1 /*
2  * Dallas Semiconductors 1603 RTC driver
3  *
4  * Brian Murphy <brian@murphy.dk>
5  *
6  */
7 #ifndef __DS1603_H
8 #define __DS1603_H
9 
10 struct ds_defs {
11 	volatile u32 *reg;
12 	volatile u32 *data_reg;
13 	u32 rst;
14 	u32 clk;
15 	u32 data;
16 	u32 data_read_shift;
17 	char data_reversed;
18 	u32 huge_delay;
19 };
20 
21 extern struct ds_defs *ds1603;
22 
23 unsigned long ds1603_read(void);
24 int ds1603_set(unsigned long);
25 void ds1603_set_trimmer(unsigned int);
26 void ds1603_enable(void);
27 void ds1603_disable(void);
28 void ds1603_init(struct ds_defs *);
29 
30 #define TRIMMER_DEFAULT	3
31 #define TRIMMER_DISABLE_RTC 0
32 
33 #endif
34