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path: root/drivers/rtc/rtc-max77686.c
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Diffstat (limited to 'drivers/rtc/rtc-max77686.c')
-rw-r--r--drivers/rtc/rtc-max77686.c75
1 files changed, 45 insertions, 30 deletions
diff --git a/drivers/rtc/rtc-max77686.c b/drivers/rtc/rtc-max77686.c
index eae7cb9faf1e..b0250d91fb00 100644
--- a/drivers/rtc/rtc-max77686.c
+++ b/drivers/rtc/rtc-max77686.c
@@ -19,6 +19,7 @@
#define MAX77686_I2C_ADDR_RTC (0x0C >> 1)
#define MAX77620_I2C_ADDR_RTC 0x68
+#define MAX77714_I2C_ADDR_RTC 0x48
#define MAX77686_INVALID_I2C_ADDR (-1)
/* Define non existing register */
@@ -34,9 +35,6 @@
#define RTC_UDR_MASK BIT(RTC_UDR_SHIFT)
#define RTC_RBUDR_SHIFT 4
#define RTC_RBUDR_MASK BIT(RTC_RBUDR_SHIFT)
-/* RTC Hour register */
-#define HOUR_PM_SHIFT 6
-#define HOUR_PM_MASK BIT(HOUR_PM_SHIFT)
/* RTC Alarm Enable */
#define ALARM_ENABLE_SHIFT 7
#define ALARM_ENABLE_MASK BIT(ALARM_ENABLE_SHIFT)
@@ -57,28 +55,31 @@ enum {
RTC_WEEKDAY,
RTC_MONTH,
RTC_YEAR,
- RTC_DATE,
+ RTC_MONTHDAY,
RTC_NR_TIME
};
+/**
+ * struct max77686_rtc_driver_data - model-specific configuration
+ * @delay: Minimum usecs needed for a RTC update
+ * @mask: Mask used to read RTC registers value
+ * @map: Registers offset to I2C addresses map
+ * @alarm_enable_reg: Has a separate alarm enable register?
+ * @rtc_i2c_addr: I2C address for RTC block
+ * @rtc_irq_from_platform: RTC interrupt via platform resource
+ * @alarm_pending_status_reg: Pending alarm status register
+ * @rtc_irq_chip: RTC IRQ CHIP for regmap
+ * @regmap_config: regmap configuration for the chip
+ */
struct max77686_rtc_driver_data {
- /* Minimum usecs needed for a RTC update */
unsigned long delay;
- /* Mask used to read RTC registers value */
u8 mask;
- /* Registers offset to I2C addresses map */
const unsigned int *map;
- /* Has a separate alarm enable register? */
bool alarm_enable_reg;
- /* I2C address for RTC block */
int rtc_i2c_addr;
- /* RTC interrupt via platform resource */
bool rtc_irq_from_platform;
- /* Pending alarm status register */
int alarm_pending_status_reg;
- /* RTC IRQ CHIP for regmap */
const struct regmap_irq_chip *rtc_irq_chip;
- /* regmap configuration for the chip */
const struct regmap_config *regmap_config;
};
@@ -96,7 +97,6 @@ struct max77686_rtc_info {
int rtc_irq;
int virq;
- int rtc_24hr_mode;
};
enum MAX77686_RTC_OP {
@@ -116,7 +116,7 @@ enum max77686_rtc_reg_offset {
REG_RTC_WEEKDAY,
REG_RTC_MONTH,
REG_RTC_YEAR,
- REG_RTC_DATE,
+ REG_RTC_MONTHDAY,
REG_ALARM1_SEC,
REG_ALARM1_MIN,
REG_ALARM1_HOUR,
@@ -147,7 +147,7 @@ static const unsigned int max77686_map[REG_RTC_END] = {
[REG_RTC_WEEKDAY] = MAX77686_RTC_WEEKDAY,
[REG_RTC_MONTH] = MAX77686_RTC_MONTH,
[REG_RTC_YEAR] = MAX77686_RTC_YEAR,
- [REG_RTC_DATE] = MAX77686_RTC_DATE,
+ [REG_RTC_MONTHDAY] = MAX77686_RTC_MONTHDAY,
[REG_ALARM1_SEC] = MAX77686_ALARM1_SEC,
[REG_ALARM1_MIN] = MAX77686_ALARM1_MIN,
[REG_ALARM1_HOUR] = MAX77686_ALARM1_HOUR,
@@ -201,6 +201,28 @@ static const struct max77686_rtc_driver_data max77686_drv_data = {
.regmap_config = &max77686_rtc_regmap_config,
};
+static const struct regmap_irq_chip max77714_rtc_irq_chip = {
+ .name = "max77714-rtc",
+ .status_base = MAX77686_RTC_INT,
+ .mask_base = MAX77686_RTC_INTM,
+ .num_regs = 1,
+ .irqs = max77686_rtc_irqs,
