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dm writecache: fix incorrect flush sequence when doing SSD mode commit
[linux/fpc-iii.git] / drivers / regulator / qcom_spmi-regulator.c
blob95737e4dd6bbd3d21ec3e55e30f03abfd1d551c8
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2012-2015, The Linux Foundation. All rights reserved.
4 */
5
6 #include <linux/module.h>
7 #include <linux/delay.h>
8 #include <linux/err.h>
9 #include <linux/kernel.h>
10 #include <linux/interrupt.h>
11 #include <linux/bitops.h>
12 #include <linux/slab.h>
13 #include <linux/of.h>
14 #include <linux/of_device.h>
15 #include <linux/platform_device.h>
16 #include <linux/ktime.h>
17 #include <linux/regulator/driver.h>
18 #include <linux/regmap.h>
19 #include <linux/list.h>
20 #include <linux/mfd/syscon.h>
21 #include <linux/io.h>
22
23 /* Pin control enable input pins. */
24 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_NONE 0x00
25 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN0 0x01
26 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN1 0x02
27 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN2 0x04
28 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN3 0x08
29 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT 0x10
30
31 /* Pin control high power mode input pins. */
32 #define SPMI_REGULATOR_PIN_CTRL_HPM_NONE 0x00
33 #define SPMI_REGULATOR_PIN_CTRL_HPM_EN0 0x01
34 #define SPMI_REGULATOR_PIN_CTRL_HPM_EN1 0x02
35 #define SPMI_REGULATOR_PIN_CTRL_HPM_EN2 0x04
36 #define SPMI_REGULATOR_PIN_CTRL_HPM_EN3 0x08
37 #define SPMI_REGULATOR_PIN_CTRL_HPM_SLEEP_B 0x10
38 #define SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT 0x20
39
40 /*
41 * Used with enable parameters to specify that hardware default register values
42 * should be left unaltered.
43 */
44 #define SPMI_REGULATOR_USE_HW_DEFAULT 2
45
46 /* Soft start strength of a voltage switch type regulator */
47 enum spmi_vs_soft_start_str {
48 SPMI_VS_SOFT_START_STR_0P05_UA = 0,
49 SPMI_VS_SOFT_START_STR_0P25_UA,
50 SPMI_VS_SOFT_START_STR_0P55_UA,
51 SPMI_VS_SOFT_START_STR_0P75_UA,
52 SPMI_VS_SOFT_START_STR_HW_DEFAULT,
53 };
54
55 /**
56 * struct spmi_regulator_init_data - spmi-regulator initialization data
57 * @pin_ctrl_enable: Bit mask specifying which hardware pins should be
58 * used to enable the regulator, if any
59 * Value should be an ORing of
60 * SPMI_REGULATOR_PIN_CTRL_ENABLE_* constants. If
61 * the bit specified by
62 * SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT is
63 * set, then pin control enable hardware registers
64 * will not be modified.
65 * @pin_ctrl_hpm: Bit mask specifying which hardware pins should be
66 * used to force the regulator into high power
67 * mode, if any
68 * Value should be an ORing of
69 * SPMI_REGULATOR_PIN_CTRL_HPM_* constants. If
70 * the bit specified by
71 * SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT is
72 * set, then pin control mode hardware registers
73 * will not be modified.
74 * @vs_soft_start_strength: This parameter sets the soft start strength for
75 * voltage switch type regulators. Its value
76 * should be one of SPMI_VS_SOFT_START_STR_*. If
77 * its value is SPMI_VS_SOFT_START_STR_HW_DEFAULT,
78 * then the soft start strength will be left at its
79 * default hardware value.
80 */
81 struct spmi_regulator_init_data {
82 unsigned pin_ctrl_enable;
83 unsigned pin_ctrl_hpm;
84 enum spmi_vs_soft_start_str vs_soft_start_strength;
85 };
86
87 /* These types correspond to unique register layouts. */
88 enum spmi_regulator_logical_type {
89 SPMI_REGULATOR_LOGICAL_TYPE_SMPS,
90 SPMI_REGULATOR_LOGICAL_TYPE_LDO,
91 SPMI_REGULATOR_LOGICAL_TYPE_VS,
92 SPMI_REGULATOR_LOGICAL_TYPE_BOOST,
93 SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS,
94 SPMI_REGULATOR_LOGICAL_TYPE_BOOST_BYP,
95 SPMI_REGULATOR_LOGICAL_TYPE_LN_LDO,
96 SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS,
97 SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS,
98 SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO,
99 SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS426,
100 SPMI_REGULATOR_LOGICAL_TYPE_HFS430,
101 };
102
103 enum spmi_regulator_type {
104 SPMI_REGULATOR_TYPE_BUCK = 0x03,
105 SPMI_REGULATOR_TYPE_LDO = 0x04,
106 SPMI_REGULATOR_TYPE_VS = 0x05,
107 SPMI_REGULATOR_TYPE_BOOST = 0x1b,
108 SPMI_REGULATOR_TYPE_FTS = 0x1c,
109 SPMI_REGULATOR_TYPE_BOOST_BYP = 0x1f,
110 SPMI_REGULATOR_TYPE_ULT_LDO = 0x21,
111 SPMI_REGULATOR_TYPE_ULT_BUCK = 0x22,
112 };
113
114 enum spmi_regulator_subtype {
115 SPMI_REGULATOR_SUBTYPE_GP_CTL = 0x08,
116 SPMI_REGULATOR_SUBTYPE_RF_CTL = 0x09,
117 SPMI_REGULATOR_SUBTYPE_N50 = 0x01,
118 SPMI_REGULATOR_SUBTYPE_N150 = 0x02,
119 SPMI_REGULATOR_SUBTYPE_N300 = 0x03,
120 SPMI_REGULATOR_SUBTYPE_N600 = 0x04,
121 SPMI_REGULATOR_SUBTYPE_N1200 = 0x05,
122 SPMI_REGULATOR_SUBTYPE_N600_ST = 0x06,
123 SPMI_REGULATOR_SUBTYPE_N1200_ST = 0x07,
124 SPMI_REGULATOR_SUBTYPE_N900_ST = 0x14,
125 SPMI_REGULATOR_SUBTYPE_N300_ST = 0x15,
126 SPMI_REGULATOR_SUBTYPE_P50 = 0x08,
127 SPMI_REGULATOR_SUBTYPE_P150 = 0x09,
128 SPMI_REGULATOR_SUBTYPE_P300 = 0x0a,
129 SPMI_REGULATOR_SUBTYPE_P600 = 0x0b,
130 SPMI_REGULATOR_SUBTYPE_P1200 = 0x0c,
131 SPMI_REGULATOR_SUBTYPE_LN = 0x10,
132 SPMI_REGULATOR_SUBTYPE_LV_P50 = 0x28,
133 SPMI_REGULATOR_SUBTYPE_LV_P150 = 0x29,
134 SPMI_REGULATOR_SUBTYPE_LV_P300 = 0x2a,
135 SPMI_REGULATOR_SUBTYPE_LV_P600 = 0x2b,
136 SPMI_REGULATOR_SUBTYPE_LV_P1200 = 0x2c,
137 SPMI_REGULATOR_SUBTYPE_LV_P450 = 0x2d,
138 SPMI_REGULATOR_SUBTYPE_LV100 = 0x01,
139 SPMI_REGULATOR_SUBTYPE_LV300 = 0x02,
140 SPMI_REGULATOR_SUBTYPE_MV300 = 0x08,
141 SPMI_REGULATOR_SUBTYPE_MV500 = 0x09,
142 SPMI_REGULATOR_SUBTYPE_HDMI = 0x10,
143 SPMI_REGULATOR_SUBTYPE_OTG = 0x11,
144 SPMI_REGULATOR_SUBTYPE_5V_BOOST = 0x01,
145 SPMI_REGULATOR_SUBTYPE_FTS_CTL = 0x08,
146 SPMI_REGULATOR_SUBTYPE_FTS2p5_CTL = 0x09,
147 SPMI_REGULATOR_SUBTYPE_FTS426_CTL = 0x0a,
148 SPMI_REGULATOR_SUBTYPE_BB_2A = 0x01,
149 SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL1 = 0x0d,
150 SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL2 = 0x0e,
151 SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL3 = 0x0f,
152 SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL4 = 0x10,
153 SPMI_REGULATOR_SUBTYPE_HFS430 = 0x0a,
154 };
155
156 enum spmi_common_regulator_registers {
157 SPMI_COMMON_REG_DIG_MAJOR_REV = 0x01,
158 SPMI_COMMON_REG_TYPE = 0x04,
159 SPMI_COMMON_REG_SUBTYPE = 0x05,
160 SPMI_COMMON_REG_VOLTAGE_RANGE = 0x40,
161 SPMI_COMMON_REG_VOLTAGE_SET = 0x41,
162 SPMI_COMMON_REG_MODE = 0x45,
163 SPMI_COMMON_REG_ENABLE = 0x46,
164 SPMI_COMMON_REG_PULL_DOWN = 0x48,
165 SPMI_COMMON_REG_SOFT_START = 0x4c,
166 SPMI_COMMON_REG_STEP_CTRL = 0x61,
167 };
168
169 /*
170 * Second common register layout used by newer devices starting with ftsmps426
171 * Note that some of the registers from the first common layout remain
172 * unchanged and their definition is not duplicated.
