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e92a4047 SB |
1 | /* |
2 | * Copyright (c) 2012-2015, The Linux Foundation. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 and | |
6 | * only version 2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/delay.h> | |
16 | #include <linux/err.h> | |
17 | #include <linux/kernel.h> | |
18 | #include <linux/interrupt.h> | |
19 | #include <linux/bitops.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/of.h> | |
22 | #include <linux/of_device.h> | |
23 | #include <linux/platform_device.h> | |
24 | #include <linux/ktime.h> | |
25 | #include <linux/regulator/driver.h> | |
26 | #include <linux/regmap.h> | |
27 | #include <linux/list.h> | |
28 | ||
e2adfacd SB |
29 | /* Pin control enable input pins. */ |
30 | #define SPMI_REGULATOR_PIN_CTRL_ENABLE_NONE 0x00 | |
31 | #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN0 0x01 | |
32 | #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN1 0x02 | |
33 | #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN2 0x04 | |
34 | #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN3 0x08 | |
35 | #define SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT 0x10 | |
36 | ||
37 | /* Pin control high power mode input pins. */ | |
38 | #define SPMI_REGULATOR_PIN_CTRL_HPM_NONE 0x00 | |
39 | #define SPMI_REGULATOR_PIN_CTRL_HPM_EN0 0x01 | |
40 | #define SPMI_REGULATOR_PIN_CTRL_HPM_EN1 0x02 | |
41 | #define SPMI_REGULATOR_PIN_CTRL_HPM_EN2 0x04 | |
42 | #define SPMI_REGULATOR_PIN_CTRL_HPM_EN3 0x08 | |
43 | #define SPMI_REGULATOR_PIN_CTRL_HPM_SLEEP_B 0x10 | |
44 | #define SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT 0x20 | |
45 | ||
46 | /* | |
47 | * Used with enable parameters to specify that hardware default register values | |
48 | * should be left unaltered. | |
49 | */ | |
50 | #define SPMI_REGULATOR_USE_HW_DEFAULT 2 | |
51 | ||
52 | /* Soft start strength of a voltage switch type regulator */ | |
53 | enum spmi_vs_soft_start_str { | |
54 | SPMI_VS_SOFT_START_STR_0P05_UA = 0, | |
55 | SPMI_VS_SOFT_START_STR_0P25_UA, | |
56 | SPMI_VS_SOFT_START_STR_0P55_UA, | |
57 | SPMI_VS_SOFT_START_STR_0P75_UA, | |
58 | SPMI_VS_SOFT_START_STR_HW_DEFAULT, | |
59 | }; | |
60 | ||
61 | /** | |
62 | * struct spmi_regulator_init_data - spmi-regulator initialization data | |
63 | * @pin_ctrl_enable: Bit mask specifying which hardware pins should be | |
64 | * used to enable the regulator, if any | |
65 | * Value should be an ORing of | |
66 | * SPMI_REGULATOR_PIN_CTRL_ENABLE_* constants. If | |
67 | * the bit specified by | |
68 | * SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT is | |
69 | * set, then pin control enable hardware registers | |
70 | * will not be modified. | |
71 | * @pin_ctrl_hpm: Bit mask specifying which hardware pins should be | |
72 | * used to force the regulator into high power | |
73 | * mode, if any | |
74 | * Value should be an ORing of | |
75 | * SPMI_REGULATOR_PIN_CTRL_HPM_* constants. If | |
76 | * the bit specified by | |
77 | * SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT is | |
78 | * set, then pin control mode hardware registers | |
79 | * will not be modified. | |
80 | * @vs_soft_start_strength: This parameter sets the soft start strength for | |
81 | * voltage switch type regulators. Its value | |
82 | * should be one of SPMI_VS_SOFT_START_STR_*. If | |
83 | * its value is SPMI_VS_SOFT_START_STR_HW_DEFAULT, | |
84 | * then the soft start strength will be left at its | |
85 | * default hardware value. | |
86 | */ | |
87 | struct spmi_regulator_init_data { | |
88 | unsigned pin_ctrl_enable; | |
89 | unsigned pin_ctrl_hpm; | |
90 | enum spmi_vs_soft_start_str vs_soft_start_strength; | |
91 | }; | |
92 | ||
e92a4047 SB |
93 | /* These types correspond to unique register layouts. */ |
94 | enum spmi_regulator_logical_type { | |
95 | SPMI_REGULATOR_LOGICAL_TYPE_SMPS, | |
96 | SPMI_REGULATOR_LOGICAL_TYPE_LDO, | |
97 | SPMI_REGULATOR_LOGICAL_TYPE_VS, | |
98 | SPMI_REGULATOR_LOGICAL_TYPE_BOOST, | |
99 | SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS, | |
100 | SPMI_REGULATOR_LOGICAL_TYPE_BOOST_BYP, | |
101 | SPMI_REGULATOR_LOGICAL_TYPE_LN_LDO, | |
102 | SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS, | |
103 | SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS, | |
104 | SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO, | |
105 | }; | |
106 | ||
107 | enum spmi_regulator_type { | |
108 | SPMI_REGULATOR_TYPE_BUCK = 0x03, | |
109 | SPMI_REGULATOR_TYPE_LDO = 0x04, | |
110 | SPMI_REGULATOR_TYPE_VS = 0x05, | |
111 | SPMI_REGULATOR_TYPE_BOOST = 0x1b, | |
112 | SPMI_REGULATOR_TYPE_FTS = 0x1c, | |
113 | SPMI_REGULATOR_TYPE_BOOST_BYP = 0x1f, | |
114 | SPMI_REGULATOR_TYPE_ULT_LDO = 0x21, | |
115 | SPMI_REGULATOR_TYPE_ULT_BUCK = 0x22, | |
116 | }; | |
117 | ||
118 | enum spmi_regulator_subtype { | |
119 | SPMI_REGULATOR_SUBTYPE_GP_CTL = 0x08, | |
120 | SPMI_REGULATOR_SUBTYPE_RF_CTL = 0x09, | |
121 | SPMI_REGULATOR_SUBTYPE_N50 = 0x01, | |
122 | SPMI_REGULATOR_SUBTYPE_N150 = 0x02, | |
123 | SPMI_REGULATOR_SUBTYPE_N300 = 0x03, | |
124 | SPMI_REGULATOR_SUBTYPE_N600 = 0x04, | |
125 | SPMI_REGULATOR_SUBTYPE_N1200 = 0x05, | |
126 | SPMI_REGULATOR_SUBTYPE_N600_ST = 0x06, | |
127 | SPMI_REGULATOR_SUBTYPE_N1200_ST = 0x07, | |
128 | SPMI_REGULATOR_SUBTYPE_N900_ST = 0x14, | |
129 | SPMI_REGULATOR_SUBTYPE_N300_ST = 0x15, | |
130 | SPMI_REGULATOR_SUBTYPE_P50 = 0x08, | |
131 | SPMI_REGULATOR_SUBTYPE_P150 = 0x09, | |
132 | SPMI_REGULATOR_SUBTYPE_P300 = 0x0a, | |
133 | SPMI_REGULATOR_SUBTYPE_P600 = 0x0b, | |
134 | SPMI_REGULATOR_SUBTYPE_P1200 = 0x0c, | |
135 | SPMI_REGULATOR_SUBTYPE_LN = 0x10, | |
136 | SPMI_REGULATOR_SUBTYPE_LV_P50 = 0x28, | |
137 | SPMI_REGULATOR_SUBTYPE_LV_P150 = 0x29, | |
138 | SPMI_REGULATOR_SUBTYPE_LV_P300 = 0x2a, | |
139 | SPMI_REGULATOR_SUBTYPE_LV_P600 = 0x2b, | |
140 | SPMI_REGULATOR_SUBTYPE_LV_P1200 = 0x2c, | |
141 | SPMI_REGULATOR_SUBTYPE_LV_P450 = 0x2d, | |
142 | SPMI_REGULATOR_SUBTYPE_LV100 = 0x01, | |
143 | SPMI_REGULATOR_SUBTYPE_LV300 = 0x02, | |
144 | SPMI_REGULATOR_SUBTYPE_MV300 = 0x08, | |
145 | SPMI_REGULATOR_SUBTYPE_MV500 = 0x09, | |
146 | SPMI_REGULATOR_SUBTYPE_HDMI = 0x10, | |
147 | SPMI_REGULATOR_SUBTYPE_OTG = 0x11, | |
148 | SPMI_REGULATOR_SUBTYPE_5V_BOOST = 0x01, | |
149 | SPMI_REGULATOR_SUBTYPE_FTS_CTL = 0x08, | |
150 | SPMI_REGULATOR_SUBTYPE_FTS2p5_CTL = 0x09, | |
151 | SPMI_REGULATOR_SUBTYPE_BB_2A = 0x01, | |
152 | SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL1 = 0x0d, | |
153 | SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL2 = 0x0e, | |
154 | SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL3 = 0x0f, | |
155 | SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL4 = 0x10, | |
156 | }; | |
157 | ||
158 | enum spmi_common_regulator_registers { | |
159 | SPMI_COMMON_REG_DIG_MAJOR_REV = 0x01, | |
160 | SPMI_COMMON_REG_TYPE = 0x04, | |
161 | SPMI_COMMON_REG_SUBTYPE = 0x05, | |
162 | SPMI_COMMON_REG_VOLTAGE_RANGE = 0x40, | |
163 | SPMI_COMMON_REG_VOLTAGE_SET = 0x41, | |
164 | SPMI_COMMON_REG_MODE = 0x45, | |
165 | SPMI_COMMON_REG_ENABLE = 0x46, | |
166 | SPMI_COMMON_REG_PULL_DOWN = 0x48, | |
167 | SPMI_COMMON_REG_SOFT_START = 0x4c, | |
168 | SPMI_COMMON_REG_STEP_CTRL = 0x61, | |
169 | }; | |
170 | ||
171 | enum spmi_vs_registers { | |
172 | SPMI_VS_REG_OCP = 0x4a, | |
173 | SPMI_VS_REG_SOFT_START = 0x4c, | |
174 | }; | |
175 | ||
176 | enum spmi_boost_registers { | |
177 | SPMI_BOOST_REG_CURRENT_LIMIT = 0x4a, | |
178 | }; | |
179 | ||
180 | enum spmi_boost_byp_registers { | |
181 | SPMI_BOOST_BYP_REG_CURRENT_LIMIT = 0x4b, | |
182 | }; | |
183 | ||
184 | /* Used for indexing into ctrl_reg. These are offets from 0x40 */ | |
185 | enum spmi_common_control_register_index { | |
186 | SPMI_COMMON_IDX_VOLTAGE_RANGE = 0, | |
187 | SPMI_COMMON_IDX_VOLTAGE_SET = 1, | |
188 | SPMI_COMMON_IDX_MODE = 5, | |
189 | SPMI_COMMON_IDX_ENABLE = 6, | |
190 | }; | |
191 | ||
192 | /* Common regulator control register layout */ | |
193 | #define SPMI_COMMON_ENABLE_MASK 0x80 | |
194 | #define SPMI_COMMON_ENABLE 0x80 | |
195 | #define SPMI_COMMON_DISABLE 0x00 | |
196 | #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN3_MASK 0x08 | |
197 | #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN2_MASK 0x04 | |
198 | #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN1_MASK 0x02 | |
199 | #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN0_MASK 0x01 | |
200 | #define SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK 0x0f | |
201 | ||
202 | /* Common regulator mode register layout */ | |
203 | #define SPMI_COMMON_MODE_HPM_MASK 0x80 | |
204 | #define SPMI_COMMON_MODE_AUTO_MASK 0x40 | |
