xref: /openbmc/linux/include/linux/mfd/lp873x.h (revision 2aec85b2)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Functions to access LP873X power management chip.
4  *
5  * Copyright (C) 2016 Texas Instruments Incorporated - https://www.ti.com/
6  */
7 
8 #ifndef __LINUX_MFD_LP873X_H
9 #define __LINUX_MFD_LP873X_H
10 
11 #include <linux/i2c.h>
12 #include <linux/regulator/driver.h>
13 #include <linux/regulator/machine.h>
14 
15 /* LP873x chip id list */
16 #define LP873X			0x00
17 
18 /* All register addresses */
19 #define LP873X_REG_DEV_REV		0X00
20 #define LP873X_REG_OTP_REV		0X01
21 #define LP873X_REG_BUCK0_CTRL_1		0X02
22 #define LP873X_REG_BUCK0_CTRL_2		0X03
23 #define LP873X_REG_BUCK1_CTRL_1		0X04
24 #define LP873X_REG_BUCK1_CTRL_2		0X05
25 #define LP873X_REG_BUCK0_VOUT		0X06
26 #define LP873X_REG_BUCK1_VOUT		0X07
27 #define LP873X_REG_LDO0_CTRL		0X08
28 #define LP873X_REG_LDO1_CTRL            0X09
29 #define LP873X_REG_LDO0_VOUT		0X0A
30 #define LP873X_REG_LDO1_VOUT		0X0B
31 #define LP873X_REG_BUCK0_DELAY		0X0C
32 #define LP873X_REG_BUCK1_DELAY		0X0D
33 #define LP873X_REG_LDO0_DELAY		0X0E
34 #define LP873X_REG_LDO1_DELAY		0X0F
35 #define LP873X_REG_GPO_DELAY		0X10
36 #define LP873X_REG_GPO2_DELAY		0X11
37 #define LP873X_REG_GPO_CTRL		0X12
38 #define LP873X_REG_CONFIG		0X13
39 #define LP873X_REG_PLL_CTRL		0X14
40 #define LP873X_REG_PGOOD_CTRL1		0X15
41 #define LP873X_REG_PGOOD_CTRL2		0X16
42 #define LP873X_REG_PG_FAULT		0X17
43 #define LP873X_REG_RESET		0X18
44 #define LP873X_REG_INT_TOP_1		0X19
45 #define LP873X_REG_INT_TOP_2		0X1A
46 #define LP873X_REG_INT_BUCK		0X1B
47 #define LP873X_REG_INT_LDO		0X1C
48 #define LP873X_REG_TOP_STAT		0X1D
49 #define LP873X_REG_BUCK_STAT		0X1E
50 #define LP873X_REG_LDO_STAT		0x1F
51 #define LP873X_REG_TOP_MASK_1		0x20
52 #define LP873X_REG_TOP_MASK_2		0x21
53 #define LP873X_REG_BUCK_MASK		0x22
54 #define LP873X_REG_LDO_MASK		0x23
55 #define LP873X_REG_SEL_I_LOAD		0x24
56 #define LP873X_REG_I_LOAD_2		0x25
57 #define LP873X_REG_I_LOAD_1		0x26
58 
59 #define LP873X_REG_MAX			LP873X_REG_I_LOAD_1
60 
61 /* Register field definitions */
62 #define LP873X_DEV_REV_DEV_ID			0xC0
63 #define LP873X_DEV_REV_ALL_LAYER		0x30
64 #define LP873X_DEV_REV_METAL_LAYER		0x0F
65 
66 #define LP873X_OTP_REV_OTP_ID			0xFF
67 
68 #define LP873X_BUCK0_CTRL_1_BUCK0_FPWM		BIT(3)
69 #define LP873X_BUCK0_CTRL_1_BUCK0_RDIS_EN	BIT(2)
