Lines Matching full:pcf2127
3 * An I2C and SPI driver for the NXP PCF2127/29/31 RTC
16 * Datasheets: https://www.nxp.com/docs/en/data-sheet/PCF2127.pdf
75 * PCF2127 has 512 bytes general-purpose static RAM (SRAM) that is
85 /* PCF2127/29 watchdog timer value constants */
157 PCF2127, enumerator
204 struct pcf2127 { struct
215 * In the routines that deal directly with the pcf2127 hardware, we use argument
220 struct pcf2127 *pcf2127 = dev_get_drvdata(dev); in pcf2127_rtc_read_time() local
228 ret = regmap_bulk_read(pcf2127->regmap, pcf2127->cfg->reg_time_base, in pcf2127_rtc_read_time()
271 struct pcf2127 *pcf2127 = dev_get_drvdata(dev); in pcf2127_rtc_set_time() local
295 * PCF2127/29: no special action required. in pcf2127_rtc_set_time()
299 if (pcf2127->cfg->type == PCF2131) { in pcf2127_rtc_set_time()
300 err = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL1, in pcf2127_rtc_set_time()
308 err = regmap_write(pcf2127->regmap, PCF2131_REG_SR_RESET, in pcf2127_rtc_set_time()
317 err = regmap_bulk_write(pcf2127->regmap, pcf2127->cfg->reg_time_base, buf, i); in pcf2127_rtc_set_time()
323 if (pcf2127->cfg->type == PCF2131) { in pcf2127_rtc_set_time()
325 err = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL1, in pcf2127_rtc_set_time()
338 struct pcf2127 *pcf2127 = dev_get_drvdata(dev); in pcf2127_param_get() local
344 ret = regmap_read(pcf2127->regmap, PCF2127_REG_CTRL3, &value); in pcf2127_param_get()
368 struct pcf2127 *pcf2127 = dev_get_drvdata(dev); in pcf2127_param_set() local
375 ret = regmap_read(pcf2127->regmap, PCF2127_REG_CTRL3, &value); in pcf2127_param_set()
401 return regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL3, in pcf2127_param_set()
417 struct pcf2127 *pcf2127 = dev_get_drvdata(dev); in pcf2127_rtc_ioctl() local
423 ret = regmap_read(pcf2127->regmap, PCF2127_REG_CTRL3, &val); in pcf2127_rtc_ioctl()
436 return regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL3, in pcf2127_rtc_ioctl()
447 struct pcf2127 *pcf2127 = priv; in pcf2127_nvmem_read() local
451 ret = regmap_bulk_write(pcf2127->regmap, PCF2127_REG_RAM_ADDR_MSB, in pcf2127_nvmem_read()
456 return regmap_bulk_read(pcf2127->regmap, PCF2127_REG_RAM_RD_CMD, in pcf2127_nvmem_read()
463 struct pcf2127 *pcf2127 = priv; in pcf2127_nvmem_write() local
467 ret = regmap_bulk_write(pcf2127->regmap, PCF2127_REG_RAM_ADDR_MSB, in pcf2127_nvmem_write()
472 return regmap_bulk_write(pcf2127->regmap, PCF2127_REG_RAM_WRT_CMD, in pcf2127_nvmem_write()
481 struct pcf2127 *pcf2127 = watchdog_get_drvdata(wdd); in pcf2127_wdt_ping() local
487 wd_val = ((wdd->timeout * pcf2127->cfg->wdd_clock_hz_x1000) / 1000) + 1; in pcf2127_wdt_ping()
489 return regmap_write(pcf2127->regmap, pcf2127->cfg->reg_wd_val, wd_val); in pcf2127_wdt_ping()
521 struct pcf2127 *pcf2127 = watchdog_get_drvdata(wdd); in pcf2127_wdt_stop() local
523 return regmap_write(pcf2127->regmap, pcf2127->cfg->reg_wd_val, in pcf2127_wdt_stop()
539 .identity = "NXP PCF2127/PCF2129 Watchdog",
555 * The PCF2127/29 datasheet gives t as:
568 static int pcf2127_watchdog_init(struct device *dev, struct pcf2127 *pcf2127) in pcf2127_watchdog_init() argument
576 pcf2127->wdd.parent = dev; in pcf2127_watchdog_init()
577 pcf2127->wdd.info = &pcf2127_wdt_info; in pcf2127_watchdog_init()
578 pcf2127->wdd.ops = &pcf2127_watchdog_ops; in pcf2127_watchdog_init()
580 pcf2127->wdd.min_timeout = in pcf2127_watchdog_init()
582 2, pcf2127->cfg->wdd_clock_hz_x1000); in pcf2127_watchdog_init()
583 pcf2127->wdd.max_timeout = in pcf2127_watchdog_init()
585 255, pcf2127->cfg->wdd_clock_hz_x1000); in pcf2127_watchdog_init()
586 pcf2127->wdd.timeout = PCF2127_WD_DEFAULT_TIMEOUT_S; in pcf2127_watchdog_init()
589 pcf2127->cfg->wdd_clock_hz_x1000); in pcf2127_watchdog_init()
591 pcf2127->wdd.min_hw_heartbeat_ms = pcf2127->cfg->wdd_min_hw_heartbeat_ms; in pcf2127_watchdog_init()
592 pcf2127->wdd.status = WATCHDOG_NOWAYOUT_INIT_STATUS; in pcf2127_watchdog_init()
594 watchdog_set_drvdata(&pcf2127->wdd, pcf2127); in pcf2127_watchdog_init()
597 if (pcf2127->cfg->wd_val_reg_readable) { in pcf2127_watchdog_init()
600 ret = regmap_read(pcf2127->regmap, pcf2127->cfg->reg_wd_val, in pcf2127_watchdog_init()
606 set_bit(WDOG_HW_RUNNING, &pcf2127->wdd.status); in pcf2127_watchdog_init()
609 return devm_watchdog_register_device(dev, &pcf2127->wdd); in pcf2127_watchdog_init()
615 struct pcf2127 *pcf2127 = dev_get_drvdata(dev); in pcf2127_rtc_read_alarm() local
620 ret = regmap_read(pcf2127->regmap, PCF2127_REG_CTRL2, &ctrl2); in pcf2127_rtc_read_alarm()
624 ret = pcf2127_wdt_active_ping(&pcf2127->wdd); in pcf2127_rtc_read_alarm()
628 ret = regmap_bulk_read(pcf2127->regmap, pcf2127->cfg->regs_alarm_base, in pcf2127_rtc_read_alarm()
646 struct pcf2127 *pcf2127 = dev_get_drvdata(dev); in pcf2127_rtc_alarm_irq_enable() local
649 ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL2, in pcf2127_rtc_alarm_irq_enable()
655 return pcf2127_wdt_active_ping(&pcf2127->wdd); in pcf2127_rtc_alarm_irq_enable()
660 struct pcf2127 *pcf2127 = dev_get_drvdata(dev); in pcf2127_rtc_set_alarm() local
664 ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL2, in pcf2127_rtc_set_alarm()
669 ret = pcf2127_wdt_active_ping(&pcf2127->wdd); in pcf2127_rtc_set_alarm()
679 ret = regmap_bulk_write(pcf2127->regmap, pcf2127->cfg->regs_alarm_base, in pcf2127_rtc_set_alarm()
694 struct pcf2127 *pcf2127 = dev_get_drvdata(dev); in pcf2127_rtc_ts_read() local
699 ret = regmap_bulk_read(pcf2127->regmap, pcf2127->cfg->ts[ts_id].reg_base, in pcf2127_rtc_ts_read()
732 struct pcf2127 *pcf2127 = dev_get_drvdata(dev); in pcf2127_rtc_ts_snapshot() local
735 if (ts_id >= pcf2127->cfg->ts_count) in pcf2127_rtc_ts_snapshot()
739 if (pcf2127->ts_valid[ts_id]) in pcf2127_rtc_ts_snapshot()
742 ret = pcf2127_rtc_ts_read(dev, &pcf2127->ts[ts_id], ts_id); in pcf2127_rtc_ts_snapshot()
744 pcf2127->ts_valid[ts_id] = true; in pcf2127_rtc_ts_snapshot()
749 struct pcf2127 *pcf2127 = dev_get_drvdata(dev); in pcf2127_rtc_irq() local
753 ret = regmap_read(pcf2127->regmap, PCF2127_REG_CTRL2, &ctrl2); in pcf2127_rtc_irq()
757 if (pcf2127->cfg->ts_count == 1) { in pcf2127_rtc_irq()