+ .num_irqs = ARRAY_SIZE(max77686_rtc_irqs) - 1, /* no WTSR on 77714 */
+};
+
+static const struct max77686_rtc_driver_data max77714_drv_data = {
+ .delay = 16000,
+ .mask = 0x7f,
+ .map = max77686_map,
+ .alarm_enable_reg = false,
+ .rtc_irq_from_platform = false,
+ /* On MAX77714 RTCA1 is BIT 1 of RTCINT (0x00). Not supported by this driver. */
+ .alarm_pending_status_reg = MAX77686_INVALID_REG,
+ .rtc_i2c_addr = MAX77714_I2C_ADDR_RTC,
+ .rtc_irq_chip = &max77714_rtc_irq_chip,
+ .regmap_config = &max77686_rtc_regmap_config,
+};
+
static const struct regmap_config max77620_rtc_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
@@ -230,7 +252,7 @@ static const unsigned int max77802_map[REG_RTC_END] = {
[REG_RTC_WEEKDAY] = MAX77802_RTC_WEEKDAY,
[REG_RTC_MONTH] = MAX77802_RTC_MONTH,
[REG_RTC_YEAR] = MAX77802_RTC_YEAR,
- [REG_RTC_DATE] = MAX77802_RTC_DATE,
+ [REG_RTC_MONTHDAY] = MAX77802_RTC_MONTHDAY,
[REG_ALARM1_SEC] = MAX77802_ALARM1_SEC,
[REG_ALARM1_MIN] = MAX77802_ALARM1_MIN,
[REG_ALARM1_HOUR] = MAX77802_ALARM1_HOUR,
@@ -275,17 +297,11 @@ static void max77686_rtc_data_to_tm(u8 *data, struct rtc_time *tm,
tm->tm_sec = data[RTC_SEC] & mask;
tm->tm_min = data[RTC_MIN] & mask;
- if (info->rtc_24hr_mode) {
- tm->tm_hour = data[RTC_HOUR] & 0x1f;
- } else {
- tm->tm_hour = data[RTC_HOUR] & 0x0f;
- if (data[RTC_HOUR] & HOUR_PM_MASK)
- tm->tm_hour += 12;
- }
+ tm->tm_hour = data[RTC_HOUR] & 0x1f;
/* Only a single bit is set in data[], so fls() would be equivalent */
tm->tm_wday = ffs(data[RTC_WEEKDAY] & mask) - 1;
- tm->tm_mday = data[RTC_DATE] & 0x1f;
+ tm->tm_mday = data[RTC_MONTHDAY] & 0x1f;
tm->tm_mon = (data[RTC_MONTH] & 0x0f) - 1;
tm->tm_year = data[RTC_YEAR] & mask;
tm->tm_yday = 0;
@@ -306,7 +322,7 @@ static int max77686_rtc_tm_to_data(struct rtc_time *tm, u8 *data,
data[RTC_MIN] = tm->tm_min;
data[RTC_HOUR] = tm->tm_hour;
data[RTC_WEEKDAY] = 1 << tm->tm_wday;
- data[RTC_DATE] = tm->tm_mday;
+ data[RTC_MONTHDAY] = tm->tm_mday;
data[RTC_MONTH] = tm->tm_mon + 1;
if (info->drv_data->alarm_enable_reg) {
@@ -562,8 +578,8 @@ static int max77686_rtc_start_alarm(struct max77686_rtc_info *info)
data[RTC_MONTH] |= (1 << ALARM_ENABLE_SHIFT);
if (data[RTC_YEAR] & info->drv_data->mask)
data[RTC_YEAR] |= (1 << ALARM_ENABLE_SHIFT);
- if (data[RTC_DATE] & 0x1f)
- data[RTC_DATE] |= (1 << ALARM_ENABLE_SHIFT);
+ if (data[RTC_MONTHDAY] & 0x1f)
+ data[RTC_MONTHDAY] |= (1 << ALARM_ENABLE_SHIFT);
ret = regmap_bulk_write(info->rtc_regmap, map[REG_ALARM1_SEC],
data, ARRAY_SIZE(data));
@@ -659,8 +675,6 @@ static int max77686_rtc_init_reg(struct max77686_rtc_info *info)
data[0] = (1 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);
data[1] = (0 << BCD_EN_SHIFT) | (1 << MODEL24_SHIFT);
- info->rtc_24hr_mode = 1;
-
ret = regmap_bulk_write(info->rtc_regmap,
info->drv_data->map[REG_RTC_CONTROLM],
data, ARRAY_SIZE(data));
@@ -852,6 +866,7 @@ static const struct platform_device_id rtc_id[] = {
{ "max77686-rtc", .driver_data = (kernel_ulong_t)&max77686_drv_data, },
{ "max77802-rtc", .driver_data = (kernel_ulong_t)&max77802_drv_data, },
{ "max77620-rtc", .driver_data = (kernel_ulong_t)&max77620_drv_data, },
+ { "max77714-rtc", .driver_data = (kernel_ulong_t)&max77714_drv_data, },
{},
};
MODULE_DEVICE_TABLE(platform, rtc_id);
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-26 04:10:46 +0000