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/devm-helpers.h>
9 #include <linux/err.h>
10 #include <linux/kernel.h>
11 #include <linux/interrupt.h>
12 #include <linux/bitops.h>
13 #include <linux/slab.h>
14 #include <linux/of.h>
15 #include <linux/of_device.h>
16 #include <linux/platform_device.h>
17 #include <linux/ktime.h>
18 #include <linux/regulator/driver.h>
19 #include <linux/regmap.h>
20 #include <linux/list.h>
21 #include <linux/mfd/syscon.h>
22 #include <linux/io.h>
23
24 /* Pin control enable input pins. */
25 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_NONE 0x00
26 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN0 0x01
27 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN1 0x02
28 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN2 0x04
29 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN3 0x08
30 #define SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT 0x10
31
32 /* Pin control high power mode input pins. */
33 #define SPMI_REGULATOR_PIN_CTRL_HPM_NONE 0x00
34 #define SPMI_REGULATOR_PIN_CTRL_HPM_EN0 0x01
35 #define SPMI_REGULATOR_PIN_CTRL_HPM_EN1 0x02
36 #define SPMI_REGULATOR_PIN_CTRL_HPM_EN2 0x04
37 #define SPMI_REGULATOR_PIN_CTRL_HPM_EN3 0x08
38 #define SPMI_REGULATOR_PIN_CTRL_HPM_SLEEP_B 0x10
39 #define SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT 0x20
40
41 /*
42 * Used with enable parameters to specify that hardware default register values
43 * should be left unaltered.
44 */
45 #define SPMI_REGULATOR_USE_HW_DEFAULT 2
46
47 /* Soft start strength of a voltage switch type regulator */
48 enum spmi_vs_soft_start_str {
49 SPMI_VS_SOFT_START_STR_0P05_UA = 0,
50 SPMI_VS_SOFT_START_STR_0P25_UA,
51 SPMI_VS_SOFT_START_STR_0P55_UA,
52 SPMI_VS_SOFT_START_STR_0P75_UA,
53 SPMI_VS_SOFT_START_STR_HW_DEFAULT,
54 };
55
56 /**
57 * struct spmi_regulator_init_data - spmi-regulator initialization data
58 * @pin_ctrl_enable: Bit mask specifying which hardware pins should be
59 * used to enable the regulator, if any
60 * Value should be an ORing of
61 * SPMI_REGULATOR_PIN_CTRL_ENABLE_* constants. If
62 * the bit specified by
63 * SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT is
64 * set, then pin control enable hardware registers
65 * will not be modified.
66 * @pin_ctrl_hpm: Bit mask specifying which hardware pins should be
67 * used to force the regulator into high power
68 * mode, if any
69 * Value should be an ORing of
70 * SPMI_REGULATOR_PIN_CTRL_HPM_* constants. If
71 * the bit specified by
72 * SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT is
73 * set, then pin control mode hardware registers
74 * will not be modified.
75 * @vs_soft_start_strength: This parameter sets the soft start strength for
76 * voltage switch type regulators. Its value
77 * should be one of SPMI_VS_SOFT_START_STR_*. If
78 * its value is SPMI_VS_SOFT_START_STR_HW_DEFAULT,
79 * then the soft start strength will be left at its
80 * default hardware value.
81 */
82 struct spmi_regulator_init_data {
83 unsigned pin_ctrl_enable;
84 unsigned pin_ctrl_hpm;
85 enum spmi_vs_soft_start_str vs_soft_start_strength;
86 };
87
88 /* These types correspond to unique register layouts. */
89 enum spmi_regulator_logical_type {
90 SPMI_REGULATOR_LOGICAL_TYPE_SMPS,
91 SPMI_REGULATOR_LOGICAL_TYPE_LDO,
92 SPMI_REGULATOR_LOGICAL_TYPE_VS,
93 SPMI_REGULATOR_LOGICAL_TYPE_BOOST,
94 SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS,
95 SPMI_REGULATOR_LOGICAL_TYPE_BOOST_BYP,
96 SPMI_REGULATOR_LOGICAL_TYPE_LN_LDO,
97 SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS,
98 SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS,
99 SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO,
100 SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS426,
101 SPMI_REGULATOR_LOGICAL_TYPE_HFS430,
102 };
103
104 enum spmi_regulator_type {
105 SPMI_REGULATOR_TYPE_BUCK = 0x03,
106 SPMI_REGULATOR_TYPE_LDO = 0x04,
107 SPMI_REGULATOR_TYPE_VS = 0x05,
108 SPMI_REGULATOR_TYPE_BOOST = 0x1b,
109 SPMI_REGULATOR_TYPE_FTS = 0x1c,
110 SPMI_REGULATOR_TYPE_BOOST_BYP = 0x1f,
111 SPMI_REGULATOR_TYPE_ULT_LDO = 0x21,
112 SPMI_REGULATOR_TYPE_ULT_BUCK = 0x22,
113 };
114
115 enum spmi_regulator_subtype {
116 SPMI_REGULATOR_SUBTYPE_GP_CTL = 0x08,
117 SPMI_REGULATOR_SUBTYPE_RF_CTL = 0x09,
118 SPMI_REGULATOR_SUBTYPE_N50 = 0x01,
119 SPMI_REGULATOR_SUBTYPE_N150 = 0x02,
120 SPMI_REGULATOR_SUBTYPE_N300 = 0x03,
121 SPMI_REGULATOR_SUBTYPE_N600 = 0x04,
122 SPMI_REGULATOR_SUBTYPE_N1200 = 0x05,
123 SPMI_REGULATOR_SUBTYPE_N600_ST = 0x06,
124 SPMI_REGULATOR_SUBTYPE_N1200_ST = 0x07,
125 SPMI_REGULATOR_SUBTYPE_N900_ST = 0x14,
126 SPMI_REGULATOR_SUBTYPE_N300_ST = 0x15,
127 SPMI_REGULATOR_SUBTYPE_P50 = 0x08,
128 SPMI_REGULATOR_SUBTYPE_P150 = 0x09,
129 SPMI_REGULATOR_SUBTYPE_P300 = 0x0a,
130 SPMI_REGULATOR_SUBTYPE_P600 = 0x0b,
131 SPMI_REGULATOR_SUBTYPE_P1200 = 0x0c,
132 SPMI_REGULATOR_SUBTYPE_LN = 0x10,
133 SPMI_REGULATOR_SUBTYPE_LV_P50 = 0x28,
134 SPMI_REGULATOR_SUBTYPE_LV_P150 = 0x29,
135 SPMI_REGULATOR_SUBTYPE_LV_P300 = 0x2a,
136 SPMI_REGULATOR_SUBTYPE_LV_P600 = 0x2b,
137 SPMI_REGULATOR_SUBTYPE_LV_P1200 = 0x2c,
138 SPMI_REGULATOR_SUBTYPE_LV_P450 = 0x2d,
139 SPMI_REGULATOR_SUBTYPE_HT_N300_ST = 0x30,
140 SPMI_REGULATOR_SUBTYPE_HT_N600_ST = 0x31,
141 SPMI_REGULATOR_SUBTYPE_HT_N1200_ST = 0x32,
142 SPMI_REGULATOR_SUBTYPE_HT_LVP150 = 0x3b,
143 SPMI_REGULATOR_SUBTYPE_HT_LVP300 = 0x3c,
144 SPMI_REGULATOR_SUBTYPE_L660_N300_ST = 0x42,
145 SPMI_REGULATOR_SUBTYPE_L660_N600_ST = 0x43,
146 SPMI_REGULATOR_SUBTYPE_L660_P50 = 0x46,
147 SPMI_REGULATOR_SUBTYPE_L660_P150 = 0x47,
148 SPMI_REGULATOR_SUBTYPE_L660_P600 = 0x49,
149 SPMI_REGULATOR_SUBTYPE_L660_LVP150 = 0x4d,
150 SPMI_REGULATOR_SUBTYPE_L660_LVP600 = 0x4f,
151 SPMI_REGULATOR_SUBTYPE_LV100 = 0x01,
152 SPMI_REGULATOR_SUBTYPE_LV300 = 0x02,
153 SPMI_REGULATOR_SUBTYPE_MV300 = 0x08,
154 SPMI_REGULATOR_SUBTYPE_MV500 = 0x09,
155 SPMI_REGULATOR_SUBTYPE_HDMI = 0x10,
156 SPMI_REGULATOR_SUBTYPE_OTG = 0x11,
157 SPMI_REGULATOR_SUBTYPE_5V_BOOST = 0x01,
158 SPMI_REGULATOR_SUBTYPE_FTS_CTL = 0x08,
159 SPMI_REGULATOR_SUBTYPE_FTS2p5_CTL = 0x09,
160 SPMI_REGULATOR_SUBTYPE_FTS426_CTL = 0x0a,
161 SPMI_REGULATOR_SUBTYPE_BB_2A = 0x01,
162 SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL1 = 0x0d,
163 SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL2 = 0x0e,
164 SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL3 = 0x0f,
165 SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL4 = 0x10,
166 SPMI_REGULATOR_SUBTYPE_HFS430 = 0x0a,
167 };
168
169 enum spmi_common_regulator_registers {
170 SPMI_COMMON_REG_DIG_MAJOR_REV = 0x01,
171 SPMI_COMMON_REG_TYPE = 0x04,
172 SPMI_COMMON_REG_SUBTYPE = 0x05,
173 SPMI_COMMON_REG_VOLTAGE_RANGE = 0x40,
174 SPMI_COMMON_REG_VOLTAGE_SET = 0x41,
175 SPMI_COMMON_REG_MODE = 0x45,
176 SPMI_COMMON_REG_ENABLE = 0x46,
177 SPMI_COMMON_REG_PULL_DOWN = 0x48,
178 SPMI_COMMON_REG_SOFT_START = 0x4c,
179 SPMI_COMMON_REG_STEP_CTRL = 0x61,
180 };
181
182 /*
183 * Second common register layout used by newer devices starting with ftsmps426
184 * Note that some of the registers from the first common layout remain
185 * unchanged and their definition is not duplicated.
186 */
187 enum spmi_ftsmps426_regulator_registers {
188 SPMI_FTSMPS426_REG_VOLTAGE_LSB = 0x40,
189 SPMI_FTSMPS426_REG_VOLTAGE_MSB = 0x41,
190 SPMI_FTSMPS426_REG_VOLTAGE_ULS_LSB = 0x68,
191 SPMI_FTSMPS426_REG_VOLTAGE_ULS_MSB = 0x69,
192 };
193
194 enum spmi_vs_registers {
195 SPMI_VS_REG_OCP = 0x4a,
196 SPMI_VS_REG_SOFT_START = 0x4c,
197 };
198
199 enum spmi_boost_registers {
200 SPMI_BOOST_REG_CURRENT_LIMIT = 0x4a,
201 };
202
203 enum spmi_boost_byp_registers {
204 SPMI_BOOST_BYP_REG_CURRENT_LIMIT = 0x4b,
205 };
206
207 enum spmi_saw3_registers {
208 SAW3_SECURE = 0x00,
209 SAW3_ID = 0x04,
210 SAW3_SPM_STS = 0x0C,
211 SAW3_AVS_STS = 0x10,
212 SAW3_PMIC_STS = 0x14,
213 SAW3_RST = 0x18,
214 SAW3_VCTL = 0x1C,
215 SAW3_AVS_CTL = 0x20,
216 SAW3_AVS_LIMIT = 0x24,
217 SAW3_AVS_DLY = 0x28,
218 SAW3_AVS_HYSTERESIS = 0x2C,
219 SAW3_SPM_STS2 = 0x38,
220 SAW3_SPM_PMIC_DATA_3 = 0x4C,
221 SAW3_VERSION = 0xFD0,
222 };
223
224 /* Used for indexing into ctrl_reg. These are offets from 0x40 */
225 enum spmi_common_control_register_index {
226 SPMI_COMMON_IDX_VOLTAGE_RANGE = 0,
227 SPMI_COMMON_IDX_VOLTAGE_SET = 1,
228 SPMI_COMMON_IDX_MODE = 5,
229 SPMI_COMMON_IDX_ENABLE = 6,
230 };
231
232 /* Common regulator control register layout */
233 #define SPMI_COMMON_ENABLE_MASK 0x80
234 #define SPMI_COMMON_ENABLE 0x80
235 #define SPMI_COMMON_DISABLE 0x00
236 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN3_MASK 0x08
237 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN2_MASK 0x04
238 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN1_MASK 0x02
239 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN0_MASK 0x01
240 #define SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK 0x0f
241
242 /* Common regulator mode register layout */
243 #define SPMI_COMMON_MODE_HPM_MASK 0x80
244 #define SPMI_COMMON_MODE_AUTO_MASK 0x40
245 #define SPMI_COMMON_MODE_BYPASS_MASK 0x20
246 #define SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK 0x10
247 #define SPMI_COMMON_MODE_FOLLOW_HW_EN3_MASK 0x08
248 #define SPMI_COMMON_MODE_FOLLOW_HW_EN2_MASK 0x04
249 #define SPMI_COMMON_MODE_FOLLOW_HW_EN1_MASK 0x02
250 #define SPMI_COMMON_MODE_FOLLOW_HW_EN0_MASK 0x01
251 #define SPMI_COMMON_MODE_FOLLOW_ALL_MASK 0x1f
252
253 #define SPMI_FTSMPS426_MODE_BYPASS_MASK 3
254 #define SPMI_FTSMPS426_MODE_RETENTION_MASK 4
255 #define SPMI_FTSMPS426_MODE_LPM_MASK 5
256 #define SPMI_FTSMPS426_MODE_AUTO_MASK 6
257 #define SPMI_FTSMPS426_MODE_HPM_MASK 7
258
259 #define SPMI_FTSMPS426_MODE_MASK 0x07
260
261 /* Common regulator pull down control register layout */
262 #define SPMI_COMMON_PULL_DOWN_ENABLE_MASK 0x80
263
264 /* LDO regulator current limit control register layout */
265 #define SPMI_LDO_CURRENT_LIMIT_ENABLE_MASK 0x80
266
267 /* LDO regulator soft start control register layout */
268 #define SPMI_LDO_SOFT_START_ENABLE_MASK 0x80
269
270 /* VS regulator over current protection control register layout */
271 #define SPMI_VS_OCP_OVERRIDE 0x01
272 #define SPMI_VS_OCP_NO_OVERRIDE 0x00
273
274 /* VS regulator soft start control register layout */
275 #define SPMI_VS_SOFT_START_ENABLE_MASK 0x80
276 #define SPMI_VS_SOFT_START_SEL_MASK 0x03
277
278 /* Boost regulator current limit control register layout */
279 #define SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK 0x80
280 #define SPMI_BOOST_CURRENT_LIMIT_MASK 0x07
281
282 #define SPMI_VS_OCP_DEFAULT_MAX_RETRIES 10
283 #define SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS 30
284 #define SPMI_VS_OCP_FALL_DELAY_US 90
285 #define SPMI_VS_OCP_FAULT_DELAY_US 20000
286
287 #define SPMI_FTSMPS_STEP_CTRL_STEP_MASK 0x18
288 #define SPMI_FTSMPS_STEP_CTRL_STEP_SHIFT 3
289 #define SPMI_FTSMPS_STEP_CTRL_DELAY_MASK 0x07
290 #define SPMI_FTSMPS_STEP_CTRL_DELAY_SHIFT 0
291
292 /* Clock rate in kHz of the FTSMPS regulator reference clock. */
293 #define SPMI_FTSMPS_CLOCK_RATE 19200
294
295 /* Minimum voltage stepper delay for each step. */
296 #define SPMI_FTSMPS_STEP_DELAY 8
297 #define SPMI_DEFAULT_STEP_DELAY 20
298
299 /*
300 * The ratio SPMI_FTSMPS_STEP_MARGIN_NUM/SPMI_FTSMPS_STEP_MARGIN_DEN is used to
301 * adjust the step rate in order to account for oscillator variance.