70 #define LP873X_BUCK0_CTRL_1_BUCK0_EN_PIN_CTRL	BIT(1)
71 #define LP873X_BUCK0_CTRL_1_BUCK0_EN		BIT(0)
72 
73 #define LP873X_BUCK0_CTRL_2_BUCK0_ILIM		0x38
74 #define LP873X_BUCK0_CTRL_2_BUCK0_SLEW_RATE	0x07
75 
76 #define LP873X_BUCK1_CTRL_1_BUCK1_FPWM		BIT(3)
77 #define LP873X_BUCK1_CTRL_1_BUCK1_RDIS_EN	BIT(2)
78 #define LP873X_BUCK1_CTRL_1_BUCK1_EN_PIN_CTRL	BIT(1)
79 #define LP873X_BUCK1_CTRL_1_BUCK1_EN		BIT(0)
80 
81 #define LP873X_BUCK1_CTRL_2_BUCK1_ILIM		0x38
82 #define LP873X_BUCK1_CTRL_2_BUCK1_SLEW_RATE	0x07
83 
84 #define LP873X_BUCK0_VOUT_BUCK0_VSET		0xFF
85 
86 #define LP873X_BUCK1_VOUT_BUCK1_VSET		0xFF
87 
88 #define LP873X_LDO0_CTRL_LDO0_RDIS_EN		BIT(2)
89 #define LP873X_LDO0_CTRL_LDO0_EN_PIN_CTRL	BIT(1)
90 #define LP873X_LDO0_CTRL_LDO0_EN		BIT(0)
91 
92 #define LP873X_LDO1_CTRL_LDO1_RDIS_EN		BIT(2)
93 #define LP873X_LDO1_CTRL_LDO1_EN_PIN_CTRL	BIT(1)
94 #define LP873X_LDO1_CTRL_LDO1_EN		BIT(0)
95 
96 #define LP873X_LDO0_VOUT_LDO0_VSET		0x1F
97 
98 #define LP873X_LDO1_VOUT_LDO1_VSET		0x1F
99 
100 #define LP873X_BUCK0_DELAY_BUCK0_SD_DELAY	0xF0
101 #define LP873X_BUCK0_DELAY_BUCK0_SU_DELAY	0x0F
102 
103 #define LP873X_BUCK1_DELAY_BUCK1_SD_DELAY	0xF0
104 #define LP873X_BUCK1_DELAY_BUCK1_SU_DELAY	0x0F
105 
106 #define LP873X_LDO0_DELAY_LDO0_SD_DELAY	0xF0
107 #define LP873X_LDO0_DELAY_LDO0_SU_DELAY	0x0F
108 
109 #define LP873X_LDO1_DELAY_LDO1_SD_DELAY	0xF0
110 #define LP873X_LDO1_DELAY_LDO1_SU_DELAY	0x0F
111 
112 #define LP873X_GPO_DELAY_GPO_SD_DELAY		0xF0
113 #define LP873X_GPO_DELAY_GPO_SU_DELAY		0x0F
114 
115 #define LP873X_GPO2_DELAY_GPO2_SD_DELAY	0xF0
116 #define LP873X_GPO2_DELAY_GPO2_SU_DELAY	0x0F
117 
118 #define LP873X_GPO_CTRL_GPO2_OD		BIT(6)
119 #define LP873X_GPO_CTRL_GPO2_EN_PIN_CTRL	BIT(5)
120 #define LP873X_GPO_CTRL_GPO2_EN		BIT(4)
121 #define LP873X_GPO_CTRL_GPO_OD			BIT(2)
122 #define LP873X_GPO_CTRL_GPO_EN_PIN_CTRL	BIT(1)
123 #define LP873X_GPO_CTRL_GPO_EN			BIT(0)
124 
125 #define LP873X_CONFIG_SU_DELAY_SEL		BIT(6)
126 #define LP873X_CONFIG_SD_DELAY_SEL		BIT(5)
127 #define LP873X_CONFIG_CLKIN_PIN_SEL		BIT(4)
128 #define LP873X_CONFIG_CLKIN_PD			BIT(3)
129 #define LP873X_CONFIG_EN_PD			BIT(2)
130 #define LP873X_CONFIG_TDIE_WARN_LEVEL		BIT(1)
131 #define LP873X_EN_SPREAD_SPEC			BIT(0)
132 
133 #define LP873X_PLL_CTRL_EN_PLL			BIT(6)
134 #define LP873X_EXT_CLK_FREQ			0x1F
135 
136 #define LP873X_PGOOD_CTRL1_PGOOD_POL		BIT(7)