173 */
174 enum spmi_ftsmps426_regulator_registers {
175 SPMI_FTSMPS426_REG_VOLTAGE_LSB = 0x40,
176 SPMI_FTSMPS426_REG_VOLTAGE_MSB = 0x41,
177 SPMI_FTSMPS426_REG_VOLTAGE_ULS_LSB = 0x68,
178 SPMI_FTSMPS426_REG_VOLTAGE_ULS_MSB = 0x69,
179 };
180
181 enum spmi_vs_registers {
182 SPMI_VS_REG_OCP = 0x4a,
183 SPMI_VS_REG_SOFT_START = 0x4c,
184 };
185
186 enum spmi_boost_registers {
187 SPMI_BOOST_REG_CURRENT_LIMIT = 0x4a,
188 };
189
190 enum spmi_boost_byp_registers {
191 SPMI_BOOST_BYP_REG_CURRENT_LIMIT = 0x4b,
192 };
193
194 enum spmi_saw3_registers {
195 SAW3_SECURE = 0x00,
196 SAW3_ID = 0x04,
197 SAW3_SPM_STS = 0x0C,
198 SAW3_AVS_STS = 0x10,
199 SAW3_PMIC_STS = 0x14,
200 SAW3_RST = 0x18,
201 SAW3_VCTL = 0x1C,
202 SAW3_AVS_CTL = 0x20,
203 SAW3_AVS_LIMIT = 0x24,
204 SAW3_AVS_DLY = 0x28,
205 SAW3_AVS_HYSTERESIS = 0x2C,
206 SAW3_SPM_STS2 = 0x38,
207 SAW3_SPM_PMIC_DATA_3 = 0x4C,
208 SAW3_VERSION = 0xFD0,
209 };
210
211 /* Used for indexing into ctrl_reg. These are offets from 0x40 */
212 enum spmi_common_control_register_index {
213 SPMI_COMMON_IDX_VOLTAGE_RANGE = 0,
214 SPMI_COMMON_IDX_VOLTAGE_SET = 1,
215 SPMI_COMMON_IDX_MODE = 5,
216 SPMI_COMMON_IDX_ENABLE = 6,
217 };
218
219 /* Common regulator control register layout */
220 #define SPMI_COMMON_ENABLE_MASK 0x80
221 #define SPMI_COMMON_ENABLE 0x80
222 #define SPMI_COMMON_DISABLE 0x00
223 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN3_MASK 0x08
224 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN2_MASK 0x04
225 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN1_MASK 0x02
226 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN0_MASK 0x01
227 #define SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK 0x0f
228
229 /* Common regulator mode register layout */
230 #define SPMI_COMMON_MODE_HPM_MASK 0x80
231 #define SPMI_COMMON_MODE_AUTO_MASK 0x40
232 #define SPMI_COMMON_MODE_BYPASS_MASK 0x20
233 #define SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK 0x10
234 #define SPMI_COMMON_MODE_FOLLOW_HW_EN3_MASK 0x08
235 #define SPMI_COMMON_MODE_FOLLOW_HW_EN2_MASK 0x04
236 #define SPMI_COMMON_MODE_FOLLOW_HW_EN1_MASK 0x02
237 #define SPMI_COMMON_MODE_FOLLOW_HW_EN0_MASK 0x01
238 #define SPMI_COMMON_MODE_FOLLOW_ALL_MASK 0x1f
239
240 #define SPMI_FTSMPS426_MODE_BYPASS_MASK 3
241 #define SPMI_FTSMPS426_MODE_RETENTION_MASK 4
242 #define SPMI_FTSMPS426_MODE_LPM_MASK 5
243 #define SPMI_FTSMPS426_MODE_AUTO_MASK 6
244 #define SPMI_FTSMPS426_MODE_HPM_MASK 7
245
246 #define SPMI_FTSMPS426_MODE_MASK 0x07
247
248 /* Common regulator pull down control register layout */
249 #define SPMI_COMMON_PULL_DOWN_ENABLE_MASK 0x80
250
251 /* LDO regulator current limit control register layout */
252 #define SPMI_LDO_CURRENT_LIMIT_ENABLE_MASK 0x80
253
254 /* LDO regulator soft start control register layout */
255 #define SPMI_LDO_SOFT_START_ENABLE_MASK 0x80
256
257 /* VS regulator over current protection control register layout */
258 #define SPMI_VS_OCP_OVERRIDE 0x01
259 #define SPMI_VS_OCP_NO_OVERRIDE 0x00
260
261 /* VS regulator soft start control register layout */
262 #define SPMI_VS_SOFT_START_ENABLE_MASK 0x80
263 #define SPMI_VS_SOFT_START_SEL_MASK 0x03
264
265 /* Boost regulator current limit control register layout */
266 #define SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK 0x80
267 #define SPMI_BOOST_CURRENT_LIMIT_MASK 0x07
268
269 #define SPMI_VS_OCP_DEFAULT_MAX_RETRIES 10
270 #define SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS 30
271 #define SPMI_VS_OCP_FALL_DELAY_US 90
272 #define SPMI_VS_OCP_FAULT_DELAY_US 20000
273
274 #define SPMI_FTSMPS_STEP_CTRL_STEP_MASK 0x18
275 #define SPMI_FTSMPS_STEP_CTRL_STEP_SHIFT 3
276 #define SPMI_FTSMPS_STEP_CTRL_DELAY_MASK 0x07
277 #define SPMI_FTSMPS_STEP_CTRL_DELAY_SHIFT 0
278
279 /* Clock rate in kHz of the FTSMPS regulator reference clock. */
280 #define SPMI_FTSMPS_CLOCK_RATE 19200
281
282 /* Minimum voltage stepper delay for each step. */
283 #define SPMI_FTSMPS_STEP_DELAY 8
284 #define SPMI_DEFAULT_STEP_DELAY 20
285
286 /*
287 * The ratio SPMI_FTSMPS_STEP_MARGIN_NUM/SPMI_FTSMPS_STEP_MARGIN_DEN is used to
288 * adjust the step rate in order to account for oscillator variance.
289 */
290 #define SPMI_FTSMPS_STEP_MARGIN_NUM 4
291 #define SPMI_FTSMPS_STEP_MARGIN_DEN 5
292
293 #define SPMI_FTSMPS426_STEP_CTRL_DELAY_MASK 0x03
294 #define SPMI_FTSMPS426_STEP_CTRL_DELAY_SHIFT 0
295
296 /* Clock rate in kHz of the FTSMPS426 regulator reference clock. */
297 #define SPMI_FTSMPS426_CLOCK_RATE 4800
298
299 #define SPMI_HFS430_CLOCK_RATE 1600
300
301 /* Minimum voltage stepper delay for each step. */
302 #define SPMI_FTSMPS426_STEP_DELAY 2
303
304 /*
305 * The ratio SPMI_FTSMPS426_STEP_MARGIN_NUM/SPMI_FTSMPS426_STEP_MARGIN_DEN is
306 * used to adjust the step rate in order to account for oscillator variance.
307 */
308 #define SPMI_FTSMPS426_STEP_MARGIN_NUM 10
309 #define SPMI_FTSMPS426_STEP_MARGIN_DEN 11
310
311
312 /* VSET value to decide the range of ULT SMPS */
313 #define ULT_SMPS_RANGE_SPLIT 0x60
314
315 /**
316 * struct spmi_voltage_range - regulator set point voltage mapping description
317 * @min_uV: Minimum programmable output voltage resulting from
318 * set point register value 0x00
319 * @max_uV: Maximum programmable output voltage
320 * @step_uV: Output voltage increase resulting from the set point
321 * register value increasing by 1
322 * @set_point_min_uV: Minimum allowed voltage
323 * @set_point_max_uV: Maximum allowed voltage. This may be tweaked in order
324 * to pick which range should be used in the case of
325 * overlapping set points.
326 * @n_voltages: Number of preferred voltage set points present in this
327 * range
328 * @range_sel: Voltage range register value corresponding to this range
329 *
330 * The following relationships must be true for the values used in this struct:
331 * (max_uV - min_uV) % step_uV == 0
332 * (set_point_min_uV - min_uV) % step_uV == 0*
333 * (set_point_max_uV - min_uV) % step_uV == 0*
334 * n_voltages = (set_point_max_uV - set_point_min_uV) / step_uV + 1
335 *
336 * *Note, set_point_min_uV == set_point_max_uV == 0 is allowed in order to
337 * specify that the voltage range has meaning, but is not preferred.
338 */
339 struct spmi_voltage_range {
340 int min_uV;
341 int max_uV;
342 int step_uV;
343 int set_point_min_uV;
344 int set_point_max_uV;
345 unsigned n_voltages;
346 u8 range_sel;
347 };
348
349 /*
350 * The ranges specified in the spmi_voltage_set_points struct must be listed
351 * so that range[i].set_point_max_uV < range[i+1].set_point_min_uV.
352 */
353 struct spmi_voltage_set_points {
354 struct spmi_voltage_range *range;
355 int count;
356 unsigned n_voltages;
357 };
358
359 struct spmi_regulator {
360 struct regulator_desc desc;
361 struct device *dev;
362 struct delayed_work ocp_work;
363 struct regmap *regmap;
364 struct spmi_voltage_set_points *set_points;
365 enum spmi_regulator_logical_type logical_type;
366 int ocp_irq;
367 int ocp_count;
368 int ocp_max_retries;
369 int ocp_retry_delay_ms;
370 int hpm_min_load;
371 int slew_rate;
372 ktime_t vs_enable_time;
373 u16 base;
374 struct list_head node;
375 };
376
377 struct spmi_regulator_mapping {
378 enum spmi_regulator_type type;
379 enum spmi_regulator_subtype subtype;
380 enum spmi_regulator_logical_type logical_type;
381 u32 revision_min;
382 u32 revision_max;
383 struct regulator_ops *ops;
384 struct spmi_voltage_set_points *set_points;
385 int hpm_min_load;
386 };
387
388 struct spmi_regulator_data {
389 const char *name;
390 u16 base;
391 const char *supply;
392 const char *ocp;
393 u16 force_type;
394 };
395
396 #define SPMI_VREG(_type, _subtype, _dig_major_min, _dig_major_max, \
397 _logical_type, _ops_val, _set_points_val, _hpm_min_load) \
398 { \
399 .type = SPMI_REGULATOR_TYPE_##_type, \
400 .subtype = SPMI_REGULATOR_SUBTYPE_##_subtype, \
401 .revision_min = _dig_major_min, \
402 .revision_max = _dig_major_max, \
403 .logical_type = SPMI_REGULATOR_LOGICAL_TYPE_##_logical_type, \
404 .ops = &spmi_##_ops_val##_ops, \
405 .set_points = &_set_points_val##_set_points, \
406 .hpm_min_load = _hpm_min_load, \
407 }
408
409 #define SPMI_VREG_VS(_subtype, _dig_major_min, _dig_major_max) \
410 { \
411 .type = SPMI_REGULATOR_TYPE_VS, \
412 .subtype = SPMI_REGULATOR_SUBTYPE_##_subtype, \
413 .revision_min = _dig_major_min, \
414 .revision_max = _dig_major_max, \
415 .logical_type = SPMI_REGULATOR_LOGICAL_TYPE_VS, \
416 .ops = &spmi_vs_ops, \
417 }
418
419 #define SPMI_VOLTAGE_RANGE(_range_sel, _min_uV, _set_point_min_uV, \
420 _set_point_max_uV, _max_uV, _step_uV) \
421 { \
422 .min_uV = _min_uV, \
423 .max_uV = _max_uV, \
424 .set_point_min_uV = _set_point_min_uV, \
425 .set_point_max_uV = _set_point_max_uV, \
426 .step_uV = _step_uV, \
427 .range_sel = _range_sel, \
428 }
429
430 #define DEFINE_SPMI_SET_POINTS(name) \
431 struct spmi_voltage_set_points name##_set_points = { \
432 .range = name##_ranges, \
433 .count = ARRAY_SIZE(name##_ranges), \
434 }
435
436 /*
437 * These tables contain the physically available PMIC regulator voltage setpoint
438 * ranges. Where two ranges overlap in hardware, one of the ranges is trimmed
439 * to ensure that the setpoints available to software are monotonically
440 * increasing and unique. The set_voltage callback functions expect these
441 * properties to hold.
