Commit 8b70f716 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'rtc-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "RTC for 4.9

  Subsystem:
   - delete owner assignment in multiple drivers
   - constify rtc_class_ops structures

  Drivers:
   - ac100: support clock-output-names
   - cmos: properly handle ACPI alarms and quirky BIOSes and other fixes
   - ds1307: fix century bit support while staying comaptible with
     previous behaviour by default
   - ds1347: switch to regmap
   - isl12057 is now handled by ds1307
   - omap: support external wakeup
   - rv8803: allow to disable voltage drop detection"

* tag 'rtc-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (25 commits)
  rtc: rv8803: set VDETOFF and SWOFF via device tree
  dt/bindings: Add bindings for Micro Crystal rv8803
  devicetree: Add Micro Crystal AG vendor id
  rtc: cmos: avoid unused function warning
  rtc: ac100: Add NULL checking for devm_kzalloc call
  rtc: ds1347: changed raw spi calls to register map calls
  rtc: cmos: Restore alarm after resume
  rtc: cmos: Clear ACPI-driven alarms upon resume
  rtc: omap: Support ext_wakeup configuration
  rtc: cmos: Initialize hpet timer before irq is registered
  rtc: asm9260: rework locking
  rtc: asm9260: allow COMPILE_TEST
  rtc: constify rtc_class_ops structures
  rtc: ac100: support clock-output-names in device tree binding
  rtc: rx6110: remove owner assignment
  rtc: pic32: Delete owner assignment
  rtc: bq32k: Fix handling of oscillator failure flag
  rtc: bq32k: Use correct mask name for 'minutes' register.
  rtc: sysfs: fix a cast removing the const attribute
  Documentation: dt: Intersil isl12057 is not a trivial device
  ...
parents e5050143 1cd71376
......@@ -51,7 +51,6 @@ fsl,sgtl5000 SGTL5000: Ultra Low-Power Audio Codec
gmt,g751 G751: Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface
infineon,slb9635tt Infineon SLB9635 (Soft-) I2C TPM (old protocol, max 100khz)
infineon,slb9645tt Infineon SLB9645 I2C TPM (new protocol, max 400khz)
isil,isl12057 Intersil ISL12057 I2C RTC Chip
isil,isl29028 Intersil ISL29028 Ambient Light and Proximity Sensor
maxim,ds1050 5 Bit Programmable, Pulse-Width Modulator
maxim,max1237 Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs
......
......@@ -11,7 +11,7 @@ Optional properties:
- trickle-diode-disable : Do not use internal trickle charger diode
Should be given if internal trickle charger diode should be disabled
Example:
ds1390: rtc@68 {
ds1390: rtc@0 {
compatible = "dallas,ds1390";
trickle-resistor-ohms = <250>;
reg = <0>;
......
Real Time Clock driver for:
- Epson RX8900
- Micro Crystal rv8803
Required properties:
- compatible: should be: "microcrystal,rv8803" or "epson,rx8900"
- reg : the I2C address of the device for I2C
Optional properties:
- epson,vdet-disable : boolean, if present will disable voltage detector.
Should be set if no backup battery is used.
- trickle-diode-disable : boolean, if present will disable internal trickle
charger diode
Example:
rtc: rtc@32 {
compatible = "epson,rx8900"
reg = <0x32>;
epson,vdet-disable;
trickle-diode-disable;
};
......@@ -18,6 +18,18 @@ Optional properties:
through pmic_power_en
- clocks: Any internal or external clocks feeding in to rtc
- clock-names: Corresponding names of the clocks
- pinctrl-0: a phandle pointing to the pin settings for the device
- pinctrl-names: should be "default"
Optional subnodes:
- generic pinctrl node
Required pinctrl subnodes properties:
- pins - Names of ext_wakeup pins to configure
Optional pinctrl subnodes properties:
- input-enable - Enables ext_wakeup
- ti,active-high - Set input active high (by default active low)
Example:
......@@ -30,4 +42,13 @@ rtc@1c23000 {
system-power-controller;
clocks = <&clk_32k_rtc>, <&clk_32768_ck>;
clock-names = "ext-clk", "int-clk";
pinctrl-0 = <&ext_wakeup>;
pinctrl-names = "default";
ext_wakeup: ext-wakeup {
pins = "ext_wakeup0";
input-enable;
ti,active-high;
};
};
......@@ -166,6 +166,7 @@ melexis Melexis N.V.
merrii Merrii Technology Co., Ltd.
micrel Micrel Inc.
microchip Microchip Technology Inc.
microcrystal Micro Crystal AG
micron Micron Technology Inc.
minix MINIX Technology Ltd.
mitsubishi Mitsubishi Electric Corporation
......
