diff options
Diffstat (limited to 'drivers/rtc/rtc-ds1685.c')
| -rw-r--r-- | drivers/rtc/rtc-ds1685.c | 47 |
1 files changed, 19 insertions, 28 deletions
diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c index 56c670af2e50..97423f1d0361 100644 --- a/drivers/rtc/rtc-ds1685.c +++ b/drivers/rtc/rtc-ds1685.c @@ -3,7 +3,7 @@ * An rtc driver for the Dallas/Maxim DS1685/DS1687 and related real-time * chips. * - * Copyright (C) 2011-2014 Joshua Kinard <kumba@gentoo.org>. + * Copyright (C) 2011-2014 Joshua Kinard <linux@kumba.dev>. * Copyright (C) 2009 Matthias Fuchs <matthias.fuchs@esd-electronics.com>. * * References: @@ -132,7 +132,7 @@ ds1685_rtc_bin2bcd(struct ds1685_priv *rtc, u8 val, u8 bin_mask, u8 bcd_mask) } /** - * s1685_rtc_check_mday - check validity of the day of month. + * ds1685_rtc_check_mday - check validity of the day of month. * @rtc: pointer to the ds1685 rtc structure. * @mday: day of month. * @@ -193,12 +193,12 @@ ds1685_rtc_begin_data_access(struct ds1685_priv *rtc) rtc->write(rtc, RTC_CTRL_B, (rtc->read(rtc, RTC_CTRL_B) | RTC_CTRL_B_SET)); + /* Switch to Bank 1 */ + ds1685_rtc_switch_to_bank1(rtc); + /* Read Ext Ctrl 4A and check the INCR bit to avoid a lockout. */ while (rtc->read(rtc, RTC_EXT_CTRL_4A) & RTC_CTRL_4A_INCR) cpu_relax(); - - /* Switch to Bank 1 */ - ds1685_rtc_switch_to_bank1(rtc); } /** @@ -213,7 +213,7 @@ static inline void ds1685_rtc_end_data_access(struct ds1685_priv *rtc) { /* Switch back to Bank 0 */ - ds1685_rtc_switch_to_bank1(rtc); + ds1685_rtc_switch_to_bank0(rtc); /* Clear the SET bit in Ctrl B */ rtc->write(rtc, RTC_CTRL_B, @@ -658,7 +658,6 @@ ds1685_rtc_irq_handler(int irq, void *dev_id) { struct platform_device *pdev = dev_id; struct ds1685_priv *rtc = platform_get_drvdata(pdev); - struct mutex *rtc_mutex; u8 ctrlb, ctrlc; unsigned long events = 0; u8 num_irqs = 0; @@ -667,8 +666,7 @@ ds1685_rtc_irq_handler(int irq, void *dev_id) if (unlikely(!rtc)) return IRQ_HANDLED; - rtc_mutex = &rtc->dev->ops_lock; - mutex_lock(rtc_mutex); + rtc_lock(rtc->dev); /* Ctrlb holds the interrupt-enable bits and ctrlc the flag bits. */ ctrlb = rtc->read(rtc, RTC_CTRL_B); @@ -713,7 +711,7 @@ ds1685_rtc_irq_handler(int irq, void *dev_id) } } rtc_update_irq(rtc->dev, num_irqs, events); - mutex_unlock(rtc_mutex); + rtc_unlock(rtc->dev); return events ? IRQ_HANDLED : IRQ_NONE; } @@ -1275,7 +1273,7 @@ ds1685_rtc_probe(struct platform_device *pdev) /* See if the platform doesn't support UIE. */ if (pdata->uie_unsupported) - rtc_dev->uie_unsupported = 1; + clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc_dev->features); rtc->dev = rtc_dev; @@ -1287,13 +1285,10 @@ ds1685_rtc_probe(struct platform_device *pdev) * there won't be an automatic way of notifying the kernel about it, * unless ctrlc is explicitly polled. */ - if (!pdata->no_irq) { - ret = platform_get_irq(pdev, 0); - if (ret <= 0) - return ret; - - rtc->irq_num = ret; - + rtc->irq_num = platform_get_irq(pdev, 0); + if (rtc->irq_num <= 0) { + clear_bit(RTC_FEATURE_ALARM, rtc_dev->features); + } else { /* Request an IRQ. */ ret = devm_request_threaded_irq(&pdev->dev, rtc->irq_num, NULL, ds1685_rtc_irq_handler, @@ -1307,7 +1302,6 @@ ds1685_rtc_probe(struct platform_device *pdev) rtc->irq_num = 0; } } - rtc->no_irq = pdata->no_irq; /* Setup complete. */ ds1685_rtc_switch_to_bank0(rtc); @@ -1316,20 +1310,19 @@ ds1685_rtc_probe(struct platform_device *pdev) if (ret) return ret; - rtc_dev->nvram_old_abi = true; nvmem_cfg.priv = rtc; - ret = rtc_nvmem_register(rtc_dev, &nvmem_cfg); + ret = devm_rtc_nvmem_register(rtc_dev, &nvmem_cfg); if (ret) return ret; - return rtc_register_device(rtc_dev); + return devm_rtc_register_device(rtc_dev); } /** * ds1685_rtc_remove - removes rtc driver. * @pdev: pointer to platform_device structure. */ -static int +static void ds1685_rtc_remove(struct platform_device *pdev) { struct ds1685_priv *rtc = platform_get_drvdata(pdev); @@ -1351,8 +1344,6 @@ ds1685_rtc_remove(struct platform_device *pdev) rtc->write(rtc, RTC_EXT_CTRL_4A, (rtc->read(rtc, RTC_EXT_CTRL_4A) & ~(RTC_CTRL_4A_RWK_MASK))); - - return 0; } /* @@ -1397,7 +1388,7 @@ ds1685_rtc_poweroff(struct platform_device *pdev) * have been taken care of by the shutdown scripts and this * is the final function call. */ - if (!rtc->no_irq) + if (rtc->irq_num) disable_irq_nosync(rtc->irq_num); /* Oscillator must be on and the countdown chain enabled. */ @@ -1441,11 +1432,11 @@ ds1685_rtc_poweroff(struct platform_device *pdev) unreachable(); } } -EXPORT_SYMBOL(ds1685_rtc_poweroff); +EXPORT_SYMBOL_GPL(ds1685_rtc_poweroff); /* ----------------------------------------------------------------------- */ -MODULE_AUTHOR("Joshua Kinard <kumba@gentoo.org>"); +MODULE_AUTHOR("Joshua Kinard <linux@kumba.dev>"); MODULE_AUTHOR("Matthias Fuchs <matthias.fuchs@esd-electronics.com>"); MODULE_DESCRIPTION("Dallas/Maxim DS1685/DS1687-series RTC driver"); MODULE_LICENSE("GPL"); |