3  * RTC driver for the Micro Crystal RV3032
118 static int rv3032_exit_eerd(struct rv3032_data *rv3032, u32 eerd)  in rv3032_exit_eerd()  argument
123 	return regmap_update_bits(rv3032->regmap, RV3032_CTRL1, RV3032_CTRL1_EERD, 0);  in rv3032_exit_eerd()
126 static int rv3032_enter_eerd(struct rv3032_data *rv3032, u32 *eerd)  in rv3032_enter_eerd()  argument
131 	ret = regmap_read(rv3032->regmap, RV3032_CTRL1, &ctrl1);  in rv3032_enter_eerd()
139 	ret = regmap_update_bits(rv3032->regmap, RV3032_CTRL1,  in rv3032_enter_eerd()
144 	ret = regmap_read_poll_timeout(rv3032->regmap, RV3032_TLSB, status,  in rv3032_enter_eerd()
148 		rv3032_exit_eerd(rv3032, *eerd);  in rv3032_enter_eerd()
156 static int rv3032_update_cfg(struct rv3032_data *rv3032, unsigned int reg,  in rv3032_update_cfg()  argument
162 	ret = rv3032_enter_eerd(rv3032, &eerd);  in rv3032_update_cfg()
166 	ret = regmap_update_bits(rv3032->regmap, reg, mask, val);  in rv3032_update_cfg()
170 	ret = regmap_write(rv3032->regmap, RV3032_EEPROM_CMD, RV3032_EEPROM_CMD_UPDATE);  in rv3032_update_cfg()
176 	ret = regmap_read_poll_timeout(rv3032->regmap, RV3032_TLSB, status,  in rv3032_update_cfg()
181 	rv3032_exit_eerd(rv3032, eerd);  in rv3032_update_cfg()
188 	struct rv3032_data *rv3032 = dev_id;  in rv3032_handle_irq()  local
192 	if (regmap_read(rv3032->regmap, RV3032_STATUS, &status) < 0 ||  in rv3032_handle_irq()
216 		rtc_update_irq(rv3032->rtc, 1, events);  in rv3032_handle_irq()
217 		regmap_update_bits(rv3032->regmap, RV3032_STATUS, status, 0);  in rv3032_handle_irq()
218 		regmap_update_bits(rv3032->regmap, RV3032_CTRL2, ctrl, 0);  in rv3032_handle_irq()
226 	struct rv3032_data *rv3032 = dev_get_drvdata(dev);  in rv3032_get_time()  local
230 	ret = regmap_read(rv3032->regmap, RV3032_STATUS, &status);  in rv3032_get_time()
237 	ret = regmap_bulk_read(rv3032->regmap, RV3032_SEC, date, sizeof(date));  in rv3032_get_time()
254 	struct rv3032_data *rv3032 = dev_get_drvdata(dev);  in rv3032_set_time()  local
266 	ret = regmap_bulk_write(rv3032->regmap, RV3032_SEC, date,  in rv3032_set_time()
271 	ret = regmap_update_bits(rv3032->regmap, RV3032_STATUS,  in rv3032_set_time()
279 	struct rv3032_data *rv3032 = dev_get_drvdata(dev);  in rv3032_get_alarm()  local
283 	ret = regmap_bulk_read(rv3032->regmap, RV3032_ALARM_MIN, alarmvals,  in rv3032_get_alarm()
288 	ret = regmap_read(rv3032->regmap, RV3032_STATUS, &status);  in rv3032_get_alarm()
292 	ret = regmap_read(rv3032->regmap, RV3032_CTRL2, &ctrl);  in rv3032_get_alarm()
309 	struct rv3032_data *rv3032 = dev_get_drvdata(dev);  in rv3032_set_alarm()  local
314 	ret = regmap_update_bits(rv3032->regmap, RV3032_CTRL2,  in rv3032_set_alarm()
323 	ret = regmap_update_bits(rv3032->regmap, RV3032_STATUS,  in rv3032_set_alarm()
328 	ret = regmap_bulk_write(rv3032->regmap, RV3032_ALARM_MIN, alarmvals,  in rv3032_set_alarm()
334 		if (rv3032->rtc->uie_rtctimer.enabled)  in rv3032_set_alarm()
336 		if (rv3032->rtc->aie_timer.enabled)  in rv3032_set_alarm()
340 	ret = regmap_update_bits(rv3032->regmap, RV3032_CTRL2,  in rv3032_set_alarm()
348 	struct rv3032_data *rv3032 = dev_get_drvdata(dev);  in rv3032_alarm_irq_enable()  local
352 		if (rv3032->rtc->uie_rtctimer.enabled)  in rv3032_alarm_irq_enable()
354 		if (rv3032->rtc->aie_timer.enabled)  in rv3032_alarm_irq_enable()
358 	ret = regmap_update_bits(rv3032->regmap, RV3032_STATUS,  in rv3032_alarm_irq_enable()
363 	ret = regmap_update_bits(rv3032->regmap, RV3032_CTRL2,  in rv3032_alarm_irq_enable()
373 	struct rv3032_data *rv3032 = dev_get_drvdata(dev);  in rv3032_read_offset()  local
