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Merge branch 'r6040-next'
[linux/fpc-iii.git] / drivers / regulator / qcom_spmi-regulator.c
blob84cce21e98cd0ab3fd3a854a99bfd5d8edaaf85f
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
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
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 #define SPMI_DEFAULT_STEP_DELAY 20
250
251 /*
252 * The ratio SPMI_FTSMPS_STEP_MARGIN_NUM/SPMI_FTSMPS_STEP_MARGIN_DEN is used to
253 * adjust the step rate in order to account for oscillator variance.
254 */
255 #define SPMI_FTSMPS_STEP_MARGIN_NUM 4
256 #define SPMI_FTSMPS_STEP_MARGIN_DEN 5
257
258 /* VSET value to decide the range of ULT SMPS */
259 #define ULT_SMPS_RANGE_SPLIT 0x60
260
261 /**
262 * struct spmi_voltage_range - regulator set point voltage mapping description
263 * @min_uV: Minimum programmable output voltage resulting from
264 * set point register value 0x00
265 * @max_uV: Maximum programmable output voltage
266 * @step_uV: Output voltage increase resulting from the set point
267 * register value increasing by 1
268 * @set_point_min_uV: Minimum allowed voltage
269 * @set_point_max_uV: Maximum allowed voltage. This may be tweaked in order
270 * to pick which range should be used in the case of
271 * overlapping set points.
272 * @n_voltages: Number of preferred voltage set points present in this
273 * range
274 * @range_sel: Voltage range register value corresponding to this range
275 *
276 * The following relationships must be true for the values used in this struct:
277 * (max_uV - min_uV) % step_uV == 0
278 * (set_point_min_uV - min_uV) % step_uV == 0*
279 * (set_point_max_uV - min_uV) % step_uV == 0*
280 * n_voltages = (set_point_max_uV - set_point_min_uV) / step_uV + 1
281 *
282 * *Note, set_point_min_uV == set_point_max_uV == 0 is allowed in order to
283 * specify that the voltage range has meaning, but is not preferred.
284 */
285 struct spmi_voltage_range {
286 int min_uV;
287 int max_uV;
288 int step_uV;
289 int set_point_min_uV;
290 int set_point_max_uV;
291 unsigned n_voltages;
292 u8 range_sel;
293 };
294
295 /*
296 * The ranges specified in the spmi_voltage_set_points struct must be listed
297 * so that range[i].set_point_max_uV < range[i+1].set_point_min_uV.
298 */
299 struct spmi_voltage_set_points {
300 struct spmi_voltage_range *range;
301 int count;
302 unsigned n_voltages;
303 };
304
305 struct spmi_regulator {
306 struct regulator_desc desc;
307 struct device *dev;
308 struct delayed_work ocp_work;
309 struct regmap *regmap;
310 struct spmi_voltage_set_points *set_points;
311 enum spmi_regulator_logical_type logical_type;
312 int ocp_irq;
313 int ocp_count;
314 int ocp_max_retries;
315 int ocp_retry_delay_ms;
316 int hpm_min_load;
317 int slew_rate;
318 ktime_t vs_enable_time;
319 u16 base;
320 struct list_head node;
321 };
322
323 struct spmi_regulator_mapping {
324 enum spmi_regulator_type type;
325 enum spmi_regulator_subtype subtype;
326 enum spmi_regulator_logical_type logical_type;
327 u32 revision_min;
328 u32 revision_max;
329 struct regulator_ops *ops;
330 struct spmi_voltage_set_points *set_points;
331 int hpm_min_load;
332 };
333
334 struct spmi_regulator_data {
335 const char *name;
336 u16 base;
337 const char *supply;
338 const char *ocp;
339 u16 force_type;
340 };
341
342 #define SPMI_VREG(_type, _subtype, _dig_major_min, _dig_major_max, \
343 _logical_type, _ops_val, _set_points_val, _hpm_min_load) \
344 { \
345 .type = SPMI_REGULATOR_TYPE_##_type, \
346 .subtype = SPMI_REGULATOR_SUBTYPE_##_subtype, \
347 .revision_min = _dig_major_min, \
348 .revision_max = _dig_major_max, \
349 .logical_type = SPMI_REGULATOR_LOGICAL_TYPE_##_logical_type, \
350 .ops = &spmi_##_ops_val##_ops, \
351 .set_points = &_set_points_val##_set_points, \
352 .hpm_min_load = _hpm_min_load, \
353 }
354
355 #define SPMI_VREG_VS(_subtype, _dig_major_min, _dig_major_max) \
356 { \
357 .type = SPMI_REGULATOR_TYPE_VS, \
358 .subtype = SPMI_REGULATOR_SUBTYPE_##_subtype, \
359 .revision_min = _dig_major_min, \
360 .revision_max = _dig_major_max, \
361 .logical_type = SPMI_REGULATOR_LOGICAL_TYPE_VS, \
362 .ops = &spmi_vs_ops, \
363 }
364
365 #define SPMI_VOLTAGE_RANGE(_range_sel, _min_uV, _set_point_min_uV, \
366 _set_point_max_uV, _max_uV, _step_uV) \
367 { \
368 .min_uV = _min_uV, \
369 .max_uV = _max_uV, \
370 .set_point_min_uV = _set_point_min_uV, \
371 .set_point_max_uV = _set_point_max_uV, \
372 .step_uV = _step_uV, \
373 .range_sel = _range_sel, \
374 }
375
376 #define DEFINE_SPMI_SET_POINTS(name) \
377 struct spmi_voltage_set_points name##_set_points = { \
378 .range = name##_ranges, \
379 .count = ARRAY_SIZE(name##_ranges), \
380 }
381
382 /*
383 * These tables contain the physically available PMIC regulator voltage setpoint
384 * ranges. Where two ranges overlap in hardware, one of the ranges is trimmed
385 * to ensure that the setpoints available to software are monotonically
386 * increasing and unique. The set_voltage callback functions expect these
387 * properties to hold.
