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 	SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS3,
103 	SPMI_REGULATOR_LOGICAL_TYPE_LDO_510,
104 	SPMI_REGULATOR_LOGICAL_TYPE_HFSMPS,
105 };
106 
107 enum spmi_regulator_type {
108 	SPMI_REGULATOR_TYPE_BUCK		= 0x03,
109 	SPMI_REGULATOR_TYPE_LDO			= 0x04,
110 	SPMI_REGULATOR_TYPE_VS			= 0x05,
111 	SPMI_REGULATOR_TYPE_BOOST		= 0x1b,
112 	SPMI_REGULATOR_TYPE_FTS			= 0x1c,
113 	SPMI_REGULATOR_TYPE_BOOST_BYP		= 0x1f,
114 	SPMI_REGULATOR_TYPE_ULT_LDO		= 0x21,
115 	SPMI_REGULATOR_TYPE_ULT_BUCK		= 0x22,
116 };
117 
118 enum spmi_regulator_subtype {
119 	SPMI_REGULATOR_SUBTYPE_GP_CTL		= 0x08,
120 	SPMI_REGULATOR_SUBTYPE_RF_CTL		= 0x09,
121 	SPMI_REGULATOR_SUBTYPE_N50		= 0x01,
122 	SPMI_REGULATOR_SUBTYPE_N150		= 0x02,
123 	SPMI_REGULATOR_SUBTYPE_N300		= 0x03,
124 	SPMI_REGULATOR_SUBTYPE_N600		= 0x04,
125 	SPMI_REGULATOR_SUBTYPE_N1200		= 0x05,
126 	SPMI_REGULATOR_SUBTYPE_N600_ST		= 0x06,
127 	SPMI_REGULATOR_SUBTYPE_N1200_ST		= 0x07,
128 	SPMI_REGULATOR_SUBTYPE_N900_ST		= 0x14,
129 	SPMI_REGULATOR_SUBTYPE_N300_ST		= 0x15,
130 	SPMI_REGULATOR_SUBTYPE_P50		= 0x08,
131 	SPMI_REGULATOR_SUBTYPE_P150		= 0x09,
132 	SPMI_REGULATOR_SUBTYPE_P300		= 0x0a,
133 	SPMI_REGULATOR_SUBTYPE_P600		= 0x0b,
134 	SPMI_REGULATOR_SUBTYPE_P1200		= 0x0c,
135 	SPMI_REGULATOR_SUBTYPE_LN		= 0x10,
136 	SPMI_REGULATOR_SUBTYPE_LV_P50		= 0x28,
137 	SPMI_REGULATOR_SUBTYPE_LV_P150		= 0x29,
138 	SPMI_REGULATOR_SUBTYPE_LV_P300		= 0x2a,
139 	SPMI_REGULATOR_SUBTYPE_LV_P600		= 0x2b,
140 	SPMI_REGULATOR_SUBTYPE_LV_P1200		= 0x2c,
141 	SPMI_REGULATOR_SUBTYPE_LV_P450		= 0x2d,
142 	SPMI_REGULATOR_SUBTYPE_HT_N300_ST	= 0x30,
143 	SPMI_REGULATOR_SUBTYPE_HT_N600_ST	= 0x31,
144 	SPMI_REGULATOR_SUBTYPE_HT_N1200_ST	= 0x32,
145 	SPMI_REGULATOR_SUBTYPE_HT_LVP150	= 0x3b,
146 	SPMI_REGULATOR_SUBTYPE_HT_LVP300	= 0x3c,
147 	SPMI_REGULATOR_SUBTYPE_L660_N300_ST	= 0x42,
148 	SPMI_REGULATOR_SUBTYPE_L660_N600_ST	= 0x43,
149 	SPMI_REGULATOR_SUBTYPE_L660_P50		= 0x46,
150 	SPMI_REGULATOR_SUBTYPE_L660_P150	= 0x47,
151 	SPMI_REGULATOR_SUBTYPE_L660_P600	= 0x49,
152 	SPMI_REGULATOR_SUBTYPE_L660_LVP150	= 0x4d,
153 	SPMI_REGULATOR_SUBTYPE_L660_LVP600	= 0x4f,
154 	SPMI_REGULATOR_SUBTYPE_LV100		= 0x01,
155 	SPMI_REGULATOR_SUBTYPE_LV300		= 0x02,
156 	SPMI_REGULATOR_SUBTYPE_MV300		= 0x08,
157 	SPMI_REGULATOR_SUBTYPE_MV500		= 0x09,
158 	SPMI_REGULATOR_SUBTYPE_HDMI		= 0x10,
159 	SPMI_REGULATOR_SUBTYPE_OTG		= 0x11,
160 	SPMI_REGULATOR_SUBTYPE_5V_BOOST		= 0x01,
161 	SPMI_REGULATOR_SUBTYPE_FTS_CTL		= 0x08,
162 	SPMI_REGULATOR_SUBTYPE_FTS2p5_CTL	= 0x09,
163 	SPMI_REGULATOR_SUBTYPE_FTS426_CTL	= 0x0a,
164 	SPMI_REGULATOR_SUBTYPE_BB_2A		= 0x01,
165 	SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL1	= 0x0d,
166 	SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL2	= 0x0e,
167 	SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL3	= 0x0f,
168 	SPMI_REGULATOR_SUBTYPE_ULT_HF_CTL4	= 0x10,
169 	SPMI_REGULATOR_SUBTYPE_HFS430		= 0x0a,
170 	SPMI_REGULATOR_SUBTYPE_HT_P150		= 0x35,
171 	SPMI_REGULATOR_SUBTYPE_HT_P600		= 0x3d,
172 	SPMI_REGULATOR_SUBTYPE_HFSMPS_510	= 0x0a,
173 	SPMI_REGULATOR_SUBTYPE_FTSMPS_510	= 0x0b,
174 	SPMI_REGULATOR_SUBTYPE_LV_P150_510	= 0x71,
175 	SPMI_REGULATOR_SUBTYPE_LV_P300_510	= 0x72,
176 	SPMI_REGULATOR_SUBTYPE_LV_P600_510	= 0x73,
177 	SPMI_REGULATOR_SUBTYPE_N300_510		= 0x6a,
178 	SPMI_REGULATOR_SUBTYPE_N600_510		= 0x6b,
179 	SPMI_REGULATOR_SUBTYPE_N1200_510	= 0x6c,
180 	SPMI_REGULATOR_SUBTYPE_MV_P50_510	= 0x7a,
181 	SPMI_REGULATOR_SUBTYPE_MV_P150_510	= 0x7b,
182 	SPMI_REGULATOR_SUBTYPE_MV_P600_510	= 0x7d,
183 };
184 
185 enum spmi_common_regulator_registers {
186 	SPMI_COMMON_REG_DIG_MAJOR_REV		= 0x01,
187 	SPMI_COMMON_REG_TYPE			= 0x04,
188 	SPMI_COMMON_REG_SUBTYPE			= 0x05,
189 	SPMI_COMMON_REG_VOLTAGE_RANGE		= 0x40,
190 	SPMI_COMMON_REG_VOLTAGE_SET		= 0x41,
191 	SPMI_COMMON_REG_MODE			= 0x45,
192 	SPMI_COMMON_REG_ENABLE			= 0x46,
193 	SPMI_COMMON_REG_PULL_DOWN		= 0x48,
194 	SPMI_COMMON_REG_SOFT_START		= 0x4c,
195 	SPMI_COMMON_REG_STEP_CTRL		= 0x61,
196 };
197 
198 /*
199  * Second common register layout used by newer devices starting with ftsmps426
200  * Note that some of the registers from the first common layout remain
201  * unchanged and their definition is not duplicated.
202  */
203 enum spmi_ftsmps426_regulator_registers {
204 	SPMI_FTSMPS426_REG_VOLTAGE_LSB		= 0x40,
205 	SPMI_FTSMPS426_REG_VOLTAGE_MSB		= 0x41,
206 	SPMI_FTSMPS426_REG_VOLTAGE_ULS_LSB	= 0x68,
207 	SPMI_FTSMPS426_REG_VOLTAGE_ULS_MSB	= 0x69,
208 };
209 
210 /*
211  * Third common register layout
212  */
213 enum spmi_hfsmps_regulator_registers {
214 	SPMI_HFSMPS_REG_STEP_CTRL		= 0x3c,
215 	SPMI_HFSMPS_REG_PULL_DOWN		= 0xa0,
216 };
217 
218 enum spmi_vs_registers {
219 	SPMI_VS_REG_OCP				= 0x4a,
220 	SPMI_VS_REG_SOFT_START			= 0x4c,
221 };
222 
223 enum spmi_boost_registers {
224 	SPMI_BOOST_REG_CURRENT_LIMIT		= 0x4a,
225 };
226 
227 enum spmi_boost_byp_registers {
228 	SPMI_BOOST_BYP_REG_CURRENT_LIMIT	= 0x4b,
229 };
230 
231 enum spmi_saw3_registers {
232 	SAW3_SECURE				= 0x00,
233 	SAW3_ID					= 0x04,
234 	SAW3_SPM_STS				= 0x0C,
235 	SAW3_AVS_STS				= 0x10,
236 	SAW3_PMIC_STS				= 0x14,
237 	SAW3_RST				= 0x18,
238 	SAW3_VCTL				= 0x1C,
239 	SAW3_AVS_CTL				= 0x20,
240 	SAW3_AVS_LIMIT				= 0x24,
241 	SAW3_AVS_DLY				= 0x28,
242 	SAW3_AVS_HYSTERESIS			= 0x2C,
243 	SAW3_SPM_STS2				= 0x38,
244 	SAW3_SPM_PMIC_DATA_3			= 0x4C,
245 	SAW3_VERSION				= 0xFD0,
246 };
247 
248 /* Used for indexing into ctrl_reg.  These are offets from 0x40 */
249 enum spmi_common_control_register_index {
250 	SPMI_COMMON_IDX_VOLTAGE_RANGE		= 0,
251 	SPMI_COMMON_IDX_VOLTAGE_SET		= 1,
252 	SPMI_COMMON_IDX_MODE			= 5,
253 	SPMI_COMMON_IDX_ENABLE			= 6,
254 };
255 
256 /* Common regulator control register layout */
257 #define SPMI_COMMON_ENABLE_MASK			0x80
258 #define SPMI_COMMON_ENABLE			0x80
259 #define SPMI_COMMON_DISABLE			0x00
260 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN3_MASK	0x08
261 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN2_MASK	0x04
262 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN1_MASK	0x02
263 #define SPMI_COMMON_ENABLE_FOLLOW_HW_EN0_MASK	0x01
264 #define SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK	0x0f
265 
266 /* Common regulator mode register layout */
267 #define SPMI_COMMON_MODE_HPM_MASK		0x80
268 #define SPMI_COMMON_MODE_AUTO_MASK		0x40
269 #define SPMI_COMMON_MODE_BYPASS_MASK		0x20
270 #define SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK	0x10
271 #define SPMI_COMMON_MODE_FOLLOW_HW_EN3_MASK	0x08
272 #define SPMI_COMMON_MODE_FOLLOW_HW_EN2_MASK	0x04
273 #define SPMI_COMMON_MODE_FOLLOW_HW_EN1_MASK	0x02
274 #define SPMI_COMMON_MODE_FOLLOW_HW_EN0_MASK	0x01
275 #define SPMI_COMMON_MODE_FOLLOW_ALL_MASK	0x1f
276 
277 #define SPMI_FTSMPS426_MODE_BYPASS_MASK		3
278 #define SPMI_FTSMPS426_MODE_RETENTION_MASK	4
279 #define SPMI_FTSMPS426_MODE_LPM_MASK		5
280 #define SPMI_FTSMPS426_MODE_AUTO_MASK		6
281 #define SPMI_FTSMPS426_MODE_HPM_MASK		7
282 
283 #define SPMI_FTSMPS426_MODE_MASK		0x07
284 
285 /* Third common regulator mode register values */
286 #define SPMI_HFSMPS_MODE_BYPASS_MASK		2
287 #define SPMI_HFSMPS_MODE_RETENTION_MASK		3
288 #define SPMI_HFSMPS_MODE_LPM_MASK		4
289 #define SPMI_HFSMPS_MODE_AUTO_MASK		6
290 #define SPMI_HFSMPS_MODE_HPM_MASK		7
291 
292 #define SPMI_HFSMPS_MODE_MASK			0x07
293 
294 /* Common regulator pull down control register layout */
295 #define SPMI_COMMON_PULL_DOWN_ENABLE_MASK	0x80
296 
297 /* LDO regulator current limit control register layout */
298 #define SPMI_LDO_CURRENT_LIMIT_ENABLE_MASK	0x80
299 
300 /* LDO regulator soft start control register layout */
301 #define SPMI_LDO_SOFT_START_ENABLE_MASK		0x80
302 
303 /* VS regulator over current protection control register layout */
304 #define SPMI_VS_OCP_OVERRIDE			0x01
305 #define SPMI_VS_OCP_NO_OVERRIDE			0x00
306 
307 /* VS regulator soft start control register layout */
308 #define SPMI_VS_SOFT_START_ENABLE_MASK		0x80
309 #define SPMI_VS_SOFT_START_SEL_MASK		0x03
310 
311 /* Boost regulator current limit control register layout */
312 #define SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK	0x80
313 #define SPMI_BOOST_CURRENT_LIMIT_MASK		0x07
314 
315 #define SPMI_VS_OCP_DEFAULT_MAX_RETRIES		10
316 #define SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS	30
317 #define SPMI_VS_OCP_FALL_DELAY_US		90
318 #define SPMI_VS_OCP_FAULT_DELAY_US		20000
319 
320 #define SPMI_FTSMPS_STEP_CTRL_STEP_MASK		0x18
321 #define SPMI_FTSMPS_STEP_CTRL_STEP_SHIFT	3
322 #define SPMI_FTSMPS_STEP_CTRL_DELAY_MASK	0x07
323 #define SPMI_FTSMPS_STEP_CTRL_DELAY_SHIFT	0
324 
325 /* Clock rate in kHz of the FTSMPS regulator reference clock. */
326 #define SPMI_FTSMPS_CLOCK_RATE		19200
327 
328 /* Minimum voltage stepper delay for each step. */
329 #define SPMI_FTSMPS_STEP_DELAY		8
330 #define SPMI_DEFAULT_STEP_DELAY		20
331 
332 /*
333  * The ratio SPMI_FTSMPS_STEP_MARGIN_NUM/SPMI_FTSMPS_STEP_MARGIN_DEN is used to
334  * adjust the step rate in order to account for oscillator variance.
335  */
336 #define SPMI_FTSMPS_STEP_MARGIN_NUM	4
337 #define SPMI_FTSMPS_STEP_MARGIN_DEN	5
338 
339 /* slew_rate has units of uV/us. */
340 #define SPMI_HFSMPS_SLEW_RATE_38p4 38400
341 
342 #define SPMI_FTSMPS426_STEP_CTRL_DELAY_MASK	0x03
343 #define SPMI_FTSMPS426_STEP_CTRL_DELAY_SHIFT	0
344 
345 /* Clock rate in kHz of the FTSMPS426 regulator reference clock. */
346 #define SPMI_FTSMPS426_CLOCK_RATE		4800
347 
348 #define SPMI_HFS430_CLOCK_RATE			1600
349 
350 /* Minimum voltage stepper delay for each step. */
351 #define SPMI_FTSMPS426_STEP_DELAY		2
352 
353 /*
354  * The ratio SPMI_FTSMPS426_STEP_MARGIN_NUM/SPMI_FTSMPS426_STEP_MARGIN_DEN is
355  * used to adjust the step rate in order to account for oscillator variance.