302 */
303 #define SPMI_FTSMPS_STEP_MARGIN_NUM 4
304 #define SPMI_FTSMPS_STEP_MARGIN_DEN 5
305
306 #define SPMI_FTSMPS426_STEP_CTRL_DELAY_MASK 0x03
307 #define SPMI_FTSMPS426_STEP_CTRL_DELAY_SHIFT 0
308
309 /* Clock rate in kHz of the FTSMPS426 regulator reference clock. */
310 #define SPMI_FTSMPS426_CLOCK_RATE 4800
311
312 #define SPMI_HFS430_CLOCK_RATE 1600
313
314 /* Minimum voltage stepper delay for each step. */
315 #define SPMI_FTSMPS426_STEP_DELAY 2
316
317 /*
318 * The ratio SPMI_FTSMPS426_STEP_MARGIN_NUM/SPMI_FTSMPS426_STEP_MARGIN_DEN is
319 * used to adjust the step rate in order to account for oscillator variance.
320 */
321 #define SPMI_FTSMPS426_STEP_MARGIN_NUM 10
322 #define SPMI_FTSMPS426_STEP_MARGIN_DEN 11
323
324
325 /* VSET value to decide the range of ULT SMPS */
326 #define ULT_SMPS_RANGE_SPLIT 0x60
327
328 /**
329 * struct spmi_voltage_range - regulator set point voltage mapping description
330 * @min_uV: Minimum programmable output voltage resulting from
331 * set point register value 0x00
332 * @max_uV: Maximum programmable output voltage
333 * @step_uV: Output voltage increase resulting from the set point
334 * register value increasing by 1
335 * @set_point_min_uV: Minimum allowed voltage
336 * @set_point_max_uV: Maximum allowed voltage. This may be tweaked in order
337 * to pick which range should be used in the case of
338 * overlapping set points.
339 * @n_voltages: Number of preferred voltage set points present in this
340 * range
341 * @range_sel: Voltage range register value corresponding to this range
342 *
343 * The following relationships must be true for the values used in this struct:
344 * (max_uV - min_uV) % step_uV == 0
345 * (set_point_min_uV - min_uV) % step_uV == 0*
346 * (set_point_max_uV - min_uV) % step_uV == 0*
347 * n_voltages = (set_point_max_uV - set_point_min_uV) / step_uV + 1
348 *
349 * *Note, set_point_min_uV == set_point_max_uV == 0 is allowed in order to
350 * specify that the voltage range has meaning, but is not preferred.
351 */
352 struct spmi_voltage_range {
353 int min_uV;
354 int max_uV;
355 int step_uV;
356 int set_point_min_uV;
357 int set_point_max_uV;
358 unsigned n_voltages;
359 u8 range_sel;
360 };
361
362 /*
363 * The ranges specified in the spmi_voltage_set_points struct must be listed
364 * so that range[i].set_point_max_uV < range[i+1].set_point_min_uV.
365 */
366 struct spmi_voltage_set_points {
367 struct spmi_voltage_range *range;
368 int count;
369 unsigned n_voltages;
370 };
371
372 struct spmi_regulator {
373 struct regulator_desc desc;
374 struct device *dev;
375 struct delayed_work ocp_work;
376 struct regmap *regmap;
377 struct spmi_voltage_set_points *set_points;
378 enum spmi_regulator_logical_type logical_type;
379 int ocp_irq;
380 int ocp_count;
381 int ocp_max_retries;
382 int ocp_retry_delay_ms;
383 int hpm_min_load;
384 int slew_rate;
385 ktime_t vs_enable_time;
386 u16 base;
387 struct list_head node;
388 };
389
390 struct spmi_regulator_mapping {
391 enum spmi_regulator_type type;
392 enum spmi_regulator_subtype subtype;
393 enum spmi_regulator_logical_type logical_type;
394 u32 revision_min;
395 u32 revision_max;
396 const struct regulator_ops *ops;
397 struct spmi_voltage_set_points *set_points;
398 int hpm_min_load;
399 };
400
401 struct spmi_regulator_data {
402 const char *name;
403 u16 base;
404 const char *supply;
405 const char *ocp;
406 u16 force_type;
407 };
408
409 #define SPMI_VREG(_type, _subtype, _dig_major_min, _dig_major_max, \
410 _logical_type, _ops_val, _set_points_val, _hpm_min_load) \
411 { \
412 .type = SPMI_REGULATOR_TYPE_##_type, \
413 .subtype = SPMI_REGULATOR_SUBTYPE_##_subtype, \
414 .revision_min = _dig_major_min, \
415 .revision_max = _dig_major_max, \
416 .logical_type = SPMI_REGULATOR_LOGICAL_TYPE_##_logical_type, \
417 .ops = &spmi_##_ops_val##_ops, \
418 .set_points = &_set_points_val##_set_points, \
419 .hpm_min_load = _hpm_min_load, \
420 }
421
422 #define SPMI_VREG_VS(_subtype, _dig_major_min, _dig_major_max) \
423 { \
424 .type = SPMI_REGULATOR_TYPE_VS, \
425 .subtype = SPMI_REGULATOR_SUBTYPE_##_subtype, \
426 .revision_min = _dig_major_min, \
427 .revision_max = _dig_major_max, \
428 .logical_type = SPMI_REGULATOR_LOGICAL_TYPE_VS, \
429 .ops = &spmi_vs_ops, \
430 }
431
432 #define SPMI_VOLTAGE_RANGE(_range_sel, _min_uV, _set_point_min_uV, \
433 _set_point_max_uV, _max_uV, _step_uV) \
434 { \
435 .min_uV = _min_uV, \
436 .max_uV = _max_uV, \
437 .set_point_min_uV = _set_point_min_uV, \
438 .set_point_max_uV = _set_point_max_uV, \
439 .step_uV = _step_uV, \
440 .range_sel = _range_sel, \
441 }
442
443 #define DEFINE_SPMI_SET_POINTS(name) \
444 struct spmi_voltage_set_points name##_set_points = { \
445 .range = name##_ranges, \
446 .count = ARRAY_SIZE(name##_ranges), \
447 }
448
449 /*
450 * These tables contain the physically available PMIC regulator voltage setpoint
451 * ranges. Where two ranges overlap in hardware, one of the ranges is trimmed
452 * to ensure that the setpoints available to software are monotonically
453 * increasing and unique. The set_voltage callback functions expect these
454 * properties to hold.
455 */
456 static struct spmi_voltage_range pldo_ranges[] = {
457 SPMI_VOLTAGE_RANGE(2, 750000, 750000, 1537500, 1537500, 12500),
458 SPMI_VOLTAGE_RANGE(3, 1500000, 1550000, 3075000, 3075000, 25000),
459 SPMI_VOLTAGE_RANGE(4, 1750000, 3100000, 4900000, 4900000, 50000),
460 };
461
462 static struct spmi_voltage_range nldo1_ranges[] = {
463 SPMI_VOLTAGE_RANGE(2, 750000, 750000, 1537500, 1537500, 12500),
464 };
465
466 static struct spmi_voltage_range nldo2_ranges[] = {
467 SPMI_VOLTAGE_RANGE(0, 375000, 0, 0, 1537500, 12500),
468 SPMI_VOLTAGE_RANGE(1, 375000, 375000, 768750, 768750, 6250),
469 SPMI_VOLTAGE_RANGE(2, 750000, 775000, 1537500, 1537500, 12500),
470 };
471
472 static struct spmi_voltage_range nldo3_ranges[] = {
473 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1537500, 1537500, 12500),
474 SPMI_VOLTAGE_RANGE(1, 375000, 0, 0, 1537500, 12500),
475 SPMI_VOLTAGE_RANGE(2, 750000, 0, 0, 1537500, 12500),
476 };
477
478 static struct spmi_voltage_range ln_ldo_ranges[] = {
479 SPMI_VOLTAGE_RANGE(1, 690000, 690000, 1110000, 1110000, 60000),
480 SPMI_VOLTAGE_RANGE(0, 1380000, 1380000, 2220000, 2220000, 120000),
481 };
482
483 static struct spmi_voltage_range smps_ranges[] = {
484 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1562500, 1562500, 12500),
485 SPMI_VOLTAGE_RANGE(1, 1550000, 1575000, 3125000, 3125000, 25000),
486 };
487
488 static struct spmi_voltage_range ftsmps_ranges[] = {
489 SPMI_VOLTAGE_RANGE(0, 0, 350000, 1275000, 1275000, 5000),
490 SPMI_VOLTAGE_RANGE(1, 0, 1280000, 2040000, 2040000, 10000),
491 };
492
493 static struct spmi_voltage_range ftsmps2p5_ranges[] = {
494 SPMI_VOLTAGE_RANGE(0, 80000, 350000, 1355000, 1355000, 5000),
495 SPMI_VOLTAGE_RANGE(1, 160000, 1360000, 2200000, 2200000, 10000),
496 };
497
498 static struct spmi_voltage_range ftsmps426_ranges[] = {
499 SPMI_VOLTAGE_RANGE(0, 0, 320000, 1352000, 1352000, 4000),
500 };
501
502 static struct spmi_voltage_range boost_ranges[] = {
503 SPMI_VOLTAGE_RANGE(0, 4000000, 4000000, 5550000, 5550000, 50000),
504 };
505
506 static struct spmi_voltage_range boost_byp_ranges[] = {
507 SPMI_VOLTAGE_RANGE(0, 2500000, 2500000, 5200000, 5650000, 50000),
508 };
509
510 static struct spmi_voltage_range ult_lo_smps_ranges[] = {
511 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1562500, 1562500, 12500),
512 SPMI_VOLTAGE_RANGE(1, 750000, 0, 0, 1525000, 25000),
513 };
514
515 static struct spmi_voltage_range ult_ho_smps_ranges[] = {
516 SPMI_VOLTAGE_RANGE(0, 1550000, 1550000, 2325000, 2325000, 25000),
517 };
518
519 static struct spmi_voltage_range ult_nldo_ranges[] = {
520 SPMI_VOLTAGE_RANGE(0, 375000, 375000, 1537500, 1537500, 12500),
521 };
522
523 static struct spmi_voltage_range ult_pldo_ranges[] = {
524 SPMI_VOLTAGE_RANGE(0, 1750000, 1750000, 3337500, 3337500, 12500),
525 };
526
527 static struct spmi_voltage_range pldo660_ranges[] = {
528 SPMI_VOLTAGE_RANGE(0, 1504000, 1504000, 3544000, 3544000, 8000),
529 };
530
531 static struct spmi_voltage_range nldo660_ranges[] = {
532 SPMI_VOLTAGE_RANGE(0, 320000, 320000, 1304000, 1304000, 8000),
533 };
534
535 static struct spmi_voltage_range ht_lvpldo_ranges[] = {
536 SPMI_VOLTAGE_RANGE(0, 1504000, 1504000, 2000000, 2000000, 8000),
537 };
538
539 static struct spmi_voltage_range ht_nldo_ranges[] = {
540 SPMI_VOLTAGE_RANGE(0, 312000, 312000, 1304000, 1304000, 8000),
541 };
542
543 static struct spmi_voltage_range hfs430_ranges[] = {
544 SPMI_VOLTAGE_RANGE(0, 320000, 320000, 2040000, 2040000, 8000),
545 };
546
547 static DEFINE_SPMI_SET_POINTS(pldo);
548 static DEFINE_SPMI_SET_POINTS(nldo1);
549 static DEFINE_SPMI_SET_POINTS(nldo2);
550 static DEFINE_SPMI_SET_POINTS(nldo3);
551 static DEFINE_SPMI_SET_POINTS(ln_ldo);
552 static DEFINE_SPMI_SET_POINTS(smps);
553 static DEFINE_SPMI_SET_POINTS(ftsmps);
554 static DEFINE_SPMI_SET_POINTS(ftsmps2p5);
555 static DEFINE_SPMI_SET_POINTS(ftsmps426);
556 static DEFINE_SPMI_SET_POINTS(boost);
557 static DEFINE_SPMI_SET_POINTS(boost_byp);
558 static DEFINE_SPMI_SET_POINTS(ult_lo_smps);
559 static DEFINE_SPMI_SET_POINTS(ult_ho_smps);
560 static DEFINE_SPMI_SET_POINTS(ult_nldo);
561 static DEFINE_SPMI_SET_POINTS(ult_pldo);
562 static DEFINE_SPMI_SET_POINTS(pldo660);
563 static DEFINE_SPMI_SET_POINTS(nldo660);
564 static DEFINE_SPMI_SET_POINTS(ht_lvpldo);
565 static DEFINE_SPMI_SET_POINTS(ht_nldo);
566 static DEFINE_SPMI_SET_POINTS(hfs430);
567
spmi_vreg_read(struct spmi_regulator * vreg,u16 addr,u8 * buf,int len)568 static inline int spmi_vreg_read(struct spmi_regulator *vreg, u16 addr, u8 *buf,
569 int len)
570 {
571 return regmap_bulk_read(vreg->regmap, vreg->base + addr, buf, len);
572 }
573
spmi_vreg_write(struct spmi_regulator * vreg,u16 addr,u8 * buf,int len)574 static inline int spmi_vreg_write(struct spmi_regulator *vreg, u16 addr,
575 u8 *buf, int len)
576 {
577 return regmap_bulk_write(vreg->regmap, vreg->base + addr, buf, len);
578 }
579
spmi_vreg_update_bits(struct spmi_regulator * vreg,u16 addr,u8 val,u8 mask)580 static int spmi_vreg_update_bits(struct spmi_regulator *vreg, u16 addr, u8 val,
581 u8 mask)
582 {
583 return regmap_update_bits(vreg->regmap, vreg->base + addr, mask, val);
584 }
585
spmi_regulator_vs_enable(struct regulator_dev * rdev)586 static int spmi_regulator_vs_enable(struct regulator_dev *rdev)
587 {
