20 #define RTC_REG_SIZE		0x2000
21 #define RTC_OFFSET		0x1ff0
23 #define RTC_FLAGS		(RTC_OFFSET + 0)
40 #define RTC_CENTURY_MASK	0x3f
41 #define RTC_SECONDS_MASK	0x7f
42 #define RTC_DAY_MASK		0x07
45 #define RTC_WRITE		0x80
46 #define RTC_READ		0x40
49 #define RTC_STOP		0x80
52 #define RTC_FLAGS_AF		0x40
53 #define RTC_FLAGS_BLF		0x10
56 #define RTC_INTS_AE		0x80
92 	return 0;  in ds1553_rtc_set_time()
115 	writeb(0, ioaddr + RTC_CONTROL);  in ds1553_rtc_read_time()
125 	return 0;  in ds1553_rtc_read_time()
134 	writeb(pdata->alrm_mday < 0 || (pdata->irqen & RTC_UF) ?  in ds1553_rtc_update_alarm()
135 	       0x80 : bin2bcd(pdata->alrm_mday),  in ds1553_rtc_update_alarm()
137 	writeb(pdata->alrm_hour < 0 || (pdata->irqen & RTC_UF) ?  in ds1553_rtc_update_alarm()
138 	       0x80 : bin2bcd(pdata->alrm_hour),  in ds1553_rtc_update_alarm()
140 	writeb(pdata->alrm_min < 0 || (pdata->irqen & RTC_UF) ?  in ds1553_rtc_update_alarm()
141 	       0x80 : bin2bcd(pdata->alrm_min),  in ds1553_rtc_update_alarm()
143 	writeb(pdata->alrm_sec < 0 || (pdata->irqen & RTC_UF) ?  in ds1553_rtc_update_alarm()
144 	       0x80 : bin2bcd(pdata->alrm_sec),  in ds1553_rtc_update_alarm()
146 	writeb(pdata->irqen ? RTC_INTS_AE : 0, ioaddr + RTC_INTERRUPTS);  in ds1553_rtc_update_alarm()
155 	if (pdata->irq <= 0)  in ds1553_rtc_set_alarm()
164 	return 0;  in ds1553_rtc_set_alarm()
171 	if (pdata->irq <= 0)  in ds1553_rtc_read_alarm()
173 	alrm->time.tm_mday = pdata->alrm_mday < 0 ? 0 : pdata->alrm_mday;  in ds1553_rtc_read_alarm()
174 	alrm->time.tm_hour = pdata->alrm_hour < 0 ? 0 : pdata->alrm_hour;  in ds1553_rtc_read_alarm()
175 	alrm->time.tm_min = pdata->alrm_min < 0 ? 0 : pdata->alrm_min;  in ds1553_rtc_read_alarm()
176 	alrm->time.tm_sec = pdata->alrm_sec < 0 ? 0 : pdata->alrm_sec;  in ds1553_rtc_read_alarm()
177 	alrm->enabled = (pdata->irqen & RTC_AF) ? 1 : 0;  in ds1553_rtc_read_alarm()
178 	return 0;  in ds1553_rtc_read_alarm()
186 	unsigned long events = 0;  in ds1553_rtc_interrupt()
192 		if (readb(ioaddr + RTC_SECONDS_ALARM) & 0x80)  in ds1553_rtc_interrupt()
206 	if (pdata->irq <= 0)  in ds1553_rtc_alarm_irq_enable()
213 	return 0;  in ds1553_rtc_alarm_irq_enable()
234 	return 0;  in ds1553_nvram_read()
247 	return 0;  in ds1553_nvram_write()
255 	int ret = 0;  in ds1553_rtc_probe()
270 	ioaddr = devm_platform_ioremap_resource(pdev, 0);  in ds1553_rtc_probe()
274 	pdata->irq = platform_get_irq(pdev, 0);  in ds1553_rtc_probe()
303 	if (pdata->irq > 0) {  in ds1553_rtc_probe()
304 		writeb(0, ioaddr + RTC_INTERRUPTS);  in ds1553_rtc_probe()
307 				0, pdev->name, pdev) < 0) {  in ds1553_rtc_probe()
309 			pdata->irq = 0;  in ds1553_rtc_probe()
316 	return 0;  in ds1553_rtc_probe()