?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
khugepaged: ignore pmd tables with THP mapped with ptes
[linux/fpc-iii.git] / drivers / regulator / qcom_spmi-regulator.c
blob88a5dc88badc7e0c72b1deb770dd1128a8cfa661
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
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, &reg, 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
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, &reg, 1);
531 }
532
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 */
579 *voltage_sel = DIV_ROUND_UP(uV - range->min_uV, range->step_uV);
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
654 && uV <= vreg->set_points->range[i].set_point_max_uV) {
655 *selector +=
656 (uV - vreg->set_points->range[i].set_point_min_uV)
657 / vreg->set_points->range[i].step_uV;
658 break;
659 }
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
785 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_VOLTAGE_SET,
786 voltage_sel, 0xff);
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++) {
818 if (selector < vreg->set_points->range[i].n_voltages) {
819 uV = selector * vreg->set_points->range[i].step_uV
820 + vreg->set_points->range[i].set_point_min_uV;
821 break;
822 }
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, &reg, 1);
862
863 if (reg & SPMI_COMMON_MODE_HPM_MASK)
864 return REGULATOR_MODE_NORMAL;
865
866 if (reg & SPMI_COMMON_MODE_AUTO_MASK)
867 return REGULATOR_MODE_FAST;
868
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);
876 u8 mask = SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK;
877 u8 val = 0;
878
879 if (mode == REGULATOR_MODE_NORMAL)
880 val = SPMI_COMMON_MODE_HPM_MASK;
881 else if (mode == REGULATOR_MODE_FAST)
882 val = SPMI_COMMON_MODE_AUTO_MASK;
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,
1052 .set_over_current_protection = spmi_regulator_vs_ocp,
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;
1186 n = (n / range->step_uV) + 1;
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, &reg, 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
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
1382 static unsigned int spmi_regulator_of_map_mode(unsigned int mode)
1383 {
1384 if (mode == 1)
1385 return REGULATOR_MODE_NORMAL;
1386 if (mode == 2)
1387 return REGULATOR_MODE_FAST;
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 {
1396 struct spmi_regulator_init_data data = { };
1397 struct spmi_regulator *vreg = config->driver_data;
1398 struct device *dev = config->dev;
1399 int ret;
1400
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 }
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
1513 static const struct of_device_id qcom_spmi_regulator_match[] = {
1514 { .compatible = "qcom,pm8841-regulators", .data = &pm8841_regulators },
1515 { .compatible = "qcom,pm8916-regulators", .data = &pm8916_regulators },
1516 { .compatible = "qcom,pm8941-regulators", .data = &pm8941_regulators },
1517 { }
1518 };
1519 MODULE_DEVICE_TABLE(of, qcom_spmi_regulator_match);
1520
1521 static int qcom_spmi_regulator_probe(struct platform_device *pdev)
1522 {
1523 const struct spmi_regulator_data *reg;
1524 const struct of_device_id *match;
1525 struct regulator_config config = { };
1526 struct regulator_dev *rdev;
1527 struct spmi_regulator *vreg;
1528 struct regmap *regmap;
1529 const char *name;
1530 struct device *dev = &pdev->dev;
1531 int ret;
1532 struct list_head *vreg_list;
1533
1534 vreg_list = devm_kzalloc(dev, sizeof(*vreg_list), GFP_KERNEL);
1535 if (!vreg_list)
1536 return -ENOMEM;
1537 INIT_LIST_HEAD(vreg_list);
1538 platform_set_drvdata(pdev, vreg_list);
1539
1540 regmap = dev_get_regmap(dev->parent, NULL);
1541 if (!regmap)
1542 return -ENODEV;
1543
1544 match = of_match_device(qcom_spmi_regulator_match, &pdev->dev);
1545 if (!match)
1546 return -ENODEV;
1547
1548 for (reg = match->data; reg->name; reg++) {
1549 vreg = devm_kzalloc(dev, sizeof(*vreg), GFP_KERNEL);
1550 if (!vreg)
1551 return -ENOMEM;
1552
1553 vreg->dev = dev;
1554 vreg->base = reg->base;
1555 vreg->regmap = regmap;
1556
1557 if (reg->ocp) {
1558 vreg->ocp_irq = platform_get_irq_byname(pdev, reg->ocp);
1559 if (vreg->ocp_irq < 0) {
1560 ret = vreg->ocp_irq;
1561 goto err;
1562 }
1563 }
1564
1565 vreg->desc.id = -1;
1566 vreg->desc.owner = THIS_MODULE;
1567 vreg->desc.type = REGULATOR_VOLTAGE;
1568 vreg->desc.name = name = reg->name;
1569 vreg->desc.supply_name = reg->supply;
1570 vreg->desc.of_match = reg->name;
1571 vreg->desc.of_parse_cb = spmi_regulator_of_parse;
1572 vreg->desc.of_map_mode = spmi_regulator_of_map_mode;
1573
1574 ret = spmi_regulator_match(vreg, reg->force_type);
1575 if (ret)
1576 goto err;
1577
1578 config.dev = dev;
1579 config.driver_data = vreg;
1580 rdev = devm_regulator_register(dev, &vreg->desc, &config);
1581 if (IS_ERR(rdev)) {
1582 dev_err(dev, "failed to register %s\n", name);
1583 ret = PTR_ERR(rdev);
1584 goto err;
1585 }
1586
1587 INIT_LIST_HEAD(&vreg->node);
1588 list_add(&vreg->node, vreg_list);
1589 }
1590
1591 return 0;
1592
1593 err:
1594 list_for_each_entry(vreg, vreg_list, node)
1595 if (vreg->ocp_irq)
1596 cancel_delayed_work_sync(&vreg->ocp_work);
1597 return ret;
1598 }
1599
1600 static int qcom_spmi_regulator_remove(struct platform_device *pdev)
1601 {
1602 struct spmi_regulator *vreg;
1603 struct list_head *vreg_list = platform_get_drvdata(pdev);
1604
1605 list_for_each_entry(vreg, vreg_list, node)
1606 if (vreg->ocp_irq)
1607 cancel_delayed_work_sync(&vreg->ocp_work);
1608
1609 return 0;
1610 }
1611
1612 static struct platform_driver qcom_spmi_regulator_driver = {
1613 .driver = {
1614 .name = "qcom-spmi-regulator",
1615 .of_match_table = qcom_spmi_regulator_match,
1616 },
1617 .probe = qcom_spmi_regulator_probe,
1618 .remove = qcom_spmi_regulator_remove,
1619 };
1620 module_platform_driver(qcom_spmi_regulator_driver);
1621
1622 MODULE_DESCRIPTION("Qualcomm SPMI PMIC regulator driver");
1623 MODULE_LICENSE("GPL v2");
1624 MODULE_ALIAS("platform:qcom-spmi-regulator");
Linux with added FPC-III support