588 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
589
590 if (vreg->ocp_irq) {
591 vreg->ocp_count = 0;
592 vreg->vs_enable_time = ktime_get();
593 }
594
595 return regulator_enable_regmap(rdev);
596 }
597
spmi_regulator_vs_ocp(struct regulator_dev * rdev,int lim_uA,int severity,bool enable)598 static int spmi_regulator_vs_ocp(struct regulator_dev *rdev, int lim_uA,
599 int severity, bool enable)
600 {
601 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
602 u8 reg = SPMI_VS_OCP_OVERRIDE;
603
604 if (lim_uA || !enable || severity != REGULATOR_SEVERITY_PROT)
605 return -EINVAL;
606
607 return spmi_vreg_write(vreg, SPMI_VS_REG_OCP, ®, 1);
608 }
609
spmi_regulator_select_voltage(struct spmi_regulator * vreg,int min_uV,int max_uV)610 static int spmi_regulator_select_voltage(struct spmi_regulator *vreg,
611 int min_uV, int max_uV)
612 {
613 const struct spmi_voltage_range *range;
614 int uV = min_uV;
615 int lim_min_uV, lim_max_uV, i, range_id, range_max_uV;
616 int selector, voltage_sel;
617
618 /* Check if request voltage is outside of physically settable range. */
619 lim_min_uV = vreg->set_points->range[0].set_point_min_uV;
620 lim_max_uV =
621 vreg->set_points->range[vreg->set_points->count - 1].set_point_max_uV;
622
623 if (uV < lim_min_uV && max_uV >= lim_min_uV)
624 uV = lim_min_uV;
625
626 if (uV < lim_min_uV || uV > lim_max_uV) {
627 dev_err(vreg->dev,
628 "request v=[%d, %d] is outside possible v=[%d, %d]\n",
629 min_uV, max_uV, lim_min_uV, lim_max_uV);
630 return -EINVAL;
631 }
632
633 /* Find the range which uV is inside of. */
634 for (i = vreg->set_points->count - 1; i > 0; i--) {
635 range_max_uV = vreg->set_points->range[i - 1].set_point_max_uV;
636 if (uV > range_max_uV && range_max_uV > 0)
637 break;
638 }
639
640 range_id = i;
641 range = &vreg->set_points->range[range_id];
642
643 /*
644 * Force uV to be an allowed set point by applying a ceiling function to
645 * the uV value.
646 */
647 voltage_sel = DIV_ROUND_UP(uV - range->min_uV, range->step_uV);
648 uV = voltage_sel * range->step_uV + range->min_uV;
649
650 if (uV > max_uV) {
651 dev_err(vreg->dev,
652 "request v=[%d, %d] cannot be met by any set point; "
653 "next set point: %d\n",
654 min_uV, max_uV, uV);
655 return -EINVAL;
656 }
657
658 selector = 0;
659 for (i = 0; i < range_id; i++)
660 selector += vreg->set_points->range[i].n_voltages;
661 selector += (uV - range->set_point_min_uV) / range->step_uV;
662
663 return selector;
664 }
665
spmi_sw_selector_to_hw(struct spmi_regulator * vreg,unsigned selector,u8 * range_sel,u8 * voltage_sel)666 static int spmi_sw_selector_to_hw(struct spmi_regulator *vreg,
667 unsigned selector, u8 *range_sel,
668 u8 *voltage_sel)
669 {
670 const struct spmi_voltage_range *range, *end;
671 unsigned offset;
672
673 range = vreg->set_points->range;
674 end = range + vreg->set_points->count;
675
676 for (; range < end; range++) {
677 if (selector < range->n_voltages) {
678 /*
679 * hardware selectors between set point min and real
680 * min are invalid so we ignore them
681 */
682 offset = range->set_point_min_uV - range->min_uV;
683 offset /= range->step_uV;
684 *voltage_sel = selector + offset;
685 *range_sel = range->range_sel;
686 return 0;
687 }
688
689 selector -= range->n_voltages;
690 }
691
692 return -EINVAL;
693 }
694
spmi_hw_selector_to_sw(struct spmi_regulator * vreg,u8 hw_sel,const struct spmi_voltage_range * range)695 static int spmi_hw_selector_to_sw(struct spmi_regulator *vreg, u8 hw_sel,
696 const struct spmi_voltage_range *range)
697 {
698 unsigned sw_sel = 0;
699 unsigned offset, max_hw_sel;
700 const struct spmi_voltage_range *r = vreg->set_points->range;
701 const struct spmi_voltage_range *end = r + vreg->set_points->count;
702
703 for (; r < end; r++) {
704 if (r == range && range->n_voltages) {
705 /*
706 * hardware selectors between set point min and real
707 * min and between set point max and real max are
708 * invalid so we return an error if they're
709 * programmed into the hardware
710 */
711 offset = range->set_point_min_uV - range->min_uV;
712 offset /= range->step_uV;
713 if (hw_sel < offset)
714 return -EINVAL;
715
716 max_hw_sel = range->set_point_max_uV - range->min_uV;
717 max_hw_sel /= range->step_uV;
718 if (hw_sel > max_hw_sel)
719 return -EINVAL;
720
721 return sw_sel + hw_sel - offset;
722 }
723 sw_sel += r->n_voltages;
724 }
725
726 return -EINVAL;
727 }
728
729 static const struct spmi_voltage_range *
spmi_regulator_find_range(struct spmi_regulator * vreg)730 spmi_regulator_find_range(struct spmi_regulator *vreg)
731 {
732 u8 range_sel;
733 const struct spmi_voltage_range *range, *end;
734
735 range = vreg->set_points->range;
736 end = range + vreg->set_points->count;
737
738 spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, &range_sel, 1);
739
740 for (; range < end; range++)
741 if (range->range_sel == range_sel)
742 return range;
743
744 return NULL;
745 }
746
spmi_regulator_select_voltage_same_range(struct spmi_regulator * vreg,int min_uV,int max_uV)747 static int spmi_regulator_select_voltage_same_range(struct spmi_regulator *vreg,
748 int min_uV, int max_uV)
749 {
750 const struct spmi_voltage_range *range;
751 int uV = min_uV;
752 int i, selector;
753
754 range = spmi_regulator_find_range(vreg);
755 if (!range)
756 goto different_range;
757
758 if (uV < range->min_uV && max_uV >= range->min_uV)
759 uV = range->min_uV;
760
761 if (uV < range->min_uV || uV > range->max_uV) {
762 /* Current range doesn't support the requested voltage. */
763 goto different_range;
764 }
765
766 /*
767 * Force uV to be an allowed set point by applying a ceiling function to
768 * the uV value.
769 */
770 uV = DIV_ROUND_UP(uV - range->min_uV, range->step_uV);
771 uV = uV * range->step_uV + range->min_uV;
772
773 if (uV > max_uV) {
774 /*
775 * No set point in the current voltage range is within the
776 * requested min_uV to max_uV range.
777 */
778 goto different_range;
779 }
780
781 selector = 0;
782 for (i = 0; i < vreg->set_points->count; i++) {
783 if (uV >= vreg->set_points->range[i].set_point_min_uV
784 && uV <= vreg->set_points->range[i].set_point_max_uV) {
785 selector +=
786 (uV - vreg->set_points->range[i].set_point_min_uV)
787 / vreg->set_points->range[i].step_uV;
788 break;
789 }
790
791 selector += vreg->set_points->range[i].n_voltages;
792 }
793
794 if (selector >= vreg->set_points->n_voltages)
795 goto different_range;
796
797 return selector;
798
799 different_range:
800 return spmi_regulator_select_voltage(vreg, min_uV, max_uV);
801 }
802
spmi_regulator_common_map_voltage(struct regulator_dev * rdev,int min_uV,int max_uV)803 static int spmi_regulator_common_map_voltage(struct regulator_dev *rdev,
804 int min_uV, int max_uV)
805 {
806 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
807
808 /*
809 * Favor staying in the current voltage range if possible. This avoids
810 * voltage spikes that occur when changing the voltage range.
811 */
812 return spmi_regulator_select_voltage_same_range(vreg, min_uV, max_uV);
813 }
814
815 static int
spmi_regulator_common_set_voltage(struct regulator_dev * rdev,unsigned selector)816 spmi_regulator_common_set_voltage(struct regulator_dev *rdev, unsigned selector)
817 {
818 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
819 int ret;
820 u8 buf[2];
821 u8 range_sel, voltage_sel;
822
823 ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel);
824 if (ret)
825 return ret;
826
827 buf[0] = range_sel;
828 buf[1] = voltage_sel;
829 return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, buf, 2);
830 }
831
832 static int spmi_regulator_common_list_voltage(struct regulator_dev *rdev,
833 unsigned selector);
834
spmi_regulator_ftsmps426_set_voltage(struct regulator_dev * rdev,unsigned selector)835 static int spmi_regulator_ftsmps426_set_voltage(struct regulator_dev *rdev,
836 unsigned selector)
837 {
838 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
839 u8 buf[2];
840 int mV;
841
842 mV = spmi_regulator_common_list_voltage(rdev, selector) / 1000;
843
844 buf[0] = mV & 0xff;
845 buf[1] = mV >> 8;
846 return spmi_vreg_write(vreg, SPMI_FTSMPS426_REG_VOLTAGE_LSB, buf, 2);
847 }
848
spmi_regulator_set_voltage_time_sel(struct regulator_dev * rdev,unsigned int old_selector,unsigned int new_selector)849 static int spmi_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
850 unsigned int old_selector, unsigned int new_selector)
851 {
852 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
853 int diff_uV;
854
855 diff_uV = abs(spmi_regulator_common_list_voltage(rdev, new_selector) -
856 spmi_regulator_common_list_voltage(rdev, old_selector));
857
858 return DIV_ROUND_UP(diff_uV, vreg->slew_rate);
859 }
860
spmi_regulator_common_get_voltage(struct regulator_dev * rdev)861 static int spmi_regulator_common_get_voltage(struct regulator_dev *rdev)
862 {
863 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
864 const struct spmi_voltage_range *range;
865 u8 voltage_sel;
866
867 spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1);
868
869 range = spmi_regulator_find_range(vreg);
870 if (!range)
871 return -EINVAL;
872
873 return spmi_hw_selector_to_sw(vreg, voltage_sel, range);
874 }
875
spmi_regulator_ftsmps426_get_voltage(struct regulator_dev * rdev)876 static int spmi_regulator_ftsmps426_get_voltage(struct regulator_dev *rdev)
877 {
878 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
879 const struct spmi_voltage_range *range;
880 u8 buf[2];
881 int uV;
882
883 spmi_vreg_read(vreg, SPMI_FTSMPS426_REG_VOLTAGE_LSB, buf, 2);
884
885 uV = (((unsigned int)buf[1] << 8) | (unsigned int)buf[0]) * 1000;
886 range = vreg->set_points->range;
887
888 return (uV - range->set_point_min_uV) / range->step_uV;
889 }
890
spmi_regulator_single_map_voltage(struct regulator_dev * rdev,int min_uV,int max_uV)891 static int spmi_regulator_single_map_voltage(struct regulator_dev *rdev,
892 int min_uV, int max_uV)
893 {
894 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
895
896 return spmi_regulator_select_voltage(vreg, min_uV, max_uV);
897 }
898
spmi_regulator_single_range_set_voltage(struct regulator_dev * rdev,unsigned selector)899 static int spmi_regulator_single_range_set_voltage(struct regulator_dev *rdev,
900 unsigned selector)
901 {
902 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
903 u8 sel = selector;
904
905 /*
906 * Certain types of regulators do not have a range select register so
907 * only voltage set register needs to be written.