442 */
443 static struct spmi_voltage_range pldo_ranges[] = {
444 SPMI_VOLTAGE_RANGE(2, 750000, 750000, 1537500, 1537500, 12500),
445 SPMI_VOLTAGE_RANGE(3, 1500000, 1550000, 3075000, 3075000, 25000),
446 SPMI_VOLTAGE_RANGE(4, 1750000, 3100000, 4900000, 4900000, 50000),
447 };
448
449 static struct spmi_voltage_range nldo1_ranges[] = {
450 SPMI_VOLTAGE_RANGE(2, 750000, 750000, 1537500, 1537500, 12500),
451 };
452
453 static struct spmi_voltage_range nldo2_ranges[] = {
454 SPMI_VOLTAGE_RANGE(0, 375000, 0, 0, 1537500, 12500),
455 SPMI_VOLTAGE_RANGE(1, 375000, 375000, 768750, 768750, 6250),
456 SPMI_VOLTAGE_RANGE(2, 750000, 775000, 1537500, 1537500, 12500),
457 };
458
459 static struct spmi_voltage_range nldo3_ranges[] = {
460 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1537500, 1537500, 12500),
461 SPMI_VOLTAGE_RANGE(1, 375000, 0, 0, 1537500, 12500),
462 SPMI_VOLTAGE_RANGE(2, 750000, 0, 0, 1537500, 12500),
463 };
464
465 static struct spmi_voltage_range ln_ldo_ranges[] = {
466 SPMI_VOLTAGE_RANGE(1, 690000, 690000, 1110000, 1110000, 60000),
467 SPMI_VOLTAGE_RANGE(0, 1380000, 1380000, 2220000, 2220000, 120000),
468 };
469
470 static struct spmi_voltage_range smps_ranges[] = {
471 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1562500, 1562500, 12500),
472 SPMI_VOLTAGE_RANGE(1, 1550000, 1575000, 3125000, 3125000, 25000),
473 };
474
475 static struct spmi_voltage_range ftsmps_ranges[] = {
476 SPMI_VOLTAGE_RANGE(0, 0, 350000, 1275000, 1275000, 5000),
477 SPMI_VOLTAGE_RANGE(1, 0, 1280000, 2040000, 2040000, 10000),
478 };
479
480 static struct spmi_voltage_range ftsmps2p5_ranges[] = {
481 SPMI_VOLTAGE_RANGE(0, 80000, 350000, 1355000, 1355000, 5000),
482 SPMI_VOLTAGE_RANGE(1, 160000, 1360000, 2200000, 2200000, 10000),
483 };
484
485 static struct spmi_voltage_range ftsmps426_ranges[] = {
486 SPMI_VOLTAGE_RANGE(0, 0, 320000, 1352000, 1352000, 4000),
487 };
488
489 static struct spmi_voltage_range boost_ranges[] = {
490 SPMI_VOLTAGE_RANGE(0, 4000000, 4000000, 5550000, 5550000, 50000),
491 };
492
493 static struct spmi_voltage_range boost_byp_ranges[] = {
494 SPMI_VOLTAGE_RANGE(0, 2500000, 2500000, 5200000, 5650000, 50000),
495 };
496
497 static struct spmi_voltage_range ult_lo_smps_ranges[] = {
498 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1562500, 1562500, 12500),
499 SPMI_VOLTAGE_RANGE(1, 750000, 0, 0, 1525000, 25000),
500 };
501
502 static struct spmi_voltage_range ult_ho_smps_ranges[] = {
503 SPMI_VOLTAGE_RANGE(0, 1550000, 1550000, 2325000, 2325000, 25000),
504 };
505
506 static struct spmi_voltage_range ult_nldo_ranges[] = {
507 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1537500, 1537500, 12500),
508 };
509
510 static struct spmi_voltage_range ult_pldo_ranges[] = {
511 SPMI_VOLTAGE_RANGE(0, 1750000, 1750000, 3337500, 3337500, 12500),
512 };
513
514 static struct spmi_voltage_range hfs430_ranges[] = {
515 SPMI_VOLTAGE_RANGE(0, 320000, 320000, 2040000, 2040000, 8000),
516 };
517
518 static DEFINE_SPMI_SET_POINTS(pldo);
519 static DEFINE_SPMI_SET_POINTS(nldo1);
520 static DEFINE_SPMI_SET_POINTS(nldo2);
521 static DEFINE_SPMI_SET_POINTS(nldo3);
522 static DEFINE_SPMI_SET_POINTS(ln_ldo);
523 static DEFINE_SPMI_SET_POINTS(smps);
524 static DEFINE_SPMI_SET_POINTS(ftsmps);
525 static DEFINE_SPMI_SET_POINTS(ftsmps2p5);
526 static DEFINE_SPMI_SET_POINTS(ftsmps426);
527 static DEFINE_SPMI_SET_POINTS(boost);
528 static DEFINE_SPMI_SET_POINTS(boost_byp);
529 static DEFINE_SPMI_SET_POINTS(ult_lo_smps);
530 static DEFINE_SPMI_SET_POINTS(ult_ho_smps);
531 static DEFINE_SPMI_SET_POINTS(ult_nldo);
532 static DEFINE_SPMI_SET_POINTS(ult_pldo);
533 static DEFINE_SPMI_SET_POINTS(hfs430);
534
535 static inline int spmi_vreg_read(struct spmi_regulator *vreg, u16 addr, u8 *buf,
536 int len)
537 {
538 return regmap_bulk_read(vreg->regmap, vreg->base + addr, buf, len);
539 }
540
541 static inline int spmi_vreg_write(struct spmi_regulator *vreg, u16 addr,
542 u8 *buf, int len)
543 {
544 return regmap_bulk_write(vreg->regmap, vreg->base + addr, buf, len);
545 }
546
547 static int spmi_vreg_update_bits(struct spmi_regulator *vreg, u16 addr, u8 val,
548 u8 mask)
549 {
550 return regmap_update_bits(vreg->regmap, vreg->base + addr, mask, val);
551 }
552
553 static int spmi_regulator_vs_enable(struct regulator_dev *rdev)
554 {
555 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
556
557 if (vreg->ocp_irq) {
558 vreg->ocp_count = 0;
559 vreg->vs_enable_time = ktime_get();
560 }
561
562 return regulator_enable_regmap(rdev);
563 }
564
565 static int spmi_regulator_vs_ocp(struct regulator_dev *rdev)
566 {
567 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
568 u8 reg = SPMI_VS_OCP_OVERRIDE;
569
570 return spmi_vreg_write(vreg, SPMI_VS_REG_OCP, &reg, 1);
571 }
572
573 static int spmi_regulator_select_voltage(struct spmi_regulator *vreg,
574 int min_uV, int max_uV)
575 {
576 const struct spmi_voltage_range *range;
577 int uV = min_uV;
578 int lim_min_uV, lim_max_uV, i, range_id, range_max_uV;
579 int selector, voltage_sel;
580
581 /* Check if request voltage is outside of physically settable range. */
582 lim_min_uV = vreg->set_points->range[0].set_point_min_uV;
583 lim_max_uV =
584 vreg->set_points->range[vreg->set_points->count - 1].set_point_max_uV;
585
586 if (uV < lim_min_uV && max_uV >= lim_min_uV)
587 uV = lim_min_uV;
588
589 if (uV < lim_min_uV || uV > lim_max_uV) {
590 dev_err(vreg->dev,
591 "request v=[%d, %d] is outside possible v=[%d, %d]\n",
592 min_uV, max_uV, lim_min_uV, lim_max_uV);
593 return -EINVAL;
594 }
595
596 /* Find the range which uV is inside of. */
597 for (i = vreg->set_points->count - 1; i > 0; i--) {
598 range_max_uV = vreg->set_points->range[i - 1].set_point_max_uV;
599 if (uV > range_max_uV && range_max_uV > 0)
600 break;
601 }
602
603 range_id = i;
604 range = &vreg->set_points->range[range_id];
605
606 /*
607 * Force uV to be an allowed set point by applying a ceiling function to
608 * the uV value.
609 */
610 voltage_sel = DIV_ROUND_UP(uV - range->min_uV, range->step_uV);
611 uV = voltage_sel * range->step_uV + range->min_uV;
612
613 if (uV > max_uV) {
614 dev_err(vreg->dev,
615 "request v=[%d, %d] cannot be met by any set point; "
616 "next set point: %d\n",
617 min_uV, max_uV, uV);
618 return -EINVAL;
619 }
620
621 selector = 0;
622 for (i = 0; i < range_id; i++)
623 selector += vreg->set_points->range[i].n_voltages;
624 selector += (uV - range->set_point_min_uV) / range->step_uV;
625
626 return selector;
627 }
628
629 static int spmi_sw_selector_to_hw(struct spmi_regulator *vreg,
630 unsigned selector, u8 *range_sel,
631 u8 *voltage_sel)
632 {
633 const struct spmi_voltage_range *range, *end;
634 unsigned offset;
635
636 range = vreg->set_points->range;
637 end = range + vreg->set_points->count;
638
639 for (; range < end; range++) {
640 if (selector < range->n_voltages) {
641 /*
642 * hardware selectors between set point min and real
643 * min are invalid so we ignore them
644 */
645 offset = range->set_point_min_uV - range->min_uV;
646 offset /= range->step_uV;
647 *voltage_sel = selector + offset;
648 *range_sel = range->range_sel;
649 return 0;
650 }
651
652 selector -= range->n_voltages;
653 }
654
655 return -EINVAL;
656 }
657
658 static int spmi_hw_selector_to_sw(struct spmi_regulator *vreg, u8 hw_sel,
659 const struct spmi_voltage_range *range)
660 {
661 unsigned sw_sel = 0;
662 unsigned offset, max_hw_sel;
663 const struct spmi_voltage_range *r = vreg->set_points->range;
664 const struct spmi_voltage_range *end = r + vreg->set_points->count;
665
666 for (; r < end; r++) {
667 if (r == range && range->n_voltages) {
668 /*
669 * hardware selectors between set point min and real
670 * min and between set point max and real max are
671 * invalid so we return an error if they're
672 * programmed into the hardware
673 */
674 offset = range->set_point_min_uV - range->min_uV;
675 offset /= range->step_uV;
676 if (hw_sel < offset)
677 return -EINVAL;
678
679 max_hw_sel = range->set_point_max_uV - range->min_uV;
680 max_hw_sel /= range->step_uV;
681 if (hw_sel > max_hw_sel)
682 return -EINVAL;
683
684 return sw_sel + hw_sel - offset;
685 }
686 sw_sel += r->n_voltages;
687 }
688
689 return -EINVAL;
690 }
691
692 static const struct spmi_voltage_range *
693 spmi_regulator_find_range(struct spmi_regulator *vreg)
694 {
695 u8 range_sel;
696 const struct spmi_voltage_range *range, *end;
697
698 range = vreg->set_points->range;
699 end = range + vreg->set_points->count;
700
701 spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, &range_sel, 1);
702
703 for (; range < end; range++)
704 if (range->range_sel == range_sel)
705 return range;
706
707 return NULL;
708 }
709
710 static int spmi_regulator_select_voltage_same_range(struct spmi_regulator *vreg,
711 int min_uV, int max_uV)
712 {
713 const struct spmi_voltage_range *range;
714 int uV = min_uV;
715 int i, selector;
716
717 range = spmi_regulator_find_range(vreg);
718 if (!range)
719 goto different_range;
720
721 if (uV < range->min_uV && max_uV >= range->min_uV)
722 uV = range->min_uV;
723
724 if (uV < range->min_uV || uV > range->max_uV) {
725 /* Current range doesn't support the requested voltage. */
726 goto different_range;
727 }
728
729 /*
730 * Force uV to be an allowed set point by applying a ceiling function to
731 * the uV value.
732 */
733 uV = DIV_ROUND_UP(uV - range->min_uV, range->step_uV);
734 uV = uV * range->step_uV + range->min_uV;
735
736 if (uV > max_uV) {
737 /*
738 * No set point in the current voltage range is within the
739 * requested min_uV to max_uV range.
740 */
741 goto different_range;
742 }
743
744 selector = 0;
745 for (i = 0; i < vreg->set_points->count; i++) {
746 if (uV >= vreg->set_points->range[i].set_point_min_uV
747 && uV <= vreg->set_points->range[i].set_point_max_uV) {
748 selector +=
749 (uV - vreg->set_points->range[i].set_point_min_uV)
750 / vreg->set_points->range[i].step_uV;
751 break;
752 }
753
754 selector += vreg->set_points->range[i].n_voltages;
755 }
756
757 if (selector >= vreg->set_points->n_voltages)
758 goto different_range;
759
760 return selector;
761
762 different_range:
763 return spmi_regulator_select_voltage(vreg, min_uV, max_uV);
764 }
765
766 static int spmi_regulator_common_map_voltage(struct regulator_dev *rdev,
767 int min_uV, int max_uV)
768 {
769 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
770
771 /*
772 * Favor staying in the current voltage range if possible. This avoids
773 * voltage spikes that occur when changing the voltage range.
774 */
775 return spmi_regulator_select_voltage_same_range(vreg, min_uV, max_uV);
776 }
777
778 static int
779 spmi_regulator_common_set_voltage(struct regulator_dev *rdev, unsigned selector)
780 {
781 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
782 int ret;
783 u8 buf[2];
784 u8 range_sel, voltage_sel;
785
786 ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel);
787 if (ret)
788 return ret;
789
790 buf[0] = range_sel;
791 buf[1] = voltage_sel;
792 return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, buf, 2);
793 }
794
795 static int spmi_regulator_common_list_voltage(struct regulator_dev *rdev,
796 unsigned selector);
797
798 static int spmi_regulator_ftsmps426_set_voltage(struct regulator_dev *rdev,
799 unsigned selector)
800 {
801 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
802 u8 buf[2];
803 int mV;
804
805 mV = spmi_regulator_common_list_voltage(rdev, selector) / 1000;
806
807 buf[0] = mV & 0xff;
808 buf[1] = mV >> 8;
809 return spmi_vreg_write(vreg, SPMI_FTSMPS426_REG_VOLTAGE_LSB, buf, 2);
810 }
811
812 static int spmi_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
813 unsigned int old_selector, unsigned int new_selector)
814 {
815 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
816 int diff_uV;
817
818 diff_uV = abs(spmi_regulator_common_list_voltage(rdev, new_selector) -
819 spmi_regulator_common_list_voltage(rdev, old_selector));
820
821 return DIV_ROUND_UP(diff_uV, vreg->slew_rate);
822 }
823
824 static int spmi_regulator_common_get_voltage(struct regulator_dev *rdev)
825 {
826 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
827 const struct spmi_voltage_range *range;
828 u8 voltage_sel;
829
830 spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1);
831
832 range = spmi_regulator_find_range(vreg);
833 if (!range)
834 return -EINVAL;
835
836 return spmi_hw_selector_to_sw(vreg, voltage_sel, range);
837 }
838
839 static int spmi_regulator_ftsmps426_get_voltage(struct regulator_dev *rdev)
840 {
841 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
842 const struct spmi_voltage_range *range;
843 u8 buf[2];
844 int uV;
845
846 spmi_vreg_read(vreg, SPMI_FTSMPS426_REG_VOLTAGE_LSB, buf, 2);
847
848 uV = (((unsigned int)buf[1] << 8) | (unsigned int)buf[0]) * 1000;
849 range = vreg->set_points->range;
850
851 return (uV - range->set_point_min_uV) / range->step_uV;
852 }
853
854 static int spmi_regulator_single_map_voltage(struct regulator_dev *rdev,
855 int min_uV, int max_uV)
856 {
857 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
858
859 return spmi_regulator_select_voltage(vreg, min_uV, max_uV);
860 }
861
862 static int spmi_regulator_single_range_set_voltage(struct regulator_dev *rdev,
863 unsigned selector)
864 {
865 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
866 u8 sel = selector;
867
868 /*
869 * Certain types of regulators do not have a range select register so
870 * only voltage set register needs to be written.