388 */
389 static struct spmi_voltage_range pldo_ranges[] = {
390 SPMI_VOLTAGE_RANGE(2, 750000, 750000, 1537500, 1537500, 12500),
391 SPMI_VOLTAGE_RANGE(3, 1500000, 1550000, 3075000, 3075000, 25000),
392 SPMI_VOLTAGE_RANGE(4, 1750000, 3100000, 4900000, 4900000, 50000),
393 };
394
395 static struct spmi_voltage_range nldo1_ranges[] = {
396 SPMI_VOLTAGE_RANGE(2, 750000, 750000, 1537500, 1537500, 12500),
397 };
398
399 static struct spmi_voltage_range nldo2_ranges[] = {
400 SPMI_VOLTAGE_RANGE(0, 375000, 0, 0, 1537500, 12500),
401 SPMI_VOLTAGE_RANGE(1, 375000, 375000, 768750, 768750, 6250),
402 SPMI_VOLTAGE_RANGE(2, 750000, 775000, 1537500, 1537500, 12500),
403 };
404
405 static struct spmi_voltage_range nldo3_ranges[] = {
406 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1537500, 1537500, 12500),
407 SPMI_VOLTAGE_RANGE(1, 375000, 0, 0, 1537500, 12500),
408 SPMI_VOLTAGE_RANGE(2, 750000, 0, 0, 1537500, 12500),
409 };
410
411 static struct spmi_voltage_range ln_ldo_ranges[] = {
412 SPMI_VOLTAGE_RANGE(1, 690000, 690000, 1110000, 1110000, 60000),
413 SPMI_VOLTAGE_RANGE(0, 1380000, 1380000, 2220000, 2220000, 120000),
414 };
415
416 static struct spmi_voltage_range smps_ranges[] = {
417 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1562500, 1562500, 12500),
418 SPMI_VOLTAGE_RANGE(1, 1550000, 1575000, 3125000, 3125000, 25000),
419 };
420
421 static struct spmi_voltage_range ftsmps_ranges[] = {
422 SPMI_VOLTAGE_RANGE(0, 0, 350000, 1275000, 1275000, 5000),
423 SPMI_VOLTAGE_RANGE(1, 0, 1280000, 2040000, 2040000, 10000),
424 };
425
426 static struct spmi_voltage_range ftsmps2p5_ranges[] = {
427 SPMI_VOLTAGE_RANGE(0, 80000, 350000, 1355000, 1355000, 5000),
428 SPMI_VOLTAGE_RANGE(1, 160000, 1360000, 2200000, 2200000, 10000),
429 };
430
431 static struct spmi_voltage_range boost_ranges[] = {
432 SPMI_VOLTAGE_RANGE(0, 4000000, 4000000, 5550000, 5550000, 50000),
433 };
434
435 static struct spmi_voltage_range boost_byp_ranges[] = {
436 SPMI_VOLTAGE_RANGE(0, 2500000, 2500000, 5200000, 5650000, 50000),
437 };
438
439 static struct spmi_voltage_range ult_lo_smps_ranges[] = {
440 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1562500, 1562500, 12500),
441 SPMI_VOLTAGE_RANGE(1, 750000, 0, 0, 1525000, 25000),
442 };
443
444 static struct spmi_voltage_range ult_ho_smps_ranges[] = {
445 SPMI_VOLTAGE_RANGE(0, 1550000, 1550000, 2325000, 2325000, 25000),
446 };
447
448 static struct spmi_voltage_range ult_nldo_ranges[] = {
449 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1537500, 1537500, 12500),
450 };
451
452 static struct spmi_voltage_range ult_pldo_ranges[] = {
453 SPMI_VOLTAGE_RANGE(0, 1750000, 1750000, 3337500, 3337500, 12500),
454 };
455
456 static DEFINE_SPMI_SET_POINTS(pldo);
457 static DEFINE_SPMI_SET_POINTS(nldo1);
458 static DEFINE_SPMI_SET_POINTS(nldo2);
459 static DEFINE_SPMI_SET_POINTS(nldo3);
460 static DEFINE_SPMI_SET_POINTS(ln_ldo);
461 static DEFINE_SPMI_SET_POINTS(smps);
462 static DEFINE_SPMI_SET_POINTS(ftsmps);
463 static DEFINE_SPMI_SET_POINTS(ftsmps2p5);
464 static DEFINE_SPMI_SET_POINTS(boost);
465 static DEFINE_SPMI_SET_POINTS(boost_byp);
466 static DEFINE_SPMI_SET_POINTS(ult_lo_smps);
467 static DEFINE_SPMI_SET_POINTS(ult_ho_smps);
468 static DEFINE_SPMI_SET_POINTS(ult_nldo);
469 static DEFINE_SPMI_SET_POINTS(ult_pldo);
470
471 static inline int spmi_vreg_read(struct spmi_regulator *vreg, u16 addr, u8 *buf,
472 int len)
473 {
474 return regmap_bulk_read(vreg->regmap, vreg->base + addr, buf, len);
475 }
476
477 static inline int spmi_vreg_write(struct spmi_regulator *vreg, u16 addr,
478 u8 *buf, int len)
479 {
480 return regmap_bulk_write(vreg->regmap, vreg->base + addr, buf, len);
481 }
482
483 static int spmi_vreg_update_bits(struct spmi_regulator *vreg, u16 addr, u8 val,
484 u8 mask)
485 {
486 return regmap_update_bits(vreg->regmap, vreg->base + addr, mask, val);
487 }
488
489 static int spmi_regulator_common_is_enabled(struct regulator_dev *rdev)
490 {
491 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
492 u8 reg;
493
494 spmi_vreg_read(vreg, SPMI_COMMON_REG_ENABLE, &reg, 1);
495
496 return (reg & SPMI_COMMON_ENABLE_MASK) == SPMI_COMMON_ENABLE;
497 }
498
499 static int spmi_regulator_common_enable(struct regulator_dev *rdev)
500 {
501 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
502
503 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE,
504 SPMI_COMMON_ENABLE, SPMI_COMMON_ENABLE_MASK);
505 }
506
507 static int spmi_regulator_vs_enable(struct regulator_dev *rdev)
508 {
509 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
510
511 if (vreg->ocp_irq) {
512 vreg->ocp_count = 0;
513 vreg->vs_enable_time = ktime_get();
514 }
515
516 return spmi_regulator_common_enable(rdev);
517 }
518
519 static int spmi_regulator_vs_ocp(struct regulator_dev *rdev)
520 {
521 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
522 u8 reg = SPMI_VS_OCP_OVERRIDE;
523
524 return spmi_vreg_write(vreg, SPMI_VS_REG_OCP, &reg, 1);
525 }
526
527 static int spmi_regulator_common_disable(struct regulator_dev *rdev)
528 {
529 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
530
531 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE,
532 SPMI_COMMON_DISABLE, SPMI_COMMON_ENABLE_MASK);
533 }
534
535 static int spmi_regulator_select_voltage(struct spmi_regulator *vreg,
536 int min_uV, int max_uV)
537 {
538 const struct spmi_voltage_range *range;
539 int uV = min_uV;
540 int lim_min_uV, lim_max_uV, i, range_id, range_max_uV;
541 int selector, voltage_sel;
542
543 /* Check if request voltage is outside of physically settable range. */
544 lim_min_uV = vreg->set_points->range[0].set_point_min_uV;
545 lim_max_uV =
546 vreg->set_points->range[vreg->set_points->count - 1].set_point_max_uV;
547
548 if (uV < lim_min_uV && max_uV >= lim_min_uV)
549 uV = lim_min_uV;
550
551 if (uV < lim_min_uV || uV > lim_max_uV) {
552 dev_err(vreg->dev,
553 "request v=[%d, %d] is outside possible v=[%d, %d]\n",
554 min_uV, max_uV, lim_min_uV, lim_max_uV);
555 return -EINVAL;
556 }
557
558 /* Find the range which uV is inside of. */
559 for (i = vreg->set_points->count - 1; i > 0; i--) {
560 range_max_uV = vreg->set_points->range[i - 1].set_point_max_uV;
561 if (uV > range_max_uV && range_max_uV > 0)
562 break;
563 }
564
565 range_id = i;
566 range = &vreg->set_points->range[range_id];
567
568 /*
569 * Force uV to be an allowed set point by applying a ceiling function to
570 * the uV value.
571 */
572 voltage_sel = DIV_ROUND_UP(uV - range->min_uV, range->step_uV);
573 uV = voltage_sel * range->step_uV + range->min_uV;
574
575 if (uV > max_uV) {
576 dev_err(vreg->dev,
577 "request v=[%d, %d] cannot be met by any set point; "
578 "next set point: %d\n",
579 min_uV, max_uV, uV);
580 return -EINVAL;
581 }
582
583 selector = 0;
584 for (i = 0; i < range_id; i++)
585 selector += vreg->set_points->range[i].n_voltages;
586 selector += (uV - range->set_point_min_uV) / range->step_uV;
587
588 return selector;
589 }
590
591 static int spmi_sw_selector_to_hw(struct spmi_regulator *vreg,
592 unsigned selector, u8 *range_sel,
593 u8 *voltage_sel)
594 {
595 const struct spmi_voltage_range *range, *end;
596
597 range = vreg->set_points->range;
598 end = range + vreg->set_points->count;
599
600 for (; range < end; range++) {
601 if (selector < range->n_voltages) {
602 *voltage_sel = selector;
603 *range_sel = range->range_sel;
604 return 0;
605 }
606
607 selector -= range->n_voltages;
608 }
609
610 return -EINVAL;
611 }
612
613 static int spmi_hw_selector_to_sw(struct spmi_regulator *vreg, u8 hw_sel,
614 const struct spmi_voltage_range *range)
615 {
616 int sw_sel = hw_sel;
617 const struct spmi_voltage_range *r = vreg->set_points->range;
618
619 while (r != range) {
620 sw_sel += r->n_voltages;
621 r++;
622 }
623
624 return sw_sel;
625 }
626
627 static const struct spmi_voltage_range *
628 spmi_regulator_find_range(struct spmi_regulator *vreg)
629 {
630 u8 range_sel;
631 const struct spmi_voltage_range *range, *end;
632
633 range = vreg->set_points->range;
634 end = range + vreg->set_points->count;
635
636 spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, &range_sel, 1);
637
638 for (; range < end; range++)
639 if (range->range_sel == range_sel)
640 return range;
641
642 return NULL;
643 }
644
645 static int spmi_regulator_select_voltage_same_range(struct spmi_regulator *vreg,
646 int min_uV, int max_uV)
647 {
648 const struct spmi_voltage_range *range;
649 int uV = min_uV;
650 int i, selector;
651
652 range = spmi_regulator_find_range(vreg);
653 if (!range)
654 goto different_range;
655
656 if (uV < range->min_uV && max_uV >= range->min_uV)
657 uV = range->min_uV;
658
659 if (uV < range->min_uV || uV > range->max_uV) {
660 /* Current range doesn't support the requested voltage. */
661 goto different_range;
662 }
663
664 /*
665 * Force uV to be an allowed set point by applying a ceiling function to
666 * the uV value.