908 */
909 return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &sel, 1);
910 }
911
spmi_regulator_single_range_get_voltage(struct regulator_dev * rdev)912 static int spmi_regulator_single_range_get_voltage(struct regulator_dev *rdev)
913 {
914 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
915 u8 selector;
916 int ret;
917
918 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &selector, 1);
919 if (ret)
920 return ret;
921
922 return selector;
923 }
924
spmi_regulator_ult_lo_smps_set_voltage(struct regulator_dev * rdev,unsigned selector)925 static int spmi_regulator_ult_lo_smps_set_voltage(struct regulator_dev *rdev,
926 unsigned selector)
927 {
928 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
929 int ret;
930 u8 range_sel, voltage_sel;
931
932 ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel);
933 if (ret)
934 return ret;
935
936 /*
937 * Calculate VSET based on range
938 * In case of range 0: voltage_sel is a 7 bit value, can be written
939 * witout any modification.
940 * In case of range 1: voltage_sel is a 5 bit value, bits[7-5] set to
941 * [011].
942 */
943 if (range_sel == 1)
944 voltage_sel |= ULT_SMPS_RANGE_SPLIT;
945
946 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_VOLTAGE_SET,
947 voltage_sel, 0xff);
948 }
949
spmi_regulator_ult_lo_smps_get_voltage(struct regulator_dev * rdev)950 static int spmi_regulator_ult_lo_smps_get_voltage(struct regulator_dev *rdev)
951 {
952 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
953 const struct spmi_voltage_range *range;
954 u8 voltage_sel;
955
956 spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1);
957
958 range = spmi_regulator_find_range(vreg);
959 if (!range)
960 return -EINVAL;
961
962 if (range->range_sel == 1)
963 voltage_sel &= ~ULT_SMPS_RANGE_SPLIT;
964
965 return spmi_hw_selector_to_sw(vreg, voltage_sel, range);
966 }
967
spmi_regulator_common_list_voltage(struct regulator_dev * rdev,unsigned selector)968 static int spmi_regulator_common_list_voltage(struct regulator_dev *rdev,
969 unsigned selector)
970 {
971 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
972 int uV = 0;
973 int i;
974
975 if (selector >= vreg->set_points->n_voltages)
976 return 0;
977
978 for (i = 0; i < vreg->set_points->count; i++) {
979 if (selector < vreg->set_points->range[i].n_voltages) {
980 uV = selector * vreg->set_points->range[i].step_uV
981 + vreg->set_points->range[i].set_point_min_uV;
982 break;
983 }
984
985 selector -= vreg->set_points->range[i].n_voltages;
986 }
987
988 return uV;
989 }
990
991 static int
spmi_regulator_common_set_bypass(struct regulator_dev * rdev,bool enable)992 spmi_regulator_common_set_bypass(struct regulator_dev *rdev, bool enable)
993 {
994 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
995 u8 mask = SPMI_COMMON_MODE_BYPASS_MASK;
996 u8 val = 0;
997
998 if (enable)
999 val = mask;
1000
1001 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
1002 }
1003
1004 static int
spmi_regulator_common_get_bypass(struct regulator_dev * rdev,bool * enable)1005 spmi_regulator_common_get_bypass(struct regulator_dev *rdev, bool *enable)
1006 {
1007 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1008 u8 val;
1009 int ret;
1010
1011 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &val, 1);
1012 *enable = val & SPMI_COMMON_MODE_BYPASS_MASK;
1013
1014 return ret;
1015 }
1016
spmi_regulator_common_get_mode(struct regulator_dev * rdev)1017 static unsigned int spmi_regulator_common_get_mode(struct regulator_dev *rdev)
1018 {
1019 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1020 u8 reg;
1021
1022 spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, ®, 1);
1023
1024 reg &= SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK;
1025
1026 switch (reg) {
1027 case SPMI_COMMON_MODE_HPM_MASK:
1028 return REGULATOR_MODE_NORMAL;
1029 case SPMI_COMMON_MODE_AUTO_MASK:
1030 return REGULATOR_MODE_FAST;
1031 default:
1032 return REGULATOR_MODE_IDLE;
1033 }
1034 }
1035
spmi_regulator_ftsmps426_get_mode(struct regulator_dev * rdev)1036 static unsigned int spmi_regulator_ftsmps426_get_mode(struct regulator_dev *rdev)
1037 {
1038 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1039 u8 reg;
1040
1041 spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, ®, 1);
1042
1043 switch (reg) {
1044 case SPMI_FTSMPS426_MODE_HPM_MASK:
1045 return REGULATOR_MODE_NORMAL;
1046 case SPMI_FTSMPS426_MODE_AUTO_MASK:
1047 return REGULATOR_MODE_FAST;
1048 default:
1049 return REGULATOR_MODE_IDLE;
1050 }
1051 }
1052
1053 static int
spmi_regulator_common_set_mode(struct regulator_dev * rdev,unsigned int mode)1054 spmi_regulator_common_set_mode(struct regulator_dev *rdev, unsigned int mode)
1055 {
1056 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1057 u8 mask = SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK;
1058 u8 val;
1059
1060 switch (mode) {
1061 case REGULATOR_MODE_NORMAL:
1062 val = SPMI_COMMON_MODE_HPM_MASK;
1063 break;
1064 case REGULATOR_MODE_FAST:
1065 val = SPMI_COMMON_MODE_AUTO_MASK;
1066 break;
1067 default:
1068 val = 0;
1069 break;
1070 }
1071
1072 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
1073 }
1074
1075 static int
spmi_regulator_ftsmps426_set_mode(struct regulator_dev * rdev,unsigned int mode)1076 spmi_regulator_ftsmps426_set_mode(struct regulator_dev *rdev, unsigned int mode)
1077 {
1078 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1079 u8 mask = SPMI_FTSMPS426_MODE_MASK;
1080 u8 val;
1081
1082 switch (mode) {
1083 case REGULATOR_MODE_NORMAL:
1084 val = SPMI_FTSMPS426_MODE_HPM_MASK;
1085 break;
1086 case REGULATOR_MODE_FAST:
1087 val = SPMI_FTSMPS426_MODE_AUTO_MASK;
1088 break;
1089 case REGULATOR_MODE_IDLE:
1090 val = SPMI_FTSMPS426_MODE_LPM_MASK;
1091 break;
1092 default:
1093 return -EINVAL;
1094 }
1095
1096 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
1097 }
1098
1099 static int
spmi_regulator_common_set_load(struct regulator_dev * rdev,int load_uA)1100 spmi_regulator_common_set_load(struct regulator_dev *rdev, int load_uA)
1101 {
1102 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1103 unsigned int mode;
1104
1105 if (load_uA >= vreg->hpm_min_load)
1106 mode = REGULATOR_MODE_NORMAL;
1107 else
1108 mode = REGULATOR_MODE_IDLE;
1109
1110 return spmi_regulator_common_set_mode(rdev, mode);
1111 }
1112
spmi_regulator_common_set_pull_down(struct regulator_dev * rdev)1113 static int spmi_regulator_common_set_pull_down(struct regulator_dev *rdev)
1114 {
1115 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1116 unsigned int mask = SPMI_COMMON_PULL_DOWN_ENABLE_MASK;
1117
1118 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_PULL_DOWN,
1119 mask, mask);
1120 }
1121
spmi_regulator_common_set_soft_start(struct regulator_dev * rdev)1122 static int spmi_regulator_common_set_soft_start(struct regulator_dev *rdev)
1123 {
1124 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1125 unsigned int mask = SPMI_LDO_SOFT_START_ENABLE_MASK;
1126
1127 return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_SOFT_START,
1128 mask, mask);
1129 }
1130
spmi_regulator_set_ilim(struct regulator_dev * rdev,int ilim_uA)1131 static int spmi_regulator_set_ilim(struct regulator_dev *rdev, int ilim_uA)
1132 {
1133 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1134 enum spmi_regulator_logical_type type = vreg->logical_type;
1135 unsigned int current_reg;
1136 u8 reg;
1137 u8 mask = SPMI_BOOST_CURRENT_LIMIT_MASK |
1138 SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK;
1139 int max = (SPMI_BOOST_CURRENT_LIMIT_MASK + 1) * 500;
1140
1141 if (type == SPMI_REGULATOR_LOGICAL_TYPE_BOOST)
1142 current_reg = SPMI_BOOST_REG_CURRENT_LIMIT;
1143 else
1144 current_reg = SPMI_BOOST_BYP_REG_CURRENT_LIMIT;
1145
1146 if (ilim_uA > max || ilim_uA <= 0)
1147 return -EINVAL;
1148
1149 reg = (ilim_uA - 1) / 500;
1150 reg |= SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK;
1151
1152 return spmi_vreg_update_bits(vreg, current_reg, reg, mask);
1153 }
1154
spmi_regulator_vs_clear_ocp(struct spmi_regulator * vreg)1155 static int spmi_regulator_vs_clear_ocp(struct spmi_regulator *vreg)
1156 {
1157 int ret;
1158
1159 ret = spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE,
1160 SPMI_COMMON_DISABLE, SPMI_COMMON_ENABLE_MASK);
1161
1162 vreg->vs_enable_time = ktime_get();
1163
1164 ret = spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE,
1165 SPMI_COMMON_ENABLE, SPMI_COMMON_ENABLE_MASK);
1166
1167 return ret;
1168 }
1169
spmi_regulator_vs_ocp_work(struct work_struct * work)1170 static void spmi_regulator_vs_ocp_work(struct work_struct *work)
1171 {
1172 struct delayed_work *dwork = to_delayed_work(work);
1173 struct spmi_regulator *vreg
1174 = container_of(dwork, struct spmi_regulator, ocp_work);
1175
1176 spmi_regulator_vs_clear_ocp(vreg);
1177 }
1178
spmi_regulator_vs_ocp_isr(int irq,void * data)1179 static irqreturn_t spmi_regulator_vs_ocp_isr(int irq, void *data)
1180 {
1181 struct spmi_regulator *vreg = data;
1182 ktime_t ocp_irq_time;
1183 s64 ocp_trigger_delay_us;
1184
1185 ocp_irq_time = ktime_get();
1186 ocp_trigger_delay_us = ktime_us_delta(ocp_irq_time,
1187 vreg->vs_enable_time);
1188
1189 /*
1190 * Reset the OCP count if there is a large delay between switch enable
1191 * and when OCP triggers. This is indicative of a hotplug event as
1192 * opposed to a fault.
