85 static inline void spear_rtc_clear_interrupt(struct spear_rtc_config *config)  in spear_rtc_clear_interrupt()  argument
90 	spin_lock_irqsave(&config->lock, flags);  in spear_rtc_clear_interrupt()
91 	val = readl(config->ioaddr + STATUS_REG);  in spear_rtc_clear_interrupt()
93 	writel(val, config->ioaddr + STATUS_REG);  in spear_rtc_clear_interrupt()
94 	spin_unlock_irqrestore(&config->lock, flags);  in spear_rtc_clear_interrupt()
97 static inline void spear_rtc_enable_interrupt(struct spear_rtc_config *config)  in spear_rtc_enable_interrupt()  argument
101 	val = readl(config->ioaddr + CTRL_REG);  in spear_rtc_enable_interrupt()
103 		spear_rtc_clear_interrupt(config);  in spear_rtc_enable_interrupt()
105 		writel(val, config->ioaddr + CTRL_REG);  in spear_rtc_enable_interrupt()
109 static inline void spear_rtc_disable_interrupt(struct spear_rtc_config *config)  in spear_rtc_disable_interrupt()  argument
113 	val = readl(config->ioaddr + CTRL_REG);  in spear_rtc_disable_interrupt()
116 		writel(val, config->ioaddr + CTRL_REG);  in spear_rtc_disable_interrupt()
120 static inline int is_write_complete(struct spear_rtc_config *config)  in is_write_complete()  argument
125 	spin_lock_irqsave(&config->lock, flags);  in is_write_complete()
126 	if ((readl(config->ioaddr + STATUS_REG)) & STATUS_FAIL)  in is_write_complete()
128 	spin_unlock_irqrestore(&config->lock, flags);  in is_write_complete()
133 static void rtc_wait_not_busy(struct spear_rtc_config *config)  in rtc_wait_not_busy()  argument
140 		spin_lock_irqsave(&config->lock, flags);  in rtc_wait_not_busy()
141 		status = readl(config->ioaddr + STATUS_REG);  in rtc_wait_not_busy()
142 		spin_unlock_irqrestore(&config->lock, flags);  in rtc_wait_not_busy()
152 	struct spear_rtc_config *config = dev_id;  in spear_rtc_irq()  local
156 	spin_lock(&config->lock);  in spear_rtc_irq()
157 	irq_data = readl(config->ioaddr + STATUS_REG);  in spear_rtc_irq()
158 	spin_unlock(&config->lock);  in spear_rtc_irq()
161 		spear_rtc_clear_interrupt(config);  in spear_rtc_irq()
163 		rtc_update_irq(config->rtc, 1, events);  in spear_rtc_irq()
201 	struct spear_rtc_config *config = dev_get_drvdata(dev);  in spear_rtc_read_time()  local
205 	rtc_wait_not_busy(config);  in spear_rtc_read_time()
208 		time = readl(config->ioaddr + TIME_REG);  in spear_rtc_read_time()
209 		date = readl(config->ioaddr + DATE_REG);  in spear_rtc_read_time()
210 	} while (time == readl(config->ioaddr + TIME_REG));  in spear_rtc_read_time()
232 	struct spear_rtc_config *config = dev_get_drvdata(dev);  in spear_rtc_set_time()  local
237 	rtc_wait_not_busy(config);  in spear_rtc_set_time()
242 	writel(time, config->ioaddr + TIME_REG);  in spear_rtc_set_time()
243 	writel(date, config->ioaddr + DATE_REG);  in spear_rtc_set_time()
245 	return is_write_complete(config);  in spear_rtc_set_time()
258 	struct spear_rtc_config *config = dev_get_drvdata(dev);  in spear_rtc_read_alarm()  local
261 	rtc_wait_not_busy(config);  in spear_rtc_read_alarm()
263 	time = readl(config->ioaddr + ALARM_TIME_REG);  in spear_rtc_read_alarm()
264 	date = readl(config->ioaddr + ALARM_DATE_REG);  in spear_rtc_read_alarm()
273 	alm->enabled = readl(config->ioaddr + CTRL_REG) & INT_ENABLE;  in spear_rtc_read_alarm()
