--- /dev/null
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/qcom-pm8xxx-rtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm PM8xxx PMIC RTC device
+
+maintainers:
+ - Satya Priya <skakit@codeaurora.org>
+
+properties:
+ compatible:
+ enum:
+ - qcom,pm8058-rtc
+ - qcom,pm8921-rtc
+ - qcom,pm8941-rtc
+ - qcom,pm8018-rtc
+ - qcom,pmk8350-rtc
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ allow-set-time:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Indicates that the setting of RTC time is allowed by the host CPU.
+
+required:
+ - compatible
+ - reg
+ - interrupts
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/spmi/spmi.h>
+ spmi_bus: spmi@c440000 {
+ reg = <0x0c440000 0x1100>;
+ #address-cells = <2>;
+ #size-cells = <0>;
+ pmicintc: pmic@0 {
+ reg = <0x0 SPMI_USID>;
+ compatible = "qcom,pm8921";
+ interrupts = <104 8>;
+ #interrupt-cells = <2>;
+ interrupt-controller;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pm8921_rtc: rtc@11d {
+ compatible = "qcom,pm8921-rtc";
+ reg = <0x11d>;
+ interrupts = <0x27 0>;
+ };
+ };
+ };
+...
config RTC_DRV_IMXDI
tristate "Freescale IMX DryIce Real Time Clock"
depends on ARCH_MXC
+ depends on OF
help
Support for Freescale IMX DryIce RTC
config RTC_DRV_GOLDFISH
tristate "Goldfish Real Time Clock"
- depends on OF && HAS_IOMEM
+ depends on HAS_IOMEM
help
Say yes to enable RTC driver for the Goldfish based virtual platform.
int rtc_update_irq_enable(struct rtc_device *rtc, unsigned int enabled)
{
- int rc = 0, err;
+ int err;
err = mutex_lock_interruptible(&rtc->ops_lock);
if (err)
if (rtc->uie_rtctimer.enabled == enabled)
goto out;
- if (rtc->uie_unsupported) {
- err = -EINVAL;
- goto out;
+ if (rtc->uie_unsupported || !test_bit(RTC_FEATURE_ALARM, rtc->features)) {
+ mutex_unlock(&rtc->ops_lock);
+#ifdef CONFIG_RTC_INTF_DEV_UIE_EMUL
+ return rtc_dev_update_irq_enable_emul(rtc, enabled);
+#else
+ return -EINVAL;
+#endif
}
if (enabled) {
struct rtc_time tm;
ktime_t now, onesec;
- rc = __rtc_read_time(rtc, &tm);
- if (rc)
+ err = __rtc_read_time(rtc, &tm);
+ if (err)
goto out;
onesec = ktime_set(1, 0);
now = rtc_tm_to_ktime(tm);
out:
mutex_unlock(&rtc->ops_lock);
- /*
- * __rtc_read_time() failed, this probably means that the RTC time has
- * never been set or less probably there is a transient error on the
- * bus. In any case, avoid enabling emulation has this will fail when
- * reading the time too.
- */
- if (rc)
- return rc;
-
-#ifdef CONFIG_RTC_INTF_DEV_UIE_EMUL
- /*
- * Enable emulation if the driver returned -EINVAL to signal that it has
- * been configured without interrupts or they are not available at the
- * moment.
