diff --git a/sys/conf/NOTES b/sys/conf/NOTES index a0428857b90..74a3ee66757 100644 --- a/sys/conf/NOTES +++ b/sys/conf/NOTES @@ -2276,6 +2276,14 @@ device ic device iic device iicsmb # smb over i2c bridge +# I2C peripheral devices +# +# ds133x Dallas Semiconductor DS1337, DS1338 and DS1339 RTC +# ds1672 Dallas Semiconductor DS1672 RTC +# +device ds133x +device ds1672 + # Parallel-Port Bus # # Parallel port bus support is provided by the `ppbus' device. diff --git a/sys/dev/iicbus/ds133x.c b/sys/dev/iicbus/ds133x.c index 9b546154289..eec41876bce 100644 --- a/sys/dev/iicbus/ds133x.c +++ b/sys/dev/iicbus/ds133x.c @@ -53,6 +53,8 @@ __FBSDID("$FreeBSD$"); #include "iicbus_if.h" #include "clock_if.h" +#define DS133X_DEVNAME "rtc" + #define DS133X_ADDR 0xd0 /* slave address */ #define DS133X_DATE_REG 0x0 #define DS133X_CTRL_REG 0x0e @@ -217,6 +219,15 @@ ds133x_init(device_t dev, uint8_t cs_reg, uint8_t cs_bit, uint8_t osf_reg, return (0); } + +static void +ds133x_identify(driver_t *driver, device_t parent) +{ + + if (device_find_child(parent, DS133X_DEVNAME, -1) == NULL) + BUS_ADD_CHILD(parent, 0, DS133X_DEVNAME, -1); +} + static int ds133x_probe(device_t dev) { @@ -336,6 +347,7 @@ ds133x_settime(device_t dev, struct timespec *ts) } static device_method_t ds133x_methods[] = { + DEVMETHOD(device_identify, ds133x_identify), DEVMETHOD(device_probe, ds133x_probe), DEVMETHOD(device_attach, ds133x_attach), @@ -346,7 +358,7 @@ static device_method_t ds133x_methods[] = { }; static driver_t ds133x_driver = { - "rtc", + DS133X_DEVNAME, ds133x_methods, sizeof(struct ds133x_softc), };