1 /* SPDX-License-Identifier: GPL-2.0-only */
2 
3 #ifndef _AB8500_CHARGER_H_
4 #define _AB8500_CHARGER_H_
5 
6 #include <linux/kernel.h>
7 
8 /*
9  * System control 2 register offsets.
10  * bank = 0x02
11  */
12 #define AB8500_MAIN_WDOG_CTRL_REG	0x01
13 #define AB8500_LOW_BAT_REG		0x03
14 #define AB8500_BATT_OK_REG		0x04
15 /*
16  * USB/ULPI register offsets
17  * Bank : 0x5
18  */
19 #define AB8500_USB_LINE_STAT_REG	0x80
20 #define AB8500_USB_LINE_CTRL2_REG	0x82
21 #define AB8500_USB_LINK1_STAT_REG	0x94
22 
23 /*
24  * Charger / status register offfsets
25  * Bank : 0x0B
26  */
27 #define AB8500_CH_STATUS1_REG		0x00
28 #define AB8500_CH_STATUS2_REG		0x01
29 #define AB8500_CH_USBCH_STAT1_REG	0x02
30 #define AB8500_CH_USBCH_STAT2_REG	0x03
31 #define AB8540_CH_USBCH_STAT3_REG	0x04
32 #define AB8500_CH_STAT_REG		0x05
33 
34 /*
35  * Charger / control register offfsets
36  * Bank : 0x0B
37  */
38 #define AB8500_CH_VOLT_LVL_REG		0x40
39 #define AB8500_CH_VOLT_LVL_MAX_REG	0x41  /*Only in Cut2.0*/
40 #define AB8500_CH_OPT_CRNTLVL_REG	0x42
41 #define AB8500_CH_OPT_CRNTLVL_MAX_REG	0x43  /*Only in Cut2.0*/
42 #define AB8500_CH_WD_TIMER_REG		0x50
43 #define AB8500_CHARG_WD_CTRL		0x51
44 #define AB8500_BTEMP_HIGH_TH		0x52
45 #define AB8500_LED_INDICATOR_PWM_CTRL	0x53
46 #define AB8500_LED_INDICATOR_PWM_DUTY	0x54
47 #define AB8500_BATT_OVV			0x55
48 #define AB8500_CHARGER_CTRL		0x56
49 #define AB8500_BAT_CTRL_CURRENT_SOURCE	0x60  /*Only in Cut2.0*/
50 
51 /*
52  * Charger / main control register offsets
53  * Bank : 0x0B
54  */
55 #define AB8500_MCH_CTRL1		0x80
56 #define AB8500_MCH_CTRL2		0x81
57 #define AB8500_MCH_IPT_CURLVL_REG	0x82
58 #define AB8500_CH_WD_REG		0x83
59 
60 /*
61  * Charger / USB control register offsets
62  * Bank : 0x0B
63  */
64 #define AB8500_USBCH_CTRL1_REG		0xC0
65 #define AB8500_USBCH_CTRL2_REG		0xC1
66 #define AB8500_USBCH_IPT_CRNTLVL_REG	0xC2
67 #define AB8540_USB_PP_MODE_REG		0xC5
68 #define AB8540_USB_PP_CHR_REG		0xC6
69 
70 /*
71  * Gas Gauge register offsets
72  * Bank : 0x0C
73  */
74 #define AB8500_GASG_CC_CTRL_REG		0x00
75 #define AB8500_GASG_CC_ACCU1_REG	0x01
76 #define AB8500_GASG_CC_ACCU2_REG	0x02
77 #define AB8500_GASG_CC_ACCU3_REG	0x03
78 #define AB8500_GASG_CC_ACCU4_REG	0x04
79 #define AB8500_GASG_CC_SMPL_CNTRL_REG	0x05
80 #define AB8500_GASG_CC_SMPL_CNTRH_REG	0x06
81 #define AB8500_GASG_CC_SMPL_CNVL_REG	0x07
82 #define AB8500_GASG_CC_SMPL_CNVH_REG	0x08
83 #define AB8500_GASG_CC_CNTR_AVGOFF_REG	0x09
84 #define AB8500_GASG_CC_OFFSET_REG	0x0A
85 #define AB8500_GASG_CC_NCOV_ACCU	0x10
86 #define AB8500_GASG_CC_NCOV_ACCU_CTRL	0x11
87 #define AB8500_GASG_CC_NCOV_ACCU_LOW	0x12
88 #define AB8500_GASG_CC_NCOV_ACCU_MED	0x13
89 #define AB8500_GASG_CC_NCOV_ACCU_HIGH	0x14