- */
- if (err == -EINVAL)
- err = rtc_dev_update_irq_enable_emul(rtc, enabled);
-#endif
return err;
}
EXPORT_SYMBOL_GPL(rtc_update_irq_enable);
#include <linux/bcd.h>
#include <linux/of.h>
#include <linux/regmap.h>
+#include <linux/bitfield.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#define ABEOZ9_SEC_LEN 7
+#define ABEOZ9_REG_ALARM_SEC 0x10
+#define ABEOZ9_BIT_ALARM_SEC GENMASK(6, 0)
+#define ABEOZ9_REG_ALARM_MIN 0x11
+#define ABEOZ9_BIT_ALARM_MIN GENMASK(6, 0)
+#define ABEOZ9_REG_ALARM_HOURS 0x12
+#define ABEOZ9_BIT_ALARM_HOURS_PM BIT(5)
+#define ABEOZ9_BIT_ALARM_HOURS GENMASK(4, 0)
+#define ABEOZ9_REG_ALARM_DAYS 0x13
+#define ABEOZ9_BIT_ALARM_DAYS GENMASK(5, 0)
+#define ABEOZ9_REG_ALARM_WEEKDAYS 0x14
+#define ABEOZ9_BIT_ALARM_WEEKDAYS GENMASK(2, 0)
+#define ABEOZ9_REG_ALARM_MONTHS 0x15
+#define ABEOZ9_BIT_ALARM_MONTHS GENMASK(4, 0)
+#define ABEOZ9_REG_ALARM_YEARS 0x16
+
+#define ABEOZ9_ALARM_LEN 7
+#define ABEOZ9_BIT_ALARM_AE BIT(7)
+
#define ABEOZ9_REG_REG_TEMP 0x20
#define ABEOZ953_TEMP_MAX 120
#define ABEOZ953_TEMP_MIN -60
return abeoz9_reset_validity(regmap);
}
+static int abeoz9_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+ struct abeoz9_rtc_data *data = dev_get_drvdata(dev);
+ struct regmap *regmap = data->regmap;
+ u8 regs[ABEOZ9_ALARM_LEN];
+ u8 val[2];
+ int ret;
+
+ ret = abeoz9_check_validity(dev);
+ if (ret)
+ return ret;
+
+ ret = regmap_bulk_read(regmap, ABEOZ9_REG_CTRL_INT, val, sizeof(val));
+ if (ret)
+ return ret;
+
+ alarm->enabled = val[0] & ABEOZ9_REG_CTRL_INT_AIE;
+ alarm->pending = val[1] & ABEOZ9_REG_CTRL_INT_FLAG_AF;
+
+ ret = regmap_bulk_read(regmap, ABEOZ9_REG_ALARM_SEC, regs, sizeof(regs));
+ if (ret)
+ return ret;
+
+ alarm->time.tm_sec = bcd2bin(FIELD_GET(ABEOZ9_BIT_ALARM_SEC, regs[0]));
+ alarm->time.tm_min = bcd2bin(FIELD_GET(ABEOZ9_BIT_ALARM_MIN, regs[1]));
+ alarm->time.tm_hour = bcd2bin(FIELD_GET(ABEOZ9_BIT_ALARM_HOURS, regs[2]));
+ if (FIELD_GET(ABEOZ9_BIT_ALARM_HOURS_PM, regs[2]))
+ alarm->time.tm_hour += 12;
+
+ alarm->time.tm_mday = bcd2bin(FIELD_GET(ABEOZ9_BIT_ALARM_DAYS, regs[3]));
+
+ return 0;
+}
+
+static int abeoz9_rtc_alarm_irq_enable(struct device *dev, u32 enable)
+{
+ struct abeoz9_rtc_data *data = dev_get_drvdata(dev);
+
+ return regmap_update_bits(data->regmap, ABEOZ9_REG_CTRL_INT,
+ ABEOZ9_REG_CTRL_INT_AIE,
+ FIELD_PREP(ABEOZ9_REG_CTRL_INT_AIE, enable));
+}
+
+static int abeoz9_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
+{
+ struct abeoz9_rtc_data *data = dev_get_drvdata(dev);
+ u8 regs[ABEOZ9_ALARM_LEN] = {0};
+ int ret;
+
+ ret = regmap_update_bits(data->regmap, ABEOZ9_REG_CTRL_INT_FLAG,
+ ABEOZ9_REG_CTRL_INT_FLAG_AF, 0);
+ if (ret)
+ return ret;
+
+ regs[0] = ABEOZ9_BIT_ALARM_AE | FIELD_PREP(ABEOZ9_BIT_ALARM_SEC,
