12 #include <linux/rtc.h>
19 #define rtc_err(rtc, fmt, ...) \  argument
20 		dev_err(rtc->da9052->dev, "%s: " fmt, __func__, ##__VA_ARGS__)
25 	struct rtc_device *rtc;  member
29 static int da9052_rtc_enable_alarm(struct da9052_rtc *rtc, bool enable)  in da9052_rtc_enable_alarm()  argument
33 		ret = da9052_reg_update(rtc->da9052, DA9052_ALARM_Y_REG,  in da9052_rtc_enable_alarm()
37 			rtc_err(rtc, "Failed to enable ALM: %d\n", ret);  in da9052_rtc_enable_alarm()
39 		ret = da9052_reg_update(rtc->da9052, DA9052_ALARM_Y_REG,  in da9052_rtc_enable_alarm()
42 			rtc_err(rtc, "Write error: %d\n", ret);  in da9052_rtc_enable_alarm()
49 	struct da9052_rtc *rtc = data;  in da9052_rtc_irq()  local
51 	rtc_update_irq(rtc->rtc, 1, RTC_IRQF | RTC_AF);  in da9052_rtc_irq()
56 static int da9052_read_alarm(struct da9052_rtc *rtc, struct rtc_time *rtc_tm)  in da9052_read_alarm()  argument
63 	ret = da9052_group_read(rtc->da9052, DA9052_ALARM_MI_REG, 5, &v[0][0]);  in da9052_read_alarm()
65 		rtc_err(rtc, "Failed to group read ALM: %d\n", ret);  in da9052_read_alarm()
70 		ret = da9052_group_read(rtc->da9052,  in da9052_read_alarm()
73 			rtc_err(rtc, "Failed to group read ALM: %d\n", ret);  in da9052_read_alarm()
94 	rtc_err(rtc, "Timed out reading alarm time\n");  in da9052_read_alarm()
99 static int da9052_set_alarm(struct da9052_rtc *rtc, struct rtc_time *rtc_tm)  in da9052_set_alarm()  argument
101 	struct da9052 *da9052 = rtc->da9052;  in da9052_set_alarm()
120 		rtc_err(rtc, "Failed to write ALRM MIN: %d\n", ret);  in da9052_set_alarm()
135 		rtc_err(rtc, "Failed to write ALRM YEAR: %d\n", ret);  in da9052_set_alarm()
140 static int da9052_rtc_get_alarm_status(struct da9052_rtc *rtc)  in da9052_rtc_get_alarm_status()  argument
144 	ret = da9052_reg_read(rtc->da9052, DA9052_ALARM_Y_REG);  in da9052_rtc_get_alarm_status()
146 		rtc_err(rtc, "Failed to read ALM: %d\n", ret);  in da9052_rtc_get_alarm_status()
155 	struct da9052_rtc *rtc = dev_get_drvdata(dev);  in da9052_rtc_read_time()  local
161 	ret = da9052_group_read(rtc->da9052, DA9052_COUNT_S_REG, 6, &v[0][0]);  in da9052_rtc_read_time()
163 		rtc_err(rtc, "Failed to read RTC time : %d\n", ret);  in da9052_rtc_read_time()
168 		ret = da9052_group_read(rtc->da9052,  in da9052_rtc_read_time()
171 			rtc_err(rtc, "Failed to read RTC time : %d\n", ret);  in da9052_rtc_read_time()
191 	rtc_err(rtc, "Timed out reading time\n");  in da9052_rtc_read_time()
198 	struct da9052_rtc *rtc;  in da9052_rtc_set_time()  local
206 	rtc = dev_get_drvdata(dev);  in da9052_rtc_set_time()
215 	ret = da9052_group_write(rtc->da9052, DA9052_COUNT_S_REG, 6, v);  in da9052_rtc_set_time()
217 		rtc_err(rtc, "failed to set RTC time: %d\n", ret);  in da9052_rtc_set_time()
225 	struct da9052_rtc *rtc = dev_get_drvdata(dev);  in da9052_rtc_read_alarm()  local
227 	ret = da9052_read_alarm(rtc, tm);  in da9052_rtc_read_alarm()
229 		rtc_err(rtc, "failed to read RTC alarm: %d\n", ret);  in da9052_rtc_read_alarm()
233 	alrm->enabled = da9052_rtc_get_alarm_status(rtc);  in da9052_rtc_read_alarm()
241 	struct da9052_rtc *rtc = dev_get_drvdata(dev);  in da9052_rtc_set_alarm()  local
247 	ret = da9052_rtc_enable_alarm(rtc, 0);  in da9052_rtc_set_alarm()
251 	ret = da9052_set_alarm(rtc, tm);  in da9052_rtc_set_alarm()
255 	ret = da9052_rtc_enable_alarm(rtc, 1);  in da9052_rtc_set_alarm()
261 	struct da9052_rtc *rtc = dev_get_drvdata(dev);  in da9052_rtc_alarm_irq_enable()  local
263 	return da9052_rtc_enable_alarm(rtc, enabled);  in da9052_rtc_alarm_irq_enable()
276 	struct da9052_rtc *rtc;  in da9052_rtc_probe()  local
279 	rtc = devm_kzalloc(&pdev->dev, sizeof(struct da9052_rtc), GFP_KERNEL);  in da9052_rtc_probe()
280 	if (!rtc)  in da9052_rtc_probe()
283 	rtc->da9052 = dev_get_drvdata(pdev->dev.parent);  in da9052_rtc_probe()
284 	platform_set_drvdata(pdev, rtc);  in da9052_rtc_probe()
286 	ret = da9052_reg_write(rtc->da9052, DA9052_BBAT_CONT_REG, 0xFE);  in da9052_rtc_probe()
288 		rtc_err(rtc,  in da9052_rtc_probe()
289 			"Failed to setup RTC battery charging: %d\n", ret);  in da9052_rtc_probe()
293 	ret = da9052_reg_update(rtc->da9052, DA9052_ALARM_Y_REG,  in da9052_rtc_probe()
296 		rtc_err(rtc, "Failed to disable TICKS: %d\n", ret);  in da9052_rtc_probe()
299 	rtc->rtc = devm_rtc_allocate_device(&pdev->dev);  in da9052_rtc_probe()
300 	if (IS_ERR(rtc->rtc))  in da9052_rtc_probe()
301 		return PTR_ERR(rtc->rtc);  in da9052_rtc_probe()
303 	rtc->rtc->ops = &da9052_rtc_ops;  in da9052_rtc_probe()
304 	rtc->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;  in da9052_rtc_probe()
305 	rtc->rtc->range_max = RTC_TIMESTAMP_END_2063;  in da9052_rtc_probe()
307 	ret = devm_rtc_register_device(rtc->rtc);  in da9052_rtc_probe()
311 	ret = da9052_request_irq(rtc->da9052, DA9052_IRQ_ALARM, "ALM",  in da9052_rtc_probe()
312 				da9052_rtc_irq, rtc);  in da9052_rtc_probe()
314 		rtc_err(rtc, "irq registration failed: %d\n", ret);  in da9052_rtc_probe()
324 		.name	= "da9052-rtc",
331 MODULE_DESCRIPTION("RTC driver for Dialog DA9052 PMIC");
333 MODULE_ALIAS("platform:da9052-rtc");