diff options
Diffstat (limited to 'drivers/rtc')
39 files changed, 835 insertions, 373 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 18639e0cb6e2..e215f50794b6 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -5,6 +5,10 @@ config RTC_LIB bool +config RTC_MC146818_LIB + bool + select RTC_LIB + menuconfig RTC_CLASS bool "Real Time Clock" default n @@ -574,10 +578,10 @@ config RTC_DRV_EM3027 will be called rtc-em3027. config RTC_DRV_RV8803 - tristate "Micro Crystal RV8803" + tristate "Micro Crystal RV8803, Epson RX8900" help - If you say yes here you get support for the Micro Crystal - RV8803 RTC chips. + If you say yes here you get support for the Micro Crystal RV8803 and + Epson RX8900 RTC chips. This driver can also be built as a module. If so, the module will be called rtc-rv8803. @@ -670,6 +674,18 @@ config RTC_DRV_DS1390 This driver can also be built as a module. If so, the module will be called rtc-ds1390. +config RTC_DRV_MAX6916 + tristate "Maxim MAX6916" + help + If you say yes here you will get support for the + Maxim MAX6916 SPI RTC chip. + + This driver only supports the RTC feature, and not other chip + features such as alarms. + + This driver can also be built as a module. If so, the module + will be called rtc-max6916. + config RTC_DRV_R9701 tristate "Epson RTC-9701JE" help @@ -795,8 +811,9 @@ comment "Platform RTC drivers" config RTC_DRV_CMOS tristate "PC-style 'CMOS'" - depends on X86 || ARM || M32R || PPC || MIPS || SPARC64 + depends on X86 || ARM || M32R || PPC || MIPS || SPARC64 || MN10300 default y if X86 + select RTC_MC146818_LIB help Say "yes" here to get direct support for the real time clock found in every PC or ACPI-based system, and some other boards. @@ -815,6 +832,7 @@ config RTC_DRV_CMOS config RTC_DRV_ALPHA bool "Alpha PC-style CMOS" depends on ALPHA + select RTC_MC146818_LIB default y help Direct support for the real-time clock found on every Alpha diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index ea2833723fa9..7cf7ad559c79 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_RTC_LIB) += rtc-lib.o obj-$(CONFIG_RTC_HCTOSYS) += hctosys.o obj-$(CONFIG_RTC_SYSTOHC) += systohc.o obj-$(CONFIG_RTC_CLASS) += rtc-core.o +obj-$(CONFIG_RTC_MC146818_LIB) += rtc-mc146818-lib.o rtc-core-y := class.o interface.o ifdef CONFIG_RTC_DRV_EFI @@ -85,6 +86,7 @@ obj-$(CONFIG_RTC_DRV_M48T59) += rtc-m48t59.o obj-$(CONFIG_RTC_DRV_M48T86) += rtc-m48t86.o obj-$(CONFIG_RTC_DRV_MAX6900) += rtc-max6900.o obj-$(CONFIG_RTC_DRV_MAX6902) += rtc-max6902.o +obj-$(CONFIG_RTC_DRV_MAX6916) += rtc-max6916.o obj-$(CONFIG_RTC_DRV_MAX77686) += rtc-max77686.o obj-$(CONFIG_RTC_DRV_MAX8907) += rtc-max8907.o obj-$(CONFIG_RTC_DRV_MAX8925) += rtc-max8925.o diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c index 9ef5f6f89f98..84a52db9b05f 100644 --- a/drivers/rtc/interface.c +++ b/drivers/rtc/interface.c @@ -104,7 +104,17 @@ static int rtc_read_alarm_internal(struct rtc_device *rtc, struct rtc_wkalrm *al else if (!rtc->ops->read_alarm) err = -EINVAL; else { - memset(alarm, 0, sizeof(struct rtc_wkalrm)); + alarm->enabled = 0; + alarm->pending = 0; + alarm->time.tm_sec = -1; + alarm->time.tm_min = -1; + alarm->time.tm_hour = -1; + alarm->time.tm_mday = -1; + alarm->time.tm_mon = -1; + alarm->time.tm_year = -1; + alarm->time.tm_wday = -1; + alarm->time.tm_yday = -1; + alarm->time.tm_isdst = -1; err = rtc->ops->read_alarm(rtc->dev.parent, alarm); } @@ -383,7 +393,7 @@ int rtc_initialize_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) rtc->aie_timer.node.expires = rtc_tm_to_ktime(alarm->time); rtc->aie_timer.period = ktime_set(0, 0); - /* Alarm has to be enabled & in the futrure for us to enqueue it */ + /* Alarm has to be enabled & in the future for us to enqueue it */ if (alarm->enabled && (rtc_tm_to_ktime(now).tv64 < rtc->aie_timer.node.expires.tv64)) { @@ -395,8 +405,6 @@ int rtc_initialize_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) } EXPORT_SYMBOL_GPL(rtc_initialize_alarm); - - int rtc_alarm_irq_enable(struct rtc_device *rtc, unsigned int enabled) { int err = mutex_lock_interruptible(&rtc->ops_lock); @@ -748,9 +756,23 @@ EXPORT_SYMBOL_GPL(rtc_irq_set_freq); */ static int rtc_timer_enqueue(struct rtc_device *rtc, struct rtc_timer *timer) { + struct timerqueue_node *next = timerqueue_getnext(&rtc->timerqueue); + struct rtc_time tm; + ktime_t now; + timer->enabled = 1; + __rtc_read_time(rtc, &tm); + now = rtc_tm_to_ktime(tm); + + /* Skip over expired timers */ + while (next) { + if (next->expires.tv64 >= now.tv64) + break; + next = timerqueue_iterate_next(next); + } + timerqueue_add(&rtc->timerqueue, &timer->node); - if (&timer->node == timerqueue_getnext(&rtc->timerqueue)) { + if (!next) { struct rtc_wkalrm alarm; int err; alarm.time = rtc_ktime_to_tm(timer->node.expires); diff --git a/drivers/rtc/rtc-abx80x.c b/drivers/rtc/rtc-abx80x.c index ba0d61934d35..fea9a60b06cf 100644 --- a/drivers/rtc/rtc-abx80x.c +++ b/drivers/rtc/rtc-abx80x.c @@ -643,17 +643,15 @@ static int abx80x_probe(struct i2c_client *client, return err; } - err = devm_add_action(&client->dev, rtc_calib_remove_sysfs_group, - &client->dev); - if (err) { - rtc_calib_remove_sysfs_group(&client->dev); + err = devm_add_action_or_reset(&client->dev, + rtc_calib_remove_sysfs_group, + &client->dev); + if (err) dev_err(&client->dev, "Failed to add sysfs cleanup action: %d\n", err); - return err; - } - return 0; + return err; } static int abx80x_remove(struct i2c_client *client) diff --git a/drivers/rtc/rtc-asm9260.c b/drivers/rtc/rtc-asm9260.c index 355fdb97a006..5219916ce11d 100644 --- a/drivers/rtc/rtc-asm9260.c +++ b/drivers/rtc/rtc-asm9260.c @@ -343,7 +343,6 @@ static struct platform_driver asm9260_rtc_driver = { .remove = asm9260_rtc_remove, .driver = { .name = "asm9260-rtc", - .owner = THIS_MODULE, .of_match_table = asm9260_dt_ids, }, }; diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c index 99732e6f8c3b..7418a763ce52 100644 --- a/drivers/rtc/rtc-at91sam9.c +++ b/drivers/rtc/rtc-at91sam9.c @@ -375,6 +375,7 @@ static int at91_rtc_probe(struct platform_device *pdev) if (!rtc) return -ENOMEM; + spin_lock_init(&rtc->lock); rtc->irq = irq; /* platform setup code should have handled this; sigh */ diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c index fbe9c72438e1..43745cac0141 100644 --- a/drivers/rtc/rtc-cmos.c +++ b/drivers/rtc/rtc-cmos.c @@ -43,7 +43,7 @@ #include <linux/of_platform.h> /* this