90 
91 /*
92  * Interrupt register offsets
93  * Bank : 0x0E
94  */
95 #define AB8500_IT_SOURCE2_REG		0x01
96 #define AB8500_IT_SOURCE21_REG		0x14
97 
98 /*
99  * RTC register offsets
100  * Bank: 0x0F
101  */
102 #define AB8500_RTC_BACKUP_CHG_REG	0x0C
103 #define AB8500_RTC_CC_CONF_REG		0x01
104 #define AB8500_RTC_CTRL_REG		0x0B
105 #define AB8500_RTC_CTRL1_REG		0x11
106 
107 /*
108  * OTP register offsets
109  * Bank : 0x15
110  */
111 #define AB8500_OTP_CONF_15		0x0E
112 
113 /* GPADC constants from AB8500 spec, UM0836 */
114 #define ADC_RESOLUTION			1024
115 #define ADC_CH_MAIN_MIN			0
116 #define ADC_CH_MAIN_MAX			20030
117 #define ADC_CH_VBUS_MIN			0
118 #define ADC_CH_VBUS_MAX			20030
119 #define ADC_CH_VBAT_MIN			2300
120 #define ADC_CH_VBAT_MAX			4800
121 #define ADC_CH_BKBAT_MIN		0
122 #define ADC_CH_BKBAT_MAX		3200
123 
124 /* Main charge i/p current */
125 #define MAIN_CH_IP_CUR_0P9A		0x80
126 #define MAIN_CH_IP_CUR_1P0A		0x90
127 #define MAIN_CH_IP_CUR_1P1A		0xA0
128 #define MAIN_CH_IP_CUR_1P2A		0xB0
129 #define MAIN_CH_IP_CUR_1P3A		0xC0
130 #define MAIN_CH_IP_CUR_1P4A		0xD0
131 #define MAIN_CH_IP_CUR_1P5A		0xE0
132 
133 /* ChVoltLevel */
134 #define CH_VOL_LVL_3P5			0x00
135 #define CH_VOL_LVL_4P0			0x14
136 #define CH_VOL_LVL_4P05			0x16
137 #define CH_VOL_LVL_4P1			0x1B
138 #define CH_VOL_LVL_4P15			0x20
139 #define CH_VOL_LVL_4P2			0x25
140 #define CH_VOL_LVL_4P6			0x4D
141 
142 /* ChOutputCurrentLevel */
143 #define CH_OP_CUR_LVL_0P1		0x00
144 #define CH_OP_CUR_LVL_0P2		0x01
145 #define CH_OP_CUR_LVL_0P3		0x02
146 #define CH_OP_CUR_LVL_0P4		0x03
147 #define CH_OP_CUR_LVL_0P5		0x04
148 #define CH_OP_CUR_LVL_0P6		0x05
149 #define CH_OP_CUR_LVL_0P7		0x06
150 #define CH_OP_CUR_LVL_0P8		0x07
151 #define CH_OP_CUR_LVL_0P9		0x08
152 #define CH_OP_CUR_LVL_1P4		0x0D
153 #define CH_OP_CUR_LVL_1P5		0x0E
154 #define CH_OP_CUR_LVL_1P6		0x0F
155 #define CH_OP_CUR_LVL_2P		0x3F
156 
157 /* BTEMP High thermal limits */
158 #define BTEMP_HIGH_TH_57_0		0x00
159 #define BTEMP_HIGH_TH_52		0x01
160 #define BTEMP_HIGH_TH_57_1		0x02
161 #define BTEMP_HIGH_TH_62		0x03
162 
163 #define LOW_BAT_3P1V			0x20
164 #define LOW_BAT_2P3V			0x00
165 #define LOW_BAT_RESET			0x01
166 #define LOW_BAT_ENABLE			0x01
167 
168 /* Backup battery constants */
169 #define BUP_ICH_SEL_50UA		0x00
170 #define BUP_ICH_SEL_150UA		0x04
171 #define BUP_ICH_SEL_300UA		0x08
172 #define BUP_ICH_SEL_700UA		0x0C
173 
174 enum bup_vch_sel {
175 	BUP_VCH_SEL_2P5V,
176 	BUP_VCH_SEL_2P6V,
177 	BUP_VCH_SEL_2P8V,
178 	BUP_VCH_SEL_3P1V,
179 	/*
180 	 * Note that the following 5 values 2.7v, 2.9v, 3.0v, 3.2v, 3.3v
181 	 * are only available on ab8540. You can't choose these 5
182 	 * voltage on ab8500/ab8505/ab9540.
