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path: root/drivers/rtc/rtc-pcf8523.c
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Diffstat (limited to 'drivers/rtc/rtc-pcf8523.c')
-rw-r--r--drivers/rtc/rtc-pcf8523.c146
1 files changed, 73 insertions, 73 deletions
diff --git a/drivers/rtc/rtc-pcf8523.c b/drivers/rtc/rtc-pcf8523.c
index 740e2136ca98..8b6fb20774bf 100644
--- a/drivers/rtc/rtc-pcf8523.c
+++ b/drivers/rtc/rtc-pcf8523.c
@@ -10,41 +10,41 @@
#include <linux/of.h>
#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_CONTROL3_PM_VDD BIT(6) /* switch-over disabled */
-#define REG_CONTROL3_PM_DSM BIT(5) /* direct switching mode */
-#define REG_CONTROL3_PM_MASK 0xe0
-#define REG_CONTROL3_BLF BIT(2) /* battery low bit, read-only */
-
-#define REG_SECONDS 0x03
-#define REG_SECONDS_OS BIT(7)
-
-#define REG_MINUTES 0x04
-#define REG_HOURS 0x05
-#define REG_DAYS 0x06
-#define REG_WEEKDAYS 0x07
-#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 PCF8523_REG_CONTROL1 0x00
+#define PCF8523_CONTROL1_CAP_SEL BIT(7)
+#define PCF8523_CONTROL1_STOP BIT(5)
+#define PCF8523_CONTROL1_AIE BIT(1)
+
+#define PCF8523_REG_CONTROL2 0x01
+#define PCF8523_CONTROL2_AF BIT(3)
+
+#define PCF8523_REG_CONTROL3 0x02
+#define PCF8523_CONTROL3_PM_BLD BIT(7) /* battery low detection disabled */
+#define PCF8523_CONTROL3_PM_VDD BIT(6) /* switch-over disabled */
+#define PCF8523_CONTROL3_PM_DSM BIT(5) /* direct switching mode */
+#define PCF8523_CONTROL3_PM_MASK 0xe0
+#define PCF8523_CONTROL3_BLF BIT(2) /* battery low bit, read-only */
+
+#define PCF8523_REG_SECONDS 0x03
+#define PCF8523_SECONDS_OS BIT(7)
+
+#define PCF8523_REG_MINUTES 0x04
+#define PCF8523_REG_HOURS 0x05
+#define PCF8523_REG_DAYS 0x06
+#define PCF8523_REG_WEEKDAYS 0x07
+#define PCF8523_REG_MONTHS 0x08
+#define PCF8523_REG_YEARS 0x09
+
+#define PCF8523_REG_MINUTE_ALARM 0x0a
+#define PCF8523_REG_HOUR_ALARM 0x0b
+#define PCF8523_REG_DAY_ALARM 0x0c
+#define PCF8523_REG_WEEKDAY_ALARM 0x0d
#define ALARM_DIS BIT(7)
-#define REG_OFFSET 0x0e
-#define REG_OFFSET_MODE BIT(7)
+#define PCF8523_REG_OFFSET 0x0e
+#define PCF8523_OFFSET_MODE BIT(7)
-#define REG_TMR_CLKOUT_CTRL 0x0f
+#define PCF8523_TMR_CLKOUT_CTRL 0x0f
struct pcf8523 {
struct rtc_device *rtc;
@@ -99,11 +99,11 @@ static int pcf8523_voltage_low(struct i2c_client *client)
u8 value;
int err;
- err = pcf8523_read(client, REG_CONTROL3, &value);
+ err = pcf8523_read(client, PCF8523_REG_CONTROL3, &value);
if (err < 0)
return err;
- return !!(value & REG_CONTROL3_BLF);
+ return !!(value & PCF8523_CONTROL3_BLF);
}
static int pcf8523_load_capacitance(struct i2c_client *client)
@@ -112,7 +112,7 @@ static int pcf8523_load_capacitance(struct i2c_client *client)
u8 value;
int err;
- err = pcf8523_read(client, REG_CONTROL1, &value);
+ err = pcf8523_read(client, PCF8523_REG_CONTROL1, &value);
if (err < 0)
return err;
@@ -126,14 +126,14 @@ static int pcf8523_load_capacitance(struct i2c_client *client)
load);
fallthrough;
case 12500:
- value |= REG_CONTROL1_CAP_SEL;
+ value |= PCF8523_CONTROL1_CAP_SEL;
break;
case 7000:
- value &= ~REG_CONTROL1_CAP_SEL;
+ value &= ~PCF8523_CONTROL1_CAP_SEL;
break;
}
- err = pcf8523_write(client, REG_CONTROL1, value);