758 /* PCF2127/29 */ in pcf2127_rtc_irq()
761 ret = regmap_read(pcf2127->regmap, PCF2127_REG_CTRL1, &ctrl1); in pcf2127_rtc_irq()
772 regmap_write(pcf2127->regmap, PCF2127_REG_CTRL1, in pcf2127_rtc_irq()
776 regmap_write(pcf2127->regmap, PCF2127_REG_CTRL2, in pcf2127_rtc_irq()
782 ret = regmap_read(pcf2127->regmap, PCF2131_REG_CTRL4, &ctrl4); in pcf2127_rtc_irq()
793 for (i = 0; i < pcf2127->cfg->ts_count; i++) { in pcf2127_rtc_irq()
800 regmap_write(pcf2127->regmap, PCF2131_REG_CTRL4, in pcf2127_rtc_irq()
805 regmap_write(pcf2127->regmap, PCF2127_REG_CTRL2, in pcf2127_rtc_irq()
810 rtc_update_irq(pcf2127->rtc, 1, RTC_IRQF | RTC_AF); in pcf2127_rtc_irq()
812 pcf2127_wdt_active_ping(&pcf2127->wdd); in pcf2127_rtc_irq()
834 struct pcf2127 *pcf2127 = dev_get_drvdata(dev->parent); in timestamp_store() local
837 if (ts_id >= pcf2127->cfg->ts_count) in timestamp_store()
840 if (pcf2127->irq_enabled) { in timestamp_store()
841 pcf2127->ts_valid[ts_id] = false; in timestamp_store()
844 ret = regmap_update_bits(pcf2127->regmap, in timestamp_store()
845 pcf2127->cfg->ts[ts_id].gnd_detect_reg, in timestamp_store()
846 pcf2127->cfg->ts[ts_id].gnd_detect_bit, in timestamp_store()
854 if (pcf2127->cfg->ts[ts_id].inter_detect_bit) { in timestamp_store()
856 ret = regmap_update_bits(pcf2127->regmap, in timestamp_store()
857 pcf2127->cfg->ts[ts_id].inter_detect_reg, in timestamp_store()
858 pcf2127->cfg->ts[ts_id].inter_detect_bit, in timestamp_store()
867 ret = pcf2127_wdt_active_ping(&pcf2127->wdd); in timestamp_store()
907 struct pcf2127 *pcf2127 = dev_get_drvdata(dev->parent); in timestamp_show() local
911 if (ts_id >= pcf2127->cfg->ts_count) in timestamp_show()
914 if (pcf2127->irq_enabled) { in timestamp_show()
915 if (!pcf2127->ts_valid[ts_id]) in timestamp_show()
917 ts = pcf2127->ts[ts_id]; in timestamp_show()
926 ret = regmap_read(pcf2127->regmap, in timestamp_show()
927 pcf2127->cfg->ts[ts_id].gnd_detect_reg, in timestamp_show()
932 valid_low = ctrl & pcf2127->cfg->ts[ts_id].gnd_detect_bit; in timestamp_show()
934 if (pcf2127->cfg->ts[ts_id].inter_detect_bit) { in timestamp_show()
938 ret = regmap_read(pcf2127->regmap, in timestamp_show()
939 pcf2127->cfg->ts[ts_id].inter_detect_reg, in timestamp_show()
944 valid_inter = ctrl & pcf2127->cfg->ts[ts_id].inter_detect_bit; in timestamp_show()
954 ret = pcf2127_wdt_active_ping(&pcf2127->wdd); in timestamp_show()
1004 [PCF2127] = {
1005 .type = PCF2127,
1118 struct pcf2127 *pcf2127 = dev_get_drvdata(dev); in pcf2127_enable_ts() local
1121 if (ts_id >= pcf2127->cfg->ts_count) { in pcf2127_enable_ts()
1128 ret = regmap_update_bits(pcf2127->regmap, in pcf2127_enable_ts()
1129 pcf2127->cfg->ts[ts_id].reg_base, in pcf2127_enable_ts()
1144 ret = regmap_update_bits(pcf2127->regmap, pcf2127->cfg->ts[ts_id].ie_reg, in pcf2127_enable_ts()
1145 pcf2127->cfg->ts[ts_id].ie_bit, in pcf2127_enable_ts()
1146 pcf2127->cfg->ts[ts_id].ie_bit); in pcf2127_enable_ts()
1159 struct pcf2127 *pcf2127 = dev_get_drvdata(dev); in pcf2127_configure_interrupt_pins() local