1193 */
1194 if (ocp_trigger_delay_us > SPMI_VS_OCP_FAULT_DELAY_US)
1195 vreg->ocp_count = 0;
1196
1197 /* Wait for switch output to settle back to 0 V after OCP triggered. */
1198 udelay(SPMI_VS_OCP_FALL_DELAY_US);
1199
1200 vreg->ocp_count++;
1201
1202 if (vreg->ocp_count == 1) {
1203 /* Immediately clear the over current condition. */
1204 spmi_regulator_vs_clear_ocp(vreg);
1205 } else if (vreg->ocp_count <= vreg->ocp_max_retries) {
1206 /* Schedule the over current clear task to run later. */
1207 schedule_delayed_work(&vreg->ocp_work,
1208 msecs_to_jiffies(vreg->ocp_retry_delay_ms) + 1);
1209 } else {
1210 dev_err(vreg->dev,
1211 "OCP triggered %d times; no further retries\n",
1212 vreg->ocp_count);
1213 }
1214
1215 return IRQ_HANDLED;
1216 }
1217
1218 #define SAW3_VCTL_DATA_MASK 0xFF
1219 #define SAW3_VCTL_CLEAR_MASK 0x700FF
1220 #define SAW3_AVS_CTL_EN_MASK 0x1
1221 #define SAW3_AVS_CTL_TGGL_MASK 0x8000000
1222 #define SAW3_AVS_CTL_CLEAR_MASK 0x7efc00
1223
1224 static struct regmap *saw_regmap;
1225
spmi_saw_set_vdd(void * data)1226 static void spmi_saw_set_vdd(void *data)
1227 {
1228 u32 vctl, data3, avs_ctl, pmic_sts;
1229 bool avs_enabled = false;
1230 unsigned long timeout;
1231 u8 voltage_sel = *(u8 *)data;
1232
1233 regmap_read(saw_regmap, SAW3_AVS_CTL, &avs_ctl);
1234 regmap_read(saw_regmap, SAW3_VCTL, &vctl);
1235 regmap_read(saw_regmap, SAW3_SPM_PMIC_DATA_3, &data3);
1236
1237 /* select the band */
1238 vctl &= ~SAW3_VCTL_CLEAR_MASK;
1239 vctl |= (u32)voltage_sel;
1240
1241 data3 &= ~SAW3_VCTL_CLEAR_MASK;
1242 data3 |= (u32)voltage_sel;
1243
1244 /* If AVS is enabled, switch it off during the voltage change */
1245 avs_enabled = SAW3_AVS_CTL_EN_MASK & avs_ctl;
1246 if (avs_enabled) {
1247 avs_ctl &= ~SAW3_AVS_CTL_TGGL_MASK;
1248 regmap_write(saw_regmap, SAW3_AVS_CTL, avs_ctl);
1249 }
1250
1251 regmap_write(saw_regmap, SAW3_RST, 1);
1252 regmap_write(saw_regmap, SAW3_VCTL, vctl);
1253 regmap_write(saw_regmap, SAW3_SPM_PMIC_DATA_3, data3);
1254
1255 timeout = jiffies + usecs_to_jiffies(100);
1256 do {
1257 regmap_read(saw_regmap, SAW3_PMIC_STS, &pmic_sts);
1258 pmic_sts &= SAW3_VCTL_DATA_MASK;
1259 if (pmic_sts == (u32)voltage_sel)
1260 break;
1261
1262 cpu_relax();
1263
1264 } while (time_before(jiffies, timeout));
1265
1266 /* After successful voltage change, switch the AVS back on */
1267 if (avs_enabled) {
1268 pmic_sts &= 0x3f;
1269 avs_ctl &= ~SAW3_AVS_CTL_CLEAR_MASK;
1270 avs_ctl |= ((pmic_sts - 4) << 10);
1271 avs_ctl |= (pmic_sts << 17);
1272 avs_ctl |= SAW3_AVS_CTL_TGGL_MASK;
1273 regmap_write(saw_regmap, SAW3_AVS_CTL, avs_ctl);
1274 }
1275 }
1276
1277 static int
spmi_regulator_saw_set_voltage(struct regulator_dev * rdev,unsigned selector)1278 spmi_regulator_saw_set_voltage(struct regulator_dev *rdev, unsigned selector)
1279 {
1280 struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1281 int ret;
1282 u8 range_sel, voltage_sel;
1283
1284 ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel);
1285 if (ret)
1286 return ret;
1287
1288 if (0 != range_sel) {
1289 dev_dbg(&rdev->dev, "range_sel = %02X voltage_sel = %02X", \
1290 range_sel, voltage_sel);
1291 return -EINVAL;
1292 }
1293
1294 /* Always do the SAW register writes on the first CPU */
1295 return smp_call_function_single(0, spmi_saw_set_vdd, \
1296 &voltage_sel, true);
1297 }
1298
1299 static struct regulator_ops spmi_saw_ops = {};
1300
1301 static const struct regulator_ops spmi_smps_ops = {
1302 .enable = regulator_enable_regmap,
1303 .disable = regulator_disable_regmap,
1304 .is_enabled = regulator_is_enabled_regmap,
1305 .set_voltage_sel = spmi_regulator_common_set_voltage,
1306 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
1307 .get_voltage_sel = spmi_regulator_common_get_voltage,
1308 .map_voltage = spmi_regulator_common_map_voltage,
1309 .list_voltage = spmi_regulator_common_list_voltage,
1310 .set_mode = spmi_regulator_common_set_mode,
1311 .get_mode = spmi_regulator_common_get_mode,
1312 .set_load = spmi_regulator_common_set_load,
1313 .set_pull_down = spmi_regulator_common_set_pull_down,
1314 };
1315
1316 static const struct regulator_ops spmi_ldo_ops = {
1317 .enable = regulator_enable_regmap,
1318 .disable = regulator_disable_regmap,
1319 .is_enabled = regulator_is_enabled_regmap,
1320 .set_voltage_sel = spmi_regulator_common_set_voltage,
1321 .get_voltage_sel = spmi_regulator_common_get_voltage,
1322 .map_voltage = spmi_regulator_common_map_voltage,
1323 .list_voltage = spmi_regulator_common_list_voltage,
1324 .set_mode = spmi_regulator_common_set_mode,
1325 .get_mode = spmi_regulator_common_get_mode,
1326 .set_load = spmi_regulator_common_set_load,
1327 .set_bypass = spmi_regulator_common_set_bypass,
1328 .get_bypass = spmi_regulator_common_get_bypass,
1329 .set_pull_down = spmi_regulator_common_set_pull_down,
1330 .set_soft_start = spmi_regulator_common_set_soft_start,
1331 };
1332
1333 static const struct regulator_ops spmi_ln_ldo_ops = {
1334 .enable = regulator_enable_regmap,
1335 .disable = regulator_disable_regmap,
1336 .is_enabled = regulator_is_enabled_regmap,
1337 .set_voltage_sel = spmi_regulator_common_set_voltage,
1338 .get_voltage_sel = spmi_regulator_common_get_voltage,
1339 .map_voltage = spmi_regulator_common_map_voltage,
1340 .list_voltage = spmi_regulator_common_list_voltage,
1341 .set_bypass = spmi_regulator_common_set_bypass,
1342 .get_bypass = spmi_regulator_common_get_bypass,
1343 };
1344
1345 static const struct regulator_ops spmi_vs_ops = {
1346 .enable = spmi_regulator_vs_enable,
1347 .disable = regulator_disable_regmap,
1348 .is_enabled = regulator_is_enabled_regmap,
1349 .set_pull_down = spmi_regulator_common_set_pull_down,
1350 .set_soft_start = spmi_regulator_common_set_soft_start,
1351 .set_over_current_protection = spmi_regulator_vs_ocp,
1352 .set_mode = spmi_regulator_common_set_mode,
1353 .get_mode = spmi_regulator_common_get_mode,
1354 };
1355
1356 static const struct regulator_ops spmi_boost_ops = {
1357 .enable = regulator_enable_regmap,
1358 .disable = regulator_disable_regmap,
1359 .is_enabled = regulator_is_enabled_regmap,
1360 .set_voltage_sel = spmi_regulator_single_range_set_voltage,
1361 .get_voltage_sel = spmi_regulator_single_range_get_voltage,
1362 .map_voltage = spmi_regulator_single_map_voltage,
1363 .list_voltage = spmi_regulator_common_list_voltage,
1364 .set_input_current_limit = spmi_regulator_set_ilim,
1365 };
1366
1367 static const struct regulator_ops spmi_ftsmps_ops = {
1368 .enable = regulator_enable_regmap,
1369 .disable = regulator_disable_regmap,
1370 .is_enabled = regulator_is_enabled_regmap,
1371 .set_voltage_sel = spmi_regulator_common_set_voltage,
1372 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
1373 .get_voltage_sel = spmi_regulator_common_get_voltage,
1374 .map_voltage = spmi_regulator_common_map_voltage,
1375 .list_voltage = spmi_regulator_common_list_voltage,
1376 .set_mode = spmi_regulator_common_set_mode,
1377 .get_mode = spmi_regulator_common_get_mode,
1378 .set_load = spmi_regulator_common_set_load,
1379 .set_pull_down = spmi_regulator_common_set_pull_down,
1380 };
1381
1382 static const struct regulator_ops spmi_ult_lo_smps_ops = {
1383 .enable = regulator_enable_regmap,
1384 .disable = regulator_disable_regmap,
1385 .is_enabled = regulator_is_enabled_regmap,
1386 .set_voltage_sel = spmi_regulator_ult_lo_smps_set_voltage,
1387 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
1388 .get_voltage_sel = spmi_regulator_ult_lo_smps_get_voltage,
1389 .list_voltage = spmi_regulator_common_list_voltage,
1390 .set_mode = spmi_regulator_common_set_mode,
1391 .get_mode = spmi_regulator_common_get_mode,
1392 .set_load = spmi_regulator_common_set_load,
1393 .set_pull_down = spmi_regulator_common_set_pull_down,
1394 };
1395
1396 static const struct regulator_ops spmi_ult_ho_smps_ops = {
1397 .enable = regulator_enable_regmap,
1398 .disable = regulator_disable_regmap,
1399 .is_enabled = regulator_is_enabled_regmap,
1400 .set_voltage_sel = spmi_regulator_single_range_set_voltage,
1401 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
1402 .get_voltage_sel = spmi_regulator_single_range_get_voltage,
1403 .map_voltage = spmi_regulator_single_map_voltage,
1404 .list_voltage = spmi_regulator_common_list_voltage,
1405 .set_mode = spmi_regulator_common_set_mode,
1406 .get_mode = spmi_regulator_common_get_mode,
1407 .set_load = spmi_regulator_common_set_load,
1408 .set_pull_down = spmi_regulator_common_set_pull_down,
1409 };
1410
1411 static const struct regulator_ops spmi_ult_ldo_ops = {
1412 .enable = regulator_enable_regmap,
1413 .disable = regulator_disable_regmap,
1414 .is_enabled = regulator_is_enabled_regmap,
1415 .set_voltage_sel = spmi_regulator_single_range_set_voltage,
1416 .get_voltage_sel = spmi_regulator_single_range_get_voltage,
1417 .map_voltage = spmi_regulator_single_map_voltage,
1418 .list_voltage = spmi_regulator_common_list_voltage,
1419 .set_mode = spmi_regulator_common_set_mode,
1420 .get_mode = spmi_regulator_common_get_mode,
1421 .set_load = spmi_regulator_common_set_load,
1422 .set_bypass = spmi_regulator_common_set_bypass,
1423 .get_bypass = spmi_regulator_common_get_bypass,
1424 .set_pull_down = spmi_regulator_common_set_pull_down,
1425 .set_soft_start = spmi_regulator_common_set_soft_start,
1426 };
1427
1428 static const struct regulator_ops spmi_ftsmps426_ops = {
1429 .enable = regulator_enable_regmap,
1430 .disable = regulator_disable_regmap,
1431 .is_enabled = regulator_is_enabled_regmap,
1432 .set_voltage_sel = spmi_regulator_ftsmps426_set_voltage,
1433 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
1434 .get_voltage_sel = spmi_regulator_ftsmps426_get_voltage,
1435 .map_voltage = spmi_regulator_single_map_voltage,
1436 .list_voltage = spmi_regulator_common_list_voltage,
1437 .set_mode = spmi_regulator_ftsmps426_set_mode,
1438 .get_mode = spmi_regulator_ftsmps426_get_mode,
1439 .set_load = spmi_regulator_common_set_load,
1440 .set_pull_down = spmi_regulator_common_set_pull_down,
1441 };
1442
1443 static const struct regulator_ops spmi_hfs430_ops = {
1444 .enable = regulator_enable_regmap,
1445 .disable = regulator_disable_regmap,
1446 .is_enabled = regulator_is_enabled_regmap,
1447 .set_voltage_sel = spmi_regulator_ftsmps426_set_voltage,
1448 .set_voltage_time_sel = spmi_regulator_set_voltage_time_sel,
1449 .get_voltage_sel = spmi_regulator_ftsmps426_get_voltage,
1450 .map_voltage = spmi_regulator_single_map_voltage,
1451 .list_voltage = spmi_regulator_common_list_voltage,
1452 .set_mode = spmi_regulator_ftsmps426_set_mode,
1453 .get_mode = spmi_regulator_ftsmps426_get_mode,
1454 };
1455
1456 /* Maximum possible digital major revision value */
1457 #define INF 0xFF
1458
1459 static const struct spmi_regulator_mapping supported_regulators[] = {
1460 /* type subtype dig_min dig_max ltype ops setpoints hpm_min */
1461 SPMI_VREG(BUCK, GP_CTL, 0, INF, SMPS, smps, smps, 100000),
1462 SPMI_VREG(BUCK, HFS430, 0, INF, HFS430, hfs430, hfs430, 10000),
1463 SPMI_VREG(LDO, N300, 0, INF, LDO, ldo, nldo1, 10000),
1464 SPMI_VREG(LDO, N600, 0, 0, LDO, ldo, nldo2, 10000),
1465 SPMI_VREG(LDO, N1200, 0, 0, LDO, ldo, nldo2, 10000),
1466 SPMI_VREG(LDO, N600, 1, INF, LDO, ldo, nldo3, 10000),
1467 SPMI_VREG(LDO, N1200, 1, INF, LDO, ldo, nldo3, 10000),
1468 SPMI_VREG(LDO, N600_ST, 0, 0, LDO, ldo, nldo2, 10000),
1469 SPMI_VREG(LDO, N1200_ST, 0, 0, LDO, ldo, nldo2, 10000),
1470 SPMI_VREG(LDO, N600_ST, 1, INF, LDO, ldo, nldo3, 10000),