137 #define LP873X_PGOOD_CTRL1_PGOOD_OD		BIT(6)
138 #define LP873X_PGOOD_CTRL1_PGOOD_WINDOW_LDO	BIT(5)
139 #define LP873X_PGOOD_CTRL1_PGOOD_WINDOWN_BUCK	BIT(4)
140 #define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_LDO1	BIT(3)
141 #define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_LDO0	BIT(2)
142 #define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_BUCK1	BIT(1)
143 #define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_BUCK0	BIT(0)
144 
145 #define LP873X_PGOOD_CTRL2_EN_PGOOD_TWARN	BIT(2)
146 #define LP873X_PGOOD_CTRL2_EN_PG_FAULT_GATE	BIT(1)
147 #define LP873X_PGOOD_CTRL2_PGOOD_MODE		BIT(0)
148 
149 #define LP873X_PG_FAULT_PG_FAULT_LDO1		BIT(3)
150 #define LP873X_PG_FAULT_PG_FAULT_LDO0		BIT(2)
151 #define LP873X_PG_FAULT_PG_FAULT_BUCK1		BIT(1)
152 #define LP873X_PG_FAULT_PG_FAULT_BUCK0		BIT(0)
153 
154 #define LP873X_RESET_SW_RESET			BIT(0)
155 
156 #define LP873X_INT_TOP_1_PGOOD_INT		BIT(7)
157 #define LP873X_INT_TOP_1_LDO_INT		BIT(6)
158 #define LP873X_INT_TOP_1_BUCK_INT		BIT(5)
159 #define LP873X_INT_TOP_1_SYNC_CLK_INT		BIT(4)
160 #define LP873X_INT_TOP_1_TDIE_SD_INT		BIT(3)
161 #define LP873X_INT_TOP_1_TDIE_WARN_INT		BIT(2)
162 #define LP873X_INT_TOP_1_OVP_INT		BIT(1)
163 #define LP873X_INT_TOP_1_I_MEAS_INT		BIT(0)
164 
165 #define LP873X_INT_TOP_2_RESET_REG_INT		BIT(0)
166 
167 #define LP873X_INT_BUCK_BUCK1_PG_INT		BIT(6)
168 #define LP873X_INT_BUCK_BUCK1_SC_INT		BIT(5)
169 #define LP873X_INT_BUCK_BUCK1_ILIM_INT		BIT(4)
170 #define LP873X_INT_BUCK_BUCK0_PG_INT		BIT(2)
171 #define LP873X_INT_BUCK_BUCK0_SC_INT		BIT(1)
172 #define LP873X_INT_BUCK_BUCK0_ILIM_INT		BIT(0)
173 
174 #define LP873X_INT_LDO_LDO1_PG_INT		BIT(6)
175 #define LP873X_INT_LDO_LDO1_SC_INT		BIT(5)
176 #define LP873X_INT_LDO_LDO1_ILIM_INT		BIT(4)
177 #define LP873X_INT_LDO_LDO0_PG_INT		BIT(2)
178 #define LP873X_INT_LDO_LDO0_SC_INT		BIT(1)
179 #define LP873X_INT_LDO_LDO0_ILIM_INT		BIT(0)
180 
181 #define LP873X_TOP_STAT_PGOOD_STAT		BIT(7)
182 #define LP873X_TOP_STAT_SYNC_CLK_STAT		BIT(4)
183 #define LP873X_TOP_STAT_TDIE_SD_STAT		BIT(3)
184 #define LP873X_TOP_STAT_TDIE_WARN_STAT		BIT(2)
185 #define LP873X_TOP_STAT_OVP_STAT		BIT(1)
186 
187 #define LP873X_BUCK_STAT_BUCK1_STAT		BIT(7)
188 #define LP873X_BUCK_STAT_BUCK1_PG_STAT		BIT(6)
189 #define LP873X_BUCK_STAT_BUCK1_ILIM_STAT	BIT(4)
190 #define LP873X_BUCK_STAT_BUCK0_STAT		BIT(3)
