diff options
Diffstat (limited to 'drivers/rtc/rtc-ds1685.c')
| -rw-r--r-- | drivers/rtc/rtc-ds1685.c | 416 |
1 files changed, 180 insertions, 236 deletions
diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c index 2710f2594c42..97423f1d0361 100644 --- a/drivers/rtc/rtc-ds1685.c +++ b/drivers/rtc/rtc-ds1685.c @@ -1,8 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * 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: @@ -10,10 +11,6 @@ * DS17x85/DS17x87 3V/5V Real-Time Clocks, 19-5222, Rev 4/10. * DS1689/DS1693 3V/5V Serialized Real-Time Clocks, Rev 112105. * Application Note 90, Using the Multiplex Bus RTC Extended Features. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt @@ -34,7 +31,10 @@ /* ----------------------------------------------------------------------- */ -/* Standard read/write functions if platform does not provide overrides */ +/* + * Standard read/write + * all registers are mapped in CPU address space + */ /** * ds1685_read - read a value from an rtc register. @@ -62,6 +62,35 @@ ds1685_write(struct ds1685_priv *rtc, int reg, u8 value) } /* ----------------------------------------------------------------------- */ +/* + * Indirect read/write functions + * access happens via address and data register mapped in CPU address space + */ + +/** + * ds1685_indirect_read - read a value from an rtc register. + * @rtc: pointer to the ds1685 rtc structure. + * @reg: the register address to read. + */ +static u8 +ds1685_indirect_read(struct ds1685_priv *rtc, int reg) +{ + writeb(reg, rtc->regs); + return readb(rtc->data); +} + +/** + * ds1685_indirect_write - write a value to an rtc register. + * @rtc: pointer to the ds1685 rtc structure. + * @reg: the register address to write. + * @value: value to write to the register. + */ +static void +ds1685_indirect_write(struct ds1685_priv *rtc, int reg, u8 value) +{ + writeb(reg, rtc->regs); + writeb(value, rtc->data); +} /* ----------------------------------------------------------------------- */ /* Inlined functions */ @@ -103,7 +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. * @@ -164,12 +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); } /** @@ -184,7 +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, @@ -192,42 +221,6 @@ ds1685_rtc_end_data_access(struct ds1685_priv *rtc) } /** - * ds1685_rtc_begin_ctrl_access - prepare the rtc for ctrl access. - * @rtc: pointer to the ds1685 rtc structure. - * @flags: irq flags variable for spin_lock_irqsave. - * - * This takes several steps to prepare the rtc for access to read just the - * control registers: - * - Sets a spinlock on the rtc IRQ. - * - Switches the rtc to bank 1. This allows access to the two extended - * control registers. - * - * Only use this where you are certain another lock will not be held. - */ -static inline void -ds1685_rtc_begin_ctrl_access(struct ds1685_priv *rtc, unsigned long *flags) -{ - spin_lock_irqsave(&rtc->lock, *flags); - ds1685_rtc_switch_to_bank1(rtc); -} - -/** - * ds1685_rtc_end_ctrl_access - end ctrl access on the rtc. - * @rtc: pointer to the ds1685 rtc structure. - * @flags: irq flags variable for spin_unlock_irqrestore. - * - * This ends what was started by ds1685_rtc_begin_ctrl_access: - * - Switches the rtc back to bank 0. - * - Unsets the spinlock on the rtc IRQ. - */ -static inline void -ds1685_rtc_end_ctrl_access(struct ds1685_priv *rtc, unsigned long flags) -{ - ds1685_rtc_switch_to_bank0(rtc); - spin_unlock_irqrestore(&rtc->lock, flags); -} - -/** * ds1685_rtc_get_ssn - retrieve the silicon serial number. * @rtc: pointer to the ds1685 rtc structure. * @ssn: u8 array to hold the bits of the silicon serial number. @@ -268,7 +261,7 @@ static int ds1685_rtc_read_time(struct device *dev, struct rtc_time *tm) { struct ds1685_priv *rtc = dev_get_drvdata(dev); - u8 ctrlb, century; + u8 century; u8 seconds, minutes, hours, wday, mday, month, years; /* Fetch the time info from the RTC registers. */ @@ -281,7 +274,6 @@ ds1685_rtc_read_time(struct device *dev, struct rtc_time *tm) month = rtc->read(rtc, RTC_MONTH); years = rtc->read(rtc, RTC_YEAR); century = rtc->read(rtc, RTC_CENTURY); - ctrlb = rtc->read(rtc, RTC_CTRL_B); ds1685_rtc_end_data_access(rtc); /* bcd2bin if needed, perform fixups, and store to rtc_time. */ @@ -546,10 +538,6 @@ static int ds1685_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) { struct ds1685_priv *rtc = dev_get_drvdata(dev); - unsigned long flags = 0; - - /* Enable/disable the Alarm IRQ-Enable flag. */ - spin_lock_irqsave(&rtc->lock, flags); /* Flip the requisite interrupt-enable bit. */ if (enabled) @@ -561,7 +549,6 @@ ds1685_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) /* Read Control C to clear all the flag bits. */ rtc->read(rtc, RTC_CTRL_C); - spin_unlock_irqrestore(&rtc->lock, flags); return 0; } @@ -569,98 +556,18 @@ ds1685_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) /* ----------------------------------------------------------------------- */ -/* IRQ handler & workqueue. */ +/* IRQ handler */ /** - * ds1685_rtc_irq_handler - IRQ handler. - * @irq: IRQ number. - * @dev_id: platform device pointer. - */ -static irqreturn_t -ds1685_rtc_irq_handler(int irq, void *dev_id) -{ - struct platform_device *pdev = dev_id; - struct ds1685_priv *rtc = platform_get_drvdata(pdev); - u8 ctrlb, ctrlc; - unsigned long events = 0; - u8 num_irqs = 0; - - /* Abort early if the device isn't ready yet (i.e., DEBUG_SHIRQ). */ - if (unlikely(!rtc)) - return IRQ_HANDLED; - - /* Ctrlb holds the interrupt-enable bits and ctrlc the flag bits. */ - spin_lock(&rtc->lock); - ctrlb = rtc->read(rtc, RTC_CTRL_B); - ctrlc = rtc->read(rtc, RTC_CTRL_C); - - /* Is the IRQF bit set? */ - if (likely(ctrlc & RTC_CTRL_C_IRQF)) { - /* - * We need to determine if it was one of the standard - * events: PF, AF, or UF. If so, we handle them and - * update the RTC core. - */ - if (likely(ctrlc & RTC_CTRL_B_PAU_MASK)) { - events = RTC_IRQF; - - /* Check for a periodic interrupt. */ - if ((ctrlb & RTC_CTRL_B_PIE) && - (ctrlc & RTC_CTRL_C_PF)) { - events |= RTC_PF; - num_irqs++; - } - - /* Check for an alarm interrupt. */ - if ((ctrlb & RTC_CTRL_B_AIE) && - (ctrlc & RTC_CTRL_C_AF)) { - events |= RTC_AF; - num_irqs++; - } - - /* Check for an update interrupt. */ - if ((ctrlb & RTC_CTRL_B_UIE) && - (ctrlc & RTC_CTRL_C_UF)) { - events |= RTC_UF; - num_irqs++; - } - - rtc_update_irq(rtc->dev, num_irqs, events); - } else { - /* - * One of the "extended" interrupts was received that - * is not recognized by the RTC core. These need to - * be handled in task context as they can call other - * functions and the time spent in irq context needs - * to be minimized. Schedule them into a workqueue - * and inform the RTC core that the IRQs were handled. - */ - spin_unlock(&rtc->lock); - schedule_work(&rtc->work); - rtc_update_irq(rtc->dev, 0, 0); - return IRQ_HANDLED; - } - } - spin_unlock(&rtc->lock); - - return