......@@ -208,14 +208,14 @@ config RTC_DRV_AS3722
will be called rtc-as3722.
config RTC_DRV_DS1307
tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025"
tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025, ISL12057"
help
If you say yes here you get support for various compatible RTC
chips (often with battery backup) connected with I2C. This driver
should handle DS1307, DS1337, DS1338, DS1339, DS1340, ST M41T00,
EPSON RX-8025 and probably other chips. In some cases the RTC
must already have been initialized (by manufacturing or a
bootloader).
EPSON RX-8025, Intersil ISL12057 and probably other chips. In some
cases the RTC must already have been initialized (by manufacturing or
a bootloader).
The first seven registers on these chips hold an RTC, and other
registers may add features such as NVRAM, a trickle charger for
......@@ -234,6 +234,20 @@ config RTC_DRV_DS1307_HWMON
Say Y here if you want to expose temperature sensor data on
rtc-ds1307 (only DS3231)
config RTC_DRV_DS1307_CENTURY
bool "Century bit support for rtc-ds1307"
depends on RTC_DRV_DS1307
default n
help
The DS1307 driver suffered from a bug where it was enabling the
century bit inconditionnally but never used it when reading the time.
It made the driver unable to support dates beyond 2099.
Setting this option will add proper support for the century bit but if
the time was previously set using a kernel predating this option,
reading the date will return a date in the next century.
To solve that, you could boot a kernel without this option set, set
the RTC date and then boot a kernel with this option set.
config RTC_DRV_DS1374
tristate "Dallas/Maxim DS1374"
help
......@@ -374,16 +388,6 @@ config RTC_DRV_ISL12022
This driver can also be built as a module. If so, the module
will be called rtc-isl12022.
config RTC_DRV_ISL12057
select REGMAP_I2C
tristate "Intersil ISL12057"
help
If you say yes here you get support for the Intersil ISL12057
I2C RTC chip.
This driver can also be built as a module. If so, the module
will be called rtc-isl12057.
config RTC_DRV_X1205
tristate "Xicor/Intersil X1205"
help
......@@ -661,6 +665,7 @@ config RTC_DRV_DS1343
will be called rtc-ds1343.
config RTC_DRV_DS1347
select REGMAP_SPI
tristate "Dallas/Maxim DS1347"
help
If you say yes here you get support for the
......@@ -1201,7 +1206,7 @@ comment "on-CPU RTC drivers"
config RTC_DRV_ASM9260
tristate "Alphascale asm9260 RTC"
depends on MACH_ASM9260
depends on MACH_ASM9260 || COMPILE_TEST
help
If you say yes here you get support for the RTC on the
Alphascale asm9260 SoC.
......@@ -1241,6 +1246,9 @@ config RTC_DRV_IMXDI
config RTC_DRV_OMAP
tristate "TI OMAP Real Time Clock"
depends on ARCH_OMAP || ARCH_DAVINCI || COMPILE_TEST
depends on OF
depends on PINCTRL
select GENERIC_PINCONF
help
Say "yes" here to support the on chip real time clock
present on TI OMAP1, AM33xx, DA8xx/OMAP-L13x, AM43xx and DRA7xx.
......
......@@ -72,7 +72,6 @@ obj-$(CONFIG_RTC_DRV_HID_SENSOR_TIME) += rtc-hid-sensor-time.o
obj-$(CONFIG_RTC_DRV_HYM8563) += rtc-hym8563.o
obj-$(CONFIG_RTC_DRV_IMXDI) += rtc-imxdi.o
obj-$(CONFIG_RTC_DRV_ISL12022) += rtc-isl12022.o
obj-$(CONFIG_RTC_DRV_ISL12057) += rtc-isl12057.o
obj-$(CONFIG_RTC_DRV_ISL1208) += rtc-isl1208.o
obj-$(CONFIG_RTC_DRV_JZ4740) += rtc-jz4740.o
obj-$(CONFIG_RTC_DRV_LP8788) += rtc-lp8788.o
......