356  */
357 #define SPMI_FTSMPS426_STEP_MARGIN_NUM	10
358 #define SPMI_FTSMPS426_STEP_MARGIN_DEN	11
359 
360 
361 /* VSET value to decide the range of ULT SMPS */
362 #define ULT_SMPS_RANGE_SPLIT 0x60
363 
364 /**
365  * struct spmi_voltage_range - regulator set point voltage mapping description
366  * @min_uV:		Minimum programmable output voltage resulting from
367  *			set point register value 0x00
368  * @max_uV:		Maximum programmable output voltage
369  * @step_uV:		Output voltage increase resulting from the set point
370  *			register value increasing by 1
371  * @set_point_min_uV:	Minimum allowed voltage
372  * @set_point_max_uV:	Maximum allowed voltage.  This may be tweaked in order
373  *			to pick which range should be used in the case of
374  *			overlapping set points.
375  * @n_voltages:		Number of preferred voltage set points present in this
376  *			range
377  * @range_sel:		Voltage range register value corresponding to this range
378  *
379  * The following relationships must be true for the values used in this struct:
380  * (max_uV - min_uV) % step_uV == 0
381  * (set_point_min_uV - min_uV) % step_uV == 0*
382  * (set_point_max_uV - min_uV) % step_uV == 0*
383  * n_voltages = (set_point_max_uV - set_point_min_uV) / step_uV + 1
384  *
385  * *Note, set_point_min_uV == set_point_max_uV == 0 is allowed in order to
386  * specify that the voltage range has meaning, but is not preferred.
387  */
388 struct spmi_voltage_range {
389 	int					min_uV;
390 	int					max_uV;
391 	int					step_uV;
392 	int					set_point_min_uV;
393 	int					set_point_max_uV;
394 	unsigned				n_voltages;
395 	u8					range_sel;
396 };
397 
398 /*
399  * The ranges specified in the spmi_voltage_set_points struct must be listed
400  * so that range[i].set_point_max_uV < range[i+1].set_point_min_uV.
401  */
402 struct spmi_voltage_set_points {
403 	struct spmi_voltage_range		*range;
404 	int					count;
405 	unsigned				n_voltages;
406 };
407 
408 struct spmi_regulator {
409 	struct regulator_desc			desc;
410 	struct device				*dev;
411 	struct delayed_work			ocp_work;
412 	struct regmap				*regmap;
413 	struct spmi_voltage_set_points		*set_points;
414 	enum spmi_regulator_logical_type	logical_type;
415 	int					ocp_irq;
416 	int					ocp_count;
417 	int					ocp_max_retries;
418 	int					ocp_retry_delay_ms;
419 	int					hpm_min_load;
420 	int					slew_rate;
421 	ktime_t					vs_enable_time;
422 	u16					base;
423 	struct list_head			node;
424 };
425 
426 struct spmi_regulator_mapping {
427 	enum spmi_regulator_type		type;
428 	enum spmi_regulator_subtype		subtype;
429 	enum spmi_regulator_logical_type	logical_type;
430 	u32					revision_min;
431 	u32					revision_max;
432 	const struct regulator_ops		*ops;
433 	struct spmi_voltage_set_points		*set_points;
434 	int					hpm_min_load;
435 };
436 
437 struct spmi_regulator_data {
438 	const char			*name;
439 	u16				base;
440 	const char			*supply;
441 	const char			*ocp;
442 	u16				force_type;
443 };
444 
445 #define SPMI_VREG(_type, _subtype, _dig_major_min, _dig_major_max, \
446 		      _logical_type, _ops_val, _set_points_val, _hpm_min_load) \
447 	{ \
448 		.type		= SPMI_REGULATOR_TYPE_##_type, \
449 		.subtype	= SPMI_REGULATOR_SUBTYPE_##_subtype, \
450 		.revision_min	= _dig_major_min, \
451 		.revision_max	= _dig_major_max, \
452 		.logical_type	= SPMI_REGULATOR_LOGICAL_TYPE_##_logical_type, \
453 		.ops		= &spmi_##_ops_val##_ops, \
454 		.set_points	= &_set_points_val##_set_points, \
455 		.hpm_min_load	= _hpm_min_load, \
456 	}
457 
458 #define SPMI_VREG_VS(_subtype, _dig_major_min, _dig_major_max) \
459 	{ \
460 		.type		= SPMI_REGULATOR_TYPE_VS, \
461 		.subtype	= SPMI_REGULATOR_SUBTYPE_##_subtype, \
462 		.revision_min	= _dig_major_min, \
463 		.revision_max	= _dig_major_max, \
464 		.logical_type	= SPMI_REGULATOR_LOGICAL_TYPE_VS, \
465 		.ops		= &spmi_vs_ops, \
466 	}
467 
468 #define SPMI_VOLTAGE_RANGE(_range_sel, _min_uV, _set_point_min_uV, \
469 			_set_point_max_uV, _max_uV, _step_uV) \
470 	{ \
471 		.min_uV			= _min_uV, \
472 		.max_uV			= _max_uV, \
473 		.set_point_min_uV	= _set_point_min_uV, \
474 		.set_point_max_uV	= _set_point_max_uV, \
475 		.step_uV		= _step_uV, \
476 		.range_sel		= _range_sel, \
477 	}
478 
479 #define DEFINE_SPMI_SET_POINTS(name) \
480 struct spmi_voltage_set_points name##_set_points = { \
481 	.range	= name##_ranges, \
482 	.count	= ARRAY_SIZE(name##_ranges), \
483 }
484 
485 /*
486  * These tables contain the physically available PMIC regulator voltage setpoint
487  * ranges.  Where two ranges overlap in hardware, one of the ranges is trimmed
488  * to ensure that the setpoints available to software are monotonically
489  * increasing and unique.  The set_voltage callback functions expect these
490  * properties to hold.
491  */
492 static struct spmi_voltage_range pldo_ranges[] = {
493 	SPMI_VOLTAGE_RANGE(2,  750000,  750000, 1537500, 1537500, 12500),
494 	SPMI_VOLTAGE_RANGE(3, 1500000, 1550000, 3075000, 3075000, 25000),
495 	SPMI_VOLTAGE_RANGE(4, 1750000, 3100000, 4900000, 4900000, 50000),
496 };
497 
498 static struct spmi_voltage_range nldo1_ranges[] = {
499 	SPMI_VOLTAGE_RANGE(2,  750000,  750000, 1537500, 1537500, 12500),
500 };
501 
502 static struct spmi_voltage_range nldo2_ranges[] = {
503 	SPMI_VOLTAGE_RANGE(0,  375000,       0,       0, 1537500, 12500),
504 	SPMI_VOLTAGE_RANGE(1,  375000,  375000,  768750,  768750,  6250),
505 	SPMI_VOLTAGE_RANGE(2,  750000,  775000, 1537500, 1537500, 12500),
506 };
507 
508 static struct spmi_voltage_range nldo3_ranges[] = {
509 	SPMI_VOLTAGE_RANGE(0,  375000,  375000, 1537500, 1537500, 12500),
510 	SPMI_VOLTAGE_RANGE(1,  375000,       0,       0, 1537500, 12500),
511 	SPMI_VOLTAGE_RANGE(2,  750000,       0,       0, 1537500, 12500),
512 };
513 
514 static struct spmi_voltage_range ln_ldo_ranges[] = {
515 	SPMI_VOLTAGE_RANGE(1,  690000,  690000, 1110000, 1110000, 60000),
516 	SPMI_VOLTAGE_RANGE(0, 1380000, 1380000, 2220000, 2220000, 120000),
517 };
518 
519 static struct spmi_voltage_range smps_ranges[] = {
520 	SPMI_VOLTAGE_RANGE(0,  375000,  375000, 1562500, 1562500, 12500),
521 	SPMI_VOLTAGE_RANGE(1, 1550000, 1575000, 3125000, 3125000, 25000),
522 };
523 
524 static struct spmi_voltage_range ftsmps_ranges[] = {
525 	SPMI_VOLTAGE_RANGE(0,       0,  350000, 1275000, 1275000,  5000),
526 	SPMI_VOLTAGE_RANGE(1,       0, 1280000, 2040000, 2040000, 10000),
527 };
528 
529 static struct spmi_voltage_range ftsmps2p5_ranges[] = {
530 	SPMI_VOLTAGE_RANGE(0,   80000,  350000, 1355000, 1355000,  5000),
531 	SPMI_VOLTAGE_RANGE(1,  160000, 1360000, 2200000, 2200000, 10000),
532 };
533 
534 static struct spmi_voltage_range ftsmps426_ranges[] = {
535 	SPMI_VOLTAGE_RANGE(0,       0,  320000, 1352000, 1352000,  4000),
536 };
537 
538 static struct spmi_voltage_range boost_ranges[] = {
539 	SPMI_VOLTAGE_RANGE(0, 4000000, 4000000, 5550000, 5550000, 50000),
540 };
541 
542 static struct spmi_voltage_range boost_byp_ranges[] = {
543 	SPMI_VOLTAGE_RANGE(0, 2500000, 2500000, 5200000, 5650000, 50000),
544 };
545 
546 static struct spmi_voltage_range ult_lo_smps_ranges[] = {
547 	SPMI_VOLTAGE_RANGE(0,  375000,  375000, 1562500, 1562500, 12500),
548 	SPMI_VOLTAGE_RANGE(1,  750000,       0,       0, 1525000, 25000),
549 };
550 
551 static struct spmi_voltage_range ult_ho_smps_ranges[] = {
552 	SPMI_VOLTAGE_RANGE(0, 1550000, 1550000, 2325000, 2325000, 25000),
553 };
554 
555 static struct spmi_voltage_range ult_nldo_ranges[] = {
556 	SPMI_VOLTAGE_RANGE(0,  375000,  375000, 1537500, 1537500, 12500),
557 };
558 
559 static struct spmi_voltage_range ult_pldo_ranges[] = {
560 	SPMI_VOLTAGE_RANGE(0, 1750000, 1750000, 3337500, 3337500, 12500),
561 };
562 
563 static struct spmi_voltage_range pldo660_ranges[] = {
564 	SPMI_VOLTAGE_RANGE(0, 1504000, 1504000, 3544000, 3544000, 8000),
565 };
566 
567 static struct spmi_voltage_range nldo660_ranges[] = {
568 	SPMI_VOLTAGE_RANGE(0,  320000,  320000, 1304000, 1304000, 8000),
569 };
570 
571 static struct spmi_voltage_range ht_lvpldo_ranges[] = {
572 	SPMI_VOLTAGE_RANGE(0, 1504000, 1504000, 2000000, 2000000, 8000),
573 };
574 
575 static struct spmi_voltage_range ht_nldo_ranges[] = {
576 	SPMI_VOLTAGE_RANGE(0,  312000,  312000, 1304000, 1304000, 8000),
577 };
578 
579 static struct spmi_voltage_range hfs430_ranges[] = {
580 	SPMI_VOLTAGE_RANGE(0, 320000, 320000, 2040000, 2040000, 8000),
581 };
582 
583 static struct spmi_voltage_range ht_p150_ranges[] = {
584 	SPMI_VOLTAGE_RANGE(0, 1616000, 1616000, 3304000, 3304000, 8000),
585 };
586 
587 static struct spmi_voltage_range ht_p600_ranges[] = {
588 	SPMI_VOLTAGE_RANGE(0, 1704000, 1704000, 1896000, 1896000, 8000),
589 };
590 
591 static struct spmi_voltage_range nldo_510_ranges[] = {
592 	SPMI_VOLTAGE_RANGE(0, 320000, 320000, 1304000, 1304000, 8000),
593 };
594 
595 static struct spmi_voltage_range ftsmps510_ranges[] = {
596 	SPMI_VOLTAGE_RANGE(0, 300000, 300000, 1372000, 1372000, 4000),
597 };
598 
599 static DEFINE_SPMI_SET_POINTS(pldo);
600 static DEFINE_SPMI_SET_POINTS(nldo1);
601 static DEFINE_SPMI_SET_POINTS(nldo2);
602 static DEFINE_SPMI_SET_POINTS(nldo3);
603 static DEFINE_SPMI_SET_POINTS(ln_ldo);
604 static DEFINE_SPMI_SET_POINTS(smps);
605 static DEFINE_SPMI_SET_POINTS(ftsmps);
606 static DEFINE_SPMI_SET_POINTS(ftsmps2p5);
607 static DEFINE_SPMI_SET_POINTS(ftsmps426);
608 static DEFINE_SPMI_SET_POINTS(boost);
609 static DEFINE_SPMI_SET_POINTS(boost_byp);
610 static DEFINE_SPMI_SET_POINTS(ult_lo_smps);
611 static DEFINE_SPMI_SET_POINTS(ult_ho_smps);
612 static DEFINE_SPMI_SET_POINTS(ult_nldo);
613 static DEFINE_SPMI_SET_POINTS(ult_pldo);
614 static DEFINE_SPMI_SET_POINTS(pldo660);
615 static DEFINE_SPMI_SET_POINTS(nldo660);
616 static DEFINE_SPMI_SET_POINTS(ht_lvpldo);
617 static DEFINE_SPMI_SET_POINTS(ht_nldo);
618 static DEFINE_SPMI_SET_POINTS(hfs430);
619 static DEFINE_SPMI_SET_POINTS(ht_p150);
620 static DEFINE_SPMI_SET_POINTS(ht_p600);
621 static DEFINE_SPMI_SET_POINTS(nldo_510);
622 static DEFINE_SPMI_SET_POINTS(ftsmps510);
623 
spmi_vreg_read(struct spmi_regulator * vreg,u16 addr,u8 * buf,int len)624 static inline int spmi_vreg_read(struct spmi_regulator *vreg, u16 addr, u8 *buf,
625 				 int len)
626 {
627 	return regmap_bulk_read(vreg->regmap, vreg->base + addr, buf, len);
628 }
629 
spmi_vreg_write(struct spmi_regulator * vreg,u16 addr,u8 * buf,int len)630 static inline int spmi_vreg_write(struct spmi_regulator *vreg, u16 addr,
631 				u8 *buf, int len)
632 {
633 	return regmap_bulk_write(vreg->regmap, vreg->base + addr, buf, len);
634 }
635 
spmi_vreg_update_bits(struct spmi_regulator * vreg,u16 addr,u8 val,u8 mask)636 static int spmi_vreg_update_bits(struct spmi_regulator *vreg, u16 addr, u8 val,
637 		u8 mask)
638 {
639 	return regmap_update_bits(vreg->regmap, vreg->base + addr, mask, val);
640 }
641 
spmi_regulator_vs_enable(struct regulator_dev * rdev)642 static int spmi_regulator_vs_enable(struct regulator_dev *rdev)
643 {
644 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
645 
646 	if (vreg->ocp_irq) {
647 		vreg->ocp_count = 0;
648 		vreg->vs_enable_time = ktime_get();
649 	}
650 
651 	return regulator_enable_regmap(rdev);
652 }
653 
spmi_regulator_vs_ocp(struct regulator_dev * rdev,int lim_uA,int severity,bool enable)654 static int spmi_regulator_vs_ocp(struct regulator_dev *rdev, int lim_uA,
655 				 int severity, bool enable)
656 {
657 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
658 	u8 reg = SPMI_VS_OCP_OVERRIDE;
659 
660 	if (lim_uA || !enable || severity != REGULATOR_SEVERITY_PROT)
661 		return -EINVAL;
662 
663 	return spmi_vreg_write(vreg, SPMI_VS_REG_OCP, &reg, 1);
664 }
665 
spmi_regulator_select_voltage(struct spmi_regulator * vreg,int min_uV,int max_uV)666 static int spmi_regulator_select_voltage(struct spmi_regulator *vreg,
667 					 int min_uV, int max_uV)
668 {
669 	const struct spmi_voltage_range *range;
670 	int uV = min_uV;
671 	int lim_min_uV, lim_max_uV, i, range_id, range_max_uV;
672 	int selector, voltage_sel;
673 
674 	/* Check if request voltage is outside of physically settable range. */
675 	lim_min_uV = vreg->set_points->range[0].set_point_min_uV;
676 	lim_max_uV =
677 	  vreg->set_points->range[vreg->set_points->count - 1].set_point_max_uV;
678 
679 	if (uV < lim_min_uV && max_uV >= lim_min_uV)
680 		uV = lim_min_uV;
681 
682 	if (uV < lim_min_uV || uV > lim_max_uV) {
683 		dev_err(vreg->dev,
684 			"request v=[%d, %d] is outside possible v=[%d, %d]\n",
685 			 min_uV, max_uV, lim_min_uV, lim_max_uV);
686 		return -EINVAL;
687 	}
688 
689 	/* Find the range which uV is inside of. */
690 	for (i = vreg->set_points->count - 1; i > 0; i--) {
691 		range_max_uV = vreg->set_points->range[i - 1].set_point_max_uV;
692 		if (uV > range_max_uV && range_max_uV > 0)
693 			break;
694 	}
695 
696 	range_id = i;
697 	range = &vreg->set_points->range[range_id];
698 
699 	/*
700 	 * Force uV to be an allowed set point by applying a ceiling function to
701 	 * the uV value.