+ bin2bcd(alarm->time.tm_sec));
+ regs[1] = ABEOZ9_BIT_ALARM_AE | FIELD_PREP(ABEOZ9_BIT_ALARM_MIN,
+ bin2bcd(alarm->time.tm_min));
+ regs[2] = ABEOZ9_BIT_ALARM_AE | FIELD_PREP(ABEOZ9_BIT_ALARM_HOURS,
+ bin2bcd(alarm->time.tm_hour));
+ regs[3] = ABEOZ9_BIT_ALARM_AE | FIELD_PREP(ABEOZ9_BIT_ALARM_DAYS,
+ bin2bcd(alarm->time.tm_mday));
+
+ ret = regmap_bulk_write(data->regmap, ABEOZ9_REG_ALARM_SEC, regs,
+ sizeof(regs));
+ if (ret)
+ return ret;
+
+ return abeoz9_rtc_alarm_irq_enable(dev, alarm->enabled);
+}
+
+static irqreturn_t abeoz9_rtc_irq(int irq, void *dev)
+{
+ struct abeoz9_rtc_data *data = dev_get_drvdata(dev);
+ unsigned int val;
+ int ret;
+
+ ret = regmap_read(data->regmap, ABEOZ9_REG_CTRL_INT_FLAG, &val);
+ if (ret)
+ return IRQ_NONE;
+
+ if (!FIELD_GET(ABEOZ9_REG_CTRL_INT_FLAG_AF, val))
+ return IRQ_NONE;
+
+ regmap_update_bits(data->regmap, ABEOZ9_REG_CTRL_INT_FLAG,
+ ABEOZ9_REG_CTRL_INT_FLAG_AF, 0);
+
+ rtc_update_irq(data->rtc, 1, RTC_IRQF | RTC_AF);
+
+ return IRQ_HANDLED;
+}
+
static int abeoz9_trickle_parse_dt(struct device_node *node)
{
u32 ohms = 0;
static const struct rtc_class_ops rtc_ops = {
.read_time = abeoz9_rtc_get_time,
- .set_time = abeoz9_rtc_set_time,
+ .set_time = abeoz9_rtc_set_time,
+ .read_alarm = abeoz9_rtc_read_alarm,
+ .set_alarm = abeoz9_rtc_set_alarm,
+ .alarm_irq_enable = abeoz9_rtc_alarm_irq_enable,
};
static const struct regmap_config abeoz9_rtc_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
+ .max_register = 0x3f,
};
#if IS_REACHABLE(CONFIG_HWMON)
data->rtc->ops = &rtc_ops;
data->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
data->rtc->range_max = RTC_TIMESTAMP_END_2099;
+ data->rtc->uie_unsupported = 1;
+ clear_bit(RTC_FEATURE_ALARM, data->rtc->features);
+
+ if (client->irq > 0) {
+ ret = devm_request_threaded_irq(dev, client->irq, NULL,
+ abeoz9_rtc_irq,
+ IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+ dev_name(dev), dev);
+ if (ret) {
+ dev_err(dev, "failed to request alarm irq\n");
+ return ret;
+ }
+ }
+
+ if (client->irq > 0 || device_property_read_bool(dev, "wakeup-source")) {
+ ret = device_init_wakeup(dev, true);
+ set_bit(RTC_FEATURE_ALARM, data->rtc->features);
+ }
ret = devm_rtc_register_device(data->rtc);
if (ret)
struct ds1307 {
enum ds_type type;
- unsigned long flags;
-#define HAS_NVRAM 0 /* bit 0 == sysfs file active */
-#define HAS_ALARM 1 /* bit 1 == irq claimed */
struct device *dev;
struct regmap *regmap;
const char *name;
t->tm_min = bcd2bin(regs[DS1307_REG_MIN] & 0x7f);
tmp = regs[DS1307_REG_HOUR] & 0x3f;
t->tm_hour = bcd2bin(tmp);
- t->tm_wday = bcd2bin(regs[DS1307_REG_WDAY] & 0x07) - 1;
+ /* rx8130 is bit position, not BCD */
+ if (ds1307->type == rx_8130)