183 	 */
184 	BUP_VCH_SEL_2P7V,
185 	BUP_VCH_SEL_2P9V,
186 	BUP_VCH_SEL_3P0V,
187 	BUP_VCH_SEL_3P2V,
188 	BUP_VCH_SEL_3P3V,
189 };
190 
191 #define BUP_VCH_RANGE		0x02
192 #define VBUP33_VRTCN		0x01
193 
194 /* Battery OVV constants */
195 #define BATT_OVV_ENA			0x02
196 #define BATT_OVV_TH_3P7			0x00
197 #define BATT_OVV_TH_4P75		0x01
198 
199 /* A value to indicate over voltage (microvolts) */
200 #define BATT_OVV_VALUE			4750000
201 
202 /* VBUS OVV constants */
203 #define VBUS_OVV_SELECT_MASK		0x78
204 #define VBUS_OVV_SELECT_5P6V		0x00
205 #define VBUS_OVV_SELECT_5P7V		0x08
206 #define VBUS_OVV_SELECT_5P8V		0x10
207 #define VBUS_OVV_SELECT_5P9V		0x18
208 #define VBUS_OVV_SELECT_6P0V		0x20
209 #define VBUS_OVV_SELECT_6P1V		0x28
210 #define VBUS_OVV_SELECT_6P2V		0x30
211 #define VBUS_OVV_SELECT_6P3V		0x38
212 
213 #define VBUS_AUTO_IN_CURR_LIM_ENA	0x04
214 
215 /* Fuel Gauge constants */
216 #define RESET_ACCU			0x02
217 #define READ_REQ			0x01
218 #define CC_DEEP_SLEEP_ENA		0x02
219 #define CC_PWR_UP_ENA			0x01
220 #define CC_SAMPLES_40			0x28
221 #define RD_NCONV_ACCU_REQ		0x01
222 #define CC_CALIB			0x08
223 #define CC_INTAVGOFFSET_ENA		0x10
224 #define CC_MUXOFFSET			0x80
225 #define CC_INT_CAL_N_AVG_MASK		0x60
226 #define CC_INT_CAL_SAMPLES_16		0x40
227 #define CC_INT_CAL_SAMPLES_8		0x20
228 #define CC_INT_CAL_SAMPLES_4		0x00
229 
230 /* RTC constants */
231 #define RTC_BUP_CH_ENA			0x10
232 
233 /* BatCtrl Current Source Constants */
234 #define BAT_CTRL_7U_ENA			0x01
235 #define BAT_CTRL_20U_ENA		0x02
236 #define BAT_CTRL_18U_ENA		0x01
237 #define BAT_CTRL_16U_ENA		0x02
238 #define BAT_CTRL_CMP_ENA		0x04
239 #define FORCE_BAT_CTRL_CMP_HIGH		0x08
240 #define BAT_CTRL_PULL_UP_ENA		0x10
241 
242 /* Battery type */
243 #define BATTERY_UNKNOWN			00
244 
245 /* Registers for pcut feature in ab8505 and ab9540 */
246 #define AB8505_RTC_PCUT_CTL_STATUS_REG	0x12
247 #define AB8505_RTC_PCUT_TIME_REG	0x13
248 #define AB8505_RTC_PCUT_MAX_TIME_REG	0x14
249 #define AB8505_RTC_PCUT_FLAG_TIME_REG	0x15
250 #define AB8505_RTC_PCUT_RESTART_REG	0x16
251 #define AB8505_RTC_PCUT_DEBOUNCE_REG	0x17
252 
253 /* USB Power Path constants for ab8540 */
254 #define BUS_VSYS_VOL_SELECT_MASK		0x06
255 #define BUS_VSYS_VOL_SELECT_3P6V		0x00
256 #define BUS_VSYS_VOL_SELECT_3P325V		0x02
257 #define BUS_VSYS_VOL_SELECT_3P9V		0x04