667 */
668 uV = DIV_ROUND_UP(uV - range->min_uV, range->step_uV);
669 uV = uV * range->step_uV + range->min_uV;
670
671 if (uV > max_uV) {
672 /*
673 * No set point in the current voltage range is within the
674 * requested min_uV to max_uV range.
675 */
676 goto different_range;
677 }
678
679 selector = 0;
680 for (i = 0; i < vreg->set_points->count; i++) {
681 if (uV >= vreg->set_points->range[i].set_point_min_uV
682 && uV <= vreg->set_points->range[i].set_point_max_uV) {
683 selector +=
684 (uV - vreg->set_points->range[i].set_point_min_uV)
685 / vreg->set_points->range[i].step_uV;
686 break;
687 }
688
689 selector += vreg->set_points->range[i].n_voltages;
690 }
691
692 if (selector >= vreg->set_points->n_voltages)
693 goto different_range;
694
695 return selector;
696
697 different_range:
698 return spmi_regulator_select_voltage(vreg, min_uV, max_uV);
699 }
700
701 static int spmi_regulator_common_map_voltage(struct regulator_dev *rdev,
702 int min_uV, int max_uV)
703 {
704 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
705
706 /*
707 * Favor staying in the current voltage range if possible. This avoids
708 * voltage spikes that occur when changing the voltage range.
709 */
710 return spmi_regulator_select_voltage_same_range(vreg, min_uV, max_uV);
711 }
712
713 static int
714 spmi_regulator_common_set_voltage(struct regulator_dev *rdev, unsigned selector)
715 {
716 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
717 int ret;
718 u8 buf[2];
719 u8 range_sel, voltage_sel;
720
721 ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel);
722 if (ret)
723 return ret;
724
725 buf[0] = range_sel;
726 buf[1] = voltage_sel;
727 return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, buf, 2);
728 }
729
730 static int spmi_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
731 unsigned int old_selector, unsigned int new_selector)
732 {
733 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
734 const struct spmi_voltage_range *range;
735 int diff_uV;
736
737 range = spmi_regulator_find_range(vreg);
738 if (!range)
739 return -EINVAL;
740
741 diff_uV = abs(new_selector - old_selector) * range->step_uV;
742
743 return DIV_ROUND_UP(diff_uV, vreg->slew_rate);
744 }
745
746 static int spmi_regulator_common_get_voltage(struct regulator_dev *rdev)
747 {
748 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
749 const struct spmi_voltage_range *range;
750 u8 voltage_sel;
751
752 spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1);
753
754 range = spmi_regulator_find_range(vreg);
755 if (!range)
756 return -EINVAL;
757
758 return spmi_hw_selector_to_sw(vreg, voltage_sel, range);
759 }
760
761 static int spmi_regulator_single_map_voltage(struct regulator_dev *rdev,
762 int min_uV, int max_uV)
763 {
764 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
765
766 return spmi_regulator_select_voltage(vreg, min_uV, max_uV);
767 }
768
769 static int spmi_regulator_single_range_set_voltage(struct regulator_dev *rdev,
770 unsigned selector)
771 {
772 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
773 u8 sel = selector;
774
775 /*
776 * Certain types of regulators do not have a range select register so
777 * only voltage set register needs to be written.
778 */
779 return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &sel, 1);
780 }
781
782 static int spmi_regulator_single_range_get_voltage(struct regulator_dev *rdev)
783 {
784 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
785 u8 selector;
786 int ret;
787
788 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &selector, 1);
789 if (ret)
790 return ret;
791
792 return selector;
793 }
794
795 static int spmi_regulator_ult_lo_smps_set_voltage(struct regulator_dev *rdev,
796 unsigned selector)
797 {
798 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
799 int ret;
800 u8 range_sel, voltage_sel;
801
802 ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel);
803 if (ret)
804 return ret;
805
806 /*
807 * Calculate VSET based on range
808 * In case of range 0: voltage_sel is a 7 bit value, can be written
809 * witout any modification.
810 * In case of range 1: voltage_sel is a 5 bit value, bits[7-5] set to
811 * [011].
812 */
813 if (range_sel == 1)
814 voltage_sel |= ULT_SMPS_RANGE_SPLIT;
815
816 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_VOLTAGE_SET,
817 voltage_sel, 0xff);
818 }
819
820 static int spmi_regulator_ult_lo_smps_get_voltage(struct regulator_dev *rdev)
821 {
822 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
823 const struct spmi_voltage_range *range;
824 u8 voltage_sel;
825
826 spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1);
827
828 range = spmi_regulator_find_range(vreg);
829 if (!range)
830 return -EINVAL;
831
832 if (range->range_sel == 1)
833 voltage_sel &= ~ULT_SMPS_RANGE_SPLIT;
834
835 return spmi_hw_selector_to_sw(vreg, voltage_sel, range);
836 }
837
838 static int spmi_regulator_common_list_voltage(struct regulator_dev *rdev,
839 unsigned selector)
840 {
841 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
842 int uV = 0;
843 int i;
844
845 if (selector >= vreg->set_points->n_voltages)
846 return 0;
847
848 for (i = 0; i < vreg->set_points->count; i++) {
849 if (selector < vreg->set_points->range[i].n_voltages) {
850 uV = selector * vreg->set_points->range[i].step_uV
851 + vreg->set_points->range[i].set_point_min_uV;
852 break;
853 }
854
855 selector -= vreg->set_points->range[i].n_voltages;
856 }
857
858 return uV;
859 }
860
861 static int
862 spmi_regulator_common_set_bypass(struct regulator_dev *rdev, bool enable)
863 {
864 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
865 u8 mask = SPMI_COMMON_MODE_BYPASS_MASK;
866 u8 val = 0;
867
868 if (enable)
869 val = mask;
870
871 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
872 }
873
874 static int
875 spmi_regulator_common_get_bypass(struct regulator_dev *rdev, bool *enable)
876 {
877 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
878 u8 val;
879 int ret;
880
881 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &val, 1);
882 *enable = val & SPMI_COMMON_MODE_BYPASS_MASK;
883
884 return ret;
885 }
886
887 static unsigned int spmi_regulator_common_get_mode(struct regulator_dev *rdev)
888 {
889 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
890 u8 reg;
891
892 spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &reg, 1);
893
894 if (reg & SPMI_COMMON_MODE_HPM_MASK)
895 return REGULATOR_MODE_NORMAL;
896
897 if (reg & SPMI_COMMON_MODE_AUTO_MASK)
898 return REGULATOR_MODE_FAST;
899
900 return REGULATOR_MODE_IDLE;
901 }
902
903 static int
904 spmi_regulator_common_set_mode(struct regulator_dev *rdev, unsigned int mode)
