diff options
Diffstat (limited to 'drivers/rtc/rtc-m41t80.c')
| -rw-r--r-- | drivers/rtc/rtc-m41t80.c | 42 |
1 files changed, 18 insertions, 24 deletions
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c index c90fba3ed861..ad03e2f12f5d 100644 --- a/drivers/rtc/rtc-m41t80.c +++ b/drivers/rtc/rtc-m41t80.c @@ -73,7 +73,6 @@ #define M41T80_FEATURE_WD BIT(3) /* Extra watchdog resolution */ #define M41T80_FEATURE_SQ_ALT BIT(4) /* RSx bits are in reg 4 */ -static DEFINE_MUTEX(m41t80_rtc_mutex); static const struct i2c_device_id m41t80_id[] = { { "m41t62", M41T80_FEATURE_SQ | M41T80_FEATURE_SQ_ALT }, { "m41t65", M41T80_FEATURE_HT | M41T80_FEATURE_WD }, @@ -199,9 +198,9 @@ static irqreturn_t m41t80_handle_irq(int irq, void *dev_id) return IRQ_HANDLED; } -static int m41t80_get_datetime(struct i2c_client *client, - struct rtc_time *tm) +static int m41t80_rtc_read_time(struct device *dev, struct rtc_time *tm) { + struct i2c_client *client = to_i2c_client(dev); unsigned char buf[8]; int err, flags; @@ -230,12 +229,12 @@ static int m41t80_get_datetime(struct i2c_client *client, /* assume 20YY not 19YY, and ignore the Century Bit */ tm->tm_year = bcd2bin(buf[M41T80_REG_YEAR]) + 100; - return rtc_valid_tm(tm); + return 0; } -/* Sets the given date and time to the real time clock. */ -static int m41t80_set_datetime(struct i2c_client *client, struct rtc_time *tm) +static int m41t80_rtc_set_time(struct device *dev, struct rtc_time *tm) { + struct i2c_client *client = to_i2c_client(dev); struct m41t80_data *clientdata = i2c_get_clientdata(client); unsigned char buf[8]; int err, flags; @@ -298,16 +297,6 @@ static int m41t80_rtc_proc(struct device *dev, struct seq_file *seq) return 0; } -static int m41t80_rtc_read_time(struct device *dev, struct rtc_time *tm) -{ - return m41t80_get_datetime(to_i2c_client(dev), tm); -} - -static int m41t80_rtc_set_time(struct device *dev, struct rtc_time *tm) -{ - return m41t80_set_datetime(to_i2c_client(dev), tm); -} - static int m41t80_alarm_irq_enable(struct device *dev, unsigned int enabled) { struct i2c_client *client = to_i2c_client(dev); @@ -598,6 +587,7 @@ static struct clk *m41t80_sqw_register_clk(struct m41t80_data *m41t80) * ***************************************************************************** */ +static DEFINE_MUTEX(m41t80_rtc_mutex); static struct i2c_client *save_client; /* Default margin */ @@ -885,7 +875,6 @@ static int m41t80_probe(struct i2c_client *client, { struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); int rc = 0; - struct rtc_device *rtc = NULL; struct rtc_time tm; struct m41t80_data *m41t80_data = NULL; bool wakeup_source = false; @@ -909,6 +898,10 @@ static int m41t80_probe(struct i2c_client *client, m41t80_data->features = id->driver_data; i2c_set_clientdata(client, m41t80_data); + m41t80_data->rtc = devm_rtc_allocate_device(&client->dev); + if (IS_ERR(m41t80_data->rtc)) + return PTR_ERR(m41t80_data->rtc); + #ifdef CONFIG_OF wakeup_source = of_property_read_bool(client->dev.of_node, "wakeup-source"); @@ -932,15 +925,11 @@ static int m41t80_probe(struct i2c_client *client, device_init_wakeup(&client->dev, true); } - rtc = devm_rtc_device_register(&client->dev, client->name, - &m41t80_rtc_ops, THIS_MODULE); - if (IS_ERR(rtc)) - return PTR_ERR(rtc); + m41t80_data->rtc->ops = &m41t80_rtc_ops; - m41t80_data->rtc = rtc; if (client->irq <= 0) { /* We cannot support UIE mode if we do not have an IRQ line */ - rtc->uie_unsupported = 1; + m41t80_data->rtc->uie_unsupported = 1; } /* Make sure HT (Halt Update) bit is cleared */ @@ -948,7 +937,7 @@ static int m41t80_probe(struct i2c_client *client, if (rc >= 0 && rc & M41T80_ALHOUR_HT) { if (m41t80_data->features & M41T80_FEATURE_HT) { - m41t80_get_datetime(client, &tm); + m41t80_rtc_read_time(&client->dev, &tm); dev_info(&client->dev, "HT bit was set!\n"); dev_info(&client->dev, "Power Down at %04i-%02i-%02i %02i:%02i:%02i\n", @@ -993,6 +982,11 @@ static int m41t80_probe(struct i2c_client *client, if (m41t80_data->features & M41T80_FEATURE_SQ) m41t80_sqw_register_clk(m41t80_data); #endif + + rc = rtc_register_device(m41t80_data->rtc); + if (rc) + return rc; + return 0; } |