summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/rtc/Kconfig10
-rw-r--r--drivers/rtc/Makefile1
-rw-r--r--drivers/rtc/rtc-abx80x.c146
-rw-r--r--drivers/rtc/rtc-cmos.c2
-rw-r--r--drivers/rtc/rtc-da9063.c23
-rw-r--r--drivers/rtc/rtc-ds1305.c8
-rw-r--r--drivers/rtc/rtc-ds1307.c17
-rw-r--r--drivers/rtc/rtc-ds1685.c22
-rw-r--r--drivers/rtc/rtc-ds2404.c4
-rw-r--r--drivers/rtc/rtc-efi.c66
-rw-r--r--drivers/rtc/rtc-gemini.c1
-rw-r--r--drivers/rtc/rtc-imxdi.c2
-rw-r--r--drivers/rtc/rtc-lpc32xx.c2
-rw-r--r--drivers/rtc/rtc-pcf8523.c11
-rw-r--r--drivers/rtc/rtc-proc.c8
-rw-r--r--drivers/rtc/rtc-rv8803.c3
-rw-r--r--drivers/rtc/rtc-rx8010.c523
-rw-r--r--drivers/rtc/rtc-s5m.c138
-rw-r--r--drivers/rtc/rtc-sunxi.c18
-rw-r--r--drivers/rtc/rtc-sysfs.c11
-rw-r--r--drivers/rtc/rtc-v3020.c6
-rw-r--r--include/linux/mfd/samsung/rtc.h2
22 files changed, 894 insertions, 130 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 2a524244afec..376322f71fd5 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -558,6 +558,16 @@ config RTC_DRV_FM3130
This driver can also be built as a module. If so the module
will be called rtc-fm3130.
+config RTC_DRV_RX8010
+ tristate "Epson RX8010SJ"
+ depends on I2C
+ help
+ If you say yes here you get support for the Epson RX8010SJ RTC
+ chip.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-rx8010.
+
config RTC_DRV_RX8581
tristate "Epson RX-8581"
help
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 231f76451615..62d61b26ca7e 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -128,6 +128,7 @@ obj-$(CONFIG_RTC_DRV_RS5C372) += rtc-rs5c372.o
obj-$(CONFIG_RTC_DRV_RV3029C2) += rtc-rv3029c2.o
obj-$(CONFIG_RTC_DRV_RV8803) += rtc-rv8803.o
obj-$(CONFIG_RTC_DRV_RX4581) += rtc-rx4581.o
+obj-$(CONFIG_RTC_DRV_RX8010) += rtc-rx8010.o
obj-$(CONFIG_RTC_DRV_RX8025) += rtc-rx8025.o
obj-$(CONFIG_RTC_DRV_RX8581) += rtc-rx8581.o
obj-$(CONFIG_RTC_DRV_S35390A) += rtc-s35390a.o
diff --git a/drivers/rtc/rtc-abx80x.c b/drivers/rtc/rtc-abx80x.c
index afea84c7a155..d41bbcd653f6 100644
--- a/drivers/rtc/rtc-abx80x.c
+++ b/drivers/rtc/rtc-abx80x.c
@@ -27,10 +27,28 @@
#define ABX8XX_REG_YR 0x06
#define ABX8XX_REG_WD 0x07
+#define ABX8XX_REG_AHTH 0x08
+#define ABX8XX_REG_ASC 0x09
+#define ABX8XX_REG_AMN 0x0a
+#define ABX8XX_REG_AHR 0x0b
+#define ABX8XX_REG_ADA 0x0c
+#define ABX8XX_REG_AMO 0x0d
+#define ABX8XX_REG_AWD 0x0e
+
+#define ABX8XX_REG_STATUS 0x0f
+#define ABX8XX_STATUS_AF BIT(2)
+
#define ABX8XX_REG_CTRL1 0x10
#define ABX8XX_CTRL_WRITE BIT(0)
+#define ABX8XX_CTRL_ARST BIT(2)
#define ABX8XX_CTRL_12_24 BIT(6)
+#define ABX8XX_REG_IRQ 0x12
+#define ABX8XX_IRQ_AIE BIT(2)
+#define ABX8XX_IRQ_IM_1_4 (0x3 << 5)
+
+#define ABX8XX_REG_CD_TIMER_CTL 0x18
+
#define ABX8XX_REG_CFG_KEY 0x1f
#define ABX8XX_CFG_KEY_MISC 0x9d
@@ -63,8 +81,6 @@ static struct abx80x_cap abx80x_caps[] = {
[ABX80X] = {.pn = 0}
};
-static struct i2c_driver abx80x_driver;
-
static int abx80x_enable_trickle_charger(struct i2c_client *client,
u8 trickle_cfg)
{
@@ -148,9 +164,111 @@ static int abx80x_rtc_set_time(struct device *dev, struct rtc_time *tm)
return 0;
}
+static irqreturn_t abx80x_handle_irq(int irq, void *dev_id)
+{
+ struct i2c_client *client = dev_id;
+ struct rtc_device *rtc = i2c_get_clientdata(client);
+ int status;
+
+ status = i2c_smbus_read_byte_data(client, ABX8XX_REG_STATUS);
+ if (status < 0)
+ return IRQ_NONE;
+
+ if (status & ABX8XX_STATUS_AF)
+ rtc_update_irq(rtc, 1, RTC_AF | RTC_IRQF);
+
+ i2c_smbus_write_byte_data(client, ABX8XX_REG_STATUS, 0);
+
+ return IRQ_HANDLED;
+}
+
+static int abx80x_read_alarm(struct device *dev, struct rtc_wkalrm *t)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ unsigned char buf[7];
+
+ int irq_mask, err;
+
+ if (client->irq <= 0)
+ return -EINVAL;
+
+ err = i2c_smbus_read_i2c_block_data(client, ABX8XX_REG_ASC,
+ sizeof(buf), buf);
+ if (err)
+ return err;
+
+ irq_mask = i2c_smbus_read_byte_data(client, ABX8XX_REG_IRQ);
+ if (irq_mask < 0)
+ return irq_mask;
+
+ t->time.tm_sec = bcd2bin(buf[0] & 0x7F);
+ t->time.tm_min = bcd2bin(buf[1] & 0x7F);
+ t->time.tm_hour = bcd2bin(buf[2] & 0x3F);
+ t->time.tm_mday = bcd2bin(buf[3] & 0x3F);
+ t->time.tm_mon = bcd2bin(buf[4] & 0x1F) - 1;
+ t->time.tm_wday = buf[5] & 0x7;
+
+ t->enabled = !!(irq_mask & ABX8XX_IRQ_AIE);
+ t->pending = (buf[6] & ABX8XX_STATUS_AF) && t->enabled;
+
+ return err;
+}
+
+static int abx80x_set_alarm(struct device *dev, struct rtc_wkalrm *t)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ u8 alarm[6];
+ int err;
+
+ if (client->irq <= 0)
+ return -EINVAL;
+
+ alarm[0] = 0x0;
+ alarm[1] = bin2bcd(t->time.tm_sec);
+ alarm[2] = bin2bcd(t->time.tm_min);
+ alarm[3] = bin2bcd(t->time.tm_hour);
+ alarm[4] = bin2bcd(t->time.tm_mday);
+ alarm[5] = bin2bcd(t->time.tm_mon + 1);
+
+ err = i2c_smbus_write_i2c_block_data(client, ABX8XX_REG_AHTH,
+ sizeof(alarm), alarm);
+ if (err < 0) {
+ dev_err(&client->dev, "Unable to write alarm registers\n");
+ return -EIO;
+ }
+
+ if (t->enabled) {
+ err = i2c_smbus_write_byte_data(client, ABX8XX_REG_IRQ,
+ (ABX8XX_IRQ_IM_1_4 |
+ ABX8XX_IRQ_AIE));
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int abx80x_alarm_irq_enable(struct device *dev, unsigned int enabled)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ int err;
+
+ if (enabled)
+ err = i2c_smbus_write_byte_data(client, ABX8XX_REG_IRQ,
+ (ABX8XX_IRQ_IM_1_4 |
+ ABX8XX_IRQ_AIE));
+ else
+ err = i2c_smbus_write_byte_data(client, ABX8XX_REG_IRQ,
+ ABX8XX_IRQ_IM_1_4);
+ return err;
+}
+
static const struct rtc_class_ops abx80x_rtc_ops = {
.read_time = abx80x_rtc_read_time,
.set_time = abx80x_rtc_set_time,
+ .read_alarm = abx80x_read_alarm,
+ .set_alarm = abx80x_set_alarm,
+ .alarm_irq_enable = abx80x_alarm_irq_enable,
};
static int abx80x_dt_trickle_cfg(struct device_node *np)
@@ -225,7 +343,8 @@ static int abx80x_probe(struct i2c_client *client,
}
err = i2c_smbus_write_byte_data(client, ABX8XX_REG_CTRL1,
- ((data & ~ABX8XX_CTRL_12_24) |
+ ((data & ~(ABX8XX_CTRL_12_24 |
+ ABX8XX_CTRL_ARST)) |
ABX8XX_CTRL_WRITE));
if (err < 0) {
dev_err(&client->dev, "Unable to write control register\n");
