rtc-rv5c386a/src/rtc.c

302 static void get_rtc_time(struct rtc_time *rtc_tm)
314 	rtc_tm->tm_sec  = i2c_inb(I2C_ACK);
315 	rtc_tm->tm_min  = i2c_inb(I2C_ACK);
316 	rtc_tm->tm_hour = i2c_inb(I2C_ACK);
317 	rtc_tm->tm_wday = i2c_inb(I2C_ACK);
318 	rtc_tm->tm_mday = i2c_inb(I2C_ACK);
319 	rtc_tm->tm_mon  = i2c_inb(I2C_ACK);
320 	rtc_tm->tm_year = i2c_inb(I2C_NAK);
329 	if (rtc_tm->tm_mon & RTC_Y2K_MASK) {
330 		rtc_tm->tm_mon &= ~RTC_Y2K_MASK;
331 		rtc_tm->tm_year += 0x100;
334 	rtc_tm->tm_sec  = from_bcd(rtc_tm->tm_sec);
335 	rtc_tm->tm_min  = from_bcd(rtc_tm->tm_min);
336 	rtc_tm->tm_hour = from_bcd(rtc_tm->tm_hour);
337 	rtc_tm->tm_mday = from_bcd(rtc_tm->tm_mday);
338 	rtc_tm->tm_mon  = from_bcd(rtc_tm->tm_mon) - 1;
339 	rtc_tm->tm_year = from_bcd(rtc_tm->tm_year);
341 	rtc_tm->tm_isdst = -1; /* DST not known */
344 static void set_rtc_time(struct rtc_time *rtc_tm)
346 	rtc_tm->tm_sec  = to_bcd(rtc_tm->tm_sec);
347 	rtc_tm->tm_min  = to_bcd(rtc_tm->tm_min);
348 	rtc_tm->tm_hour = to_bcd(rtc_tm->tm_hour);
349 	rtc_tm->tm_mday = to_bcd(rtc_tm->tm_mday);
350 	rtc_tm->tm_mon  = to_bcd(rtc_tm->tm_mon + 1);
351 	rtc_tm->tm_year = to_bcd(rtc_tm->tm_year);
353 	if (rtc_tm->tm_year >= 0x100) {
354 		rtc_tm->tm_year -= 0x100;
355 		rtc_tm->tm_mon |= RTC_Y2K_MASK;
362 	i2c_outb(rtc_tm->tm_sec);
363 	i2c_outb(rtc_tm->tm_min);
364 	i2c_outb(rtc_tm->tm_hour);
365 	i2c_outb(rtc_tm->tm_wday);
366 	i2c_outb(rtc_tm->tm_mday);
367 	i2c_outb(rtc_tm->tm_mon);
368 	i2c_outb(rtc_tm->tm_year);
376 	struct rtc_time rtc_tm;
401 	rtc_tm.tm_year  = simple_strtoul(p, &p, 10);
404 	rtc_tm.tm_mon = simple_strtoul(p, &p, 10) - 1;
407 	rtc_tm.tm_mday = simple_strtoul(p, &p, 10);
410 	rtc_tm.tm_wday = simple_strtoul(p, &p, 10);
413 	rtc_tm.tm_hour = simple_strtoul(p, &p, 10);
416 	rtc_tm.tm_min = simple_strtoul(p, &p, 10);
419 	rtc_tm.tm_sec = simple_strtoul(p, &p, 10);
422 	rtc_tm.tm_year -= RTC_EPOCH;
424 	set_rtc_time(&rtc_tm);
470 	struct rtc_time rtc_tm;
474 			memset(&rtc_tm, 0, sizeof(struct rtc_time));
475 			get_rtc_time(&rtc_tm);
476 			if (copy_to_user((void *)arg, &rtc_tm, sizeof(rtc_tm)))
484 			if (copy_from_user(&rtc_tm, (struct rtc_time *)arg,
488 			set_rtc_time(&rtc_tm);