15 #include <linux/rtc.h>
16 #include <linux/mfd/mt6397/rtc.h>
19 static int mtk_rtc_write_trigger(struct mt6397_rtc *rtc)  in mtk_rtc_write_trigger()  argument
24 	ret = regmap_write(rtc->regmap, rtc->addr_base + rtc->data->wrtgr, 1);  in mtk_rtc_write_trigger()
28 	ret = regmap_read_poll_timeout(rtc->regmap,  in mtk_rtc_write_trigger()
29 					rtc->addr_base + RTC_BBPU, data,  in mtk_rtc_write_trigger()
34 		dev_err(rtc->rtc_dev->dev.parent,  in mtk_rtc_write_trigger()
42 	struct mt6397_rtc *rtc = data;  in mtk_rtc_irq_handler_thread()  local
46 	ret = regmap_read(rtc->regmap, rtc->addr_base + RTC_IRQ_STA, &irqsta);  in mtk_rtc_irq_handler_thread()
48 		rtc_update_irq(rtc->rtc_dev, 1, RTC_IRQF | RTC_AF);  in mtk_rtc_irq_handler_thread()
50 		mutex_lock(&rtc->lock);  in mtk_rtc_irq_handler_thread()
51 		if (regmap_write(rtc->regmap, rtc->addr_base + RTC_IRQ_EN,  in mtk_rtc_irq_handler_thread()
53 			mtk_rtc_write_trigger(rtc);  in mtk_rtc_irq_handler_thread()
54 		mutex_unlock(&rtc->lock);  in mtk_rtc_irq_handler_thread()
62 static int __mtk_rtc_read_time(struct mt6397_rtc *rtc,  in __mtk_rtc_read_time()  argument
68 	mutex_lock(&rtc->lock);  in __mtk_rtc_read_time()
69 	ret = regmap_bulk_read(rtc->regmap, rtc->addr_base + RTC_TC_SEC,  in __mtk_rtc_read_time()
81 	ret = regmap_read(rtc->regmap, rtc->addr_base + RTC_TC_SEC, sec);  in __mtk_rtc_read_time()
83 	mutex_unlock(&rtc->lock);  in __mtk_rtc_read_time()
90 	struct mt6397_rtc *rtc = dev_get_drvdata(dev);  in mtk_rtc_read_time()  local
94 		ret = __mtk_rtc_read_time(rtc, tm, &sec);  in mtk_rtc_read_time()
121 	struct mt6397_rtc *rtc = dev_get_drvdata(dev);  in mtk_rtc_set_time()  local
135 	mutex_lock(&rtc->lock);  in mtk_rtc_set_time()
136 	ret = regmap_bulk_write(rtc->regmap, rtc->addr_base + RTC_TC_SEC,  in mtk_rtc_set_time()
142 	ret = mtk_rtc_write_trigger(rtc);  in mtk_rtc_set_time()
145 	mutex_unlock(&rtc->lock);  in mtk_rtc_set_time()
152 	struct mt6397_rtc *rtc = dev_get_drvdata(dev);  in mtk_rtc_read_alarm()  local
157 	mutex_lock(&rtc->lock);  in mtk_rtc_read_alarm()
158 	ret = regmap_read(rtc->regmap, rtc->addr_base + RTC_IRQ_EN, &irqen);  in mtk_rtc_read_alarm()
161 	ret = regmap_read(rtc->regmap, rtc->addr_base + RTC_PDN2, &pdn2);  in mtk_rtc_read_alarm()
165 	ret = regmap_bulk_read(rtc->regmap, rtc->addr_base + RTC_AL_SEC,  in mtk_rtc_read_alarm()
172 	mutex_unlock(&rtc->lock);  in mtk_rtc_read_alarm()
186 	mutex_unlock(&rtc->lock);  in mtk_rtc_read_alarm()
193 	struct mt6397_rtc *rtc = dev_get_drvdata(dev);  in mtk_rtc_set_alarm()  local
200 	mutex_lock(&rtc->lock);  in mtk_rtc_set_alarm()
201 	ret = regmap_bulk_read(rtc->regmap, rtc->addr_base + RTC_AL_SEC,  in mtk_rtc_set_alarm()
220 		ret = regmap_bulk_write(rtc->regmap,  in mtk_rtc_set_alarm()
221 					rtc->addr_base + RTC_AL_SEC,  in mtk_rtc_set_alarm()
225 		ret = regmap_write(rtc->regmap, rtc->addr_base + RTC_AL_MASK,  in mtk_rtc_set_alarm()
229 		ret = regmap_update_bits(rtc->regmap,  in mtk_rtc_set_alarm()
230 					 rtc->addr_base + RTC_IRQ_EN,  in mtk_rtc_set_alarm()
236 		ret = regmap_update_bits(rtc->regmap,  in mtk_rtc_set_alarm()
237 					 rtc->addr_base + RTC_IRQ_EN,  in mtk_rtc_set_alarm()
247 	ret = mtk_rtc_write_trigger(rtc);  in mtk_rtc_set_alarm()
249 	mutex_unlock(&rtc->lock);  in mtk_rtc_set_alarm()
264 	struct mt6397_rtc *rtc;  in mtk_rtc_probe()  local
267 	rtc = devm_kzalloc(&pdev->dev, sizeof(struct mt6397_rtc), GFP_KERNEL);  in mtk_rtc_probe()
268 	if (!rtc)  in mtk_rtc_probe()
274 	rtc->addr_base = res->start;  in mtk_rtc_probe()
276 	rtc->data = of_device_get_match_data(&pdev->dev);  in mtk_rtc_probe()
278 	rtc->irq = platform_get_irq(pdev, 0);  in mtk_rtc_probe()
279 	if (rtc->irq < 0)  in mtk_rtc_probe()
280 		return rtc->irq;  in mtk_rtc_probe()
282 	rtc->regmap = mt6397_chip->regmap;  in mtk_rtc_probe()
283 	mutex_init(&rtc->lock);  in mtk_rtc_probe()
285 	platform_set_drvdata(pdev, rtc);  in mtk_rtc_probe()
287 	rtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev);  in mtk_rtc_probe()
288 	if (IS_ERR(rtc->rtc_dev))  in mtk_rtc_probe()
289 		return PTR_ERR(rtc->rtc_dev);  in mtk_rtc_probe()
291 	ret = devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL,  in mtk_rtc_probe()
294 					"mt6397-rtc", rtc);  in mtk_rtc_probe()
298 			rtc->irq, ret);  in mtk_rtc_probe()
304 	rtc->rtc_dev->ops = &mtk_rtc_ops;  in mtk_rtc_probe()
306 	return devm_rtc_register_device(rtc->rtc_dev);  in mtk_rtc_probe()
312 	struct mt6397_rtc *rtc = dev_get_drvdata(dev);  in mt6397_rtc_suspend()  local
315 		enable_irq_wake(rtc->irq);  in mt6397_rtc_suspend()
322 	struct mt6397_rtc *rtc = dev_get_drvdata(dev);  in mt6397_rtc_resume()  local
325 		disable_irq_wake(rtc->irq);  in mt6397_rtc_resume()
343 	{ .compatible = "mediatek,mt6323-rtc", .data = &mt6397_rtc_data },
344 	{ .compatible = "mediatek,mt6358-rtc", .data = &mt6358_rtc_data },
345 	{ .compatible = "mediatek,mt6397-rtc", .data = &mt6397_rtc_data },
352 		.name = "mt6397-rtc",
363 MODULE_DESCRIPTION("RTC Driver for MediaTek MT6397 PMIC");