22 #define ABX8XX_REG_HTH		0x00
23 #define ABX8XX_REG_SC		0x01
24 #define ABX8XX_REG_MN		0x02
25 #define ABX8XX_REG_HR		0x03
26 #define ABX8XX_REG_DA		0x04
27 #define ABX8XX_REG_MO		0x05
28 #define ABX8XX_REG_YR		0x06
29 #define ABX8XX_REG_WD		0x07
31 #define ABX8XX_REG_AHTH		0x08
32 #define ABX8XX_REG_ASC		0x09
33 #define ABX8XX_REG_AMN		0x0a
34 #define ABX8XX_REG_AHR		0x0b
35 #define ABX8XX_REG_ADA		0x0c
36 #define ABX8XX_REG_AMO		0x0d
37 #define ABX8XX_REG_AWD		0x0e
39 #define ABX8XX_REG_STATUS	0x0f
44 #define ABX8XX_REG_CTRL1	0x10
45 #define ABX8XX_CTRL_WRITE	BIT(0)
49 #define ABX8XX_REG_CTRL2	0x11
52 #define ABX8XX_REG_IRQ		0x12
54 #define ABX8XX_IRQ_IM_1_4	(0x3 << 5)
56 #define ABX8XX_REG_CD_TIMER_CTL	0x18
58 #define ABX8XX_REG_OSC		0x1c
66 #define ABX8XX_REG_OSS		0x1d
70 #define ABX8XX_REG_WDT		0x1b
72 #define ABX8XX_WDT_BMB_MASK	0x7c
75 #define ABX8XX_WDT_WRB_MASK	0x03
76 #define ABX8XX_WDT_WRB_1HZ	0x02
78 #define ABX8XX_REG_CFG_KEY	0x1f
79 #define ABX8XX_CFG_KEY_OSC	0xa1
80 #define ABX8XX_CFG_KEY_MISC	0x9d
82 #define ABX8XX_REG_ID0		0x28
84 #define ABX8XX_REG_OUT_CTRL	0x30
87 #define ABX8XX_REG_TRICKLE	0x20
88 #define ABX8XX_TRICKLE_CHARGE_ENABLE	0xa0
89 #define ABX8XX_TRICKLE_STANDARD_DIODE	0x8
90 #define ABX8XX_TRICKLE_SCHOTTKY_DIODE	0x4
92 #define ABX8XX_REG_EXTRAM	0x3f
93 #define ABX8XX_EXTRAM_XADS	GENMASK(1, 0)
95 #define ABX8XX_SRAM_BASE	0x40
96 #define ABX8XX_SRAM_WIN_SIZE	0x40
99 #define NVMEM_ADDR_LOWER	GENMASK(5, 0)
102 static u8 trickle_resistors[] = {0, 3, 6, 11};
114 	[AB0801] = {.pn = 0x0801},
115 	[AB0803] = {.pn = 0x0803},
116 	[AB0804] = {.pn = 0x0804, .has_tc = true, .has_wdog = true},
117 	[AB0805] = {.pn = 0x0805, .has_tc = true, .has_wdog = true},
118 	[AB1801] = {.pn = 0x1801},
119 	[AB1803] = {.pn = 0x1803},
120 	[AB1804] = {.pn = 0x1804, .has_tc = true, .has_wdog = true},
121 	[AB1805] = {.pn = 0x1805, .has_tc = true, .has_wdog = true},
122 	[RV1805] = {.pn = 0x1805, .has_tc = true, .has_wdog = true},
123 	[ABX80X] = {.pn = 0}
134 	if (i2c_smbus_write_byte_data(client, ABX8XX_REG_CFG_KEY, key) < 0) {  in abx80x_write_config_key()
139 	return 0;  in abx80x_write_config_key()
144 	int flags = 0;  in abx80x_is_rc_mode()
147 	if (flags < 0) {  in abx80x_is_rc_mode()
153 	return (flags & ABX8XX_OSS_OMODE) ? 1 : 0;  in abx80x_is_rc_mode()
165 	if (abx80x_write_config_key(client, ABX8XX_CFG_KEY_MISC) < 0)  in abx80x_enable_trickle_charger()
171 	if (err < 0) {  in abx80x_enable_trickle_charger()
176 	return 0;  in abx80x_enable_trickle_charger()