1471 SPMI_VREG(LDO, N1200_ST, 1, INF, LDO, ldo, nldo3, 10000),
1472 SPMI_VREG(LDO, P50, 0, INF, LDO, ldo, pldo, 5000),
1473 SPMI_VREG(LDO, P150, 0, INF, LDO, ldo, pldo, 10000),
1474 SPMI_VREG(LDO, P300, 0, INF, LDO, ldo, pldo, 10000),
1475 SPMI_VREG(LDO, P600, 0, INF, LDO, ldo, pldo, 10000),
1476 SPMI_VREG(LDO, P1200, 0, INF, LDO, ldo, pldo, 10000),
1477 SPMI_VREG(LDO, LN, 0, INF, LN_LDO, ln_ldo, ln_ldo, 0),
1478 SPMI_VREG(LDO, LV_P50, 0, INF, LDO, ldo, pldo, 5000),
1479 SPMI_VREG(LDO, LV_P150, 0, INF, LDO, ldo, pldo, 10000),
1480 SPMI_VREG(LDO, LV_P300, 0, INF, LDO, ldo, pldo, 10000),
1481 SPMI_VREG(LDO, LV_P600, 0, INF, LDO, ldo, pldo, 10000),
1482 SPMI_VREG(LDO, LV_P1200, 0, INF, LDO, ldo, pldo, 10000),
1483 SPMI_VREG(LDO, HT_N300_ST, 0, INF, FTSMPS426, ftsmps426,
1484 ht_nldo, 30000),
1485 SPMI_VREG(LDO, HT_N600_ST, 0, INF, FTSMPS426, ftsmps426,
1486 ht_nldo, 30000),
1487 SPMI_VREG(LDO, HT_N1200_ST, 0, INF, FTSMPS426, ftsmps426,
1488 ht_nldo, 30000),
1489 SPMI_VREG(LDO, HT_LVP150, 0, INF, FTSMPS426, ftsmps426,
1490 ht_lvpldo, 10000),
1491 SPMI_VREG(LDO, HT_LVP300, 0, INF, FTSMPS426, ftsmps426,
1492 ht_lvpldo, 10000),
1493 SPMI_VREG(LDO, L660_N300_ST, 0, INF, FTSMPS426, ftsmps426,
1494 nldo660, 10000),
1495 SPMI_VREG(LDO, L660_N600_ST, 0, INF, FTSMPS426, ftsmps426,
1496 nldo660, 10000),
1497 SPMI_VREG(LDO, L660_P50, 0, INF, FTSMPS426, ftsmps426,
1498 pldo660, 10000),
1499 SPMI_VREG(LDO, L660_P150, 0, INF, FTSMPS426, ftsmps426,
1500 pldo660, 10000),
1501 SPMI_VREG(LDO, L660_P600, 0, INF, FTSMPS426, ftsmps426,
1502 pldo660, 10000),
1503 SPMI_VREG(LDO, L660_LVP150, 0, INF, FTSMPS426, ftsmps426,
1504 ht_lvpldo, 10000),
1505 SPMI_VREG(LDO, L660_LVP600, 0, INF, FTSMPS426, ftsmps426,
1506 ht_lvpldo, 10000),
1507 SPMI_VREG_VS(LV100, 0, INF),
1508 SPMI_VREG_VS(LV300, 0, INF),
1509 SPMI_VREG_VS(MV300, 0, INF),
1510 SPMI_VREG_VS(MV500, 0, INF),
1511 SPMI_VREG_VS(HDMI, 0, INF),
1512 SPMI_VREG_VS(OTG, 0, INF),
1513 SPMI_VREG(BOOST, 5V_BOOST, 0, INF, BOOST, boost, boost, 0),
1514 SPMI_VREG(FTS, FTS_CTL, 0, INF, FTSMPS, ftsmps, ftsmps, 100000),
1515 SPMI_VREG(FTS, FTS2p5_CTL, 0, INF, FTSMPS, ftsmps, ftsmps2p5, 100000),
1516 SPMI_VREG(FTS, FTS426_CTL, 0, INF, FTSMPS426, ftsmps426, ftsmps426, 100000),
1517 SPMI_VREG(BOOST_BYP, BB_2A, 0, INF, BOOST_BYP, boost, boost_byp, 0),
1518 SPMI_VREG(ULT_BUCK, ULT_HF_CTL1, 0, INF, ULT_LO_SMPS, ult_lo_smps,
1519 ult_lo_smps, 100000),
1520 SPMI_VREG(ULT_BUCK, ULT_HF_CTL2, 0, INF, ULT_LO_SMPS, ult_lo_smps,
1521 ult_lo_smps, 100000),
1522 SPMI_VREG(ULT_BUCK, ULT_HF_CTL3, 0, INF, ULT_LO_SMPS, ult_lo_smps,
1523 ult_lo_smps, 100000),
1524 SPMI_VREG(ULT_BUCK, ULT_HF_CTL4, 0, INF, ULT_HO_SMPS, ult_ho_smps,
1525 ult_ho_smps, 100000),
1526 SPMI_VREG(ULT_LDO, N300_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
1527 SPMI_VREG(ULT_LDO, N600_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
1528 SPMI_VREG(ULT_LDO, N900_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
1529 SPMI_VREG(ULT_LDO, N1200_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
1530 SPMI_VREG(ULT_LDO, LV_P50, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1531 SPMI_VREG(ULT_LDO, LV_P150, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1532 SPMI_VREG(ULT_LDO, LV_P300, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1533 SPMI_VREG(ULT_LDO, LV_P450, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1534 SPMI_VREG(ULT_LDO, P600, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1535 SPMI_VREG(ULT_LDO, P300, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1536 SPMI_VREG(ULT_LDO, P150, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1537 SPMI_VREG(ULT_LDO, P50, 0, INF, ULT_LDO, ult_ldo, ult_pldo, 5000),
1538 };
1539
spmi_calculate_num_voltages(struct spmi_voltage_set_points * points)1540 static void spmi_calculate_num_voltages(struct spmi_voltage_set_points *points)
1541 {
1542 unsigned int n;
1543 struct spmi_voltage_range *range = points->range;
1544
1545 for (; range < points->range + points->count; range++) {
1546 n = 0;
1547 if (range->set_point_max_uV) {
1548 n = range->set_point_max_uV - range->set_point_min_uV;
1549 n = (n / range->step_uV) + 1;
1550 }
1551 range->n_voltages = n;
1552 points->n_voltages += n;
1553 }
1554 }
1555
spmi_regulator_match(struct spmi_regulator * vreg,u16 force_type)1556 static int spmi_regulator_match(struct spmi_regulator *vreg, u16 force_type)
1557 {
1558 const struct spmi_regulator_mapping *mapping;
1559 int ret, i;
1560 u32 dig_major_rev;
1561 u8 version[SPMI_COMMON_REG_SUBTYPE - SPMI_COMMON_REG_DIG_MAJOR_REV + 1];
1562 u8 type, subtype;
1563
1564 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_DIG_MAJOR_REV, version,
1565 ARRAY_SIZE(version));
1566 if (ret) {
1567 dev_dbg(vreg->dev, "could not read version registers\n");
1568 return ret;
1569 }
1570 dig_major_rev = version[SPMI_COMMON_REG_DIG_MAJOR_REV
1571 - SPMI_COMMON_REG_DIG_MAJOR_REV];
1572
1573 if (!force_type) {
1574 type = version[SPMI_COMMON_REG_TYPE -
1575 SPMI_COMMON_REG_DIG_MAJOR_REV];
1576 subtype = version[SPMI_COMMON_REG_SUBTYPE -
1577 SPMI_COMMON_REG_DIG_MAJOR_REV];
1578 } else {
1579 type = force_type >> 8;
1580 subtype = force_type;
1581 }
1582
1583 for (i = 0; i < ARRAY_SIZE(supported_regulators); i++) {
1584 mapping = &supported_regulators[i];
1585 if (mapping->type == type && mapping->subtype == subtype
1586 && mapping->revision_min <= dig_major_rev
1587 && mapping->revision_max >= dig_major_rev)
1588 goto found;
1589 }
1590
1591 dev_err(vreg->dev,
1592 "unsupported regulator: name=%s type=0x%02X, subtype=0x%02X, dig major rev=0x%02X\n",
1593 vreg->desc.name, type, subtype, dig_major_rev);
1594
1595 return -ENODEV;
1596
1597 found:
1598 vreg->logical_type = mapping->logical_type;
1599 vreg->set_points = mapping->set_points;
1600 vreg->hpm_min_load = mapping->hpm_min_load;
1601 vreg->desc.ops = mapping->ops;
1602
1603 if (mapping->set_points) {
1604 if (!mapping->set_points->n_voltages)
1605 spmi_calculate_num_voltages(mapping->set_points);
1606 vreg->desc.n_voltages = mapping->set_points->n_voltages;
1607 }
1608
1609 return 0;
1610 }
1611
spmi_regulator_init_slew_rate(struct spmi_regulator * vreg)1612 static int spmi_regulator_init_slew_rate(struct spmi_regulator *vreg)
1613 {
1614 int ret;
1615 u8 reg = 0;
1616 int step, delay, slew_rate, step_delay;
1617 const struct spmi_voltage_range *range;
1618
1619 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_STEP_CTRL, ®, 1);
1620 if (ret) {
1621 dev_err(vreg->dev, "spmi read failed, ret=%d\n", ret);
1622 return ret;
1623 }
1624
1625 range = spmi_regulator_find_range(vreg);
1626 if (!range)
1627 return -EINVAL;
1628
1629 switch (vreg->logical_type) {
1630 case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS:
1631 step_delay = SPMI_FTSMPS_STEP_DELAY;
1632 break;
1633 default:
1634 step_delay = SPMI_DEFAULT_STEP_DELAY;
1635 break;
1636 }
1637
1638 step = reg & SPMI_FTSMPS_STEP_CTRL_STEP_MASK;
1639 step >>= SPMI_FTSMPS_STEP_CTRL_STEP_SHIFT;
1640
1641 delay = reg & SPMI_FTSMPS_STEP_CTRL_DELAY_MASK;
1642 delay >>= SPMI_FTSMPS_STEP_CTRL_DELAY_SHIFT;
1643
1644 /* slew_rate has units of uV/us */
1645 slew_rate = SPMI_FTSMPS_CLOCK_RATE * range->step_uV * (1 << step);
1646 slew_rate /= 1000 * (step_delay << delay);
1647 slew_rate *= SPMI_FTSMPS_STEP_MARGIN_NUM;
1648 slew_rate /= SPMI_FTSMPS_STEP_MARGIN_DEN;
1649
1650 /* Ensure that the slew rate is greater than 0 */
1651 vreg->slew_rate = max(slew_rate, 1);
1652
1653 return ret;
1654 }
1655
spmi_regulator_init_slew_rate_ftsmps426(struct spmi_regulator * vreg,int clock_rate)1656 static int spmi_regulator_init_slew_rate_ftsmps426(struct spmi_regulator *vreg,
1657 int clock_rate)
1658 {
1659 int ret;
1660 u8 reg = 0;
1661 int delay, slew_rate;
1662 const struct spmi_voltage_range *range = &vreg->set_points->range[0];
1663
1664 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_STEP_CTRL, ®, 1);
1665 if (ret) {
1666 dev_err(vreg->dev, "spmi read failed, ret=%d\n", ret);
1667 return ret;
1668 }
1669
1670 delay = reg & SPMI_FTSMPS426_STEP_CTRL_DELAY_MASK;
1671 delay >>= SPMI_FTSMPS426_STEP_CTRL_DELAY_SHIFT;
1672
1673 /* slew_rate has units of uV/us */
1674 slew_rate = clock_rate * range->step_uV;
1675 slew_rate /= 1000 * (SPMI_FTSMPS426_STEP_DELAY << delay);
1676 slew_rate *= SPMI_FTSMPS426_STEP_MARGIN_NUM;
1677 slew_rate /= SPMI_FTSMPS426_STEP_MARGIN_DEN;
1678
1679 /* Ensure that the slew rate is greater than 0 */
1680 vreg->slew_rate = max(slew_rate, 1);
1681
1682 return ret;
1683 }
1684
spmi_regulator_init_registers(struct spmi_regulator * vreg,const struct spmi_regulator_init_data * data)1685 static int spmi_regulator_init_registers(struct spmi_regulator *vreg,
1686 const struct spmi_regulator_init_data *data)
1687 {
1688 int ret;
1689 enum spmi_regulator_logical_type type;
1690 u8 ctrl_reg[8], reg, mask;
1691
1692 type = vreg->logical_type;
1693
1694 ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8);
1695 if (ret)
1696 return ret;
1697
1698 /* Set up enable pin control. */
1699 if (!(data->pin_ctrl_enable & SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT)) {
1700 switch (type) {
1701 case SPMI_REGULATOR_LOGICAL_TYPE_SMPS:
1702 case SPMI_REGULATOR_LOGICAL_TYPE_LDO:
1703 case SPMI_REGULATOR_LOGICAL_TYPE_VS:
1704 ctrl_reg[SPMI_COMMON_IDX_ENABLE] &=
1705 ~SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK;
1706 ctrl_reg[SPMI_COMMON_IDX_ENABLE] |=
1707 data->pin_ctrl_enable & SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK;
1708 break;
1709 default:
1710 break;
1711 }
1712 }
1713
1714 /* Set up mode pin control. */
1715 if (!(data->pin_ctrl_hpm & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) {
1716 switch (type) {
1717 case SPMI_REGULATOR_LOGICAL_TYPE_SMPS:
1718 case SPMI_REGULATOR_LOGICAL_TYPE_LDO:
1719 ctrl_reg[SPMI_COMMON_IDX_MODE] &=
1720 ~SPMI_COMMON_MODE_FOLLOW_ALL_MASK;
1721 ctrl_reg[SPMI_COMMON_IDX_MODE] |=
1722 data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_ALL_MASK;
1723 break;
1724 case SPMI_REGULATOR_LOGICAL_TYPE_VS:
1725 case SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS:
1726 case SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS:
1727 case SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO:
1728 ctrl_reg[SPMI_COMMON_IDX_MODE] &=
1729 ~SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
1730 ctrl_reg[SPMI_COMMON_IDX_MODE] |=
1731 data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
1732 break;
1733 default:
1734 break;
1735 }
1736 }
1737
1738 /* Write back any control register values that were modified. */
1739 ret = spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8);
1740 if (ret)
1741 return ret;
1742
1743 /* Set soft start strength and over current protection for VS. */
1744 if (type == SPMI_REGULATOR_LOGICAL_TYPE_VS) {
1745 if (data->vs_soft_start_strength
1746 != SPMI_VS_SOFT_START_STR_HW_DEFAULT) {
1747 reg = data->vs_soft_start_strength
1748 & SPMI_VS_SOFT_START_SEL_MASK;
1749 mask = SPMI_VS_SOFT_START_SEL_MASK;
1750 return spmi_vreg_update_bits(vreg,
1751 SPMI_VS_REG_SOFT_START,
1752 reg, mask);
1753 }
1754 }
1755
1756 return 0;
1757 }
1758
spmi_regulator_get_dt_config(struct spmi_regulator * vreg,struct device_node * node,struct spmi_regulator_init_data * data)1759 static void spmi_regulator_get_dt_config(struct spmi_regulator *vreg,
1760 struct device_node *node, struct spmi_regulator_init_data *data)
1761 {
1762 /*
1763 * Initialize configuration parameters to use hardware default in case
1764 * no value is specified via device tree.
