50 static u32 rtc_read_lp_counter(struct snvs_rtc_data *data)  in rtc_read_lp_counter()  argument
56 		regmap_read(data->regmap, data->offset + SNVS_LPSRTCMR, &val);  in rtc_read_lp_counter()
59 		regmap_read(data->regmap, data->offset + SNVS_LPSRTCLR, &val);  in rtc_read_lp_counter()
62 		regmap_read(data->regmap, data->offset + SNVS_LPSRTCMR, &val);  in rtc_read_lp_counter()
65 		regmap_read(data->regmap, data->offset + SNVS_LPSRTCLR, &val);  in rtc_read_lp_counter()
73 static void rtc_write_sync_lp(struct snvs_rtc_data *data)  in rtc_write_sync_lp()  argument
81 			regmap_read(data->regmap, data->offset + SNVS_LPSRTCLR, &count1);  in rtc_write_sync_lp()
82 			regmap_read(data->regmap, data->offset + SNVS_LPSRTCLR, &count2);  in rtc_write_sync_lp()
88 				regmap_read(data->regmap, data->offset + SNVS_LPSRTCLR, &count2);  in rtc_write_sync_lp()
89 				regmap_read(data->regmap, data->offset + SNVS_LPSRTCLR, &count3);  in rtc_write_sync_lp()
95 static int snvs_rtc_enable(struct snvs_rtc_data *data, bool enable)  in snvs_rtc_enable()  argument
100 	regmap_update_bits(data->regmap, data->offset + SNVS_LPCR, SNVS_LPCR_SRTC_ENV,  in snvs_rtc_enable()
104 		regmap_read(data->regmap, data->offset + SNVS_LPCR, &lpcr);  in snvs_rtc_enable()
123 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_read_time()  local
124 	unsigned long time = rtc_read_lp_counter(data);  in snvs_rtc_read_time()
133 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_set_time()  local
139 	snvs_rtc_enable(data, false);  in snvs_rtc_set_time()
142 	regmap_write(data->regmap, data->offset + SNVS_LPSRTCLR, time << CNTR_TO_SECS_SH);  in snvs_rtc_set_time()
143 	regmap_write(data->regmap, data->offset + SNVS_LPSRTCMR, time >> (32 - CNTR_TO_SECS_SH));  in snvs_rtc_set_time()
146 	snvs_rtc_enable(data, true);  in snvs_rtc_set_time()
153 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_read_alarm()  local
156 	regmap_read(data->regmap, data->offset + SNVS_LPTAR, &lptar);  in snvs_rtc_read_alarm()
159 	regmap_read(data->regmap, data->offset + SNVS_LPSR, &lpsr);  in snvs_rtc_read_alarm()
167 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_alarm_irq_enable()  local
169 	regmap_update_bits(data->regmap, data->offset + SNVS_LPCR,  in snvs_rtc_alarm_irq_enable()
173 	rtc_write_sync_lp(data);  in snvs_rtc_alarm_irq_enable()
180 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_set_alarm()  local
186 	regmap_update_bits(data->regmap, data->offset + SNVS_LPCR, SNVS_LPCR_LPTA_EN, 0);  in snvs_rtc_set_alarm()
187 	regmap_write(data->regmap, data->offset + SNVS_LPTAR, time);  in snvs_rtc_set_alarm()
190 	regmap_write(data->regmap, data->offset + SNVS_LPSR, SNVS_LPSR_LPTA);  in snvs_rtc_set_alarm()
206 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_irq_handler()  local
210 	regmap_read(data->regmap, data->offset + SNVS_LPSR, &lpsr);  in snvs_rtc_irq_handler()
218 		rtc_update_irq(data->rtc, 1, events);  in snvs_rtc_irq_handler()
222 	regmap_write(data->regmap, data->offset + SNVS_LPSR, lpsr);  in snvs_rtc_irq_handler()
235 	struct snvs_rtc_data *data;  in snvs_rtc_probe()  local
240 	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);  in snvs_rtc_probe()
241 	if (!data)  in snvs_rtc_probe()
244 	data->regmap = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, "regmap");  in snvs_rtc_probe()
246 	if (IS_ERR(data->regmap)) {  in snvs_rtc_probe()
254 		data->regmap = devm_regmap_init_mmio(&pdev->dev, mmio, &snvs_rtc_config);  in snvs_rtc_probe()
256 		data->offset = SNVS_LPREGISTER_OFFSET;  in snvs_rtc_probe()
257 		of_property_read_u32(pdev->dev.of_node, "offset", &data->offset);  in snvs_rtc_probe()
260 	if (!data->regmap) {  in snvs_rtc_probe()
265 	data->irq = platform_get_irq(pdev, 0);  in snvs_rtc_probe()
266 	if (data->irq < 0)  in snvs_rtc_probe()
267 		return data->irq;  in snvs_rtc_probe()
269 	data->clk = devm_clk_get(&pdev->dev, "snvs-rtc");  in snvs_rtc_probe()
270 	if (IS_ERR(data->clk)) {  in snvs_rtc_probe()
271 		data->clk = NULL;  in snvs_rtc_probe()
273 		ret = clk_prepare_enable(data->clk);  in snvs_rtc_probe()
281 	platform_set_drvdata(pdev, data);  in snvs_rtc_probe()
284 	regmap_write(data->regmap, data->offset + SNVS_LPPGDR, SNVS_LPPGDR_INIT);  in snvs_rtc_probe()
287 	regmap_write(data->regmap, data->offset + SNVS_LPSR, 0xffffffff);  in snvs_rtc_probe()
290 	snvs_rtc_enable(data, true);  in snvs_rtc_probe()
294 	ret = devm_request_irq(&pdev->dev, data->irq, snvs_rtc_irq_handler,  in snvs_rtc_probe()
298 			data->irq, ret);  in snvs_rtc_probe()
302 	data->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,  in snvs_rtc_probe()
304 	if (IS_ERR(data->rtc)) {  in snvs_rtc_probe()
305 		ret = PTR_ERR(data->rtc);  in snvs_rtc_probe()
313 	if (data->clk)  in snvs_rtc_probe()
314 		clk_disable_unprepare(data->clk);  in snvs_rtc_probe()
322 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_suspend()  local
325 		enable_irq_wake(data->irq);  in snvs_rtc_suspend()
332 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_suspend_noirq()  local
334 	if (data->clk)  in snvs_rtc_suspend_noirq()
335 		clk_disable_unprepare(data->clk);  in snvs_rtc_suspend_noirq()
342 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_resume()  local
345 		return disable_irq_wake(data->irq);  in snvs_rtc_resume()
352 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_resume_noirq()  local
354 	if (data->clk)  in snvs_rtc_resume_noirq()
355 		return clk_prepare_enable(data->clk);  in snvs_rtc_resume_noirq()