@@ -11,6 +11,7 @@
#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>
@@ -57,6 +58,24 @@
#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
@@ -186,6 +205,98 @@ static int abeoz9_rtc_set_time(struct device *dev, struct rtc_time *tm)
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;
@@ -261,6 +372,14 @@ static const struct rtc_class_ops rtc_ops = {
.set_time = abeoz9_rtc_set_time,
};
+static const struct rtc_class_ops rtc_alarm_ops = {
+ .read_time = abeoz9_rtc_get_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,
@@ -420,6 +539,23 @@ static int abeoz9_probe(struct i2c_client *client,
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;
+
+ 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);
+ data->rtc->ops = &rtc_alarm_ops;
+ }
ret = devm_rtc_register_device(data->rtc);
if (ret)