@@ -260,7 +379,12 @@ static int abx80x_probe(struct i2c_client *client,
abx80x_enable_trickle_charger(client, trickle_cfg);
}
- rtc = devm_rtc_device_register(&client->dev, abx80x_driver.driver.name,
+ err = i2c_smbus_write_byte_data(client, ABX8XX_REG_CD_TIMER_CTL,
+ BIT(2));
+ if (err)
+ return err;
+
+ rtc = devm_rtc_device_register(&client->dev, "abx8xx",
&abx80x_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc))
@@ -268,6 +392,19 @@ static int abx80x_probe(struct i2c_client *client,
i2c_set_clientdata(client, rtc);
+ if (client->irq > 0) {
+ dev_info(&client->dev, "IRQ %d supplied\n", client->irq);
+ err = devm_request_threaded_irq(&client->dev, client->irq, NULL,
+ abx80x_handle_irq,
+ IRQF_SHARED | IRQF_ONESHOT,
+ "abx8xx",
+ client);
+ if (err) {
+ dev_err(&client->dev, "unable to request IRQ, alarms disabled\n");
+ client->irq = 0;
+ }
+ }
+
return 0;
}
@@ -286,6 +423,7 @@ static const struct i2c_device_id abx80x_id[] = {
{ "ab1803", AB1803 },
{ "ab1804", AB1804 },
{ "ab1805", AB1805 },
+ { "rv1805", AB1805 },
{ }
};
MODULE_DEVICE_TABLE(i2c, abx80x_id);
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index 8f7034ba7d9e..84fb541038be 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -725,7 +725,7 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
rtc_cmos_int_handler = cmos_interrupt;
retval = request_irq(rtc_irq, rtc_cmos_int_handler,
- 0, dev_name(&cmos_rtc.rtc->dev),
+ IRQF_SHARED, dev_name(&cmos_rtc.rtc->dev),
cmos_rtc.rtc);
if (retval < 0) {
dev_dbg(dev, "IRQ %d is already in use\n", rtc_irq);
diff --git a/drivers/rtc/rtc-da9063.c b/drivers/rtc/rtc-da9063.c
index d6c853bbfa9f..f85cae240f12 100644
--- a/drivers/rtc/rtc-da9063.c
+++ b/drivers/rtc/rtc-da9063.c
@@ -191,24 +191,13 @@ static void da9063_tm_to_data(struct rtc_time *tm, u8 *data,
{
const struct da9063_compatible_rtc_regmap *config = rtc->config;
- data[RTC_SEC] &= ~config->rtc_count_sec_mask;
- data[RTC_SEC] |= tm->tm_sec & config->rtc_count_sec_mask;
-
- data[RTC_MIN] &= ~config->rtc_count_min_mask;
- data[RTC_MIN] |= tm->tm_min & config->rtc_count_min_mask;
-
- data[RTC_HOUR] &= ~config->rtc_count_hour_mask;
- data[RTC_HOUR] |= tm->tm_hour & config->rtc_count_hour_mask;
-
- data[RTC_DAY] &= ~config->rtc_count_day_mask;
- data[RTC_DAY] |= tm->tm_mday & config->rtc_count_day_mask;
-
- data[RTC_MONTH] &= ~config->rtc_count_month_mask;
- data[RTC_MONTH] |= MONTHS_TO_DA9063(tm->tm_mon) &
+ data[RTC_SEC] = tm->tm_sec & config->rtc_count_sec_mask;
+ data[RTC_MIN] = tm->tm_min & config->rtc_count_min_mask;
+ data[RTC_HOUR] = tm->tm_hour & config->rtc_count_hour_mask;
+ data[RTC_DAY] = tm->tm_mday & config->rtc_count_day_mask;
+ data[RTC_MONTH] = MONTHS_TO_DA9063(tm->tm_mon) &
config->rtc_count_month_mask;
-
- data[RTC_YEAR] &= ~config->rtc_count_year_mask;
- data[RTC_YEAR] |= YEARS_TO_DA9063(tm->tm_year) &
+ data[RTC_YEAR] = YEARS_TO_DA9063(tm->tm_year) &
config->rtc_count_year_mask;
}
diff --git a/drivers/rtc/rtc-ds1305.c b/drivers/rtc/rtc-ds1305.c
index 85706a9f82c9..f39691eea736 100644
--- a/drivers/rtc/rtc-ds1305.c
+++ b/drivers/rtc/rtc-ds1305.c
@@ -186,9 +186,7 @@ static int ds1305_get_time(struct device *dev, struct rtc_time *time)
if (status < 0)
return status;
- dev_vdbg(dev, "%s: %02x %02x %02x, %02x %02x %02x %02x\n",
- "read", buf[0], buf[1], buf[2], buf[3],
- buf[4], buf[5], buf[6]);
+ dev_vdbg(dev, "%s: %3ph, %4ph\n", "read", &buf[0], &buf[3]);
/* Decode the registers */
time->tm_sec = bcd2bin(buf[DS1305_SEC]);
@@ -232,9 +230,7 @@ static int ds1305_set_time(struct device *dev, struct rtc_time *time)
*bp++ = bin2bcd(time->tm_mon + 1);
*bp++ = bin2bcd(time->tm_year - 100);
- dev_dbg(dev, "%s: %02x %02x %02x, %02x %02x %02x %02x\n",
- "write", buf[1], buf[2], buf[3],
- buf[4], buf[5], buf[6], buf[7]);
+ dev_dbg(dev, "%s: %3ph, %4ph\n", "write", &buf[1], &buf[4]);
/* use write-then-read since dma from stack is nonportable */
return spi_write_then_read(ds1305->spi, buf, sizeof(buf),
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index aa705bb4748c..cf685f67b391 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -460,13 +460,8 @@ static int ds1337_read_alarm(struct device *dev, struct rtc_wkalrm *t)
return -EIO;
}
- dev_dbg(dev, "%s: %02x %02x %02x %02x, %02x %02x %02x, %02x %02x\n",
- "alarm read",
- ds1307->regs[0], ds1307->regs[1],
- ds1307->regs[2], ds1307->regs[3],
- ds1307->regs[4], ds1307->regs[5],
- ds1307->regs[6], ds1307->regs[7],
- ds1307->regs[8]);
+ dev_dbg(dev, "%s: %4ph, %3ph, %2ph\n", "alarm read",
+ &ds1307->regs[0], &ds1307->regs[4], &ds1307->regs[7]);
/*
* report alarm time (ALARM1); assume 24 hour and day-of-month modes,
@@ -522,12 +517,8 @@ static int ds1337_set_alarm(struct device *dev, struct rtc_wkalrm *t)
control = ds1307->regs[7];
status = ds1307->regs[8];
- dev_dbg(dev, "%s: %02x %02x %02x %02x, %02x %02x %02x, %02x %02x\n",
- "alarm set (old status)",
- ds1307->regs[0], ds1307->regs[1],
- ds1307->regs[2], ds1307->regs[3],
- ds1307->regs[4], ds1307->regs[5],
- ds1307->regs[6], control, status);
+ dev_dbg(dev, "%s: %4ph, %3ph, %02x %02x\n", "alarm set (old status)",
+ &ds1307->regs[0], &ds1307->regs[4], control, status);
/* set ALARM1, using 24 hour and day-of-month modes */
buf[0] = bin2bcd(t->time.tm_sec);
diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c
index 05a51ef52703..535050fc5e9f 100644
--- a/drivers/rtc/rtc-ds1685.c
+++ b/drivers/rtc/rtc-ds1685.c
@@ -853,7 +853,7 @@ ds1685_rtc_proc(struct device *dev, struct seq_file *seq)
"Periodic Rate\t: %s\n"
"SQW Freq\t: %s\n"
#ifdef CONFIG_RTC_DS1685_PROC_REGS
- "Serial #\t: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n"
+ "Serial #\t: %8phC\n"
"Register Status\t:\n"
" Ctrl A\t: UIP DV2 DV1 DV0 RS3 RS2 RS1 RS0\n"
"\t\t: %s\n"
@@ -872,7 +872,7 @@ ds1685_rtc_proc(struct device *dev, struct seq_file *seq)
" Ctrl 4B\t: ABE E32k CS RCE PRS RIE WIE KSE\n"
"\t\t: %s\n",
#else
- "Serial #\t: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
+ "Serial #\t: %8phC\n",
#endif
model,
((ctrla & RTC_CTRL_A_DV1) ? "enabled" : "disabled"),
@@ -888,7 +888,7 @@ ds1685_rtc_proc(struct device *dev, struct seq_file *seq)
(!((ctrl4b & RTC_CTRL_4B_E32K)) ?
