diff options
Diffstat (limited to 'drivers/rtc/rtc-mxc.c')
| -rw-r--r-- | drivers/rtc/rtc-mxc.c | 62 |
1 files changed, 8 insertions, 54 deletions
diff --git a/drivers/rtc/rtc-mxc.c b/drivers/rtc/rtc-mxc.c index a8cfbde048f4..608db97d450c 100644 --- a/drivers/rtc/rtc-mxc.c +++ b/drivers/rtc/rtc-mxc.c @@ -11,7 +11,6 @@ #include <linux/pm_wakeirq.h> #include <linux/clk.h> #include <linux/of.h> -#include <linux/of_device.h> #define RTC_INPUT_CLK_32768HZ (0x00 << 5) #define RTC_INPUT_CLK_32000HZ (0x01 << 5) @@ -70,27 +69,12 @@ struct rtc_plat_data { enum imx_rtc_type devtype; }; -static const struct platform_device_id imx_rtc_devtype[] = { - { - .name = "imx1-rtc", - .driver_data = IMX1_RTC, - }, { - .name = "imx21-rtc", - .driver_data = IMX21_RTC, - }, { - /* sentinel */ - } -}; -MODULE_DEVICE_TABLE(platform, imx_rtc_devtype); - -#ifdef CONFIG_OF static const struct of_device_id imx_rtc_dt_ids[] = { { .compatible = "fsl,imx1-rtc", .data = (const void *)IMX1_RTC }, { .compatible = "fsl,imx21-rtc", .data = (const void *)IMX21_RTC }, {} }; MODULE_DEVICE_TABLE(of, imx_rtc_dt_ids); -#endif static inline int is_imx1_rtc(struct rtc_plat_data *data) { @@ -204,11 +188,10 @@ static irqreturn_t mxc_rtc_interrupt(int irq, void *dev_id) struct platform_device *pdev = dev_id; struct rtc_plat_data *pdata = platform_get_drvdata(pdev); void __iomem *ioaddr = pdata->ioaddr; - unsigned long flags; u32 status; u32 events = 0; - spin_lock_irqsave(&pdata->rtc->irq_lock, flags); + spin_lock(&pdata->rtc->irq_lock); status = readw(ioaddr + RTC_RTCISR) & readw(ioaddr + RTC_RTCIENR); /* clear interrupt sources */ writew(status, ioaddr + RTC_RTCISR); @@ -224,7 +207,7 @@ static irqreturn_t mxc_rtc_interrupt(int irq, void *dev_id) events |= (RTC_PF | RTC_IRQF); rtc_update_irq(pdata->rtc, 1, events); - spin_unlock_irqrestore(&pdata->rtc->irq_lock, flags); + spin_unlock(&pdata->rtc->irq_lock); return IRQ_HANDLED; } @@ -307,14 +290,6 @@ static const struct rtc_class_ops mxc_rtc_ops = { .alarm_irq_enable = mxc_rtc_alarm_irq_enable, }; -static void mxc_rtc_action(void *p) -{ - struct rtc_plat_data *pdata = p; - - clk_disable_unprepare(pdata->clk_ref); - clk_disable_unprepare(pdata->clk_ipg); -} - static int mxc_rtc_probe(struct platform_device *pdev) { struct rtc_device *rtc; @@ -322,17 +297,12 @@ static int mxc_rtc_probe(struct platform_device *pdev) u32 reg; unsigned long rate; int ret; - const struct of_device_id *of_id; pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) return -ENOMEM; - of_id = of_match_device(imx_rtc_dt_ids, &pdev->dev); - if (of_id) - pdata->devtype = (enum imx_rtc_type)of_id->data; - else - pdata->devtype = pdev->id_entry->driver_data; + pdata->devtype = (uintptr_t)of_device_get_match_data(&pdev->dev); pdata->ioaddr = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(pdata->ioaddr)) @@ -362,33 +332,18 @@ static int mxc_rtc_probe(struct platform_device *pdev) rtc->range_max = (1 << 16) * 86400ULL - 1; } - pdata->clk_ipg = devm_clk_get(&pdev->dev, "ipg"); + pdata->clk_ipg = devm_clk_get_enabled(&pdev->dev, "ipg"); if (IS_ERR(pdata->clk_ipg)) { dev_err(&pdev->dev, "unable to get ipg clock!\n"); return PTR_ERR(pdata->clk_ipg); } - ret = clk_prepare_enable(pdata->clk_ipg); - if (ret) - return ret; - - pdata->clk_ref = devm_clk_get(&pdev->dev, "ref"); + pdata->clk_ref = devm_clk_get_enabled(&pdev->dev, "ref"); if (IS_ERR(pdata->clk_ref)) { - clk_disable_unprepare(pdata->clk_ipg); dev_err(&pdev->dev, "unable to get ref clock!\n"); return PTR_ERR(pdata->clk_ref); } - ret = clk_prepare_enable(pdata->clk_ref); - if (ret) { - clk_disable_unprepare(pdata->clk_ipg); - return ret; - } - - ret = devm_add_action_or_reset(&pdev->dev, mxc_rtc_action, pdata); - if (ret) - return ret; - rate = clk_get_rate(pdata->clk_ref); if (rate == 32768) @@ -422,13 +377,13 @@ static int mxc_rtc_probe(struct platform_device *pdev) } if (pdata->irq >= 0) { - device_init_wakeup(&pdev->dev, 1); + device_init_wakeup(&pdev->dev, true); ret = dev_pm_set_wake_irq(&pdev->dev, pdata->irq); if (ret) dev_err(&pdev->dev, "failed to enable irq wake\n"); } - ret = rtc_register_device(rtc); + ret = devm_rtc_register_device(rtc); return ret; } @@ -436,9 +391,8 @@ static int mxc_rtc_probe(struct platform_device *pdev) static struct platform_driver mxc_rtc_driver = { .driver = { .name = "mxc_rtc", - .of_match_table = of_match_ptr(imx_rtc_dt_ids), + .of_match_table = imx_rtc_dt_ids, }, - .id_table = imx_rtc_devtype, .probe = mxc_rtc_probe, }; |