......@@ -327,6 +327,8 @@ static int ac100_rtc_register_clks(struct ac100_rtc_dev *chip)
.flags = 0,
};
of_property_read_string_index(np, "clock-output-names",
i, &init.name);
clk->regmap = chip->regmap;
clk->offset = AC100_CLKOUT_CTRL1 + i;
clk->hw.init = &init;
......@@ -552,6 +554,9 @@ static int ac100_rtc_probe(struct platform_device *pdev)
int ret;
chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
if (!chip)
return -ENOMEM;
platform_set_drvdata(pdev, chip);
chip->dev = &pdev->dev;
chip->regmap = ac100->regmap;
......
......@@ -112,8 +112,6 @@ struct asm9260_rtc_priv {
void __iomem *iobase;
struct rtc_device *rtc;
struct clk *clk;
/* io lock */
spinlock_t lock;
};
static irqreturn_t asm9260_rtc_irq(int irq, void *dev_id)
......@@ -122,11 +120,15 @@ static irqreturn_t asm9260_rtc_irq(int irq, void *dev_id)
u32 isr;
unsigned long events = 0;
mutex_lock(&priv->rtc->ops_lock);
isr = ioread32(priv->iobase + HW_CIIR);
if (!isr)
if (!isr) {
mutex_unlock(&priv->rtc->ops_lock);
return IRQ_NONE;
}
iowrite32(0, priv->iobase + HW_CIIR);
mutex_unlock(&priv->rtc->ops_lock);
events |= RTC_AF | RTC_IRQF;
......@@ -139,9 +141,7 @@ static int asm9260_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
struct asm9260_rtc_priv *priv = dev_get_drvdata(dev);
u32 ctime0, ctime1, ctime2;
unsigned long irq_flags;
spin_lock_irqsave(&priv->lock, irq_flags);
ctime0 = ioread32(priv->iobase + HW_CTIME0);
ctime1 = ioread32(priv->iobase + HW_CTIME1);
ctime2 = ioread32(priv->iobase + HW_CTIME2);
......@@ -155,7 +155,6 @@ static int asm9260_rtc_read_time(struct device *dev, struct rtc_time *tm)
ctime1 = ioread32(priv->iobase + HW_CTIME1);
ctime2 = ioread32(priv->iobase + HW_CTIME2);
}
spin_unlock_irqrestore(&priv->lock, irq_flags);
tm->tm_sec = (ctime0 >> BM_CTIME0_SEC_S) & BM_CTIME0_SEC_M;
tm->tm_min = (ctime0 >> BM_CTIME0_MIN_S) & BM_CTIME0_MIN_M;
......@@ -174,9 +173,7 @@ static int asm9260_rtc_read_time(struct device *dev, struct rtc_time *tm)
static int asm9260_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
struct asm9260_rtc_priv *priv = dev_get_drvdata(dev);
unsigned long irq_flags;
spin_lock_irqsave(&priv->lock, irq_flags);
/*
* make sure SEC counter will not flip other counter on write time,
* real value will be written at the enf of sequence.
......@@ -191,7 +188,6 @@ static int asm9260_rtc_set_time(struct device *dev, struct rtc_time *tm)
iowrite32(tm->tm_hour, priv->iobase + HW_HOUR);
iowrite32(tm->tm_min, priv->iobase + HW_MIN);
iowrite32(tm->tm_sec, priv->iobase + HW_SEC);
spin_unlock_irqrestore(&priv->lock, irq_flags);
return 0;
}
......@@ -199,9 +195,7 @@ static int asm9260_rtc_set_time(struct device *dev, struct rtc_time *tm)
static int asm9260_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct asm9260_rtc_priv *priv = dev_get_drvdata(dev);
unsigned long irq_flags;
spin_lock_irqsave(&priv->lock, irq_flags);
alrm->time.tm_year = ioread32(priv->iobase + HW_ALYEAR);
alrm->time.tm_mon = ioread32(priv->iobase + HW_ALMON);
alrm->time.tm_mday = ioread32(priv->iobase + HW_ALDOM);
......@@ -213,7 +207,6 @@ static int asm9260_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
alrm->enabled = ioread32(priv->iobase + HW_AMR) ? 1 : 0;
alrm->pending = ioread32(priv->iobase + HW_CIIR) ? 1 : 0;
spin_unlock_irqrestore(&priv->lock, irq_flags);
return rtc_valid_tm(&alrm->time);
}
......@@ -221,9 +214,7 @@ static int asm9260_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
static int asm9260_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct asm9260_rtc_priv *priv = dev_get_drvdata(dev);
unsigned long irq_flags;
spin_lock_irqsave(&priv->lock, irq_flags);
iowrite32(alrm->time.tm_year, priv->iobase + HW_ALYEAR);
iowrite32(alrm->time.tm_mon, priv->iobase + HW_ALMON);
iowrite32(alrm->time.tm_mday, priv->iobase + HW_ALDOM);
......@@ -234,7 +225,6 @@ static int asm9260_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
iowrite32(alrm->time.tm_sec, priv->iobase + HW_ALSEC);
iowrite32(alrm->enabled ? 0 : BM_AMR_OFF, priv->iobase + HW_AMR);
spin_unlock_irqrestore(&priv->lock, irq_flags);
return 0;
}
......