+ t->tm_wday = fls(regs[DS1307_REG_WDAY] & 0x7f);
+ else
+ t->tm_wday = bcd2bin(regs[DS1307_REG_WDAY] & 0x07) - 1;
t->tm_mday = bcd2bin(regs[DS1307_REG_MDAY] & 0x3f);
tmp = regs[DS1307_REG_MONTH] & 0x1f;
t->tm_mon = bcd2bin(tmp) - 1;
regs[DS1307_REG_SECS] = bin2bcd(t->tm_sec);
regs[DS1307_REG_MIN] = bin2bcd(t->tm_min);
regs[DS1307_REG_HOUR] = bin2bcd(t->tm_hour);
- regs[DS1307_REG_WDAY] = bin2bcd(t->tm_wday + 1);
+ /* rx8130 is bit position, not BCD */
+ if (ds1307->type == rx_8130)
+ regs[DS1307_REG_WDAY] = 1 << t->tm_wday;
+ else
+ regs[DS1307_REG_WDAY] = bin2bcd(t->tm_wday + 1);
regs[DS1307_REG_MDAY] = bin2bcd(t->tm_mday);
regs[DS1307_REG_MONTH] = bin2bcd(t->tm_mon + 1);
int ret;
u8 regs[9];
- if (!test_bit(HAS_ALARM, &ds1307->flags))
- return -EINVAL;
-
/* read all ALARM1, ALARM2, and status registers at once */
ret = regmap_bulk_read(ds1307->regmap, DS1339_REG_ALARM1_SECS,
regs, sizeof(regs));
u8 control, status;
int ret;
- if (!test_bit(HAS_ALARM, &ds1307->flags))
- return -EINVAL;
-
dev_dbg(dev, "%s secs=%d, mins=%d, "
"hours=%d, mday=%d, enabled=%d, pending=%d\n",
"alarm set", t->time.tm_sec, t->time.tm_min,
{
struct ds1307 *ds1307 = dev_get_drvdata(dev);
- if (!test_bit(HAS_ALARM, &ds1307->flags))
- return -ENOTTY;
-
return regmap_update_bits(ds1307->regmap, DS1337_REG_CONTROL,
DS1337_BIT_A1IE,
enabled ? DS1337_BIT_A1IE : 0);
u8 ald[3], ctl[3];
int ret;
- if (!test_bit(HAS_ALARM, &ds1307->flags))
- return -EINVAL;
-
/* Read alarm registers. */
ret = regmap_bulk_read(ds1307->regmap, RX8130_REG_ALARM_MIN, ald,
sizeof(ald));
u8 ald[3], ctl[3];
int ret;
- if (!test_bit(HAS_ALARM, &ds1307->flags))
- return -EINVAL;
-
dev_dbg(dev, "%s, sec=%d min=%d hour=%d wday=%d mday=%d mon=%d "
"enabled=%d pending=%d\n", __func__,
t->time.tm_sec, t->time.tm_min, t->time.tm_hour,
struct ds1307 *ds1307 = dev_get_drvdata(dev);
int ret, reg;
- if (!test_bit(HAS_ALARM, &ds1307->flags))
- return -EINVAL;
-
ret = regmap_read(ds1307->regmap, RX8130_REG_CONTROL0, ®);
if (ret < 0)
return ret;
u8 regs[10];
int ret;
- if (!test_bit(HAS_ALARM, &ds1307->flags))
- return -EINVAL;
-
/* Read control and alarm 0 registers. */
ret = regmap_bulk_read(ds1307->regmap, MCP794XX_REG_CONTROL, regs,
sizeof(regs));
unsigned char regs[10];
int wday, ret;
- if (!test_bit(HAS_ALARM, &ds1307->flags))
- return -EINVAL;
-
wday = mcp794xx_alm_weekday(dev, &t->time);
if (wday < 0)
return wday;
{
struct ds1307 *ds1307 = dev_get_drvdata(dev);
- if (!test_bit(HAS_ALARM, &ds1307->flags))
- return -EINVAL;
-
return regmap_update_bits(ds1307->regmap, MCP794XX_REG_CONTROL,
MCP794XX_BIT_ALM0_EN,
enabled ? MCP794XX_BIT_ALM0_EN : 0);
* Interrupt signal due to alarm conditions and square-wave
* output share same pin, so don't initialize both.