376 	ret = regmap_read(rv3032->regmap, RV3032_OFFSET, &value);  in rv3032_read_offset()
389 	struct rv3032_data *rv3032 = dev_get_drvdata(dev);  in rv3032_set_offset()  local
394 	return rv3032_update_cfg(rv3032, RV3032_OFFSET, RV3032_OFFSET_MSK,  in rv3032_set_offset()
400 	struct rv3032_data *rv3032 = dev_get_drvdata(dev);  in rv3032_param_get()  local
407 		ret = regmap_read(rv3032->regmap, RV3032_PMU, &value);  in rv3032_param_get()
435 	struct rv3032_data *rv3032 = dev_get_drvdata(dev);  in rv3032_param_set()  local
440 		if (rv3032->trickle_charger_set)  in rv3032_param_set()
457 		return rv3032_update_cfg(rv3032, RV3032_PMU, RV3032_PMU_BSM,  in rv3032_param_set()
469 	struct rv3032_data *rv3032 = dev_get_drvdata(dev);  in rv3032_ioctl()  local
474 		ret = regmap_read(rv3032->regmap, RV3032_STATUS, &status);  in rv3032_ioctl()
499 	struct rv3032_data *rv3032 = priv;  in rv3032_eeprom_write()  local
504 	ret = rv3032_enter_eerd(rv3032, &eerd);  in rv3032_eeprom_write()
509 		ret = regmap_write(rv3032->regmap, RV3032_EEPROM_ADDR,  in rv3032_eeprom_write()
514 		ret = regmap_write(rv3032->regmap, RV3032_EEPROM_DATA, buf[i]);  in rv3032_eeprom_write()
518 		ret = regmap_write(rv3032->regmap, RV3032_EEPROM_CMD,  in rv3032_eeprom_write()
525 		ret = regmap_read_poll_timeout(rv3032->regmap, RV3032_TLSB, status,  in rv3032_eeprom_write()
533 	rv3032_exit_eerd(rv3032, eerd);  in rv3032_eeprom_write()
540 	struct rv3032_data *rv3032 = priv;  in rv3032_eeprom_read()  local
545 	ret = rv3032_enter_eerd(rv3032, &eerd);  in rv3032_eeprom_read()
550 		ret = regmap_write(rv3032->regmap, RV3032_EEPROM_ADDR,  in rv3032_eeprom_read()
555 		ret = regmap_write(rv3032->regmap, RV3032_EEPROM_CMD,  in rv3032_eeprom_read()
560 		ret = regmap_read_poll_timeout(rv3032->regmap, RV3032_TLSB, status,  in rv3032_eeprom_read()
566 		ret = regmap_read(rv3032->regmap, RV3032_EEPROM_DATA, &data);  in rv3032_eeprom_read()
573 	rv3032_exit_eerd(rv3032, eerd);  in rv3032_eeprom_read()
578 static int rv3032_trickle_charger_setup(struct device *dev, struct rv3032_data *rv3032)  in rv3032_trickle_charger_setup()  argument
606 	rv3032->trickle_charger_set = true;  in rv3032_trickle_charger_setup()
608 	return rv3032_update_cfg(rv3032, RV3032_PMU,  in rv3032_trickle_charger_setup()
629 	struct rv3032_data *rv3032 = clkout_hw_to_rv3032(hw);  in rv3032_clkout_recalc_rate()  local
631 	ret = regmap_read(rv3032->regmap, RV3032_CLKOUT2, &clkout);  in rv3032_clkout_recalc_rate()
638 		ret = regmap_read(rv3032->regmap, RV3032_CLKOUT1, &clkout);  in rv3032_clkout_recalc_rate()
668 	struct rv3032_data *rv3032 = clkout_hw_to_rv3032(hw);  in rv3032_clkout_set_rate()  local
674 			return rv3032_update_cfg(rv3032, RV3032_CLKOUT2, 0xff,  in rv3032_clkout_set_rate()
682 	ret = rv3032_enter_eerd(rv3032, &eerd);  in rv3032_clkout_set_rate()
686 	ret = regmap_write(rv3032->regmap, RV3032_CLKOUT1, hfd & 0xff);  in rv3032_clkout_set_rate()
690 	ret = regmap_write(rv3032->regmap, RV3032_CLKOUT2, RV3032_CLKOUT2_OS |  in rv3032_clkout_set_rate()
695 	ret = regmap_write(rv3032->regmap, RV3032_EEPROM_CMD, RV3032_EEPROM_CMD_UPDATE);  in rv3032_clkout_set_rate()
701 	ret = regmap_read_poll_timeout(rv3032->regmap, RV3032_TLSB, status,  in rv3032_clkout_set_rate()
706 	rv3032_exit_eerd(rv3032, eerd);  in rv3032_clkout_set_rate()
713 	struct rv3032_data *rv3032 = clkout_hw_to_rv3032(hw);  in rv3032_clkout_prepare()  local
715 	return rv3032_update_cfg(rv3032, RV3032_PMU, RV3032_PMU_NCLKE, 0);  in rv3032_clkout_prepare()