1765 */
1766 data->pin_ctrl_enable = SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT;
1767 data->pin_ctrl_hpm = SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT;
1768 data->vs_soft_start_strength = SPMI_VS_SOFT_START_STR_HW_DEFAULT;
1769
1770 /* These bindings are optional, so it is okay if they aren't found. */
1771 of_property_read_u32(node, "qcom,ocp-max-retries",
1772 &vreg->ocp_max_retries);
1773 of_property_read_u32(node, "qcom,ocp-retry-delay",
1774 &vreg->ocp_retry_delay_ms);
1775 of_property_read_u32(node, "qcom,pin-ctrl-enable",
1776 &data->pin_ctrl_enable);
1777 of_property_read_u32(node, "qcom,pin-ctrl-hpm", &data->pin_ctrl_hpm);
1778 of_property_read_u32(node, "qcom,vs-soft-start-strength",
1779 &data->vs_soft_start_strength);
1780 }
1781
spmi_regulator_of_map_mode(unsigned int mode)1782 static unsigned int spmi_regulator_of_map_mode(unsigned int mode)
1783 {
1784 if (mode == 1)
1785 return REGULATOR_MODE_NORMAL;
1786 if (mode == 2)
1787 return REGULATOR_MODE_FAST;
1788
1789 return REGULATOR_MODE_IDLE;
1790 }
1791
spmi_regulator_of_parse(struct device_node * node,const struct regulator_desc * desc,struct regulator_config * config)1792 static int spmi_regulator_of_parse(struct device_node *node,
1793 const struct regulator_desc *desc,
1794 struct regulator_config *config)
1795 {
1796 struct spmi_regulator_init_data data = { };
1797 struct spmi_regulator *vreg = config->driver_data;
1798 struct device *dev = config->dev;
1799 int ret;
1800
1801 spmi_regulator_get_dt_config(vreg, node, &data);
1802
1803 if (!vreg->ocp_max_retries)
1804 vreg->ocp_max_retries = SPMI_VS_OCP_DEFAULT_MAX_RETRIES;
1805 if (!vreg->ocp_retry_delay_ms)
1806 vreg->ocp_retry_delay_ms = SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS;
1807
1808 ret = spmi_regulator_init_registers(vreg, &data);
1809 if (ret) {
1810 dev_err(dev, "common initialization failed, ret=%d\n", ret);
1811 return ret;
1812 }
1813
1814 switch (vreg->logical_type) {
1815 case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS:
1816 case SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS:
1817 case SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS:
1818 case SPMI_REGULATOR_LOGICAL_TYPE_SMPS:
1819 ret = spmi_regulator_init_slew_rate(vreg);
1820 if (ret)
1821 return ret;
1822 break;
1823 case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS426:
1824 ret = spmi_regulator_init_slew_rate_ftsmps426(vreg,
1825 SPMI_FTSMPS426_CLOCK_RATE);
1826 if (ret)
1827 return ret;
1828 break;
1829 case SPMI_REGULATOR_LOGICAL_TYPE_HFS430:
1830 ret = spmi_regulator_init_slew_rate_ftsmps426(vreg,
1831 SPMI_HFS430_CLOCK_RATE);
1832 if (ret)
1833 return ret;
1834 break;
1835 default:
1836 break;
1837 }
1838
1839 if (vreg->logical_type != SPMI_REGULATOR_LOGICAL_TYPE_VS)
1840 vreg->ocp_irq = 0;
1841
1842 if (vreg->ocp_irq) {
1843 ret = devm_request_irq(dev, vreg->ocp_irq,
1844 spmi_regulator_vs_ocp_isr, IRQF_TRIGGER_RISING, "ocp",
1845 vreg);
1846 if (ret < 0) {
1847 dev_err(dev, "failed to request irq %d, ret=%d\n",
1848 vreg->ocp_irq, ret);
1849 return ret;
1850 }
1851
1852 ret = devm_delayed_work_autocancel(dev, &vreg->ocp_work,
1853 spmi_regulator_vs_ocp_work);
1854 if (ret)
1855 return ret;
1856 }
1857
1858 return 0;
1859 }
1860
1861 static const struct spmi_regulator_data pm8941_regulators[] = {
1862 { "s1", 0x1400, "vdd_s1", },
1863 { "s2", 0x1700, "vdd_s2", },
1864 { "s3", 0x1a00, "vdd_s3", },
1865 { "s4", 0xa000, },
1866 { "l1", 0x4000, "vdd_l1_l3", },
1867 { "l2", 0x4100, "vdd_l2_lvs_1_2_3", },
1868 { "l3", 0x4200, "vdd_l1_l3", },
1869 { "l4", 0x4300, "vdd_l4_l11", },
1870 { "l5", 0x4400, "vdd_l5_l7", NULL, 0x0410 },
1871 { "l6", 0x4500, "vdd_l6_l12_l14_l15", },
1872 { "l7", 0x4600, "vdd_l5_l7", NULL, 0x0410 },
1873 { "l8", 0x4700, "vdd_l8_l16_l18_19", },
1874 { "l9", 0x4800, "vdd_l9_l10_l17_l22", },
1875 { "l10", 0x4900, "vdd_l9_l10_l17_l22", },
1876 { "l11", 0x4a00, "vdd_l4_l11", },
1877 { "l12", 0x4b00, "vdd_l6_l12_l14_l15", },
1878 { "l13", 0x4c00, "vdd_l13_l20_l23_l24", },
1879 { "l14", 0x4d00, "vdd_l6_l12_l14_l15", },
1880 { "l15", 0x4e00, "vdd_l6_l12_l14_l15", },
1881 { "l16", 0x4f00, "vdd_l8_l16_l18_19", },
1882 { "l17", 0x5000, "vdd_l9_l10_l17_l22", },
1883 { "l18", 0x5100, "vdd_l8_l16_l18_19", },
1884 { "l19", 0x5200, "vdd_l8_l16_l18_19", },
1885 { "l20", 0x5300, "vdd_l13_l20_l23_l24", },
1886 { "l21", 0x5400, "vdd_l21", },
1887 { "l22", 0x5500, "vdd_l9_l10_l17_l22", },
1888 { "l23", 0x5600, "vdd_l13_l20_l23_l24", },
1889 { "l24", 0x5700, "vdd_l13_l20_l23_l24", },
1890 { "lvs1", 0x8000, "vdd_l2_lvs_1_2_3", },
1891 { "lvs2", 0x8100, "vdd_l2_lvs_1_2_3", },
1892 { "lvs3", 0x8200, "vdd_l2_lvs_1_2_3", },
1893 { "5vs1", 0x8300, "vin_5vs", "ocp-5vs1", },
1894 { "5vs2", 0x8400, "vin_5vs", "ocp-5vs2", },
1895 { }
1896 };
1897
1898 static const struct spmi_regulator_data pm8226_regulators[] = {
1899 { "s1", 0x1400, "vdd_s1", },
1900 { "s2", 0x1700, "vdd_s2", },
1901 { "s3", 0x1a00, "vdd_s3", },
1902 { "s4", 0x1d00, "vdd_s4", },
1903 { "s5", 0x2000, "vdd_s5", },
1904 { "l1", 0x4000, "vdd_l1_l2_l4_l5", },
1905 { "l2", 0x4100, "vdd_l1_l2_l4_l5", },
1906 { "l3", 0x4200, "vdd_l3_l24_l26", },
1907 { "l4", 0x4300, "vdd_l1_l2_l4_l5", },
1908 { "l5", 0x4400, "vdd_l1_l2_l4_l5", },
1909 { "l6", 0x4500, "vdd_l6_l7_l8_l9_l27", },
1910 { "l7", 0x4600, "vdd_l6_l7_l8_l9_l27", },
1911 { "l8", 0x4700, "vdd_l6_l7_l8_l9_l27", },
1912 { "l9", 0x4800, "vdd_l6_l7_l8_l9_l27", },
1913 { "l10", 0x4900, "vdd_l10_l11_l13", },
1914 { "l11", 0x4a00, "vdd_l10_l11_l13", },
1915 { "l12", 0x4b00, "vdd_l12_l14", },
1916 { "l13", 0x4c00, "vdd_l10_l11_l13", },
1917 { "l14", 0x4d00, "vdd_l12_l14", },
1918 { "l15", 0x4e00, "vdd_l15_l16_l17_l18", },
1919 { "l16", 0x4f00, "vdd_l15_l16_l17_l18", },
1920 { "l17", 0x5000, "vdd_l15_l16_l17_l18", },
1921 { "l18", 0x5100, "vdd_l15_l16_l17_l18", },
1922 { "l19", 0x5200, "vdd_l19_l20_l21_l22_l23_l28", },
1923 { "l20", 0x5300, "vdd_l19_l20_l21_l22_l23_l28", },
1924 { "l21", 0x5400, "vdd_l19_l20_l21_l22_l23_l28", },
1925 { "l22", 0x5500, "vdd_l19_l20_l21_l22_l23_l28", },
1926 { "l23", 0x5600, "vdd_l19_l20_l21_l22_l23_l28", },
1927 { "l24", 0x5700, "vdd_l3_l24_l26", },
1928 { "l25", 0x5800, "vdd_l25", },
1929 { "l26", 0x5900, "vdd_l3_l24_l26", },
1930 { "l27", 0x5a00, "vdd_l6_l7_l8_l9_l27", },
1931 { "l28", 0x5b00, "vdd_l19_l20_l21_l22_l23_l28", },
1932 { "lvs1", 0x8000, "vdd_lvs1", },
1933 { }
1934 };
1935
1936 static const struct spmi_regulator_data pm8841_regulators[] = {
1937 { "s1", 0x1400, "vdd_s1", },
1938 { "s2", 0x1700, "vdd_s2", NULL, 0x1c08 },
1939 { "s3", 0x1a00, "vdd_s3", },
1940 { "s4", 0x1d00, "vdd_s4", NULL, 0x1c08 },
1941 { "s5", 0x2000, "vdd_s5", NULL, 0x1c08 },
1942 { "s6", 0x2300, "vdd_s6", NULL, 0x1c08 },
1943 { "s7", 0x2600, "vdd_s7", NULL, 0x1c08 },
1944 { "s8", 0x2900, "vdd_s8", NULL, 0x1c08 },
1945 { }
1946 };
1947
1948 static const struct spmi_regulator_data pm8916_regulators[] = {
1949 { "s1", 0x1400, "vdd_s1", },
1950 { "s2", 0x1700, "vdd_s2", },
1951 { "s3", 0x1a00, "vdd_s3", },
1952 { "s4", 0x1d00, "vdd_s4", },
1953 { "l1", 0x4000, "vdd_l1_l3", },
1954 { "l2", 0x4100, "vdd_l2", },
1955 { "l3", 0x4200, "vdd_l1_l3", },
1956 { "l4", 0x4300, "vdd_l4_l5_l6", },
1957 { "l5", 0x4400, "vdd_l4_l5_l6", },
1958 { "l6", 0x4500, "vdd_l4_l5_l6", },
1959 { "l7", 0x4600, "vdd_l7", },
1960 { "l8", 0x4700, "vdd_l8_l11_l14_l15_l16", },
1961 { "l9", 0x4800, "vdd_l9_l10_l12_l13_l17_l18", },
1962 { "l10", 0x4900, "vdd_l9_l10_l12_l13_l17_l18", },
1963 { "l11", 0x4a00, "vdd_l8_l11_l14_l15_l16", },
1964 { "l12", 0x4b00, "vdd_l9_l10_l12_l13_l17_l18", },
1965 { "l13", 0x4c00, "vdd_l9_l10_l12_l13_l17_l18", },
1966 { "l14", 0x4d00, "vdd_l8_l11_l14_l15_l16", },
1967 { "l15", 0x4e00, "vdd_l8_l11_l14_l15_l16", },
1968 { "l16", 0x4f00, "vdd_l8_l11_l14_l15_l16", },
1969 { "l17", 0x5000, "vdd_l9_l10_l12_l13_l17_l18", },
1970 { "l18", 0x5100, "vdd_l9_l10_l12_l13_l17_l18", },
1971 { }
1972 };
1973
1974 static const struct spmi_regulator_data pm8950_regulators[] = {
1975 { "s1", 0x1400, "vdd_s1", },
1976 { "s2", 0x1700, "vdd_s2", },
1977 { "s3", 0x1a00, "vdd_s3", },
1978 { "s4", 0x1d00, "vdd_s4", },
1979 { "s5", 0x2000, "vdd_s5", },
1980 { "s6", 0x2300, "vdd_s6", },
1981 { "l1", 0x4000, "vdd_l1_l19", },
1982 { "l2", 0x4100, "vdd_l2_l23", },
1983 { "l3", 0x4200, "vdd_l3", },
1984 { "l4", 0x4300, "vdd_l4_l5_l6_l7_l16", },
1985 { "l5", 0x4400, "vdd_l4_l5_l6_l7_l16", },
1986 { "l6", 0x4500, "vdd_l4_l5_l6_l7_l16", },
1987 { "l7", 0x4600, "vdd_l4_l5_l6_l7_l16", },
1988 { "l8", 0x4700, "vdd_l8_l11_l12_l17_l22", },
1989 { "l9", 0x4800, "vdd_l9_l10_l13_l14_l15_l18", },
1990 { "l10", 0x4900, "vdd_l9_l10_l13_l14_l15_l18", },
1991 { "l11", 0x4a00, "vdd_l8_l11_l12_l17_l22", },
1992 { "l12", 0x4b00, "vdd_l8_l11_l12_l17_l22", },
1993 { "l13", 0x4c00, "vdd_l9_l10_l13_l14_l15_l18", },
1994 { "l14", 0x4d00, "vdd_l9_l10_l13_l14_l15_l18", },
1995 { "l15", 0x4e00, "vdd_l9_l10_l13_l14_l15_l18", },
1996 { "l16", 0x4f00, "vdd_l4_l5_l6_l7_l16", },
1997 { "l17", 0x5000, "vdd_l8_l11_l12_l17_l22", },
1998 { "l18", 0x5100, "vdd_l9_l10_l13_l14_l15_l18", },
1999 { "l19", 0x5200, "vdd_l1_l19", },
2000 { "l20", 0x5300, "vdd_l20", },
2001 { "l21", 0x5400, "vdd_l21", },
2002 { "l22", 0x5500, "vdd_l8_l11_l12_l17_l22", },
2003 { "l23", 0x5600, "vdd_l2_l23", },
2004 { }
2005 };
2006
2007 static const struct spmi_regulator_data pm8994_regulators[] = {
2008 { "s1", 0x1400, "vdd_s1", },
2009 { "s2", 0x1700, "vdd_s2", },