is for "generic access to PC-style RTC" using CMOS_READ/CMOS_WRITE */ -#include <asm-generic/rtc.h> +#include <linux/mc146818rtc.h> struct cmos_rtc { struct rtc_device *rtc; @@ -190,10 +190,10 @@ static inline void cmos_write_bank2(unsigned char val, unsigned char addr) static int cmos_read_time(struct device *dev, struct rtc_time *t) { /* REVISIT: if the clock has a "century" register, use - * that instead of the heuristic in get_rtc_time(). + * that instead of the heuristic in mc146818_get_time(). * That'll make Y3K compatility (year > 2070) easy! */ - get_rtc_time(t); + mc146818_get_time(t); return 0; } @@ -205,7 +205,7 @@ static int cmos_set_time(struct device *dev, struct rtc_time *t) * takes effect exactly 500ms after we write the register. * (Also queueing and other delays before we get this far.) */ - return set_rtc_time(t); + return mc146818_set_time(t); } static int cmos_read_alarm(struct device *dev, struct rtc_wkalrm *t) @@ -220,8 +220,6 @@ static int cmos_read_alarm(struct device *dev, struct rtc_wkalrm *t) * Some also support day and month, for alarms up to a year in * the future. */ - t->time.tm_mday = -1; - t->time.tm_mon = -1; spin_lock_irq(&rtc_lock); t->time.tm_sec = CMOS_READ(RTC_SECONDS_ALARM); @@ -272,7 +270,6 @@ static int cmos_read_alarm(struct device *dev, struct rtc_wkalrm *t) } } } - t->time.tm_year = -1; t->enabled = !!(rtc_control & RTC_AIE); t->pending = 0; @@ -630,7 +627,7 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq) address_space = 64; #elif defined(__i386__) || defined(__x86_64__) || defined(__arm__) \ || defined(__sparc__) || defined(__mips__) \ - || defined(__powerpc__) + || defined(__powerpc__) || defined(CONFIG_MN10300) address_space = 128; #else #warning Assuming 128 bytes of RTC+NVRAM address space, not 64 bytes. @@ -1142,14 +1139,14 @@ static __init void cmos_of_init(struct platform_device *pdev) if (val) CMOS_WRITE(be32_to_cpup(val), RTC_FREQ_SELECT); - get_rtc_time(&time); + cmos_read_time(&pdev->dev, &time); ret = rtc_valid_tm(&time); if (ret) { struct rtc_time def_time = { .tm_year = 1, .tm_mday = 1, }; - set_rtc_time(&def_time); + cmos_set_time(&pdev->dev, &def_time); } } #else diff --git a/drivers/rtc/rtc-da9052.c b/drivers/rtc/rtc-da9052.c index a20bcf0e33cd..4273377562ec 100644 --- a/drivers/rtc/rtc-da9052.c +++ b/drivers/rtc/rtc-da9052.c @@ -85,6 +85,7 @@ static int da9052_read_alarm(struct da9052_rtc *rtc, struct rtc_time *rtc_tm) rtc_tm->tm_mday = v[0][2] & DA9052_RTC_DAY; rtc_tm->tm_hour = v[0][1] & DA9052_RTC_HOUR; rtc_tm->tm_min = v[0][0] & DA9052_RTC_MIN; + rtc_tm->tm_sec = 0; ret = rtc_valid_tm(rtc_tm); return ret; diff --git a/drivers/rtc/rtc-da9055.c b/drivers/rtc/rtc-da9055.c index 7ec0872d5e3b..678af8648c45 100644 --- a/drivers/rtc/rtc-da9055.c +++ b/drivers/rtc/rtc-da9055.c @@ -74,6 +74,7 @@ static int da9055_read_alarm(struct da9055 *da9055, struct rtc_time *rtc_tm) rtc_tm->tm_mday = v[2] & DA9055_RTC_ALM_DAY; rtc_tm->tm_hour = v[1] & DA9055_RTC_ALM_HOUR; rtc_tm->tm_min = v[0] & DA9055_RTC_ALM_MIN; + rtc_tm->tm_sec = 0; return rtc_valid_tm(rtc_tm); } diff --git a/drivers/rtc/rtc-davinci.c b/drivers/rtc/rtc-davinci.c index c5432bf64e1c..dba60c1dfce2 100644 --- a/drivers/rtc/rtc-davinci.c +++ b/drivers/rtc/rtc-davinci.c @@ -388,6 +388,8 @@ static int davinci_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) u8 day0, day1; unsigned long flags; + alm->time.tm_sec = 0; + spin_lock_irqsave(&davinci_rtc_lock, flags); davinci_rtcss_calendar_wait(davinci_rtc); diff --git a/drivers/rtc/rtc-ds1286.c b/drivers/rtc/rtc-ds1286.c index 756e509f6ed2..ef75c349dff9 100644 --- a/drivers/rtc/rtc-ds1286.c +++ b/drivers/rtc/rtc-ds1286.c @@ -16,7 +16,7 @@ #include <linux/rtc.h> #include <linux/platform_device.h> #include <linux/bcd.h> -#include <linux/ds1286.h> +#include <linux/rtc/ds1286.h> #include <linux/io.h> #include <linux/slab.h> diff --git a/drivers/rtc/rtc-ds1305.c b/drivers/rtc/rtc-ds1305.c index 8e41c4613e51..72b22935eb62 100644 --- a/drivers/rtc/rtc-ds1305.c +++ b/drivers/rtc/rtc-ds1305.c @@ -313,13 +313,6 @@ static int ds1305_get_alarm(struct device *dev, struct rtc_wkalrm *alm) alm->time.tm_sec = bcd2bin(buf[DS1305_SEC]); alm->time.tm_min = bcd2bin(buf[DS1305_MIN]); alm->time.tm_hour = bcd2hour(buf[DS1305_HOUR]); - alm->time.tm_mday = -1; - alm->time.tm_mon = -1; - alm->time.tm_year = -1; - /* next three fields are unused by Linux */ - alm->time.tm_wday = -1; - alm->time.tm_mday = -1; - alm->time.tm_isdst = -1; return 0; } diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c index 821d9c089cdb..8e1c5cb6ece6 100644 --- a/drivers/rtc/rtc-ds1307.c +++ b/drivers/rtc/rtc-ds1307.c @@ -482,11 +482,6 @@ static int ds1337_read_alarm(struct device *dev, struct rtc_wkalrm *t) t->time.tm_min = bcd2bin(ds1307->regs[1] & 0x7f); t->time.tm_hour = bcd2bin(ds1307->regs[2] & 0x3f); t->time.tm_mday = bcd2bin(ds1307->regs[3] & 0x3f); - t->time.tm_mon = -1; - t->time.tm_year = -1; - t->time.tm_wday = -1; - t->time.tm_yday = -1; - t->time.tm_isdst = -1; /* ... and status */ t->enabled = !!(ds1307->regs[7] & DS1337_BIT_A1IE); @@ -602,6 +597,8 @@ static const struct rtc_class_ops ds13xx_rtc_ops = { * Alarm support for mcp794xx devices. */ +#define MCP794XX_REG_WEEKDAY 0x3 +#define MCP794XX_REG_WEEKDAY_WDAY_MASK 0x7 #define MCP794XX_REG_CONTROL 0x07 # define MCP794XX_BIT_ALM0_EN 0x10 # define MCP794XX_BIT_ALM1_EN 0x20 @@ -1231,13 +1228,16 @@ static int ds1307_probe(struct i2c_client *client, { struct ds1307 *ds1307; int err = -ENODEV; - int tmp; + int tmp, wday; struct chip_desc *chip = &chips[id->driver_data]; struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); bool want_irq = false; bool ds1307_can_wakeup_device = false; unsigned char *buf; struct ds1307_platform_data *pdata = dev_get_platdata(&client->dev); + struct rtc_time tm; + unsigned long timestamp; + irq_handler_t irq_handler = ds1307_irq; static const int bbsqi_bitpos[] = { @@ -1526,6 +1526,27 @@ read_rtc: bin2bcd(tmp)); } + /* + * Some IPs have weekday reset value = 0x1 which might not correct + * hence compute the wday using the current date/month/year values + */ + ds1307_get_time(&client->dev, &tm); + wday = tm.tm_wday; + timestamp = rtc_tm_to_time64(&tm); + rtc_time64_to_tm(timestamp, &tm); + + /* + * Check if reset wday is different from the computed wday + * If different then set the wday which we computed using + * timestamp + */ + if (wday != tm.tm_wday) { + wday = i2c_smbus_read_byte_data(client, MCP794XX_REG_WEEKDAY); + wday = wday & ~MCP794XX_REG_WEEKDAY_WDAY_MASK; + wday = wday | (tm.tm_wday + 1); + i2c_smbus_write_byte_data(client, MCP794XX_REG_WEEKDAY, wday); + } + if (want_irq) { device_set_wakeup_capable(&client->dev, true); set_bit(HAS_ALARM, &ds1307->flags); diff --git a/drivers/rtc/rtc-ds1343.c b/drivers/rtc/rtc-ds1343.c index 23fa9f0cb5e3..895fbeeb47fe 100644 --- a/drivers/rtc/rtc-ds1343.c +++ b/drivers/rtc/rtc-ds1343.c @@ -504,12 +504,6 @@ static int ds1343_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) alarm->time.tm_hour = priv->alarm_hour < 0 ? 0 : priv->alarm_hour; alarm->time.tm_mday = priv->alarm_mday < 0 ? 0 : priv->alarm_mday; - alarm->time.tm_mon = -1; - alarm->time.tm_year = -1; - alarm->time.tm_wday = -1; - alarm->time.tm_yday = -1; - alarm->time.tm_isdst = -1; - out: mutex_unlock(&priv->mutex); return res; diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c index b3ce3c652fcd..ed43b4311660 100644 --- a/drivers/rtc/rtc-ds1685.c +++ b/drivers/rtc/rtc-ds1685.c @@ -103,6 +103,26 @@ 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. + * @rtc: pointer to the ds1685 rtc structure. + * @mday: day of month. + * + * Returns -EDOM if the day of month is not within 1..31 range. + */ +static inline int +ds1685_rtc_check_mday(struct ds1685_priv *rtc, u8 mday) +{ + if (rtc->bcd_mode) { + if (mday < 0x01 || mday > 0x31 || (mday & 0x0f) > 0x09) + return -EDOM; + } else { + if (mday < 1 || mday > 31) + return -EDOM; + } + return 0; +} + +/** * ds1685_rtc_switch_to_bank0 - switch the rtc to bank 0. * @rtc: pointer to the ds1685 rtc structure. */ @@ -377,6 +397,7 @@ ds1685_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) struct platform_device *pdev = to_platform_device(dev); struct ds1685_priv *rtc = platform_get_drvdata(pdev); u8 seconds, minutes, hours, mday, ctrlb, ctrlc; + int ret; /* Fetch the alarm info from the RTC alarm registers. */ ds1685_rtc_begin_data_access(rtc); @@ -388,34 +409,29 @@ ds1685_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) ctrlc = rtc->read(rtc, RTC_CTRL_C); ds1685_rtc_end_data_access(rtc); - /* Check month date. */ - if (!(mday >= 1) && (mday <= 31)) - return -EDOM; + /* Check the month date for validity. */ + ret = ds1685_rtc_check_mday(rtc, mday); + if (ret) + return ret; /* * Check the three alarm bytes. * * The Linux RTC system doesn't support the "don't care" capability * of this RTC chip. We check for it anyways in case support is - * added in the future. + * added in the future and only assign when we care. */ - if (unlikely(seconds >= 0xc0)) - alrm->time.tm_sec = -1; - else + if (likely(seconds < 0xc0)) alrm->time.tm_sec = ds1685_rtc_bcd2bin(rtc, seconds, RTC_SECS_BCD_MASK, RTC_SECS_BIN_MASK); - if (unlikely(minutes >= 0xc0)) - alrm->time.tm_min = -1; - else + if (likely(minutes < 0xc0)) alrm->time.tm_min = ds1685_rtc_bcd2bin(rtc, minutes, RTC_MINS_BCD_MASK, RTC_MINS_BIN_MASK); - if (unlikely(hours >= 0xc0)) - alrm->time.tm_hour = -1; - else + if (likely(hours < 0xc0)) alrm->time.tm_hour = ds1685_rtc_bcd2bin(rtc, hours, RTC_HRS_24_BCD_MASK, RTC_HRS_24_BIN_MASK); @@ -423,11 +439,6 @@ ds1685_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) /* Write the data to rtc_wkalrm. */ alrm->time.tm_mday = ds1685_rtc_bcd2bin(rtc, mday, RTC_MDAY_BCD_MASK, RTC_MDAY_BIN_MASK); - alrm->time.tm_mon = -1; - alrm->time.tm_year = -1; - alrm->time.tm_wday = -1; - alrm->time.tm_yday = -1; - alrm->time.tm_isdst = -1; alrm->enabled = !!