events ? IRQ_HANDLED : IRQ_NONE; -} - -/** - * ds1685_rtc_work_queue - work queue handler. - * @work: work_struct containing data to work on in task context. + * ds1685_rtc_extended_irq - take care of extended interrupts + * @rtc: pointer to the ds1685 rtc structure. + * @pdev: platform device pointer. */ static void -ds1685_rtc_work_queue(struct work_struct *work) +ds1685_rtc_extended_irq(struct ds1685_priv *rtc, struct platform_device *pdev) { - struct ds1685_priv *rtc = container_of(work, - struct ds1685_priv, work); - struct platform_device *pdev = to_platform_device(&rtc->dev->dev); - struct mutex *rtc_mutex = &rtc->dev->ops_lock; u8 ctrl4a, ctrl4b; - mutex_lock(rtc_mutex); - ds1685_rtc_switch_to_bank1(rtc); ctrl4a = rtc->read(rtc, RTC_EXT_CTRL_4A); ctrl4b = rtc->read(rtc, RTC_EXT_CTRL_4B); @@ -739,8 +646,74 @@ ds1685_rtc_work_queue(struct work_struct *work) "RAM-Clear IRQ just occurred!\n"); } ds1685_rtc_switch_to_bank0(rtc); +} - mutex_unlock(rtc_mutex); +/** + * ds1685_rtc_irq_handler - IRQ handler. + * @irq: IRQ number. + * @dev_id: platform device pointer. + */ +static irqreturn_t +ds1685_rtc_irq_handler(int irq, void *dev_id) +{ + struct platform_device *pdev = dev_id; + struct ds1685_priv *rtc = platform_get_drvdata(pdev); + u8 ctrlb, ctrlc; + unsigned long events = 0; + u8 num_irqs = 0; + + /* Abort early if the device isn't ready yet (i.e., DEBUG_SHIRQ). */ + if (unlikely(!rtc)) + return IRQ_HANDLED; + + rtc_lock(rtc->dev); + + /* Ctrlb holds the interrupt-enable bits and ctrlc the flag bits. */ + ctrlb = rtc->read(rtc, RTC_CTRL_B); + ctrlc = rtc->read(rtc, RTC_CTRL_C); + + /* Is the IRQF bit set? */ + if (likely(ctrlc & RTC_CTRL_C_IRQF)) { + /* + * We need to determine if it was one of the standard + * events: PF, AF, or UF. If so, we handle them and + * update the RTC core. + */ + if (likely(ctrlc & RTC_CTRL_B_PAU_MASK)) { + events = RTC_IRQF; + + /* Check for a periodic interrupt. */ + if ((ctrlb & RTC_CTRL_B_PIE) && + (ctrlc & RTC_CTRL_C_PF)) { + events |= RTC_PF; + num_irqs++; + } + + /* Check for an alarm interrupt. */ + if ((ctrlb & RTC_CTRL_B_AIE) && + (ctrlc & RTC_CTRL_C_AF)) { + events |= RTC_AF; + num_irqs++; + } + + /* Check for an update interrupt. */ + if ((ctrlb & RTC_CTRL_B_UIE) && + (ctrlc & RTC_CTRL_C_UF)) { + events |= RTC_UF; + num_irqs++; + } + } else { + /* + * One of the "extended" interrupts was received that + * is not recognized by the RTC core. + */ + ds1685_rtc_extended_irq(rtc, pdev); + } + } + rtc_update_irq(rtc->dev, num_irqs, events); + rtc_unlock(rtc->dev); + + return events ? IRQ_HANDLED : IRQ_NONE; } /* ----------------------------------------------------------------------- */ @@ -779,7 +752,7 @@ static int ds1685_rtc_proc(struct device *dev, struct seq_file *seq) { struct ds1685_priv *rtc = dev_get_drvdata(dev); - u8 ctrla, ctrlb, ctrlc, ctrld, ctrl4a, ctrl4b, ssn[8]; + u8 ctrla, ctrlb, ctrld, ctrl4a, ctrl4b, ssn[8]; char *model; /* Read all the relevant data from the control registers. */ @@ -787,7 +760,6 @@ ds1685_rtc_proc(struct device *dev, struct seq_file *seq) ds1685_rtc_get_ssn(rtc, ssn); ctrla = rtc->read(rtc, RTC_CTRL_A); ctrlb = rtc->read(rtc, RTC_CTRL_B); - ctrlc = rtc->read(rtc, RTC_CTRL_C); ctrld = rtc->read(rtc, RTC_CTRL_D); ctrl4a = rtc->read(rtc, RTC_EXT_CTRL_4A); ctrl4b = rtc->read(rtc, RTC_EXT_CTRL_4B); @@ -869,11 +841,15 @@ static int ds1685_nvram_read(void *priv, unsigned int pos, void *val, size_t size) { struct ds1685_priv *rtc = priv; + struct mutex *rtc_mutex = &rtc->dev->ops_lock; ssize_t count; - unsigned long flags = 0; u8 *buf = val; + int err; + + err = mutex_lock_interruptible(rtc_mutex); + if (err) + return err; - spin_lock_irqsave(&rtc->lock, flags); ds1685_rtc_switch_to_bank0(rtc); /* Read NVRAM in time and bank0 registers. */ @@ -923,7 +899,7 @@ static int ds1685_nvram_read(void *priv, unsigned int pos, void *val, ds1685_rtc_switch_to_bank0(rtc); } #endif /* !CONFIG_RTC_DRV_DS1689 */ - spin_unlock_irqrestore(&rtc->lock, flags); + mutex_unlock(rtc_mutex); return 0; } @@ -932,11 +908,15 @@ static int ds1685_nvram_write(void *priv, unsigned int pos, void *val, size_t size) { struct ds1685_priv *rtc = priv; + struct mutex *rtc_mutex = &rtc->dev->ops_lock; ssize_t count; - unsigned long flags = 0; u8 *buf = val; + int err; + + err = mutex_lock_interruptible(rtc_mutex); + if (err) + return err; - spin_lock_irqsave(&rtc->lock, flags); ds1685_rtc_switch_to_bank0(rtc); /* Write NVRAM in time and bank0 registers. */ @@ -986,7 +966,7 @@ static int ds1685_nvram_write(void *priv, unsigned int pos, void *val, ds1685_rtc_switch_to_bank0(rtc); } #endif /* !CONFIG_RTC_DRV_DS1689 */ - spin_unlock_irqrestore(&rtc->lock, flags); + mutex_unlock(rtc_mutex); return 0; } @@ -1004,7 +984,7 @@ static ssize_t ds1685_rtc_sysfs_battery_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct ds1685_priv *rtc = dev_get_drvdata(dev); + struct ds1685_priv *rtc = dev_get_drvdata(dev->parent); u8 ctrld; ctrld = rtc->read(rtc, RTC_CTRL_D); @@ -1024,7 +1004,7 @@ static ssize_t ds1685_rtc_sysfs_auxbatt_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct ds1685_priv *rtc = dev_get_drvdata(dev); + struct ds1685_priv *rtc = dev_get_drvdata(dev->parent); u8 ctrl4a; ds1685_rtc_switch_to_bank1(rtc); @@ -1046,7 +1026,7 @@ static ssize_t ds1685_rtc_sysfs_serial_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct ds1685_priv *rtc = dev_get_drvdata(dev); + struct ds1685_priv *rtc = dev_get_drvdata(dev->parent); u8 ssn[8]; ds1685_rtc_switch_to_bank1(rtc); @@ -1057,7 +1037,7 @@ ds1685_rtc_sysfs_serial_show(struct device *dev, } static DEVICE_ATTR(serial, S_IRUGO, ds1685_rtc_sysfs_serial_show, NULL); -/** +/* * struct ds1685_rtc_sysfs_misc_attrs - list for misc RTC features. */ static struct attribute* @@ -1068,7 +1048,7 @@ ds1685_rtc_sysfs_misc_attrs[] = { NULL, }; -/** +/* * struct ds1685_rtc_sysfs_misc_grp - attr group for misc RTC features. */ static const struct attribute_group @@ -1088,7 +1068,6 @@ static int ds1685_rtc_probe(struct platform_device *pdev) { struct rtc_device *rtc_dev; - struct resource *res; struct ds1685_priv *rtc; struct ds1685_rtc_platform_data *pdata; u8 ctrla, ctrlb, hours; @@ -1111,35 +1090,29 @@ ds1685_rtc_probe(struct platform_device *pdev) if (!rtc) return -ENOMEM; - /* - * Allocate/setup any IORESOURCE_MEM resources, if required. Not all - * platforms put the RTC in an easy-access place. Like the SGI Octane, - * which attaches the RTC to a "ByteBus", hooked to a SuperIO chip - * that sits behind the IOC3 PCI metadevice. - */ - if (pdata->alloc_io_resources) { - /* Get the platform resources. */ - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -ENXIO; - rtc->size = resource_size(res); - - /* Request a memory region. */ - /* XXX: mmio-only for now. */ - if (!devm_request_mem_region(&pdev->dev, res->start, rtc->size, - pdev->name)) - return -EBUSY; - - /* - * Set