205 | #define SPMI_COMMON_MODE_BYPASS_MASK 0x20 | |
206 | #define SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK 0x10 | |
207 | #define SPMI_COMMON_MODE_FOLLOW_HW_EN3_MASK 0x08 | |
208 | #define SPMI_COMMON_MODE_FOLLOW_HW_EN2_MASK 0x04 | |
209 | #define SPMI_COMMON_MODE_FOLLOW_HW_EN1_MASK 0x02 | |
210 | #define SPMI_COMMON_MODE_FOLLOW_HW_EN0_MASK 0x01 | |
211 | #define SPMI_COMMON_MODE_FOLLOW_ALL_MASK 0x1f | |
212 | ||
213 | /* Common regulator pull down control register layout */ | |
214 | #define SPMI_COMMON_PULL_DOWN_ENABLE_MASK 0x80 | |
215 | ||
216 | /* LDO regulator current limit control register layout */ | |
217 | #define SPMI_LDO_CURRENT_LIMIT_ENABLE_MASK 0x80 | |
218 | ||
219 | /* LDO regulator soft start control register layout */ | |
220 | #define SPMI_LDO_SOFT_START_ENABLE_MASK 0x80 | |
221 | ||
222 | /* VS regulator over current protection control register layout */ | |
223 | #define SPMI_VS_OCP_OVERRIDE 0x01 | |
224 | #define SPMI_VS_OCP_NO_OVERRIDE 0x00 | |
225 | ||
226 | /* VS regulator soft start control register layout */ | |
227 | #define SPMI_VS_SOFT_START_ENABLE_MASK 0x80 | |
228 | #define SPMI_VS_SOFT_START_SEL_MASK 0x03 | |
229 | ||
230 | /* Boost regulator current limit control register layout */ | |
231 | #define SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK 0x80 | |
232 | #define SPMI_BOOST_CURRENT_LIMIT_MASK 0x07 | |
233 | ||
234 | #define SPMI_VS_OCP_DEFAULT_MAX_RETRIES 10 | |
235 | #define SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS 30 | |
236 | #define SPMI_VS_OCP_FALL_DELAY_US 90 | |
237 | #define SPMI_VS_OCP_FAULT_DELAY_US 20000 | |
238 | ||
239 | #define SPMI_FTSMPS_STEP_CTRL_STEP_MASK 0x18 | |
240 | #define SPMI_FTSMPS_STEP_CTRL_STEP_SHIFT 3 | |
241 | #define SPMI_FTSMPS_STEP_CTRL_DELAY_MASK 0x07 | |
242 | #define SPMI_FTSMPS_STEP_CTRL_DELAY_SHIFT 0 | |
243 | ||
244 | /* Clock rate in kHz of the FTSMPS regulator reference clock. */ | |
245 | #define SPMI_FTSMPS_CLOCK_RATE 19200 | |
246 | ||
247 | /* Minimum voltage stepper delay for each step. */ | |
248 | #define SPMI_FTSMPS_STEP_DELAY 8 | |
249 | ||
250 | /* | |
251 | * The ratio SPMI_FTSMPS_STEP_MARGIN_NUM/SPMI_FTSMPS_STEP_MARGIN_DEN is used to | |
252 | * adjust the step rate in order to account for oscillator variance. | |
253 | */ | |
254 | #define SPMI_FTSMPS_STEP_MARGIN_NUM 4 | |
255 | #define SPMI_FTSMPS_STEP_MARGIN_DEN 5 | |
256 | ||
257 | /* | |
258 | * This voltage in uV is returned by get_voltage functions when there is no way | |
259 | * to determine the current voltage level. It is needed because the regulator | |
260 | * framework treats a 0 uV voltage as an error. | |
261 | */ | |
262 | #define VOLTAGE_UNKNOWN 1 | |
263 | ||
264 | /* VSET value to decide the range of ULT SMPS */ | |
265 | #define ULT_SMPS_RANGE_SPLIT 0x60 | |
266 | ||
267 | /** | |
268 | * struct spmi_voltage_range - regulator set point voltage mapping description | |
269 | * @min_uV: Minimum programmable output voltage resulting from | |
270 | * set point register value 0x00 | |
271 | * @max_uV: Maximum programmable output voltage | |
272 | * @step_uV: Output voltage increase resulting from the set point | |
273 | * register value increasing by 1 | |
274 | * @set_point_min_uV: Minimum allowed voltage | |
275 | * @set_point_max_uV: Maximum allowed voltage. This may be tweaked in order | |
276 | * to pick which range should be used in the case of | |
277 | * overlapping set points. | |
278 | * @n_voltages: Number of preferred voltage set points present in this | |
279 | * range | |
280 | * @range_sel: Voltage range register value corresponding to this range | |
281 | * | |
282 | * The following relationships must be true for the values used in this struct: | |
283 | * (max_uV - min_uV) % step_uV == 0 | |
284 | * (set_point_min_uV - min_uV) % step_uV == 0* | |
285 | * (set_point_max_uV - min_uV) % step_uV == 0* | |
286 | * n_voltages = (set_point_max_uV - set_point_min_uV) / step_uV + 1 | |
287 | * | |
288 | * *Note, set_point_min_uV == set_point_max_uV == 0 is allowed in order to | |
289 | * specify that the voltage range has meaning, but is not preferred. | |
290 | */ | |
291 | struct spmi_voltage_range { | |
292 | int min_uV; | |
293 | int max_uV; | |
294 | int step_uV; | |
295 | int set_point_min_uV; | |
296 | int set_point_max_uV; | |
297 | unsigned n_voltages; | |
298 | u8 range_sel; | |
299 | }; | |
300 | ||
301 | /* | |
302 | * The ranges specified in the spmi_voltage_set_points struct must be listed | |
303 | * so that range[i].set_point_max_uV < range[i+1].set_point_min_uV. | |
304 | */ | |
305 | struct spmi_voltage_set_points { | |
306 | struct spmi_voltage_range *range; | |
307 | int count; | |
308 | unsigned n_voltages; | |
309 | }; | |
310 | ||
311 | struct spmi_regulator { | |
312 | struct regulator_desc desc; | |
313 | struct device *dev; | |
314 | struct delayed_work ocp_work; | |
315 | struct regmap *regmap; | |
316 | struct spmi_voltage_set_points *set_points; | |
317 | enum spmi_regulator_logical_type logical_type; | |
318 | int ocp_irq; | |
319 | int ocp_count; | |
320 | int ocp_max_retries; | |
321 | int ocp_retry_delay_ms; | |
322 | int hpm_min_load; | |
323 | int slew_rate; | |
324 | ktime_t vs_enable_time; | |
325 | u16 base; | |
326 | struct list_head node; | |
327 | }; | |
328 | ||
329 | struct spmi_regulator_mapping { | |
330 | enum spmi_regulator_type type; | |
331 | enum spmi_regulator_subtype subtype; | |
332 | enum spmi_regulator_logical_type logical_type; | |
333 | u32 revision_min; | |
334 | u32 revision_max; | |
335 | struct regulator_ops *ops; | |
336 | struct spmi_voltage_set_points *set_points; | |
337 | int hpm_min_load; | |
338 | }; | |
339 | ||
340 | struct spmi_regulator_data { | |
341 | const char *name; | |
342 | u16 base; | |
343 | const char *supply; | |
344 | const char *ocp; | |
345 | u16 force_type; | |
346 | }; | |
347 | ||
348 | #define SPMI_VREG(_type, _subtype, _dig_major_min, _dig_major_max, \ | |
349 | _logical_type, _ops_val, _set_points_val, _hpm_min_load) \ | |
350 | { \ | |
351 | .type = SPMI_REGULATOR_TYPE_##_type, \ | |
352 | .subtype = SPMI_REGULATOR_SUBTYPE_##_subtype, \ | |
353 | .revision_min = _dig_major_min, \ | |
354 | .revision_max = _dig_major_max, \ | |
355 | .logical_type = SPMI_REGULATOR_LOGICAL_TYPE_##_logical_type, \ | |
356 | .ops = &spmi_##_ops_val##_ops, \ | |
357 | .set_points = &_set_points_val##_set_points, \ | |
358 | .hpm_min_load = _hpm_min_load, \ | |
359 | } | |
360 | ||
361 | #define SPMI_VREG_VS(_subtype, _dig_major_min, _dig_major_max) \ | |
362 | { \ | |
363 | .type = SPMI_REGULATOR_TYPE_VS, \ | |
364 | .subtype = SPMI_REGULATOR_SUBTYPE_##_subtype, \ | |
365 | .revision_min = _dig_major_min, \ | |
366 | .revision_max = _dig_major_max, \ | |
367 | .logical_type = SPMI_REGULATOR_LOGICAL_TYPE_VS, \ | |
368 | .ops = &spmi_vs_ops, \ | |
369 | } | |
370 | ||
371 | #define SPMI_VOLTAGE_RANGE(_range_sel, _min_uV, _set_point_min_uV, \ | |
372 | _set_point_max_uV, _max_uV, _step_uV) \ | |
373 | { \ | |
374 | .min_uV = _min_uV, \ | |
375 | .max_uV = _max_uV, \ | |
376 | .set_point_min_uV = _set_point_min_uV, \ | |
377 | .set_point_max_uV = _set_point_max_uV, \ | |
378 | .step_uV = _step_uV, \ | |
379 | .range_sel = _range_sel, \ | |
380 | } | |
381 | ||
382 | #define DEFINE_SPMI_SET_POINTS(name) \ | |
383 | struct spmi_voltage_set_points name##_set_points = { \ | |
384 | .range = name##_ranges, \ | |
385 | .count = ARRAY_SIZE(name##_ranges), \ | |
386 | } | |
387 | ||
388 | /* | |
389 | * These tables contain the physically available PMIC regulator voltage setpoint | |
390 | * ranges. Where two ranges overlap in hardware, one of the ranges is trimmed | |
391 | * to ensure that the setpoints available to software are monotonically | |
392 | * increasing and unique. The set_voltage callback functions expect these | |
393 | * properties to hold. | |
394 | */ | |
395 | static struct spmi_voltage_range pldo_ranges[] = { | |
396 | SPMI_VOLTAGE_RANGE(2, 750000, 750000, 1537500, 1537500, 12500), | |
397 | SPMI_VOLTAGE_RANGE(3, 1500000, 1550000, 3075000, 3075000, 25000), | |
398 | SPMI_VOLTAGE_RANGE(4, 1750000, 3100000, 4900000, 4900000, 50000), | |
399 | }; | |
400 | ||
401 | static struct spmi_voltage_range nldo1_ranges[] = { | |
402 | SPMI_VOLTAGE_RANGE(2, 750000, 750000, 1537500, 1537500, 12500), | |
403 | }; | |
404 | ||
405 | static struct spmi_voltage_range nldo2_ranges[] = { | |
406 | SPMI_VOLTAGE_RANGE(0, 375000, 0, 0, 1537500, 12500), | |
407 | SPMI_VOLTAGE_RANGE(1, 375000, 375000, 768750, 768750, 6250), | |
408 | SPMI_VOLTAGE_RANGE(2, 750000, 775000, 1537500, 1537500, 12500), | |
409 | }; | |
410 | ||