702 	 */
703 	voltage_sel = DIV_ROUND_UP(uV - range->min_uV, range->step_uV);
704 	uV = voltage_sel * range->step_uV + range->min_uV;
705 
706 	if (uV > max_uV) {
707 		dev_err(vreg->dev,
708 			"request v=[%d, %d] cannot be met by any set point; "
709 			"next set point: %d\n",
710 			min_uV, max_uV, uV);
711 		return -EINVAL;
712 	}
713 
714 	selector = 0;
715 	for (i = 0; i < range_id; i++)
716 		selector += vreg->set_points->range[i].n_voltages;
717 	selector += (uV - range->set_point_min_uV) / range->step_uV;
718 
719 	return selector;
720 }
721 
spmi_sw_selector_to_hw(struct spmi_regulator * vreg,unsigned selector,u8 * range_sel,u8 * voltage_sel)722 static int spmi_sw_selector_to_hw(struct spmi_regulator *vreg,
723 				  unsigned selector, u8 *range_sel,
724 				  u8 *voltage_sel)
725 {
726 	const struct spmi_voltage_range *range, *end;
727 	unsigned offset;
728 
729 	range = vreg->set_points->range;
730 	end = range + vreg->set_points->count;
731 
732 	for (; range < end; range++) {
733 		if (selector < range->n_voltages) {
734 			/*
735 			 * hardware selectors between set point min and real
736 			 * min are invalid so we ignore them
737 			 */
738 			offset = range->set_point_min_uV - range->min_uV;
739 			offset /= range->step_uV;
740 			*voltage_sel = selector + offset;
741 			*range_sel = range->range_sel;
742 			return 0;
743 		}
744 
745 		selector -= range->n_voltages;
746 	}
747 
748 	return -EINVAL;
749 }
750 
spmi_hw_selector_to_sw(struct spmi_regulator * vreg,u8 hw_sel,const struct spmi_voltage_range * range)751 static int spmi_hw_selector_to_sw(struct spmi_regulator *vreg, u8 hw_sel,
752 				  const struct spmi_voltage_range *range)
753 {
754 	unsigned sw_sel = 0;
755 	unsigned offset, max_hw_sel;
756 	const struct spmi_voltage_range *r = vreg->set_points->range;
757 	const struct spmi_voltage_range *end = r + vreg->set_points->count;
758 
759 	for (; r < end; r++) {
760 		if (r == range && range->n_voltages) {
761 			/*
762 			 * hardware selectors between set point min and real
763 			 * min and between set point max and real max are
764 			 * invalid so we return an error if they're
765 			 * programmed into the hardware
766 			 */
767 			offset = range->set_point_min_uV - range->min_uV;
768 			offset /= range->step_uV;
769 			if (hw_sel < offset)
770 				return -EINVAL;
771 
772 			max_hw_sel = range->set_point_max_uV - range->min_uV;
773 			max_hw_sel /= range->step_uV;
774 			if (hw_sel > max_hw_sel)
775 				return -EINVAL;
776 
777 			return sw_sel + hw_sel - offset;
778 		}
779 		sw_sel += r->n_voltages;
780 	}
781 
782 	return -EINVAL;
783 }
784 
785 static const struct spmi_voltage_range *
spmi_regulator_find_range(struct spmi_regulator * vreg)786 spmi_regulator_find_range(struct spmi_regulator *vreg)
787 {
788 	u8 range_sel;
789 	const struct spmi_voltage_range *range, *end;
790 
791 	range = vreg->set_points->range;
792 	end = range + vreg->set_points->count;
793 
794 	spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, &range_sel, 1);
795 
796 	for (; range < end; range++)
797 		if (range->range_sel == range_sel)
798 			return range;
799 
800 	return NULL;
801 }
802 
spmi_regulator_select_voltage_same_range(struct spmi_regulator * vreg,int min_uV,int max_uV)803 static int spmi_regulator_select_voltage_same_range(struct spmi_regulator *vreg,
804 		int min_uV, int max_uV)
805 {
806 	const struct spmi_voltage_range *range;
807 	int uV = min_uV;
808 	int i, selector;
809 
810 	range = spmi_regulator_find_range(vreg);
811 	if (!range)
812 		goto different_range;
813 
814 	if (uV < range->min_uV && max_uV >= range->min_uV)
815 		uV = range->min_uV;
816 
817 	if (uV < range->min_uV || uV > range->max_uV) {
818 		/* Current range doesn't support the requested voltage. */
819 		goto different_range;
820 	}
821 
822 	/*
823 	 * Force uV to be an allowed set point by applying a ceiling function to
824 	 * the uV value.
825 	 */
826 	uV = DIV_ROUND_UP(uV - range->min_uV, range->step_uV);
827 	uV = uV * range->step_uV + range->min_uV;
828 
829 	if (uV > max_uV) {
830 		/*
831 		 * No set point in the current voltage range is within the
832 		 * requested min_uV to max_uV range.
833 		 */
834 		goto different_range;
835 	}
836 
837 	selector = 0;
838 	for (i = 0; i < vreg->set_points->count; i++) {
839 		if (uV >= vreg->set_points->range[i].set_point_min_uV
840 		    && uV <= vreg->set_points->range[i].set_point_max_uV) {
841 			selector +=
842 			    (uV - vreg->set_points->range[i].set_point_min_uV)
843 				/ vreg->set_points->range[i].step_uV;
844 			break;
845 		}
846 
847 		selector += vreg->set_points->range[i].n_voltages;
848 	}
849 
850 	if (selector >= vreg->set_points->n_voltages)
851 		goto different_range;
852 
853 	return selector;
854 
855 different_range:
856 	return spmi_regulator_select_voltage(vreg, min_uV, max_uV);
857 }
858 
spmi_regulator_common_map_voltage(struct regulator_dev * rdev,int min_uV,int max_uV)859 static int spmi_regulator_common_map_voltage(struct regulator_dev *rdev,
860 					     int min_uV, int max_uV)
861 {
862 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
863 
864 	/*
865 	 * Favor staying in the current voltage range if possible.  This avoids
866 	 * voltage spikes that occur when changing the voltage range.
867 	 */
868 	return spmi_regulator_select_voltage_same_range(vreg, min_uV, max_uV);
869 }
870 
871 static int
spmi_regulator_common_set_voltage(struct regulator_dev * rdev,unsigned selector)872 spmi_regulator_common_set_voltage(struct regulator_dev *rdev, unsigned selector)
873 {
874 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
875 	int ret;
876 	u8 buf[2];
877 	u8 range_sel, voltage_sel;
878 
879 	ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel);
880 	if (ret)
881 		return ret;
882 
883 	buf[0] = range_sel;
884 	buf[1] = voltage_sel;
885 	return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, buf, 2);
886 }
887 
888 static int spmi_regulator_common_list_voltage(struct regulator_dev *rdev,
889 					      unsigned selector);
890 
spmi_regulator_ftsmps426_set_voltage(struct regulator_dev * rdev,unsigned selector)891 static int spmi_regulator_ftsmps426_set_voltage(struct regulator_dev *rdev,
892 					      unsigned selector)
893 {
894 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
895 	u8 buf[2];
896 	int mV;
897 
898 	mV = spmi_regulator_common_list_voltage(rdev, selector) / 1000;
899 
900 	buf[0] = mV & 0xff;
901 	buf[1] = mV >> 8;
902 	return spmi_vreg_write(vreg, SPMI_FTSMPS426_REG_VOLTAGE_LSB, buf, 2);
903 }
904 
spmi_regulator_set_voltage_time_sel(struct regulator_dev * rdev,unsigned int old_selector,unsigned int new_selector)905 static int spmi_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
906 		unsigned int old_selector, unsigned int new_selector)
907 {
908 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
909 	int diff_uV;
910 
911 	diff_uV = abs(spmi_regulator_common_list_voltage(rdev, new_selector) -
912 		      spmi_regulator_common_list_voltage(rdev, old_selector));
913 
914 	return DIV_ROUND_UP(diff_uV, vreg->slew_rate);
915 }
916 
spmi_regulator_common_get_voltage(struct regulator_dev * rdev)917 static int spmi_regulator_common_get_voltage(struct regulator_dev *rdev)
918 {
919 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
920 	const struct spmi_voltage_range *range;
921 	u8 voltage_sel;
922 
923 	spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1);
924 
925 	range = spmi_regulator_find_range(vreg);
926 	if (!range)
927 		return -EINVAL;
928 
929 	return spmi_hw_selector_to_sw(vreg, voltage_sel, range);
930 }
931 
spmi_regulator_ftsmps426_get_voltage(struct regulator_dev * rdev)932 static int spmi_regulator_ftsmps426_get_voltage(struct regulator_dev *rdev)
933 {
934 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
935 	const struct spmi_voltage_range *range;
936 	u8 buf[2];
937 	int uV;
938 
939 	spmi_vreg_read(vreg, SPMI_FTSMPS426_REG_VOLTAGE_LSB, buf, 2);
940 
941 	uV = (((unsigned int)buf[1] << 8) | (unsigned int)buf[0]) * 1000;
942 	range = vreg->set_points->range;
943 
944 	return (uV - range->set_point_min_uV) / range->step_uV;
945 }
946 
spmi_regulator_single_map_voltage(struct regulator_dev * rdev,int min_uV,int max_uV)947 static int spmi_regulator_single_map_voltage(struct regulator_dev *rdev,
948 		int min_uV, int max_uV)
949 {
950 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
951 
952 	return spmi_regulator_select_voltage(vreg, min_uV, max_uV);
953 }
954 
spmi_regulator_single_range_set_voltage(struct regulator_dev * rdev,unsigned selector)955 static int spmi_regulator_single_range_set_voltage(struct regulator_dev *rdev,
956 						   unsigned selector)
957 {
958 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
959 	u8 sel = selector;
960 
961 	/*
962 	 * Certain types of regulators do not have a range select register so
963 	 * only voltage set register needs to be written.
964 	 */
965 	return spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &sel, 1);
966 }
967 
spmi_regulator_single_range_get_voltage(struct regulator_dev * rdev)968 static int spmi_regulator_single_range_get_voltage(struct regulator_dev *rdev)
969 {
970 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
971 	u8 selector;
972 	int ret;
973 
974 	ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &selector, 1);
975 	if (ret)
976 		return ret;
977 
978 	return selector;
979 }
980 
spmi_regulator_ult_lo_smps_set_voltage(struct regulator_dev * rdev,unsigned selector)981 static int spmi_regulator_ult_lo_smps_set_voltage(struct regulator_dev *rdev,
982 						  unsigned selector)
983 {
984 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
985 	int ret;
986 	u8 range_sel, voltage_sel;
987 
988 	ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel);
989 	if (ret)
990 		return ret;
991 
992 	/*
993 	 * Calculate VSET based on range
994 	 * In case of range 0: voltage_sel is a 7 bit value, can be written
995 	 *			witout any modification.
996 	 * In case of range 1: voltage_sel is a 5 bit value, bits[7-5] set to
997 	 *			[011].
998 	 */
999 	if (range_sel == 1)
1000 		voltage_sel |= ULT_SMPS_RANGE_SPLIT;
1001 
1002 	return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_VOLTAGE_SET,
1003 				     voltage_sel, 0xff);
1004 }
1005 
spmi_regulator_ult_lo_smps_get_voltage(struct regulator_dev * rdev)1006 static int spmi_regulator_ult_lo_smps_get_voltage(struct regulator_dev *rdev)
1007 {
1008 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1009 	const struct spmi_voltage_range *range;
1010 	u8 voltage_sel;
1011 
1012 	spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_SET, &voltage_sel, 1);
1013 
1014 	range = spmi_regulator_find_range(vreg);
1015 	if (!range)
1016 		return -EINVAL;
1017 
1018 	if (range->range_sel == 1)
1019 		voltage_sel &= ~ULT_SMPS_RANGE_SPLIT;
1020 
1021 	return spmi_hw_selector_to_sw(vreg, voltage_sel, range);
1022 }
1023 
spmi_regulator_common_list_voltage(struct regulator_dev * rdev,unsigned selector)1024 static int spmi_regulator_common_list_voltage(struct regulator_dev *rdev,
1025 			unsigned selector)
1026 {
1027 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1028 	int uV = 0;
1029 	int i;
1030 
1031 	if (selector >= vreg->set_points->n_voltages)
1032 		return 0;
1033 
1034 	for (i = 0; i < vreg->set_points->count; i++) {
1035 		if (selector < vreg->set_points->range[i].n_voltages) {
1036 			uV = selector * vreg->set_points->range[i].step_uV
1037 				+ vreg->set_points->range[i].set_point_min_uV;
1038 			break;
1039 		}
1040 
1041 		selector -= vreg->set_points->range[i].n_voltages;
1042 	}
1043 
1044 	return uV;
1045 }
1046 
1047 static int
spmi_regulator_common_set_bypass(struct regulator_dev * rdev,bool enable)1048 spmi_regulator_common_set_bypass(struct regulator_dev *rdev, bool enable)
1049 {
1050 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1051 	u8 mask = SPMI_COMMON_MODE_BYPASS_MASK;
1052 	u8 val = 0;
1053 
1054 	if (enable)
1055 		val = mask;
1056 
1057 	return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
1058 }
1059 
1060 static int
spmi_regulator_common_get_bypass(struct regulator_dev * rdev,bool * enable)1061 spmi_regulator_common_get_bypass(struct regulator_dev *rdev, bool *enable)
1062 {
1063 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1064 	u8 val;
1065 	int ret;
1066 
1067 	ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &val, 1);
1068 	*enable = val & SPMI_COMMON_MODE_BYPASS_MASK;
1069 
1070 	return ret;
1071 }
1072 
spmi_regulator_common_get_mode(struct regulator_dev * rdev)1073 static unsigned int spmi_regulator_common_get_mode(struct regulator_dev *rdev)
1074 {
1075 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1076 	u8 reg;
1077 
1078 	spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &reg, 1);
1079 
1080 	reg &= SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK;
1081 
1082 	switch (reg) {
1083 	case SPMI_COMMON_MODE_HPM_MASK:
1084 		return REGULATOR_MODE_NORMAL;
1085 	case SPMI_COMMON_MODE_AUTO_MASK:
1086 		return REGULATOR_MODE_FAST;
1087 	default:
1088 		return REGULATOR_MODE_IDLE;
1089 	}
1090 }
1091 
spmi_regulator_ftsmps426_get_mode(struct regulator_dev * rdev)1092 static unsigned int spmi_regulator_ftsmps426_get_mode(struct regulator_dev *rdev)
1093 {
1094 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1095 	u8 reg;
1096 
1097 	spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &reg, 1);
1098 
1099 	switch (reg) {
1100 	case SPMI_FTSMPS426_MODE_HPM_MASK:
1101 		return REGULATOR_MODE_NORMAL;
1102 	case SPMI_FTSMPS426_MODE_AUTO_MASK:
1103 		return REGULATOR_MODE_FAST;
1104 	default:
1105 		return REGULATOR_MODE_IDLE;
1106 	}
1107 }
1108 
spmi_regulator_hfsmps_get_mode(struct regulator_dev * rdev)1109 static unsigned int spmi_regulator_hfsmps_get_mode(struct regulator_dev *rdev)
1110 {
1111 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1112 	u8 reg;
1113 
1114 	spmi_vreg_read(vreg, SPMI_COMMON_REG_MODE, &reg, 1);
1115 
1116 	switch (reg) {
1117 	case SPMI_HFSMPS_MODE_HPM_MASK:
1118 		return REGULATOR_MODE_NORMAL;
1119 	case SPMI_HFSMPS_MODE_AUTO_MASK:
1120 		return REGULATOR_MODE_FAST;
1121 	default:
1122 		return REGULATOR_MODE_IDLE;
1123 	}
1124 }
1125 
1126 static int
spmi_regulator_common_set_mode(struct regulator_dev * rdev,unsigned int mode)1127 spmi_regulator_common_set_mode(struct regulator_dev *rdev, unsigned int mode)
1128 {
1129 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1130 	u8 mask = SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK;
1131 	u8 val;
1132 
1133 	switch (mode) {
1134 	case REGULATOR_MODE_NORMAL:
1135 		val = SPMI_COMMON_MODE_HPM_MASK;
1136 		break;
1137 	case REGULATOR_MODE_FAST:
1138 		val = SPMI_COMMON_MODE_AUTO_MASK;
1139 		break;
1140 	default:
1141 		val = 0;
1142 		break;
1143 	}
1144 
1145 	return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
1146 }
1147 
1148 static int
spmi_regulator_ftsmps426_set_mode(struct regulator_dev * rdev,unsigned int mode)1149 spmi_regulator_ftsmps426_set_mode(struct regulator_dev *rdev, unsigned int mode)
1150 {
1151 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1152 	u8 mask = SPMI_FTSMPS426_MODE_MASK;
1153 	u8 val;
1154 
1155 	switch (mode) {
1156 	case REGULATOR_MODE_NORMAL:
1157 		val = SPMI_FTSMPS426_MODE_HPM_MASK;
1158 		break;
1159 	case REGULATOR_MODE_FAST:
1160 		val = SPMI_FTSMPS426_MODE_AUTO_MASK;
1161 		break;
1162 	case REGULATOR_MODE_IDLE:
1163 		val = SPMI_FTSMPS426_MODE_LPM_MASK;
1164 		break;
1165 	default:
1166 		return -EINVAL;
1167 	}
1168 
1169 	return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
1170 }
1171 
1172 static int
spmi_regulator_hfsmps_set_mode(struct regulator_dev * rdev,unsigned int mode)1173 spmi_regulator_hfsmps_set_mode(struct regulator_dev *rdev, unsigned int mode)
1174 {
1175 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1176 	u8 mask = SPMI_HFSMPS_MODE_MASK;
1177 	u8 val;
1178 
1179 	switch (mode) {
1180 	case REGULATOR_MODE_NORMAL:
1181 		val = SPMI_HFSMPS_MODE_HPM_MASK;
1182 		break;
1183 	case REGULATOR_MODE_FAST:
1184 		val = SPMI_HFSMPS_MODE_AUTO_MASK;
1185 		break;
1186 	case REGULATOR_MODE_IDLE:
1187 		val = vreg->logical_type ==
1188 				SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS3 ?
1189 			SPMI_HFSMPS_MODE_RETENTION_MASK :
1190 			SPMI_HFSMPS_MODE_LPM_MASK;
1191 		break;
1192 	default:
1193 		return -EINVAL;
1194 	}
1195 
1196 	return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
1197 }
1198 
1199 static int
spmi_regulator_common_set_load(struct regulator_dev * rdev,int load_uA)1200 spmi_regulator_common_set_load(struct regulator_dev *rdev, int load_uA)
1201 {
1202 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1203 	unsigned int mode;
1204 
1205 	if (load_uA >= vreg->hpm_min_load)
1206 		mode = REGULATOR_MODE_NORMAL;
1207 	else
1208 		mode = REGULATOR_MODE_IDLE;
1209 
1210 	return spmi_regulator_common_set_mode(rdev, mode);
1211 }
1212 
spmi_regulator_common_set_pull_down(struct regulator_dev * rdev)1213 static int spmi_regulator_common_set_pull_down(struct regulator_dev *rdev)
1214 {
1215 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1216 	unsigned int mask = SPMI_COMMON_PULL_DOWN_ENABLE_MASK;
1217 
1218 	return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_PULL_DOWN,
1219 				     mask, mask);
1220 }
1221 
spmi_regulator_hfsmps_set_pull_down(struct regulator_dev * rdev)1222 static int spmi_regulator_hfsmps_set_pull_down(struct regulator_dev *rdev)
1223 {
1224 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1225 	unsigned int mask = SPMI_COMMON_PULL_DOWN_ENABLE_MASK;
1226 
1227 	return spmi_vreg_update_bits(vreg, SPMI_HFSMPS_REG_PULL_DOWN,
1228 				     mask, mask);
1229 }
1230 
spmi_regulator_common_set_soft_start(struct regulator_dev * rdev)1231 static int spmi_regulator_common_set_soft_start(struct regulator_dev *rdev)
1232 {
1233 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1234 	unsigned int mask = SPMI_LDO_SOFT_START_ENABLE_MASK;
1235 
1236 	return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_SOFT_START,
1237 				     mask, mask);
1238 }
1239 
spmi_regulator_set_ilim(struct regulator_dev * rdev,int ilim_uA)1240 static int spmi_regulator_set_ilim(struct regulator_dev *rdev, int ilim_uA)
1241 {
1242 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1243 	enum spmi_regulator_logical_type type = vreg->logical_type;
1244 	unsigned int current_reg;
1245 	u8 reg;
1246 	u8 mask = SPMI_BOOST_CURRENT_LIMIT_MASK |
1247 		  SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK;
1248 	int max = (SPMI_BOOST_CURRENT_LIMIT_MASK + 1) * 500;
1249 
1250 	if (type == SPMI_REGULATOR_LOGICAL_TYPE_BOOST)
1251 		current_reg = SPMI_BOOST_REG_CURRENT_LIMIT;
1252 	else
1253 		current_reg = SPMI_BOOST_BYP_REG_CURRENT_LIMIT;
1254 
1255 	if (ilim_uA > max || ilim_uA <= 0)
1256 		return -EINVAL;
1257 
1258 	reg = (ilim_uA - 1) / 500;
1259 	reg |= SPMI_BOOST_CURRENT_LIMIT_ENABLE_MASK;
1260 
1261 	return spmi_vreg_update_bits(vreg, current_reg, reg, mask);
1262 }
1263 
spmi_regulator_vs_clear_ocp(struct spmi_regulator * vreg)1264 static int spmi_regulator_vs_clear_ocp(struct spmi_regulator *vreg)
1265 {
1266 	int ret;
1267 
1268 	ret = spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE,
1269 		SPMI_COMMON_DISABLE, SPMI_COMMON_ENABLE_MASK);
1270 
1271 	vreg->vs_enable_time = ktime_get();
1272 
1273 	ret = spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_ENABLE,
1274 		SPMI_COMMON_ENABLE, SPMI_COMMON_ENABLE_MASK);
1275 
1276 	return ret;
1277 }
1278 
spmi_regulator_vs_ocp_work(struct work_struct * work)1279 static void spmi_regulator_vs_ocp_work(struct work_struct *work)
1280 {
1281 	struct delayed_work *dwork = to_delayed_work(work);
1282 	struct spmi_regulator *vreg
1283 		= container_of(dwork, struct spmi_regulator, ocp_work);
1284 
1285 	spmi_regulator_vs_clear_ocp(vreg);
1286 }
1287 
spmi_regulator_vs_ocp_isr(int irq,void * data)1288 static irqreturn_t spmi_regulator_vs_ocp_isr(int irq, void *data)
1289 {
1290 	struct spmi_regulator *vreg = data;
1291 	ktime_t ocp_irq_time;
1292 	s64 ocp_trigger_delay_us;
1293 
1294 	ocp_irq_time = ktime_get();
1295 	ocp_trigger_delay_us = ktime_us_delta(ocp_irq_time,
1296 						vreg->vs_enable_time);
1297 
1298 	/*
1299 	 * Reset the OCP count if there is a large delay between switch enable
1300 	 * and when OCP triggers.  This is indicative of a hotplug event as
1301 	 * opposed to a fault.
1302 	 */
1303 	if (ocp_trigger_delay_us > SPMI_VS_OCP_FAULT_DELAY_US)
1304 		vreg->ocp_count = 0;
1305 
1306 	/* Wait for switch output to settle back to 0 V after OCP triggered. */
1307 	udelay(SPMI_VS_OCP_FALL_DELAY_US);
1308 
1309 	vreg->ocp_count++;
1310 
1311 	if (vreg->ocp_count == 1) {
1312 		/* Immediately clear the over current condition. */
1313 		spmi_regulator_vs_clear_ocp(vreg);
1314 	} else if (vreg->ocp_count <= vreg->ocp_max_retries) {
1315 		/* Schedule the over current clear task to run later. */
1316 		schedule_delayed_work(&vreg->ocp_work,
1317 			msecs_to_jiffies(vreg->ocp_retry_delay_ms) + 1);
1318 	} else {
1319 		dev_err(vreg->dev,
1320 			"OCP triggered %d times; no further retries\n",
1321 			vreg->ocp_count);
1322 	}
1323 
1324 	return IRQ_HANDLED;
1325 }
1326 
1327 #define SAW3_VCTL_DATA_MASK	0xFF
1328 #define SAW3_VCTL_CLEAR_MASK	0x700FF
1329 #define SAW3_AVS_CTL_EN_MASK	0x1
1330 #define SAW3_AVS_CTL_TGGL_MASK	0x8000000
1331 #define SAW3_AVS_CTL_CLEAR_MASK	0x7efc00
1332 
1333 static struct regmap *saw_regmap;
1334 
spmi_saw_set_vdd(void * data)1335 static void spmi_saw_set_vdd(void *data)
1336 {
1337 	u32 vctl, data3, avs_ctl, pmic_sts;
1338 	bool avs_enabled = false;
1339 	unsigned long timeout;
1340 	u8 voltage_sel = *(u8 *)data;
1341 
1342 	regmap_read(saw_regmap, SAW3_AVS_CTL, &avs_ctl);
1343 	regmap_read(saw_regmap, SAW3_VCTL, &vctl);
1344 	regmap_read(saw_regmap, SAW3_SPM_PMIC_DATA_3, &data3);
1345 
1346 	/* select the band */
1347 	vctl &= ~SAW3_VCTL_CLEAR_MASK;
1348 	vctl |= (u32)voltage_sel;
1349 
1350 	data3 &= ~SAW3_VCTL_CLEAR_MASK;
1351 	data3 |= (u32)voltage_sel;
1352 
1353 	/* If AVS is enabled, switch it off during the voltage change */
1354 	avs_enabled = SAW3_AVS_CTL_EN_MASK & avs_ctl;
1355 	if (avs_enabled) {
1356 		avs_ctl &= ~SAW3_AVS_CTL_TGGL_MASK;
1357 		regmap_write(saw_regmap, SAW3_AVS_CTL, avs_ctl);
1358 	}
1359 
1360 	regmap_write(saw_regmap, SAW3_RST, 1);
1361 	regmap_write(saw_regmap, SAW3_VCTL, vctl);
1362 	regmap_write(saw_regmap, SAW3_SPM_PMIC_DATA_3, data3);
1363 
1364 	timeout = jiffies + usecs_to_jiffies(100);
1365 	do {
1366 		regmap_read(saw_regmap, SAW3_PMIC_STS, &pmic_sts);
1367 		pmic_sts &= SAW3_VCTL_DATA_MASK;
1368 		if (pmic_sts == (u32)voltage_sel)
1369 			break;
1370 
1371 		cpu_relax();
1372 
1373 	} while (time_before(jiffies, timeout));
1374 
1375 	/* After successful voltage change, switch the AVS back on */
1376 	if (avs_enabled) {
1377 		pmic_sts &= 0x3f;
1378 		avs_ctl &= ~SAW3_AVS_CTL_CLEAR_MASK;
1379 		avs_ctl |= ((pmic_sts - 4) << 10);
1380 		avs_ctl |= (pmic_sts << 17);
1381 		avs_ctl |= SAW3_AVS_CTL_TGGL_MASK;
1382 		regmap_write(saw_regmap, SAW3_AVS_CTL, avs_ctl);
1383 	}
1384 }
1385 
1386 static int
spmi_regulator_saw_set_voltage(struct regulator_dev * rdev,unsigned selector)1387 spmi_regulator_saw_set_voltage(struct regulator_dev *rdev, unsigned selector)
1388 {
1389 	struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
1390 	int ret;
1391 	u8 range_sel, voltage_sel;
1392 
1393 	ret = spmi_sw_selector_to_hw(vreg, selector, &range_sel, &voltage_sel);
1394 	if (ret)
1395 		return ret;
1396 
1397 	if (0 != range_sel) {
1398 		dev_dbg(&rdev->dev, "range_sel = %02X voltage_sel = %02X", \
1399 			range_sel, voltage_sel);
1400 		return -EINVAL;
1401 	}
1402 
1403 	/* Always do the SAW register writes on the first CPU */
1404 	return smp_call_function_single(0, spmi_saw_set_vdd, \
1405 					&voltage_sel, true);
1406 }
1407 
1408 static struct regulator_ops spmi_saw_ops = {};
1409 
1410 static const struct regulator_ops spmi_smps_ops = {
1411 	.enable			= regulator_enable_regmap,
1412 	.disable		= regulator_disable_regmap,
1413 	.is_enabled		= regulator_is_enabled_regmap,
1414 	.set_voltage_sel	= spmi_regulator_common_set_voltage,
1415 	.set_voltage_time_sel	= spmi_regulator_set_voltage_time_sel,
1416 	.get_voltage_sel	= spmi_regulator_common_get_voltage,
1417 	.map_voltage		= spmi_regulator_common_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_pull_down		= spmi_regulator_common_set_pull_down,
1423 };
1424 
1425 static const struct regulator_ops spmi_ldo_ops = {
1426 	.enable			= regulator_enable_regmap,
1427 	.disable		= regulator_disable_regmap,
1428 	.is_enabled		= regulator_is_enabled_regmap,
1429 	.set_voltage_sel	= spmi_regulator_common_set_voltage,
1430 	.get_voltage_sel	= spmi_regulator_common_get_voltage,
1431 	.map_voltage		= spmi_regulator_common_map_voltage,
1432 	.list_voltage		= spmi_regulator_common_list_voltage,
1433 	.set_mode		= spmi_regulator_common_set_mode,
1434 	.get_mode		= spmi_regulator_common_get_mode,
1435 	.set_load		= spmi_regulator_common_set_load,
1436 	.set_bypass		= spmi_regulator_common_set_bypass,
1437 	.get_bypass		= spmi_regulator_common_get_bypass,
1438 	.set_pull_down		= spmi_regulator_common_set_pull_down,
1439 	.set_soft_start		= spmi_regulator_common_set_soft_start,
1440 };
1441 
1442 static const struct regulator_ops spmi_ln_ldo_ops = {
1443 	.enable			= regulator_enable_regmap,
1444 	.disable		= regulator_disable_regmap,
1445 	.is_enabled		= regulator_is_enabled_regmap,
1446 	.set_voltage_sel	= spmi_regulator_common_set_voltage,
1447 	.get_voltage_sel	= spmi_regulator_common_get_voltage,
1448 	.map_voltage		= spmi_regulator_common_map_voltage,
1449 	.list_voltage		= spmi_regulator_common_list_voltage,
1450 	.set_bypass		= spmi_regulator_common_set_bypass,
1451 	.get_bypass		= spmi_regulator_common_get_bypass,
1452 };
1453 
1454 static const struct regulator_ops spmi_vs_ops = {
1455 	.enable			= spmi_regulator_vs_enable,
1456 	.disable		= regulator_disable_regmap,
1457 	.is_enabled		= regulator_is_enabled_regmap,
1458 	.set_pull_down		= spmi_regulator_common_set_pull_down,
1459 	.set_soft_start		= spmi_regulator_common_set_soft_start,
1460 	.set_over_current_protection = spmi_regulator_vs_ocp,
1461 	.set_mode		= spmi_regulator_common_set_mode,
1462 	.get_mode		= spmi_regulator_common_get_mode,
1463 };
1464 