905 {
906 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
907 u8 mask = SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK;
908 u8 val = 0;
909
910 if (mode == REGULATOR_MODE_NORMAL)
911 val = SPMI_COMMON_MODE_HPM_MASK;
912 else if (mode == REGULATOR_MODE_FAST)
913 val = SPMI_COMMON_MODE_AUTO_MASK;
914
915 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
916 }
917
918 static int
919 spmi_regulator_common_set_load(struct regulator_dev *rdev, int load_uA)
920 {
921 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
922 unsigned int mode;
923
924 if (load_uA >= vreg->hpm_min_load)
925 mode = REGULATOR_MODE_NORMAL;
926 else
927 mode = REGULATOR_MODE_IDLE;
928
929 return spmi_regulator_common_set_mode(rdev, mode);
930 }
931
932 static int spmi_regulator_common_set_pull_down(struct regulator_dev *rdev)
933 {
934 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
935 unsigned int mask = SPMI_COMMON_PULL_DOWN_ENABLE_MASK;
936
937 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_PULL_DOWN,
938 mask, mask);
939 }
940
941 static int spmi_regulator_common_set_soft_start(struct regulator_dev *rdev)
942 {
943 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
944 unsigned int mask = SPMI_LDO_SOFT_START_ENABLE_MASK;
945
946 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_SOFT_START,
947 mask, mask);
948 }
949
950 static int spmi_regulator_set_ilim(struct regulator_dev *rdev, int ilim_uA)
951 {
952 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
953 enum spmi_regulator_logical_type type = vreg->logical_type;
954 unsigned int current_reg;
955 u8 reg;
956 u8 mask = SPMI_BOOST_CURRENT_LIMIT_MASK |
957 SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK;
958 int max = (SPMI_BOOST_CURRENT_LIMIT_MASK + 1) * 500;
959
960 if (type == SPMI_REGULATOR_LOGICAL_TYPE_BOOST)
961 current_reg = SPMI_BOOST_REG_CURRENT_LIMIT;
962 else
963 current_reg = SPMI_BOOST_BYP_REG_CURRENT_LIMIT;
964
965 if (ilim_uA > max || ilim_uA <= 0)
966 return -EINVAL;
967
968 reg = (ilim_uA - 1) / 500;
969 reg |= SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK;
970
971 return spmi_vreg_update_bits(vreg, current_reg, reg, mask);
972 }
973
974 static int spmi_regulator_vs_clear_ocp(struct spmi_regulator *vreg)
975 {
976 int ret;
977
978 ret = spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE,
979 SPMI_COMMON_DISABLE, SPMI_COMMON_ENABLE_MASK);
980
981 vreg->vs_enable_time = ktime_get();
982
983 ret = spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE,
984 SPMI_COMMON_ENABLE, SPMI_COMMON_ENABLE_MASK);
985
986 return ret;
987 }
988
989 static void spmi_regulator_vs_ocp_work(struct work_struct *work)
990 {
991 struct delayed_work *dwork = to_delayed_work(work);
992 struct spmi_regulator *vreg
993 = container_of(dwork, struct spmi_regulator, ocp_work);
994
995 spmi_regulator_vs_clear_ocp(vreg);
996 }
997
998 static irqreturn_t spmi_regulator_vs_ocp_isr(int irq, void *data)
999 {
1000 struct spmi_regulator *vreg = data;
1001 ktime_t ocp_irq_time;
1002 s64 ocp_trigger_delay_us;
1003
1004 ocp_irq_time = ktime_get();
1005 ocp_trigger_delay_us = ktime_us_delta(ocp_irq_time,
1006 vreg->vs_enable_time);
1007
1008 /*
1009 * Reset the OCP count if there is a large delay between switch enable
1010 * and when OCP triggers. This is indicative of a hotplug event as
1011 * opposed to a fault.
1012 */
1013 if (ocp_trigger_delay_us > SPMI_VS_OCP_FAULT_DELAY_US)
1014 vreg->ocp_count = 0;
1015
1016 /* Wait for switch output to settle back to 0 V after OCP triggered. */
1017 udelay(SPMI_VS_OCP_FALL_DELAY_US);
1018
1019 vreg->ocp_count++;
1020
1021 if (vreg->ocp_count == 1) {
1022 /* Immediately clear the over current condition. */
1023 spmi_regulator_vs_clear_ocp(vreg);
1024 } else if (vreg->ocp_count <= vreg->ocp_max_retries) {
1025 /* Schedule the over current clear task to run later. */
1026 schedule_delayed_work(&vreg->ocp_work,
1027 msecs_to_jiffies(vreg->ocp_retry_delay_ms) + 1);
1028 } else {
1029 dev_err(vreg->dev,
1030 "OCP triggered %d times; no further retries\n",
1031 vreg->ocp_count);
1032 }
1033
1034 return IRQ_HANDLED;
1035 }
1036
1037 static struct regulator_ops spmi_smps_ops = {
1038 .enable = spmi_regulator_common_enable,
1039 .disable = spmi_regulator_common_disable,
1040 .is_enabled = spmi_regulator_common_is_enabled,
1041 .set_voltage_sel = spmi_regulator_common_set_voltage,
1042 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
1043 .get_voltage_sel = spmi_regulator_common_get_voltage,
1044 .map_voltage = spmi_regulator_common_map_voltage,
1045 .list_voltage = spmi_regulator_common_list_voltage,
1046 .set_mode = spmi_regulator_common_set_mode,
1047 .get_mode = spmi_regulator_common_get_mode,
1048 .set_load = spmi_regulator_common_set_load,
1049 .set_pull_down = spmi_regulator_common_set_pull_down,
1050 };
1051
1052 static struct regulator_ops spmi_ldo_ops = {
1053 .enable = spmi_regulator_common_enable,
1054 .disable = spmi_regulator_common_disable,
1055 .is_enabled = spmi_regulator_common_is_enabled,
1056 .set_voltage_sel = spmi_regulator_common_set_voltage,
1057 .get_voltage_sel = spmi_regulator_common_get_voltage,
1058 .map_voltage = spmi_regulator_common_map_voltage,
1059 .list_voltage = spmi_regulator_common_list_voltage,
1060 .set_mode = spmi_regulator_common_set_mode,
1061 .get_mode = spmi_regulator_common_get_mode,
1062 .set_load = spmi_regulator_common_set_load,
1063 .set_bypass = spmi_regulator_common_set_bypass,
1064 .get_bypass = spmi_regulator_common_get_bypass,
1065 .set_pull_down = spmi_regulator_common_set_pull_down,
1066 .set_soft_start = spmi_regulator_common_set_soft_start,
1067 };
1068
1069 static struct regulator_ops spmi_ln_ldo_ops = {
1070 .enable = spmi_regulator_common_enable,
1071 .disable = spmi_regulator_common_disable,
1072 .is_enabled = spmi_regulator_common_is_enabled,
1073 .set_voltage_sel = spmi_regulator_common_set_voltage,
1074 .get_voltage_sel = spmi_regulator_common_get_voltage,
1075 .map_voltage = spmi_regulator_common_map_voltage,
1076 .list_voltage = spmi_regulator_common_list_voltage,
1077 .set_bypass = spmi_regulator_common_set_bypass,
1078 .get_bypass = spmi_regulator_common_get_bypass,
1079 };
1080
1081 static struct regulator_ops spmi_vs_ops = {
1082 .enable = spmi_regulator_vs_enable,
1083 .disable = spmi_regulator_common_disable,
1084 .is_enabled = spmi_regulator_common_is_enabled,
1085 .set_pull_down = spmi_regulator_common_set_pull_down,
1086 .set_soft_start = spmi_regulator_common_set_soft_start,
1087 .set_over_current_protection = spmi_regulator_vs_ocp,
1088 };
1089
1090 static struct regulator_ops spmi_boost_ops = {