ds1685_rtc_sqw_freq[(ctrla & RTC_CTRL_A_RS_MASK)] : "32768Hz"),
#ifdef CONFIG_RTC_DS1685_PROC_REGS
- ssn[0], ssn[1], ssn[2], ssn[3], ssn[4], ssn[5], ssn[6], ssn[7],
+ ssn,
ds1685_rtc_print_regs(ctrla, bits[0]),
ds1685_rtc_print_regs(ctrlb, bits[1]),
ds1685_rtc_print_regs(ctrlc, bits[2]),
@@ -896,7 +896,7 @@ ds1685_rtc_proc(struct device *dev, struct seq_file *seq)
ds1685_rtc_print_regs(ctrl4a, bits[4]),
ds1685_rtc_print_regs(ctrl4b, bits[5]));
#else
- ssn[0], ssn[1], ssn[2], ssn[3], ssn[4], ssn[5], ssn[6], ssn[7]);
+ ssn);
#endif
return 0;
}
@@ -1114,7 +1114,7 @@ ds1685_rtc_sysfs_battery_show(struct device *dev,
ctrld = rtc->read(rtc, RTC_CTRL_D);
- return snprintf(buf, 13, "%s\n",
+ return sprintf(buf, "%s\n",
(ctrld & RTC_CTRL_D_VRT) ? "ok" : "not ok or N/A");
}
static DEVICE_ATTR(battery, S_IRUGO, ds1685_rtc_sysfs_battery_show, NULL);
@@ -1137,7 +1137,7 @@ ds1685_rtc_sysfs_auxbatt_show(struct device *dev,
ctrl4a = rtc->read(rtc, RTC_EXT_CTRL_4A);
ds1685_rtc_switch_to_bank0(rtc);
- return snprintf(buf, 13, "%s\n",
+ return sprintf(buf, "%s\n",
(ctrl4a & RTC_CTRL_4A_VRT2) ? "ok" : "not ok or N/A");
}
static DEVICE_ATTR(auxbatt, S_IRUGO, ds1685_rtc_sysfs_auxbatt_show, NULL);
@@ -1160,11 +1160,7 @@ ds1685_rtc_sysfs_serial_show(struct device *dev,
ds1685_rtc_get_ssn(rtc, ssn);
ds1685_rtc_switch_to_bank0(rtc);
- return snprintf(buf, 24, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
- ssn[0], ssn[1], ssn[2], ssn[3], ssn[4], ssn[5],
- ssn[6], ssn[7]);
-
- return 0;
+ return sprintf(buf, "%8phC\n", ssn);
}
static DEVICE_ATTR(serial, S_IRUGO, ds1685_rtc_sysfs_serial_show, NULL);
@@ -1287,7 +1283,7 @@ ds1685_rtc_sysfs_ctrl_regs_show(struct device *dev,
tmp = rtc->read(rtc, reg_info->reg) & reg_info->bit;
ds1685_rtc_switch_to_bank0(rtc);
- return snprintf(buf, 2, "%d\n", (tmp ? 1 : 0));
+ return sprintf(buf, "%d\n", (tmp ? 1 : 0));
}
/**
@@ -1623,7 +1619,7 @@ ds1685_rtc_sysfs_time_regs_show(struct device *dev,
tmp = ds1685_rtc_bcd2bin(rtc, tmp, bcd_reg_info->mask,
bin_reg_info->mask);
- return snprintf(buf, 4, "%d\n", tmp);
+ return sprintf(buf, "%d\n", tmp);
}
/**
diff --git a/drivers/rtc/rtc-ds2404.c b/drivers/rtc/rtc-ds2404.c
index 7885edd3d507..16310fe79d76 100644
--- a/drivers/rtc/rtc-ds2404.c
+++ b/drivers/rtc/rtc-ds2404.c
@@ -48,7 +48,7 @@ struct ds2404_gpio {
struct ds2404 {
struct ds2404_gpio *gpio;
- struct ds2404_chip_ops *ops;
+ const struct ds2404_chip_ops *ops;
struct rtc_device *rtc;
};
@@ -95,7 +95,7 @@ static void ds2404_gpio_unmap(struct ds2404 *chip)
gpio_free(ds2404_gpio[i].gpio);
}
-static struct ds2404_chip_ops ds2404_gpio_ops = {
+static const struct ds2404_chip_ops ds2404_gpio_ops = {
.map_io = ds2404_gpio_map,
.unmap_io = ds2404_gpio_unmap,
};
diff --git a/drivers/rtc/rtc-efi.c b/drivers/rtc/rtc-efi.c
index 3806961b4348..96d38609d803 100644
--- a/drivers/rtc/rtc-efi.c
+++ b/drivers/rtc/rtc-efi.c
@@ -191,11 +191,69 @@ static int efi_set_time(struct device *dev, struct rtc_time *tm)
return status == EFI_SUCCESS ? 0 : -EINVAL;
}
+static int efi_procfs(struct device *dev, struct seq_file *seq)
+{
+ efi_time_t eft, alm;
+ efi_time_cap_t cap;
+ efi_bool_t enabled, pending;
+
+ memset(&eft, 0, sizeof(eft));
+ memset(&alm, 0, sizeof(alm));
+ memset(&cap, 0, sizeof(cap));
+
+ efi.get_time(&eft, &cap);
+ efi.get_wakeup_time(&enabled, &pending, &alm);
+
+ seq_printf(seq,
+ "Time\t\t: %u:%u:%u.%09u\n"
+ "Date\t\t: %u-%u-%u\n"
+ "Daylight\t: %u\n",
+ eft.hour, eft.minute, eft.second, eft.nanosecond,
+ eft.year, eft.month, eft.day,
+ eft.daylight);
+
+ if (eft.timezone == EFI_UNSPECIFIED_TIMEZONE)
+ seq_puts(seq, "Timezone\t: unspecified\n");
+ else
+ /* XXX fixme: convert to string? */
+ seq_printf(seq, "Timezone\t: %u\n", eft.timezone);
+
+ seq_printf(seq,
+ "Alarm Time\t: %u:%u:%u.%09u\n"
+ "Alarm Date\t: %u-%u-%u\n"
+ "Alarm Daylight\t: %u\n"
+ "Enabled\t\t: %s\n"
+ "Pending\t\t: %s\n",
+ alm.hour, alm.minute, alm.second, alm.nanosecond,
+ alm.year, alm.month, alm.day,
+ alm.daylight,
+ enabled == 1 ? "yes" : "no",
+ pending == 1 ? "yes" : "no");
+
+ if (eft.timezone == EFI_UNSPECIFIED_TIMEZONE)
+ seq_puts(seq, "Timezone\t: unspecified\n");
+ else
+ /* XXX fixme: convert to string? */
+ seq_printf(seq, "Timezone\t: %u\n", alm.timezone);
+
+ /*
+ * now prints the capabilities
+ */
+ seq_printf(seq,
+ "Resolution\t: %u\n"
+ "Accuracy\t: %u\n"
+ "SetstoZero\t: %u\n",
+ cap.resolution, cap.accuracy, cap.sets_to_zero);
+
+ return 0;
+}
+
static const struct rtc_class_ops efi_rtc_ops = {
- .read_time = efi_read_time,
- .set_time = efi_set_time,
- .read_alarm = efi_read_alarm,
- .set_alarm = efi_set_alarm,
+ .read_time = efi_read_time,
+ .set_time = efi_set_time,
+ .read_alarm = efi_read_alarm,
+ .set_alarm = efi_set_alarm,
+ .proc = efi_procfs,
};
static int __init efi_rtc_probe(struct platform_device *dev)
diff --git a/drivers/rtc/rtc-gemini.c b/drivers/rtc/rtc-gemini.c
index e84184647d15..f46b6d46a51b 100644
--- a/drivers/rtc/rtc-gemini.c
+++ b/drivers/rtc/rtc-gemini.c
@@ -156,7 +156,6 @@ static int gemini_rtc_remove(struct platform_device *pdev)
struct gemini_rtc *rtc = platform_get_drvdata(pdev);
rtc_device_unregister(rtc->rtc_dev);
- platform_set_drvdata(pdev, NULL);
return 0;
}
diff --git a/drivers/rtc/rtc-imxdi.c b/drivers/rtc/rtc-imxdi.c
index 7bffd7f0e306..8d8049bdfaf6 100644
--- a/drivers/rtc/rtc-imxdi.c
+++ b/drivers/rtc/rtc-imxdi.c
@@ -303,7 +303,7 @@ static int di_handle_invalid_state(struct imxdi_dev *imxdi, u32 dsr)
sec = readl(imxdi->ioaddr + DTCMR);
if (sec != 0)
dev_warn(&imxdi->pdev->dev,