*/
- if (i == DS3231_CLK_SQW && test_bit(HAS_ALARM, &ds1307->flags))
+ if (i == DS3231_CLK_SQW && test_bit(RTC_FEATURE_ALARM, ds1307->rtc->features))
continue;
init.name = ds3231_clks_names[i];
bin2bcd(tmp));
}
- if (want_irq || ds1307_can_wakeup_device) {
- device_set_wakeup_capable(ds1307->dev, true);
- set_bit(HAS_ALARM, &ds1307->flags);
- }
-
ds1307->rtc = devm_rtc_allocate_device(ds1307->dev);
if (IS_ERR(ds1307->rtc))
return PTR_ERR(ds1307->rtc);
+ if (want_irq || ds1307_can_wakeup_device)
+ device_set_wakeup_capable(ds1307->dev, true);
+ else
+ clear_bit(RTC_FEATURE_ALARM, ds1307->rtc->features);
+
if (ds1307_can_wakeup_device && !want_irq) {
dev_info(ds1307->dev,
"'wakeup-source' is set, request for an IRQ is disabled!\n");
if (err) {
client->irq = 0;
device_set_wakeup_capable(ds1307->dev, false);
- clear_bit(HAS_ALARM, &ds1307->flags);
+ clear_bit(RTC_FEATURE_ALARM, ds1307->rtc->features);
dev_err(ds1307->dev, "unable to request IRQ!\n");
} else {
dev_dbg(ds1307->dev, "got IRQ %d\n", client->irq);
writeb(val, ds1511_base + (reg * reg_spacing));
}
-static inline void
-rtc_write_alarm(uint8_t val, enum ds1511reg reg)
-{
- rtc_write((val | 0x80), reg);
-}
-
static noinline uint8_t
rtc_read(enum ds1511reg reg)
{
{ .compatible = "fsl,lx2160a-ftm-alarm", },
{ },
};
+MODULE_DEVICE_TABLE(of, ftm_rtc_match);
static const struct acpi_device_id ftm_imx_acpi_ids[] = {
{"NXP0014",},
return imx_scu_irq_group_enable(SC_IRQ_GROUP_RTC, SC_IRQ_RTC, enable);
}
-static int imx_sc_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
-{
- /*
- * SCU firmware does NOT provide read alarm API, but .read_alarm
- * callback is required by RTC framework to support alarm function,
- * so just return here.
- */
- return 0;
-}
-
static int imx_sc_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct imx_sc_msg_timer_rtc_set_alarm msg;
static const struct rtc_class_ops imx_sc_rtc_ops = {
.read_time = imx_sc_rtc_read_time,
.set_time = imx_sc_rtc_set_time,
- .read_alarm = imx_sc_rtc_read_alarm,
.set_alarm = imx_sc_rtc_set_alarm,
.alarm_irq_enable = imx_sc_rtc_alarm_irq_enable,
};
return 0;
}
-#ifdef CONFIG_OF
static const struct of_device_id dryice_dt_ids[] = {
{ .compatible = "fsl,imx25-rtc" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, dryice_dt_ids);
-#endif
static struct platform_driver dryice_rtc_driver = {
.driver = {
.name = "imxdi_rtc",
- .of_match_table = of_match_ptr(dryice_dt_ids),
+ .of_match_table = dryice_dt_ids,
},
.remove = __exit_p(dryice_rtc_remove),
};
/* Try to get irq number. We also can work in
* the mode without IRQ.
*/
- m48t59->irq = platform_get_irq(pdev, 0);
+ m48t59->irq = platform_get_irq_optional(pdev, 0);
if (m48t59->irq <= 0)
m48t59->irq = NO_IRQ;
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,
},
.probe = mxc_rtc_probe,
};
/* enable RTC functional clock */
if (rtc->type->has_32kclk_en) {
reg = rtc_read(rtc, OMAP_RTC_OSC_REG);
- rtc_writel(rtc, OMAP_RTC_OSC_REG,
- reg | OMAP_RTC_OSC_32KCLK_EN);
+ rtc_write(rtc, OMAP_RTC_OSC_REG, reg | OMAP_RTC_OSC_32KCLK_EN);
}
/* clear old status */
reg = rtc_read(rtc, OMAP_RTC_OSC_REG);
reg &= ~OMAP_RTC_OSC_OSC32K_GZ_DISABLE;
reg |= OMAP_RTC_OSC_32KCLK_EN | OMAP_RTC_OSC_SEL_32KCLK_SRC;
- rtc_writel(rtc, OMAP_RTC_OSC_REG, reg);
+ rtc_write(rtc, OMAP_RTC_OSC_REG, reg);
}
rtc->type->lock(rtc);
{
struct clk *clk;