1465 static const struct regulator_ops spmi_boost_ops = {
1466 	.enable			= regulator_enable_regmap,
1467 	.disable		= regulator_disable_regmap,
1468 	.is_enabled		= regulator_is_enabled_regmap,
1469 	.set_voltage_sel	= spmi_regulator_single_range_set_voltage,
1470 	.get_voltage_sel	= spmi_regulator_single_range_get_voltage,
1471 	.map_voltage		= spmi_regulator_single_map_voltage,
1472 	.list_voltage		= spmi_regulator_common_list_voltage,
1473 	.set_input_current_limit = spmi_regulator_set_ilim,
1474 };
1475 
1476 static const struct regulator_ops spmi_ftsmps_ops = {
1477 	.enable			= regulator_enable_regmap,
1478 	.disable		= regulator_disable_regmap,
1479 	.is_enabled		= regulator_is_enabled_regmap,
1480 	.set_voltage_sel	= spmi_regulator_common_set_voltage,
1481 	.set_voltage_time_sel	= spmi_regulator_set_voltage_time_sel,
1482 	.get_voltage_sel	= spmi_regulator_common_get_voltage,
1483 	.map_voltage		= spmi_regulator_common_map_voltage,
1484 	.list_voltage		= spmi_regulator_common_list_voltage,
1485 	.set_mode		= spmi_regulator_common_set_mode,
1486 	.get_mode		= spmi_regulator_common_get_mode,
1487 	.set_load		= spmi_regulator_common_set_load,
1488 	.set_pull_down		= spmi_regulator_common_set_pull_down,
1489 };
1490 
1491 static const struct regulator_ops spmi_ult_lo_smps_ops = {
1492 	.enable			= regulator_enable_regmap,
1493 	.disable		= regulator_disable_regmap,
1494 	.is_enabled		= regulator_is_enabled_regmap,
1495 	.set_voltage_sel	= spmi_regulator_ult_lo_smps_set_voltage,
1496 	.set_voltage_time_sel	= spmi_regulator_set_voltage_time_sel,
1497 	.get_voltage_sel	= spmi_regulator_ult_lo_smps_get_voltage,
1498 	.list_voltage		= spmi_regulator_common_list_voltage,
1499 	.set_mode		= spmi_regulator_common_set_mode,
1500 	.get_mode		= spmi_regulator_common_get_mode,
1501 	.set_load		= spmi_regulator_common_set_load,
1502 	.set_pull_down		= spmi_regulator_common_set_pull_down,
1503 };
1504 
1505 static const struct regulator_ops spmi_ult_ho_smps_ops = {
1506 	.enable			= regulator_enable_regmap,
1507 	.disable		= regulator_disable_regmap,
1508 	.is_enabled		= regulator_is_enabled_regmap,
1509 	.set_voltage_sel	= spmi_regulator_single_range_set_voltage,
1510 	.set_voltage_time_sel	= spmi_regulator_set_voltage_time_sel,
1511 	.get_voltage_sel	= spmi_regulator_single_range_get_voltage,
1512 	.map_voltage		= spmi_regulator_single_map_voltage,
1513 	.list_voltage		= spmi_regulator_common_list_voltage,
1514 	.set_mode		= spmi_regulator_common_set_mode,
1515 	.get_mode		= spmi_regulator_common_get_mode,
1516 	.set_load		= spmi_regulator_common_set_load,
1517 	.set_pull_down		= spmi_regulator_common_set_pull_down,
1518 };
1519 
1520 static const struct regulator_ops spmi_ult_ldo_ops = {
1521 	.enable			= regulator_enable_regmap,
1522 	.disable		= regulator_disable_regmap,
1523 	.is_enabled		= regulator_is_enabled_regmap,
1524 	.set_voltage_sel	= spmi_regulator_single_range_set_voltage,
1525 	.get_voltage_sel	= spmi_regulator_single_range_get_voltage,
1526 	.map_voltage		= spmi_regulator_single_map_voltage,
1527 	.list_voltage		= spmi_regulator_common_list_voltage,
1528 	.set_mode		= spmi_regulator_common_set_mode,
1529 	.get_mode		= spmi_regulator_common_get_mode,
1530 	.set_load		= spmi_regulator_common_set_load,
1531 	.set_bypass		= spmi_regulator_common_set_bypass,
1532 	.get_bypass		= spmi_regulator_common_get_bypass,
1533 	.set_pull_down		= spmi_regulator_common_set_pull_down,
1534 	.set_soft_start		= spmi_regulator_common_set_soft_start,
1535 };
1536 
1537 static const struct regulator_ops spmi_ftsmps426_ops = {
1538 	.enable			= regulator_enable_regmap,
1539 	.disable		= regulator_disable_regmap,
1540 	.is_enabled		= regulator_is_enabled_regmap,
1541 	.set_voltage_sel	= spmi_regulator_ftsmps426_set_voltage,
1542 	.set_voltage_time_sel	= spmi_regulator_set_voltage_time_sel,
1543 	.get_voltage_sel	= spmi_regulator_ftsmps426_get_voltage,
1544 	.map_voltage		= spmi_regulator_single_map_voltage,
1545 	.list_voltage		= spmi_regulator_common_list_voltage,
1546 	.set_mode		= spmi_regulator_ftsmps426_set_mode,
1547 	.get_mode		= spmi_regulator_ftsmps426_get_mode,
1548 	.set_load		= spmi_regulator_common_set_load,
1549 	.set_pull_down		= spmi_regulator_common_set_pull_down,
1550 };
1551 
1552 static const struct regulator_ops spmi_hfs430_ops = {
1553 	.enable			= regulator_enable_regmap,
1554 	.disable		= regulator_disable_regmap,
1555 	.is_enabled		= regulator_is_enabled_regmap,
1556 	.set_voltage_sel	= spmi_regulator_ftsmps426_set_voltage,
1557 	.set_voltage_time_sel	= spmi_regulator_set_voltage_time_sel,
1558 	.get_voltage_sel	= spmi_regulator_ftsmps426_get_voltage,
1559 	.map_voltage		= spmi_regulator_single_map_voltage,
1560 	.list_voltage		= spmi_regulator_common_list_voltage,
1561 	.set_mode		= spmi_regulator_ftsmps426_set_mode,
1562 	.get_mode		= spmi_regulator_ftsmps426_get_mode,
1563 };
1564 
1565 static const struct regulator_ops spmi_hfsmps_ops = {
1566 	.enable			= regulator_enable_regmap,
1567 	.disable		= regulator_disable_regmap,
1568 	.is_enabled		= regulator_is_enabled_regmap,
1569 	.set_voltage_sel	= spmi_regulator_ftsmps426_set_voltage,
1570 	.set_voltage_time_sel	= spmi_regulator_set_voltage_time_sel,
1571 	.get_voltage_sel	= spmi_regulator_ftsmps426_get_voltage,
1572 	.map_voltage		= spmi_regulator_single_map_voltage,
1573 	.list_voltage		= spmi_regulator_common_list_voltage,
1574 	.set_mode		= spmi_regulator_hfsmps_set_mode,
1575 	.get_mode		= spmi_regulator_hfsmps_get_mode,
1576 	.set_load		= spmi_regulator_common_set_load,
1577 	.set_pull_down		= spmi_regulator_hfsmps_set_pull_down,
1578 };
1579 
1580 /* Maximum possible digital major revision value */
1581 #define INF 0xFF
1582 
1583 static const struct spmi_regulator_mapping supported_regulators[] = {
1584 	/*           type subtype dig_min dig_max ltype ops setpoints hpm_min */
1585 	SPMI_VREG(LDO,   HT_P600,  0, INF, HFS430, hfs430, ht_p600, 10000),
1586 	SPMI_VREG(LDO,   HT_P150,  0, INF, HFS430, hfs430, ht_p150, 10000),
1587 	SPMI_VREG(BUCK,  GP_CTL,   0, INF, SMPS,   smps,   smps,   100000),
1588 	SPMI_VREG(BUCK,  HFS430,   0,   3, HFS430, hfs430, hfs430,  10000),
1589 	SPMI_VREG(BUCK,  HFSMPS_510, 4, INF, HFSMPS, hfsmps, hfs430, 100000),
1590 	SPMI_VREG(LDO,   N300,     0, INF, LDO,    ldo,    nldo1,   10000),
1591 	SPMI_VREG(LDO,   N600,     0,   0, LDO,    ldo,    nldo2,   10000),
1592 	SPMI_VREG(LDO,   N1200,    0,   0, LDO,    ldo,    nldo2,   10000),
1593 	SPMI_VREG(LDO,   N600,     1, INF, LDO,    ldo,    nldo3,   10000),
1594 	SPMI_VREG(LDO,   N1200,    1, INF, LDO,    ldo,    nldo3,   10000),
1595 	SPMI_VREG(LDO,   N600_ST,  0,   0, LDO,    ldo,    nldo2,   10000),
1596 	SPMI_VREG(LDO,   N1200_ST, 0,   0, LDO,    ldo,    nldo2,   10000),
1597 	SPMI_VREG(LDO,   N600_ST,  1, INF, LDO,    ldo,    nldo3,   10000),
1598 	SPMI_VREG(LDO,   N1200_ST, 1, INF, LDO,    ldo,    nldo3,   10000),
1599 	SPMI_VREG(LDO,   P50,      0, INF, LDO,    ldo,    pldo,     5000),
1600 	SPMI_VREG(LDO,   P150,     0, INF, LDO,    ldo,    pldo,    10000),
1601 	SPMI_VREG(LDO,   P300,     0, INF, LDO,    ldo,    pldo,    10000),
1602 	SPMI_VREG(LDO,   P600,     0, INF, LDO,    ldo,    pldo,    10000),
1603 	SPMI_VREG(LDO,   P1200,    0, INF, LDO,    ldo,    pldo,    10000),
1604 	SPMI_VREG(LDO,   LN,       0, INF, LN_LDO, ln_ldo, ln_ldo,      0),
1605 	SPMI_VREG(LDO,   LV_P50,   0, INF, LDO,    ldo,    pldo,     5000),
1606 	SPMI_VREG(LDO,   LV_P150,  0, INF, LDO,    ldo,    pldo,    10000),
1607 	SPMI_VREG(LDO,   LV_P300,  0, INF, LDO,    ldo,    pldo,    10000),
1608 	SPMI_VREG(LDO,   LV_P600,  0, INF, LDO,    ldo,    pldo,    10000),
1609 	SPMI_VREG(LDO,   LV_P1200, 0, INF, LDO,    ldo,    pldo,    10000),
1610 	SPMI_VREG(LDO, HT_N300_ST,   0, INF, FTSMPS426, ftsmps426,
1611 							ht_nldo,   30000),
1612 	SPMI_VREG(LDO, HT_N600_ST,   0, INF, FTSMPS426, ftsmps426,
1613 							ht_nldo,   30000),
1614 	SPMI_VREG(LDO, HT_N1200_ST,  0, INF, FTSMPS426, ftsmps426,
1615 							ht_nldo,   30000),
1616 	SPMI_VREG(LDO, HT_LVP150,    0, INF, FTSMPS426, ftsmps426,
1617 							ht_lvpldo, 10000),
1618 	SPMI_VREG(LDO, HT_LVP300,    0, INF, FTSMPS426, ftsmps426,
1619 							ht_lvpldo, 10000),
1620 	SPMI_VREG(LDO, L660_N300_ST, 0, INF, FTSMPS426, ftsmps426,
1621 							nldo660,   10000),
1622 	SPMI_VREG(LDO, L660_N600_ST, 0, INF, FTSMPS426, ftsmps426,
1623 							nldo660,   10000),
1624 	SPMI_VREG(LDO, L660_P50,     0, INF, FTSMPS426, ftsmps426,
1625 							pldo660,   10000),
1626 	SPMI_VREG(LDO, L660_P150,    0, INF, FTSMPS426, ftsmps426,
1627 							pldo660,   10000),
1628 	SPMI_VREG(LDO, L660_P600,    0, INF, FTSMPS426, ftsmps426,
1629 							pldo660,   10000),
1630 	SPMI_VREG(LDO, L660_LVP150,  0, INF, FTSMPS426, ftsmps426,
1631 							ht_lvpldo, 10000),
1632 	SPMI_VREG(LDO, L660_LVP600,  0, INF, FTSMPS426, ftsmps426,
1633 							ht_lvpldo, 10000),
1634 	SPMI_VREG_VS(LV100,        0, INF),
1635 	SPMI_VREG_VS(LV300,        0, INF),
1636 	SPMI_VREG_VS(MV300,        0, INF),
1637 	SPMI_VREG_VS(MV500,        0, INF),
1638 	SPMI_VREG_VS(HDMI,         0, INF),
1639 	SPMI_VREG_VS(OTG,          0, INF),
1640 	SPMI_VREG(BOOST, 5V_BOOST, 0, INF, BOOST,  boost,  boost,       0),
1641 	SPMI_VREG(FTS,   FTS_CTL,  0, INF, FTSMPS, ftsmps, ftsmps, 100000),
1642 	SPMI_VREG(FTS, FTS2p5_CTL, 0, INF, FTSMPS, ftsmps, ftsmps2p5, 100000),
1643 	SPMI_VREG(FTS, FTS426_CTL, 0, INF, FTSMPS426, ftsmps426, ftsmps426, 100000),
1644 	SPMI_VREG(BOOST_BYP, BB_2A, 0, INF, BOOST_BYP, boost, boost_byp, 0),
1645 	SPMI_VREG(ULT_BUCK, ULT_HF_CTL1, 0, INF, ULT_LO_SMPS, ult_lo_smps,
1646 						ult_lo_smps,   100000),
1647 	SPMI_VREG(ULT_BUCK, ULT_HF_CTL2, 0, INF, ULT_LO_SMPS, ult_lo_smps,
1648 						ult_lo_smps,   100000),
1649 	SPMI_VREG(ULT_BUCK, ULT_HF_CTL3, 0, INF, ULT_LO_SMPS, ult_lo_smps,
1650 						ult_lo_smps,   100000),
1651 	SPMI_VREG(ULT_BUCK, ULT_HF_CTL4, 0, INF, ULT_HO_SMPS, ult_ho_smps,
1652 						ult_ho_smps,   100000),
1653 	SPMI_VREG(ULT_LDO, N300_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
1654 	SPMI_VREG(ULT_LDO, N600_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
1655 	SPMI_VREG(ULT_LDO, N900_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
1656 	SPMI_VREG(ULT_LDO, N1200_ST, 0, INF, ULT_LDO, ult_ldo, ult_nldo, 10000),