1091 .enable = spmi_regulator_common_enable,
1092 .disable = spmi_regulator_common_disable,
1093 .is_enabled = spmi_regulator_common_is_enabled,
1094 .set_voltage_sel = spmi_regulator_single_range_set_voltage,
1095 .get_voltage_sel = spmi_regulator_single_range_get_voltage,
1096 .map_voltage = spmi_regulator_single_map_voltage,
1097 .list_voltage = spmi_regulator_common_list_voltage,
1098 .set_input_current_limit = spmi_regulator_set_ilim,
1099 };
1100
1101 static struct regulator_ops spmi_ftsmps_ops = {
1102 .enable = spmi_regulator_common_enable,
1103 .disable = spmi_regulator_common_disable,
1104 .is_enabled = spmi_regulator_common_is_enabled,
1105 .set_voltage_sel = spmi_regulator_common_set_voltage,
1106 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
1107 .get_voltage_sel = spmi_regulator_common_get_voltage,
1108 .map_voltage = spmi_regulator_common_map_voltage,
1109 .list_voltage = spmi_regulator_common_list_voltage,
1110 .set_mode = spmi_regulator_common_set_mode,
1111 .get_mode = spmi_regulator_common_get_mode,
1112 .set_load = spmi_regulator_common_set_load,
1113 .set_pull_down = spmi_regulator_common_set_pull_down,
1114 };
1115
1116 static struct regulator_ops spmi_ult_lo_smps_ops = {
1117 .enable = spmi_regulator_common_enable,
1118 .disable = spmi_regulator_common_disable,
1119 .is_enabled = spmi_regulator_common_is_enabled,
1120 .set_voltage_sel = spmi_regulator_ult_lo_smps_set_voltage,
1121 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
1122 .get_voltage_sel = spmi_regulator_ult_lo_smps_get_voltage,
1123 .list_voltage = spmi_regulator_common_list_voltage,
1124 .set_mode = spmi_regulator_common_set_mode,
1125 .get_mode = spmi_regulator_common_get_mode,
1126 .set_load = spmi_regulator_common_set_load,
1127 .set_pull_down = spmi_regulator_common_set_pull_down,
1128 };
1129
1130 static struct regulator_ops spmi_ult_ho_smps_ops = {
1131 .enable = spmi_regulator_common_enable,
1132 .disable = spmi_regulator_common_disable,
1133 .is_enabled = spmi_regulator_common_is_enabled,
1134 .set_voltage_sel = spmi_regulator_single_range_set_voltage,
1135 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
1136 .get_voltage_sel = spmi_regulator_single_range_get_voltage,
1137 .map_voltage = spmi_regulator_single_map_voltage,
1138 .list_voltage = spmi_regulator_common_list_voltage,
1139 .set_mode = spmi_regulator_common_set_mode,
1140 .get_mode = spmi_regulator_common_get_mode,
1141 .set_load = spmi_regulator_common_set_load,
1142 .set_pull_down = spmi_regulator_common_set_pull_down,
1143 };
1144
1145 static struct regulator_ops spmi_ult_ldo_ops = {
1146 .enable = spmi_regulator_common_enable,
1147 .disable = spmi_regulator_common_disable,
1148 .is_enabled = spmi_regulator_common_is_enabled,
1149 .set_voltage_sel = spmi_regulator_single_range_set_voltage,
1150 .get_voltage_sel = spmi_regulator_single_range_get_voltage,
1151 .map_voltage = spmi_regulator_single_map_voltage,
1152 .list_voltage = spmi_regulator_common_list_voltage,
1153 .set_mode = spmi_regulator_common_set_mode,
1154 .get_mode = spmi_regulator_common_get_mode,
1155 .set_load = spmi_regulator_common_set_load,
1156 .set_bypass = spmi_regulator_common_set_bypass,
1157 .get_bypass = spmi_regulator_common_get_bypass,
1158 .set_pull_down = spmi_regulator_common_set_pull_down,
1159 .set_soft_start = spmi_regulator_common_set_soft_start,
1160 };
1161
1162 /* Maximum possible digital major revision value */
1163 #define INF 0xFF
1164
1165 static const struct spmi_regulator_mapping supported_regulators[] = {
1166 /* type subtype dig_min dig_max ltype ops setpoints hpm_min */
1167 SPMI_VREG(BUCK, GP_CTL, 0, INF, SMPS, smps, smps, 100000),
1168 SPMI_VREG(LDO, N300, 0, INF, LDO, ldo, nldo1, 10000),
1169 SPMI_VREG(LDO, N600, 0, 0, LDO, ldo, nldo2, 10000),
1170 SPMI_VREG(LDO, N1200, 0, 0, LDO, ldo, nldo2, 10000),
1171 SPMI_VREG(LDO, N600, 1, INF, LDO, ldo, nldo3, 10000),
1172 SPMI_VREG(LDO, N1200, 1, INF, LDO, ldo, nldo3, 10000),
1173 SPMI_VREG(LDO, N600_ST, 0, 0, LDO, ldo, nldo2, 10000),
1174 SPMI_VREG(LDO, N1200_ST, 0, 0, LDO, ldo, nldo2, 10000),
1175 SPMI_VREG(LDO, N600_ST, 1, INF, LDO, ldo, nldo3, 10000),
1176 SPMI_VREG(LDO, N1200_ST, 1, INF, LDO, ldo, nldo3, 10000),
1177 SPMI_VREG(LDO, P50, 0, INF, LDO, ldo, pldo, 5000),
1178 SPMI_VREG(LDO, P150, 0, INF, LDO, ldo, pldo, 10000),
1179 SPMI_VREG(LDO, P300, 0, INF, LDO, ldo, pldo, 10000),
1180 SPMI_VREG(LDO, P600, 0, INF, LDO, ldo, pldo, 10000),
1181 SPMI_VREG(LDO, P1200, 0, INF, LDO, ldo, pldo, 10000),
1182 SPMI_VREG(LDO, LN, 0, INF, LN_LDO, ln_ldo, ln_ldo, 0),
1183 SPMI_VREG(LDO, LV_P50, 0, INF, LDO, ldo, pldo, 5000),
1184 SPMI_VREG(LDO, LV_P150, 0, INF, LDO, ldo, pldo, 10000),
1185 SPMI_VREG(LDO, LV_P300, 0, INF, LDO, ldo, pldo, 10000),
1186 SPMI_VREG(LDO, LV_P600, 0, INF, LDO, ldo, pldo, 10000),
1187 SPMI_VREG(LDO, LV_P1200, 0, INF, LDO, ldo, pldo, 10000),
1188 SPMI_VREG_VS(LV100, 0, INF),
1189 SPMI_VREG_VS(LV300, 0, INF),
1190 SPMI_VREG_VS(MV300, 0, INF),
1191 SPMI_VREG_VS(MV500, 0, INF),
1192 SPMI_VREG_VS(HDMI, 0, INF),
1193 SPMI_VREG_VS(OTG, 0, INF),
1194 SPMI_VREG(BOOST, 5V_BOOST, 0, INF, BOOST, boost, boost, 0),
1195 SPMI_VREG(FTS, FTS_CTL, 0, INF, FTSMPS, ftsmps, ftsmps, 100000),
1196 SPMI_VREG(FTS, FTS2p5_CTL, 0, INF, FTSMPS, ftsmps, ftsmps2p5, 100000),
1197 SPMI_VREG(BOOST_BYP, BB_2A, 0, INF, BOOST_BYP, boost, boost_byp, 0),
1198 SPMI_VREG(ULT_BUCK, ULT_HF_CTL1, 0, INF, ULT_LO_SMPS, ult_lo_smps,
1199 ult_lo_smps, 100000),
1200 SPMI_VREG(ULT_BUCK, ULT_HF_CTL2, 0, INF, ULT_LO_SMPS, ult_lo_smps,
1201 ult_lo_smps, 100000),
1202 SPMI_VREG(ULT_BUCK, ULT_HF_CTL3, 0, INF, ULT_LO_SMPS, ult_lo_smps,
1203 ult_lo_smps, 100000),
1204 SPMI_VREG(ULT_BUCK, ULT_HF_CTL4, 0, INF, ULT_HO_SMPS, ult_ho_smps,
1205 ult_ho_smps, 100000),
1206 SPMI_VREG(ULT_LDO, N300_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
1207 SPMI_VREG(ULT_LDO, N600_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
1208 SPMI_VREG(ULT_LDO, N900_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
1209 SPMI_VREG(ULT_LDO, N1200_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
1210 SPMI_VREG(ULT_LDO, LV_P150, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1211 SPMI_VREG(ULT_LDO, LV_P300, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1212 SPMI_VREG(ULT_LDO, LV_P450, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1213 SPMI_VREG(ULT_LDO, P600, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1214 SPMI_VREG(ULT_LDO, P150, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1215 SPMI_VREG(ULT_LDO, P50, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 5000),
1216 };
1217