1165 ret = regmap_write(pcf2127->regmap, in pcf2127_configure_interrupt_pins()
1170 ret = regmap_write(pcf2127->regmap, in pcf2127_configure_interrupt_pins()
1181 struct pcf2127 *pcf2127; in pcf2127_probe() local
1187 pcf2127 = devm_kzalloc(dev, sizeof(*pcf2127), GFP_KERNEL); in pcf2127_probe()
1188 if (!pcf2127) in pcf2127_probe()
1191 pcf2127->regmap = regmap; in pcf2127_probe()
1192 pcf2127->cfg = config; in pcf2127_probe()
1194 dev_set_drvdata(dev, pcf2127); in pcf2127_probe()
1196 pcf2127->rtc = devm_rtc_allocate_device(dev); in pcf2127_probe()
1197 if (IS_ERR(pcf2127->rtc)) in pcf2127_probe()
1198 return PTR_ERR(pcf2127->rtc); in pcf2127_probe()
1200 pcf2127->rtc->ops = &pcf2127_rtc_ops; in pcf2127_probe()
1201 pcf2127->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; in pcf2127_probe()
1202 pcf2127->rtc->range_max = RTC_TIMESTAMP_END_2099; in pcf2127_probe()
1203 pcf2127->rtc->set_start_time = true; /* Sets actual start to 1970 */ in pcf2127_probe()
1206 * PCF2127/29 do not work correctly when setting alarms at 1s intervals. in pcf2127_probe()
1209 if (pcf2127->cfg->type == PCF2127 || pcf2127->cfg->type == PCF2129) { in pcf2127_probe()
1210 set_bit(RTC_FEATURE_ALARM_RES_2S, pcf2127->rtc->features); in pcf2127_probe()
1211 clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, pcf2127->rtc->features); in pcf2127_probe()
1214 clear_bit(RTC_FEATURE_ALARM, pcf2127->rtc->features); in pcf2127_probe()
1236 pcf2127->irq_enabled = true; in pcf2127_probe()
1241 set_bit(RTC_FEATURE_ALARM, pcf2127->rtc->features); in pcf2127_probe()
1244 if (pcf2127->cfg->has_int_a_b) { in pcf2127_probe()
1253 if (pcf2127->cfg->has_nvmem) { in pcf2127_probe()
1255 .priv = pcf2127, in pcf2127_probe()
1261 ret = devm_rtc_nvmem_register(pcf2127->rtc, &nvmem_cfg); in pcf2127_probe()
1268 ret = regmap_clear_bits(pcf2127->regmap, PCF2127_REG_CTRL1, in pcf2127_probe()
1273 ret = regmap_read(pcf2127->regmap, pcf2127->cfg->reg_clkout, &val); in pcf2127_probe()
1278 ret = regmap_set_bits(pcf2127->regmap, pcf2127->cfg->reg_clkout, in pcf2127_probe()
1295 ret = regmap_update_bits(pcf2127->regmap, pcf2127->cfg->reg_wd_ctl, in pcf2127_probe()
1301 (pcf2127->cfg->has_bit_wd_ctl_cd0 ? PCF2127_BIT_WD_CTL_CD0 : 0) | in pcf2127_probe()
1308 pcf2127_watchdog_init(dev, pcf2127); in pcf2127_probe()
1316 ret = regmap_update_bits(pcf2127->regmap, PCF2127_REG_CTRL3, in pcf2127_probe()
1329 for (int i = 0; i < pcf2127->cfg->ts_count; i++) { in pcf2127_probe()
1335 ret = rtc_add_group(pcf2127->rtc, &pcf2127->cfg->attribute_group); in pcf2127_probe()
1342 return devm_rtc_register_device(pcf2127->rtc); in pcf2127_probe()
1347 { .compatible = "nxp,pcf2127", .data = &pcf21xx_cfg[PCF2127] },
1435 { "pcf2127", PCF2127 },
1483 .name = "rtc-pcf2127-i2c",
1554 { "pcf2127", PCF2127 },
1564 .name = "rtc-pcf2127-spi",
1600 pr_err("Failed to register pcf2127 i2c driver: %d\n", ret); in pcf2127_init()
1606 pr_err("Failed to register pcf2127 spi driver: %d\n", ret); in pcf2127_init()
1622 MODULE_DESCRIPTION("NXP PCF2127/29/31 RTC driver");