411 | static struct spmi_voltage_range nldo3_ranges[] = { | |
412 | SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1537500, 1537500, 12500), | |
413 | SPMI_VOLTAGE_RANGE(1, 375000, 0, 0, 1537500, 12500), | |
414 | SPMI_VOLTAGE_RANGE(2, 750000, 0, 0, 1537500, 12500), | |
415 | }; | |
416 | ||
417 | static struct spmi_voltage_range ln_ldo_ranges[] = { | |
418 | SPMI_VOLTAGE_RANGE(1, 690000, 690000, 1110000, 1110000, 60000), | |
419 | SPMI_VOLTAGE_RANGE(0, 1380000, 1380000, 2220000, 2220000, 120000), | |
420 | }; | |
421 | ||
422 | static struct spmi_voltage_range smps_ranges[] = { | |
423 | SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1562500, 1562500, 12500), | |
424 | SPMI_VOLTAGE_RANGE(1, 1550000, 1575000, 3125000, 3125000, 25000), | |
425 | }; | |
426 | ||
427 | static struct spmi_voltage_range ftsmps_ranges[] = { | |
428 | SPMI_VOLTAGE_RANGE(0, 0, 350000, 1275000, 1275000, 5000), | |
429 | SPMI_VOLTAGE_RANGE(1, 0, 1280000, 2040000, 2040000, 10000), | |
430 | }; | |
431 | ||
432 | static struct spmi_voltage_range ftsmps2p5_ranges[] = { | |
433 | SPMI_VOLTAGE_RANGE(0, 80000, 350000, 1355000, 1355000, 5000), | |
434 | SPMI_VOLTAGE_RANGE(1, 160000, 1360000, 2200000, 2200000, 10000), | |
435 | }; | |
436 | ||
437 | static struct spmi_voltage_range boost_ranges[] = { | |
438 | SPMI_VOLTAGE_RANGE(0, 4000000, 4000000, 5550000, 5550000, 50000), | |
439 | }; | |
440 | ||
441 | static struct spmi_voltage_range boost_byp_ranges[] = { | |
442 | SPMI_VOLTAGE_RANGE(0, 2500000, 2500000, 5200000, 5650000, 50000), | |
443 | }; | |
444 | ||
445 | static struct spmi_voltage_range ult_lo_smps_ranges[] = { | |
446 | SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1562500, 1562500, 12500), | |
447 | SPMI_VOLTAGE_RANGE(1, 750000, 0, 0, 1525000, 25000), | |
448 | }; | |
449 | ||
450 | static struct spmi_voltage_range ult_ho_smps_ranges[] = { | |
451 | SPMI_VOLTAGE_RANGE(0, 1550000, 1550000, 2325000, 2325000, 25000), | |
452 | }; | |
453 | ||
454 | static struct spmi_voltage_range ult_nldo_ranges[] = { | |
455 | SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1537500, 1537500, 12500), | |
456 | }; | |
457 | ||
458 | static struct spmi_voltage_range ult_pldo_ranges[] = { | |
459 | SPMI_VOLTAGE_RANGE(0, 1750000, 1750000, 3337500, 3337500, 12500), | |
460 | }; | |
461 | ||
462 | static DEFINE_SPMI_SET_POINTS(pldo); | |
463 | static DEFINE_SPMI_SET_POINTS(nldo1); | |
464 | static DEFINE_SPMI_SET_POINTS(nldo2); | |
465 | static DEFINE_SPMI_SET_POINTS(nldo3); | |
466 | static DEFINE_SPMI_SET_POINTS(ln_ldo); | |
467 | static DEFINE_SPMI_SET_POINTS(smps); | |
468 | static DEFINE_SPMI_SET_POINTS(ftsmps); | |
469 | static DEFINE_SPMI_SET_POINTS(ftsmps2p5); | |
470 | static DEFINE_SPMI_SET_POINTS(boost); | |
471 | static DEFINE_SPMI_SET_POINTS(boost_byp); | |
472 | static DEFINE_SPMI_SET_POINTS(ult_lo_smps); | |
473 | static DEFINE_SPMI_SET_POINTS(ult_ho_smps); | |
474 | static DEFINE_SPMI_SET_POINTS(ult_nldo); | |
475 | static DEFINE_SPMI_SET_POINTS(ult_pldo); | |
476 | ||
477 | static inline int spmi_vreg_read(struct spmi_regulator *vreg, u16 addr, u8 *buf, | |
478 | int len) | |
479 | { | |
480 | return regmap_bulk_read(vreg->regmap, vreg->base + addr, buf, len); | |
481 | } | |
482 | ||
483 | static inline int spmi_vreg_write(struct spmi_regulator *vreg, u16 addr, | |
484 | u8 *buf, int len) | |
485 | { | |
486 | return regmap_bulk_write(vreg->regmap, vreg->base + addr, buf, len); | |
487 | } | |
488 | ||
489 | static int spmi_vreg_update_bits(struct spmi_regulator *vreg, u16 addr, u8 val, | |
490 | u8 mask) | |
491 | { | |
492 | return regmap_update_bits(vreg->regmap, vreg->base + addr, mask, val); | |
493 | } | |
494 | ||
495 | static int spmi_regulator_common_is_enabled(struct regulator_dev *rdev) | |
496 | { | |
497 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
498 | u8 reg; | |
499 | ||
500 | spmi_vreg_read(vreg, SPMI_COMMON_REG_ENABLE, ®, 1); | |
501 | ||
502 | return (reg & SPMI_COMMON_ENABLE_MASK) == SPMI_COMMON_ENABLE; | |
503 | } | |
504 | ||
505 | static int spmi_regulator_common_enable(struct regulator_dev *rdev) | |
506 | { | |
507 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
508 | ||
509 | return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE, | |
510 | SPMI_COMMON_ENABLE, SPMI_COMMON_ENABLE_MASK); | |
511 | } | |
512 | ||
513 | static int spmi_regulator_vs_enable(struct regulator_dev *rdev) | |
514 | { | |
515 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
516 | ||
517 | if (vreg->ocp_irq) { | |
518 | vreg->ocp_count = 0; | |
519 | vreg->vs_enable_time = ktime_get(); | |
520 | } | |
521 | ||
522 | return spmi_regulator_common_enable(rdev); | |
523 | } | |
524 | ||
e2adfacd SB |
525 | static int spmi_regulator_vs_ocp(struct regulator_dev *rdev) |
526 | { | |
527 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
528 | u8 reg = SPMI_VS_OCP_OVERRIDE; | |
529 | ||
530 | return spmi_vreg_write(vreg, SPMI_VS_REG_OCP, ®, 1); | |
531 | } | |
532 | ||
e92a4047 SB |
533 | static int spmi_regulator_common_disable(struct regulator_dev *rdev) |
534 | { | |
535 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
536 | ||
537 | return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE, | |
538 | SPMI_COMMON_DISABLE, SPMI_COMMON_ENABLE_MASK); | |
539 | } | |
540 | ||
541 | static int spmi_regulator_select_voltage(struct spmi_regulator *vreg, | |
542 | int min_uV, int max_uV, u8 *range_sel, u8 *voltage_sel, | |
543 | unsigned *selector) | |
544 | { | |
545 | const struct spmi_voltage_range *range; | |
546 | int uV = min_uV; | |
547 | int lim_min_uV, lim_max_uV, i, range_id, range_max_uV; | |
548 | ||
549 | /* Check if request voltage is outside of physically settable range. */ | |
550 | lim_min_uV = vreg->set_points->range[0].set_point_min_uV; | |
551 | lim_max_uV = | |
552 | vreg->set_points->range[vreg->set_points->count - 1].set_point_max_uV; | |
553 | ||
554 | if (uV < lim_min_uV && max_uV >= lim_min_uV) | |
555 | uV = lim_min_uV; | |
556 | ||
557 | if (uV < lim_min_uV || uV > lim_max_uV) { | |
558 | dev_err(vreg->dev, | |
559 | "request v=[%d, %d] is outside possible v=[%d, %d]\n", | |
560 | min_uV, max_uV, lim_min_uV, lim_max_uV); | |
561 | return -EINVAL; | |
562 | } | |
563 | ||
564 | /* Find the range which uV is inside of. */ | |
565 | for (i = vreg->set_points->count - 1; i > 0; i--) { | |
566 | range_max_uV = vreg->set_points->range[i - 1].set_point_max_uV; | |
567 | if (uV > range_max_uV && range_max_uV > 0) | |
568 | break; | |
569 | } | |
570 | ||
571 | range_id = i; | |
572 | range = &vreg->set_points->range[range_id]; | |
573 | *range_sel = range->range_sel; | |
574 | ||
575 | /* | |
576 | * Force uV to be an allowed set point by applying a ceiling function to | |
577 | * the uV value. | |
578 | */ | |
5d506a5a | 579 | *voltage_sel = DIV_ROUND_UP(uV - range->min_uV, range->step_uV); |
e92a4047 SB |
580 | uV = *voltage_sel * range->step_uV + range->min_uV; |
581 | ||
582 | if (uV > max_uV) { | |
583 | dev_err(vreg->dev, | |
584 | "request v=[%d, %d] cannot be met by any set point; " | |
585 | "next set point: %d\n", | |
586 | min_uV, max_uV, uV); | |
587 | return -EINVAL; | |
588 | } | |
589 | ||
590 | *selector = 0; | |
591 | for (i = 0; i < range_id; i++) | |
592 | *selector += vreg->set_points->range[i].n_voltages; | |
593 | *selector += (uV - range->set_point_min_uV) / range->step_uV; | |
594 | ||
595 | return 0; | |
596 | } | |
597 | ||
598 | static const struct spmi_voltage_range * | |
599 | spmi_regulator_find_range(struct spmi_regulator *vreg) | |
600 | { | |
601 | u8 range_sel; | |
602 | const struct spmi_voltage_range *range, *end; | |
603 | ||
604 | range = vreg->set_points->range; | |
605 | end = range + vreg->set_points->count; | |
606 | ||
607 | spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, &range_sel, 1); | |
608 | ||
609 | for (; range < end; range++) | |
610 | if (range->range_sel == range_sel) | |
611 | return range; | |
612 | ||
613 | return NULL; | |
614 | } | |
615 | ||
616 | static int spmi_regulator_select_voltage_same_range(struct spmi_regulator *vreg, | |
617 | int min_uV, int max_uV, u8 *range_sel, u8 *voltage_sel, | |
618 | unsigned *selector) | |
619 | { | |
620 | const struct spmi_voltage_range *range; | |
621 | int uV = min_uV; | |
622 | int i; | |
623 | ||
624 | range = spmi_regulator_find_range(vreg); | |
625 | if (!range) | |
626 | goto different_range; | |
627 | ||
628 | if (uV < range->min_uV && max_uV >= range->min_uV) | |
629 | uV = range->min_uV; | |
630 | ||
631 | if (uV < range->min_uV || uV > range->max_uV) { | |
632 | /* Current range doesn't support the requested voltage. */ | |
