| ds3231.c (323467) | ds3231.c (327653) |
|---|---|
| 1/*- 2 * Copyright (c) 2014-2015 Luiz Otavio O Souza <loos@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2014-2015 Luiz Otavio O Souza <loos@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> |
| 28__FBSDID("$FreeBSD: stable/11/sys/dev/iicbus/ds3231.c 323467 2017-09-11 22:21:15Z ian $"); | 28__FBSDID("$FreeBSD: stable/11/sys/dev/iicbus/ds3231.c 327653 2018-01-06 23:04:14Z ian $"); |
| 29 30/* 31 * Driver for Maxim DS3231[N] real-time clock/calendar. 32 */ 33 34#include "opt_platform.h" 35 36#include <sys/param.h> --- 385 unchanged lines hidden (view full) --- 422 /* 423 * Warn if the clock stopped, but don't restart it until the first 424 * clock_settime() call. 425 */ 426 if (sc->sc_status & DS3231_STATUS_OSF) { 427 device_printf(sc->sc_dev, 428 "WARNING: RTC clock stopped, check the battery.\n"); 429 } | 29 30/* 31 * Driver for Maxim DS3231[N] real-time clock/calendar. 32 */ 33 34#include "opt_platform.h" 35 36#include <sys/param.h> --- 385 unchanged lines hidden (view full) --- 422 /* 423 * Warn if the clock stopped, but don't restart it until the first 424 * clock_settime() call. 425 */ 426 if (sc->sc_status & DS3231_STATUS_OSF) { 427 device_printf(sc->sc_dev, 428 "WARNING: RTC clock stopped, check the battery.\n"); 429 } |
| 430 /* Ack any pending alarm interrupt. */ 431 if (ds3231_status_write(sc, 1, 1) != 0) 432 return; 433 /* Always enable the oscillator. */ 434 if (ds3231_ctrl_write(sc) != 0) 435 return; | |
| 436 | 430 |
| 431 /* 432 * Ack any pending alarm interrupts and clear the EOSC bit to ensure the 433 * clock runs even when on battery power. Do not give up if these 434 * writes fail, because a factory-fresh chip is in a special mode that 435 * disables much of the chip to save battery power, and the only thing 436 * that gets it out of that mode is writing to the time registers. In 437 * these pristine chips, the EOSC and alarm bits are zero already, so 438 * the first valid write of time will get everything running properly. 439 */ 440 ds3231_status_write(sc, 1, 1); 441 ds3231_ctrl_write(sc); 442 |
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| 437 /* Temperature. */ 438 SYSCTL_ADD_PROC(ctx, tree, OID_AUTO, "temperature", 439 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 0, 440 ds3231_temp_sysctl, "IK", "Current temperature"); 441 /* Configuration parameters. */ 442 SYSCTL_ADD_PROC(ctx, tree, OID_AUTO, "temp_conv", 443 CTLFLAG_RW | CTLTYPE_UINT | CTLFLAG_MPSAFE, sc, 0, 444 ds3231_conv_sysctl, "IU", --- 118 unchanged lines hidden (view full) --- 563 ct.hour = 12; 564 } else 565 pmflags = 0; 566 567 data[DS3231_SECS] = TOBCD(ct.sec); 568 data[DS3231_MINS] = TOBCD(ct.min); 569 data[DS3231_HOUR] = TOBCD(ct.hour) | pmflags; 570 data[DS3231_DATE] = TOBCD(ct.day); | 443 /* Temperature. */ 444 SYSCTL_ADD_PROC(ctx, tree, OID_AUTO, "temperature", 445 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, sc, 0, 446 ds3231_temp_sysctl, "IK", "Current temperature"); 447 /* Configuration parameters. */ 448 SYSCTL_ADD_PROC(ctx, tree, OID_AUTO, "temp_conv", 449 CTLFLAG_RW | CTLTYPE_UINT | CTLFLAG_MPSAFE, sc, 0, 450 ds3231_conv_sysctl, "IU", --- 118 unchanged lines hidden (view full) --- 569 ct.hour = 12; 570 } else 571 pmflags = 0; 572 573 data[DS3231_SECS] = TOBCD(ct.sec); 574 data[DS3231_MINS] = TOBCD(ct.min); 575 data[DS3231_HOUR] = TOBCD(ct.hour) | pmflags; 576 data[DS3231_DATE] = TOBCD(ct.day); |
| 571 data[DS3231_WEEKDAY] = ct.dow; | 577 data[DS3231_WEEKDAY] = ct.dow + 1; |
| 572 data[DS3231_MONTH] = TOBCD(ct.mon); 573 data[DS3231_YEAR] = TOBCD(ct.year % 100); 574 if (sc->sc_last_c) 575 data[DS3231_MONTH] |= DS3231_C_MASK; 576 577 /* Write the time back to RTC. */ 578 error = iicdev_writeto(dev, DS3231_SECS, data, sizeof(data), 579 IIC_INTRWAIT); --- 46 unchanged lines hidden --- | 578 data[DS3231_MONTH] = TOBCD(ct.mon); 579 data[DS3231_YEAR] = TOBCD(ct.year % 100); 580 if (sc->sc_last_c) 581 data[DS3231_MONTH] |= DS3231_C_MASK; 582 583 /* Write the time back to RTC. */ 584 error = iicdev_writeto(dev, DS3231_SECS, data, sizeof(data), 585 IIC_INTRWAIT); --- 46 unchanged lines hidden --- |