10  * the RTC state. Plus we have to read the state multiple times because we're
26  * A snapshot of the RTC state, or at least the state we're
36 struct state {  struct
49  * values in 'struct state' are BCD-encoded.  argument
56  * the members of 'struct state'.
62  * Interesting bits in 'struct state'.
88 /* Populate 'state' with current RTC state. */
90 void read_state(struct state *state)  in read_state()  argument
95 	p = (uint8_t *) state;  in read_state()
96 	for (i = 0; i < sizeof(*state); ++i) {  in read_state()
135 	struct state state, state2;  in get_value()  local
136 	uint64_t *pun = (uint64_t *) &state;  in get_value()
144 	 * Read the state until we see the same state twice in a row.  in get_value()
149 		state = state2;  in get_value()
154 	 * Normalize the state; 12hr -> 24hr, BCD -> decimal.  in get_value()
159 	if ((state.status_b & STATUS_B_24HR) != 0U) {  in get_value()
162 		pm = ((state.hour & HOUR_PM) == HOUR_PM);  in get_value()
163 		state.hour &= ~HOUR_PM;  in get_value()
166 	if ((state.status_b & STATUS_B_BIN) == 0U) {  in get_value()
167 		uint8_t *cp = (uint8_t *) &state;  in get_value()
177 		state.hour = (state.hour + 12) % 24;  in get_value()
187 	epoch = hinnant(state.year + 2000, state.month, state.day);  in get_value()
189 	epoch += state.hour * 3600; /* seconds per hour */  in get_value()
190 	epoch += state.minute * 60; /* seconds per minute */  in get_value()
191 	epoch += state.second;  in get_value()