633 | goto different_range; | |
634 | } | |
635 | ||
636 | /* | |
637 | * Force uV to be an allowed set point by applying a ceiling function to | |
638 | * the uV value. | |
639 | */ | |
640 | *voltage_sel = DIV_ROUND_UP(uV - range->min_uV, range->step_uV); | |
641 | uV = *voltage_sel * range->step_uV + range->min_uV; | |
642 | ||
643 | if (uV > max_uV) { | |
644 | /* | |
645 | * No set point in the current voltage range is within the | |
646 | * requested min_uV to max_uV range. | |
647 | */ | |
648 | goto different_range; | |
649 | } | |
650 | ||
651 | *selector = 0; | |
652 | for (i = 0; i < vreg->set_points->count; i++) { | |
653 | if (uV >= vreg->set_points->range[i].set_point_min_uV | |
9b2dfee3 | 654 | && uV <= vreg->set_points->range[i].set_point_max_uV) { |
e92a4047 SB |
655 | *selector += |
656 | (uV - vreg->set_points->range[i].set_point_min_uV) | |
657 | / vreg->set_points->range[i].step_uV; | |
658 | break; | |
9b2dfee3 | 659 | } |
e92a4047 SB |
660 | |
661 | *selector += vreg->set_points->range[i].n_voltages; | |
662 | } | |
663 | ||
664 | if (*selector >= vreg->set_points->n_voltages) | |
665 | goto different_range; | |
666 | ||
667 | return 0; | |
668 | ||
669 | different_range: | |
670 | return spmi_regulator_select_voltage(vreg, min_uV, max_uV, | |
671 | range_sel, voltage_sel, selector); | |
672 | } | |
673 | ||
674 | static int spmi_regulator_common_set_voltage(struct regulator_dev *rdev, | |
675 | int min_uV, int max_uV, unsigned *selector) | |
676 | { | |
677 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
678 | int ret; | |
679 | u8 buf[2]; | |
680 | u8 range_sel, voltage_sel; | |
681 | ||
682 | /* | |
683 | * Favor staying in the current voltage range if possible. This avoids | |
684 | * voltage spikes that occur when changing the voltage range. | |
685 | */ | |
686 | ret = spmi_regulator_select_voltage_same_range(vreg, min_uV, max_uV, | |
687 | &range_sel, &voltage_sel, selector); | |
688 | if (ret) | |
689 | return ret; | |
690 | ||
691 | buf[0] = range_sel; | |
692 | buf[1] = voltage_sel; | |
693 | return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, buf, 2); | |
694 | } | |
695 | ||
696 | static int spmi_regulator_set_voltage_time_sel(struct regulator_dev *rdev, | |
697 | unsigned int old_selector, unsigned int new_selector) | |
698 | { | |
699 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
700 | const struct spmi_voltage_range *range; | |
701 | int diff_uV; | |
702 | ||
703 | range = spmi_regulator_find_range(vreg); | |
704 | if (!range) | |
705 | return -EINVAL; | |
706 | ||
707 | diff_uV = abs(new_selector - old_selector) * range->step_uV; | |
708 | ||
709 | return DIV_ROUND_UP(diff_uV, vreg->slew_rate); | |
710 | } | |
711 | ||
712 | static int spmi_regulator_common_get_voltage(struct regulator_dev *rdev) | |
713 | { | |
714 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
715 | const struct spmi_voltage_range *range; | |
716 | u8 voltage_sel; | |
717 | ||
718 | spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1); | |
719 | ||
720 | range = spmi_regulator_find_range(vreg); | |
721 | if (!range) | |
722 | return VOLTAGE_UNKNOWN; | |
723 | ||
724 | return range->step_uV * voltage_sel + range->min_uV; | |
725 | } | |
726 | ||
727 | static int spmi_regulator_single_range_set_voltage(struct regulator_dev *rdev, | |
728 | int min_uV, int max_uV, unsigned *selector) | |
729 | { | |
730 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
731 | int ret; | |
732 | u8 range_sel, sel; | |
733 | ||
734 | ret = spmi_regulator_select_voltage(vreg, min_uV, max_uV, &range_sel, | |
735 | &sel, selector); | |
736 | if (ret) { | |
737 | dev_err(vreg->dev, "could not set voltage, ret=%d\n", ret); | |
738 | return ret; | |
739 | } | |
740 | ||
741 | /* | |
742 | * Certain types of regulators do not have a range select register so | |
743 | * only voltage set register needs to be written. | |
744 | */ | |
745 | return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &sel, 1); | |
746 | } | |
747 | ||
748 | static int spmi_regulator_single_range_get_voltage(struct regulator_dev *rdev) | |
749 | { | |
750 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
751 | const struct spmi_voltage_range *range = vreg->set_points->range; | |
752 | u8 voltage_sel; | |
753 | ||
754 | spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1); | |
755 | ||
756 | return range->step_uV * voltage_sel + range->min_uV; | |
757 | } | |
758 | ||
759 | static int spmi_regulator_ult_lo_smps_set_voltage(struct regulator_dev *rdev, | |
760 | int min_uV, int max_uV, unsigned *selector) | |
761 | { | |
762 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
763 | int ret; | |
764 | u8 range_sel, voltage_sel; | |
765 | ||
766 | /* | |
767 | * Favor staying in the current voltage range if possible. This avoids | |
768 | * voltage spikes that occur when changing the voltage range. | |
769 | */ | |
770 | ret = spmi_regulator_select_voltage_same_range(vreg, min_uV, max_uV, | |
771 | &range_sel, &voltage_sel, selector); | |
772 | if (ret) | |
773 | return ret; | |
774 | ||
775 | /* | |
776 | * Calculate VSET based on range | |
777 | * In case of range 0: voltage_sel is a 7 bit value, can be written | |
778 | * witout any modification. | |
779 | * In case of range 1: voltage_sel is a 5 bit value, bits[7-5] set to | |
780 | * [011]. | |
781 | */ | |
782 | if (range_sel == 1) | |
783 | voltage_sel |= ULT_SMPS_RANGE_SPLIT; | |
784 | ||
0f94bffa | 785 | return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_VOLTAGE_SET, |
e92a4047 | 786 | voltage_sel, 0xff); |
e92a4047 SB |
787 | } |
788 | ||
789 | static int spmi_regulator_ult_lo_smps_get_voltage(struct regulator_dev *rdev) | |
790 | { | |
791 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
792 | const struct spmi_voltage_range *range; | |
793 | u8 voltage_sel; | |
794 | ||
795 | spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1); | |
796 | ||
797 | range = spmi_regulator_find_range(vreg); | |
798 | if (!range) | |
799 | return VOLTAGE_UNKNOWN; | |
800 | ||
801 | if (range->range_sel == 1) | |
802 | voltage_sel &= ~ULT_SMPS_RANGE_SPLIT; | |
803 | ||
804 | return range->step_uV * voltage_sel + range->min_uV; | |
805 | } | |
806 | ||
807 | static int spmi_regulator_common_list_voltage(struct regulator_dev *rdev, | |
808 | unsigned selector) | |
809 | { | |
810 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
811 | int uV = 0; | |
812 | int i; | |
813 | ||
814 | if (selector >= vreg->set_points->n_voltages) | |
815 | return 0; | |
816 | ||
817 | for (i = 0; i < vreg->set_points->count; i++) { | |
9b2dfee3 | 818 | if (selector < vreg->set_points->range[i].n_voltages) { |
e92a4047 SB |
819 | uV = selector * vreg->set_points->range[i].step_uV |
820 | + vreg->set_points->range[i].set_point_min_uV; | |
821 | break; | |
9b2dfee3 | 822 | } |
e92a4047 SB |
823 | |
824 | selector -= vreg->set_points->range[i].n_voltages; | |
825 | } | |
826 | ||
827 | return uV; | |
828 | } | |
829 | ||
830 | static int | |
831 | spmi_regulator_common_set_bypass(struct regulator_dev *rdev, bool enable) | |
832 | { | |
833 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
834 | u8 mask = SPMI_COMMON_MODE_BYPASS_MASK; | |
835 | u8 val = 0; | |
836 | ||
837 | if (enable) | |
838 | val = mask; | |
839 | ||
840 | return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask); | |
841 | } | |
842 | ||
843 | static int | |
844 | spmi_regulator_common_get_bypass(struct regulator_dev *rdev, bool *enable) | |
845 | { | |
846 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
847 | u8 val; | |
848 | int ret; | |
849 | ||
850 | ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &val, 1); | |
851 | *enable = val & SPMI_COMMON_MODE_BYPASS_MASK; | |
852 | ||
853 | return ret; | |
854 | } | |
855 | ||
856 | static unsigned int spmi_regulator_common_get_mode(struct regulator_dev *rdev) | |
857 | { | |
858 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
859 | u8 reg; | |
860 | ||
861 | spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, ®, 1); | |
862 | ||
863 | if (reg & SPMI_COMMON_MODE_HPM_MASK) | |
864 | return REGULATOR_MODE_NORMAL; | |
865 | ||
e2adfacd SB |
866 | if (reg & SPMI_COMMON_MODE_AUTO_MASK) |
867 | return REGULATOR_MODE_FAST; | |
868 | ||
e92a4047 SB |
869 | return REGULATOR_MODE_IDLE; |
870 | } | |
871 | ||
872 | static int | |
873 | spmi_regulator_common_set_mode(struct regulator_dev *rdev, unsigned int mode) | |
874 | { | |
875 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
e2adfacd | 876 | u8 mask = SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK; |
e92a4047 SB |
877 | u8 val = 0; |
878 | ||