258 #define BUS_VSYS_VOL_SELECT_4P3V		0x06
259 #define BUS_POWER_PATH_MODE_ENA			0x01
260 #define BUS_PP_PRECHG_CURRENT_MASK		0x0E
261 #define BUS_POWER_PATH_PRECHG_ENA		0x01
262 
263 /* Forward declaration */
264 struct ab8500_fg;
265 
266 /**
267  * struct ab8500_fg_parameters - Fuel gauge algorithm parameters, in seconds
268  * if not specified
269  * @recovery_sleep_timer:	Time between measurements while recovering
270  * @recovery_total_time:	Total recovery time
271  * @init_timer:			Measurement interval during startup
272  * @init_discard_time:		Time we discard voltage measurement at startup
273  * @init_total_time:		Total init time during startup
274  * @high_curr_time:		Time current has to be high to go to recovery
275  * @accu_charging:		FG accumulation time while charging
276  * @accu_high_curr_ua:		FG accumulation time in high current mode
277  * @high_curr_threshold_ua:	High current threshold, in uA
278  * @lowbat_threshold_uv:	Low battery threshold, in uV
279  * @battok_falling_th_sel0	Threshold in mV for battOk signal sel0
280  *				Resolution in 50 mV step.
281  * @battok_raising_th_sel1	Threshold in mV for battOk signal sel1
282  *				Resolution in 50 mV step.
283  * @user_cap_limit		Capacity reported from user must be within this
284  *				limit to be considered as sane, in percentage
285  *				points.
286  * @maint_thres			This is the threshold where we stop reporting
287  *				battery full while in maintenance, in per cent
288  * @pcut_enable:			Enable power cut feature in ab8505
289  * @pcut_max_time:		Max time threshold
290  * @pcut_flag_time:		Flagtime threshold
291  * @pcut_max_restart:		Max number of restarts
292  * @pcut_debounce_time:		Sets battery debounce time
293  */
294 struct ab8500_fg_parameters {
295 	int recovery_sleep_timer;
296 	int recovery_total_time;
297 	int init_timer;
298 	int init_discard_time;
299 	int init_total_time;
300 	int high_curr_time;
301 	int accu_charging;
302 	int accu_high_curr;
303 	int high_curr_threshold_ua;
304 	int lowbat_threshold_uv;
305 	int battok_falling_th_sel0;
306 	int battok_raising_th_sel1;
307 	int user_cap_limit;
308 	int maint_thres;
309 	bool pcut_enable;
310 	u8 pcut_max_time;
311 	u8 pcut_flag_time;
312 	u8 pcut_max_restart;
313 	u8 pcut_debounce_time;
314 };
315 
316 /**
317  * struct ab8500_charger_maximization - struct used by the board config.