1657 	SPMI_VREG(ULT_LDO, LV_P50,   0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1658 	SPMI_VREG(ULT_LDO, LV_P150,  0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1659 	SPMI_VREG(ULT_LDO, LV_P300,  0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1660 	SPMI_VREG(ULT_LDO, LV_P450,  0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1661 	SPMI_VREG(ULT_LDO, P600,     0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1662 	SPMI_VREG(ULT_LDO, P300,     0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1663 	SPMI_VREG(ULT_LDO, P150,     0, INF, ULT_LDO, ult_ldo, ult_pldo, 10000),
1664 	SPMI_VREG(ULT_LDO, P50,     0, INF, ULT_LDO, ult_ldo, ult_pldo, 5000),
1665 	SPMI_VREG(LDO, LV_P150_510, 0, INF, LDO_510, hfsmps, ht_lvpldo, 10000),
1666 	SPMI_VREG(LDO, LV_P300_510, 0, INF, LDO_510, hfsmps, ht_lvpldo, 10000),
1667 	SPMI_VREG(LDO, LV_P600_510, 0, INF, LDO_510, hfsmps, ht_lvpldo, 10000),
1668 	SPMI_VREG(LDO, MV_P50_510,  0, INF, LDO_510, hfsmps, pldo660, 10000),
1669 	SPMI_VREG(LDO, MV_P150_510, 0, INF, LDO_510, hfsmps, pldo660, 10000),
1670 	SPMI_VREG(LDO, MV_P600_510, 0, INF, LDO_510, hfsmps, pldo660, 10000),
1671 	SPMI_VREG(LDO, N300_510,    0, INF, LDO_510, hfsmps, nldo_510, 10000),
1672 	SPMI_VREG(LDO, N600_510,    0, INF, LDO_510, hfsmps, nldo_510, 10000),
1673 	SPMI_VREG(LDO, N1200_510,   0, INF, LDO_510, hfsmps, nldo_510, 10000),
1674 	SPMI_VREG(FTS, FTSMPS_510,  0, INF, FTSMPS3, hfsmps, ftsmps510, 100000),
1675 };
1676 
spmi_calculate_num_voltages(struct spmi_voltage_set_points * points)1677 static void spmi_calculate_num_voltages(struct spmi_voltage_set_points *points)
1678 {
1679 	unsigned int n;
1680 	struct spmi_voltage_range *range = points->range;
1681 
1682 	for (; range < points->range + points->count; range++) {
1683 		n = 0;
1684 		if (range->set_point_max_uV) {
1685 			n = range->set_point_max_uV - range->set_point_min_uV;
1686 			n = (n / range->step_uV) + 1;
1687 		}
1688 		range->n_voltages = n;
1689 		points->n_voltages += n;
1690 	}
1691 }
1692 
spmi_regulator_match(struct spmi_regulator * vreg,u16 force_type)1693 static int spmi_regulator_match(struct spmi_regulator *vreg, u16 force_type)
1694 {
1695 	const struct spmi_regulator_mapping *mapping;
1696 	int ret, i;
1697 	u32 dig_major_rev;
1698 	u8 version[SPMI_COMMON_REG_SUBTYPE - SPMI_COMMON_REG_DIG_MAJOR_REV + 1];
1699 	u8 type, subtype;
1700 
1701 	ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_DIG_MAJOR_REV, version,
1702 		ARRAY_SIZE(version));
1703 	if (ret) {
1704 		dev_dbg(vreg->dev, "could not read version registers\n");
1705 		return ret;
1706 	}
1707 	dig_major_rev	= version[SPMI_COMMON_REG_DIG_MAJOR_REV
1708 					- SPMI_COMMON_REG_DIG_MAJOR_REV];
1709 
1710 	if (!force_type) {
1711 		type		= version[SPMI_COMMON_REG_TYPE -
1712 					  SPMI_COMMON_REG_DIG_MAJOR_REV];
1713 		subtype		= version[SPMI_COMMON_REG_SUBTYPE -
1714 					  SPMI_COMMON_REG_DIG_MAJOR_REV];
1715 	} else {
1716 		type = force_type >> 8;
1717 		subtype = force_type;
1718 	}
1719 
1720 	for (i = 0; i < ARRAY_SIZE(supported_regulators); i++) {
1721 		mapping = &supported_regulators[i];
1722 		if (mapping->type == type && mapping->subtype == subtype
1723 		    && mapping->revision_min <= dig_major_rev
1724 		    && mapping->revision_max >= dig_major_rev)
1725 			goto found;
1726 	}
1727 
1728 	dev_err(vreg->dev,
1729 		"unsupported regulator: name=%s type=0x%02X, subtype=0x%02X, dig major rev=0x%02X\n",
1730 		vreg->desc.name, type, subtype, dig_major_rev);
1731 
1732 	return -ENODEV;
1733 
1734 found:
1735 	vreg->logical_type	= mapping->logical_type;
1736 	vreg->set_points	= mapping->set_points;
1737 	vreg->hpm_min_load	= mapping->hpm_min_load;
1738 	vreg->desc.ops		= mapping->ops;
1739 
1740 	if (mapping->set_points) {
1741 		if (!mapping->set_points->n_voltages)
1742 			spmi_calculate_num_voltages(mapping->set_points);
1743 		vreg->desc.n_voltages = mapping->set_points->n_voltages;
1744 	}
1745 
1746 	return 0;
1747 }
1748 
spmi_regulator_init_slew_rate(struct spmi_regulator * vreg)1749 static int spmi_regulator_init_slew_rate(struct spmi_regulator *vreg)
1750 {
1751 	int ret;
1752 	u8 reg = 0;
1753 	int step, delay, slew_rate, step_delay;
1754 	const struct spmi_voltage_range *range;
1755 
1756 	ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_STEP_CTRL, &reg, 1);
1757 	if (ret) {
1758 		dev_err(vreg->dev, "spmi read failed, ret=%d\n", ret);
1759 		return ret;
1760 	}
1761 
1762 	range = spmi_regulator_find_range(vreg);
1763 	if (!range)
1764 		return -EINVAL;
1765 
1766 	switch (vreg->logical_type) {
1767 	case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS:
1768 		step_delay = SPMI_FTSMPS_STEP_DELAY;
1769 		break;
1770 	default:
1771 		step_delay = SPMI_DEFAULT_STEP_DELAY;
1772 		break;
1773 	}
1774 
1775 	step = reg & SPMI_FTSMPS_STEP_CTRL_STEP_MASK;
1776 	step >>= SPMI_FTSMPS_STEP_CTRL_STEP_SHIFT;
1777 
1778 	delay = reg & SPMI_FTSMPS_STEP_CTRL_DELAY_MASK;
1779 	delay >>= SPMI_FTSMPS_STEP_CTRL_DELAY_SHIFT;
1780 
1781 	/* slew_rate has units of uV/us */
1782 	slew_rate = SPMI_FTSMPS_CLOCK_RATE * range->step_uV * (1 << step);
1783 	slew_rate /= 1000 * (step_delay << delay);
1784 	slew_rate *= SPMI_FTSMPS_STEP_MARGIN_NUM;
1785 	slew_rate /= SPMI_FTSMPS_STEP_MARGIN_DEN;
1786 
1787 	/* Ensure that the slew rate is greater than 0 */
1788 	vreg->slew_rate = max(slew_rate, 1);
1789 
1790 	return ret;
1791 }
1792 
spmi_regulator_init_slew_rate_ftsmps426(struct spmi_regulator * vreg,int clock_rate)1793 static int spmi_regulator_init_slew_rate_ftsmps426(struct spmi_regulator *vreg,
1794 						   int clock_rate)
1795 {
1796 	int ret;
1797 	u8 reg = 0;
1798 	int delay, slew_rate;
1799 	const struct spmi_voltage_range *range = &vreg->set_points->range[0];
1800 
1801 	ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_STEP_CTRL, &reg, 1);
1802 	if (ret) {
1803 		dev_err(vreg->dev, "spmi read failed, ret=%d\n", ret);
1804 		return ret;
1805 	}
1806 
1807 	delay = reg & SPMI_FTSMPS426_STEP_CTRL_DELAY_MASK;
1808 	delay >>= SPMI_FTSMPS426_STEP_CTRL_DELAY_SHIFT;
1809 
1810 	/* slew_rate has units of uV/us */
1811 	slew_rate = clock_rate * range->step_uV;
1812 	slew_rate /= 1000 * (SPMI_FTSMPS426_STEP_DELAY << delay);
1813 	slew_rate *= SPMI_FTSMPS426_STEP_MARGIN_NUM;
1814 	slew_rate /= SPMI_FTSMPS426_STEP_MARGIN_DEN;
1815 
1816 	/* Ensure that the slew rate is greater than 0 */
1817 	vreg->slew_rate = max(slew_rate, 1);
1818 
1819 	return ret;
1820 }
1821 
spmi_regulator_init_slew_rate_hfsmps(struct spmi_regulator * vreg)1822 static int spmi_regulator_init_slew_rate_hfsmps(struct spmi_regulator *vreg)
1823 {
1824 	int ret;
1825 	u8 reg = 0;
1826 	int delay;
1827 
1828 	ret = spmi_vreg_read(vreg, SPMI_HFSMPS_REG_STEP_CTRL, &reg, 1);
1829 	if (ret) {
1830 		dev_err(vreg->dev, "spmi read failed, ret=%d\n", ret);
1831 		return ret;
1832 	}
1833 
1834 	delay = reg & SPMI_FTSMPS426_STEP_CTRL_DELAY_MASK;
1835 	delay >>= SPMI_FTSMPS426_STEP_CTRL_DELAY_SHIFT;
1836 
1837 	vreg->slew_rate = SPMI_HFSMPS_SLEW_RATE_38p4 >> delay;
1838 
1839 	return ret;
1840 }
1841 
spmi_regulator_init_registers(struct spmi_regulator * vreg,const struct spmi_regulator_init_data * data)1842 static int spmi_regulator_init_registers(struct spmi_regulator *vreg,
1843 				const struct spmi_regulator_init_data *data)
1844 {
1845 	int ret;
1846 	enum spmi_regulator_logical_type type;
1847 	u8 ctrl_reg[8], reg, mask;
1848 
1849 	type = vreg->logical_type;
1850 
1851 	ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8);
1852 	if (ret)
1853 		return ret;
1854 
1855 	/* Set up enable pin control. */
1856 	if (!(data->pin_ctrl_enable & SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT)) {
1857 		switch (type) {
1858 		case SPMI_REGULATOR_LOGICAL_TYPE_SMPS:
1859 		case SPMI_REGULATOR_LOGICAL_TYPE_LDO:
1860 		case SPMI_REGULATOR_LOGICAL_TYPE_VS:
1861 			ctrl_reg[SPMI_COMMON_IDX_ENABLE] &=
1862 				~SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK;
1863 			ctrl_reg[SPMI_COMMON_IDX_ENABLE] |=
1864 				data->pin_ctrl_enable & SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK;
1865 			break;
1866 		default:
1867 			break;
1868 		}
1869 	}
1870 
1871 	/* Set up mode pin control. */
1872 	if (!(data->pin_ctrl_hpm & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) {
1873 		switch (type) {
1874 		case SPMI_REGULATOR_LOGICAL_TYPE_SMPS:
1875 		case SPMI_REGULATOR_LOGICAL_TYPE_LDO:
1876 			ctrl_reg[SPMI_COMMON_IDX_MODE] &=
1877 				~SPMI_COMMON_MODE_FOLLOW_ALL_MASK;
1878 			ctrl_reg[SPMI_COMMON_IDX_MODE] |=
1879 				data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_ALL_MASK;
1880 			break;
1881 		case SPMI_REGULATOR_LOGICAL_TYPE_VS:
1882 		case SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS:
1883 		case SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS:
1884 		case SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO:
1885 			ctrl_reg[SPMI_COMMON_IDX_MODE] &=
1886 				~SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
1887 			ctrl_reg[SPMI_COMMON_IDX_MODE] |=
1888 				data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
1889 			break;
1890 		default:
1891 			break;
1892 		}
1893 	}
1894 
1895 	/* Write back any control register values that were modified. */
1896 	ret = spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8);
1897 	if (ret)
1898 		return ret;
1899 
1900 	/* Set soft start strength and over current protection for VS. */
1901 	if (type == SPMI_REGULATOR_LOGICAL_TYPE_VS) {
1902 		if (data->vs_soft_start_strength
1903 				!= SPMI_VS_SOFT_START_STR_HW_DEFAULT) {
1904 			reg = data->vs_soft_start_strength
1905 				& SPMI_VS_SOFT_START_SEL_MASK;
1906 			mask = SPMI_VS_SOFT_START_SEL_MASK;
1907 			return spmi_vreg_update_bits(vreg,
1908 						     SPMI_VS_REG_SOFT_START,
1909 						     reg, mask);
1910 		}
1911 	}
1912 
1913 	return 0;
1914 }
1915 
spmi_regulator_get_dt_config(struct spmi_regulator * vreg,struct device_node * node,struct spmi_regulator_init_data * data)1916 static void spmi_regulator_get_dt_config(struct spmi_regulator *vreg,
1917 		struct device_node *node, struct spmi_regulator_init_data *data)
1918 {
1919 	/*
1920 	 * Initialize configuration parameters to use hardware default in case
1921 	 * no value is specified via device tree.