191 #define LP873X_BUCK_STAT_BUCK0_PG_STAT		BIT(2)
192 #define LP873X_BUCK_STAT_BUCK0_ILIM_STAT	BIT(0)
193 
194 #define LP873X_LDO_STAT_LDO1_STAT		BIT(7)
195 #define LP873X_LDO_STAT_LDO1_PG_STAT		BIT(6)
196 #define LP873X_LDO_STAT_LDO1_ILIM_STAT		BIT(4)
197 #define LP873X_LDO_STAT_LDO0_STAT		BIT(3)
198 #define LP873X_LDO_STAT_LDO0_PG_STAT		BIT(2)
199 #define LP873X_LDO_STAT_LDO0_ILIM_STAT		BIT(0)
200 
201 #define LP873X_TOP_MASK_1_PGOOD_INT_MASK	BIT(7)
202 #define LP873X_TOP_MASK_1_SYNC_CLK_MASK	BIT(4)
203 #define LP873X_TOP_MASK_1_TDIE_WARN_MASK	BIT(2)
204 #define LP873X_TOP_MASK_1_I_MEAS_MASK		BIT(0)
205 
206 #define LP873X_TOP_MASK_2_RESET_REG_MASK	BIT(0)
207 
208 #define LP873X_BUCK_MASK_BUCK1_PGF_MASK	BIT(7)
209 #define LP873X_BUCK_MASK_BUCK1_PGR_MASK	BIT(6)
210 #define LP873X_BUCK_MASK_BUCK1_ILIM_MASK	BIT(4)
211 #define LP873X_BUCK_MASK_BUCK0_PGF_MASK	BIT(3)
212 #define LP873X_BUCK_MASK_BUCK0_PGR_MASK	BIT(2)
213 #define LP873X_BUCK_MASK_BUCK0_ILIM_MASK	BIT(0)
214 
215 #define LP873X_LDO_MASK_LDO1_PGF_MASK		BIT(7)
216 #define LP873X_LDO_MASK_LDO1_PGR_MASK		BIT(6)
217 #define LP873X_LDO_MASK_LDO1_ILIM_MASK		BIT(4)
218 #define LP873X_LDO_MASK_LDO0_PGF_MASK		BIT(3)
219 #define LP873X_LDO_MASK_LDO0_PGR_MASK		BIT(2)
220 #define LP873X_LDO_MASK_LDO0_ILIM_MASK		BIT(0)
221 
222 #define LP873X_SEL_I_LOAD_CURRENT_BUCK_SELECT	BIT(0)
223 
224 #define LP873X_I_LOAD_2_BUCK_LOAD_CURRENT	BIT(0)
225 
226 #define LP873X_I_LOAD_1_BUCK_LOAD_CURRENT	0xFF
227 
228 #define LP873X_MAX_REG_ID		LP873X_LDO_1
229 
230 /* Number of step-down converters available */
231 #define LP873X_NUM_BUCK		2
232 /* Number of LDO voltage regulators available */
233 #define LP873X_NUM_LDO		2
234 /* Number of total regulators available */
235 #define LP873X_NUM_REGULATOR		(LP873X_NUM_BUCK + LP873X_NUM_LDO)
236 
237 enum lp873x_regulator_id {
238 	/* BUCK's */
239 	LP873X_BUCK_0,
240 	LP873X_BUCK_1,
241 	/* LDOs */
242 	LP873X_LDO_0,
243 	LP873X_LDO_1,
244 };
245 
246 /**
247  * struct lp873x - state holder for the lp873x driver
248  * @dev: struct device pointer for MFD device
249  * @rev: revision of the lp873x
250  * @lock: lock guarding the data structure
251  * @regmap: register map of the lp873x PMIC
252  *
253  * Device data may be used to access the LP873X chip
254  */
255 struct lp873x {
256 	struct device *dev;
257 	u8 rev;
258 	struct regmap *regmap;
259 };
260 #endif /* __LINUX_MFD_LP873X_H */
261