+ err = pcf8523_write(client, PCF8523_REG_CONTROL1, value);
return err;
}
@@ -143,13 +143,13 @@ static int pcf8523_set_pm(struct i2c_client *client, u8 pm)
u8 value;
int err;
- err = pcf8523_read(client, REG_CONTROL3, &value);
+ err = pcf8523_read(client, PCF8523_REG_CONTROL3, &value);
if (err < 0)
return err;
- value = (value & ~REG_CONTROL3_PM_MASK) | pm;
+ value = (value & ~PCF8523_CONTROL3_PM_MASK) | pm;
- err = pcf8523_write(client, REG_CONTROL3, value);
+ err = pcf8523_write(client, PCF8523_REG_CONTROL3, value);
if (err < 0)
return err;
@@ -162,13 +162,13 @@ static irqreturn_t pcf8523_irq(int irq, void *dev_id)
u8 value;
int err;
- err = pcf8523_read(pcf8523->client, REG_CONTROL2, &value);
+ err = pcf8523_read(pcf8523->client, PCF8523_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);
+ if (value & PCF8523_CONTROL2_AF) {
+ value &= ~PCF8523_CONTROL2_AF;
+ pcf8523_write(pcf8523->client, PCF8523_REG_CONTROL2, value);
rtc_update_irq(pcf8523->rtc, 1, RTC_IRQF | RTC_AF);
return IRQ_HANDLED;
@@ -182,13 +182,13 @@ static int pcf8523_stop_rtc(struct i2c_client *client)
u8 value;
int err;
- err = pcf8523_read(client, REG_CONTROL1, &value);
+ err = pcf8523_read(client, PCF8523_REG_CONTROL1, &value);
if (err < 0)
return err;
- value |= REG_CONTROL1_STOP;
+ value |= PCF8523_CONTROL1_STOP;
- err = pcf8523_write(client, REG_CONTROL1, value);
+ err = pcf8523_write(client, PCF8523_REG_CONTROL1, value);
if (err < 0)
return err;
@@ -200,13 +200,13 @@ static int pcf8523_start_rtc(struct i2c_client *client)
u8 value;
int err;
- err = pcf8523_read(client, REG_CONTROL1, &value);
+ err = pcf8523_read(client, PCF8523_REG_CONTROL1, &value);
if (err < 0)
return err;
- value &= ~REG_CONTROL1_STOP;
+ value &= ~PCF8523_CONTROL1_STOP;
- err = pcf8523_write(client, REG_CONTROL1, value);
+ err = pcf8523_write(client, PCF8523_REG_CONTROL1, value);
if (err < 0)
return err;
@@ -216,7 +216,7 @@ static int pcf8523_start_rtc(struct i2c_client *client)
static int pcf8523_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
struct i2c_client *client = to_i2c_client(dev);
- u8 start = REG_SECONDS, regs[7];
+ u8 start = PCF8523_REG_SECONDS, regs[7];
struct i2c_msg msgs[2];
int err;
@@ -242,7 +242,7 @@ static int pcf8523_rtc_read_time(struct device *dev, struct rtc_time *tm)
if (err < 0)
return err;
- if (regs[0] & REG_SECONDS_OS)
+ if (regs[0] & PCF8523_SECONDS_OS)
return -EINVAL;
tm->tm_sec = bcd2bin(regs[0] & 0x7f);
@@ -267,8 +267,8 @@ static int pcf8523_rtc_set_time(struct device *dev, struct rtc_time *tm)
if (err < 0)
return err;
- regs[0] = REG_SECONDS;
- /* This will purposely overwrite REG_SECONDS_OS */
+ regs[0] = PCF8523_REG_SECONDS;
+ /* This will purposely overwrite PCF8523_SECONDS_OS */
regs[1] = bin2bcd(tm->tm_sec);
regs[2] = bin2bcd(tm->tm_min);
regs[3] = bin2bcd(tm->tm_hour);
@@ -299,7 +299,7 @@ static int pcf8523_rtc_set_time(struct device *dev, struct rtc_time *tm)
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];
+ u8 start = PCF8523_REG_MINUTE_ALARM, regs[4];
struct i2c_msg msgs[2];
u8 value;
int err;
@@ -324,15 +324,15 @@ static int pcf8523_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *tm)
tm->time.tm_mday = bcd2bin(regs[2] & 0x3F);
tm->time.tm_wday = bcd2bin(regs[3] & 0x7);