1922 	 */
1923 	data->pin_ctrl_enable	    = SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT;
1924 	data->pin_ctrl_hpm	    = SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT;
1925 	data->vs_soft_start_strength	= SPMI_VS_SOFT_START_STR_HW_DEFAULT;
1926 
1927 	/* These bindings are optional, so it is okay if they aren't found. */
1928 	of_property_read_u32(node, "qcom,ocp-max-retries",
1929 		&vreg->ocp_max_retries);
1930 	of_property_read_u32(node, "qcom,ocp-retry-delay",
1931 		&vreg->ocp_retry_delay_ms);
1932 	of_property_read_u32(node, "qcom,pin-ctrl-enable",
1933 		&data->pin_ctrl_enable);
1934 	of_property_read_u32(node, "qcom,pin-ctrl-hpm", &data->pin_ctrl_hpm);
1935 	of_property_read_u32(node, "qcom,vs-soft-start-strength",
1936 		&data->vs_soft_start_strength);
1937 }
1938 
spmi_regulator_of_map_mode(unsigned int mode)1939 static unsigned int spmi_regulator_of_map_mode(unsigned int mode)
1940 {
1941 	if (mode == 1)
1942 		return REGULATOR_MODE_NORMAL;
1943 	if (mode == 2)
1944 		return REGULATOR_MODE_FAST;
1945 
1946 	return REGULATOR_MODE_IDLE;
1947 }
1948 
spmi_regulator_of_parse(struct device_node * node,const struct regulator_desc * desc,struct regulator_config * config)1949 static int spmi_regulator_of_parse(struct device_node *node,
1950 			    const struct regulator_desc *desc,
1951 			    struct regulator_config *config)
1952 {
1953 	struct spmi_regulator_init_data data = { };
1954 	struct spmi_regulator *vreg = config->driver_data;
1955 	struct device *dev = config->dev;
1956 	int ret;
1957 
1958 	spmi_regulator_get_dt_config(vreg, node, &data);
1959 
1960 	if (!vreg->ocp_max_retries)
1961 		vreg->ocp_max_retries = SPMI_VS_OCP_DEFAULT_MAX_RETRIES;
1962 	if (!vreg->ocp_retry_delay_ms)
1963 		vreg->ocp_retry_delay_ms = SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS;
1964 
1965 	ret = spmi_regulator_init_registers(vreg, &data);
1966 	if (ret) {
1967 		dev_err(dev, "common initialization failed, ret=%d\n", ret);
1968 		return ret;
1969 	}
1970 
1971 	switch (vreg->logical_type) {
1972 	case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS:
1973 	case SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS:
1974 	case SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS:
1975 	case SPMI_REGULATOR_LOGICAL_TYPE_SMPS:
1976 		ret = spmi_regulator_init_slew_rate(vreg);
1977 		if (ret)
1978 			return ret;
1979 		break;
1980 	case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS426:
1981 		ret = spmi_regulator_init_slew_rate_ftsmps426(vreg,
1982 						SPMI_FTSMPS426_CLOCK_RATE);
1983 		if (ret)
1984 			return ret;
1985 		break;
1986 	case SPMI_REGULATOR_LOGICAL_TYPE_HFS430:
1987 		ret = spmi_regulator_init_slew_rate_ftsmps426(vreg,
1988 							SPMI_HFS430_CLOCK_RATE);
1989 		if (ret)
1990 			return ret;
1991 		break;
1992 	case SPMI_REGULATOR_LOGICAL_TYPE_HFSMPS:
1993 	case SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS3:
1994 		ret = spmi_regulator_init_slew_rate_hfsmps(vreg);
1995 		if (ret)
1996 			return ret;
1997 		break;
1998 	default:
1999 		break;
2000 	}
2001 
2002 	if (vreg->logical_type != SPMI_REGULATOR_LOGICAL_TYPE_VS)
2003 		vreg->ocp_irq = 0;
2004 
2005 	if (vreg->ocp_irq) {
2006 		ret = devm_request_irq(dev, vreg->ocp_irq,
2007 			spmi_regulator_vs_ocp_isr, IRQF_TRIGGER_RISING, "ocp",
2008 			vreg);
2009 		if (ret < 0) {
2010 			dev_err(dev, "failed to request irq %d, ret=%d\n",
2011 				vreg->ocp_irq, ret);
2012 			return ret;
2013 		}
2014 
2015 		ret = devm_delayed_work_autocancel(dev, &vreg->ocp_work,
2016 						   spmi_regulator_vs_ocp_work);
2017 		if (ret)
2018 			return ret;
2019 	}
2020 
2021 	return 0;
2022 }
2023 
2024 static const struct spmi_regulator_data pm6125_regulators[] = {
2025 	{ "s1", 0x1400, "vdd_s1" },
2026 	{ "s2", 0x1700, "vdd_s2" },
2027 	{ "s3", 0x1a00, "vdd_s3" },
2028 	{ "s4", 0x1d00, "vdd_s4" },
2029 	{ "s5", 0x2000, "vdd_s5" },
2030 	{ "s6", 0x2300, "vdd_s6" },
2031 	{ "s7", 0x2600, "vdd_s7" },
2032 	{ "s8", 0x2900, "vdd_s8" },
2033 	{ "l1", 0x4000, "vdd_l1_l7_l17_l18" },
2034 	{ "l2", 0x4100, "vdd_l2_l3_l4" },
2035 	{ "l3", 0x4200, "vdd_l2_l3_l4" },
2036 	{ "l4", 0x4300, "vdd_l2_l3_l4" },
2037 	{ "l5", 0x4400, "vdd_l5_l15_l19_l20_l21_l22" },
2038 	{ "l6", 0x4500, "vdd_l6_l8" },
2039 	{ "l7", 0x4600, "vdd_l1_l7_l17_l18" },
2040 	{ "l8", 0x4700, "vdd_l6_l8" },
2041 	{ "l9", 0x4800, "vdd_l9_l11" },
2042 	{ "l10", 0x4900, "vdd_l10_l13_l14" },
2043 	{ "l11", 0x4a00, "vdd_l9_l11" },
2044 	{ "l12", 0x4b00, "vdd_l12_l16" },
2045 	{ "l13", 0x4c00, "vdd_l10_l13_l14" },
2046 	{ "l14", 0x4d00, "vdd_l10_l13_l14" },
2047 	{ "l15", 0x4e00, "vdd_l5_l15_l19_l20_l21_l22" },
2048 	{ "l16", 0x4f00, "vdd_l12_l16" },
2049 	{ "l17", 0x5000, "vdd_l1_l7_l17_l18" },
2050 	{ "l18", 0x5100, "vdd_l1_l7_l17_l18" },
2051 	{ "l19", 0x5200, "vdd_l5_l15_l19_l20_l21_l22" },
2052 	{ "l20", 0x5300, "vdd_l5_l15_l19_l20_l21_l22" },
2053 	{ "l21", 0x5400, "vdd_l5_l15_l19_l20_l21_l22" },
2054 	{ "l22", 0x5500, "vdd_l5_l15_l19_l20_l21_l22" },
2055 	{ "l23", 0x5600, "vdd_l23_l24" },
2056 	{ "l24", 0x5700, "vdd_l23_l24" },
2057 };
2058 
2059 static const struct spmi_regulator_data pm660_regulators[] = {
2060 	{ "s1", 0x1400, "vdd_s1", },
2061 	{ "s2", 0x1700, "vdd_s2", },
2062 	{ "s3", 0x1a00, "vdd_s3", },
2063 	{ "s4", 0x1d00, "vdd_s3", },
2064 	{ "s5", 0x2000, "vdd_s5", },
2065 	{ "s6", 0x2300, "vdd_s6", },
2066 	{ "l1", 0x4000, "vdd_l1_l6_l7", },
2067 	{ "l2", 0x4100, "vdd_l2_l3", },
2068 	{ "l3", 0x4200, "vdd_l2_l3", },
2069 	/* l4 is unaccessible on PM660 */
2070 	{ "l5", 0x4400, "vdd_l5", },
2071 	{ "l6", 0x4500, "vdd_l1_l6_l7", },
2072 	{ "l7", 0x4600, "vdd_l1_l6_l7", },
2073 	{ "l8", 0x4700, "vdd_l8_l9_l10_l11_l12_l13_l14", },
2074 	{ "l9", 0x4800, "vdd_l8_l9_l10_l11_l12_l13_l14", },
2075 	{ "l10", 0x4900, "vdd_l8_l9_l10_l11_l12_l13_l14", },
2076 	{ "l11", 0x4a00, "vdd_l8_l9_l10_l11_l12_l13_l14", },
2077 	{ "l12", 0x4b00, "vdd_l8_l9_l10_l11_l12_l13_l14", },
2078 	{ "l13", 0x4c00, "vdd_l8_l9_l10_l11_l12_l13_l14", },
2079 	{ "l14", 0x4d00, "vdd_l8_l9_l10_l11_l12_l13_l14", },
2080 	{ "l15", 0x4e00, "vdd_l15_l16_l17_l18_l19", },
2081 	{ "l16", 0x4f00, "vdd_l15_l16_l17_l18_l19", },
2082 	{ "l17", 0x5000, "vdd_l15_l16_l17_l18_l19", },
2083 	{ "l18", 0x5100, "vdd_l15_l16_l17_l18_l19", },
2084 	{ "l19", 0x5200, "vdd_l15_l16_l17_l18_l19", },
2085 	{ }
2086 };
2087 
2088 static const struct spmi_regulator_data pm660l_regulators[] = {
2089 	{ "s1", 0x1400, "vdd_s1", },
2090 	{ "s2", 0x1700, "vdd_s2", },
2091 	{ "s3", 0x1a00, "vdd_s3", },
2092 	{ "s4", 0x1d00, "vdd_s4", },
2093 	{ "s5", 0x2000, "vdd_s5", },
2094 	{ "l1", 0x4000, "vdd_l1_l9_l10", },
2095 	{ "l2", 0x4100, "vdd_l2", },
2096 	{ "l3", 0x4200, "vdd_l3_l5_l7_l8", },
2097 	{ "l4", 0x4300, "vdd_l4_l6", },
2098 	{ "l5", 0x4400, "vdd_l3_l5_l7_l8", },
2099 	{ "l6", 0x4500, "vdd_l4_l6", },
2100 	{ "l7", 0x4600, "vdd_l3_l5_l7_l8", },
2101 	{ "l8", 0x4700, "vdd_l3_l5_l7_l8", },
2102 	{ "l9", 0x4800, "vdd_l1_l9_l10", },
2103 	{ "l10", 0x4900, "vdd_l1_l9_l10", },
2104 	{ }
2105 };
2106 
2107 static const struct spmi_regulator_data pm8004_regulators[] = {
2108 	{ "s2", 0x1700, "vdd_s2", },
2109 	{ "s5", 0x2000, "vdd_s5", },
2110 	{ }
2111 };
2112 
2113 static const struct spmi_regulator_data pm8005_regulators[] = {
2114 	{ "s1", 0x1400, "vdd_s1", },
2115 	{ "s2", 0x1700, "vdd_s2", },
2116 	{ "s3", 0x1a00, "vdd_s3", },
2117 	{ "s4", 0x1d00, "vdd_s4", },
2118 	{ }
2119 };
2120 
2121 static const struct spmi_regulator_data pm8226_regulators[] = {
2122 	{ "s1", 0x1400, "vdd_s1", },
2123 	{ "s2", 0x1700, "vdd_s2", },
2124 	{ "s3", 0x1a00, "vdd_s3", },
2125 	{ "s4", 0x1d00, "vdd_s4", },
2126 	{ "s5", 0x2000, "vdd_s5", },
2127 	{ "l1", 0x4000, "vdd_l1_l2_l4_l5", },
2128 	{ "l2", 0x4100, "vdd_l1_l2_l4_l5", },
2129 	{ "l3", 0x4200, "vdd_l3_l24_l26", },
2130 	{ "l4", 0x4300, "vdd_l1_l2_l4_l5", },
2131 	{ "l5", 0x4400, "vdd_l1_l2_l4_l5", },
2132 	{ "l6", 0x4500, "vdd_l6_l7_l8_l9_l27", },
2133 	{ "l7", 0x4600, "vdd_l6_l7_l8_l9_l27", },
2134 	{ "l8", 0x4700, "vdd_l6_l7_l8_l9_l27", },
2135 	{ "l9", 0x4800, "vdd_l6_l7_l8_l9_l27", },
2136 	{ "l10", 0x4900, "vdd_l10_l11_l13", },
2137 	{ "l11", 0x4a00, "vdd_l10_l11_l13", },
2138 	{ "l12", 0x4b00, "vdd_l12_l14", },
2139 	{ "l13", 0x4c00, "vdd_l10_l11_l13", },
2140 	{ "l14", 0x4d00, "vdd_l12_l14", },
2141 	{ "l15", 0x4e00, "vdd_l15_l16_l17_l18", },
2142 	{ "l16", 0x4f00, "vdd_l15_l16_l17_l18", },
2143 	{ "l17", 0x5000, "vdd_l15_l16_l17_l18", },
2144 	{ "l18", 0x5100, "vdd_l15_l16_l17_l18", },
2145 	{ "l19", 0x5200, "vdd_l19_l20_l21_l22_l23_l28", },
2146 	{ "l20", 0x5300, "vdd_l19_l20_l21_l22_l23_l28", },
2147 	{ "l21", 0x5400, "vdd_l19_l20_l21_l22_l23_l28", },
2148 	{ "l22", 0x5500, "vdd_l19_l20_l21_l22_l23_l28", },
2149 	{ "l23", 0x5600, "vdd_l19_l20_l21_l22_l23_l28", },
2150 	{ "l24", 0x5700, "vdd_l3_l24_l26", },
2151 	{ "l25", 0x5800, "vdd_l25", },
2152 	{ "l26", 0x5900, "vdd_l3_l24_l26", },
2153 	{ "l27", 0x5a00, "vdd_l6_l7_l8_l9_l27", },
2154 	{ "l28", 0x5b00, "vdd_l19_l20_l21_l22_l23_l28", },
2155 	{ "lvs1", 0x8000, "vdd_lvs1", },
2156 	{ }
2157 };
2158 
2159 static const struct spmi_regulator_data pm8841_regulators[] = {
2160 	{ "s1", 0x1400, "vdd_s1", },
2161 	{ "s2", 0x1700, "vdd_s2", NULL, 0x1c08 },
2162 	{ "s3", 0x1a00, "vdd_s3", },
2163 	{ "s4", 0x1d00, "vdd_s4", NULL, 0x1c08 },
2164 	{ "s5", 0x2000, "vdd_s5", NULL, 0x1c08 },
2165 	{ "s6", 0x2300, "vdd_s6", NULL, 0x1c08 },
2166 	{ "s7", 0x2600, "vdd_s7", NULL, 0x1c08 },
2167 	{ "s8", 0x2900, "vdd_s8", NULL, 0x1c08 },
2168 	{ }
2169 };
2170 
2171 static const struct spmi_regulator_data pm8916_regulators[] = {
2172 	{ "s1", 0x1400, "vdd_s1", },
2173 	{ "s2", 0x1700, "vdd_s2", },
2174 	{ "s3", 0x1a00, "vdd_s3", },
2175 	{ "s4", 0x1d00, "vdd_s4", },
2176 	{ "l1", 0x4000, "vdd_l1_l3", },
2177 	{ "l2", 0x4100, "vdd_l2", },
2178 	{ "l3", 0x4200, "vdd_l1_l3", },
2179 	{ "l4", 0x4300, "vdd_l4_l5_l6", },
2180 	{ "l5", 0x4400, "vdd_l4_l5_l6", },
2181 	{ "l6", 0x4500, "vdd_l4_l5_l6", },
2182 	{ "l7", 0x4600, "vdd_l7", },
2183 	{ "l8", 0x4700, "vdd_l8_l11_l14_l15_l16", },
2184 	{ "l9", 0x4800, "vdd_l9_l10_l12_l13_l17_l18", },
2185 	{ "l10", 0x4900, "vdd_l9_l10_l12_l13_l17_l18", },
2186 	{ "l11", 0x4a00, "vdd_l8_l11_l14_l15_l16", },
2187 	{ "l12", 0x4b00, "vdd_l9_l10_l12_l13_l17_l18", },
2188 	{ "l13", 0x4c00, "vdd_l9_l10_l12_l13_l17_l18", },
2189 	{ "l14", 0x4d00, "vdd_l8_l11_l14_l15_l16", },
2190 	{ "l15", 0x4e00, "vdd_l8_l11_l14_l15_l16", },
2191 	{ "l16", 0x4f00, "vdd_l8_l11_l14_l15_l16", },
2192 	{ "l17", 0x5000, "vdd_l9_l10_l12_l13_l17_l18", },
2193 	{ "l18", 0x5100, "vdd_l9_l10_l12_l13_l17_l18", },
2194 	{ }
2195 };
2196 
2197 static const struct spmi_regulator_data pm8941_regulators[] = {
2198 	{ "s1", 0x1400, "vdd_s1", },
2199 	{ "s2", 0x1700, "vdd_s2", },
2200 	{ "s3", 0x1a00, "vdd_s3", },
2201 	{ "s4", 0xa000, },
2202 	{ "l1", 0x4000, "vdd_l1_l3", },
2203 	{ "l2", 0x4100, "vdd_l2_lvs_1_2_3", },
2204 	{ "l3", 0x4200, "vdd_l1_l3", },
2205 	{ "l4", 0x4300, "vdd_l4_l11", },
2206 	{ "l5", 0x4400, "vdd_l5_l7", NULL, 0x0410 },
2207 	{ "l6", 0x4500, "vdd_l6_l12_l14_l15", },
