sibyte/swarm/rtc_m41t81.c

1 // SPDX-License-Identifier: GPL-2.0-or-later
29 #define M41T81REG_HR_CEB	0x80		/* century enable bit */
33 #define M41T81REG_WD_RB0	0x01		/* watchdog resolution bit 0 */
34 #define M41T81REG_WD_RB1	0x02		/* watchdog resolution bit 1 */
35 #define M41T81REG_WD_BMB0	0x04		/* watchdog multiplier bit 0 */
36 #define M41T81REG_WD_BMB1	0x08		/* watchdog multiplier bit 1 */
37 #define M41T81REG_WD_BMB2	0x10		/* watchdog multiplier bit 2 */
38 #define M41T81REG_WD_BMB3	0x20		/* watchdog multiplier bit 3 */
39 #define M41T81REG_WD_BMB4	0x40		/* watchdog multiplier bit 4 */
40 #define M41T81REG_AMO_ABE	0x20		/* alarm in "battery back-up mode" enable bit */
41 #define M41T81REG_AMO_SQWE	0x40		/* square wave enable */
42 #define M41T81REG_AMO_AFE	0x80		/* alarm flag enable flag */
50 #define M41T81REG_FLG_WDF	0x80		/* watchdog flag (read only) */
70 #define M41T81REG_WD	0x09		/* watchdog */
104 		return -1;  in m41t81_read()
126 		return -1;  in m41t81_write()
223 	/* enable chip if it is not enabled yet */  in m41t81_probe()
227 	return m41t81_read(M41T81REG_SC) != -1;  in m41t81_probe()