879 | if (mode == REGULATOR_MODE_NORMAL) | |
e2adfacd SB |
880 | val = SPMI_COMMON_MODE_HPM_MASK; |
881 | else if (mode == REGULATOR_MODE_FAST) | |
882 | val = SPMI_COMMON_MODE_AUTO_MASK; | |
e92a4047 SB |
883 | |
884 | return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask); | |
885 | } | |
886 | ||
887 | static int | |
888 | spmi_regulator_common_set_load(struct regulator_dev *rdev, int load_uA) | |
889 | { | |
890 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
891 | unsigned int mode; | |
892 | ||
893 | if (load_uA >= vreg->hpm_min_load) | |
894 | mode = REGULATOR_MODE_NORMAL; | |
895 | else | |
896 | mode = REGULATOR_MODE_IDLE; | |
897 | ||
898 | return spmi_regulator_common_set_mode(rdev, mode); | |
899 | } | |
900 | ||
901 | static int spmi_regulator_common_set_pull_down(struct regulator_dev *rdev) | |
902 | { | |
903 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
904 | unsigned int mask = SPMI_COMMON_PULL_DOWN_ENABLE_MASK; | |
905 | ||
906 | return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_PULL_DOWN, | |
907 | mask, mask); | |
908 | } | |
909 | ||
910 | static int spmi_regulator_common_set_soft_start(struct regulator_dev *rdev) | |
911 | { | |
912 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
913 | unsigned int mask = SPMI_LDO_SOFT_START_ENABLE_MASK; | |
914 | ||
915 | return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_SOFT_START, | |
916 | mask, mask); | |
917 | } | |
918 | ||
919 | static int spmi_regulator_set_ilim(struct regulator_dev *rdev, int ilim_uA) | |
920 | { | |
921 | struct spmi_regulator *vreg = rdev_get_drvdata(rdev); | |
922 | enum spmi_regulator_logical_type type = vreg->logical_type; | |
923 | unsigned int current_reg; | |
924 | u8 reg; | |
925 | u8 mask = SPMI_BOOST_CURRENT_LIMIT_MASK | | |
926 | SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK; | |
927 | int max = (SPMI_BOOST_CURRENT_LIMIT_MASK + 1) * 500; | |
928 | ||
929 | if (type == SPMI_REGULATOR_LOGICAL_TYPE_BOOST) | |
930 | current_reg = SPMI_BOOST_REG_CURRENT_LIMIT; | |
931 | else | |
932 | current_reg = SPMI_BOOST_BYP_REG_CURRENT_LIMIT; | |
933 | ||
934 | if (ilim_uA > max || ilim_uA <= 0) | |
935 | return -EINVAL; | |
936 | ||
937 | reg = (ilim_uA - 1) / 500; | |
938 | reg |= SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK; | |
939 | ||
940 | return spmi_vreg_update_bits(vreg, current_reg, reg, mask); | |
941 | } | |
942 | ||
943 | static int spmi_regulator_vs_clear_ocp(struct spmi_regulator *vreg) | |
944 | { | |
945 | int ret; | |
946 | ||
947 | ret = spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE, | |
948 | SPMI_COMMON_DISABLE, SPMI_COMMON_ENABLE_MASK); | |
949 | ||
950 | vreg->vs_enable_time = ktime_get(); | |
951 | ||
952 | ret = spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE, | |
953 | SPMI_COMMON_ENABLE, SPMI_COMMON_ENABLE_MASK); | |
954 | ||
955 | return ret; | |
956 | } | |
957 | ||
958 | static void spmi_regulator_vs_ocp_work(struct work_struct *work) | |
959 | { | |
960 | struct delayed_work *dwork = to_delayed_work(work); | |
961 | struct spmi_regulator *vreg | |
962 | = container_of(dwork, struct spmi_regulator, ocp_work); | |
963 | ||
964 | spmi_regulator_vs_clear_ocp(vreg); | |
965 | } | |
966 | ||
967 | static irqreturn_t spmi_regulator_vs_ocp_isr(int irq, void *data) | |
968 | { | |
969 | struct spmi_regulator *vreg = data; | |
970 | ktime_t ocp_irq_time; | |
971 | s64 ocp_trigger_delay_us; | |
972 | ||
973 | ocp_irq_time = ktime_get(); | |
974 | ocp_trigger_delay_us = ktime_us_delta(ocp_irq_time, | |
975 | vreg->vs_enable_time); | |
976 | ||
977 | /* | |
978 | * Reset the OCP count if there is a large delay between switch enable | |
979 | * and when OCP triggers. This is indicative of a hotplug event as | |
980 | * opposed to a fault. | |
981 | */ | |
982 | if (ocp_trigger_delay_us > SPMI_VS_OCP_FAULT_DELAY_US) | |
983 | vreg->ocp_count = 0; | |
984 | ||
985 | /* Wait for switch output to settle back to 0 V after OCP triggered. */ | |
986 | udelay(SPMI_VS_OCP_FALL_DELAY_US); | |
987 | ||
988 | vreg->ocp_count++; | |
989 | ||
990 | if (vreg->ocp_count == 1) { | |
991 | /* Immediately clear the over current condition. */ | |
992 | spmi_regulator_vs_clear_ocp(vreg); | |
993 | } else if (vreg->ocp_count <= vreg->ocp_max_retries) { | |
994 | /* Schedule the over current clear task to run later. */ | |
995 | schedule_delayed_work(&vreg->ocp_work, | |
996 | msecs_to_jiffies(vreg->ocp_retry_delay_ms) + 1); | |
997 | } else { | |
998 | dev_err(vreg->dev, | |
999 | "OCP triggered %d times; no further retries\n", | |
1000 | vreg->ocp_count); | |
1001 | } | |
1002 | ||
1003 | return IRQ_HANDLED; | |
1004 | } | |
1005 | ||
1006 | static struct regulator_ops spmi_smps_ops = { | |
1007 | .enable = spmi_regulator_common_enable, | |
1008 | .disable = spmi_regulator_common_disable, | |
1009 | .is_enabled = spmi_regulator_common_is_enabled, | |
1010 | .set_voltage = spmi_regulator_common_set_voltage, | |
1011 | .get_voltage = spmi_regulator_common_get_voltage, | |
1012 | .list_voltage = spmi_regulator_common_list_voltage, | |
1013 | .set_mode = spmi_regulator_common_set_mode, | |
1014 | .get_mode = spmi_regulator_common_get_mode, | |
1015 | .set_load = spmi_regulator_common_set_load, | |
1016 | .set_pull_down = spmi_regulator_common_set_pull_down, | |
1017 | }; | |
1018 | ||
1019 | static struct regulator_ops spmi_ldo_ops = { | |
1020 | .enable = spmi_regulator_common_enable, | |
1021 | .disable = spmi_regulator_common_disable, | |
1022 | .is_enabled = spmi_regulator_common_is_enabled, | |
1023 | .set_voltage = spmi_regulator_common_set_voltage, | |
1024 | .get_voltage = spmi_regulator_common_get_voltage, | |
1025 | .list_voltage = spmi_regulator_common_list_voltage, | |
1026 | .set_mode = spmi_regulator_common_set_mode, | |
1027 | .get_mode = spmi_regulator_common_get_mode, | |
1028 | .set_load = spmi_regulator_common_set_load, | |
1029 | .set_bypass = spmi_regulator_common_set_bypass, | |
1030 | .get_bypass = spmi_regulator_common_get_bypass, | |
1031 | .set_pull_down = spmi_regulator_common_set_pull_down, | |
1032 | .set_soft_start = spmi_regulator_common_set_soft_start, | |
1033 | }; | |
1034 | ||
1035 | static struct regulator_ops spmi_ln_ldo_ops = { | |
1036 | .enable = spmi_regulator_common_enable, | |
1037 | .disable = spmi_regulator_common_disable, | |
1038 | .is_enabled = spmi_regulator_common_is_enabled, | |
1039 | .set_voltage = spmi_regulator_common_set_voltage, | |
1040 | .get_voltage = spmi_regulator_common_get_voltage, | |
1041 | .list_voltage = spmi_regulator_common_list_voltage, | |
1042 | .set_bypass = spmi_regulator_common_set_bypass, | |
1043 | .get_bypass = spmi_regulator_common_get_bypass, | |
1044 | }; | |
1045 | ||
1046 | static struct regulator_ops spmi_vs_ops = { | |
1047 | .enable = spmi_regulator_vs_enable, | |
1048 | .disable = spmi_regulator_common_disable, | |
1049 | .is_enabled = spmi_regulator_common_is_enabled, | |
1050 | .set_pull_down = spmi_regulator_common_set_pull_down, | |
1051 | .set_soft_start = spmi_regulator_common_set_soft_start, | |
e2adfacd | 1052 | .set_over_current_protection = spmi_regulator_vs_ocp, |
e92a4047 SB |
1053 | }; |
1054 | ||
1055 | static struct regulator_ops spmi_boost_ops = { | |
1056 | .enable = spmi_regulator_common_enable, | |
1057 | .disable = spmi_regulator_common_disable, | |
1058 | .is_enabled = spmi_regulator_common_is_enabled, | |
1059 | .set_voltage = spmi_regulator_single_range_set_voltage, | |
1060 | .get_voltage = spmi_regulator_single_range_get_voltage, | |
1061 | .list_voltage = spmi_regulator_common_list_voltage, | |
1062 | .set_input_current_limit = spmi_regulator_set_ilim, | |
1063 | }; | |
1064 | ||
1065 | static struct regulator_ops spmi_ftsmps_ops = { | |
1066 | .enable = spmi_regulator_common_enable, | |
1067 | .disable = spmi_regulator_common_disable, | |
1068 | .is_enabled = spmi_regulator_common_is_enabled, | |
1069 | .set_voltage = spmi_regulator_common_set_voltage, | |
1070 | .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel, | |
1071 | .get_voltage = spmi_regulator_common_get_voltage, | |
1072 | .list_voltage = spmi_regulator_common_list_voltage, | |
1073 | .set_mode = spmi_regulator_common_set_mode, | |
1074 | .get_mode = spmi_regulator_common_get_mode, | |
1075 | .set_load = spmi_regulator_common_set_load, | |
1076 | .set_pull_down = spmi_regulator_common_set_pull_down, | |
1077 | }; | |
1078 | ||
1079 | static struct regulator_ops spmi_ult_lo_smps_ops = { | |
1080 | .enable = spmi_regulator_common_enable, | |
1081 | .disable = spmi_regulator_common_disable, | |
1082 | .is_enabled = spmi_regulator_common_is_enabled, | |