2010 { "s3", 0x1a00, "vdd_s3", },
2011 { "s4", 0x1d00, "vdd_s4", },
2012 { "s5", 0x2000, "vdd_s5", },
2013 { "s6", 0x2300, "vdd_s6", },
2014 { "s7", 0x2600, "vdd_s7", },
2015 { "s8", 0x2900, "vdd_s8", },
2016 { "s9", 0x2c00, "vdd_s9", },
2017 { "s10", 0x2f00, "vdd_s10", },
2018 { "s11", 0x3200, "vdd_s11", },
2019 { "s12", 0x3500, "vdd_s12", },
2020 { "l1", 0x4000, "vdd_l1", },
2021 { "l2", 0x4100, "vdd_l2_l26_l28", },
2022 { "l3", 0x4200, "vdd_l3_l11", },
2023 { "l4", 0x4300, "vdd_l4_l27_l31", },
2024 { "l5", 0x4400, "vdd_l5_l7", },
2025 { "l6", 0x4500, "vdd_l6_l12_l32", },
2026 { "l7", 0x4600, "vdd_l5_l7", },
2027 { "l8", 0x4700, "vdd_l8_l16_l30", },
2028 { "l9", 0x4800, "vdd_l9_l10_l18_l22", },
2029 { "l10", 0x4900, "vdd_l9_l10_l18_l22", },
2030 { "l11", 0x4a00, "vdd_l3_l11", },
2031 { "l12", 0x4b00, "vdd_l6_l12_l32", },
2032 { "l13", 0x4c00, "vdd_l13_l19_l23_l24", },
2033 { "l14", 0x4d00, "vdd_l14_l15", },
2034 { "l15", 0x4e00, "vdd_l14_l15", },
2035 { "l16", 0x4f00, "vdd_l8_l16_l30", },
2036 { "l17", 0x5000, "vdd_l17_l29", },
2037 { "l18", 0x5100, "vdd_l9_l10_l18_l22", },
2038 { "l19", 0x5200, "vdd_l13_l19_l23_l24", },
2039 { "l20", 0x5300, "vdd_l20_l21", },
2040 { "l21", 0x5400, "vdd_l20_l21", },
2041 { "l22", 0x5500, "vdd_l9_l10_l18_l22", },
2042 { "l23", 0x5600, "vdd_l13_l19_l23_l24", },
2043 { "l24", 0x5700, "vdd_l13_l19_l23_l24", },
2044 { "l25", 0x5800, "vdd_l25", },
2045 { "l26", 0x5900, "vdd_l2_l26_l28", },
2046 { "l27", 0x5a00, "vdd_l4_l27_l31", },
2047 { "l28", 0x5b00, "vdd_l2_l26_l28", },
2048 { "l29", 0x5c00, "vdd_l17_l29", },
2049 { "l30", 0x5d00, "vdd_l8_l16_l30", },
2050 { "l31", 0x5e00, "vdd_l4_l27_l31", },
2051 { "l32", 0x5f00, "vdd_l6_l12_l32", },
2052 { "lvs1", 0x8000, "vdd_lvs_1_2", },
2053 { "lvs2", 0x8100, "vdd_lvs_1_2", },
2054 { }
2055 };
2056
2057 static const struct spmi_regulator_data pmi8994_regulators[] = {
2058 { "s1", 0x1400, "vdd_s1", },
2059 { "s2", 0x1700, "vdd_s2", },
2060 { "s3", 0x1a00, "vdd_s3", },
2061 { "l1", 0x4000, "vdd_l1", },
2062 { }
2063 };
2064
2065 static const struct spmi_regulator_data pm660_regulators[] = {
2066 { "s1", 0x1400, "vdd_s1", },
2067 { "s2", 0x1700, "vdd_s2", },
2068 { "s3", 0x1a00, "vdd_s3", },
2069 { "s4", 0x1d00, "vdd_s3", },
2070 { "s5", 0x2000, "vdd_s5", },
2071 { "s6", 0x2300, "vdd_s6", },
2072 { "l1", 0x4000, "vdd_l1_l6_l7", },
2073 { "l2", 0x4100, "vdd_l2_l3", },
2074 { "l3", 0x4200, "vdd_l2_l3", },
2075 /* l4 is unaccessible on PM660 */
2076 { "l5", 0x4400, "vdd_l5", },
2077 { "l6", 0x4500, "vdd_l1_l6_l7", },
2078 { "l7", 0x4600, "vdd_l1_l6_l7", },
2079 { "l8", 0x4700, "vdd_l8_l9_l10_l11_l12_l13_l14", },
2080 { "l9", 0x4800, "vdd_l8_l9_l10_l11_l12_l13_l14", },
2081 { "l10", 0x4900, "vdd_l8_l9_l10_l11_l12_l13_l14", },
2082 { "l11", 0x4a00, "vdd_l8_l9_l10_l11_l12_l13_l14", },
2083 { "l12", 0x4b00, "vdd_l8_l9_l10_l11_l12_l13_l14", },
2084 { "l13", 0x4c00, "vdd_l8_l9_l10_l11_l12_l13_l14", },
2085 { "l14", 0x4d00, "vdd_l8_l9_l10_l11_l12_l13_l14", },
2086 { "l15", 0x4e00, "vdd_l15_l16_l17_l18_l19", },
2087 { "l16", 0x4f00, "vdd_l15_l16_l17_l18_l19", },
2088 { "l17", 0x5000, "vdd_l15_l16_l17_l18_l19", },
2089 { "l18", 0x5100, "vdd_l15_l16_l17_l18_l19", },
2090 { "l19", 0x5200, "vdd_l15_l16_l17_l18_l19", },
2091 { }
2092 };
2093
2094 static const struct spmi_regulator_data pm660l_regulators[] = {
2095 { "s1", 0x1400, "vdd_s1", },
2096 { "s2", 0x1700, "vdd_s2", },
2097 { "s3", 0x1a00, "vdd_s3", },
2098 { "s4", 0x1d00, "vdd_s4", },
2099 { "s5", 0x2000, "vdd_s5", },
2100 { "l1", 0x4000, "vdd_l1_l9_l10", },
2101 { "l2", 0x4100, "vdd_l2", },
2102 { "l3", 0x4200, "vdd_l3_l5_l7_l8", },
2103 { "l4", 0x4300, "vdd_l4_l6", },
2104 { "l5", 0x4400, "vdd_l3_l5_l7_l8", },
2105 { "l6", 0x4500, "vdd_l4_l6", },
2106 { "l7", 0x4600, "vdd_l3_l5_l7_l8", },
2107 { "l8", 0x4700, "vdd_l3_l5_l7_l8", },
2108 { "l9", 0x4800, "vdd_l1_l9_l10", },
2109 { "l10", 0x4900, "vdd_l1_l9_l10", },
2110 { }
2111 };
2112
2113
2114 static const struct spmi_regulator_data pm8004_regulators[] = {
2115 { "s2", 0x1700, "vdd_s2", },
2116 { "s5", 0x2000, "vdd_s5", },
2117 { }
2118 };
2119
2120 static const struct spmi_regulator_data pm8005_regulators[] = {
2121 { "s1", 0x1400, "vdd_s1", },
2122 { "s2", 0x1700, "vdd_s2", },
2123 { "s3", 0x1a00, "vdd_s3", },
2124 { "s4", 0x1d00, "vdd_s4", },
2125 { }
2126 };
2127
2128 static const struct spmi_regulator_data pms405_regulators[] = {
2129 { "s3", 0x1a00, "vdd_s3"},
2130 { }
2131 };
2132
2133 static const struct of_device_id qcom_spmi_regulator_match[] = {
2134 { .compatible = "qcom,pm8004-regulators", .data = &pm8004_regulators },
2135 { .compatible = "qcom,pm8005-regulators", .data = &pm8005_regulators },
2136 { .compatible = "qcom,pm8226-regulators", .data = &pm8226_regulators },
2137 { .compatible = "qcom,pm8841-regulators", .data = &pm8841_regulators },
2138 { .compatible = "qcom,pm8916-regulators", .data = &pm8916_regulators },
2139 { .compatible = "qcom,pm8941-regulators", .data = &pm8941_regulators },
2140 { .compatible = "qcom,pm8950-regulators", .data = &pm8950_regulators },
2141 { .compatible = "qcom,pm8994-regulators", .data = &pm8994_regulators },
2142 { .compatible = "qcom,pmi8994-regulators", .data = &pmi8994_regulators },
2143 { .compatible = "qcom,pm660-regulators", .data = &pm660_regulators },
2144 { .compatible = "qcom,pm660l-regulators", .data = &pm660l_regulators },
2145 { .compatible = "qcom,pms405-regulators", .data = &pms405_regulators },
2146 { }
2147 };
2148 MODULE_DEVICE_TABLE(of, qcom_spmi_regulator_match);
2149
qcom_spmi_regulator_probe(struct platform_device * pdev)2150 static int qcom_spmi_regulator_probe(struct platform_device *pdev)
2151 {
2152 const struct spmi_regulator_data *reg;
2153 const struct spmi_voltage_range *range;
2154 const struct of_device_id *match;
2155 struct regulator_config config = { };
2156 struct regulator_dev *rdev;
2157 struct spmi_regulator *vreg;
2158 struct regmap *regmap;
2159 const char *name;
2160 struct device *dev = &pdev->dev;
2161 struct device_node *node = pdev->dev.of_node;
2162 struct device_node *syscon, *reg_node;
2163 struct property *reg_prop;
2164 int ret, lenp;
2165 struct list_head *vreg_list;
2166
2167 vreg_list = devm_kzalloc(dev, sizeof(*vreg_list), GFP_KERNEL);
2168 if (!vreg_list)
2169 return -ENOMEM;
2170 INIT_LIST_HEAD(vreg_list);
2171 platform_set_drvdata(pdev, vreg_list);
2172
2173 regmap = dev_get_regmap(dev->parent, NULL);
2174 if (!regmap)
2175 return -ENODEV;
2176
2177 match = of_match_device(qcom_spmi_regulator_match, &pdev->dev);
2178 if (!match)
2179 return -ENODEV;
2180
2181 if (of_find_property(node, "qcom,saw-reg", &lenp)) {
2182 syscon = of_parse_phandle(node, "qcom,saw-reg", 0);
2183 saw_regmap = syscon_node_to_regmap(syscon);
2184 of_node_put(syscon);
2185 if (IS_ERR(saw_regmap))
2186 dev_err(dev, "ERROR reading SAW regmap\n");
2187 }
2188
2189 for (reg = match->data; reg->name; reg++) {
2190
2191 if (saw_regmap) {
2192 reg_node = of_get_child_by_name(node, reg->name);
2193 reg_prop = of_find_property(reg_node, "qcom,saw-slave",
2194 &lenp);
2195 of_node_put(reg_node);
2196 if (reg_prop)
2197 continue;
2198 }
2199
2200 vreg = devm_kzalloc(dev, sizeof(*vreg), GFP_KERNEL);
2201 if (!vreg)
2202 return -ENOMEM;
2203
2204 vreg->dev = dev;
2205 vreg->base = reg->base;
2206 vreg->regmap = regmap;
2207 if (reg->ocp) {
2208 vreg->ocp_irq = platform_get_irq_byname(pdev, reg->ocp);
2209 if (vreg->ocp_irq < 0)
2210 return vreg->ocp_irq;
2211 }
2212 vreg->desc.id = -1;
2213 vreg->desc.owner = THIS_MODULE;
2214 vreg->desc.type = REGULATOR_VOLTAGE;
2215 vreg->desc.enable_reg = reg->base + SPMI_COMMON_REG_ENABLE;
2216 vreg->desc.enable_mask = SPMI_COMMON_ENABLE_MASK;
2217 vreg->desc.enable_val = SPMI_COMMON_ENABLE;
2218 vreg->desc.name = name = reg->name;
2219 vreg->desc.supply_name = reg->supply;
2220 vreg->desc.of_match = reg->name;
2221 vreg->desc.of_parse_cb = spmi_regulator_of_parse;
2222 vreg->desc.of_map_mode = spmi_regulator_of_map_mode;
2223
2224 ret = spmi_regulator_match(vreg, reg->force_type);
2225 if (ret)
2226 continue;
2227
2228 if (saw_regmap) {
2229 reg_node = of_get_child_by_name(node, reg->name);
2230 reg_prop = of_find_property(reg_node, "qcom,saw-leader",
2231 &lenp);
2232 of_node_put(reg_node);
2233 if (reg_prop) {
2234 spmi_saw_ops = *(vreg->desc.ops);
2235 spmi_saw_ops.set_voltage_sel =
2236 spmi_regulator_saw_set_voltage;
2237 vreg->desc.ops = &spmi_saw_ops;
2238 }
2239 }
2240
2241 if (vreg->set_points && vreg->set_points->count == 1) {
2242 /* since there is only one range */
2243 range = vreg->set_points->range;
2244 vreg->desc.uV_step = range->step_uV;
2245 }
2246
2247 config.dev = dev;
2248 config.driver_data = vreg;
2249 config.regmap = regmap;
2250 rdev = devm_regulator_register(dev, &vreg->desc, &config);
2251 if (IS_ERR(rdev)) {
2252 dev_err(dev, "failed to register %s\n", name);
2253 return PTR_ERR(rdev);
2254 }
2255
2256 INIT_LIST_HEAD(&vreg->node);
2257 list_add(&vreg->node, vreg_list);
2258 }
2259
2260 return 0;
2261 }
2262
2263 static struct platform_driver qcom_spmi_regulator_driver = {
2264 .driver = {
2265 .name = "qcom-spmi-regulator",
2266 .of_match_table = qcom_spmi_regulator_match,
2267 },
2268 .probe = qcom_spmi_regulator_probe,
2269 };
2270 module_platform_driver(qcom_spmi_regulator_driver);
2271
2272 MODULE_DESCRIPTION("Qualcomm SPMI PMIC regulator driver");
2273 MODULE_LICENSE("GPL v2");
2274 MODULE_ALIAS("platform:qcom-spmi-regulator");
2275