871 */
872 return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &sel, 1);
873 }
874
875 static int spmi_regulator_single_range_get_voltage(struct regulator_dev *rdev)
876 {
877 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
878 u8 selector;
879 int ret;
880
881 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &selector, 1);
882 if (ret)
883 return ret;
884
885 return selector;
886 }
887
888 static int spmi_regulator_ult_lo_smps_set_voltage(struct regulator_dev *rdev,
889 unsigned selector)
890 {
891 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
892 int ret;
893 u8 range_sel, voltage_sel;
894
895 ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel);
896 if (ret)
897 return ret;
898
899 /*
900 * Calculate VSET based on range
901 * In case of range 0: voltage_sel is a 7 bit value, can be written
902 * witout any modification.
903 * In case of range 1: voltage_sel is a 5 bit value, bits[7-5] set to
904 * [011].
905 */
906 if (range_sel == 1)
907 voltage_sel |= ULT_SMPS_RANGE_SPLIT;
908
909 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_VOLTAGE_SET,
910 voltage_sel, 0xff);
911 }
912
913 static int spmi_regulator_ult_lo_smps_get_voltage(struct regulator_dev *rdev)
914 {
915 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
916 const struct spmi_voltage_range *range;
917 u8 voltage_sel;
918
919 spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1);
920
921 range = spmi_regulator_find_range(vreg);
922 if (!range)
923 return -EINVAL;
924
925 if (range->range_sel == 1)
926 voltage_sel &= ~ULT_SMPS_RANGE_SPLIT;
927
928 return spmi_hw_selector_to_sw(vreg, voltage_sel, range);
929 }
930
931 static int spmi_regulator_common_list_voltage(struct regulator_dev *rdev,
932 unsigned selector)
933 {
934 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
935 int uV = 0;
936 int i;
937
938 if (selector >= vreg->set_points->n_voltages)
939 return 0;
940
941 for (i = 0; i < vreg->set_points->count; i++) {
942 if (selector < vreg->set_points->range[i].n_voltages) {
943 uV = selector * vreg->set_points->range[i].step_uV
944 + vreg->set_points->range[i].set_point_min_uV;
945 break;
946 }
947
948 selector -= vreg->set_points->range[i].n_voltages;
949 }
950
951 return uV;
952 }
953
954 static int
955 spmi_regulator_common_set_bypass(struct regulator_dev *rdev, bool enable)
956 {
957 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
958 u8 mask = SPMI_COMMON_MODE_BYPASS_MASK;
959 u8 val = 0;
960
961 if (enable)
962 val = mask;
963
964 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
965 }
966
967 static int
968 spmi_regulator_common_get_bypass(struct regulator_dev *rdev, bool *enable)
969 {
970 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
971 u8 val;
972 int ret;
973
974 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &val, 1);
975 *enable = val & SPMI_COMMON_MODE_BYPASS_MASK;
976
977 return ret;
978 }
979
980 static unsigned int spmi_regulator_common_get_mode(struct regulator_dev *rdev)
981 {
982 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
983 u8 reg;
984
985 spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &reg, 1);
986
987 reg &= SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK;
988
989 switch (reg) {
990 case SPMI_COMMON_MODE_HPM_MASK:
991 return REGULATOR_MODE_NORMAL;
992 case SPMI_COMMON_MODE_AUTO_MASK:
993 return REGULATOR_MODE_FAST;
994 default:
995 return REGULATOR_MODE_IDLE;
996 }
997 }
998
999 static unsigned int spmi_regulator_ftsmps426_get_mode(struct regulator_dev *rdev)
1000 {
1001 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1002 u8 reg;
1003
1004 spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &reg, 1);
1005
1006 switch (reg) {
1007 case SPMI_FTSMPS426_MODE_HPM_MASK:
1008 return REGULATOR_MODE_NORMAL;
1009 case SPMI_FTSMPS426_MODE_AUTO_MASK:
1010 return REGULATOR_MODE_FAST;
1011 default:
1012 return REGULATOR_MODE_IDLE;
1013 }
1014 }
1015
1016 static int
1017 spmi_regulator_common_set_mode(struct regulator_dev *rdev, unsigned int mode)
1018 {
1019 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1020 u8 mask = SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK;
1021 u8 val;
1022
1023 switch (mode) {
1024 case REGULATOR_MODE_NORMAL:
1025 val = SPMI_COMMON_MODE_HPM_MASK;
1026 break;
1027 case REGULATOR_MODE_FAST:
1028 val = SPMI_COMMON_MODE_AUTO_MASK;
1029 break;
1030 default:
1031 val = 0;
1032 break;
1033 }
1034
1035 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
1036 }
1037
1038 static int
1039 spmi_regulator_ftsmps426_set_mode(struct regulator_dev *rdev, unsigned int mode)
1040 {
1041 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1042 u8 mask = SPMI_FTSMPS426_MODE_MASK;
1043 u8 val;
1044
1045 switch (mode) {
1046 case REGULATOR_MODE_NORMAL:
1047 val = SPMI_FTSMPS426_MODE_HPM_MASK;
1048 break;
1049 case REGULATOR_MODE_FAST:
1050 val = SPMI_FTSMPS426_MODE_AUTO_MASK;
1051 break;
1052 case REGULATOR_MODE_IDLE:
1053 val = SPMI_FTSMPS426_MODE_LPM_MASK;
1054 break;
1055 default:
1056 return -EINVAL;
1057 }
1058
1059 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
1060 }
1061
1062 static int
1063 spmi_regulator_common_set_load(struct regulator_dev *rdev, int load_uA)
1064 {
1065 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1066 unsigned int mode;
1067
1068 if (load_uA >= vreg->hpm_min_load)
1069 mode = REGULATOR_MODE_NORMAL;
1070 else
1071 mode = REGULATOR_MODE_IDLE;
1072
1073 return spmi_regulator_common_set_mode(rdev, mode);
1074 }
1075
1076 static int spmi_regulator_common_set_pull_down(struct regulator_dev *rdev)
1077 {
1078 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1079 unsigned int mask = SPMI_COMMON_PULL_DOWN_ENABLE_MASK;
1080
1081 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_PULL_DOWN,
1082 mask, mask);
1083 }
1084
1085 static int spmi_regulator_common_set_soft_start(struct regulator_dev *rdev)
1086 {
1087 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1088 unsigned int mask = SPMI_LDO_SOFT_START_ENABLE_MASK;
1089
1090 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_SOFT_START,
1091 mask, mask);
1092 }
1093
1094 static int spmi_regulator_set_ilim(struct regulator_dev *rdev, int ilim_uA)
1095 {
1096 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1097 enum spmi_regulator_logical_type type = vreg->logical_type;
1098 unsigned int current_reg;
1099 u8 reg;
1100 u8 mask = SPMI_BOOST_CURRENT_LIMIT_MASK |
1101 SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK;
1102 int max = (SPMI_BOOST_CURRENT_LIMIT_MASK + 1) * 500;
1103
1104 if (type == SPMI_REGULATOR_LOGICAL_TYPE_BOOST)
1105 current_reg = SPMI_BOOST_REG_CURRENT_LIMIT;
1106 else
1107 current_reg = SPMI_BOOST_BYP_REG_CURRENT_LIMIT;
1108
1109 if (ilim_uA > max || ilim_uA <= 0)
1110 return -EINVAL;
1111
1112 reg = (ilim_uA - 1) / 500;
1113 reg |= SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK;
1114
1115 return spmi_vreg_update_bits(vreg, current_reg, reg, mask);
1116 }
1117
1118 static int spmi_regulator_vs_clear_ocp(struct spmi_regulator *vreg)
1119 {
1120 int ret;
1121
1122 ret = spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE,
1123 SPMI_COMMON_DISABLE, SPMI_COMMON_ENABLE_MASK);
1124
1125 vreg->vs_enable_time = ktime_get();
1126
1127 ret = spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE,
1128 SPMI_COMMON_ENABLE, SPMI_COMMON_ENABLE_MASK);
1129
1130 return ret;
1131 }
1132
1133 static void spmi_regulator_vs_ocp_work(struct work_struct *work)
1134 {
1135 struct delayed_work *dwork = to_delayed_work(work);
1136 struct spmi_regulator *vreg
1137 = container_of(dwork, struct spmi_regulator, ocp_work);
1138
1139 spmi_regulator_vs_clear_ocp(vreg);
1140 }
1141
1142 static irqreturn_t spmi_regulator_vs_ocp_isr(int irq, void *data)
1143 {
1144 struct spmi_regulator *vreg = data;
1145 ktime_t ocp_irq_time;
1146 s64 ocp_trigger_delay_us;
1147
1148 ocp_irq_time = ktime_get();
1149 ocp_trigger_delay_us = ktime_us_delta(ocp_irq_time,
1150 vreg->vs_enable_time);
1151
1152 /*
1153 * Reset the OCP count if there is a large delay between switch enable
1154 * and when OCP triggers. This is indicative of a hotplug event as
1155 * opposed to a fault.