......@@ -187,7 +187,7 @@ static irqreturn_t at32_rtc_interrupt(int irq, void *dev_id)
return ret;
}
static struct rtc_class_ops at32_rtc_ops = {
static const struct rtc_class_ops at32_rtc_ops = {
.read_time = at32_rtc_readtime,
.set_time = at32_rtc_settime,
.read_alarm = at32_rtc_readalarm,
......
......@@ -93,8 +93,15 @@ static int bq32k_rtc_read_time(struct device *dev, struct rtc_time *tm)
if (error)
return error;
/*
* In case of oscillator failure, the register contents should be
* considered invalid. The flag is cleared the next time the RTC is set.
*/
if (regs.minutes & BQ32K_OF)
return -EINVAL;
tm->tm_sec = bcd2bin(regs.seconds & BQ32K_SECONDS_MASK);
tm->tm_min = bcd2bin(regs.minutes & BQ32K_SECONDS_MASK);
tm->tm_min = bcd2bin(regs.minutes & BQ32K_MINUTES_MASK);
tm->tm_hour = bcd2bin(regs.cent_hours & BQ32K_HOURS_MASK);
tm->tm_mday = bcd2bin(regs.date);
tm->tm_wday = bcd2bin(regs.day) - 1;
......@@ -204,13 +211,10 @@ static int bq32k_probe(struct i2c_client *client,
/* Check Oscillator Failure flag */
error = bq32k_read(dev, &reg, BQ32K_MINUTES, 1);
if (!error && (reg & BQ32K_OF)) {
dev_warn(dev, "Oscillator Failure. Check RTC battery.\n");
reg &= ~BQ32K_OF;
error = bq32k_write(dev, &reg, BQ32K_MINUTES, 1);
}
if (error)
return error;
if (reg & BQ32K_OF)
dev_warn(dev, "Oscillator Failure. Check RTC battery.\n");
if (client->dev.of_node)
trickle_charger_of_init(dev, client->dev.of_node);
......
......@@ -62,6 +62,8 @@ struct cmos_rtc {
u8 day_alrm;
u8 mon_alrm;
u8 century;
struct rtc_wkalrm saved_wkalrm;
};
/* both platform and pnp busses use negative numbers for invalid irqs */
......@@ -707,6 +709,8 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
goto cleanup1;
}
hpet_rtc_timer_init();
if (is_valid_irq(rtc_irq)) {
irq_handler_t rtc_cmos_int_handler;
......@@ -714,6 +718,7 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
rtc_cmos_int_handler = hpet_rtc_interrupt;
retval = hpet_register_irq_handler(cmos_interrupt);
if (retval) {
hpet_mask_rtc_irq_bit(RTC_IRQMASK);
dev_warn(dev, "hpet_register_irq_handler "
" failed in rtc_init().");
goto cleanup1;
......@@ -729,7 +734,6 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
goto cleanup1;
}
}
hpet_rtc_timer_init();
/* export at least the first block of NVRAM */
nvram.size = address_space - NVRAM_OFFSET;
......@@ -844,8 +848,6 @@ static int cmos_aie_poweroff(struct device *dev)
return retval;
}
#ifdef CONFIG_PM
static int cmos_suspend(struct device *dev)
{
struct cmos_rtc *cmos = dev_get_drvdata(dev);
......@@ -877,6 +879,8 @@ static int cmos_suspend(struct device *dev)
enable_irq_wake(cmos->irq);
}
cmos_read_alarm(dev, &cmos->saved_wkalrm);
dev_dbg(dev, "suspend%s, ctrl %02x\n",
(tmp & RTC_AIE) ? ", alarm may wake" : "",
tmp);
......@@ -892,12 +896,32 @@ static int cmos_suspend(struct device *dev)
*/
static inline int cmos_poweroff(struct device *dev)
{
if (!IS_ENABLED(CONFIG_PM))
return -ENOSYS;
return cmos_suspend(dev);
}
#ifdef CONFIG_PM_SLEEP
static void cmos_check_wkalrm(struct device *dev)
{
struct cmos_rtc *cmos = dev_get_drvdata(dev);
struct rtc_wkalrm current_alarm;
time64_t t_current_expires;