struct clk_init_data init;
+ struct device_node *node = pcf85063->rtc->dev.parent->of_node;
init.name = "pcf85063-clkout";
init.ops = &pcf85063_clkout_ops;
pcf85063->clkout_hw.init = &init;
/* optional override of the clockname */
- of_property_read_string(pcf85063->rtc->dev.of_node,
- "clock-output-names", &init.name);
+ of_property_read_string(node, "clock-output-names", &init.name);
/* register the clock */
clk = devm_clk_register(&pcf85063->rtc->dev, &pcf85063->clkout_hw);
if (!IS_ERR(clk))
- of_clk_add_provider(pcf85063->rtc->dev.of_node,
- of_clk_src_simple_get, clk);
+ of_clk_add_provider(node, of_clk_src_simple_get, clk);
return clk;
}
#include <linux/module.h>
#include <linux/rtc.h>
#include <linux/of.h>
-
-#define DRIVER_NAME "rtc-pcf8523"
+#include <linux/pm_wakeirq.h>
#define REG_CONTROL1 0x00
#define REG_CONTROL1_CAP_SEL BIT(7)
#define REG_CONTROL1_STOP BIT(5)
+#define REG_CONTROL1_AIE BIT(1)
+
+#define REG_CONTROL2 0x01
+#define REG_CONTROL2_AF BIT(3)
#define REG_CONTROL3 0x02
#define REG_CONTROL3_PM_BLD BIT(7) /* battery low detection disabled */
#define REG_MONTHS 0x08
#define REG_YEARS 0x09
+#define REG_MINUTE_ALARM 0x0a
+#define REG_HOUR_ALARM 0x0b
+#define REG_DAY_ALARM 0x0c
+#define REG_WEEKDAY_ALARM 0x0d
+#define ALARM_DIS BIT(7)
+
#define REG_OFFSET 0x0e
#define REG_OFFSET_MODE BIT(7)
+#define REG_TMR_CLKOUT_CTRL 0x0f
+
+struct pcf8523 {
+ struct rtc_device *rtc;
+ struct i2c_client *client;
+};
+
static int pcf8523_read(struct i2c_client *client, u8 reg, u8 *valuep)
{
struct i2c_msg msgs[2];
return 0;
}
+static irqreturn_t pcf8523_irq(int irq, void *dev_id)
+{
+ struct pcf8523 *pcf8523 = i2c_get_clientdata(dev_id);
+ u8 value;
+ int err;
+
+ err = pcf8523_read(pcf8523->client, REG_CONTROL2, &value);
+ if (err < 0)
+ return IRQ_HANDLED;
+
+ if (value & REG_CONTROL2_AF) {
+ value &= ~REG_CONTROL2_AF;
+ pcf8523_write(pcf8523->client, REG_CONTROL2, value);
+ rtc_update_irq(pcf8523->rtc, 1, RTC_IRQF | RTC_AF);
+
+ return IRQ_HANDLED;
+ }
+
+ return IRQ_NONE;
+}
+
static int pcf8523_stop_rtc(struct i2c_client *client)
{
u8 value;
return pcf8523_start_rtc(client);
}
+static int pcf8523_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *tm)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ u8 start = REG_MINUTE_ALARM, regs[4];
+ struct i2c_msg msgs[2];
+ u8 value;
+ int err;
+
+ msgs[0].addr = client->addr;
+ msgs[0].flags = 0;
+ msgs[0].len = 1;
+ msgs[0].buf = &start;
+
+ msgs[1].addr = client->addr;
+ msgs[1].flags = I2C_M_RD;
+ msgs[1].len = sizeof(regs);
+ msgs[1].buf = regs;
+
+ err = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+ if (err < 0)
+ return err;
+
+ tm->time.tm_sec = 0;
+ tm->time.tm_min = bcd2bin(regs[0] & 0x7F);
+ tm->time.tm_hour = bcd2bin(regs[1] & 0x3F);
+ tm->time.tm_mday = bcd2bin(regs[2] & 0x3F);
+ tm->time.tm_wday = bcd2bin(regs[3] & 0x7);
+
+ err = pcf8523_read(client, REG_CONTROL1, &value);
+ if (err < 0)
+ return err;
+ tm->enabled = !!(value & REG_CONTROL1_AIE);
+
+ err = pcf8523_read(client, REG_CONTROL2, &value);
+ if (err < 0)
+ return err;
+ tm->pending = !!(value & REG_CONTROL2_AF);
+
+ return 0;
+}
+
+static int pcf8523_irq_enable(struct device *dev, unsigned int enabled)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ u8 value;
+ int err;
+
+ err = pcf8523_read(client, REG_CONTROL1, &value);
+ if (err < 0)
+ return err;