- "The security violation has happend at %u seconds\n",
+ "The security violation has happened at %u seconds\n",
sec);
/*
* the timer cannot be set/modified if
diff --git a/drivers/rtc/rtc-lpc32xx.c b/drivers/rtc/rtc-lpc32xx.c
index f923f7324788..887871c3d526 100644
--- a/drivers/rtc/rtc-lpc32xx.c
+++ b/drivers/rtc/rtc-lpc32xx.c
@@ -205,7 +205,7 @@ static int lpc32xx_rtc_probe(struct platform_device *pdev)
u32 tmp;
rtcirq = platform_get_irq(pdev, 0);
- if (rtcirq < 0 || rtcirq >= NR_IRQS) {
+ if (rtcirq < 0) {
dev_warn(&pdev->dev, "Can't get interrupt resource\n");
rtcirq = -1;
}
diff --git a/drivers/rtc/rtc-pcf8523.c b/drivers/rtc/rtc-pcf8523.c
index e7ebcc0b7e59..988566caaaa6 100644
--- a/drivers/rtc/rtc-pcf8523.c
+++ b/drivers/rtc/rtc-pcf8523.c
@@ -219,6 +219,17 @@ static int pcf8523_rtc_set_time(struct device *dev, struct rtc_time *tm)
u8 regs[8];
int err;
+ /*
+ * The hardware can only store values between 0 and 99 in it's YEAR
+ * register (with 99 overflowing to 0 on increment).
+ * After 2100-02-28 we could start interpreting the year to be in the
+ * interval [2100, 2199], but there is no path to switch in a smooth way
+ * because the chip handles YEAR=0x00 (and the out-of-spec
+ * YEAR=0xa0) as a leap year, but 2100 isn't.
+ */
+ if (tm->tm_year < 100 || tm->tm_year >= 200)
+ return -EINVAL;
+
err = pcf8523_stop_rtc(client);
if (err < 0)
return err;
diff --git a/drivers/rtc/rtc-proc.c b/drivers/rtc/rtc-proc.c
index ffa69e1c9245..31e7e23cc5be 100644
--- a/drivers/rtc/rtc-proc.c
+++ b/drivers/rtc/rtc-proc.c
@@ -112,19 +112,21 @@ static int rtc_proc_open(struct inode *inode, struct file *file)
int ret;
struct rtc_device *rtc = PDE_DATA(inode);
- if (!try_module_get(THIS_MODULE))
+ if (!try_module_get(rtc->owner))
return -ENODEV;
ret = single_open(file, rtc_proc_show, rtc);
if (ret)
- module_put(THIS_MODULE);
+ module_put(rtc->owner);
return ret;
}
static int rtc_proc_release(struct inode *inode, struct file *file)
{
int res = single_release(inode, file);
- module_put(THIS_MODULE);
+ struct rtc_device *rtc = PDE_DATA(inode);
+
+ module_put(rtc->owner);
return res;
}
diff --git a/drivers/rtc/rtc-rv8803.c b/drivers/rtc/rtc-rv8803.c
index e7329e21bfe3..7155c0816aa6 100644
--- a/drivers/rtc/rtc-rv8803.c
+++ b/drivers/rtc/rtc-rv8803.c
@@ -61,7 +61,7 @@ static irqreturn_t rv8803_handle_irq(int irq, void *dev_id)
struct i2c_client *client = dev_id;
struct rv8803_data *rv8803 = i2c_get_clientdata(client);
unsigned long events = 0;
- u8 flags;
+ int flags;
spin_lock(&rv8803->flags_lock);
@@ -502,6 +502,7 @@ static int rv8803_remove(struct i2c_client *client)
static const struct i2c_device_id rv8803_id[] = {
{ "rv8803", 0 },
+ { "rx8900", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, rv8803_id);
diff --git a/drivers/rtc/rtc-rx8010.c b/drivers/rtc/rtc-rx8010.c
new file mode 100644
index 000000000000..772d221ec2d9
--- /dev/null
+++ b/drivers/rtc/rtc-rx8010.c
@@ -0,0 +1,523 @@
+/*
+ * Driver for the Epson RTC module RX-8010 SJ
+ *
+ * Copyright(C) Timesys Corporation 2015
+ * Copyright(C) General Electric Company 2015
+ *
+ * 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.
+ *
+ */
+
+#include <linux/bcd.h>
+#include <linux/bitops.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/rtc.h>
+
+#define RX8010_SEC 0x10
+#define RX8010_MIN 0x11
+#define RX8010_HOUR 0x12
+#define RX8010_WDAY 0x13
+#define RX8010_MDAY 0x14
+#define RX8010_MONTH 0x15
+#define RX8010_YEAR 0x16
+#define RX8010_YEAR 0x16
+#define RX8010_RESV17 0x17
+#define RX8010_ALMIN 0x18
+#define RX8010_ALHOUR 0x19
+#define RX8010_ALWDAY 0x1A
+#define RX8010_TCOUNT0 0x1B
+#define RX8010_TCOUNT1 0x1C
+#define RX8010_EXT 0x1D
+#define RX8010_FLAG 0x1E
+#define RX8010_CTRL 0x1F
+/* 0x20 to 0x2F are user registers */
+#define RX8010_RESV30 0x30
+#define RX8010_RESV31 0x32
+#define RX8010_IRQ 0x32
+
+#define RX8010_EXT_WADA BIT(3)
+
+#define RX8010_FLAG_VLF BIT(1)
+#define RX8010_FLAG_AF BIT(3)
+#define RX8010_FLAG_TF BIT(4)
+#define RX8010_FLAG_UF BIT(5)
+
+#define RX8010_CTRL_AIE BIT(3)
+#define RX8010_CTRL_UIE BIT(5)
+#define RX8010_CTRL_STOP BIT(6)
+#define RX8010_CTRL_TEST BIT(7)
+
+#define RX8010_ALARM_AE BIT(7)
+
+static const struct i2c_device_id rx8010_id[] = {
+ { "rx8010", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, rx8010_id);
+
+struct rx8010_data {
+ struct i2c_client *client;
+ struct rtc_device *rtc;
+ u8 ctrlreg;
+ spinlock_t flags_lock;
+};
+
+static irqreturn_t rx8010_irq_1_handler(int irq, void *dev_id)
+{
+ struct i2c_client *client = dev_id;
+ struct rx8010_data *rx8010 = i2c_get_clientdata(client);
+ int flagreg;
+
+ spin_lock(&rx8010->flags_lock);
+
+ flagreg = i2c_smbus_read_byte_data(client, RX8010_FLAG);
+
+ if (flagreg <= 0) {
+ spin_unlock(&rx8010->flags_lock);
+ return IRQ_NONE;
+ }
+
+ if (flagreg & RX8010_FLAG_VLF)
+ dev_warn(&client->dev, "Frequency stop detected\n");
+
+ if (flagreg & RX8010_FLAG_TF) {
+ flagreg &= ~RX8010_FLAG_TF;
+ rtc_update_irq(rx8010->rtc, 1, RTC_PF | RTC_IRQF);
+ }
+
+ if (flagreg & RX8010_FLAG_AF) {
+ flagreg &= ~RX8010_FLAG_AF;
+ rtc_update_irq(rx8010->rtc, 1, RTC_AF | RTC_IRQF);
+ }
+
+ if (flagreg & RX8010_FLAG_UF) {
+ flagreg &= ~RX8010_FLAG_UF;
+ rtc_update_irq(rx8010->rtc, 1, RTC_UF | RTC_IRQF);
+ }
+
+ i2c_smbus_write_byte_data(client, RX8010_FLAG, flagreg);
+
+ spin_unlock(&rx8010->flags_lock);
+ return IRQ_HANDLED;
+}
+
+static int rx8010_get_time(struct device *dev, struct rtc_time *dt)
+{
+ struct rx8010_data *rx8010 = dev_get_drvdata(dev);
+ u8 date[7];
+ int flagreg;