1218 static void spmi_calculate_num_voltages(struct spmi_voltage_set_points *points)
1219 {
1220 unsigned int n;
1221 struct spmi_voltage_range *range = points->range;
1222
1223 for (; range < points->range + points->count; range++) {
1224 n = 0;
1225 if (range->set_point_max_uV) {
1226 n = range->set_point_max_uV - range->set_point_min_uV;
1227 n = (n / range->step_uV) + 1;
1228 }
1229 range->n_voltages = n;
1230 points->n_voltages += n;
1231 }
1232 }
1233
1234 static int spmi_regulator_match(struct spmi_regulator *vreg, u16 force_type)
1235 {
1236 const struct spmi_regulator_mapping *mapping;
1237 int ret, i;
1238 u32 dig_major_rev;
1239 u8 version[SPMI_COMMON_REG_SUBTYPE - SPMI_COMMON_REG_DIG_MAJOR_REV + 1];
1240 u8 type, subtype;
1241
1242 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_DIG_MAJOR_REV, version,
1243 ARRAY_SIZE(version));
1244 if (ret) {
1245 dev_dbg(vreg->dev, "could not read version registers\n");
1246 return ret;
1247 }
1248 dig_major_rev = version[SPMI_COMMON_REG_DIG_MAJOR_REV
1249 - SPMI_COMMON_REG_DIG_MAJOR_REV];
1250 if (!force_type) {
1251 type = version[SPMI_COMMON_REG_TYPE -
1252 SPMI_COMMON_REG_DIG_MAJOR_REV];
1253 subtype = version[SPMI_COMMON_REG_SUBTYPE -
1254 SPMI_COMMON_REG_DIG_MAJOR_REV];
1255 } else {
1256 type = force_type >> 8;
1257 subtype = force_type;
1258 }
1259
1260 for (i = 0; i < ARRAY_SIZE(supported_regulators); i++) {
1261 mapping = &supported_regulators[i];
1262 if (mapping->type == type && mapping->subtype == subtype
1263 && mapping->revision_min <= dig_major_rev
1264 && mapping->revision_max >= dig_major_rev)
1265 goto found;
1266 }
1267
1268 dev_err(vreg->dev,
1269 "unsupported regulator: name=%s type=0x%02X, subtype=0x%02X, dig major rev=0x%02X\n",
1270 vreg->desc.name, type, subtype, dig_major_rev);
1271
1272 return -ENODEV;
1273
1274 found:
1275 vreg->logical_type = mapping->logical_type;
1276 vreg->set_points = mapping->set_points;
1277 vreg->hpm_min_load = mapping->hpm_min_load;
1278 vreg->desc.ops = mapping->ops;
1279
1280 if (mapping->set_points) {
1281 if (!mapping->set_points->n_voltages)
1282 spmi_calculate_num_voltages(mapping->set_points);
1283 vreg->desc.n_voltages = mapping->set_points->n_voltages;
1284 }
1285
1286 return 0;
1287 }
1288
1289 static int spmi_regulator_init_slew_rate(struct spmi_regulator *vreg)
1290 {
1291 int ret;
1292 u8 reg = 0;
1293 int step, delay, slew_rate, step_delay;
1294 const struct spmi_voltage_range *range;
1295
1296 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_STEP_CTRL, &reg, 1);
1297 if (ret) {
1298 dev_err(vreg->dev, "spmi read failed, ret=%d\n", ret);
1299 return ret;
1300 }
1301
1302 range = spmi_regulator_find_range(vreg);
1303 if (!range)
1304 return -EINVAL;
1305
1306 switch (vreg->logical_type) {
1307 case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS:
1308 step_delay = SPMI_FTSMPS_STEP_DELAY;
1309 break;
1310 default:
1311 step_delay = SPMI_DEFAULT_STEP_DELAY;
1312 break;
1313 }
1314
1315 step = reg & SPMI_FTSMPS_STEP_CTRL_STEP_MASK;
1316 step >>= SPMI_FTSMPS_STEP_CTRL_STEP_SHIFT;
1317
1318 delay = reg & SPMI_FTSMPS_STEP_CTRL_DELAY_MASK;
1319 delay >>= SPMI_FTSMPS_STEP_CTRL_DELAY_SHIFT;
1320
1321 /* slew_rate has units of uV/us */
1322 slew_rate = SPMI_FTSMPS_CLOCK_RATE * range->step_uV * (1 << step);
1323 slew_rate /= 1000 * (step_delay << delay);
1324 slew_rate *= SPMI_FTSMPS_STEP_MARGIN_NUM;
1325 slew_rate /= SPMI_FTSMPS_STEP_MARGIN_DEN;
1326
1327 /* Ensure that the slew rate is greater than 0 */
1328 vreg->slew_rate = max(slew_rate, 1);
1329
1330 return ret;
1331 }
1332
1333 static int spmi_regulator_init_registers(struct spmi_regulator *vreg,
1334 const struct spmi_regulator_init_data *data)
1335 {
1336 int ret;
1337 enum spmi_regulator_logical_type type;
1338 u8 ctrl_reg[8], reg, mask;
1339
1340 type = vreg->logical_type;
1341
1342 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8);
1343 if (ret)
1344 return ret;
1345
1346 /* Set up enable pin control. */
1347 if ((type == SPMI_REGULATOR_LOGICAL_TYPE_SMPS
1348 || type == SPMI_REGULATOR_LOGICAL_TYPE_LDO
1349 || type == SPMI_REGULATOR_LOGICAL_TYPE_VS)
1350 && !(data->pin_ctrl_enable
1351 & SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT)) {
1352 ctrl_reg[SPMI_COMMON_IDX_ENABLE] &=
1353 ~SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK;
1354 ctrl_reg[SPMI_COMMON_IDX_ENABLE] |=
1355 data->pin_ctrl_enable & SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK;
1356 }
1357
1358 /* Set up mode pin control. */
1359 if ((type == SPMI_REGULATOR_LOGICAL_TYPE_SMPS
1360 || type == SPMI_REGULATOR_LOGICAL_TYPE_LDO)
1361 && !(data->pin_ctrl_hpm
1362 & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) {
1363 ctrl_reg[SPMI_COMMON_IDX_MODE] &=
1364 ~SPMI_COMMON_MODE_FOLLOW_ALL_MASK;
1365 ctrl_reg[SPMI_COMMON_IDX_MODE] |=
1366 data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_ALL_MASK;
1367 }
1368
1369 if (type == SPMI_REGULATOR_LOGICAL_TYPE_VS
1370 && !(data->pin_ctrl_hpm & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) {
1371 ctrl_reg[SPMI_COMMON_IDX_MODE] &=
1372 ~SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
1373 ctrl_reg[SPMI_COMMON_IDX_MODE] |=
1374 data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
1375 }
1376
1377 if ((type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS
1378 || type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS
1379 || type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO)
1380 && !(data->pin_ctrl_hpm
1381 & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) {
1382 ctrl_reg[SPMI_COMMON_IDX_MODE] &=
1383 ~SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
1384 ctrl_reg[SPMI_COMMON_IDX_MODE] |=
1385 data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
1386 }
1387
1388 /* Write back any control register values that were modified. */
1389 ret = spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8);
1390 if (ret)
1391 return ret;
1392
1393 /* Set soft start strength and over current protection for VS. */
1394 if (type == SPMI_REGULATOR_LOGICAL_TYPE_VS) {
1395 if (data->vs_soft_start_strength
1396 != SPMI_VS_SOFT_START_STR_HW_DEFAULT) {
1397 reg = data->vs_soft_start_strength
1398 & SPMI_VS_SOFT_START_SEL_MASK;
1399 mask = SPMI_VS_SOFT_START_SEL_MASK;
1400 return spmi_vreg_update_bits(vreg,
1401 SPMI_VS_REG_SOFT_START,
1402 reg, mask);
1403 }
1404 }
1405
1406 return 0;
1407 }
1408
1409 static void spmi_regulator_get_dt_config(struct spmi_regulator *vreg,
1410 struct device_node *node, struct spmi_regulator_init_data *data)
1411 {
1412 /*
1413 * Initialize configuration parameters to use hardware default in case
1414 * no value is specified via device tree.