+
+ value &= REG_CONTROL1_AIE;
+
+ if (enabled)
+ value |= REG_CONTROL1_AIE;
+
+ err = pcf8523_write(client, REG_CONTROL1, value);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int pcf8523_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *tm)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_msg msg;
+ u8 regs[5];
+ int err;
+
+ err = pcf8523_irq_enable(dev, 0);
+ if (err)
+ return err;
+
+ err = pcf8523_write(client, REG_CONTROL2, 0);
+ if (err < 0)
+ return err;
+
+ /* The alarm has no seconds, round up to nearest minute */
+ if (tm->time.tm_sec) {
+ time64_t alarm_time = rtc_tm_to_time64(&tm->time);
+
+ alarm_time += 60 - tm->time.tm_sec;
+ rtc_time64_to_tm(alarm_time, &tm->time);
+ }
+
+ regs[0] = REG_MINUTE_ALARM;
+ regs[1] = bin2bcd(tm->time.tm_min);
+ regs[2] = bin2bcd(tm->time.tm_hour);
+ regs[3] = bin2bcd(tm->time.tm_mday);
+ regs[4] = ALARM_DIS;
+ msg.addr = client->addr;
+ msg.flags = 0;
+ msg.len = sizeof(regs);
+ msg.buf = regs;
+ err = i2c_transfer(client->adapter, &msg, 1);
+ if (err < 0)
+ return err;
+
+ if (tm->enabled)
+ return pcf8523_irq_enable(dev, tm->enabled);
+
+ return 0;
+}
+
#ifdef CONFIG_RTC_INTF_DEV
static int pcf8523_rtc_ioctl(struct device *dev, unsigned int cmd,
unsigned long arg)
{
struct i2c_client *client = to_i2c_client(dev);
+ unsigned int flags = 0;
+ u8 value;
int ret;
switch (cmd) {
if (ret < 0)
return ret;
if (ret)
- ret = RTC_VL_BACKUP_LOW;
+ flags |= RTC_VL_BACKUP_LOW;
- return put_user(ret, (unsigned int __user *)arg);
+ ret = pcf8523_read(client, REG_SECONDS, &value);
+ if (ret < 0)
+ return ret;
+
+ if (value & REG_SECONDS_OS)
+ flags |= RTC_VL_DATA_INVALID;
+
+ return put_user(flags, (unsigned int __user *)arg);
default:
return -ENOIOCTLCMD;
static const struct rtc_class_ops pcf8523_rtc_ops = {
.read_time = pcf8523_rtc_read_time,
.set_time = pcf8523_rtc_set_time,
+ .read_alarm = pcf8523_rtc_read_alarm,
+ .set_alarm = pcf8523_rtc_set_alarm,
+ .alarm_irq_enable = pcf8523_irq_enable,
.ioctl = pcf8523_rtc_ioctl,
.read_offset = pcf8523_rtc_read_offset,
.set_offset = pcf8523_rtc_set_offset,
static int pcf8523_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
+ struct pcf8523 *pcf8523;
struct rtc_device *rtc;
+ bool wakeup_source = false;
int err;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
return -ENODEV;
+ pcf8523 = devm_kzalloc(&client->dev, sizeof(struct pcf8523), GFP_KERNEL);
+ if (!pcf8523)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, pcf8523);
+ pcf8523->client = client;
+
err = pcf8523_load_capacitance(client);
if (err < 0)
dev_warn(&client->dev, "failed to set xtal load capacitance: %d",
if (IS_ERR(rtc))
return PTR_ERR(rtc);
+ pcf8523->rtc = rtc;
rtc->ops = &pcf8523_rtc_ops;
rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
rtc->range_max = RTC_TIMESTAMP_END_2099;
+ rtc->uie_unsupported = 1;
+
+ if (client->irq > 0) {
+ err = pcf8523_write(client, REG_TMR_CLKOUT_CTRL, 0x38);
+ if (err < 0)
+ return err;
+
+ err = devm_request_threaded_irq(&client->dev, client->irq,
+ NULL, pcf8523_irq,
+ IRQF_SHARED | IRQF_ONESHOT | IRQF_TRIGGER_LOW,
+ dev_name(&rtc->dev), client);
+ if (err)
+ return err;
+
+ dev_pm_set_wake_irq(&client->dev, client->irq);
+ }
+
+#ifdef CONFIG_OF
+ wakeup_source = of_property_read_bool(client->dev.of_node, "wakeup-source");
+#endif
+ if (client->irq > 0 || wakeup_source)