1156 */
1157 if (ocp_trigger_delay_us > SPMI_VS_OCP_FAULT_DELAY_US)
1158 vreg->ocp_count = 0;
1159
1160 /* Wait for switch output to settle back to 0 V after OCP triggered. */
1161 udelay(SPMI_VS_OCP_FALL_DELAY_US);
1162
1163 vreg->ocp_count++;
1164
1165 if (vreg->ocp_count == 1) {
1166 /* Immediately clear the over current condition. */
1167 spmi_regulator_vs_clear_ocp(vreg);
1168 } else if (vreg->ocp_count <= vreg->ocp_max_retries) {
1169 /* Schedule the over current clear task to run later. */
1170 schedule_delayed_work(&vreg->ocp_work,
1171 msecs_to_jiffies(vreg->ocp_retry_delay_ms) + 1);
1172 } else {
1173 dev_err(vreg->dev,
1174 "OCP triggered %d times; no further retries\n",
1175 vreg->ocp_count);
1176 }
1177
1178 return IRQ_HANDLED;
1179 }
1180
1181 #define SAW3_VCTL_DATA_MASK 0xFF
1182 #define SAW3_VCTL_CLEAR_MASK 0x700FF
1183 #define SAW3_AVS_CTL_EN_MASK 0x1
1184 #define SAW3_AVS_CTL_TGGL_MASK 0x8000000
1185 #define SAW3_AVS_CTL_CLEAR_MASK 0x7efc00
1186
1187 static struct regmap *saw_regmap;
1188
1189 static void spmi_saw_set_vdd(void *data)
1190 {
1191 u32 vctl, data3, avs_ctl, pmic_sts;
1192 bool avs_enabled = false;
1193 unsigned long timeout;
1194 u8 voltage_sel = *(u8 *)data;
1195
1196 regmap_read(saw_regmap, SAW3_AVS_CTL, &avs_ctl);
1197 regmap_read(saw_regmap, SAW3_VCTL, &vctl);
1198 regmap_read(saw_regmap, SAW3_SPM_PMIC_DATA_3, &data3);
1199
1200 /* select the band */
1201 vctl &= ~SAW3_VCTL_CLEAR_MASK;
1202 vctl |= (u32)voltage_sel;
1203
1204 data3 &= ~SAW3_VCTL_CLEAR_MASK;
1205 data3 |= (u32)voltage_sel;
1206
1207 /* If AVS is enabled, switch it off during the voltage change */
1208 avs_enabled = SAW3_AVS_CTL_EN_MASK & avs_ctl;
1209 if (avs_enabled) {
1210 avs_ctl &= ~SAW3_AVS_CTL_TGGL_MASK;
1211 regmap_write(saw_regmap, SAW3_AVS_CTL, avs_ctl);
1212 }
1213
1214 regmap_write(saw_regmap, SAW3_RST, 1);
1215 regmap_write(saw_regmap, SAW3_VCTL, vctl);
1216 regmap_write(saw_regmap, SAW3_SPM_PMIC_DATA_3, data3);
1217
1218 timeout = jiffies + usecs_to_jiffies(100);
1219 do {
1220 regmap_read(saw_regmap, SAW3_PMIC_STS, &pmic_sts);
1221 pmic_sts &= SAW3_VCTL_DATA_MASK;
1222 if (pmic_sts == (u32)voltage_sel)
1223 break;
1224
1225 cpu_relax();
1226
1227 } while (time_before(jiffies, timeout));
1228
1229 /* After successful voltage change, switch the AVS back on */
1230 if (avs_enabled) {
1231 pmic_sts &= 0x3f;
1232 avs_ctl &= ~SAW3_AVS_CTL_CLEAR_MASK;
1233 avs_ctl |= ((pmic_sts - 4) << 10);
1234 avs_ctl |= (pmic_sts << 17);
1235 avs_ctl |= SAW3_AVS_CTL_TGGL_MASK;
1236 regmap_write(saw_regmap, SAW3_AVS_CTL, avs_ctl);
1237 }
1238 }
1239
1240 static int
1241 spmi_regulator_saw_set_voltage(struct regulator_dev *rdev, unsigned selector)
1242 {
1243 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1244 int ret;
1245 u8 range_sel, voltage_sel;
1246
1247 ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel);
1248 if (ret)
1249 return ret;
1250
1251 if (0 != range_sel) {
1252 dev_dbg(&rdev->dev, "range_sel = %02X voltage_sel = %02X", \
1253 range_sel, voltage_sel);
1254 return -EINVAL;
1255 }
1256
1257 /* Always do the SAW register writes on the first CPU */
1258 return smp_call_function_single(0, spmi_saw_set_vdd, \
1259 &voltage_sel, true);
1260 }
1261
1262 static struct regulator_ops spmi_saw_ops = {};
1263
1264 static struct regulator_ops spmi_smps_ops = {
1265 .enable = regulator_enable_regmap,
1266 .disable = regulator_disable_regmap,
1267 .is_enabled = regulator_is_enabled_regmap,
1268 .set_voltage_sel = spmi_regulator_common_set_voltage,
1269 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
1270 .get_voltage_sel = spmi_regulator_common_get_voltage,
1271 .map_voltage = spmi_regulator_common_map_voltage,
1272 .list_voltage = spmi_regulator_common_list_voltage,
1273 .set_mode = spmi_regulator_common_set_mode,
1274 .get_mode = spmi_regulator_common_get_mode,
1275 .set_load = spmi_regulator_common_set_load,
1276 .set_pull_down = spmi_regulator_common_set_pull_down,
1277 };
1278
1279 static struct regulator_ops spmi_ldo_ops = {
1280 .enable = regulator_enable_regmap,
1281 .disable = regulator_disable_regmap,
1282 .is_enabled = regulator_is_enabled_regmap,
1283 .set_voltage_sel = spmi_regulator_common_set_voltage,
1284 .get_voltage_sel = spmi_regulator_common_get_voltage,
1285 .map_voltage = spmi_regulator_common_map_voltage,
1286 .list_voltage = spmi_regulator_common_list_voltage,
1287 .set_mode = spmi_regulator_common_set_mode,
1288 .get_mode = spmi_regulator_common_get_mode,
1289 .set_load = spmi_regulator_common_set_load,
1290 .set_bypass = spmi_regulator_common_set_bypass,
1291 .get_bypass = spmi_regulator_common_get_bypass,
1292 .set_pull_down = spmi_regulator_common_set_pull_down,
1293 .set_soft_start = spmi_regulator_common_set_soft_start,
1294 };
1295
1296 static struct regulator_ops spmi_ln_ldo_ops = {
1297 .enable = regulator_enable_regmap,
1298 .disable = regulator_disable_regmap,
1299 .is_enabled = regulator_is_enabled_regmap,
1300 .set_voltage_sel = spmi_regulator_common_set_voltage,
1301 .get_voltage_sel = spmi_regulator_common_get_voltage,
1302 .map_voltage = spmi_regulator_common_map_voltage,
1303 .list_voltage = spmi_regulator_common_list_voltage,
1304 .set_bypass = spmi_regulator_common_set_bypass,
1305 .get_bypass = spmi_regulator_common_get_bypass,
1306 };
1307
1308 static struct regulator_ops spmi_vs_ops = {
1309 .enable = spmi_regulator_vs_enable,
1310 .disable = regulator_disable_regmap,
1311 .is_enabled = regulator_is_enabled_regmap,
1312 .set_pull_down = spmi_regulator_common_set_pull_down,
1313 .set_soft_start = spmi_regulator_common_set_soft_start,
1314 .set_over_current_protection = spmi_regulator_vs_ocp,
1315 .set_mode = spmi_regulator_common_set_mode,
1316 .get_mode = spmi_regulator_common_get_mode,
1317 };
1318
1319 static struct regulator_ops spmi_boost_ops = {
1320 .enable = regulator_enable_regmap,
1321 .disable = regulator_disable_regmap,
1322 .is_enabled = regulator_is_enabled_regmap,
1323 .set_voltage_sel = spmi_regulator_single_range_set_voltage,
1324 .get_voltage_sel = spmi_regulator_single_range_get_voltage,
1325 .map_voltage = spmi_regulator_single_map_voltage,
1326 .list_voltage = spmi_regulator_common_list_voltage,
1327 .set_input_current_limit = spmi_regulator_set_ilim,
1328 };
1329
1330 static struct regulator_ops spmi_ftsmps_ops = {
1331 .enable = regulator_enable_regmap,
1332 .disable = regulator_disable_regmap,
1333 .is_enabled = regulator_is_enabled_regmap,
1334 .set_voltage_sel = spmi_regulator_common_set_voltage,
1335 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
1336 .get_voltage_sel = spmi_regulator_common_get_voltage,
1337 .map_voltage = spmi_regulator_common_map_voltage,
1338 .list_voltage = spmi_regulator_common_list_voltage,
1339 .set_mode = spmi_regulator_common_set_mode,
1340 .get_mode = spmi_regulator_common_get_mode,
1341 .set_load = spmi_regulator_common_set_load,
1342 .set_pull_down = spmi_regulator_common_set_pull_down,
1343 };
1344
1345 static struct regulator_ops spmi_ult_lo_smps_ops = {
1346 .enable = regulator_enable_regmap,
1347 .disable = regulator_disable_regmap,
1348 .is_enabled = regulator_is_enabled_regmap,
1349 .set_voltage_sel = spmi_regulator_ult_lo_smps_set_voltage,
1350 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
1351 .get_voltage_sel = spmi_regulator_ult_lo_smps_get_voltage,
1352 .list_voltage = spmi_regulator_common_list_voltage,
1353 .set_mode = spmi_regulator_common_set_mode,
1354 .get_mode = spmi_regulator_common_get_mode,
1355 .set_load = spmi_regulator_common_set_load,
1356 .set_pull_down = spmi_regulator_common_set_pull_down,
1357 };
1358
1359 static struct regulator_ops spmi_ult_ho_smps_ops = {
1360 .enable = regulator_enable_regmap,
1361 .disable = regulator_disable_regmap,
1362 .is_enabled = regulator_is_enabled_regmap,
1363 .set_voltage_sel = spmi_regulator_single_range_set_voltage,
1364 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
1365 .get_voltage_sel = spmi_regulator_single_range_get_voltage,
1366 .map_voltage = spmi_regulator_single_map_voltage,
1367 .list_voltage = spmi_regulator_common_list_voltage,
1368 .set_mode = spmi_regulator_common_set_mode,
1369 .get_mode = spmi_regulator_common_get_mode,
1370 .set_load = spmi_regulator_common_set_load,
1371 .set_pull_down = spmi_regulator_common_set_pull_down,
1372 };
1373
1374 static struct regulator_ops spmi_ult_ldo_ops = {
1375 .enable = regulator_enable_regmap,
1376 .disable = regulator_disable_regmap,
1377 .is_enabled = regulator_is_enabled_regmap,
1378 .set_voltage_sel = spmi_regulator_single_range_set_voltage,
1379 .get_voltage_sel = spmi_regulator_single_range_get_voltage,
1380 .map_voltage = spmi_regulator_single_map_voltage,
1381 .list_voltage = spmi_regulator_common_list_voltage,
1382 .set_mode = spmi_regulator_common_set_mode,
1383 .get_mode = spmi_regulator_common_get_mode,
1384 .set_load = spmi_regulator_common_set_load,
1385 .set_bypass = spmi_regulator_common_set_bypass,
1386 .get_bypass = spmi_regulator_common_get_bypass,
1387 .set_pull_down = spmi_regulator_common_set_pull_down,
1388 .set_soft_start = spmi_regulator_common_set_soft_start,
1389 };
1390
1391 static struct regulator_ops spmi_ftsmps426_ops = {
1392 .enable = regulator_enable_regmap,
1393 .disable = regulator_disable_regmap,
1394 .is_enabled = regulator_is_enabled_regmap,
1395 .set_voltage_sel = spmi_regulator_ftsmps426_set_voltage,
1396 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
1397 .get_voltage_sel = spmi_regulator_ftsmps426_get_voltage,
1398 .map_voltage = spmi_regulator_single_map_voltage,
1399 .list_voltage = spmi_regulator_common_list_voltage,
1400 .set_mode = spmi_regulator_ftsmps426_set_mode,
1401 .get_mode = spmi_regulator_ftsmps426_get_mode,
1402 .set_load = spmi_regulator_common_set_load,
1403 .set_pull_down = spmi_regulator_common_set_pull_down,
1404 };
1405
1406 static struct regulator_ops spmi_hfs430_ops = {
1407 .enable = regulator_enable_regmap,
1408 .disable = regulator_disable_regmap,
1409 .is_enabled = regulator_is_enabled_regmap,
1410 .set_voltage_sel = spmi_regulator_ftsmps426_set_voltage,
1411 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
1412 .get_voltage_sel = spmi_regulator_ftsmps426_get_voltage,
1413 .map_voltage = spmi_regulator_single_map_voltage,
1414 .list_voltage = spmi_regulator_common_list_voltage,
1415 .set_mode = spmi_regulator_ftsmps426_set_mode,
1416 .get_mode = spmi_regulator_ftsmps426_get_mode,
1417 };
1418
1419 /* Maximum possible digital major revision value */
1420 #define INF 0xFF
1421
1422 static const struct spmi_regulator_mapping supported_regulators[] = {
1423 /* type subtype dig_min dig_max ltype ops setpoints hpm_min */
1424 SPMI_VREG(BUCK, GP_CTL, 0, INF, SMPS, smps, smps, 100000),
