1 /*-
30  * Driver for Maxim DS1307 I2C real-time clock/calendar.
103 	sc->sc_ctrl = 0;  in ds1307_ctrl_read()
104 	error = ds1307_read1(sc->sc_dev, DS1307_CONTROL, &sc->sc_ctrl);  in ds1307_ctrl_read()
106 		device_printf(sc->sc_dev, "%s: cannot read from RTC: %d\n",  in ds1307_ctrl_read()
118 	uint8_t ctrl;  in ds1307_ctrl_write()  local
120 	ctrl = sc->sc_ctrl & DS1307_CTRL_MASK;  in ds1307_ctrl_write()
121 	error = ds1307_write1(sc->sc_dev, DS1307_CONTROL, ctrl);  in ds1307_ctrl_write()
123 		device_printf(sc->sc_dev, "%s: cannot write to RTC: %d\n",  in ds1307_ctrl_write()
139 	if (sc->chiptype == TYPE_MICROCHIP_MCP7941X)  in ds1307_sqwe_sysctl()
143 	sqwe = newv = (sc->sc_ctrl & sqwe_bit) ? 1 : 0;  in ds1307_sqwe_sysctl()
145 	if (error != 0 || req->newptr == NULL)  in ds1307_sqwe_sysctl()
148 		sc->sc_ctrl &= ~sqwe_bit;  in ds1307_sqwe_sysctl()
150 			sc->sc_ctrl |= sqwe_bit;  in ds1307_sqwe_sysctl()
170 	tmp = (sc->sc_ctrl & DS1307_CTRL_RS_MASK);  in ds1307_sqw_freq_sysctl()
172 		tmp = nitems(ds1307_sqw_freq) - 1;  in ds1307_sqw_freq_sysctl()
175 	if (error != 0 || req->newptr == NULL)  in ds1307_sqw_freq_sysctl()
182 		sc->sc_ctrl &= ~DS1307_CTRL_RS_MASK;  in ds1307_sqw_freq_sysctl()
183 		sc->sc_ctrl |= newf;  in ds1307_sqw_freq_sysctl()
202 	sqwe = newv = (sc->sc_ctrl & DS1307_CTRL_OUT) ? 1 : 0;  in ds1307_sqw_out_sysctl()
204 	if (error != 0 || req->newptr == NULL)  in ds1307_sqw_out_sysctl()
207 		sc->sc_ctrl &= ~DS1307_CTRL_OUT;  in ds1307_sqw_out_sysctl()
209 			sc->sc_ctrl |= DS1307_CTRL_OUT;  in ds1307_sqw_out_sysctl()
228 	if (compat->ocd_str != NULL) {  in ds1307_probe()
229 		switch(compat->ocd_data) {  in ds1307_probe()
240 			device_set_desc(dev, "Epson RX-8035");  in ds1307_probe()
243 			device_set_desc(dev, "Unknown DS1307-like device");  in ds1307_probe()
263 	sc->sc_dev = dev;  in ds1307_attach()
264 	sc->enum_hook.ich_func = ds1307_start;  in ds1307_attach()
265 	sc->enum_hook.ich_arg = dev;  in ds1307_attach()
268 	sc->chiptype = compat->ocd_data;  in ds1307_attach()
270 	if (sc->chiptype == TYPE_MAXIM1307)  in ds1307_attach()
271 		sc->chiptype = TYPE_DS1307;  in ds1307_attach()
273 	sc->chiptype = TYPE_DS1307;  in ds1307_attach()
280 	if (config_intrhook_establish(&sc->enum_hook) != 0)  in ds1307_attach()
301 	dev = sc->sc_dev;  in is_epson_time_valid()
304 	 * The RX-8035 single register read is non-standard  in is_epson_time_valid()
305 	 * Refer to section 8.9.5 of the RX-8035 application manual:  in is_epson_time_valid()
307 	 * Basically, register to read goes into the top 4 bits.  in is_epson_time_valid()
327 		device_printf(dev, "Power-on reset detected (ctrl2=%#02x)\n",  in is_epson_time_valid()
343 	dev = sc->sc_dev;  in mark_epson_time_valid()
372 	if (sc->chiptype == TYPE_EPSON_RX8035)  in is_dev_time_valid()
375 	dev = sc->sc_dev;  in is_dev_time_valid()
384 	switch (sc->chiptype) {  in is_dev_time_valid()
410 	config_intrhook_disestablish(&sc->enum_hook);  in ds1307_start()
418 	 * square wave output cannot be changed or inhibited on the RX-8035,  in ds1307_start()
421 	if (sc->chiptype == TYPE_EPSON_RX8035)  in ds1307_start()
430 	    ds1307_sqwe_sysctl, "IU", "DS1307 square-wave enable");  in ds1307_start()
434 	    "DS1307 square-wave output frequency");  in ds1307_start()
437 	    ds1307_sqw_out_sysctl, "IU", "DS1307 square-wave output state");  in ds1307_start()
442 	 * clock_settime() method to be called just after top-of-second;  in ds1307_start()
443 	 * resetting the time resets top-of-second in the hardware.  in ds1307_start()
458 	error = iicdev_readfrom(sc->sc_dev, DS1307_SECS, data, sizeof(data),  in ds1307_gettime()
476 	if (sc->chiptype == TYPE_EPSON_RX8035)  in ds1307_gettime()
482 		sc->sc_use_ampm = true;  in ds1307_gettime()
496 	clock_dbgprint_bcd(sc->sc_dev, CLOCK_DBG_READ, &bct);   in ds1307_gettime()
497 	return (clock_bcd_to_ts(&bct, ts, sc->sc_use_ampm));  in ds1307_gettime()
512 	 * We request a timespec with no resolution-adjustment.  That also  in ds1307_settime()
515 	ts->tv_sec -= utc_offset();  in ds1307_settime()
516 	clock_ts_to_bcd(ts, &bct, sc->sc_use_ampm);  in ds1307_settime()
517 	clock_dbgprint_bcd(sc->sc_dev, CLOCK_DBG_WRITE, &bct);  in ds1307_settime()
523 	if (sc->sc_use_ampm) {  in ds1307_settime()
524 		pmflags = (sc->chiptype != TYPE_EPSON_RX8035) ?  in ds1307_settime()
529 	} else if (sc->chiptype == TYPE_EPSON_RX8035)  in ds1307_settime()
541 	if (sc->chiptype == TYPE_MICROCHIP_MCP7941X) {  in ds1307_settime()
550 	error = iicdev_writeto(sc->sc_dev, DS1307_SECS, data, sizeof(data),  in ds1307_settime()
556 	if (sc->chiptype == TYPE_EPSON_RX8035)  in ds1307_settime()