1083 | .set_voltage = spmi_regulator_ult_lo_smps_set_voltage, | |
1084 | .get_voltage = spmi_regulator_ult_lo_smps_get_voltage, | |
1085 | .list_voltage = spmi_regulator_common_list_voltage, | |
1086 | .set_mode = spmi_regulator_common_set_mode, | |
1087 | .get_mode = spmi_regulator_common_get_mode, | |
1088 | .set_load = spmi_regulator_common_set_load, | |
1089 | .set_pull_down = spmi_regulator_common_set_pull_down, | |
1090 | }; | |
1091 | ||
1092 | static struct regulator_ops spmi_ult_ho_smps_ops = { | |
1093 | .enable = spmi_regulator_common_enable, | |
1094 | .disable = spmi_regulator_common_disable, | |
1095 | .is_enabled = spmi_regulator_common_is_enabled, | |
1096 | .set_voltage = spmi_regulator_single_range_set_voltage, | |
1097 | .get_voltage = spmi_regulator_single_range_get_voltage, | |
1098 | .list_voltage = spmi_regulator_common_list_voltage, | |
1099 | .set_mode = spmi_regulator_common_set_mode, | |
1100 | .get_mode = spmi_regulator_common_get_mode, | |
1101 | .set_load = spmi_regulator_common_set_load, | |
1102 | .set_pull_down = spmi_regulator_common_set_pull_down, | |
1103 | }; | |
1104 | ||
1105 | static struct regulator_ops spmi_ult_ldo_ops = { | |
1106 | .enable = spmi_regulator_common_enable, | |
1107 | .disable = spmi_regulator_common_disable, | |
1108 | .is_enabled = spmi_regulator_common_is_enabled, | |
1109 | .set_voltage = spmi_regulator_single_range_set_voltage, | |
1110 | .get_voltage = spmi_regulator_single_range_get_voltage, | |
1111 | .list_voltage = spmi_regulator_common_list_voltage, | |
1112 | .set_mode = spmi_regulator_common_set_mode, | |
1113 | .get_mode = spmi_regulator_common_get_mode, | |
1114 | .set_load = spmi_regulator_common_set_load, | |
1115 | .set_bypass = spmi_regulator_common_set_bypass, | |
1116 | .get_bypass = spmi_regulator_common_get_bypass, | |
1117 | .set_pull_down = spmi_regulator_common_set_pull_down, | |
1118 | .set_soft_start = spmi_regulator_common_set_soft_start, | |
1119 | }; | |
1120 | ||
1121 | /* Maximum possible digital major revision value */ | |
1122 | #define INF 0xFF | |
1123 | ||
1124 | static const struct spmi_regulator_mapping supported_regulators[] = { | |
1125 | /* type subtype dig_min dig_max ltype ops setpoints hpm_min */ | |
1126 | SPMI_VREG(BUCK, GP_CTL, 0, INF, SMPS, smps, smps, 100000), | |
1127 | SPMI_VREG(LDO, N300, 0, INF, LDO, ldo, nldo1, 10000), | |
1128 | SPMI_VREG(LDO, N600, 0, 0, LDO, ldo, nldo2, 10000), | |
1129 | SPMI_VREG(LDO, N1200, 0, 0, LDO, ldo, nldo2, 10000), | |
1130 | SPMI_VREG(LDO, N600, 1, INF, LDO, ldo, nldo3, 10000), | |
1131 | SPMI_VREG(LDO, N1200, 1, INF, LDO, ldo, nldo3, 10000), | |
1132 | SPMI_VREG(LDO, N600_ST, 0, 0, LDO, ldo, nldo2, 10000), | |
1133 | SPMI_VREG(LDO, N1200_ST, 0, 0, LDO, ldo, nldo2, 10000), | |
1134 | SPMI_VREG(LDO, N600_ST, 1, INF, LDO, ldo, nldo3, 10000), | |
1135 | SPMI_VREG(LDO, N1200_ST, 1, INF, LDO, ldo, nldo3, 10000), | |
1136 | SPMI_VREG(LDO, P50, 0, INF, LDO, ldo, pldo, 5000), | |
1137 | SPMI_VREG(LDO, P150, 0, INF, LDO, ldo, pldo, 10000), | |
1138 | SPMI_VREG(LDO, P300, 0, INF, LDO, ldo, pldo, 10000), | |
1139 | SPMI_VREG(LDO, P600, 0, INF, LDO, ldo, pldo, 10000), | |
1140 | SPMI_VREG(LDO, P1200, 0, INF, LDO, ldo, pldo, 10000), | |
1141 | SPMI_VREG(LDO, LN, 0, INF, LN_LDO, ln_ldo, ln_ldo, 0), | |
1142 | SPMI_VREG(LDO, LV_P50, 0, INF, LDO, ldo, pldo, 5000), | |
1143 | SPMI_VREG(LDO, LV_P150, 0, INF, LDO, ldo, pldo, 10000), | |
1144 | SPMI_VREG(LDO, LV_P300, 0, INF, LDO, ldo, pldo, 10000), | |
1145 | SPMI_VREG(LDO, LV_P600, 0, INF, LDO, ldo, pldo, 10000), | |
1146 | SPMI_VREG(LDO, LV_P1200, 0, INF, LDO, ldo, pldo, 10000), | |
1147 | SPMI_VREG_VS(LV100, 0, INF), | |
1148 | SPMI_VREG_VS(LV300, 0, INF), | |
1149 | SPMI_VREG_VS(MV300, 0, INF), | |
1150 | SPMI_VREG_VS(MV500, 0, INF), | |
1151 | SPMI_VREG_VS(HDMI, 0, INF), | |
1152 | SPMI_VREG_VS(OTG, 0, INF), | |
1153 | SPMI_VREG(BOOST, 5V_BOOST, 0, INF, BOOST, boost, boost, 0), | |
1154 | SPMI_VREG(FTS, FTS_CTL, 0, INF, FTSMPS, ftsmps, ftsmps, 100000), | |
1155 | SPMI_VREG(FTS, FTS2p5_CTL, 0, INF, FTSMPS, ftsmps, ftsmps2p5, 100000), | |
1156 | SPMI_VREG(BOOST_BYP, BB_2A, 0, INF, BOOST_BYP, boost, boost_byp, 0), | |
1157 | SPMI_VREG(ULT_BUCK, ULT_HF_CTL1, 0, INF, ULT_LO_SMPS, ult_lo_smps, | |
1158 | ult_lo_smps, 100000), | |
1159 | SPMI_VREG(ULT_BUCK, ULT_HF_CTL2, 0, INF, ULT_LO_SMPS, ult_lo_smps, | |
1160 | ult_lo_smps, 100000), | |
1161 | SPMI_VREG(ULT_BUCK, ULT_HF_CTL3, 0, INF, ULT_LO_SMPS, ult_lo_smps, | |
1162 | ult_lo_smps, 100000), | |
1163 | SPMI_VREG(ULT_BUCK, ULT_HF_CTL4, 0, INF, ULT_HO_SMPS, ult_ho_smps, | |
1164 | ult_ho_smps, 100000), | |
1165 | SPMI_VREG(ULT_LDO, N300_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000), | |
1166 | SPMI_VREG(ULT_LDO, N600_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000), | |
1167 | SPMI_VREG(ULT_LDO, N900_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000), | |
1168 | SPMI_VREG(ULT_LDO, N1200_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000), | |
1169 | SPMI_VREG(ULT_LDO, LV_P150, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), | |
1170 | SPMI_VREG(ULT_LDO, LV_P300, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), | |
1171 | SPMI_VREG(ULT_LDO, LV_P450, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), | |
1172 | SPMI_VREG(ULT_LDO, P600, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), | |
1173 | SPMI_VREG(ULT_LDO, P150, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000), | |
1174 | SPMI_VREG(ULT_LDO, P50, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 5000), | |
1175 | }; | |
1176 | ||
1177 | static void spmi_calculate_num_voltages(struct spmi_voltage_set_points *points) | |
1178 | { | |
1179 | unsigned int n; | |
1180 | struct spmi_voltage_range *range = points->range; | |
1181 | ||
1182 | for (; range < points->range + points->count; range++) { | |
1183 | n = 0; | |
1184 | if (range->set_point_max_uV) { | |
1185 | n = range->set_point_max_uV - range->set_point_min_uV; | |
419d06a1 | 1186 | n = (n / range->step_uV) + 1; |
e92a4047 SB |
1187 | } |
1188 | range->n_voltages = n; | |
1189 | points->n_voltages += n; | |
1190 | } | |
1191 | } | |
1192 | ||
1193 | static int spmi_regulator_match(struct spmi_regulator *vreg, u16 force_type) | |
1194 | { | |
1195 | const struct spmi_regulator_mapping *mapping; | |
1196 | int ret, i; | |
1197 | u32 dig_major_rev; | |
1198 | u8 version[SPMI_COMMON_REG_SUBTYPE - SPMI_COMMON_REG_DIG_MAJOR_REV + 1]; | |
1199 | u8 type, subtype; | |
1200 | ||
1201 | ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_DIG_MAJOR_REV, version, | |
1202 | ARRAY_SIZE(version)); | |
1203 | if (ret) { | |
1204 | dev_err(vreg->dev, "could not read version registers\n"); | |
1205 | return ret; | |
1206 | } | |
1207 | dig_major_rev = version[SPMI_COMMON_REG_DIG_MAJOR_REV | |
1208 | - SPMI_COMMON_REG_DIG_MAJOR_REV]; | |
1209 | if (!force_type) { | |
1210 | type = version[SPMI_COMMON_REG_TYPE - | |
1211 | SPMI_COMMON_REG_DIG_MAJOR_REV]; | |
1212 | subtype = version[SPMI_COMMON_REG_SUBTYPE - | |
1213 | SPMI_COMMON_REG_DIG_MAJOR_REV]; | |
1214 | } else { | |
1215 | type = force_type >> 8; | |
1216 | subtype = force_type; | |
1217 | } | |
1218 | ||
1219 | for (i = 0; i < ARRAY_SIZE(supported_regulators); i++) { | |
1220 | mapping = &supported_regulators[i]; | |
1221 | if (mapping->type == type && mapping->subtype == subtype | |
1222 | && mapping->revision_min <= dig_major_rev | |
1223 | && mapping->revision_max >= dig_major_rev) | |
1224 | goto found; | |
1225 | } | |
1226 | ||
1227 | dev_err(vreg->dev, | |
1228 | "unsupported regulator: name=%s type=0x%02X, subtype=0x%02X, dig major rev=0x%02X\n", | |
1229 | vreg->desc.name, type, subtype, dig_major_rev); | |
1230 | ||
1231 | return -ENODEV; | |
1232 | ||
1233 | found: | |
1234 | vreg->logical_type = mapping->logical_type; | |
1235 | vreg->set_points = mapping->set_points; | |
1236 | vreg->hpm_min_load = mapping->hpm_min_load; | |
1237 | vreg->desc.ops = mapping->ops; | |
1238 | ||
1239 | if (mapping->set_points) { | |
1240 | if (!mapping->set_points->n_voltages) | |
1241 | spmi_calculate_num_voltages(mapping->set_points); | |
1242 | vreg->desc.n_voltages = mapping->set_points->n_voltages; | |
1243 | } | |
1244 | ||
1245 | return 0; | |
1246 | } | |
1247 | ||
1248 | static int spmi_regulator_ftsmps_init_slew_rate(struct spmi_regulator *vreg) | |
1249 | { | |
1250 | int ret; | |
1251 | u8 reg = 0; | |
1252 | int step, delay, slew_rate; | |
1253 | const struct spmi_voltage_range *range; | |
1254 | ||
1255 | ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_STEP_CTRL, ®, 1); | |
1256 | if (ret) { | |