time64_t t_saved_expires;
cmos_read_alarm(dev, &current_alarm);
t_current_expires = rtc_tm_to_time64(&current_alarm.time);
t_saved_expires = rtc_tm_to_time64(&cmos->saved_wkalrm.time);
if (t_current_expires != t_saved_expires ||
cmos->saved_wkalrm.enabled != current_alarm.enabled) {
cmos_set_alarm(dev, &cmos->saved_wkalrm);
}
}
static void cmos_check_acpi_rtc_status(struct device *dev,
unsigned char *rtc_control);
static int cmos_resume(struct device *dev)
static int __maybe_unused cmos_resume(struct device *dev)
{
struct cmos_rtc *cmos = dev_get_drvdata(dev);
unsigned char tmp;
......@@ -910,6 +934,9 @@ static int cmos_resume(struct device *dev)
cmos->enabled_wake = 0;
}
/* The BIOS might have changed the alarm, restore it */
cmos_check_wkalrm(dev);
spin_lock_irq(&rtc_lock);
tmp = cmos->suspend_ctrl;
cmos->suspend_ctrl = 0;
......@@ -936,6 +963,9 @@ static int cmos_resume(struct device *dev)
tmp &= ~RTC_AIE;
hpet_mask_rtc_irq_bit(RTC_AIE);
} while (mask & RTC_AIE);
if (tmp & RTC_AIE)
cmos_check_acpi_rtc_status(dev, &tmp);
}
spin_unlock_irq(&rtc_lock);
......@@ -944,16 +974,6 @@ static int cmos_resume(struct device *dev)
return 0;
}
#endif
#else
static inline int cmos_poweroff(struct device *dev)
{
return -ENOSYS;
}
#endif
static SIMPLE_DEV_PM_OPS(cmos_pm_ops, cmos_suspend, cmos_resume);
/*----------------------------------------------------------------*/
......@@ -973,6 +993,20 @@ static SIMPLE_DEV_PM_OPS(cmos_pm_ops, cmos_suspend, cmos_resume);
static u32 rtc_handler(void *context)
{
struct device *dev = context;
struct cmos_rtc *cmos = dev_get_drvdata(dev);
unsigned char rtc_control = 0;
unsigned char rtc_intr;
spin_lock_irq(&rtc_lock);
if (cmos_rtc.suspend_ctrl)
rtc_control = CMOS_READ(RTC_CONTROL);
if (rtc_control & RTC_AIE) {
cmos_rtc.suspend_ctrl &= ~RTC_AIE;
CMOS_WRITE(rtc_control, RTC_CONTROL);
rtc_intr = CMOS_READ(RTC_INTR_FLAGS);
rtc_update_irq(cmos->rtc, 1, rtc_intr);
}
spin_unlock_irq(&rtc_lock);
pm_wakeup_event(dev, 0);
acpi_clear_event(ACPI_EVENT_RTC);
......@@ -1039,12 +1073,39 @@ static void cmos_wake_setup(struct device *dev)
device_init_wakeup(dev, 1);
}
static void cmos_check_acpi_rtc_status(struct device *dev,
unsigned char *rtc_control)
{
struct cmos_rtc *cmos = dev_get_drvdata(dev);
acpi_event_status rtc_status;
acpi_status status;
if (acpi_gbl_FADT.flags & ACPI_FADT_FIXED_RTC)
return;
status = acpi_get_event_status(ACPI_EVENT_RTC, &rtc_status);
if (ACPI_FAILURE(status)) {
dev_err(dev, "Could not get RTC status\n");
} else if (rtc_status & ACPI_EVENT_FLAG_SET) {
unsigned char mask;
*rtc_control &= ~RTC_AIE;
CMOS_WRITE(*rtc_control, RTC_CONTROL);
mask = CMOS_READ(RTC_INTR_FLAGS);
rtc_update_irq(cmos->rtc, 1, mask);
}
}
#else
static void cmos_wake_setup(struct device *dev)
{
}
static void cmos_check_acpi_rtc_status(struct device *dev,
unsigned char *rtc_control)
{
}
#endif
#ifdef CONFIG_PNP
......@@ -1206,9 +1267,7 @@ static struct platform_driver cmos_platform_driver = {
.shutdown = cmos_platform_shutdown,
.driver = {
.name = driver_name,
#ifdef CONFIG_PM
.pm = &cmos_pm_ops,
#endif
.of_match_table = of_match_ptr(of_cmos_match),
}
};
......