(ctrlb & RTC_CTRL_B_AIE); alrm->pending = !!(ctrlc & RTC_CTRL_C_AF); @@ -445,6 +456,7 @@ ds1685_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) struct platform_device *pdev = to_platform_device(dev); struct ds1685_priv *rtc = platform_get_drvdata(pdev); u8 ctrlb, seconds, minutes, hours, mday; + int ret; /* Fetch the alarm info and convert to BCD. */ seconds = ds1685_rtc_bin2bcd(rtc, alrm->time.tm_sec, @@ -461,8 +473,9 @@ ds1685_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) RTC_MDAY_BCD_MASK); /* Check the month date for validity. */ - if (!(mday >= 1) && (mday <= 31)) - return -EDOM; + ret = ds1685_rtc_check_mday(rtc, mday); + if (ret) + return ret; /* * Check the three alarm bytes. diff --git a/drivers/rtc/rtc-ds2404.c b/drivers/rtc/rtc-ds2404.c index 16310fe79d76..9a1582ed7070 100644 --- a/drivers/rtc/rtc-ds2404.c +++ b/drivers/rtc/rtc-ds2404.c @@ -13,7 +13,7 @@ #include <linux/rtc.h> #include <linux/types.h> #include <linux/bcd.h> -#include <linux/rtc-ds2404.h> +#include <linux/platform_data/rtc-ds2404.h> #include <linux/delay.h> #include <linux/gpio.h> #include <linux/slab.h> diff --git a/drivers/rtc/rtc-ds3232.c b/drivers/rtc/rtc-ds3232.c index 04fbd7fffd0d..b1f20d8c358f 100644 --- a/drivers/rtc/rtc-ds3232.c +++ b/drivers/rtc/rtc-ds3232.c @@ -197,12 +197,6 @@ static int ds3232_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) alarm->time.tm_hour = bcd2bin(buf[2] & 0x7F); alarm->time.tm_mday = bcd2bin(buf[3] & 0x7F); - alarm->time.tm_mon = -1; - alarm->time.tm_year = -1; - alarm->time.tm_wday = -1; - alarm->time.tm_yday = -1; - alarm->time.tm_isdst = -1; - alarm->enabled = !!(control & DS3232_REG_CR_A1IE); alarm->pending = !!(stat & DS3232_REG_SR_A1F); diff --git a/drivers/rtc/rtc-efi.c b/drivers/rtc/rtc-efi.c index 96d38609d803..0130afd7fe88 100644 --- a/drivers/rtc/rtc-efi.c +++ b/drivers/rtc/rtc-efi.c @@ -259,6 +259,12 @@ static const struct rtc_class_ops efi_rtc_ops = { static int __init efi_rtc_probe(struct platform_device *dev) { struct rtc_device *rtc; + efi_time_t eft; + efi_time_cap_t cap; + + /* First check if the RTC is usable */ + if (efi.get_time(&eft, &cap) != EFI_SUCCESS) + return -ENODEV; rtc = devm_rtc_device_register(&dev->dev, "rtc-efi", &efi_rtc_ops, THIS_MODULE); diff --git a/drivers/rtc/rtc-generic.c b/drivers/rtc/rtc-generic.c index d726c6aa96a8..1bf5d2347928 100644 --- a/drivers/rtc/rtc-generic.c +++ b/drivers/rtc/rtc-generic.c @@ -9,44 +9,10 @@ #include <linux/platform_device.h> #include <linux/rtc.h> -#if defined(CONFIG_M68K) || defined(CONFIG_PARISC) || \ - defined(CONFIG_PPC) || defined(CONFIG_SUPERH32) -#include <asm/rtc.h> - -static int generic_get_time(struct device *dev, struct rtc_time *tm) -{ - unsigned int ret = get_rtc_time(tm); - - if (ret & RTC_BATT_BAD) - return -EOPNOTSUPP; - - return rtc_valid_tm(tm); -} - -static int generic_set_time(struct device *dev, struct rtc_time *tm) -{ - if (set_rtc_time(tm) < 0) - return -EOPNOTSUPP; - - return 0; -} - -static const struct rtc_class_ops generic_rtc_ops = { - .read_time = generic_get_time, - .set_time = generic_set_time, -}; -#else -#define generic_rtc_ops *(struct rtc_class_ops*)NULL -#endif - static int __init generic_rtc_probe(struct platform_device *dev) { struct rtc_device *rtc; - const struct rtc_class_ops *ops; - - ops = dev_get_platdata(&dev->dev); - if (!ops) - ops = &generic_rtc_ops; + const struct rtc_class_ops *ops = dev_get_platdata(&dev->dev); rtc = devm_rtc_device_register(&dev->dev, "rtc-generic", ops, THIS_MODULE); diff --git a/drivers/rtc/rtc-hym8563.c b/drivers/rtc/rtc-hym8563.c index 207270376b55..e5ad527cb75e 100644 --- a/drivers/rtc/rtc-hym8563.c +++ b/drivers/rtc/rtc-hym8563.c @@ -198,7 +198,7 @@ static int hym8563_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) return ret; /* The alarm only has a minute accuracy */ - alm_tm->tm_sec = -1; + alm_tm->tm_sec = 0; alm_tm->tm_min = (buf[0] & HYM8563_ALM_BIT_DISABLE) ? -1 : @@ -213,9 +213,6 @@ static int hym8563_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) -1 : bcd2bin(buf[3] & HYM8563_WEEKDAY_MASK); - alm_tm->tm_mon = -1; - alm_tm->tm_year = -1; - ret = i2c_smbus_read_byte_data(client, HYM8563_CTL2); if (ret < 0) return ret; diff --git a/drivers/rtc/rtc-isl12057.c b/drivers/rtc/rtc-isl12057.c index 54328d4ac0d3..0e7f0f52bfe4 100644 --- a/drivers/rtc/rtc-isl12057.c +++ b/drivers/rtc/rtc-isl12057.c @@ -245,8 +245,7 @@ static int isl12057_rtc_update_alarm(struct device *dev, int enable) static int isl12057_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) { struct isl12057_rtc_data *data = dev_get_drvdata(dev); - struct rtc_time rtc_tm, *alarm_tm = &alarm->time; - unsigned long rtc_secs, alarm_secs; + struct rtc_time *alarm_tm = &alarm->time; u8 regs[ISL12057_A1_SEC_LEN]; unsigned int ir; int ret; @@ -264,36 +263,6 @@ static int isl12057_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) alarm_tm->tm_min = bcd2bin(regs[1] & 0x7f); alarm_tm->tm_hour = bcd2bin(regs[2] & 0x3f); alarm_tm->tm_mday = bcd2bin(regs[3] & 0x3f); - alarm_tm->tm_wday = -1; - - /* - * The alarm section does not store year/month. We use the ones in rtc - * section as a basis and increment month and then year if needed to get - * alarm after current time. - */ - ret = _isl12057_rtc_read_time(dev, &rtc_tm); - if (ret) - goto err_unlock; - - alarm_tm->tm_year = rtc_tm.tm_year; - alarm_tm->tm_mon = rtc_tm.tm_mon; - - ret = rtc_tm_to_time(&rtc_tm, &rtc_secs); - if (ret) - goto err_unlock; - - ret = rtc_tm_to_time(alarm_tm, &alarm_secs); - if (ret) - goto err_unlock; - - if (alarm_secs < rtc_secs) { - if (alarm_tm->tm_mon == 11) { - alarm_tm->tm_mon = 0; - alarm_tm->tm_year += 1; - } else { - alarm_tm->tm_mon += 1; - } - } ret = regmap_read(data->regmap, ISL12057_REG_INT, &ir); if (ret) { diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c index d1bf93a87200..58698d21c2c3 100644 --- a/drivers/rtc/rtc-m41t80.c +++ b/drivers/rtc/rtc-m41t80.c @@ -244,7 +244,7 @@ static int m41t80_alarm_irq_enable(struct device *dev, unsigned int enabled) retval = i2c_smbus_write_byte_data(client, M41T80_REG_ALARM_MON, flags); if (retval |