1257 | dev_err(vreg->dev, "spmi read failed, ret=%d\n", ret); | |
1258 | return ret; | |
1259 | } | |
1260 | ||
1261 | range = spmi_regulator_find_range(vreg); | |
1262 | if (!range) | |
1263 | return -EINVAL; | |
1264 | ||
1265 | step = reg & SPMI_FTSMPS_STEP_CTRL_STEP_MASK; | |
1266 | step >>= SPMI_FTSMPS_STEP_CTRL_STEP_SHIFT; | |
1267 | ||
1268 | delay = reg & SPMI_FTSMPS_STEP_CTRL_DELAY_MASK; | |
1269 | delay >>= SPMI_FTSMPS_STEP_CTRL_DELAY_SHIFT; | |
1270 | ||
1271 | /* slew_rate has units of uV/us */ | |
1272 | slew_rate = SPMI_FTSMPS_CLOCK_RATE * range->step_uV * (1 << step); | |
1273 | slew_rate /= 1000 * (SPMI_FTSMPS_STEP_DELAY << delay); | |
1274 | slew_rate *= SPMI_FTSMPS_STEP_MARGIN_NUM; | |
1275 | slew_rate /= SPMI_FTSMPS_STEP_MARGIN_DEN; | |
1276 | ||
1277 | /* Ensure that the slew rate is greater than 0 */ | |
1278 | vreg->slew_rate = max(slew_rate, 1); | |
1279 | ||
1280 | return ret; | |
1281 | } | |
1282 | ||
e2adfacd SB |
1283 | static int spmi_regulator_init_registers(struct spmi_regulator *vreg, |
1284 | const struct spmi_regulator_init_data *data) | |
1285 | { | |
1286 | int ret; | |
1287 | enum spmi_regulator_logical_type type; | |
1288 | u8 ctrl_reg[8], reg, mask; | |
1289 | ||
1290 | type = vreg->logical_type; | |
1291 | ||
1292 | ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8); | |
1293 | if (ret) | |
1294 | return ret; | |
1295 | ||
1296 | /* Set up enable pin control. */ | |
1297 | if ((type == SPMI_REGULATOR_LOGICAL_TYPE_SMPS | |
1298 | || type == SPMI_REGULATOR_LOGICAL_TYPE_LDO | |
1299 | || type == SPMI_REGULATOR_LOGICAL_TYPE_VS) | |
1300 | && !(data->pin_ctrl_enable | |
1301 | & SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT)) { | |
1302 | ctrl_reg[SPMI_COMMON_IDX_ENABLE] &= | |
1303 | ~SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK; | |
1304 | ctrl_reg[SPMI_COMMON_IDX_ENABLE] |= | |
1305 | data->pin_ctrl_enable & SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK; | |
1306 | } | |
1307 | ||
1308 | /* Set up mode pin control. */ | |
1309 | if ((type == SPMI_REGULATOR_LOGICAL_TYPE_SMPS | |
1310 | || type == SPMI_REGULATOR_LOGICAL_TYPE_LDO) | |
1311 | && !(data->pin_ctrl_hpm | |
1312 | & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) { | |
1313 | ctrl_reg[SPMI_COMMON_IDX_MODE] &= | |
1314 | ~SPMI_COMMON_MODE_FOLLOW_ALL_MASK; | |
1315 | ctrl_reg[SPMI_COMMON_IDX_MODE] |= | |
1316 | data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_ALL_MASK; | |
1317 | } | |
1318 | ||
1319 | if (type == SPMI_REGULATOR_LOGICAL_TYPE_VS | |
1320 | && !(data->pin_ctrl_hpm & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) { | |
1321 | ctrl_reg[SPMI_COMMON_IDX_MODE] &= | |
1322 | ~SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK; | |
1323 | ctrl_reg[SPMI_COMMON_IDX_MODE] |= | |
1324 | data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK; | |
1325 | } | |
1326 | ||
1327 | if ((type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS | |
1328 | || type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS | |
1329 | || type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO) | |
1330 | && !(data->pin_ctrl_hpm | |
1331 | & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) { | |
1332 | ctrl_reg[SPMI_COMMON_IDX_MODE] &= | |
1333 | ~SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK; | |
1334 | ctrl_reg[SPMI_COMMON_IDX_MODE] |= | |
1335 | data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK; | |
1336 | } | |
1337 | ||
1338 | /* Write back any control register values that were modified. */ | |
1339 | ret = spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8); | |
1340 | if (ret) | |
1341 | return ret; | |
1342 | ||
1343 | /* Set soft start strength and over current protection for VS. */ | |
1344 | if (type == SPMI_REGULATOR_LOGICAL_TYPE_VS) { | |
1345 | if (data->vs_soft_start_strength | |
1346 | != SPMI_VS_SOFT_START_STR_HW_DEFAULT) { | |
1347 | reg = data->vs_soft_start_strength | |
1348 | & SPMI_VS_SOFT_START_SEL_MASK; | |
1349 | mask = SPMI_VS_SOFT_START_SEL_MASK; | |
1350 | return spmi_vreg_update_bits(vreg, | |
1351 | SPMI_VS_REG_SOFT_START, | |
1352 | reg, mask); | |
1353 | } | |
1354 | } | |
1355 | ||
1356 | return 0; | |
1357 | } | |
1358 | ||
1359 | static void spmi_regulator_get_dt_config(struct spmi_regulator *vreg, | |
1360 | struct device_node *node, struct spmi_regulator_init_data *data) | |
1361 | { | |
1362 | /* | |
1363 | * Initialize configuration parameters to use hardware default in case | |
1364 | * no value is specified via device tree. | |
1365 | */ | |
1366 | data->pin_ctrl_enable = SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT; | |
1367 | data->pin_ctrl_hpm = SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT; | |
1368 | data->vs_soft_start_strength = SPMI_VS_SOFT_START_STR_HW_DEFAULT; | |
1369 | ||
1370 | /* These bindings are optional, so it is okay if they aren't found. */ | |
1371 | of_property_read_u32(node, "qcom,ocp-max-retries", | |
1372 | &vreg->ocp_max_retries); | |
1373 | of_property_read_u32(node, "qcom,ocp-retry-delay", | |
1374 | &vreg->ocp_retry_delay_ms); | |
1375 | of_property_read_u32(node, "qcom,pin-ctrl-enable", | |
1376 | &data->pin_ctrl_enable); | |
1377 | of_property_read_u32(node, "qcom,pin-ctrl-hpm", &data->pin_ctrl_hpm); | |
1378 | of_property_read_u32(node, "qcom,vs-soft-start-strength", | |
1379 | &data->vs_soft_start_strength); | |
1380 | } | |
1381 | ||
e92a4047 SB |
1382 | static unsigned int spmi_regulator_of_map_mode(unsigned int mode) |
1383 | { | |
e2adfacd | 1384 | if (mode == 1) |
e92a4047 | 1385 | return REGULATOR_MODE_NORMAL; |
e2adfacd SB |
1386 | if (mode == 2) |
1387 | return REGULATOR_MODE_FAST; | |
e92a4047 SB |
1388 | |
1389 | return REGULATOR_MODE_IDLE; | |
1390 | } | |
1391 | ||
1392 | static int spmi_regulator_of_parse(struct device_node *node, | |
1393 | const struct regulator_desc *desc, | |
1394 | struct regulator_config *config) | |
1395 | { | |
e2adfacd | 1396 | struct spmi_regulator_init_data data = { }; |
e92a4047 SB |
1397 | struct spmi_regulator *vreg = config->driver_data; |
1398 | struct device *dev = config->dev; | |
1399 | int ret; | |
1400 | ||
e2adfacd SB |
1401 | spmi_regulator_get_dt_config(vreg, node, &data); |
1402 | ||
1403 | if (!vreg->ocp_max_retries) | |
1404 | vreg->ocp_max_retries = SPMI_VS_OCP_DEFAULT_MAX_RETRIES; | |
1405 | if (!vreg->ocp_retry_delay_ms) | |
1406 | vreg->ocp_retry_delay_ms = SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS; | |
1407 | ||
1408 | ret = spmi_regulator_init_registers(vreg, &data); | |
1409 | if (ret) { | |
1410 | dev_err(dev, "common initialization failed, ret=%d\n", ret); | |
1411 | return ret; | |
1412 | } | |
e92a4047 SB |
1413 | |
1414 | if (vreg->logical_type == SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS) { | |
1415 | ret = spmi_regulator_ftsmps_init_slew_rate(vreg); | |
1416 | if (ret) | |
1417 | return ret; | |
1418 | } | |
1419 | ||
1420 | if (vreg->logical_type != SPMI_REGULATOR_LOGICAL_TYPE_VS) | |
1421 | vreg->ocp_irq = 0; | |
1422 | ||
1423 | if (vreg->ocp_irq) { | |
1424 | ret = devm_request_irq(dev, vreg->ocp_irq, | |
1425 | spmi_regulator_vs_ocp_isr, IRQF_TRIGGER_RISING, "ocp", | |
1426 | vreg); | |
1427 | if (ret < 0) { | |
1428 | dev_err(dev, "failed to request irq %d, ret=%d\n", | |
1429 | vreg->ocp_irq, ret); | |
1430 | return ret; | |
1431 | } | |
1432 | ||
1433 | INIT_DELAYED_WORK(&vreg->ocp_work, spmi_regulator_vs_ocp_work); | |
1434 | } | |
1435 | ||
1436 | return 0; | |
1437 | } | |
1438 | ||
1439 | static const struct spmi_regulator_data pm8941_regulators[] = { | |
1440 | { "s1", 0x1400, "vdd_s1", }, | |
1441 | { "s2", 0x1700, "vdd_s2", }, | |
1442 | { "s3", 0x1a00, "vdd_s3", }, | |
1443 | { "l1", 0x4000, "vdd_l1_l3", }, | |
1444 | { "l2", 0x4100, "vdd_l2_lvs_1_2_3", }, | |
1445 | { "l3", 0x4200, "vdd_l1_l3", }, | |
1446 | { "l4", 0x4300, "vdd_l4_l11", }, | |
1447 | { "l5", 0x4400, "vdd_l5_l7", NULL, 0x0410 }, | |
1448 | { "l6", 0x4500, "vdd_l6_l12_l14_l15", }, | |
1449 | { "l7", 0x4600, "vdd_l5_l7", NULL, 0x0410 }, | |
1450 | { "l8", 0x4700, "vdd_l8_l16_l18_19", }, | |
1451 | { "l9", 0x4800, "vdd_l9_l10_l17_l22", }, | |
1452 | { "l10", 0x4900, "vdd_l9_l10_l17_l22", }, | |
1453 | { "l11", 0x4a00, "vdd_l4_l11", }, | |
1454 | { "l12", 0x4b00, "vdd_l6_l12_l14_l15", }, | |
1455 | { "l13", 0x4c00, "vdd_l13_l20_l23_l24", }, | |
1456 | { "l14", 0x4d00, "vdd_l6_l12_l14_l15", }, | |
1457 | { "l15", 0x4e00, "vdd_l6_l12_l14_l15", }, | |
1458 | { "l16", 0x4f00, "vdd_l8_l16_l18_19", }, | |
1459 | { "l17", 0x5000, "vdd_l9_l10_l17_l22", }, | |
1460 | { "l18", 0x5100, "vdd_l8_l16_l18_19", }, | |
1461 | { "l19", 0x5200, "vdd_l8_l16_l18_19", }, | |