- err = pcf8523_read(client, REG_CONTROL1, &value);
+ err = pcf8523_read(client, PCF8523_REG_CONTROL1, &value);
if (err < 0)
return err;
- tm->enabled = !!(value & REG_CONTROL1_AIE);
+ tm->enabled = !!(value & PCF8523_CONTROL1_AIE);
- err = pcf8523_read(client, REG_CONTROL2, &value);
+ err = pcf8523_read(client, PCF8523_REG_CONTROL2, &value);
if (err < 0)
return err;
- tm->pending = !!(value & REG_CONTROL2_AF);
+ tm->pending = !!(value & PCF8523_CONTROL2_AF);
return 0;
}
@@ -343,16 +343,16 @@ static int pcf8523_irq_enable(struct device *dev, unsigned int enabled)
u8 value;
int err;
- err = pcf8523_read(client, REG_CONTROL1, &value);
+ err = pcf8523_read(client, PCF8523_REG_CONTROL1, &value);
if (err < 0)
return err;
- value &= REG_CONTROL1_AIE;
+ value &= PCF8523_CONTROL1_AIE;
if (enabled)
- value |= REG_CONTROL1_AIE;
+ value |= PCF8523_CONTROL1_AIE;
- err = pcf8523_write(client, REG_CONTROL1, value);
+ err = pcf8523_write(client, PCF8523_REG_CONTROL1, value);
if (err < 0)
return err;
@@ -370,7 +370,7 @@ static int pcf8523_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *tm)
if (err)
return err;
- err = pcf8523_write(client, REG_CONTROL2, 0);
+ err = pcf8523_write(client, PCF8523_REG_CONTROL2, 0);
if (err < 0)
return err;
@@ -382,7 +382,7 @@ static int pcf8523_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *tm)
rtc_time64_to_tm(alarm_time, &tm->time);
}
- regs[0] = REG_MINUTE_ALARM;
+ regs[0] = PCF8523_REG_MINUTE_ALARM;
regs[1] = bin2bcd(tm->time.tm_min);
regs[2] = bin2bcd(tm->time.tm_hour);
regs[3] = bin2bcd(tm->time.tm_mday);
@@ -418,11 +418,11 @@ static int pcf8523_rtc_ioctl(struct device *dev, unsigned int cmd,
if (ret)
flags |= RTC_VL_BACKUP_LOW;
- ret = pcf8523_read(client, REG_SECONDS, &value);
+ ret = pcf8523_read(client, PCF8523_REG_SECONDS, &value);
if (ret < 0)
return ret;
- if (value & REG_SECONDS_OS)
+ if (value & PCF8523_SECONDS_OS)
flags |= RTC_VL_DATA_INVALID;
return put_user(flags, (unsigned int __user *)arg);
@@ -442,13 +442,13 @@ static int pcf8523_rtc_read_offset(struct device *dev, long *offset)
u8 value;
s8 val;
- err = pcf8523_read(client, REG_OFFSET, &value);
+ err = pcf8523_read(client, PCF8523_REG_OFFSET, &value);
if (err < 0)
return err;
/* sign extend the 7-bit offset value */
val = value << 1;
- *offset = (value & REG_OFFSET_MODE ? 4069 : 4340) * (val >> 1);
+ *offset = (value & PCF8523_OFFSET_MODE ? 4069 : 4340) * (val >> 1);
return 0;
}
@@ -465,9 +465,9 @@ static int pcf8523_rtc_set_offset(struct device *dev, long offset)
if (abs(reg_m0 * 4340 - offset) < abs(reg_m1 * 4069 - offset))
value = reg_m0 & 0x7f;
else
- value = (reg_m1 & 0x7f) | REG_OFFSET_MODE;
+ value = (reg_m1 & 0x7f) | PCF8523_OFFSET_MODE;
- return pcf8523_write(client, REG_OFFSET, value);
+ return pcf8523_write(client, PCF8523_REG_OFFSET, value);
}
static const struct rtc_class_ops pcf8523_rtc_ops = {
@@ -519,7 +519,7 @@ static int pcf8523_probe(struct i2c_client *client,
rtc->uie_unsupported = 1;
if (client->irq > 0) {
- err = pcf8523_write(client, REG_TMR_CLKOUT_CTRL, 0x38);
+ err = pcf8523_write(client, PCF8523_TMR_CLKOUT_CTRL, 0x38);
if (err < 0)
return err;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-09 22:46:28 +0000