86 static int snvs_rtc_enable(struct snvs_rtc_data *data, bool enable)  in snvs_rtc_enable()  argument
92 	spin_lock_irqsave(&data->lock, flags);  in snvs_rtc_enable()
94 	lpcr = readl(data->ioaddr + SNVS_LPCR);  in snvs_rtc_enable()
99 	writel(lpcr, data->ioaddr + SNVS_LPCR);  in snvs_rtc_enable()
101 	spin_unlock_irqrestore(&data->lock, flags);  in snvs_rtc_enable()
104 		lpcr = readl(data->ioaddr + SNVS_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->ioaddr);  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 	writel(time << CNTR_TO_SECS_SH, data->ioaddr + SNVS_LPSRTCLR);  in snvs_rtc_set_time()
143 	writel(time >> (32 - CNTR_TO_SECS_SH), data->ioaddr + SNVS_LPSRTCMR);  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 	lptar = readl(data->ioaddr + SNVS_LPTAR);  in snvs_rtc_read_alarm()
159 	lpsr = readl(data->ioaddr + SNVS_LPSR);  in snvs_rtc_read_alarm()
167 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_alarm_irq_enable()  local
171 	spin_lock_irqsave(&data->lock, flags);  in snvs_rtc_alarm_irq_enable()
173 	lpcr = readl(data->ioaddr + SNVS_LPCR);  in snvs_rtc_alarm_irq_enable()
178 	writel(lpcr, data->ioaddr + SNVS_LPCR);  in snvs_rtc_alarm_irq_enable()
180 	spin_unlock_irqrestore(&data->lock, flags);  in snvs_rtc_alarm_irq_enable()
182 	rtc_write_sync_lp(data->ioaddr);  in snvs_rtc_alarm_irq_enable()
189 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_set_alarm()  local
197 	spin_lock_irqsave(&data->lock, flags);  in snvs_rtc_set_alarm()
200 	lpcr = readl(data->ioaddr + SNVS_LPCR);  in snvs_rtc_set_alarm()
202 	writel(lpcr, data->ioaddr + SNVS_LPCR);  in snvs_rtc_set_alarm()
204 	spin_unlock_irqrestore(&data->lock, flags);  in snvs_rtc_set_alarm()
206 	writel(time, data->ioaddr + SNVS_LPTAR);  in snvs_rtc_set_alarm()
209 	writel(SNVS_LPSR_LPTA, data->ioaddr + SNVS_LPSR);  in snvs_rtc_set_alarm()
225 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_irq_handler()  local
229 	lpsr = readl(data->ioaddr + SNVS_LPSR);  in snvs_rtc_irq_handler()
237 		rtc_update_irq(data->rtc, 1, events);  in snvs_rtc_irq_handler()
241 	writel(lpsr, data->ioaddr + SNVS_LPSR);  in snvs_rtc_irq_handler()
248 	struct snvs_rtc_data *data;  in snvs_rtc_probe()  local
252 	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);  in snvs_rtc_probe()
253 	if (!data)  in snvs_rtc_probe()
257 	data->ioaddr = devm_ioremap_resource(&pdev->dev, res);  in snvs_rtc_probe()
258 	if (IS_ERR(data->ioaddr))  in snvs_rtc_probe()
259 		return PTR_ERR(data->ioaddr);  in snvs_rtc_probe()
261 	data->irq = platform_get_irq(pdev, 0);  in snvs_rtc_probe()
262 	if (data->irq < 0)  in snvs_rtc_probe()
263 		return data->irq;  in snvs_rtc_probe()
265 	data->clk = devm_clk_get(&pdev->dev, "snvs-rtc");  in snvs_rtc_probe()
266 	if (IS_ERR(data->clk)) {  in snvs_rtc_probe()
267 		data->clk = NULL;  in snvs_rtc_probe()
269 		ret = clk_prepare_enable(data->clk);  in snvs_rtc_probe()
277 	platform_set_drvdata(pdev, data);  in snvs_rtc_probe()
279 	spin_lock_init(&data->lock);  in snvs_rtc_probe()
282 	writel(SNVS_LPPGDR_INIT, data->ioaddr + SNVS_LPPGDR);  in snvs_rtc_probe()
285 	writel(0xffffffff, data->ioaddr + SNVS_LPSR);  in snvs_rtc_probe()
288 	snvs_rtc_enable(data, true);  in snvs_rtc_probe()
292 	ret = devm_request_irq(&pdev->dev, data->irq, snvs_rtc_irq_handler,  in snvs_rtc_probe()
296 			data->irq, ret);  in snvs_rtc_probe()
300 	data->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,  in snvs_rtc_probe()
302 	if (IS_ERR(data->rtc)) {  in snvs_rtc_probe()
303 		ret = PTR_ERR(data->rtc);  in snvs_rtc_probe()
311 	if (data->clk)  in snvs_rtc_probe()
312 		clk_disable_unprepare(data->clk);  in snvs_rtc_probe()
320 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_suspend()  local
323 		enable_irq_wake(data->irq);  in snvs_rtc_suspend()
330 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_suspend_noirq()  local
332 	if (data->clk)  in snvs_rtc_suspend_noirq()
333 		clk_disable_unprepare(data->clk);  in snvs_rtc_suspend_noirq()
340 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_resume()  local
343 		return disable_irq_wake(data->irq);  in snvs_rtc_resume()
350 	struct snvs_rtc_data *data = dev_get_drvdata(dev);  in snvs_rtc_resume_noirq()  local
352 	if (data->clk)  in snvs_rtc_resume_noirq()
353 		return clk_prepare_enable(data->clk);  in snvs_rtc_resume_noirq()