1462 | { "l20", 0x5300, "vdd_l13_l20_l23_l24", }, | |
1463 | { "l21", 0x5400, "vdd_l21", }, | |
1464 | { "l22", 0x5500, "vdd_l9_l10_l17_l22", }, | |
1465 | { "l23", 0x5600, "vdd_l13_l20_l23_l24", }, | |
1466 | { "l24", 0x5700, "vdd_l13_l20_l23_l24", }, | |
1467 | { "lvs1", 0x8000, "vdd_l2_lvs_1_2_3", }, | |
1468 | { "lvs2", 0x8100, "vdd_l2_lvs_1_2_3", }, | |
1469 | { "lvs3", 0x8200, "vdd_l2_lvs_1_2_3", }, | |
1470 | { "mvs1", 0x8300, "vin_5vs", }, | |
1471 | { "mvs2", 0x8400, "vin_5vs", }, | |
1472 | { } | |
1473 | }; | |
1474 | ||
1475 | static const struct spmi_regulator_data pm8841_regulators[] = { | |
1476 | { "s1", 0x1400, "vdd_s1", }, | |
1477 | { "s2", 0x1700, "vdd_s2", NULL, 0x1c08 }, | |
1478 | { "s3", 0x1a00, "vdd_s3", }, | |
1479 | { "s4", 0x1d00, "vdd_s4", NULL, 0x1c08 }, | |
1480 | { "s5", 0x2000, "vdd_s5", NULL, 0x1c08 }, | |
1481 | { "s6", 0x2300, "vdd_s6", NULL, 0x1c08 }, | |
1482 | { "s7", 0x2600, "vdd_s7", NULL, 0x1c08 }, | |
1483 | { "s8", 0x2900, "vdd_s8", NULL, 0x1c08 }, | |
1484 | { } | |
1485 | }; | |
1486 | ||
1487 | static const struct spmi_regulator_data pm8916_regulators[] = { | |
1488 | { "s1", 0x1400, "vdd_s1", }, | |
1489 | { "s2", 0x1700, "vdd_s2", }, | |
1490 | { "s3", 0x1a00, "vdd_s3", }, | |
1491 | { "s4", 0x1d00, "vdd_s4", }, | |
1492 | { "l1", 0x4000, "vdd_l1_l3", }, | |
1493 | { "l2", 0x4100, "vdd_l2", }, | |
1494 | { "l3", 0x4200, "vdd_l1_l3", }, | |
1495 | { "l4", 0x4300, "vdd_l4_l5_l6", }, | |
1496 | { "l5", 0x4400, "vdd_l4_l5_l6", }, | |
1497 | { "l6", 0x4500, "vdd_l4_l5_l6", }, | |
1498 | { "l7", 0x4600, "vdd_l7", }, | |
1499 | { "l8", 0x4700, "vdd_l8_l11_l14_l15_l16", }, | |
1500 | { "l9", 0x4800, "vdd_l9_l10_l12_l13_l17_l18", }, | |
1501 | { "l10", 0x4900, "vdd_l9_l10_l12_l13_l17_l18", }, | |
1502 | { "l11", 0x4a00, "vdd_l8_l11_l14_l15_l16", }, | |
1503 | { "l12", 0x4b00, "vdd_l9_l10_l12_l13_l17_l18", }, | |
1504 | { "l13", 0x4c00, "vdd_l9_l10_l12_l13_l17_l18", }, | |
1505 | { "l14", 0x4d00, "vdd_l8_l11_l14_l15_l16", }, | |
1506 | { "l15", 0x4e00, "vdd_l8_l11_l14_l15_l16", }, | |
1507 | { "l16", 0x4f00, "vdd_l8_l11_l14_l15_l16", }, | |
1508 | { "l17", 0x5000, "vdd_l9_l10_l12_l13_l17_l18", }, | |
1509 | { "l18", 0x5100, "vdd_l9_l10_l12_l13_l17_l18", }, | |
1510 | { } | |
1511 | }; | |
1512 | ||
50314e55 SB |
1513 | static const struct spmi_regulator_data pm8994_regulators[] = { |
1514 | { "s1", 0x1400, "vdd_s1", }, | |
1515 | { "s2", 0x1700, "vdd_s2", }, | |
1516 | { "s3", 0x1a00, "vdd_s3", }, | |
1517 | { "s4", 0x1d00, "vdd_s4", }, | |
1518 | { "s5", 0x2000, "vdd_s5", }, | |
1519 | { "s6", 0x2300, "vdd_s6", }, | |
1520 | { "s7", 0x2600, "vdd_s7", }, | |
1521 | { "s8", 0x2900, "vdd_s8", }, | |
1522 | { "s9", 0x2c00, "vdd_s9", }, | |
1523 | { "s10", 0x2f00, "vdd_s10", }, | |
1524 | { "s11", 0x3200, "vdd_s11", }, | |
1525 | { "s12", 0x3500, "vdd_s12", }, | |
1526 | { "l1", 0x4000, "vdd_l1", }, | |
1527 | { "l2", 0x4100, "vdd_l2_l26_l28", }, | |
1528 | { "l3", 0x4200, "vdd_l3_l11", }, | |
1529 | { "l4", 0x4300, "vdd_l4_l27_l31", }, | |
1530 | { "l5", 0x4400, "vdd_l5_l7", }, | |
1531 | { "l6", 0x4500, "vdd_l6_l12_l32", }, | |
1532 | { "l7", 0x4600, "vdd_l5_l7", }, | |
1533 | { "l8", 0x4700, "vdd_l8_l16_l30", }, | |
1534 | { "l9", 0x4800, "vdd_l9_l10_l18_l22", }, | |
1535 | { "l10", 0x4900, "vdd_l9_l10_l18_l22", }, | |
1536 | { "l11", 0x4a00, "vdd_l3_l11", }, | |
1537 | { "l12", 0x4b00, "vdd_l6_l12_l32", }, | |
1538 | { "l13", 0x4c00, "vdd_l13_l19_l23_l24", }, | |
1539 | { "l14", 0x4d00, "vdd_l14_l15", }, | |
1540 | { "l15", 0x4e00, "vdd_l14_l15", }, | |
1541 | { "l16", 0x4f00, "vdd_l8_l16_l30", }, | |
1542 | { "l17", 0x5000, "vdd_l17_l29", }, | |
1543 | { "l18", 0x5100, "vdd_l9_l10_l18_l22", }, | |
1544 | { "l19", 0x5200, "vdd_l13_l19_l23_l24", }, | |
1545 | { "l20", 0x5300, "vdd_l20_l21", }, | |
1546 | { "l21", 0x5400, "vdd_l20_l21", }, | |
1547 | { "l22", 0x5500, "vdd_l9_l10_l18_l22", }, | |
1548 | { "l23", 0x5600, "vdd_l13_l19_l23_l24", }, | |
1549 | { "l24", 0x5700, "vdd_l13_l19_l23_l24", }, | |
1550 | { "l25", 0x5800, "vdd_l25", }, | |
1551 | { "l26", 0x5900, "vdd_l2_l26_l28", }, | |
1552 | { "l27", 0x5a00, "vdd_l4_l27_l31", }, | |
1553 | { "l28", 0x5b00, "vdd_l2_l26_l28", }, | |
1554 | { "l29", 0x5c00, "vdd_l17_l29", }, | |
1555 | { "l30", 0x5d00, "vdd_l8_l16_l30", }, | |
1556 | { "l31", 0x5e00, "vdd_l4_l27_l31", }, | |
1557 | { "l32", 0x5f00, "vdd_l6_l12_l32", }, | |
1558 | { "lvs1", 0x8000, "vdd_lvs_1_2", }, | |
1559 | { "lvs2", 0x8100, "vdd_lvs_1_2", }, | |
1560 | { } | |
1561 | }; | |
1562 | ||
e92a4047 SB |
1563 | static const struct of_device_id qcom_spmi_regulator_match[] = { |
1564 | { .compatible = "qcom,pm8841-regulators", .data = &pm8841_regulators }, | |
1565 | { .compatible = "qcom,pm8916-regulators", .data = &pm8916_regulators }, | |
1566 | { .compatible = "qcom,pm8941-regulators", .data = &pm8941_regulators }, | |
50314e55 | 1567 | { .compatible = "qcom,pm8994-regulators", .data = &pm8994_regulators }, |
e92a4047 SB |
1568 | { } |
1569 | }; | |
1570 | MODULE_DEVICE_TABLE(of, qcom_spmi_regulator_match); | |
1571 | ||
1572 | static int qcom_spmi_regulator_probe(struct platform_device *pdev) | |
1573 | { | |
1574 | const struct spmi_regulator_data *reg; | |
1575 | const struct of_device_id *match; | |
1576 | struct regulator_config config = { }; | |
1577 | struct regulator_dev *rdev; | |
1578 | struct spmi_regulator *vreg; | |
1579 | struct regmap *regmap; | |
1580 | const char *name; | |
1581 | struct device *dev = &pdev->dev; | |
1582 | int ret; | |
1583 | struct list_head *vreg_list; | |
1584 | ||
1585 | vreg_list = devm_kzalloc(dev, sizeof(*vreg_list), GFP_KERNEL); | |
1586 | if (!vreg_list) | |
1587 | return -ENOMEM; | |
1588 | INIT_LIST_HEAD(vreg_list); | |
1589 | platform_set_drvdata(pdev, vreg_list); | |
1590 | ||
1591 | regmap = dev_get_regmap(dev->parent, NULL); | |
1592 | if (!regmap) | |
1593 | return -ENODEV; | |
1594 | ||
1595 | match = of_match_device(qcom_spmi_regulator_match, &pdev->dev); | |
1596 | if (!match) | |
1597 | return -ENODEV; | |
1598 | ||
1599 | for (reg = match->data; reg->name; reg++) { | |
1600 | vreg = devm_kzalloc(dev, sizeof(*vreg), GFP_KERNEL); | |
1601 | if (!vreg) | |
1602 | return -ENOMEM; | |
1603 | ||
1604 | vreg->dev = dev; | |
1605 | vreg->base = reg->base; | |
1606 | vreg->regmap = regmap; | |
1607 | ||
1608 | if (reg->ocp) { | |
1609 | vreg->ocp_irq = platform_get_irq_byname(pdev, reg->ocp); | |
1610 | if (vreg->ocp_irq < 0) { | |
1611 | ret = vreg->ocp_irq; | |
1612 | goto err; | |
1613 | } | |
1614 | } | |
1615 | ||
1616 | vreg->desc.id = -1; | |
1617 | vreg->desc.owner = THIS_MODULE; | |
1618 | vreg->desc.type = REGULATOR_VOLTAGE; | |
1619 | vreg->desc.name = name = reg->name; | |
1620 | vreg->desc.supply_name = reg->supply; | |
1621 | vreg->desc.of_match = reg->name; | |
1622 | vreg->desc.of_parse_cb = spmi_regulator_of_parse; | |
1623 | vreg->desc.of_map_mode = spmi_regulator_of_map_mode; | |
1624 | ||
1625 | ret = spmi_regulator_match(vreg, reg->force_type); | |
1626 | if (ret) | |
1627 | goto err; | |
1628 | ||
1629 | config.dev = dev; | |
1630 | config.driver_data = vreg; | |
1631 | rdev = devm_regulator_register(dev, &vreg->desc, &config); | |
1632 | if (IS_ERR(rdev)) { | |
1633 | dev_err(dev, "failed to register %s\n", name); | |
1634 | ret = PTR_ERR(rdev); | |
1635 | goto err; | |
1636 | } | |
1637 | ||
1638 | INIT_LIST_HEAD(&vreg->node); | |
1639 | list_add(&vreg->node, vreg_list); | |
1640 | } | |
1641 | ||
1642 | return 0; | |
1643 | ||
1644 | err: | |
1645 | list_for_each_entry(vreg, vreg_list, node) | |
1646 | if (vreg->ocp_irq) | |
1647 | cancel_delayed_work_sync(&vreg->ocp_work); | |
1648 | return ret; | |
1649 | } | |
1650 | ||
1651 | static int qcom_spmi_regulator_remove(struct platform_device *pdev) | |
1652 | { | |
1653 | struct spmi_regulator *vreg; | |
1654 | struct list_head *vreg_list = platform_get_drvdata(pdev); | |
1655 | ||
1656 | list_for_each_entry(vreg, vreg_list, node) | |
1657 | if (vreg->ocp_irq) | |
1658 | cancel_delayed_work_sync(&vreg->ocp_work); | |
1659 | ||
1660 | return 0; | |
1661 | } | |
1662 | ||
1663 | static struct platform_driver qcom_spmi_regulator_driver = { | |
1664 | .driver = { | |
1665 | .name = "qcom-spmi-regulator", | |
1666 | .of_match_table = qcom_spmi_regulator_match, | |
1667 | }, | |
1668 | .probe = qcom_spmi_regulator_probe, | |
1669 | .remove = qcom_spmi_regulator_remove, | |
1670 | }; | |
1671 | module_platform_driver(qcom_spmi_regulator_driver); | |
1672 | ||
1673 | MODULE_DESCRIPTION("Qualcomm SPMI PMIC regulator driver"); | |
1674 | MODULE_LICENSE("GPL v2"); | |
1675 | MODULE_ALIAS("platform:qcom-spmi-regulator"); |