+ int err;
+
+ flagreg = i2c_smbus_read_byte_data(rx8010->client, RX8010_FLAG);
+ if (flagreg < 0)
+ return flagreg;
+
+ if (flagreg & RX8010_FLAG_VLF) {
+ dev_warn(dev, "Frequency stop detected\n");
+ return -EINVAL;
+ }
+
+ err = i2c_smbus_read_i2c_block_data(rx8010->client, RX8010_SEC,
+ 7, date);
+ if (err != 7)
+ return err < 0 ? err : -EIO;
+
+ dt->tm_sec = bcd2bin(date[RX8010_SEC - RX8010_SEC] & 0x7f);
+ dt->tm_min = bcd2bin(date[RX8010_MIN - RX8010_SEC] & 0x7f);
+ dt->tm_hour = bcd2bin(date[RX8010_HOUR - RX8010_SEC] & 0x3f);
+ dt->tm_mday = bcd2bin(date[RX8010_MDAY - RX8010_SEC] & 0x3f);
+ dt->tm_mon = bcd2bin(date[RX8010_MONTH - RX8010_SEC] & 0x1f) - 1;
+ dt->tm_year = bcd2bin(date[RX8010_YEAR - RX8010_SEC]) + 100;
+ dt->tm_wday = ffs(date[RX8010_WDAY - RX8010_SEC] & 0x7f);
+
+ return rtc_valid_tm(dt);
+}
+
+static int rx8010_set_time(struct device *dev, struct rtc_time *dt)
+{
+ struct rx8010_data *rx8010 = dev_get_drvdata(dev);
+ u8 date[7];
+ int ctrl, flagreg;
+ int ret;
+ unsigned long irqflags;
+
+ if ((dt->tm_year < 100) || (dt->tm_year > 199))
+ return -EINVAL;
+
+ /* set STOP bit before changing clock/calendar */
+ ctrl = i2c_smbus_read_byte_data(rx8010->client, RX8010_CTRL);
+ if (ctrl < 0)
+ return ctrl;
+ rx8010->ctrlreg = ctrl | RX8010_CTRL_STOP;
+ ret = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL,
+ rx8010->ctrlreg);
+ if (ret < 0)
+ return ret;
+
+ date[RX8010_SEC - RX8010_SEC] = bin2bcd(dt->tm_sec);
+ date[RX8010_MIN - RX8010_SEC] = bin2bcd(dt->tm_min);
+ date[RX8010_HOUR - RX8010_SEC] = bin2bcd(dt->tm_hour);
+ date[RX8010_MDAY - RX8010_SEC] = bin2bcd(dt->tm_mday);
+ date[RX8010_MONTH - RX8010_SEC] = bin2bcd(dt->tm_mon + 1);
+ date[RX8010_YEAR - RX8010_SEC] = bin2bcd(dt->tm_year - 100);
+ date[RX8010_WDAY - RX8010_SEC] = bin2bcd(1 << dt->tm_wday);
+
+ ret = i2c_smbus_write_i2c_block_data(rx8010->client,
+ RX8010_SEC, 7, date);
+ if (ret < 0)
+ return ret;
+
+ /* clear STOP bit after changing clock/calendar */
+ ctrl = i2c_smbus_read_byte_data(rx8010->client, RX8010_CTRL);
+ if (ctrl < 0)
+ return ctrl;
+ rx8010->ctrlreg = ctrl & ~RX8010_CTRL_STOP;
+ ret = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL,
+ rx8010->ctrlreg);
+ if (ret < 0)
+ return ret;
+
+ spin_lock_irqsave(&rx8010->flags_lock, irqflags);
+
+ flagreg = i2c_smbus_read_byte_data(rx8010->client, RX8010_FLAG);
+ if (flagreg < 0) {
+ spin_unlock_irqrestore(&rx8010->flags_lock, irqflags);
+ return flagreg;
+ }
+
+ if (flagreg & RX8010_FLAG_VLF)
+ ret = i2c_smbus_write_byte_data(rx8010->client, RX8010_FLAG,
+ flagreg & ~RX8010_FLAG_VLF);
+
+ spin_unlock_irqrestore(&rx8010->flags_lock, irqflags);
+
+ return 0;
+}
+
+static int rx8010_init_client(struct i2c_client *client)
+{
+ struct rx8010_data *rx8010 = i2c_get_clientdata(client);
+ u8 ctrl[2];
+ int need_clear = 0, err = 0;
+
+ /* Initialize reserved registers as specified in datasheet */
+ err = i2c_smbus_write_byte_data(client, RX8010_RESV17, 0xD8);
+ if (err < 0)
+ return err;
+
+ err = i2c_smbus_write_byte_data(client, RX8010_RESV30, 0x00);
+ if (err < 0)
+ return err;
+
+ err = i2c_smbus_write_byte_data(client, RX8010_RESV31, 0x08);
+ if (err < 0)
+ return err;
+
+ err = i2c_smbus_write_byte_data(client, RX8010_IRQ, 0x00);
+ if (err < 0)
+ return err;
+
+ err = i2c_smbus_read_i2c_block_data(rx8010->client, RX8010_FLAG,
+ 2, ctrl);
+ if (err != 2)
+ return err < 0 ? err : -EIO;
+
+ if (ctrl[0] & RX8010_FLAG_VLF)
+ dev_warn(&client->dev, "Frequency stop was detected\n");
+
+ if (ctrl[0] & RX8010_FLAG_AF) {
+ dev_warn(&client->dev, "Alarm was detected\n");
+ need_clear = 1;
+ }
+
+ if (ctrl[0] & RX8010_FLAG_TF)
+ need_clear = 1;
+
+ if (ctrl[0] & RX8010_FLAG_UF)
+ need_clear = 1;
+
+ if (need_clear) {
+ ctrl[0] &= ~(RX8010_FLAG_AF | RX8010_FLAG_TF | RX8010_FLAG_UF);
+ err = i2c_smbus_write_byte_data(client, RX8010_FLAG, ctrl[0]);
+ if (err < 0)
+ return err;
+ }
+
+ rx8010->ctrlreg = (ctrl[1] & ~RX8010_CTRL_TEST);
+
+ return err;
+}
+
+static int rx8010_read_alarm(struct device *dev, struct rtc_wkalrm *t)
+{
+ struct rx8010_data *rx8010 = dev_get_drvdata(dev);
+ struct i2c_client *client = rx8010->client;
+ u8 alarmvals[3];
+ int flagreg;
+ int err;
+
+ err = i2c_smbus_read_i2c_block_data(client, RX8010_ALMIN, 3, alarmvals);
+ if (err != 3)
+ return err < 0 ? err : -EIO;
+
+ flagreg = i2c_smbus_read_byte_data(client, RX8010_FLAG);
+ if (flagreg < 0)
+ return flagreg;
+
+ t->time.tm_sec = 0;
+ t->time.tm_min = bcd2bin(alarmvals[0] & 0x7f);
+ t->time.tm_hour = bcd2bin(alarmvals[1] & 0x3f);
+
+ if (alarmvals[2] & RX8010_ALARM_AE)
+ t->time.tm_mday = -1;
+ else
+ t->time.tm_mday = bcd2bin(alarmvals[2] & 0x7f);
+
+ t->time.tm_wday = -1;
+ t->time.tm_mon = -1;
+ t->time.tm_year = -1;
+
+ t->enabled = !!(rx8010->ctrlreg & RX8010_CTRL_AIE);
+ t->pending = (flagreg & RX8010_FLAG_AF) && t->enabled;
+
+ return err;
+}
+
+static int rx8010_set_alarm(struct device *dev, struct rtc_wkalrm *t)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct rx8010_data *rx8010 = dev_get_drvdata(dev);
+ u8 alarmvals[3];
+ int extreg, flagreg;
+ int err;
+ unsigned long irqflags;
+
+ spin_lock_irqsave(&rx8010->flags_lock, irqflags);
+ flagreg = i2c_smbus_read_byte_data(client, RX8010_FLAG);
+ if (flagreg < 0) {
+ spin_unlock_irqrestore(&rx8010->flags_lock, irqflags);
+ return flagreg;
+ }
+
+ if (rx8010->ctrlreg & (RX8010_CTRL_AIE | RX8010_CTRL_UIE)) {
+ rx8010->ctrlreg &= ~(RX8010_CTRL_AIE | RX8010_CTRL_UIE);
+ err = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL,
+ rx8010->ctrlreg);