288 	struct spear_rtc_config *config = dev_get_drvdata(dev);  in spear_rtc_set_alarm()  local
294 	rtc_wait_not_busy(config);  in spear_rtc_set_alarm()
301 	writel(time, config->ioaddr + ALARM_TIME_REG);  in spear_rtc_set_alarm()
302 	writel(date, config->ioaddr + ALARM_DATE_REG);  in spear_rtc_set_alarm()
303 	err = is_write_complete(config);  in spear_rtc_set_alarm()
308 		spear_rtc_enable_interrupt(config);  in spear_rtc_set_alarm()
310 		spear_rtc_disable_interrupt(config);  in spear_rtc_set_alarm()
317 	struct spear_rtc_config *config = dev_get_drvdata(dev);  in spear_alarm_irq_enable()  local
320 	spear_rtc_clear_interrupt(config);  in spear_alarm_irq_enable()
325 		spear_rtc_disable_interrupt(config);  in spear_alarm_irq_enable()
329 		spear_rtc_enable_interrupt(config);  in spear_alarm_irq_enable()
349 	struct spear_rtc_config *config;  in spear_rtc_probe()  local
353 	config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL);  in spear_rtc_probe()
354 	if (!config)  in spear_rtc_probe()
357 	config->rtc = devm_rtc_allocate_device(&pdev->dev);  in spear_rtc_probe()
358 	if (IS_ERR(config->rtc))  in spear_rtc_probe()
359 		return PTR_ERR(config->rtc);  in spear_rtc_probe()
367 			config);  in spear_rtc_probe()
374 	config->ioaddr = devm_platform_ioremap_resource(pdev, 0);  in spear_rtc_probe()
375 	if (IS_ERR(config->ioaddr))  in spear_rtc_probe()
376 		return PTR_ERR(config->ioaddr);  in spear_rtc_probe()
378 	config->clk = devm_clk_get(&pdev->dev, NULL);  in spear_rtc_probe()
379 	if (IS_ERR(config->clk))  in spear_rtc_probe()
380 		return PTR_ERR(config->clk);  in spear_rtc_probe()
382 	status = clk_prepare_enable(config->clk);  in spear_rtc_probe()
386 	spin_lock_init(&config->lock);  in spear_rtc_probe()
387 	platform_set_drvdata(pdev, config);  in spear_rtc_probe()
389 	config->rtc->ops = &spear_rtc_ops;  in spear_rtc_probe()
390 	config->rtc->range_min = RTC_TIMESTAMP_BEGIN_0000;  in spear_rtc_probe()
391 	config->rtc->range_max = RTC_TIMESTAMP_END_9999;  in spear_rtc_probe()
393 	status = devm_rtc_register_device(config->rtc);  in spear_rtc_probe()
403 	clk_disable_unprepare(config->clk);  in spear_rtc_probe()
410 	struct spear_rtc_config *config = platform_get_drvdata(pdev);  in spear_rtc_remove()  local
412 	spear_rtc_disable_interrupt(config);  in spear_rtc_remove()
413 	clk_disable_unprepare(config->clk);  in spear_rtc_remove()
421 	struct spear_rtc_config *config = platform_get_drvdata(pdev);  in spear_rtc_suspend()  local
427 			config->irq_wake = 1;  in spear_rtc_suspend()
429 		spear_rtc_disable_interrupt(config);  in spear_rtc_suspend()
430 		clk_disable(config->clk);  in spear_rtc_suspend()
439 	struct spear_rtc_config *config = platform_get_drvdata(pdev);  in spear_rtc_resume()  local
445 		if (config->irq_wake) {  in spear_rtc_resume()
447 			config->irq_wake = 0;  in spear_rtc_resume()
450 		clk_enable(config->clk);  in spear_rtc_resume()
451 		spear_rtc_enable_interrupt(config);  in spear_rtc_resume()
462 	struct spear_rtc_config *config = platform_get_drvdata(pdev);  in spear_rtc_shutdown()  local
464 	spear_rtc_disable_interrupt(config);  in spear_rtc_shutdown()
465 	clk_disable(config->clk);  in spear_rtc_shutdown()