2  *  Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
79 	return readl(rtc->base + reg);  in jz4740_rtc_reg_read()
89 	} while (!(ctrl & JZ_RTC_CTRL_WRDY) && --timeout);  in jz4740_rtc_wait_write_ready()
91 	return timeout ? 0 : -EIO;  in jz4740_rtc_wait_write_ready()
103 	writel(JZ_RTC_WENR_MAGIC, rtc->base + JZ_REG_RTC_WENR);  in jz4780_rtc_enable_write()
106 		ctrl = readl(rtc->base + JZ_REG_RTC_WENR);  in jz4780_rtc_enable_write()
107 	} while (!(ctrl & JZ_RTC_WENR_WEN) && --timeout);  in jz4780_rtc_enable_write()
109 	return timeout ? 0 : -EIO;  in jz4780_rtc_enable_write()
117 	if (rtc->type >= ID_JZ4780)  in jz4740_rtc_reg_write()
122 		writel(val, rtc->base + reg);  in jz4740_rtc_reg_write()
134 	spin_lock_irqsave(&rtc->lock, flags);  in jz4740_rtc_ctrl_set_bits()
148 	spin_unlock_irqrestore(&rtc->lock, flags);  in jz4740_rtc_ctrl_set_bits()
166 	while (secs != secs2 && --timeout) {  in jz4740_rtc_read_time()
172 		return -EIO;  in jz4740_rtc_read_time()
196 	alrm->enabled = !!(ctrl & JZ_RTC_CTRL_AE);  in jz4740_rtc_read_alarm()
197 	alrm->pending = !!(ctrl & JZ_RTC_CTRL_AF);  in jz4740_rtc_read_alarm()
199 	rtc_time_to_tm(secs, &alrm->time);  in jz4740_rtc_read_alarm()
201 	return rtc_valid_tm(&alrm->time);  in jz4740_rtc_read_alarm()
210 	rtc_tm_to_time(&alrm->time, &secs);  in jz4740_rtc_set_alarm()
215 			JZ_RTC_CTRL_AE | JZ_RTC_CTRL_AF_IRQ, alrm->enabled);  in jz4740_rtc_set_alarm()
248 	rtc_update_irq(rtc->rtc, 1, events);  in jz4740_rtc_irq()
268 	clk_prepare_enable(rtc->clk);  in jz4740_rtc_power_off()
270 	rtc_rate = clk_get_rate(rtc->clk);  in jz4740_rtc_power_off()
273 	 * Set minimum wakeup pin assertion time: 100 ms.  in jz4740_rtc_power_off()
277 		(rtc->min_wakeup_pin_assert_time * rtc_rate) / 1000;  in jz4740_rtc_power_off()
286 	 * Set reset pin low-level assertion time after wakeup: 60 ms.  in jz4740_rtc_power_off()
287 	 * Range is 0 to 125 ms if RTC is clocked at 32 kHz.  in jz4740_rtc_power_off()
289 	reset_counter_ticks = (rtc->reset_pin_assert_time * rtc_rate) / 1000;  in jz4740_rtc_power_off()
302 	{ .compatible = "ingenic,jz4740-rtc", .data = (void *)ID_JZ4740 },
303 	{ .compatible = "ingenic,jz4780-rtc", .data = (void *)ID_JZ4780 },
316 			jz4740_rtc_of_match, &pdev->dev);  in jz4740_rtc_probe()
317 	struct device_node *np = pdev->dev.of_node;  in jz4740_rtc_probe()
319 	rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);  in jz4740_rtc_probe()
321 		return -ENOMEM;  in jz4740_rtc_probe()
324 		rtc->type = (enum jz4740_rtc_type)of_id->data;  in jz4740_rtc_probe()
326 		rtc->type = id->driver_data;  in jz4740_rtc_probe()
328 	rtc->irq = platform_get_irq(pdev, 0);  in jz4740_rtc_probe()
329 	if (rtc->irq < 0) {  in jz4740_rtc_probe()
330 		dev_err(&pdev->dev, "Failed to get platform irq\n");  in jz4740_rtc_probe()
331 		return -ENOENT;  in jz4740_rtc_probe()
335 	rtc->base = devm_ioremap_resource(&pdev->dev, mem);  in jz4740_rtc_probe()
336 	if (IS_ERR(rtc->base))  in jz4740_rtc_probe()
337 		return PTR_ERR(rtc->base);  in jz4740_rtc_probe()
339 	rtc->clk = devm_clk_get(&pdev->dev, "rtc");  in jz4740_rtc_probe()
340 	if (IS_ERR(rtc->clk)) {  in jz4740_rtc_probe()
341 		dev_err(&pdev->dev, "Failed to get RTC clock\n");  in jz4740_rtc_probe()
342 		return PTR_ERR(rtc->clk);  in jz4740_rtc_probe()
345 	spin_lock_init(&rtc->lock);  in jz4740_rtc_probe()
349 	device_init_wakeup(&pdev->dev, 1);  in jz4740_rtc_probe()
351 	rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,  in jz4740_rtc_probe()
353 	if (IS_ERR(rtc->rtc)) {  in jz4740_rtc_probe()
354 		ret = PTR_ERR(rtc->rtc);  in jz4740_rtc_probe()
355 		dev_err(&pdev->dev, "Failed to register rtc device: %d\n", ret);  in jz4740_rtc_probe()
359 	ret = devm_request_irq(&pdev->dev, rtc->irq, jz4740_rtc_irq, 0,  in jz4740_rtc_probe()
360 				pdev->name, rtc);  in jz4740_rtc_probe()
362 		dev_err(&pdev->dev, "Failed to request rtc irq: %d\n", ret);  in jz4740_rtc_probe()
371 			dev_err(&pdev->dev, "Could not write to RTC registers\n");  in jz4740_rtc_probe()
378 			/* Default: 60ms */  in jz4740_rtc_probe()
379 			rtc->reset_pin_assert_time = 60;  in jz4740_rtc_probe()
380 			of_property_read_u32(np, "reset-pin-assert-time-ms",  in jz4740_rtc_probe()
381 					     &rtc->reset_pin_assert_time);  in jz4740_rtc_probe()
383 			/* Default: 100ms */  in jz4740_rtc_probe()
384 			rtc->min_wakeup_pin_assert_time = 100;  in jz4740_rtc_probe()
386 					     "min-wakeup-pin-assert-time-ms",  in jz4740_rtc_probe()
387 					     &rtc->min_wakeup_pin_assert_time);  in jz4740_rtc_probe()
389 			dev_for_power_off = &pdev->dev;  in jz4740_rtc_probe()
392 			dev_warn(&pdev->dev,  in jz4740_rtc_probe()
406 		enable_irq_wake(rtc->irq);  in jz4740_rtc_suspend()
415 		disable_irq_wake(rtc->irq);  in jz4740_rtc_resume()
430 	{ "jz4740-rtc", ID_JZ4740 },
431 	{ "jz4780-rtc", ID_JZ4780 },
439 		.name  = "jz4740-rtc",
448 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
451 MODULE_ALIAS("platform:jz4740-rtc");