1425 SPMI_VREG(BUCK, HFS430, 0, INF, HFS430, hfs430, hfs430, 10000),
1426 SPMI_VREG(LDO, N300, 0, INF, LDO, ldo, nldo1, 10000),
1427 SPMI_VREG(LDO, N600, 0, 0, LDO, ldo, nldo2, 10000),
1428 SPMI_VREG(LDO, N1200, 0, 0, LDO, ldo, nldo2, 10000),
1429 SPMI_VREG(LDO, N600, 1, INF, LDO, ldo, nldo3, 10000),
1430 SPMI_VREG(LDO, N1200, 1, INF, LDO, ldo, nldo3, 10000),
1431 SPMI_VREG(LDO, N600_ST, 0, 0, LDO, ldo, nldo2, 10000),
1432 SPMI_VREG(LDO, N1200_ST, 0, 0, LDO, ldo, nldo2, 10000),
1433 SPMI_VREG(LDO, N600_ST, 1, INF, LDO, ldo, nldo3, 10000),
1434 SPMI_VREG(LDO, N1200_ST, 1, INF, LDO, ldo, nldo3, 10000),
1435 SPMI_VREG(LDO, P50, 0, INF, LDO, ldo, pldo, 5000),
1436 SPMI_VREG(LDO, P150, 0, INF, LDO, ldo, pldo, 10000),
1437 SPMI_VREG(LDO, P300, 0, INF, LDO, ldo, pldo, 10000),
1438 SPMI_VREG(LDO, P600, 0, INF, LDO, ldo, pldo, 10000),
1439 SPMI_VREG(LDO, P1200, 0, INF, LDO, ldo, pldo, 10000),
1440 SPMI_VREG(LDO, LN, 0, INF, LN_LDO, ln_ldo, ln_ldo, 0),
1441 SPMI_VREG(LDO, LV_P50, 0, INF, LDO, ldo, pldo, 5000),
1442 SPMI_VREG(LDO, LV_P150, 0, INF, LDO, ldo, pldo, 10000),
1443 SPMI_VREG(LDO, LV_P300, 0, INF, LDO, ldo, pldo, 10000),
1444 SPMI_VREG(LDO, LV_P600, 0, INF, LDO, ldo, pldo, 10000),
1445 SPMI_VREG(LDO, LV_P1200, 0, INF, LDO, ldo, pldo, 10000),
1446 SPMI_VREG_VS(LV100, 0, INF),
1447 SPMI_VREG_VS(LV300, 0, INF),
1448 SPMI_VREG_VS(MV300, 0, INF),
1449 SPMI_VREG_VS(MV500, 0, INF),
1450 SPMI_VREG_VS(HDMI, 0, INF),
1451 SPMI_VREG_VS(OTG, 0, INF),
1452 SPMI_VREG(BOOST, 5V_BOOST, 0, INF, BOOST, boost, boost, 0),
1453 SPMI_VREG(FTS, FTS_CTL, 0, INF, FTSMPS, ftsmps, ftsmps, 100000),
1454 SPMI_VREG(FTS, FTS2p5_CTL, 0, INF, FTSMPS, ftsmps, ftsmps2p5, 100000),
1455 SPMI_VREG(FTS, FTS426_CTL, 0, INF, FTSMPS426, ftsmps426, ftsmps426, 100000),
1456 SPMI_VREG(BOOST_BYP, BB_2A, 0, INF, BOOST_BYP, boost, boost_byp, 0),
1457 SPMI_VREG(ULT_BUCK, ULT_HF_CTL1, 0, INF, ULT_LO_SMPS, ult_lo_smps,
1458 ult_lo_smps, 100000),
1459 SPMI_VREG(ULT_BUCK, ULT_HF_CTL2, 0, INF, ULT_LO_SMPS, ult_lo_smps,
1460 ult_lo_smps, 100000),
1461 SPMI_VREG(ULT_BUCK, ULT_HF_CTL3, 0, INF, ULT_LO_SMPS, ult_lo_smps,
1462 ult_lo_smps, 100000),
1463 SPMI_VREG(ULT_BUCK, ULT_HF_CTL4, 0, INF, ULT_HO_SMPS, ult_ho_smps,
1464 ult_ho_smps, 100000),
1465 SPMI_VREG(ULT_LDO, N300_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
1466 SPMI_VREG(ULT_LDO, N600_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
1467 SPMI_VREG(ULT_LDO, N900_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
1468 SPMI_VREG(ULT_LDO, N1200_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
1469 SPMI_VREG(ULT_LDO, LV_P150, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1470 SPMI_VREG(ULT_LDO, LV_P300, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1471 SPMI_VREG(ULT_LDO, LV_P450, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1472 SPMI_VREG(ULT_LDO, P600, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1473 SPMI_VREG(ULT_LDO, P150, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1474 SPMI_VREG(ULT_LDO, P50, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 5000),
1475 };
1476
1477 static void spmi_calculate_num_voltages(struct spmi_voltage_set_points *points)
1478 {
1479 unsigned int n;
1480 struct spmi_voltage_range *range = points->range;
1481
1482 for (; range < points->range + points->count; range++) {
1483 n = 0;
1484 if (range->set_point_max_uV) {
1485 n = range->set_point_max_uV - range->set_point_min_uV;
1486 n = (n / range->step_uV) + 1;
1487 }
1488 range->n_voltages = n;
1489 points->n_voltages += n;
1490 }
1491 }
1492
1493 static int spmi_regulator_match(struct spmi_regulator *vreg, u16 force_type)
1494 {
1495 const struct spmi_regulator_mapping *mapping;
1496 int ret, i;
1497 u32 dig_major_rev;
1498 u8 version[SPMI_COMMON_REG_SUBTYPE - SPMI_COMMON_REG_DIG_MAJOR_REV + 1];
1499 u8 type, subtype;
1500
1501 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_DIG_MAJOR_REV, version,
1502 ARRAY_SIZE(version));
1503 if (ret) {
1504 dev_dbg(vreg->dev, "could not read version registers\n");
1505 return ret;
1506 }
1507 dig_major_rev = version[SPMI_COMMON_REG_DIG_MAJOR_REV
1508 - SPMI_COMMON_REG_DIG_MAJOR_REV];
1509
1510 if (!force_type) {
1511 type = version[SPMI_COMMON_REG_TYPE -
1512 SPMI_COMMON_REG_DIG_MAJOR_REV];
1513 subtype = version[SPMI_COMMON_REG_SUBTYPE -
1514 SPMI_COMMON_REG_DIG_MAJOR_REV];
1515 } else {
1516 type = force_type >> 8;
1517 subtype = force_type;
1518 }
1519
1520 for (i = 0; i < ARRAY_SIZE(supported_regulators); i++) {
1521 mapping = &supported_regulators[i];
1522 if (mapping->type == type && mapping->subtype == subtype
1523 && mapping->revision_min <= dig_major_rev
1524 && mapping->revision_max >= dig_major_rev)
1525 goto found;
1526 }
1527
1528 dev_err(vreg->dev,
1529 "unsupported regulator: name=%s type=0x%02X, subtype=0x%02X, dig major rev=0x%02X\n",
1530 vreg->desc.name, type, subtype, dig_major_rev);
1531
1532 return -ENODEV;
1533
1534 found:
1535 vreg->logical_type = mapping->logical_type;
1536 vreg->set_points = mapping->set_points;
1537 vreg->hpm_min_load = mapping->hpm_min_load;
1538 vreg->desc.ops = mapping->ops;
1539
1540 if (mapping->set_points) {
1541 if (!mapping->set_points->n_voltages)
1542 spmi_calculate_num_voltages(mapping->set_points);
1543 vreg->desc.n_voltages = mapping->set_points->n_voltages;
1544 }
1545
1546 return 0;
1547 }
1548
1549 static int spmi_regulator_init_slew_rate(struct spmi_regulator *vreg)
1550 {
1551 int ret;
1552 u8 reg = 0;
1553 int step, delay, slew_rate, step_delay;
1554 const struct spmi_voltage_range *range;
1555
1556 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_STEP_CTRL, &reg, 1);
1557 if (ret) {
1558 dev_err(vreg->dev, "spmi read failed, ret=%d\n", ret);
1559 return ret;
1560 }
1561
1562 range = spmi_regulator_find_range(vreg);
1563 if (!range)
1564 return -EINVAL;
1565
1566 switch (vreg->logical_type) {
1567 case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS:
1568 step_delay = SPMI_FTSMPS_STEP_DELAY;
1569 break;
1570 default:
1571 step_delay = SPMI_DEFAULT_STEP_DELAY;
1572 break;
1573 }
1574
1575 step = reg & SPMI_FTSMPS_STEP_CTRL_STEP_MASK;
1576 step >>= SPMI_FTSMPS_STEP_CTRL_STEP_SHIFT;
1577
1578 delay = reg & SPMI_FTSMPS_STEP_CTRL_DELAY_MASK;
1579 delay >>= SPMI_FTSMPS_STEP_CTRL_DELAY_SHIFT;
1580
1581 /* slew_rate has units of uV/us */
1582 slew_rate = SPMI_FTSMPS_CLOCK_RATE * range->step_uV * (1 << step);
1583 slew_rate /= 1000 * (step_delay << delay);
1584 slew_rate *= SPMI_FTSMPS_STEP_MARGIN_NUM;
1585 slew_rate /= SPMI_FTSMPS_STEP_MARGIN_DEN;
1586
1587 /* Ensure that the slew rate is greater than 0 */
1588 vreg->slew_rate = max(slew_rate, 1);
1589
1590 return ret;
1591 }
1592
1593 static int spmi_regulator_init_slew_rate_ftsmps426(struct spmi_regulator *vreg,
1594 int clock_rate)
1595 {
1596 int ret;
1597 u8 reg = 0;
1598 int delay, slew_rate;
1599 const struct spmi_voltage_range *range = &vreg->set_points->range[0];
1600
1601 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_STEP_CTRL, &reg, 1);
1602 if (ret) {
1603 dev_err(vreg->dev, "spmi read failed, ret=%d\n", ret);
1604 return ret;
1605 }
1606
1607 delay = reg & SPMI_FTSMPS426_STEP_CTRL_DELAY_MASK;
1608 delay >>= SPMI_FTSMPS426_STEP_CTRL_DELAY_SHIFT;
1609
1610 /* slew_rate has units of uV/us */
1611 slew_rate = clock_rate * range->step_uV;
1612 slew_rate /= 1000 * (SPMI_FTSMPS426_STEP_DELAY << delay);
1613 slew_rate *= SPMI_FTSMPS426_STEP_MARGIN_NUM;
1614 slew_rate /= SPMI_FTSMPS426_STEP_MARGIN_DEN;
1615
1616 /* Ensure that the slew rate is greater than 0 */
1617 vreg->slew_rate = max(slew_rate, 1);
1618
1619 return ret;
1620 }
1621
1622 static int spmi_regulator_init_registers(struct spmi_regulator *vreg,
1623 const struct spmi_regulator_init_data *data)
1624 {
1625 int ret;
1626 enum spmi_regulator_logical_type type;
1627 u8 ctrl_reg[8], reg, mask;
1628
1629 type = vreg->logical_type;
1630
1631 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8);
1632 if (ret)
1633 return ret;
1634
1635 /* Set up enable pin control. */
1636 if ((type == SPMI_REGULATOR_LOGICAL_TYPE_SMPS
1637 || type == SPMI_REGULATOR_LOGICAL_TYPE_LDO
1638 || type == SPMI_REGULATOR_LOGICAL_TYPE_VS)
1639 && !(data->pin_ctrl_enable
1640 & SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT)) {
1641 ctrl_reg[SPMI_COMMON_IDX_ENABLE] &=
1642 ~SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK;
1643 ctrl_reg[SPMI_COMMON_IDX_ENABLE] |=
1644 data->pin_ctrl_enable & SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK;
1645 }
1646
1647 /* Set up mode pin control. */
1648 if ((type == SPMI_REGULATOR_LOGICAL_TYPE_SMPS
1649 || type == SPMI_REGULATOR_LOGICAL_TYPE_LDO)
1650 && !(data->pin_ctrl_hpm
1651 & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) {
1652 ctrl_reg[SPMI_COMMON_IDX_MODE] &=
1653 ~SPMI_COMMON_MODE_FOLLOW_ALL_MASK;
1654 ctrl_reg[SPMI_COMMON_IDX_MODE] |=
1655 data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_ALL_MASK;
1656 }
1657
1658 if (type == SPMI_REGULATOR_LOGICAL_TYPE_VS
1659 && !(data->pin_ctrl_hpm & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) {
1660 ctrl_reg[SPMI_COMMON_IDX_MODE] &=
1661 ~SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
1662 ctrl_reg[SPMI_COMMON_IDX_MODE] |=
1663 data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
1664 }
1665
1666 if ((type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS
1667 || type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS
1668 || type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO)
1669 && !(data->pin_ctrl_hpm
1670 & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) {
1671 ctrl_reg[SPMI_COMMON_IDX_MODE] &=
1672 ~SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
1673 ctrl_reg[SPMI_COMMON_IDX_MODE] |=
1674 data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
1675 }
1676
1677 /* Write back any control register values that were modified. */
1678 ret = spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8);
1679 if (ret)
1680 return ret;
1681
1682 /* Set soft start strength and over current protection for VS. */
1683 if (type == SPMI_REGULATOR_LOGICAL_TYPE_VS) {
1684 if (data->vs_soft_start_strength
1685 != SPMI_VS_SOFT_START_STR_HW_DEFAULT) {
1686 reg = data->vs_soft_start_strength
1687 & SPMI_VS_SOFT_START_SEL_MASK;
1688 mask = SPMI_VS_SOFT_START_SEL_MASK;
1689 return spmi_vreg_update_bits(vreg,
1690 SPMI_VS_REG_SOFT_START,
1691 reg, mask);
1692 }
1693 }
1694
1695 return 0;
1696 }
1697
1698 static void spmi_regulator_get_dt_config(struct spmi_regulator *vreg,
1699 struct device_node *node, struct spmi_regulator_init_data *data)
1700 {
1701 /*
1702 * Initialize configuration parameters to use hardware default in case
1703 * no value is specified via device tree.