1415 */
1416 data->pin_ctrl_enable = SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT;
1417 data->pin_ctrl_hpm = SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT;
1418 data->vs_soft_start_strength = SPMI_VS_SOFT_START_STR_HW_DEFAULT;
1419
1420 /* These bindings are optional, so it is okay if they aren't found. */
1421 of_property_read_u32(node, "qcom,ocp-max-retries",
1422 &vreg->ocp_max_retries);
1423 of_property_read_u32(node, "qcom,ocp-retry-delay",
1424 &vreg->ocp_retry_delay_ms);
1425 of_property_read_u32(node, "qcom,pin-ctrl-enable",
1426 &data->pin_ctrl_enable);
1427 of_property_read_u32(node, "qcom,pin-ctrl-hpm", &data->pin_ctrl_hpm);
1428 of_property_read_u32(node, "qcom,vs-soft-start-strength",
1429 &data->vs_soft_start_strength);
1430 }
1431
1432 static unsigned int spmi_regulator_of_map_mode(unsigned int mode)
1433 {
1434 if (mode == 1)
1435 return REGULATOR_MODE_NORMAL;
1436 if (mode == 2)
1437 return REGULATOR_MODE_FAST;
1438
1439 return REGULATOR_MODE_IDLE;
1440 }
1441
1442 static int spmi_regulator_of_parse(struct device_node *node,
1443 const struct regulator_desc *desc,
1444 struct regulator_config *config)
1445 {
1446 struct spmi_regulator_init_data data = { };
1447 struct spmi_regulator *vreg = config->driver_data;
1448 struct device *dev = config->dev;
1449 int ret;
1450
1451 spmi_regulator_get_dt_config(vreg, node, &data);
1452
1453 if (!vreg->ocp_max_retries)
1454 vreg->ocp_max_retries = SPMI_VS_OCP_DEFAULT_MAX_RETRIES;
1455 if (!vreg->ocp_retry_delay_ms)
1456 vreg->ocp_retry_delay_ms = SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS;
1457
1458 ret = spmi_regulator_init_registers(vreg, &data);
1459 if (ret) {
1460 dev_err(dev, "common initialization failed, ret=%d\n", ret);
1461 return ret;
1462 }
1463
1464 switch (vreg->logical_type) {
1465 case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS:
1466 case SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS:
1467 case SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS:
1468 case SPMI_REGULATOR_LOGICAL_TYPE_SMPS:
1469 ret = spmi_regulator_init_slew_rate(vreg);
1470 if (ret)
1471 return ret;
1472 default:
1473 break;
1474 }
1475
1476 if (vreg->logical_type != SPMI_REGULATOR_LOGICAL_TYPE_VS)
1477 vreg->ocp_irq = 0;
1478
1479 if (vreg->ocp_irq) {
1480 ret = devm_request_irq(dev, vreg->ocp_irq,
1481 spmi_regulator_vs_ocp_isr, IRQF_TRIGGER_RISING, "ocp",
1482 vreg);
1483 if (ret < 0) {
1484 dev_err(dev, "failed to request irq %d, ret=%d\n",
1485 vreg->ocp_irq, ret);
1486 return ret;
1487 }
1488
1489 INIT_DELAYED_WORK(&vreg->ocp_work, spmi_regulator_vs_ocp_work);
1490 }
1491
1492 return 0;
1493 }
1494
1495 static const struct spmi_regulator_data pm8941_regulators[] = {
1496 { "s1", 0x1400, "vdd_s1", },
1497 { "s2", 0x1700, "vdd_s2", },
1498 { "s3", 0x1a00, "vdd_s3", },
1499 { "l1", 0x4000, "vdd_l1_l3", },
1500 { "l2", 0x4100, "vdd_l2_lvs_1_2_3", },
1501 { "l3", 0x4200, "vdd_l1_l3", },
1502 { "l4", 0x4300, "vdd_l4_l11", },
1503 { "l5", 0x4400, "vdd_l5_l7", NULL, 0x0410 },
1504 { "l6", 0x4500, "vdd_l6_l12_l14_l15", },
1505 { "l7", 0x4600, "vdd_l5_l7", NULL, 0x0410 },
1506 { "l8", 0x4700, "vdd_l8_l16_l18_19", },
1507 { "l9", 0x4800, "vdd_l9_l10_l17_l22", },
1508 { "l10", 0x4900, "vdd_l9_l10_l17_l22", },
1509 { "l11", 0x4a00, "vdd_l4_l11", },
1510 { "l12", 0x4b00, "vdd_l6_l12_l14_l15", },
1511 { "l13", 0x4c00, "vdd_l13_l20_l23_l24", },
1512 { "l14", 0x4d00, "vdd_l6_l12_l14_l15", },
1513 { "l15", 0x4e00, "vdd_l6_l12_l14_l15", },
1514 { "l16", 0x4f00, "vdd_l8_l16_l18_19", },
1515 { "l17", 0x5000, "vdd_l9_l10_l17_l22", },
1516 { "l18", 0x5100, "vdd_l8_l16_l18_19", },
1517 { "l19", 0x5200, "vdd_l8_l16_l18_19", },
1518 { "l20", 0x5300, "vdd_l13_l20_l23_l24", },
1519 { "l21", 0x5400, "vdd_l21", },
1520 { "l22", 0x5500, "vdd_l9_l10_l17_l22", },
1521 { "l23", 0x5600, "vdd_l13_l20_l23_l24", },
1522 { "l24", 0x5700, "vdd_l13_l20_l23_l24", },
1523 { "lvs1", 0x8000, "vdd_l2_lvs_1_2_3", },
1524 { "lvs2", 0x8100, "vdd_l2_lvs_1_2_3", },
1525 { "lvs3", 0x8200, "vdd_l2_lvs_1_2_3", },
1526 { "mvs1", 0x8300, "vin_5vs", },
1527 { "mvs2", 0x8400, "vin_5vs", },
1528 { }
1529 };
1530
1531 static const struct spmi_regulator_data pm8841_regulators[] = {
1532 { "s1", 0x1400, "vdd_s1", },
1533 { "s2", 0x1700, "vdd_s2", NULL, 0x1c08 },
1534 { "s3", 0x1a00, "vdd_s3", },
1535 { "s4", 0x1d00, "vdd_s4", NULL, 0x1c08 },
1536 { "s5", 0x2000, "vdd_s5", NULL, 0x1c08 },
1537 { "s6", 0x2300, "vdd_s6", NULL, 0x1c08 },
1538 { "s7", 0x2600, "vdd_s7", NULL, 0x1c08 },
1539 { "s8", 0x2900, "vdd_s8", NULL, 0x1c08 },
1540 { }
1541 };
1542
1543 static const struct spmi_regulator_data pm8916_regulators[] = {
1544 { "s1", 0x1400, "vdd_s1", },
1545 { "s2", 0x1700, "vdd_s2", },
1546 { "s3", 0x1a00, "vdd_s3", },
1547 { "s4", 0x1d00, "vdd_s4", },
1548 { "l1", 0x4000, "vdd_l1_l3", },
1549 { "l2", 0x4100, "vdd_l2", },
1550 { "l3", 0x4200, "vdd_l1_l3", },
1551 { "l4", 0x4300, "vdd_l4_l5_l6", },
1552 { "l5", 0x4400, "vdd_l4_l5_l6", },
1553 { "l6", 0x4500, "vdd_l4_l5_l6", },
1554 { "l7", 0x4600, "vdd_l7", },
1555 { "l8", 0x4700, "vdd_l8_l11_l14_l15_l16", },
1556 { "l9", 0x4800, "vdd_l9_l10_l12_l13_l17_l18", },
1557 { "l10", 0x4900, "vdd_l9_l10_l12_l13_l17_l18", },
1558 { "l11", 0x4a00, "vdd_l8_l11_l14_l15_l16", },
1559 { "l12", 0x4b00, "vdd_l9_l10_l12_l13_l17_l18", },
1560 { "l13", 0x4c00, "vdd_l9_l10_l12_l13_l17_l18", },
1561 { "l14", 0x4d00, "vdd_l8_l11_l14_l15_l16", },
1562 { "l15", 0x4e00, "vdd_l8_l11_l14_l15_l16", },
1563 { "l16", 0x4f00, "vdd_l8_l11_l14_l15_l16", },