the base address for the rtc, and ioremap its - * registers. - */ - rtc->baseaddr = res->start; - rtc->regs = devm_ioremap(&pdev->dev, res->start, rtc->size); - if (!rtc->regs) - return -ENOMEM; + /* Setup resources and access functions */ + switch (pdata->access_type) { + case ds1685_reg_direct: + rtc->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(rtc->regs)) + return PTR_ERR(rtc->regs); + rtc->read = ds1685_read; + rtc->write = ds1685_write; + break; + case ds1685_reg_indirect: + rtc->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(rtc->regs)) + return PTR_ERR(rtc->regs); + rtc->data = devm_platform_ioremap_resource(pdev, 1); + if (IS_ERR(rtc->data)) + return PTR_ERR(rtc->data); + rtc->read = ds1685_indirect_read; + rtc->write = ds1685_indirect_write; + break; } - rtc->alloc_io_resources = pdata->alloc_io_resources; + + if (!rtc->read || !rtc->write) + return -ENXIO; /* Get the register step size. */ if (pdata->regstep > 0) @@ -1147,24 +1120,6 @@ ds1685_rtc_probe(struct platform_device *pdev) else rtc->regstep = 1; - /* Platform read function, else default if mmio setup */ - if (pdata->plat_read) - rtc->read = pdata->plat_read; - else - if (pdata->alloc_io_resources) - rtc->read = ds1685_read; - else - return -ENXIO; - - /* Platform write function, else default if mmio setup */ - if (pdata->plat_write) - rtc->write = pdata->plat_write; - else - if (pdata->alloc_io_resources) - rtc->write = ds1685_write; - else - return -ENXIO; - /* Platform pre-shutdown function, if defined. */ if (pdata->plat_prepare_poweroff) rtc->prepare_poweroff = pdata->plat_prepare_poweroff; @@ -1177,9 +1132,7 @@ ds1685_rtc_probe(struct platform_device *pdev) if (pdata->plat_post_ram_clear) rtc->post_ram_clear = pdata->plat_post_ram_clear; - /* Init the spinlock, workqueue, & set the driver data. */ - spin_lock_init(&rtc->lock); - INIT_WORK(&rtc->work, ds1685_rtc_work_queue); + /* set the driver data. */ platform_set_drvdata(pdev, rtc); /* Turn the oscillator on if is not already on (DV1 = 1). */ @@ -1320,8 +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; - rtc->uie_unsupported = pdata->uie_unsupported; + clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc_dev->features); rtc->dev = rtc_dev; @@ -1333,26 +1285,23 @@ 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) { - rtc->irq_num = ret; - - /* Request an IRQ. */ - ret = devm_request_irq(&pdev->dev, rtc->irq_num, - ds1685_rtc_irq_handler, - IRQF_SHARED, pdev->name, pdev); - - /* Check to see if something came back. */ - if (unlikely(ret)) { - dev_warn(&pdev->dev, - "RTC interrupt not available\n"); - rtc->irq_num = 0; - } - } else - return 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, + IRQF_SHARED | IRQF_ONESHOT, + pdev->name, pdev); + + /* Check to see if something came back. */ + if (unlikely(ret)) { + dev_warn(&pdev->dev, + "RTC interrupt not available\n"); + rtc->irq_num = 0; + } } - rtc->no_irq = pdata->no_irq; /* Setup complete. */ ds1685_rtc_switch_to_bank0(rtc); @@ -1361,20 +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); @@ -1396,13 +1344,9 @@ 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))); - - cancel_work_sync(&rtc->work); - - return 0; } -/** +/* * ds1685_rtc_driver - rtc driver properties. */ static struct platform_driver ds1685_rtc_driver = { @@ -1444,7 +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. */ @@ -1488,11 +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"); |