......@@ -140,7 +140,7 @@ static int coh901331_alarm_irq_enable(struct device *dev, unsigned int enabled)
return 0;
}
static struct rtc_class_ops coh901331_ops = {
static const struct rtc_class_ops coh901331_ops = {
.read_time = coh901331_read_time,
.set_mmss = coh901331_set_mmss,
.read_alarm = coh901331_read_alarm,
......
......@@ -469,7 +469,7 @@ static int davinci_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
return 0;
}
static struct rtc_class_ops davinci_rtc_ops = {
static const struct rtc_class_ops davinci_rtc_ops = {
.ioctl = davinci_rtc_ioctl,
.read_time = davinci_rtc_read_time,
.set_time = davinci_rtc_set_time,
......
......@@ -159,7 +159,7 @@ static int dc_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
return 0;
}
static struct rtc_class_ops dc_rtc_ops = {
static const struct rtc_class_ops dc_rtc_ops = {
.read_time = dc_rtc_read_time,
.set_mmss = dc_rtc_set_mmss,
.read_alarm = dc_rtc_read_alarm,
......
......@@ -102,7 +102,7 @@ static int ds1302_rtc_get_time(struct device *dev, struct rtc_time *time)
return rtc_valid_tm(time);
}
static struct rtc_class_ops ds1302_rtc_ops = {
static const struct rtc_class_ops ds1302_rtc_ops = {
.read_time = ds1302_rtc_get_time,
.set_time = ds1302_rtc_set_time,
};
......
......@@ -186,6 +186,7 @@ static const struct i2c_device_id ds1307_id[] = {
{ "mcp7941x", mcp794xx },
{ "pt7c4338", ds_1307 },
{ "rx8025", rx_8025 },
{ "isl12057", ds_1337 },
{ }
};
MODULE_DEVICE_TABLE(i2c, ds1307_id);
......@@ -382,10 +383,25 @@ static int ds1307_get_time(struct device *dev, struct rtc_time *t)
t->tm_mday = bcd2bin(ds1307->regs[DS1307_REG_MDAY] & 0x3f);
tmp = ds1307->regs[DS1307_REG_MONTH] & 0x1f;
t->tm_mon = bcd2bin(tmp) - 1;
/* assume 20YY not 19YY, and ignore DS1337_BIT_CENTURY */
t->tm_year = bcd2bin(ds1307->regs[DS1307_REG_YEAR]) + 100;
#ifdef CONFIG_RTC_DRV_DS1307_CENTURY
switch (ds1307->type) {
case ds_1337:
case ds_1339:
case ds_3231:
if (ds1307->regs[DS1307_REG_MONTH] & DS1337_BIT_CENTURY)
t->tm_year += 100;
break;
case ds_1340:
if (ds1307->regs[DS1307_REG_HOUR] & DS1340_BIT_CENTURY)
t->tm_year += 100;
break;
default:
break;
}
#endif
dev_dbg(dev, "%s secs=%d, mins=%d, "
"hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n",
"read", t->tm_sec, t->tm_min,
......@@ -409,6 +425,27 @@ static int ds1307_set_time(struct device *dev, struct rtc_time *t)
t->tm_hour, t->tm_mday,
t->tm_mon, t->tm_year, t->tm_wday);
#ifdef CONFIG_RTC_DRV_DS1307_CENTURY
if (t->tm_year < 100)
return -EINVAL;
switch (ds1307->type) {
case ds_1337:
case ds_1339:
case ds_3231:
case ds_1340:
if (t->tm_year > 299)
return -EINVAL;
default:
if (t->tm_year > 199)
return -EINVAL;
break;
}
#else
if (t->tm_year < 100 || t->tm_year > 199)
return -EINVAL;
#endif
buf[DS1307_REG_SECS] = bin2bcd(t->tm_sec);
buf[DS1307_REG_MIN] = bin2bcd(t->tm_min);
buf[DS1307_REG_HOUR] = bin2bcd(t->tm_hour);
......@@ -424,11 +461,13 @@ static int ds1307_set_time(struct device *dev, struct rtc_time *t)