1564 { "l17", 0x5000, "vdd_l9_l10_l12_l13_l17_l18", },
1565 { "l18", 0x5100, "vdd_l9_l10_l12_l13_l17_l18", },
1566 { }
1567 };
1568
1569 static const struct spmi_regulator_data pm8994_regulators[] = {
1570 { "s1", 0x1400, "vdd_s1", },
1571 { "s2", 0x1700, "vdd_s2", },
1572 { "s3", 0x1a00, "vdd_s3", },
1573 { "s4", 0x1d00, "vdd_s4", },
1574 { "s5", 0x2000, "vdd_s5", },
1575 { "s6", 0x2300, "vdd_s6", },
1576 { "s7", 0x2600, "vdd_s7", },
1577 { "s8", 0x2900, "vdd_s8", },
1578 { "s9", 0x2c00, "vdd_s9", },
1579 { "s10", 0x2f00, "vdd_s10", },
1580 { "s11", 0x3200, "vdd_s11", },
1581 { "s12", 0x3500, "vdd_s12", },
1582 { "l1", 0x4000, "vdd_l1", },
1583 { "l2", 0x4100, "vdd_l2_l26_l28", },
1584 { "l3", 0x4200, "vdd_l3_l11", },
1585 { "l4", 0x4300, "vdd_l4_l27_l31", },
1586 { "l5", 0x4400, "vdd_l5_l7", },
1587 { "l6", 0x4500, "vdd_l6_l12_l32", },
1588 { "l7", 0x4600, "vdd_l5_l7", },
1589 { "l8", 0x4700, "vdd_l8_l16_l30", },
1590 { "l9", 0x4800, "vdd_l9_l10_l18_l22", },
1591 { "l10", 0x4900, "vdd_l9_l10_l18_l22", },
1592 { "l11", 0x4a00, "vdd_l3_l11", },
1593 { "l12", 0x4b00, "vdd_l6_l12_l32", },
1594 { "l13", 0x4c00, "vdd_l13_l19_l23_l24", },
1595 { "l14", 0x4d00, "vdd_l14_l15", },
1596 { "l15", 0x4e00, "vdd_l14_l15", },
1597 { "l16", 0x4f00, "vdd_l8_l16_l30", },
1598 { "l17", 0x5000, "vdd_l17_l29", },
1599 { "l18", 0x5100, "vdd_l9_l10_l18_l22", },
1600 { "l19", 0x5200, "vdd_l13_l19_l23_l24", },
1601 { "l20", 0x5300, "vdd_l20_l21", },
1602 { "l21", 0x5400, "vdd_l20_l21", },
1603 { "l22", 0x5500, "vdd_l9_l10_l18_l22", },
1604 { "l23", 0x5600, "vdd_l13_l19_l23_l24", },
1605 { "l24", 0x5700, "vdd_l13_l19_l23_l24", },
1606 { "l25", 0x5800, "vdd_l25", },
1607 { "l26", 0x5900, "vdd_l2_l26_l28", },
1608 { "l27", 0x5a00, "vdd_l4_l27_l31", },
1609 { "l28", 0x5b00, "vdd_l2_l26_l28", },
1610 { "l29", 0x5c00, "vdd_l17_l29", },
1611 { "l30", 0x5d00, "vdd_l8_l16_l30", },
1612 { "l31", 0x5e00, "vdd_l4_l27_l31", },
1613 { "l32", 0x5f00, "vdd_l6_l12_l32", },
1614 { "lvs1", 0x8000, "vdd_lvs_1_2", },
1615 { "lvs2", 0x8100, "vdd_lvs_1_2", },
1616 { }
1617 };
1618
1619 static const struct of_device_id qcom_spmi_regulator_match[] = {
1620 { .compatible = "qcom,pm8841-regulators", .data = &pm8841_regulators },
1621 { .compatible = "qcom,pm8916-regulators", .data = &pm8916_regulators },
1622 { .compatible = "qcom,pm8941-regulators", .data = &pm8941_regulators },
1623 { .compatible = "qcom,pm8994-regulators", .data = &pm8994_regulators },
1624 { }
1625 };
1626 MODULE_DEVICE_TABLE(of, qcom_spmi_regulator_match);
1627
1628 static int qcom_spmi_regulator_probe(struct platform_device *pdev)
1629 {
1630 const struct spmi_regulator_data *reg;
1631 const struct of_device_id *match;
1632 struct regulator_config config = { };
1633 struct regulator_dev *rdev;
1634 struct spmi_regulator *vreg;
1635 struct regmap *regmap;
1636 const char *name;
1637 struct device *dev = &pdev->dev;
1638 int ret;
1639 struct list_head *vreg_list;
1640
1641 vreg_list = devm_kzalloc(dev, sizeof(*vreg_list), GFP_KERNEL);
1642 if (!vreg_list)
1643 return -ENOMEM;
1644 INIT_LIST_HEAD(vreg_list);
1645 platform_set_drvdata(pdev, vreg_list);
1646
1647 regmap = dev_get_regmap(dev->parent, NULL);
1648 if (!regmap)
1649 return -ENODEV;
1650
1651 match = of_match_device(qcom_spmi_regulator_match, &pdev->dev);
1652 if (!match)
1653 return -ENODEV;
1654
1655 for (reg = match->data; reg->name; reg++) {
1656 vreg = devm_kzalloc(dev, sizeof(*vreg), GFP_KERNEL);
1657 if (!vreg)
1658 return -ENOMEM;
1659
1660 vreg->dev = dev;
1661 vreg->base = reg->base;
1662 vreg->regmap = regmap;
1663
1664 if (reg->ocp) {
1665 vreg->ocp_irq = platform_get_irq_byname(pdev, reg->ocp);
1666 if (vreg->ocp_irq < 0) {
1667 ret = vreg->ocp_irq;
1668 goto err;
1669 }
1670 }
1671
1672 vreg->desc.id = -1;
1673 vreg->desc.owner = THIS_MODULE;
1674 vreg->desc.type = REGULATOR_VOLTAGE;
1675 vreg->desc.name = name = reg->name;
1676 vreg->desc.supply_name = reg->supply;
1677 vreg->desc.of_match = reg->name;
1678 vreg->desc.of_parse_cb = spmi_regulator_of_parse;
1679 vreg->desc.of_map_mode = spmi_regulator_of_map_mode;
1680
1681 ret = spmi_regulator_match(vreg, reg->force_type);
1682 if (ret)
1683 continue;
1684
1685 config.dev = dev;
1686 config.driver_data = vreg;
1687 rdev = devm_regulator_register(dev, &vreg->desc, &config);
1688 if (IS_ERR(rdev)) {
1689 dev_err(dev, "failed to register %s\n", name);
1690 ret = PTR_ERR(rdev);
1691 goto err;
1692 }
1693
1694 INIT_LIST_HEAD(&vreg->node);
1695 list_add(&vreg->node, vreg_list);
1696 }
1697
1698 return 0;
1699
1700 err:
1701 list_for_each_entry(vreg, vreg_list, node)
1702 if (vreg->ocp_irq)
1703 cancel_delayed_work_sync(&vreg->ocp_work);
1704 return ret;
1705 }
1706
1707 static int qcom_spmi_regulator_remove(struct platform_device *pdev)
1708 {
1709 struct spmi_regulator *vreg;
1710 struct list_head *vreg_list = platform_get_drvdata(pdev);
1711
1712 list_for_each_entry(vreg, vreg_list, node)
1713 if (vreg->ocp_irq)
1714 cancel_delayed_work_sync(&vreg->ocp_work);
1715
1716 return 0;
1717 }
1718
1719 static struct platform_driver qcom_spmi_regulator_driver = {
1720 .driver = {
1721 .name = "qcom-spmi-regulator",
1722 .of_match_table = qcom_spmi_regulator_match,
1723 },
1724 .probe = qcom_spmi_regulator_probe,
1725 .remove = qcom_spmi_regulator_remove,
1726 };
1727 module_platform_driver(qcom_spmi_regulator_driver);
1728
1729 MODULE_DESCRIPTION("Qualcomm SPMI PMIC regulator driver");
1730 MODULE_LICENSE("GPL v2");
1731 MODULE_ALIAS("platform:qcom-spmi-regulator");
Linux with added FPC-III support