The patch titled Subject: drivers/rtc/rtc-s35390a.c: add wakealarm support for rtc-s35390A rtc chip has been removed from the -mm tree. Its filename was drivers-rtc-rtc-s35390ac-add-wakealarm-support-for-rtc-s35390a-rtc-chip.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Michael Langer <michael.brainbug.langer@xxxxxxxxxxxxxx> Subject: drivers/rtc/rtc-s35390a.c: add wakealarm support for rtc-s35390A rtc chip Add basic get/set alarm support for the Seiko Instruments S-35390A. The chip is used on the QNAP TS-219P+ NAS device. Signed-off-by: Michael Langer <michael.brainbug.langer@xxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/rtc/rtc-s35390a.c | 116 ++++++++++++++++++++++++++++++++++++ 1 file changed, 116 insertions(+) diff -puN drivers/rtc/rtc-s35390a.c~drivers-rtc-rtc-s35390ac-add-wakealarm-support-for-rtc-s35390a-rtc-chip drivers/rtc/rtc-s35390a.c --- a/drivers/rtc/rtc-s35390a.c~drivers-rtc-rtc-s35390ac-add-wakealarm-support-for-rtc-s35390a-rtc-chip +++ a/drivers/rtc/rtc-s35390a.c @@ -19,6 +19,8 @@ #define S35390A_CMD_STATUS1 0 #define S35390A_CMD_STATUS2 1 #define S35390A_CMD_TIME1 2 +#define S35390A_CMD_TIME2 3 +#define S35390A_CMD_INT2_REG1 5 #define S35390A_BYTE_YEAR 0 #define S35390A_BYTE_MONTH 1 @@ -28,12 +30,23 @@ #define S35390A_BYTE_MINS 5 #define S35390A_BYTE_SECS 6 +#define S35390A_ALRM_BYTE_WDAY 0 +#define S35390A_ALRM_BYTE_HOURS 1 +#define S35390A_ALRM_BYTE_MINS 2 + #define S35390A_FLAG_POC 0x01 #define S35390A_FLAG_BLD 0x02 #define S35390A_FLAG_24H 0x40 #define S35390A_FLAG_RESET 0x80 #define S35390A_FLAG_TEST 0x01 +#define S35390A_INT2_MODE_MASK 0xF0 + +#define S35390A_INT2_MODE_NOINTR 0x00 +#define S35390A_INT2_MODE_FREQ 0x10 +#define S35390A_INT2_MODE_ALARM 0x40 +#define S35390A_INT2_MODE_PMIN_EDG 0x20 + static const struct i2c_device_id s35390a_id[] = { { "s35390a", 0 }, { } @@ -193,6 +206,104 @@ static int s35390a_get_datetime(struct i return rtc_valid_tm(tm); } +static int s35390a_set_alarm(struct i2c_client *client, struct rtc_wkalrm *alm) +{ + struct s35390a *s35390a = i2c_get_clientdata(client); + char buf[3], sts = 0; + int err, i; + + dev_dbg(&client->dev, "%s: alm is secs=%d, mins=%d, hours=%d mday=%d, "\ + "mon=%d, year=%d, wday=%d\n", __func__, alm->time.tm_sec, + alm->time.tm_min, alm->time.tm_hour, alm->time.tm_mday, + alm->time.tm_mon, alm->time.tm_year, alm->time.tm_wday); + + /* disable interrupt */ + err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &sts, sizeof(sts)); + if (err < 0) + return err; + + /* clear pending interrupt, if any */ + err = s35390a_get_reg(s35390a, S35390A_CMD_STATUS1, &sts, sizeof(sts)); + if (err < 0) + return err; + + if (alm->enabled) + sts = S35390A_INT2_MODE_ALARM; + else + sts = S35390A_INT2_MODE_NOINTR; + + /* This chip expects the bits of each byte to be in reverse order */ + sts = bitrev8(sts); + + /* set interupt mode*/ + err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &sts, sizeof(sts)); + if (err < 0) + return err; + + if (alm->time.tm_wday != -1) + buf[S35390A_ALRM_BYTE_WDAY] = bin2bcd(alm->time.tm_wday) | 0x80; + + buf[S35390A_ALRM_BYTE_HOURS] = s35390a_hr2reg(s35390a, + alm->time.tm_hour) | 0x80; + buf[S35390A_ALRM_BYTE_MINS] = bin2bcd(alm->time.tm_min) | 0x80; + + if (alm->time.tm_hour >= 12) + buf[S35390A_ALRM_BYTE_HOURS] |= 0x40; + + for (i = 0; i < 3; ++i) + buf[i] = bitrev8(buf[i]); + + err = s35390a_set_reg(s35390a, S35390A_CMD_INT2_REG1, buf, + sizeof(buf)); + + return err; +} + +static int s35390a_read_alarm(struct i2c_client *client, struct rtc_wkalrm *alm) +{ + struct s35390a *s35390a = i2c_get_clientdata(client); + char buf[3], sts; + int i, err; + + err = s35390a_get_reg(s35390a, S35390A_CMD_STATUS2, &sts, sizeof(sts)); + if (err < 0) + return err; + + if (bitrev8(sts) != S35390A_INT2_MODE_ALARM) + return -EINVAL; + + err = s35390a_get_reg(s35390a, S35390A_CMD_INT2_REG1, buf, sizeof(buf)); + if (err < 0) + return err; + + /* This chip returns the bits of each byte in reverse order */ + for (i = 0; i < 3; ++i) { + buf[i] = bitrev8(buf[i]); + buf[i] &= ~0x80; + } + + alm->time.tm_wday = bcd2bin(buf[S35390A_ALRM_BYTE_WDAY]); + alm->time.tm_hour = s35390a_reg2hr(s35390a, + buf[S35390A_ALRM_BYTE_HOURS]); + alm->time.tm_min = bcd2bin(buf[S35390A_ALRM_BYTE_MINS]); + + dev_dbg(&client->dev, "%s: alm is mins=%d, hours=%d, wday=%d\n", + __func__, alm->time.tm_min, alm->time.tm_hour, + alm->time.tm_wday); + + return 0; +} + +static int s35390a_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) +{ + return s35390a_read_alarm(to_i2c_client(dev), alm); +} + +static int s35390a_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) +{ + return s35390a_set_alarm(to_i2c_client(dev), alm); +} + static int s35390a_rtc_read_time(struct device *dev, struct rtc_time *tm) { return s35390a_get_datetime(to_i2c_client(dev), tm); @@ -206,6 +317,9 @@ static int s35390a_rtc_set_time(struct d static const struct rtc_class_ops s35390a_rtc_ops = { .read_time = s35390a_rtc_read_time, .set_time = s35390a_rtc_set_time, + .set_alarm = s35390a_rtc_set_alarm, + .read_alarm = s35390a_rtc_read_alarm, + }; static struct i2c_driver s35390a_driver; @@ -270,6 +384,8 @@ static int s35390a_probe(struct i2c_clie if (s35390a_get_datetime(client, &tm) < 0) dev_warn(&client->dev, "clock needs to be set\n"); + device_set_wakeup_capable(&client->dev, 1); + s35390a->rtc = rtc_device_register(s35390a_driver.driver.name, &client->dev, &s35390a_rtc_ops, THIS_MODULE); _ Patches currently in -mm which might be from michael.brainbug.langer@xxxxxxxxxxxxxx are origin.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html