1704 */
1705 data->pin_ctrl_enable = SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT;
1706 data->pin_ctrl_hpm = SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT;
1707 data->vs_soft_start_strength = SPMI_VS_SOFT_START_STR_HW_DEFAULT;
1708
1709 /* These bindings are optional, so it is okay if they aren't found. */
1710 of_property_read_u32(node, "qcom,ocp-max-retries",
1711 &vreg->ocp_max_retries);
1712 of_property_read_u32(node, "qcom,ocp-retry-delay",
1713 &vreg->ocp_retry_delay_ms);
1714 of_property_read_u32(node, "qcom,pin-ctrl-enable",
1715 &data->pin_ctrl_enable);
1716 of_property_read_u32(node, "qcom,pin-ctrl-hpm", &data->pin_ctrl_hpm);
1717 of_property_read_u32(node, "qcom,vs-soft-start-strength",
1718 &data->vs_soft_start_strength);
1719 }
1720
1721 static unsigned int spmi_regulator_of_map_mode(unsigned int mode)
1722 {
1723 if (mode == 1)
1724 return REGULATOR_MODE_NORMAL;
1725 if (mode == 2)
1726 return REGULATOR_MODE_FAST;
1727
1728 return REGULATOR_MODE_IDLE;
1729 }
1730
1731 static int spmi_regulator_of_parse(struct device_node *node,
1732 const struct regulator_desc *desc,
1733 struct regulator_config *config)
1734 {
1735 struct spmi_regulator_init_data data = { };
1736 struct spmi_regulator *vreg = config->driver_data;
1737 struct device *dev = config->dev;
1738 int ret;
1739
1740 spmi_regulator_get_dt_config(vreg, node, &data);
1741
1742 if (!vreg->ocp_max_retries)
1743 vreg->ocp_max_retries = SPMI_VS_OCP_DEFAULT_MAX_RETRIES;
1744 if (!vreg->ocp_retry_delay_ms)
1745 vreg->ocp_retry_delay_ms = SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS;
1746
1747 ret = spmi_regulator_init_registers(vreg, &data);
1748 if (ret) {
1749 dev_err(dev, "common initialization failed, ret=%d\n", ret);
1750 return ret;
1751 }
1752
1753 switch (vreg->logical_type) {
1754 case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS:
1755 case SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS:
1756 case SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS:
1757 case SPMI_REGULATOR_LOGICAL_TYPE_SMPS:
1758 ret = spmi_regulator_init_slew_rate(vreg);
1759 if (ret)
1760 return ret;
1761 break;
1762 case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS426:
1763 ret = spmi_regulator_init_slew_rate_ftsmps426(vreg,
1764 SPMI_FTSMPS426_CLOCK_RATE);
1765 if (ret)
1766 return ret;
1767 break;
1768 case SPMI_REGULATOR_LOGICAL_TYPE_HFS430:
1769 ret = spmi_regulator_init_slew_rate_ftsmps426(vreg,
1770 SPMI_HFS430_CLOCK_RATE);
1771 if (ret)
1772 return ret;
1773 break;
1774 default:
1775 break;
1776 }
1777
1778 if (vreg->logical_type != SPMI_REGULATOR_LOGICAL_TYPE_VS)
1779 vreg->ocp_irq = 0;
1780
1781 if (vreg->ocp_irq) {
1782 ret = devm_request_irq(dev, vreg->ocp_irq,
1783 spmi_regulator_vs_ocp_isr, IRQF_TRIGGER_RISING, "ocp",
1784 vreg);
1785 if (ret < 0) {
1786 dev_err(dev, "failed to request irq %d, ret=%d\n",
1787 vreg->ocp_irq, ret);
1788 return ret;
1789 }
1790
1791 INIT_DELAYED_WORK(&vreg->ocp_work, spmi_regulator_vs_ocp_work);
1792 }
1793
1794 return 0;
1795 }
1796
1797 static const struct spmi_regulator_data pm8941_regulators[] = {
1798 { "s1", 0x1400, "vdd_s1", },
1799 { "s2", 0x1700, "vdd_s2", },
1800 { "s3", 0x1a00, "vdd_s3", },
1801 { "s4", 0xa000, },
1802 { "l1", 0x4000, "vdd_l1_l3", },
1803 { "l2", 0x4100, "vdd_l2_lvs_1_2_3", },
1804 { "l3", 0x4200, "vdd_l1_l3", },
1805 { "l4", 0x4300, "vdd_l4_l11", },
1806 { "l5", 0x4400, "vdd_l5_l7", NULL, 0x0410 },
1807 { "l6", 0x4500, "vdd_l6_l12_l14_l15", },
1808 { "l7", 0x4600, "vdd_l5_l7", NULL, 0x0410 },
1809 { "l8", 0x4700, "vdd_l8_l16_l18_19", },
1810 { "l9", 0x4800, "vdd_l9_l10_l17_l22", },
1811 { "l10", 0x4900, "vdd_l9_l10_l17_l22", },
1812 { "l11", 0x4a00, "vdd_l4_l11", },
1813 { "l12", 0x4b00, "vdd_l6_l12_l14_l15", },
1814 { "l13", 0x4c00, "vdd_l13_l20_l23_l24", },
1815 { "l14", 0x4d00, "vdd_l6_l12_l14_l15", },
1816 { "l15", 0x4e00, "vdd_l6_l12_l14_l15", },
1817 { "l16", 0x4f00, "vdd_l8_l16_l18_19", },
1818 { "l17", 0x5000, "vdd_l9_l10_l17_l22", },
1819 { "l18", 0x5100, "vdd_l8_l16_l18_19", },
1820 { "l19", 0x5200, "vdd_l8_l16_l18_19", },
1821 { "l20", 0x5300, "vdd_l13_l20_l23_l24", },
1822 { "l21", 0x5400, "vdd_l21", },
1823 { "l22", 0x5500, "vdd_l9_l10_l17_l22", },
1824 { "l23", 0x5600, "vdd_l13_l20_l23_l24", },
1825 { "l24", 0x5700, "vdd_l13_l20_l23_l24", },
1826 { "lvs1", 0x8000, "vdd_l2_lvs_1_2_3", },
1827 { "lvs2", 0x8100, "vdd_l2_lvs_1_2_3", },
1828 { "lvs3", 0x8200, "vdd_l2_lvs_1_2_3", },
1829 { "5vs1", 0x8300, "vin_5vs", "ocp-5vs1", },
1830 { "5vs2", 0x8400, "vin_5vs", "ocp-5vs2", },
1831 { }
1832 };
1833
1834 static const struct spmi_regulator_data pm8841_regulators[] = {
1835 { "s1", 0x1400, "vdd_s1", },
1836 { "s2", 0x1700, "vdd_s2", NULL, 0x1c08 },
1837 { "s3", 0x1a00, "vdd_s3", },
1838 { "s4", 0x1d00, "vdd_s4", NULL, 0x1c08 },
1839 { "s5", 0x2000, "vdd_s5", NULL, 0x1c08 },
1840 { "s6", 0x2300, "vdd_s6", NULL, 0x1c08 },
1841 { "s7", 0x2600, "vdd_s7", NULL, 0x1c08 },
1842 { "s8", 0x2900, "vdd_s8", NULL, 0x1c08 },
1843 { }
1844 };
1845
1846 static const struct spmi_regulator_data pm8916_regulators[] = {
1847 { "s1", 0x1400, "vdd_s1", },
1848 { "s2", 0x1700, "vdd_s2", },
1849 { "s3", 0x1a00, "vdd_s3", },
1850 { "s4", 0x1d00, "vdd_s4", },
1851 { "l1", 0x4000, "vdd_l1_l3", },
1852 { "l2", 0x4100, "vdd_l2", },
1853 { "l3", 0x4200, "vdd_l1_l3", },
1854 { "l4", 0x4300, "vdd_l4_l5_l6", },
1855 { "l5", 0x4400, "vdd_l4_l5_l6", },
1856 { "l6", 0x4500, "vdd_l4_l5_l6", },
1857 { "l7", 0x4600, "vdd_l7", },
1858 { "l8", 0x4700, "vdd_l8_l11_l14_l15_l16", },
1859 { "l9", 0x4800, "vdd_l9_l10_l12_l13_l17_l18", },
1860 { "l10", 0x4900, "vdd_l9_l10_l12_l13_l17_l18", },
1861 { "l11", 0x4a00, "vdd_l8_l11_l14_l15_l16", },
1862 { "l12", 0x4b00, "vdd_l9_l10_l12_l13_l17_l18", },
1863 { "l13", 0x4c00, "vdd_l9_l10_l12_l13_l17_l18", },
1864 { "l14", 0x4d00, "vdd_l8_l11_l14_l15_l16", },
1865 { "l15", 0x4e00, "vdd_l8_l11_l14_l15_l16", },
1866 { "l16", 0x4f00, "vdd_l8_l11_l14_l15_l16", },
1867 { "l17", 0x5000, "vdd_l9_l10_l12_l13_l17_l18", },
1868 { "l18", 0x5100, "vdd_l9_l10_l12_l13_l17_l18", },
1869 { }
1870 };
1871
1872 static const struct spmi_regulator_data pm8950_regulators[] = {
1873 { "s1", 0x1400, "vdd_s1", },
1874 { "s2", 0x1700, "vdd_s2", },
1875 { "s3", 0x1a00, "vdd_s3", },
1876 { "s4", 0x1d00, "vdd_s4", },
1877 { "s5", 0x2000, "vdd_s5", },
1878 { "s6", 0x2300, "vdd_s6", },
1879 { "l1", 0x4000, "vdd_l1_l19", },
1880 { "l2", 0x4100, "vdd_l2_l23", },
1881 { "l3", 0x4200, "vdd_l3", },
1882 { "l4", 0x4300, "vdd_l4_l5_l6_l7_l16", },
1883 { "l5", 0x4400, "vdd_l4_l5_l6_l7_l16", },
1884 { "l6", 0x4500, "vdd_l4_l5_l6_l7_l16", },
1885 { "l7", 0x4600, "vdd_l4_l5_l6_l7_l16", },
1886 { "l8", 0x4700, "vdd_l8_l11_l12_l17_l22", },
1887 { "l9", 0x4800, "vdd_l9_l10_l13_l14_l15_l18", },
1888 { "l10", 0x4900, "vdd_l9_l10_l13_l14_l15_l18", },
1889 { "l11", 0x4a00, "vdd_l8_l11_l12_l17_l22", },
1890 { "l12", 0x4b00, "vdd_l8_l11_l12_l17_l22", },
1891 { "l13", 0x4c00, "vdd_l9_l10_l13_l14_l15_l18", },
1892 { "l14", 0x4d00, "vdd_l9_l10_l13_l14_l15_l18", },
1893 { "l15", 0x4e00, "vdd_l9_l10_l13_l14_l15_l18", },
1894 { "l16", 0x4f00, "vdd_l4_l5_l6_l7_l16", },
1895 { "l17", 0x5000, "vdd_l8_l11_l12_l17_l22", },
1896 { "l18", 0x5100, "vdd_l9_l10_l13_l14_l15_l18", },
1897 { "l19", 0x5200, "vdd_l1_l19", },
1898 { "l20", 0x5300, "vdd_l20", },
1899 { "l21", 0x5400, "vdd_l21", },
1900 { "l22", 0x5500, "vdd_l8_l11_l12_l17_l22", },
1901 { "l23", 0x5600, "vdd_l2_l23", },
1902 { }
1903 };
1904
1905 static const struct spmi_regulator_data pm8994_regulators[] = {
1906 { "s1", 0x1400, "vdd_s1", },
1907 { "s2", 0x1700, "vdd_s2", },
1908 { "s3", 0x1a00, "vdd_s3", },
1909 { "s4", 0x1d00, "vdd_s4", },
1910 { "s5", 0x2000, "vdd_s5", },