2208 	{ "l7", 0x4600, "vdd_l5_l7", NULL, 0x0410 },
2209 	{ "l8", 0x4700, "vdd_l8_l16_l18_19", },
2210 	{ "l9", 0x4800, "vdd_l9_l10_l17_l22", },
2211 	{ "l10", 0x4900, "vdd_l9_l10_l17_l22", },
2212 	{ "l11", 0x4a00, "vdd_l4_l11", },
2213 	{ "l12", 0x4b00, "vdd_l6_l12_l14_l15", },
2214 	{ "l13", 0x4c00, "vdd_l13_l20_l23_l24", },
2215 	{ "l14", 0x4d00, "vdd_l6_l12_l14_l15", },
2216 	{ "l15", 0x4e00, "vdd_l6_l12_l14_l15", },
2217 	{ "l16", 0x4f00, "vdd_l8_l16_l18_19", },
2218 	{ "l17", 0x5000, "vdd_l9_l10_l17_l22", },
2219 	{ "l18", 0x5100, "vdd_l8_l16_l18_19", },
2220 	{ "l19", 0x5200, "vdd_l8_l16_l18_19", },
2221 	{ "l20", 0x5300, "vdd_l13_l20_l23_l24", },
2222 	{ "l21", 0x5400, "vdd_l21", },
2223 	{ "l22", 0x5500, "vdd_l9_l10_l17_l22", },
2224 	{ "l23", 0x5600, "vdd_l13_l20_l23_l24", },
2225 	{ "l24", 0x5700, "vdd_l13_l20_l23_l24", },
2226 	{ "lvs1", 0x8000, "vdd_l2_lvs_1_2_3", },
2227 	{ "lvs2", 0x8100, "vdd_l2_lvs_1_2_3", },
2228 	{ "lvs3", 0x8200, "vdd_l2_lvs_1_2_3", },
2229 	{ "5vs1", 0x8300, "vin_5vs", "ocp-5vs1", },
2230 	{ "5vs2", 0x8400, "vin_5vs", "ocp-5vs2", },
2231 	{ }
2232 };
2233 
2234 static const struct spmi_regulator_data pm8950_regulators[] = {
2235 	{ "s1", 0x1400, "vdd_s1", },
2236 	{ "s2", 0x1700, "vdd_s2", },
2237 	{ "s3", 0x1a00, "vdd_s3", },
2238 	{ "s4", 0x1d00, "vdd_s4", },
2239 	{ "s5", 0x2000, "vdd_s5", },
2240 	{ "s6", 0x2300, "vdd_s6", },
2241 	{ "l1", 0x4000, "vdd_l1_l19", },
2242 	{ "l2", 0x4100, "vdd_l2_l23", },
2243 	{ "l3", 0x4200, "vdd_l3", },
2244 	{ "l4", 0x4300, "vdd_l4_l5_l6_l7_l16", },
2245 	{ "l5", 0x4400, "vdd_l4_l5_l6_l7_l16", },
2246 	{ "l6", 0x4500, "vdd_l4_l5_l6_l7_l16", },
2247 	{ "l7", 0x4600, "vdd_l4_l5_l6_l7_l16", },
2248 	{ "l8", 0x4700, "vdd_l8_l11_l12_l17_l22", },
2249 	{ "l9", 0x4800, "vdd_l9_l10_l13_l14_l15_l18", },
2250 	{ "l10", 0x4900, "vdd_l9_l10_l13_l14_l15_l18", },
2251 	{ "l11", 0x4a00, "vdd_l8_l11_l12_l17_l22", },
2252 	{ "l12", 0x4b00, "vdd_l8_l11_l12_l17_l22", },
2253 	{ "l13", 0x4c00, "vdd_l9_l10_l13_l14_l15_l18", },
2254 	{ "l14", 0x4d00, "vdd_l9_l10_l13_l14_l15_l18", },
2255 	{ "l15", 0x4e00, "vdd_l9_l10_l13_l14_l15_l18", },
2256 	{ "l16", 0x4f00, "vdd_l4_l5_l6_l7_l16", },
2257 	{ "l17", 0x5000, "vdd_l8_l11_l12_l17_l22", },
2258 	{ "l18", 0x5100, "vdd_l9_l10_l13_l14_l15_l18", },
2259 	{ "l19", 0x5200, "vdd_l1_l19", },
2260 	{ "l20", 0x5300, "vdd_l20", },
2261 	{ "l21", 0x5400, "vdd_l21", },
2262 	{ "l22", 0x5500, "vdd_l8_l11_l12_l17_l22", },
2263 	{ "l23", 0x5600, "vdd_l2_l23", },
2264 	{ }
2265 };
2266 
2267 static const struct spmi_regulator_data pm8994_regulators[] = {
2268 	{ "s1", 0x1400, "vdd_s1", },
2269 	{ "s2", 0x1700, "vdd_s2", },
2270 	{ "s3", 0x1a00, "vdd_s3", },
2271 	{ "s4", 0x1d00, "vdd_s4", },
2272 	{ "s5", 0x2000, "vdd_s5", },
2273 	{ "s6", 0x2300, "vdd_s6", },
2274 	{ "s7", 0x2600, "vdd_s7", },
2275 	{ "s8", 0x2900, "vdd_s8", },
2276 	{ "s9", 0x2c00, "vdd_s9", },
2277 	{ "s10", 0x2f00, "vdd_s10", },
2278 	{ "s11", 0x3200, "vdd_s11", },
2279 	{ "s12", 0x3500, "vdd_s12", },
2280 	{ "l1", 0x4000, "vdd_l1", },
2281 	{ "l2", 0x4100, "vdd_l2_l26_l28", },
2282 	{ "l3", 0x4200, "vdd_l3_l11", },
2283 	{ "l4", 0x4300, "vdd_l4_l27_l31", },
2284 	{ "l5", 0x4400, "vdd_l5_l7", },
2285 	{ "l6", 0x4500, "vdd_l6_l12_l32", },
2286 	{ "l7", 0x4600, "vdd_l5_l7", },
2287 	{ "l8", 0x4700, "vdd_l8_l16_l30", },
2288 	{ "l9", 0x4800, "vdd_l9_l10_l18_l22", },
2289 	{ "l10", 0x4900, "vdd_l9_l10_l18_l22", },
2290 	{ "l11", 0x4a00, "vdd_l3_l11", },
2291 	{ "l12", 0x4b00, "vdd_l6_l12_l32", },
2292 	{ "l13", 0x4c00, "vdd_l13_l19_l23_l24", },
2293 	{ "l14", 0x4d00, "vdd_l14_l15", },
2294 	{ "l15", 0x4e00, "vdd_l14_l15", },
2295 	{ "l16", 0x4f00, "vdd_l8_l16_l30", },
2296 	{ "l17", 0x5000, "vdd_l17_l29", },
2297 	{ "l18", 0x5100, "vdd_l9_l10_l18_l22", },
2298 	{ "l19", 0x5200, "vdd_l13_l19_l23_l24", },
2299 	{ "l20", 0x5300, "vdd_l20_l21", },
2300 	{ "l21", 0x5400, "vdd_l20_l21", },
2301 	{ "l22", 0x5500, "vdd_l9_l10_l18_l22", },
2302 	{ "l23", 0x5600, "vdd_l13_l19_l23_l24", },
2303 	{ "l24", 0x5700, "vdd_l13_l19_l23_l24", },
2304 	{ "l25", 0x5800, "vdd_l25", },
2305 	{ "l26", 0x5900, "vdd_l2_l26_l28", },
2306 	{ "l27", 0x5a00, "vdd_l4_l27_l31", },
2307 	{ "l28", 0x5b00, "vdd_l2_l26_l28", },
2308 	{ "l29", 0x5c00, "vdd_l17_l29", },
2309 	{ "l30", 0x5d00, "vdd_l8_l16_l30", },
2310 	{ "l31", 0x5e00, "vdd_l4_l27_l31", },
2311 	{ "l32", 0x5f00, "vdd_l6_l12_l32", },
2312 	{ "lvs1", 0x8000, "vdd_lvs_1_2", },
2313 	{ "lvs2", 0x8100, "vdd_lvs_1_2", },
2314 	{ }
2315 };
2316 
2317 static const struct spmi_regulator_data pmi8994_regulators[] = {
2318 	{ "s1", 0x1400, "vdd_s1", },
2319 	{ "s2", 0x1700, "vdd_s2", },
2320 	{ "s3", 0x1a00, "vdd_s3", },
2321 	{ "l1", 0x4000, "vdd_l1", },
2322 	{ }
2323 };
2324 
2325 static const struct spmi_regulator_data pmp8074_regulators[] = {
2326 	{ "s1", 0x1400, "vdd_s1"},
2327 	{ "s2", 0x1700, "vdd_s2"},
2328 	{ "s3", 0x1a00, "vdd_s3"},
2329 	{ "s4", 0x1d00, "vdd_s4"},
2330 	{ "s5", 0x2000, "vdd_s5"},
2331 	{ "l1", 0x4000, "vdd_l1_l2"},
2332 	{ "l2", 0x4100, "vdd_l1_l2"},
2333 	{ "l3", 0x4200, "vdd_l3_l8"},
2334 	{ "l4", 0x4300, "vdd_l4"},
2335 	{ "l5", 0x4400, "vdd_l5_l6_l15"},
2336 	{ "l6", 0x4500, "vdd_l5_l6_l15"},
2337 	{ "l7", 0x4600, "vdd_l7"},
2338 	{ "l8", 0x4700, "vdd_l3_l8"},
2339 	{ "l9", 0x4800, "vdd_l9"},
2340 	/* l10 is currently unsupported HT_P50 */
2341 	{ "l11", 0x4a00, "vdd_l10_l11_l12_l13"},
2342 	{ "l12", 0x4b00, "vdd_l10_l11_l12_l13"},
2343 	{ "l13", 0x4c00, "vdd_l10_l11_l12_l13"},
2344 	{ }
2345 };
2346 
2347 static const struct spmi_regulator_data pms405_regulators[] = {
2348 	{ "s3", 0x1a00, "vdd_s3"},
2349 	{ }
2350 };
2351 
2352 static const struct of_device_id qcom_spmi_regulator_match[] = {
2353 	{ .compatible = "qcom,pm6125-regulators", .data = &pm6125_regulators },
2354 	{ .compatible = "qcom,pm660-regulators", .data = &pm660_regulators },
2355 	{ .compatible = "qcom,pm660l-regulators", .data = &pm660l_regulators },
2356 	{ .compatible = "qcom,pm8004-regulators", .data = &pm8004_regulators },
2357 	{ .compatible = "qcom,pm8005-regulators", .data = &pm8005_regulators },
2358 	{ .compatible = "qcom,pm8226-regulators", .data = &pm8226_regulators },
2359 	{ .compatible = "qcom,pm8841-regulators", .data = &pm8841_regulators },
2360 	{ .compatible = "qcom,pm8916-regulators", .data = &pm8916_regulators },
2361 	{ .compatible = "qcom,pm8941-regulators", .data = &pm8941_regulators },
2362 	{ .compatible = "qcom,pm8950-regulators", .data = &pm8950_regulators },
2363 	{ .compatible = "qcom,pm8994-regulators", .data = &pm8994_regulators },
2364 	{ .compatible = "qcom,pmi8994-regulators", .data = &pmi8994_regulators },
2365 	{ .compatible = "qcom,pmp8074-regulators", .data = &pmp8074_regulators },
2366 	{ .compatible = "qcom,pms405-regulators", .data = &pms405_regulators },
2367 	{ }
2368 };
2369 MODULE_DEVICE_TABLE(of, qcom_spmi_regulator_match);
2370 
qcom_spmi_regulator_probe(struct platform_device * pdev)2371 static int qcom_spmi_regulator_probe(struct platform_device *pdev)
2372 {
2373 	const struct spmi_regulator_data *reg;
2374 	const struct spmi_voltage_range *range;
2375 	const struct of_device_id *match;
2376 	struct regulator_config config = { };
2377 	struct regulator_dev *rdev;
2378 	struct spmi_regulator *vreg;
2379 	struct regmap *regmap;
2380 	const char *name;
2381 	struct device *dev = &pdev->dev;
2382 	struct device_node *node = pdev->dev.of_node;
2383 	struct device_node *syscon, *reg_node;
2384 	struct property *reg_prop;
2385 	int ret, lenp;
2386 	struct list_head *vreg_list;
2387 
2388 	vreg_list = devm_kzalloc(dev, sizeof(*vreg_list), GFP_KERNEL);
2389 	if (!vreg_list)
2390 		return -ENOMEM;
2391 	INIT_LIST_HEAD(vreg_list);
2392 	platform_set_drvdata(pdev, vreg_list);
2393 
2394 	regmap = dev_get_regmap(dev->parent, NULL);
2395 	if (!regmap)
2396 		return -ENODEV;
2397 
2398 	match = of_match_device(qcom_spmi_regulator_match, &pdev->dev);
2399 	if (!match)
2400 		return -ENODEV;
2401 
2402 	if (of_find_property(node, "qcom,saw-reg", &lenp)) {
2403 		syscon = of_parse_phandle(node, "qcom,saw-reg", 0);
2404 		saw_regmap = syscon_node_to_regmap(syscon);
2405 		of_node_put(syscon);
2406 		if (IS_ERR(saw_regmap))
2407 			dev_err(dev, "ERROR reading SAW regmap\n");
2408 	}
2409 
2410 	for (reg = match->data; reg->name; reg++) {
2411 
2412 		if (saw_regmap) {
2413 			reg_node = of_get_child_by_name(node, reg->name);
2414 			reg_prop = of_find_property(reg_node, "qcom,saw-slave",
2415 						    &lenp);
2416 			of_node_put(reg_node);
2417 			if (reg_prop)
2418 				continue;
2419 		}
2420 
2421 		vreg = devm_kzalloc(dev, sizeof(*vreg), GFP_KERNEL);
2422 		if (!vreg)
2423 			return -ENOMEM;
2424 
2425 		vreg->dev = dev;
2426 		vreg->base = reg->base;
2427 		vreg->regmap = regmap;
2428 		if (reg->ocp) {
2429 			vreg->ocp_irq = platform_get_irq_byname(pdev, reg->ocp);
2430 			if (vreg->ocp_irq < 0)
2431 				return vreg->ocp_irq;
2432 		}
2433 		vreg->desc.id = -1;
2434 		vreg->desc.owner = THIS_MODULE;
2435 		vreg->desc.type = REGULATOR_VOLTAGE;
2436 		vreg->desc.enable_reg = reg->base + SPMI_COMMON_REG_ENABLE;
2437 		vreg->desc.enable_mask = SPMI_COMMON_ENABLE_MASK;
2438 		vreg->desc.enable_val = SPMI_COMMON_ENABLE;
2439 		vreg->desc.name = name = reg->name;
2440 		vreg->desc.supply_name = reg->supply;
2441 		vreg->desc.of_match = reg->name;
2442 		vreg->desc.of_parse_cb = spmi_regulator_of_parse;
2443 		vreg->desc.of_map_mode = spmi_regulator_of_map_mode;
2444 
2445 		ret = spmi_regulator_match(vreg, reg->force_type);
2446 		if (ret)
2447 			continue;
2448 
2449 		if (saw_regmap) {
2450 			reg_node = of_get_child_by_name(node, reg->name);
2451 			reg_prop = of_find_property(reg_node, "qcom,saw-leader",
2452 						    &lenp);
2453 			of_node_put(reg_node);
2454 			if (reg_prop) {
2455 				spmi_saw_ops = *(vreg->desc.ops);
2456 				spmi_saw_ops.set_voltage_sel =
2457 					spmi_regulator_saw_set_voltage;
2458 				vreg->desc.ops = &spmi_saw_ops;
2459 			}
2460 		}
2461 
2462 		if (vreg->set_points && vreg->set_points->count == 1) {
2463 			/* since there is only one range */
2464 			range = vreg->set_points->range;
2465 			vreg->desc.uV_step = range->step_uV;
2466 		}
2467 
2468 		config.dev = dev;
2469 		config.driver_data = vreg;
2470 		config.regmap = regmap;
2471 		rdev = devm_regulator_register(dev, &vreg->desc, &config);
2472 		if (IS_ERR(rdev)) {
2473 			dev_err(dev, "failed to register %s\n", name);
2474 			return PTR_ERR(rdev);
2475 		}
2476 
2477 		INIT_LIST_HEAD(&vreg->node);
2478 		list_add(&vreg->node, vreg_list);
2479 	}
2480 
2481 	return 0;
2482 }
2483 
2484 static struct platform_driver qcom_spmi_regulator_driver = {
2485 	.driver		= {
2486 		.name	= "qcom-spmi-regulator",
2487 		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
2488 		.of_match_table = qcom_spmi_regulator_match,
2489 	},
2490 	.probe		= qcom_spmi_regulator_probe,
2491 };
2492 module_platform_driver(qcom_spmi_regulator_driver);
2493 
2494 MODULE_DESCRIPTION("Qualcomm SPMI PMIC regulator driver");
2495 MODULE_LICENSE("GPL v2");
2496 MODULE_ALIAS("platform:qcom-spmi-regulator");
2497