+ if (err < 0) {
+ spin_unlock_irqrestore(&rx8010->flags_lock, irqflags);
+ return err;
+ }
+ }
+
+ flagreg &= ~RX8010_FLAG_AF;
+ err = i2c_smbus_write_byte_data(rx8010->client, RX8010_FLAG, flagreg);
+ spin_unlock_irqrestore(&rx8010->flags_lock, irqflags);
+ if (err < 0)
+ return err;
+
+ alarmvals[0] = bin2bcd(t->time.tm_min);
+ alarmvals[1] = bin2bcd(t->time.tm_hour);
+ alarmvals[2] = bin2bcd(t->time.tm_mday);
+
+ err = i2c_smbus_write_i2c_block_data(rx8010->client, RX8010_ALMIN,
+ 2, alarmvals);
+ if (err < 0)
+ return err;
+
+ extreg = i2c_smbus_read_byte_data(client, RX8010_EXT);
+ if (extreg < 0)
+ return extreg;
+
+ extreg |= RX8010_EXT_WADA;
+ err = i2c_smbus_write_byte_data(rx8010->client, RX8010_EXT, extreg);
+ if (err < 0)
+ return err;
+
+ if (alarmvals[2] == 0)
+ alarmvals[2] |= RX8010_ALARM_AE;
+
+ err = i2c_smbus_write_byte_data(rx8010->client, RX8010_ALWDAY,
+ alarmvals[2]);
+ if (err < 0)
+ return err;
+
+ if (t->enabled) {
+ if (rx8010->rtc->uie_rtctimer.enabled)
+ rx8010->ctrlreg |= RX8010_CTRL_UIE;
+ if (rx8010->rtc->aie_timer.enabled)
+ rx8010->ctrlreg |=
+ (RX8010_CTRL_AIE | RX8010_CTRL_UIE);
+
+ err = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL,
+ rx8010->ctrlreg);
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+
+static int rx8010_alarm_irq_enable(struct device *dev,
+ unsigned int enabled)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct rx8010_data *rx8010 = dev_get_drvdata(dev);
+ int flagreg;
+ u8 ctrl;
+ int err;
+
+ ctrl = rx8010->ctrlreg;
+
+ if (enabled) {
+ if (rx8010->rtc->uie_rtctimer.enabled)
+ ctrl |= RX8010_CTRL_UIE;
+ if (rx8010->rtc->aie_timer.enabled)
+ ctrl |= (RX8010_CTRL_AIE | RX8010_CTRL_UIE);
+ } else {
+ if (!rx8010->rtc->uie_rtctimer.enabled)
+ ctrl &= ~RX8010_CTRL_UIE;
+ if (!rx8010->rtc->aie_timer.enabled)
+ ctrl &= ~RX8010_CTRL_AIE;
+ }
+
+ flagreg = i2c_smbus_read_byte_data(client, RX8010_FLAG);
+ if (flagreg < 0)
+ return flagreg;
+
+ flagreg &= ~RX8010_FLAG_AF;
+ err = i2c_smbus_write_byte_data(rx8010->client, RX8010_FLAG, flagreg);
+ if (err < 0)
+ return err;
+
+ if (ctrl != rx8010->ctrlreg) {
+ rx8010->ctrlreg = ctrl;
+ err = i2c_smbus_write_byte_data(rx8010->client, RX8010_CTRL,
+ rx8010->ctrlreg);
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+
+static int rx8010_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct rx8010_data *rx8010 = dev_get_drvdata(dev);
+ int ret, tmp;
+ int flagreg;
+ unsigned long irqflags;
+
+ switch (cmd) {
+ case RTC_VL_READ:
+ flagreg = i2c_smbus_read_byte_data(rx8010->client, RX8010_FLAG);
+ if (flagreg < 0)
+ return flagreg;
+
+ tmp = !!(flagreg & RX8010_FLAG_VLF);
+ if (copy_to_user((void __user *)arg, &tmp, sizeof(int)))
+ return -EFAULT;
+
+ return 0;
+
+ case RTC_VL_CLR:
+ spin_lock_irqsave(&rx8010->flags_lock, irqflags);
+ flagreg = i2c_smbus_read_byte_data(rx8010->client, RX8010_FLAG);
+ if (flagreg < 0) {
+ spin_unlock_irqrestore(&rx8010->flags_lock, irqflags);
+ return flagreg;
+ }
+
+ flagreg &= ~RX8010_FLAG_VLF;
+ ret = i2c_smbus_write_byte_data(client, RX8010_FLAG, flagreg);
+ spin_unlock_irqrestore(&rx8010->flags_lock, irqflags);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+
+static struct rtc_class_ops rx8010_rtc_ops = {
+ .read_time = rx8010_get_time,
+ .set_time = rx8010_set_time,
+ .ioctl = rx8010_ioctl,
+};
+
+static int rx8010_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
+ struct rx8010_data *rx8010;
+ int err = 0;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA
+ | I2C_FUNC_SMBUS_I2C_BLOCK)) {
+ dev_err(&adapter->dev, "doesn't support required functionality\n");
+ return -EIO;
+ }
+
+ rx8010 = devm_kzalloc(&client->dev, sizeof(struct rx8010_data),
+ GFP_KERNEL);
+ if (!rx8010)
+ return -ENOMEM;
+
+ rx8010->client = client;
+ i2c_set_clientdata(client, rx8010);
+
+ spin_lock_init(&rx8010->flags_lock);
+
+ err = rx8010_init_client(client);
+ if (err)
+ return err;
+
+ if (client->irq > 0) {
+ dev_info(&client->dev, "IRQ %d supplied\n", client->irq);
+ err = devm_request_threaded_irq(&client->dev, client->irq, NULL,
+ rx8010_irq_1_handler,
+ IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+ "rx8010", client);
+
+ if (err) {
+ dev_err(&client->dev, "unable to request IRQ\n");
+ client->irq = 0;
+ } else {
+ rx8010_rtc_ops.read_alarm = rx8010_read_alarm;
+ rx8010_rtc_ops.set_alarm = rx8010_set_alarm;
+ rx8010_rtc_ops.alarm_irq_enable = rx8010_alarm_irq_enable;
+ }
+ }
+
+ rx8010->rtc = devm_rtc_device_register(&client->dev, client->name,
+ &rx8010_rtc_ops, THIS_MODULE);
+
+ if (IS_ERR(rx8010->rtc)) {
+ dev_err(&client->dev, "unable to register the class device\n");
+ return PTR_ERR(rx8010->rtc);
+ }
+
+ rx8010->rtc->max_user_freq = 1;
+
+ return err;
+}
+
+static struct i2c_driver rx8010_driver = {
+ .driver = {
+ .name = "rtc-rx8010",
+ },
+ .probe = rx8010_probe,
+ .id_table = rx8010_id,
+};
+
+module_i2c_driver(rx8010_driver);
+
+MODULE_AUTHOR("Akshay Bhat <akshay.bhat@timesys.com>");
+MODULE_DESCRIPTION("Epson RX8010SJ RTC driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
index 0d68a85dd429..7407d7394bb4 100644
--- a/drivers/rtc/rtc-s5m.c
+++ b/drivers/rtc/rtc-s5m.c
@@ -38,7 +38,22 @@
*/
#define UDR_READ_RETRY_CNT 5
-/* Registers used by the driver which are different between chipsets. */
+/*
+ * Registers used by the driver which are different between chipsets.
+ *
+ * Operations like read time and write alarm/time require updating
+ * specific fields in UDR register. These fields usually are auto-cleared
+ * (with some exceptions).
