drivers/rtc/rtc-cadence.c

87 static void cdns_rtc_set_enabled(struct cdns_rtc *crtc, bool enabled)
91 	writel(reg, crtc->regs + CDNS_RTC_CTLR);
94 static bool cdns_rtc_get_enabled(struct cdns_rtc *crtc)
96 	return !(readl(crtc->regs + CDNS_RTC_CTLR) & CDNS_RTC_CTLR_TIME_CAL);
102 	struct cdns_rtc *crtc = dev_get_drvdata(dev);
105 	if (!(readl(crtc->regs + CDNS_RTC_EFLR) & CDNS_RTC_AEI_ALRM))
108 	rtc_update_irq(crtc->rtc_dev, 1, RTC_IRQF | RTC_AF);
128 	struct cdns_rtc *crtc = dev_get_drvdata(dev);
132 	if (!cdns_rtc_get_enabled(crtc))
135 	cdns_rtc_set_enabled(crtc, false);
137 	reg = readl(crtc->regs + CDNS_RTC_TIMR);
140 	reg = readl(crtc->regs + CDNS_RTC_CALR);
147 	cdns_rtc_set_enabled(crtc, true);
153 	struct cdns_rtc *crtc = dev_get_drvdata(dev);
159 	cdns_rtc_set_enabled(crtc, false);
171 		writel(timr, crtc->regs + CDNS_RTC_TIMR);
172 		writel(calr, crtc->regs + CDNS_RTC_CALR);
173 		stsr = readl(crtc->regs + CDNS_RTC_STSR);
181 	cdns_rtc_set_enabled(crtc, true);
187 	struct cdns_rtc *crtc = dev_get_drvdata(dev);
192 		       crtc->regs + CDNS_RTC_AENR);
193 		writel(CDNS_RTC_AEI_ALRM, crtc->regs + CDNS_RTC_IENR);
195 		writel(0, crtc->regs + CDNS_RTC_AENR);
196 		writel(CDNS_RTC_AEI_ALRM, crtc->regs + CDNS_RTC_IDISR);
204 	struct cdns_rtc *crtc = dev_get_drvdata(dev);
207 	reg = readl(crtc->regs + CDNS_RTC_TIMAR);
210 	reg = readl(crtc->regs + CDNS_RTC_CALAR);
219 	struct cdns_rtc *crtc = dev_get_drvdata(dev);
232 		writel(timar, crtc->regs + CDNS_RTC_TIMAR);
233 		writel(calar, crtc->regs + CDNS_RTC_CALAR);
234 		stsr = readl(crtc->regs + CDNS_RTC_STSR);
257 	struct cdns_rtc *crtc;
261 	crtc = devm_kzalloc(&pdev->dev, sizeof(*crtc), GFP_KERNEL);
262 	if (!crtc)
265 	crtc->regs = devm_platform_ioremap_resource(pdev, 0);
266 	if (IS_ERR(crtc->regs))
267 		return PTR_ERR(crtc->regs);
269 	crtc->irq = platform_get_irq(pdev, 0);
270 	if (crtc->irq < 0)
273 	crtc->pclk = devm_clk_get(&pdev->dev, "pclk");
274 	if (IS_ERR(crtc->pclk)) {
275 		ret = PTR_ERR(crtc->pclk);
281 	crtc->ref_clk = devm_clk_get(&pdev->dev, "ref_clk");
282 	if (IS_ERR(crtc->ref_clk)) {
283 		ret = PTR_ERR(crtc->ref_clk);
289 	crtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev);
290 	if (IS_ERR(crtc->rtc_dev))
291 		return PTR_ERR(crtc->rtc_dev);
293 	platform_set_drvdata(pdev, crtc);
295 	ret = clk_prepare_enable(crtc->pclk);
302 	ret = clk_prepare_enable(crtc->ref_clk);
309 	ref_clk_freq = clk_get_rate(crtc->ref_clk);
318 	ret = devm_request_irq(&pdev->dev, crtc->irq,
329 	crtc->rtc_dev->range_min = mktime64(1900,  1,  1,  0,  0,  0);
330 	crtc->rtc_dev->range_max = mktime64(2999, 12, 31, 23, 59, 59);
332 	crtc->rtc_dev->ops = &cdns_rtc_ops;
336 	writel(0, crtc->regs + CDNS_RTC_HMR);
337 	writel(CDNS_RTC_KRTCR_KRTC, crtc->regs + CDNS_RTC_KRTCR);
339 	ret = devm_rtc_register_device(crtc->rtc_dev);
349 	clk_disable_unprepare(crtc->ref_clk);
352 	clk_disable_unprepare(crtc->pclk);
359 	struct cdns_rtc *crtc = platform_get_drvdata(pdev);
364 	clk_disable_unprepare(crtc->pclk);
365 	clk_disable_unprepare(crtc->ref_clk);
371 	struct cdns_rtc *crtc = dev_get_drvdata(dev);
374 		enable_irq_wake(crtc->irq);
381 	struct cdns_rtc *crtc = dev_get_drvdata(dev);
384 		disable_irq_wake(crtc->irq);