183 	int err, flags, rc_mode = 0;  in abx80x_rtc_read_time()
187 	if (rc_mode < 0)  in abx80x_rtc_read_time()
192 		if (flags < 0)  in abx80x_rtc_read_time()
203 	if (err < 0) {  in abx80x_rtc_read_time()
208 	tm->tm_sec = bcd2bin(buf[ABX8XX_REG_SC] & 0x7F);  in abx80x_rtc_read_time()
209 	tm->tm_min = bcd2bin(buf[ABX8XX_REG_MN] & 0x7F);  in abx80x_rtc_read_time()
210 	tm->tm_hour = bcd2bin(buf[ABX8XX_REG_HR] & 0x3F);  in abx80x_rtc_read_time()
211 	tm->tm_wday = buf[ABX8XX_REG_WD] & 0x7;  in abx80x_rtc_read_time()
212 	tm->tm_mday = bcd2bin(buf[ABX8XX_REG_DA] & 0x3F);  in abx80x_rtc_read_time()
213 	tm->tm_mon = bcd2bin(buf[ABX8XX_REG_MO] & 0x1F) - 1;  in abx80x_rtc_read_time()
216 	return 0;  in abx80x_rtc_read_time()
228 	buf[ABX8XX_REG_HTH] = 0;  in abx80x_rtc_set_time()
239 	if (err < 0) {  in abx80x_rtc_set_time()
246 	if (flags < 0)  in abx80x_rtc_set_time()
251 	if (err < 0) {  in abx80x_rtc_set_time()
256 	return 0;  in abx80x_rtc_set_time()
267 	if (status < 0)  in abx80x_handle_irq()
280 	i2c_smbus_write_byte_data(client, ABX8XX_REG_STATUS, 0);  in abx80x_handle_irq()
292 	if (client->irq <= 0)  in abx80x_read_alarm()
301 	if (irq_mask < 0)  in abx80x_read_alarm()
304 	t->time.tm_sec = bcd2bin(buf[0] & 0x7F);  in abx80x_read_alarm()
305 	t->time.tm_min = bcd2bin(buf[1] & 0x7F);  in abx80x_read_alarm()
306 	t->time.tm_hour = bcd2bin(buf[2] & 0x3F);  in abx80x_read_alarm()
307 	t->time.tm_mday = bcd2bin(buf[3] & 0x3F);  in abx80x_read_alarm()
308 	t->time.tm_mon = bcd2bin(buf[4] & 0x1F) - 1;  in abx80x_read_alarm()
309 	t->time.tm_wday = buf[5] & 0x7;  in abx80x_read_alarm()
323 	if (client->irq <= 0)  in abx80x_set_alarm()
326 	alarm[0] = 0x0;  in abx80x_set_alarm()
335 	if (err < 0) {  in abx80x_set_alarm()
348 	return 0;  in abx80x_set_alarm()
355 	int retval, flags = 0;  in abx80x_rtc_set_autocalibration()
357 	if ((autocalibration != 0) && (autocalibration != 1024) &&  in abx80x_rtc_set_autocalibration()
364 	if (flags < 0)  in abx80x_rtc_set_autocalibration()
367 	if (autocalibration == 0) {  in abx80x_rtc_set_autocalibration()
370 		/* 1024 autocalibration is 0x10 */  in abx80x_rtc_set_autocalibration()
374 		/* 512 autocalibration is 0x11 */  in abx80x_rtc_set_autocalibration()
379 	if (abx80x_write_config_key(client, ABX8XX_CFG_KEY_OSC) < 0)  in abx80x_rtc_set_autocalibration()
390 	int flags = 0, autocalibration;  in abx80x_rtc_get_autocalibration()
393 	if (flags < 0)  in abx80x_rtc_get_autocalibration()
401 		autocalibration = 0;  in abx80x_rtc_get_autocalibration()
411 	unsigned long autocalibration = 0;  in autocalibration_store()