+ *
+ * Table of operations per device:
+ *
+ * Device | Write time | Read time | Write alarm
+ * =================================================
+ * S5M8767 | UDR + TIME | | UDR
+ * S2MPS11/14 | WUDR | RUDR | WUDR + RUDR
+ * S2MPS13 | WUDR | RUDR | WUDR + AUDR
+ * S2MPS15 | WUDR | RUDR | AUDR
+ */
struct s5m_rtc_reg_config {
/* Number of registers used for setting time/alarm0/alarm1 */
unsigned int regs_count;
@@ -55,9 +70,16 @@ struct s5m_rtc_reg_config {
* will enable update of time or alarm register. Then it will be
* auto-cleared after successful update.
*/
- unsigned int rtc_udr_update;
- /* Mask for UDR field in 'rtc_udr_update' register */
- unsigned int rtc_udr_mask;
+ unsigned int udr_update;
+ /* Auto-cleared mask in UDR field for writing time and alarm */
+ unsigned int autoclear_udr_mask;
+ /*
+ * Masks in UDR field for time and alarm operations.
+ * The read time mask can be 0. Rest should not.
+ */
+ unsigned int read_time_udr_mask;
+ unsigned int write_time_udr_mask;
+ unsigned int write_alarm_udr_mask;
};
/* Register map for S5M8763 and S5M8767 */
@@ -67,22 +89,56 @@ static const struct s5m_rtc_reg_config s5m_rtc_regs = {
.ctrl = S5M_ALARM1_CONF,
.alarm0 = S5M_ALARM0_SEC,
.alarm1 = S5M_ALARM1_SEC,
- .rtc_udr_update = S5M_RTC_UDR_CON,
- .rtc_udr_mask = S5M_RTC_UDR_MASK,
+ .udr_update = S5M_RTC_UDR_CON,
+ .autoclear_udr_mask = S5M_RTC_UDR_MASK,
+ .read_time_udr_mask = 0, /* Not needed */
+ .write_time_udr_mask = S5M_RTC_UDR_MASK | S5M_RTC_TIME_EN_MASK,
+ .write_alarm_udr_mask = S5M_RTC_UDR_MASK,
+};
+
+/* Register map for S2MPS13 */
+static const struct s5m_rtc_reg_config s2mps13_rtc_regs = {
+ .regs_count = 7,
+ .time = S2MPS_RTC_SEC,
+ .ctrl = S2MPS_RTC_CTRL,
+ .alarm0 = S2MPS_ALARM0_SEC,
+ .alarm1 = S2MPS_ALARM1_SEC,
+ .udr_update = S2MPS_RTC_UDR_CON,
+ .autoclear_udr_mask = S2MPS_RTC_WUDR_MASK,
+ .read_time_udr_mask = S2MPS_RTC_RUDR_MASK,
+ .write_time_udr_mask = S2MPS_RTC_WUDR_MASK,
+ .write_alarm_udr_mask = S2MPS_RTC_WUDR_MASK | S2MPS13_RTC_AUDR_MASK,
+};
+
+/* Register map for S2MPS11/14 */
+static const struct s5m_rtc_reg_config s2mps14_rtc_regs = {
+ .regs_count = 7,
+ .time = S2MPS_RTC_SEC,
+ .ctrl = S2MPS_RTC_CTRL,
+ .alarm0 = S2MPS_ALARM0_SEC,
+ .alarm1 = S2MPS_ALARM1_SEC,
+ .udr_update = S2MPS_RTC_UDR_CON,
+ .autoclear_udr_mask = S2MPS_RTC_WUDR_MASK,
+ .read_time_udr_mask = S2MPS_RTC_RUDR_MASK,
+ .write_time_udr_mask = S2MPS_RTC_WUDR_MASK,
+ .write_alarm_udr_mask = S2MPS_RTC_WUDR_MASK | S2MPS_RTC_RUDR_MASK,
};
/*
- * Register map for S2MPS14.
- * It may be also suitable for S2MPS11 but this was not tested.
+ * Register map for S2MPS15 - in comparison to S2MPS14 the WUDR and AUDR bits
+ * are swapped.
*/
-static const struct s5m_rtc_reg_config s2mps_rtc_regs = {
+static const struct s5m_rtc_reg_config s2mps15_rtc_regs = {
.regs_count = 7,
.time = S2MPS_RTC_SEC,
.ctrl = S2MPS_RTC_CTRL,
.alarm0 = S2MPS_ALARM0_SEC,
.alarm1 = S2MPS_ALARM1_SEC,
- .rtc_udr_update = S2MPS_RTC_UDR_CON,
- .rtc_udr_mask = S2MPS_RTC_WUDR_MASK,
+ .udr_update = S2MPS_RTC_UDR_CON,
+ .autoclear_udr_mask = S2MPS_RTC_WUDR_MASK,
+ .read_time_udr_mask = S2MPS_RTC_RUDR_MASK,
+ .write_time_udr_mask = S2MPS15_RTC_WUDR_MASK,
+ .write_alarm_udr_mask = S2MPS15_RTC_AUDR_MASK,
};
struct s5m_rtc_info {
@@ -166,9 +222,8 @@ static inline int s5m8767_wait_for_udr_update(struct s5m_rtc_info *info)
unsigned int data;
do {
- ret = regmap_read(info->regmap, info->regs->rtc_udr_update,
- &data);
- } while (--retry && (data & info->regs->rtc_udr_mask) && !ret);
+ ret = regmap_read(info->regmap, info->regs->udr_update, &data);
+ } while (--retry && (data & info->regs->autoclear_udr_mask) && !ret);
if (!retry)
dev_err(info->dev, "waiting for UDR update, reached max number of retries\n");
@@ -214,30 +269,15 @@ static inline int s5m8767_rtc_set_time_reg(struct s5m_rtc_info *info)
int ret;
unsigned int data;
- ret = regmap_read(info->regmap, info->regs->rtc_udr_update, &data);
+ ret = regmap_read(info->regmap, info->regs->udr_update, &data);
if (ret < 0) {
dev_err(info->dev, "failed to read update reg(%d)\n", ret);
return ret;
}
- switch (info->device_type) {
- case S5M8763X:
- case S5M8767X:
- data |= info->regs->rtc_udr_mask | S5M_RTC_TIME_EN_MASK;
- case S2MPS15X:
- /* As per UM, for write time register, set WUDR bit to high */
- data |= S2MPS15_RTC_WUDR_MASK;
- break;
- case S2MPS14X:
- case S2MPS13X:
- data |= info->regs->rtc_udr_mask;
- break;
- default:
- return -EINVAL;
- }
+ data |= info->regs->write_time_udr_mask;
-
- ret = regmap_write(info->regmap, info->regs->rtc_udr_update, data);
+ ret = regmap_write(info->regmap, info->regs->udr_update, data);
if (ret < 0) {
dev_err(info->dev, "failed to write update reg(%d)\n", ret);
return ret;
@@ -253,35 +293,29 @@ static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info)
int ret;
unsigned int data;
- ret = regmap_read(info->regmap, info->regs->rtc_udr_update, &data);
+ ret = regmap_read(info->regmap, info->regs->udr_update, &data);
if (ret < 0) {
dev_err(info->dev, "%s: fail to read update reg(%d)\n",
__func__, ret);
return ret;
}
- data |= info->regs->rtc_udr_mask;
+ data |= info->regs->write_alarm_udr_mask;
switch (info->device_type) {
case S5M8763X:
case S5M8767X:
data &= ~S5M_RTC_TIME_EN_MASK;
break;
case S2MPS15X:
- /* As per UM, for write alarm, set A_UDR(bit[4]) to high
- * rtc_udr_mask above sets bit[4]
- */
- break;
case S2MPS14X:
- data |= S2MPS_RTC_RUDR_MASK;
- break;
case S2MPS13X:
- data |= S2MPS13_RTC_AUDR_MASK;
+ /* No exceptions needed */
break;
default:
return -EINVAL;
}
- ret = regmap_write(info->regmap, info->regs->rtc_udr_update, data);
+ ret = regmap_write(info->regmap, info->regs->udr_update, data);
if (ret < 0) {
dev_err(info->dev, "%s: fail to write update reg(%d)\n",
__func__, ret);
@@ -292,7 +326,7 @@ static inline int s5m8767_rtc_set_alarm_reg(struct s5m_rtc_info *info)
/* On S2MPS13 the AUDR is not auto-cleared */
if (info->device_type == S2MPS13X)
- regmap_update_bits(info->regmap, info->regs->rtc_udr_update,