+ device_init_wakeup(&client->dev, true);
return devm_rtc_register_device(rtc);
}
static struct i2c_driver pcf8523_driver = {
.driver = {
- .name = DRIVER_NAME,
+ .name = "rtc-pcf8523",
.of_match_table = of_match_ptr(pcf8523_of_match),
},
.probe = pcf8523_probe,
.alarm_en = BIT(7),
};
+static const struct pm8xxx_rtc_regs pmk8350_regs = {
+ .ctrl = 0x6146,
+ .write = 0x6140,
+ .read = 0x6148,
+ .alarm_rw = 0x6240,
+ .alarm_ctrl = 0x6246,
+ .alarm_ctrl2 = 0x6248,
+ .alarm_en = BIT(7),
+};
+
/*
* Hardcoded RTC bases until IORESOURCE_REG mapping is figured out
*/
{ .compatible = "qcom,pm8018-rtc", .data = &pm8921_regs },
{ .compatible = "qcom,pm8058-rtc", .data = &pm8058_regs },
{ .compatible = "qcom,pm8941-rtc", .data = &pm8941_regs },
+ { .compatible = "qcom,pmk8350-rtc", .data = &pmk8350_regs },
{ },
};
MODULE_DEVICE_TABLE(of, pm8xxx_id_table);
tm->tm_sec = bcd2bin(date[RV3028_SEC] & 0x7f);
tm->tm_min = bcd2bin(date[RV3028_MIN] & 0x7f);
tm->tm_hour = bcd2bin(date[RV3028_HOUR] & 0x3f);
- tm->tm_wday = ilog2(date[RV3028_WDAY] & 0x7f);
+ tm->tm_wday = date[RV3028_WDAY] & 0x7f;
tm->tm_mday = bcd2bin(date[RV3028_DAY] & 0x3f);
tm->tm_mon = bcd2bin(date[RV3028_MONTH] & 0x1f) - 1;
tm->tm_year = bcd2bin(date[RV3028_YEAR]) + 100;
date[RV3028_SEC] = bin2bcd(tm->tm_sec);
date[RV3028_MIN] = bin2bcd(tm->tm_min);
date[RV3028_HOUR] = bin2bcd(tm->tm_hour);
- date[RV3028_WDAY] = 1 << (tm->tm_wday);
+ date[RV3028_WDAY] = tm->tm_wday;
date[RV3028_DAY] = bin2bcd(tm->tm_mday);
date[RV3028_MONTH] = bin2bcd(tm->tm_mon + 1);
date[RV3028_YEAR] = bin2bcd(tm->tm_year - 100);
return rx6110_probe(rx6110, &client->dev);
}
+static const struct acpi_device_id rx6110_i2c_acpi_match[] = {
+ { "SECC6110" },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, rx6110_i2c_acpi_match);
+
static const struct i2c_device_id rx6110_i2c_id[] = {
{ "rx6110", 0 },
{ }
static struct i2c_driver rx6110_i2c_driver = {
.driver = {
.name = RX6110_DRIVER_NAME,
+ .acpi_match_table = rx6110_i2c_acpi_match,
},
.probe = rx6110_i2c_probe,
.id_table = rx6110_i2c_id,
static int s5m_rtc_probe(struct platform_device *pdev)
{
struct sec_pmic_dev *s5m87xx = dev_get_drvdata(pdev->dev.parent);
- struct sec_platform_data *pdata = s5m87xx->pdata;
struct s5m_rtc_info *info;
const struct regmap_config *regmap_cfg;
int ret, alarm_irq;
- if (!pdata) {
- dev_err(pdev->dev.parent, "Platform data not supplied\n");
- return -ENODEV;
- }
-
info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
static irqreturn_t spear_rtc_irq(int irq, void *dev_id)
{
struct spear_rtc_config *config = dev_id;
- unsigned long flags, events = 0;
+ unsigned long events = 0;
unsigned int irq_data;
- spin_lock_irqsave(&config->lock, flags);
+ spin_lock(&config->lock);
irq_data = readl(config->ioaddr + STATUS_REG);
- spin_unlock_irqrestore(&config->lock, flags);
+ spin_unlock(&config->lock);
if ((irq_data & RTC_INT_MASK)) {
spear_rtc_clear_interrupt(config);
#include <linux/rtc.h>
#include <linux/bcd.h>
#include <linux/math64.h>
+#include <linux/property.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/mfd/tps65910.h>
if (!device_can_wakeup(rtc->dev.parent))
return false;
- return rtc->ops->set_alarm != NULL;
+ return !!test_bit(RTC_FEATURE_ALARM, rtc->features);
}
static umode_t rtc_attr_is_visible(struct kobject *kobj,
projects / linux-block.git / commitdiff