318  * @use_maxi:		Enable maximization for this battery type
319  * @maxi_chg_curr_ua:	Maximum charger current allowed in microampere
320  * @maxi_wait_cycles:	cycles to wait before setting charger current
321  * @charger_curr_step_ua: delta between two charger current settings (uA)
322  */
323 struct ab8500_maxim_parameters {
324 	bool ena_maxi;
325 	int chg_curr_ua;
326 	int wait_cycles;
327 	int charger_curr_step_ua;
328 };
329 
330 /**
331  * struct ab8500_bm_capacity_levels - ab8500 capacity level data
332  * @critical:		critical capacity level in percent
333  * @low:		low capacity level in percent
334  * @normal:		normal capacity level in percent
335  * @high:		high capacity level in percent
336  * @full:		full capacity level in percent
337  */
338 struct ab8500_bm_capacity_levels {
339 	int critical;
340 	int low;
341 	int normal;
342 	int high;
343 	int full;
344 };
345 
346 /**
347  * struct ab8500_bm_charger_parameters - Charger specific parameters
348  * @usb_volt_max_uv:	maximum allowed USB charger voltage in uV
349  * @usb_curr_max_ua:	maximum allowed USB charger current in uA
350  * @ac_volt_max_uv:	maximum allowed AC charger voltage in uV
351  * @ac_curr_max_ua:	maximum allowed AC charger current in uA
352  */
353 struct ab8500_bm_charger_parameters {
354 	int usb_volt_max_uv;
355 	int usb_curr_max_ua;
356 	int ac_volt_max_uv;
357 	int ac_curr_max_ua;
358 };
359 
360 /**
361  * struct ab8500_bm_data - ab8500 battery management data
362  * @bi			battery info from device tree
363  * @temp_now		present battery temperature
364  * @temp_interval_chg	temperature measurement interval in s when charging
365  * @temp_interval_nochg	temperature measurement interval in s when not charging
366  * @main_safety_tmr_h	safety timer for main charger
367  * @usb_safety_tmr_h	safety timer for usb charger
368  * @bkup_bat_v		voltage which we charge the backup battery with
369  * @bkup_bat_i		current which we charge the backup battery with
370  * @capacity_scaling    indicates whether capacity scaling is to be used
371  * @chg_unknown_bat	flag to enable charging of unknown batteries
372  * @enable_overshoot	flag to enable VBAT overshoot control
373  * @auto_trig		flag to enable auto adc trigger
374  * @fg_res		resistance of FG resistor in 0.1mOhm
375  * @interval_charging	charge alg cycle period time when charging (sec)
376  * @interval_not_charging charge alg cycle period time when not charging (sec)
377  * @temp_hysteresis	temperature hysteresis
378  * @maxi		maximization parameters
379  * @cap_levels		capacity in percent for the different capacity levels
380  * @chg_params		charger parameters
381  * @fg_params		fuel gauge parameters
382  */
383 struct ab8500_bm_data {
384 	struct power_supply_battery_info *bi;
385 	int temp_now;
386 	int temp_interval_chg;
387 	int temp_interval_nochg;
388 	int main_safety_tmr_h;
389 	int usb_safety_tmr_h;
390 	int bkup_bat_v;
391 	int bkup_bat_i;
392 	bool capacity_scaling;
393 	bool chg_unknown_bat;
394 	bool enable_overshoot;
395 	bool auto_trig;
396 	int fg_res;
397 	int interval_charging;
398 	int interval_not_charging;
399 	int temp_hysteresis;
400 	const struct ab8500_maxim_parameters *maxi;
401 	const struct ab8500_bm_capacity_levels *cap_levels;
402 	const struct ab8500_bm_charger_parameters *chg_params;
403 	const struct ab8500_fg_parameters *fg_params;
404 };
405 
406 /* Forward declaration */
407 struct ab8500_fg;
408 
409 extern struct ab8500_bm_data ab8500_bm_data;
410 
411 void ab8500_charger_usb_state_changed(u8 bm_usb_state, u16 mA);
412 struct ab8500_fg *ab8500_fg_get(void);
413 int ab8500_fg_inst_curr_blocking(struct ab8500_fg *dev);
414 int ab8500_fg_inst_curr_start(struct ab8500_fg *di);
415 int ab8500_fg_inst_curr_finalize(struct ab8500_fg *di, int *res);
416 int ab8500_fg_inst_curr_started(struct ab8500_fg *di);
417 int ab8500_fg_inst_curr_done(struct ab8500_fg *di);
418 int ab8500_bm_of_probe(struct power_supply *psy,
419 		       struct ab8500_bm_data *bm);
420 void ab8500_bm_of_remove(struct power_supply *psy,
421 			 struct ab8500_bm_data *bm);
422 
423 extern struct platform_driver ab8500_fg_driver;
424 extern struct platform_driver ab8500_btemp_driver;
425 extern struct platform_driver ab8500_chargalg_driver;
426 
427 #endif /* _AB8500_CHARGER_H_ */
428