c @@ -23,6 +23,7 @@ #include #include +#include #include #include #include @@ -63,6 +64,7 @@ struct sa1100_rtc { int irq_1hz; int irq_alarm; struct rtc_device *rtc; + struct clk *clk; void __iomem *reg_base; void __iomem *reg_rcnr; @@ -306,6 +308,13 @@ static int sa1100_rtc_probe(struct platform_device *pdev) if (!info) return -ENOMEM; + info->clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(info->clk)) { + dev_err(&pdev->dev, "failed to find rtc clock source\n"); + ret = PTR_ERR(info->clk); + goto err_clk; + } + clk_prepare_enable(info->clk); info->iobase = res->start; info->iosize = resource_size(res); info->irq_1hz = irq_1hz; @@ -379,6 +388,9 @@ err_dev: iounmap(info->reg_base); err_map: platform_set_drvdata(pdev, NULL); + clk_disable_unprepare(info->clk); + clk_put(info->clk); +err_clk: kfree(info); return ret; } @@ -391,6 +403,8 @@ static int sa1100_rtc_remove(struct platform_device *pdev) rtc_device_unregister(info->rtc); platform_set_drvdata(pdev, NULL); iounmap(info->reg_base); + clk_disable_unprepare(info->clk); + clk_put(info->clk); kfree(info); }