+ regmap_update_bits(info->regmap, info->regs->udr_update,
S2MPS13_RTC_AUDR_MASK, 0);
return ret;
@@ -336,11 +370,11 @@ static int s5m_rtc_read_time(struct device *dev, struct rtc_time *tm)
u8 data[info->regs->regs_count];
int ret;
- if (info->device_type == S2MPS15X || info->device_type == S2MPS14X ||
- info->device_type == S2MPS13X) {
+ if (info->regs->read_time_udr_mask) {
ret = regmap_update_bits(info->regmap,
- info->regs->rtc_udr_update,
- S2MPS_RTC_RUDR_MASK, S2MPS_RTC_RUDR_MASK);
+ info->regs->udr_update,
+ info->regs->read_time_udr_mask,
+ info->regs->read_time_udr_mask);
if (ret) {
dev_err(dev,
"Failed to prepare registers for time reading: %d\n",
@@ -707,10 +741,18 @@ static int s5m_rtc_probe(struct platform_device *pdev)
switch (platform_get_device_id(pdev)->driver_data) {
case S2MPS15X:
+ regmap_cfg = &s2mps14_rtc_regmap_config;
+ info->regs = &s2mps15_rtc_regs;
+ alarm_irq = S2MPS14_IRQ_RTCA0;
+ break;
case S2MPS14X:
+ regmap_cfg = &s2mps14_rtc_regmap_config;
+ info->regs = &s2mps14_rtc_regs;
+ alarm_irq = S2MPS14_IRQ_RTCA0;
+ break;
case S2MPS13X:
regmap_cfg = &s2mps14_rtc_regmap_config;
- info->regs = &s2mps_rtc_regs;
+ info->regs = &s2mps13_rtc_regs;
alarm_irq = S2MPS14_IRQ_RTCA0;
break;
case S5M8763X:
diff --git a/drivers/rtc/rtc-sunxi.c b/drivers/rtc/rtc-sunxi.c
index 52543ae37c98..abada609ddc7 100644
--- a/drivers/rtc/rtc-sunxi.c
+++ b/drivers/rtc/rtc-sunxi.c
@@ -133,7 +133,7 @@ struct sunxi_rtc_data_year {
unsigned char leap_shift; /* bit shift to get the leap year */
};
-static struct sunxi_rtc_data_year data_year_param[] = {
+static const struct sunxi_rtc_data_year data_year_param[] = {
[0] = {
.min = 2010,
.max = 2073,
@@ -151,7 +151,7 @@ static struct sunxi_rtc_data_year data_year_param[] = {
struct sunxi_rtc_dev {
struct rtc_device *rtc;
struct device *dev;
- struct sunxi_rtc_data_year *data_year;
+ const struct sunxi_rtc_data_year *data_year;
void __iomem *base;
int irq;
};
@@ -175,7 +175,7 @@ static irqreturn_t sunxi_rtc_alarmirq(int irq, void *id)
return IRQ_NONE;
}
-static void sunxi_rtc_setaie(int to, struct sunxi_rtc_dev *chip)
+static void sunxi_rtc_setaie(unsigned int to, struct sunxi_rtc_dev *chip)
{
u32 alrm_val = 0;
u32 alrm_irq_val = 0;
@@ -343,7 +343,7 @@ static int sunxi_rtc_settime(struct device *dev, struct rtc_time *rtc_tm)
struct sunxi_rtc_dev *chip = dev_get_drvdata(dev);
u32 date = 0;
u32 time = 0;
- int year;
+ unsigned int year;
/*
* the input rtc_tm->tm_year is the offset relative to 1900. We use
@@ -353,8 +353,8 @@ static int sunxi_rtc_settime(struct device *dev, struct rtc_time *rtc_tm)
year = rtc_tm->tm_year + 1900;
if (year < chip->data_year->min || year > chip->data_year->max) {
- dev_err(dev, "rtc only supports year in range %d - %d\n",
- chip->data_year->min, chip->data_year->max);
+ dev_err(dev, "rtc only supports year in range %u - %u\n",
+ chip->data_year->min, chip->data_year->max);
return -EINVAL;
}
@@ -436,7 +436,6 @@ static int sunxi_rtc_probe(struct platform_device *pdev)
{
struct sunxi_rtc_dev *chip;
struct resource *res;
- const struct of_device_id *of_id;
int ret;
chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
@@ -463,12 +462,11 @@ static int sunxi_rtc_probe(struct platform_device *pdev)
return ret;
}
- of_id = of_match_device(sunxi_rtc_dt_ids, &pdev->dev);
- if (!of_id) {
+ chip->data_year = of_device_get_match_data(&pdev->dev);
+ if (!chip->data_year) {
dev_err(&pdev->dev, "Unable to setup RTC data\n");
return -ENODEV;
}
- chip->data_year = (struct sunxi_rtc_data_year *) of_id->data;
/* clear the alarm count value */
writel(0, chip->base + SUNXI_ALRM_DHMS);
diff --git a/drivers/rtc/rtc-sysfs.c b/drivers/rtc/rtc-sysfs.c
index 7273855ed02e..463e286064ab 100644
--- a/drivers/rtc/rtc-sysfs.c
+++ b/drivers/rtc/rtc-sysfs.c
@@ -91,7 +91,12 @@ max_user_freq_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t n)
{
struct rtc_device *rtc = to_rtc_device(dev);
- unsigned long val = simple_strtoul(buf, NULL, 0);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 0, &val);
+ if (err)
+ return err;
if (val >= 4096 || val == 0)
return -EINVAL;
@@ -175,7 +180,9 @@ wakealarm_store(struct device *dev, struct device_attribute *attr,
} else
adjust = 1;
}
- alarm = simple_strtoul(buf_ptr, NULL, 0);
+ retval = kstrtoul(buf_ptr, 0, &alarm);
+ if (retval)
+ return retval;
if (adjust) {
alarm += now;
}
diff --git a/drivers/rtc/rtc-v3020.c b/drivers/rtc/rtc-v3020.c
index f9f97098c254..7a0436329d6c 100644
--- a/drivers/rtc/rtc-v3020.c
+++ b/drivers/rtc/rtc-v3020.c
@@ -57,7 +57,7 @@ struct v3020 {
/* GPIO access */
struct gpio *gpio;
- struct v3020_chip_ops *ops;
+ const struct v3020_chip_ops *ops;
struct rtc_device *rtc;
};
@@ -95,7 +95,7 @@ static unsigned char v3020_mmio_read_bit(struct v3020 *chip)
return !!(readl(chip->ioaddress) & (1 << chip->leftshift));
}
-static struct v3020_chip_ops v3020_mmio_ops = {
+static const struct v3020_chip_ops v3020_mmio_ops = {
.map_io = v3020_mmio_map,
.unmap_io = v3020_mmio_unmap,
.read_bit = v3020_mmio_read_bit,
@@ -158,7 +158,7 @@ static unsigned char v3020_gpio_read_bit(struct v3020 *chip)
return bit;
}
-static struct v3020_chip_ops v3020_gpio_ops = {
+static const struct v3020_chip_ops v3020_gpio_ops = {
.map_io = v3020_gpio_map,
.unmap_io = v3020_gpio_unmap,
.read_bit = v3020_gpio_read_bit,
diff --git a/include/linux/mfd/samsung/rtc.h b/include/linux/mfd/samsung/rtc.h
index a65e4655d470..48c3c5be7eb1 100644
--- a/include/linux/mfd/samsung/rtc.h
+++ b/include/linux/mfd/samsung/rtc.h
@@ -105,6 +105,8 @@ enum s2mps_rtc_reg {
#define S5M_RTC_UDR_MASK (1 << S5M_RTC_UDR_SHIFT)
#define S2MPS_RTC_WUDR_SHIFT 4
#define S2MPS_RTC_WUDR_MASK (1 << S2MPS_RTC_WUDR_SHIFT)
+#define S2MPS15_RTC_AUDR_SHIFT 4
+#define S2MPS15_RTC_AUDR_MASK (1 << S2MPS15_RTC_AUDR_SHIFT)
#define S2MPS13_RTC_AUDR_SHIFT 1
#define S2MPS13_RTC_AUDR_MASK (1 << S2MPS13_RTC_AUDR_SHIFT)
#define S2MPS15_RTC_WUDR_SHIFT 1
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-03 17:38:18 +0000