414 	if (retval < 0) {  in autocalibration_store()
427 	int autocalibration = 0;  in autocalibration_show()
430 	if (autocalibration < 0) {  in autocalibration_show()
432 		sprintf(buf, "0\n");  in autocalibration_show()
446 	int retval, flags, rc_mode = 0;  in oscillator_store()
448 	if (strncmp(buf, "rc", 2) == 0) {  in oscillator_store()
450 	} else if (strncmp(buf, "xtal", 4) == 0) {  in oscillator_store()
451 		rc_mode = 0;  in oscillator_store()
458 	if (flags < 0)  in oscillator_store()
461 	if (rc_mode == 0)  in oscillator_store()
467 	if (abx80x_write_config_key(client, ABX8XX_CFG_KEY_OSC) < 0)  in oscillator_store()
471 	if (retval < 0) {  in oscillator_store()
482 	int rc_mode = 0;  in oscillator_show()
487 	if (rc_mode < 0) {  in oscillator_show()
534 		if (status < 0)  in abx80x_ioctl()
537 		tmp = status & ABX8XX_STATUS_BLF ? RTC_VL_BACKUP_LOW : 0;  in abx80x_ioctl()
543 		if (status < 0)  in abx80x_ioctl()
548 		tmp = i2c_smbus_write_byte_data(client, ABX8XX_REG_STATUS, 0);  in abx80x_ioctl()
549 		if (tmp < 0)  in abx80x_ioctl()
552 		return 0;  in abx80x_ioctl()
572 	int trickle_cfg = 0;  in abx80x_dt_trickle_cfg()
593 	for (i = 0; i < sizeof(trickle_resistors); i++)  in abx80x_dt_trickle_cfg()
621 	 * Writing 0 disables it.  in __abx80x_wdog_set_timeout()
629 	int err = 0;  in abx80x_wdog_set_timeout()
634 	if (err == 0)  in abx80x_wdog_set_timeout()
652 	return __abx80x_wdog_set_timeout(wdog, 0);  in abx80x_wdog_stop()
684 	return 0;  in abx80x_setup_watchdog()
716 			if (ret <= 0)  in abx80x_nvmem_xfer()
726 	return 0;  in abx80x_nvmem_xfer()
788 	if (err < 0) {  in abx80x_probe()
793 	partnumber = (buf[0] << 8) | buf[1];  in abx80x_probe()
795 	minrev = buf[2] & 0x7;  in abx80x_probe()
796 	lot = ((buf[4] & 0x80) << 2) | ((buf[6] & 0x80) << 1) | buf[3];  in abx80x_probe()
797 	uid = ((buf[4] & 0x7f) << 8) | buf[5];  in abx80x_probe()
798 	wafer = (buf[6] & 0x7c) >> 2;  in abx80x_probe()
803 	if (data < 0) {  in abx80x_probe()
812 	if (err < 0) {  in abx80x_probe()
826 		if (data < 0) {  in abx80x_probe()
834 		if (err < 0) {  in abx80x_probe()
846 		if (data < 0) {  in abx80x_probe()
856 		if (abx80x_write_config_key(client, ABX8XX_CFG_KEY_MISC) < 0)  in abx80x_probe()
861 		if (err < 0) {  in abx80x_probe()
870 		for (i = 0; abx80x_caps[i].pn; i++)  in abx80x_probe()
873 		if (abx80x_caps[i].pn == 0) {  in abx80x_probe()
890 	if (trickle_cfg > 0) {  in abx80x_probe()
924 	if (client->irq > 0) {  in abx80x_probe()
933 			client->irq = 0;  in abx80x_probe()