720 	struct rv3032_data *rv3032 = clkout_hw_to_rv3032(hw);  in rv3032_clkout_unprepare()  local
722 	rv3032_update_cfg(rv3032, RV3032_PMU, RV3032_PMU_NCLKE, RV3032_PMU_NCLKE);  in rv3032_clkout_unprepare()
728 	struct rv3032_data *rv3032 = clkout_hw_to_rv3032(hw);  in rv3032_clkout_is_prepared()  local
730 	ret = regmap_read(rv3032->regmap, RV3032_PMU, &val);  in rv3032_clkout_is_prepared()
746 static int rv3032_clkout_register_clk(struct rv3032_data *rv3032,  in rv3032_clkout_register_clk()  argument
754 	ret = regmap_update_bits(rv3032->regmap, RV3032_TLSB, RV3032_TLSB_CLKF, 0);  in rv3032_clkout_register_clk()
758 	ret = regmap_update_bits(rv3032->regmap, RV3032_CTRL2, RV3032_CTRL2_CLKIE, 0);  in rv3032_clkout_register_clk()
762 	ret = regmap_write(rv3032->regmap, RV3032_CLK_IRQ, 0);  in rv3032_clkout_register_clk()
766 	init.name = "rv3032-clkout";  in rv3032_clkout_register_clk()
771 	rv3032->clkout_hw.init = &init;  in rv3032_clkout_register_clk()
775 	clk = devm_clk_register(&client->dev, &rv3032->clkout_hw);  in rv3032_clkout_register_clk()
785 	struct rv3032_data *rv3032 = dev_get_drvdata(dev);  in rv3032_hwmon_read_temp()  local
790 	ret = regmap_bulk_read(rv3032->regmap, RV3032_TLSB, buf, sizeof(buf));  in rv3032_hwmon_read_temp()
801 		ret = regmap_bulk_read(rv3032->regmap, RV3032_TLSB, buf, sizeof(buf));  in rv3032_hwmon_read_temp()
863 	struct rv3032_data *rv3032 = dev_get_drvdata(dev);  in rv3032_hwmon_register()  local
868 	devm_hwmon_device_register_with_info(dev, "rv3032", rv3032, &rv3032_hwmon_chip_info, NULL);  in rv3032_hwmon_register()
892 	struct rv3032_data *rv3032;  in rv3032_probe()  local
913 	rv3032 = devm_kzalloc(&client->dev, sizeof(struct rv3032_data),  in rv3032_probe()
915 	if (!rv3032)  in rv3032_probe()
918 	rv3032->regmap = devm_regmap_init_i2c(client, &regmap_config);  in rv3032_probe()
919 	if (IS_ERR(rv3032->regmap))  in rv3032_probe()
920 		return PTR_ERR(rv3032->regmap);  in rv3032_probe()
922 	i2c_set_clientdata(client, rv3032);  in rv3032_probe()
924 	ret = regmap_read(rv3032->regmap, RV3032_STATUS, &status);  in rv3032_probe()
928 	rv3032->rtc = devm_rtc_allocate_device(&client->dev);  in rv3032_probe()
929 	if (IS_ERR(rv3032->rtc))  in rv3032_probe()
930 		return PTR_ERR(rv3032->rtc);  in rv3032_probe()
941 						"rv3032", rv3032);  in rv3032_probe()
948 		clear_bit(RTC_FEATURE_ALARM, rv3032->rtc->features);  in rv3032_probe()
950 	ret = regmap_update_bits(rv3032->regmap, RV3032_CTRL1,  in rv3032_probe()
955 	rv3032_trickle_charger_setup(&client->dev, rv3032);  in rv3032_probe()
957 	set_bit(RTC_FEATURE_BACKUP_SWITCH_MODE, rv3032->rtc->features);  in rv3032_probe()
958 	set_bit(RTC_FEATURE_ALARM_RES_MINUTE, rv3032->rtc->features);  in rv3032_probe()
960 	rv3032->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;  in rv3032_probe()
961 	rv3032->rtc->range_max = RTC_TIMESTAMP_END_2099;  in rv3032_probe()
962 	rv3032->rtc->ops = &rv3032_rtc_ops;  in rv3032_probe()
963 	ret = devm_rtc_register_device(rv3032->rtc);  in rv3032_probe()
967 	nvmem_cfg.priv = rv3032->regmap;  in rv3032_probe()
968 	devm_rtc_nvmem_register(rv3032->rtc, &nvmem_cfg);  in rv3032_probe()
969 	eeprom_cfg.priv = rv3032;  in rv3032_probe()
970 	devm_rtc_nvmem_register(rv3032->rtc, &eeprom_cfg);  in rv3032_probe()
972 	rv3032->rtc->max_user_freq = 1;  in rv3032_probe()
975 	rv3032_clkout_register_clk(rv3032, client);  in rv3032_probe()
990 	{ .compatible = "microcrystal,rv3032", },
997 		.name = "rtc-rv3032",
1006 MODULE_DESCRIPTION("Micro Crystal RV3032 RTC driver");