1911 { "s6", 0x2300, "vdd_s6", },
1912 { "s7", 0x2600, "vdd_s7", },
1913 { "s8", 0x2900, "vdd_s8", },
1914 { "s9", 0x2c00, "vdd_s9", },
1915 { "s10", 0x2f00, "vdd_s10", },
1916 { "s11", 0x3200, "vdd_s11", },
1917 { "s12", 0x3500, "vdd_s12", },
1918 { "l1", 0x4000, "vdd_l1", },
1919 { "l2", 0x4100, "vdd_l2_l26_l28", },
1920 { "l3", 0x4200, "vdd_l3_l11", },
1921 { "l4", 0x4300, "vdd_l4_l27_l31", },
1922 { "l5", 0x4400, "vdd_l5_l7", },
1923 { "l6", 0x4500, "vdd_l6_l12_l32", },
1924 { "l7", 0x4600, "vdd_l5_l7", },
1925 { "l8", 0x4700, "vdd_l8_l16_l30", },
1926 { "l9", 0x4800, "vdd_l9_l10_l18_l22", },
1927 { "l10", 0x4900, "vdd_l9_l10_l18_l22", },
1928 { "l11", 0x4a00, "vdd_l3_l11", },
1929 { "l12", 0x4b00, "vdd_l6_l12_l32", },
1930 { "l13", 0x4c00, "vdd_l13_l19_l23_l24", },
1931 { "l14", 0x4d00, "vdd_l14_l15", },
1932 { "l15", 0x4e00, "vdd_l14_l15", },
1933 { "l16", 0x4f00, "vdd_l8_l16_l30", },
1934 { "l17", 0x5000, "vdd_l17_l29", },
1935 { "l18", 0x5100, "vdd_l9_l10_l18_l22", },
1936 { "l19", 0x5200, "vdd_l13_l19_l23_l24", },
1937 { "l20", 0x5300, "vdd_l20_l21", },
1938 { "l21", 0x5400, "vdd_l20_l21", },
1939 { "l22", 0x5500, "vdd_l9_l10_l18_l22", },
1940 { "l23", 0x5600, "vdd_l13_l19_l23_l24", },
1941 { "l24", 0x5700, "vdd_l13_l19_l23_l24", },
1942 { "l25", 0x5800, "vdd_l25", },
1943 { "l26", 0x5900, "vdd_l2_l26_l28", },
1944 { "l27", 0x5a00, "vdd_l4_l27_l31", },
1945 { "l28", 0x5b00, "vdd_l2_l26_l28", },
1946 { "l29", 0x5c00, "vdd_l17_l29", },
1947 { "l30", 0x5d00, "vdd_l8_l16_l30", },
1948 { "l31", 0x5e00, "vdd_l4_l27_l31", },
1949 { "l32", 0x5f00, "vdd_l6_l12_l32", },
1950 { "lvs1", 0x8000, "vdd_lvs_1_2", },
1951 { "lvs2", 0x8100, "vdd_lvs_1_2", },
1952 { }
1953 };
1954
1955 static const struct spmi_regulator_data pmi8994_regulators[] = {
1956 { "s1", 0x1400, "vdd_s1", },
1957 { "s2", 0x1700, "vdd_s2", },
1958 { "s3", 0x1a00, "vdd_s3", },
1959 { "l1", 0x4000, "vdd_l1", },
1960 { }
1961 };
1962
1963 static const struct spmi_regulator_data pm8004_regulators[] = {
1964 { "s2", 0x1700, "vdd_s2", },
1965 { "s5", 0x2000, "vdd_s5", },
1966 { }
1967 };
1968
1969 static const struct spmi_regulator_data pm8005_regulators[] = {
1970 { "s1", 0x1400, "vdd_s1", },
1971 { "s2", 0x1700, "vdd_s2", },
1972 { "s3", 0x1a00, "vdd_s3", },
1973 { "s4", 0x1d00, "vdd_s4", },
1974 { }
1975 };
1976
1977 static const struct spmi_regulator_data pms405_regulators[] = {
1978 { "s3", 0x1a00, "vdd_s3"},
1979 { }
1980 };
1981
1982 static const struct of_device_id qcom_spmi_regulator_match[] = {
1983 { .compatible = "qcom,pm8004-regulators", .data = &pm8004_regulators },
1984 { .compatible = "qcom,pm8005-regulators", .data = &pm8005_regulators },
1985 { .compatible = "qcom,pm8841-regulators", .data = &pm8841_regulators },
1986 { .compatible = "qcom,pm8916-regulators", .data = &pm8916_regulators },
1987 { .compatible = "qcom,pm8941-regulators", .data = &pm8941_regulators },
1988 { .compatible = "qcom,pm8950-regulators", .data = &pm8950_regulators },
1989 { .compatible = "qcom,pm8994-regulators", .data = &pm8994_regulators },
1990 { .compatible = "qcom,pmi8994-regulators", .data = &pmi8994_regulators },
1991 { .compatible = "qcom,pms405-regulators", .data = &pms405_regulators },
1992 { }
1993 };
1994 MODULE_DEVICE_TABLE(of, qcom_spmi_regulator_match);
1995
1996 static int qcom_spmi_regulator_probe(struct platform_device *pdev)
1997 {
1998 const struct spmi_regulator_data *reg;
1999 const struct spmi_voltage_range *range;
2000 const struct of_device_id *match;
2001 struct regulator_config config = { };
2002 struct regulator_dev *rdev;
2003 struct spmi_regulator *vreg;
2004 struct regmap *regmap;
2005 const char *name;
2006 struct device *dev = &pdev->dev;
2007 struct device_node *node = pdev->dev.of_node;
2008 struct device_node *syscon, *reg_node;
2009 struct property *reg_prop;
2010 int ret, lenp;
2011 struct list_head *vreg_list;
2012
2013 vreg_list = devm_kzalloc(dev, sizeof(*vreg_list), GFP_KERNEL);
2014 if (!vreg_list)
2015 return -ENOMEM;
2016 INIT_LIST_HEAD(vreg_list);
2017 platform_set_drvdata(pdev, vreg_list);
2018
2019 regmap = dev_get_regmap(dev->parent, NULL);
2020 if (!regmap)
2021 return -ENODEV;
2022
2023 match = of_match_device(qcom_spmi_regulator_match, &pdev->dev);
2024 if (!match)
2025 return -ENODEV;
2026
2027 if (of_find_property(node, "qcom,saw-reg", &lenp)) {
2028 syscon = of_parse_phandle(node, "qcom,saw-reg", 0);
2029 saw_regmap = syscon_node_to_regmap(syscon);
2030 of_node_put(syscon);
2031 if (IS_ERR(saw_regmap))
2032 dev_err(dev, "ERROR reading SAW regmap\n");
2033 }
2034
2035 for (reg = match->data; reg->name; reg++) {
2036
2037 if (saw_regmap) {
2038 reg_node = of_get_child_by_name(node, reg->name);
2039 reg_prop = of_find_property(reg_node, "qcom,saw-slave",
2040 &lenp);
2041 of_node_put(reg_node);
2042 if (reg_prop)
2043 continue;
2044 }
2045
2046 vreg = devm_kzalloc(dev, sizeof(*vreg), GFP_KERNEL);
2047 if (!vreg)
2048 return -ENOMEM;
2049
2050 vreg->dev = dev;
2051 vreg->base = reg->base;
2052 vreg->regmap = regmap;
2053 if (reg->ocp) {
2054 vreg->ocp_irq = platform_get_irq_byname(pdev, reg->ocp);
2055 if (vreg->ocp_irq < 0) {
2056 ret = vreg->ocp_irq;
2057 goto err;
2058 }
2059 }
2060 vreg->desc.id = -1;
2061 vreg->desc.owner = THIS_MODULE;
2062 vreg->desc.type = REGULATOR_VOLTAGE;
2063 vreg->desc.enable_reg = reg->base + SPMI_COMMON_REG_ENABLE;
2064 vreg->desc.enable_mask = SPMI_COMMON_ENABLE_MASK;
2065 vreg->desc.enable_val = SPMI_COMMON_ENABLE;
2066 vreg->desc.name = name = reg->name;
2067 vreg->desc.supply_name = reg->supply;
2068 vreg->desc.of_match = reg->name;
2069 vreg->desc.of_parse_cb = spmi_regulator_of_parse;
2070 vreg->desc.of_map_mode = spmi_regulator_of_map_mode;
2071
2072 ret = spmi_regulator_match(vreg, reg->force_type);
2073 if (ret)
2074 continue;
2075
2076 if (saw_regmap) {
2077 reg_node = of_get_child_by_name(node, reg->name);
2078 reg_prop = of_find_property(reg_node, "qcom,saw-leader",
2079 &lenp);
2080 of_node_put(reg_node);
2081 if (reg_prop) {
2082 spmi_saw_ops = *(vreg->desc.ops);
2083 spmi_saw_ops.set_voltage_sel =
2084 spmi_regulator_saw_set_voltage;
2085 vreg->desc.ops = &spmi_saw_ops;
2086 }
2087 }
2088
2089 if (vreg->set_points && vreg->set_points->count == 1) {
2090 /* since there is only one range */
2091 range = vreg->set_points->range;
2092 vreg->desc.uV_step = range->step_uV;
2093 }
2094
2095 config.dev = dev;
2096 config.driver_data = vreg;
2097 config.regmap = regmap;
2098 rdev = devm_regulator_register(dev, &vreg->desc, &config);
2099 if (IS_ERR(rdev)) {
2100 dev_err(dev, "failed to register %s\n", name);
2101 ret = PTR_ERR(rdev);
2102 goto err;
2103 }
2104
2105 INIT_LIST_HEAD(&vreg->node);
2106 list_add(&vreg->node, vreg_list);
2107 }
2108
2109 return 0;
2110
2111 err:
2112 list_for_each_entry(vreg, vreg_list, node)
2113 if (vreg->ocp_irq)
2114 cancel_delayed_work_sync(&vreg->ocp_work);
2115 return ret;
2116 }
2117
2118 static int qcom_spmi_regulator_remove(struct platform_device *pdev)
2119 {
2120 struct spmi_regulator *vreg;
2121 struct list_head *vreg_list = platform_get_drvdata(pdev);
2122
2123 list_for_each_entry(vreg, vreg_list, node)
2124 if (vreg->ocp_irq)
2125 cancel_delayed_work_sync(&vreg->ocp_work);
2126
2127 return 0;
2128 }
2129
2130 static struct platform_driver qcom_spmi_regulator_driver = {
2131 .driver = {
2132 .name = "qcom-spmi-regulator",
2133 .of_match_table = qcom_spmi_regulator_match,
2134 },
2135 .probe = qcom_spmi_regulator_probe,
2136 .remove = qcom_spmi_regulator_remove,
2137 };
2138 module_platform_driver(qcom_spmi_regulator_driver);
2139
2140 MODULE_DESCRIPTION("Qualcomm SPMI PMIC regulator driver");
2141 MODULE_LICENSE("GPL v2");
2142 MODULE_ALIAS("platform:qcom-spmi-regulator");
Linux with added FPC-III support