2 * Driver for Regulator part of Palmas PMIC Chips
4 * Copyright 2011-2013 Texas Instruments Inc.
6 * Author: Graeme Gregory <gg@slimlogic.co.uk>
7 * Author: Ian Lartey <ian@slimlogic.co.uk>
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
16 #include <linux/kernel.h>
17 #include <linux/module.h>
18 #include <linux/init.h>
19 #include <linux/err.h>
20 #include <linux/platform_device.h>
21 #include <linux/regulator/driver.h>
22 #include <linux/regulator/machine.h>
23 #include <linux/slab.h>
24 #include <linux/regmap.h>
25 #include <linux/mfd/palmas.h>
27 #include <linux/of_platform.h>
28 #include <linux/regulator/of_regulator.h>
39 static const struct regulator_linear_range smps_low_ranges[] = {
40 REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
41 REGULATOR_LINEAR_RANGE(500000, 0x1, 0x6, 0),
42 REGULATOR_LINEAR_RANGE(510000, 0x7, 0x79, 10000),
43 REGULATOR_LINEAR_RANGE(1650000, 0x7A, 0x7f, 0),
46 static const struct regulator_linear_range smps_high_ranges[] = {
47 REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
48 REGULATOR_LINEAR_RANGE(1000000, 0x1, 0x6, 0),
49 REGULATOR_LINEAR_RANGE(1020000, 0x7, 0x79, 20000),
50 REGULATOR_LINEAR_RANGE(3300000, 0x7A, 0x7f, 0),
53 static const struct regs_info palmas_regs_info[] = {
57 .vsel_addr = PALMAS_SMPS12_VOLTAGE,
58 .ctrl_addr = PALMAS_SMPS12_CTRL,
59 .tstep_addr = PALMAS_SMPS12_TSTEP,
60 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
65 .vsel_addr = PALMAS_SMPS12_VOLTAGE,
66 .ctrl_addr = PALMAS_SMPS12_CTRL,
67 .tstep_addr = PALMAS_SMPS12_TSTEP,
68 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS12,
73 .vsel_addr = PALMAS_SMPS3_VOLTAGE,
74 .ctrl_addr = PALMAS_SMPS3_CTRL,
75 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS3,
80 .vsel_addr = PALMAS_SMPS45_VOLTAGE,
81 .ctrl_addr = PALMAS_SMPS45_CTRL,
82 .tstep_addr = PALMAS_SMPS45_TSTEP,
83 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
88 .vsel_addr = PALMAS_SMPS45_VOLTAGE,
89 .ctrl_addr = PALMAS_SMPS45_CTRL,
90 .tstep_addr = PALMAS_SMPS45_TSTEP,
91 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS45,
96 .vsel_addr = PALMAS_SMPS6_VOLTAGE,
97 .ctrl_addr = PALMAS_SMPS6_CTRL,
98 .tstep_addr = PALMAS_SMPS6_TSTEP,
99 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS6,
104 .vsel_addr = PALMAS_SMPS7_VOLTAGE,
105 .ctrl_addr = PALMAS_SMPS7_CTRL,
106 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS7,
111 .vsel_addr = PALMAS_SMPS8_VOLTAGE,
112 .ctrl_addr = PALMAS_SMPS8_CTRL,
113 .tstep_addr = PALMAS_SMPS8_TSTEP,
114 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS8,
119 .vsel_addr = PALMAS_SMPS9_VOLTAGE,
120 .ctrl_addr = PALMAS_SMPS9_CTRL,
121 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS9,
124 .name = "SMPS10_OUT2",
125 .sname = "smps10-in",
126 .ctrl_addr = PALMAS_SMPS10_CTRL,
127 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
130 .name = "SMPS10_OUT1",
131 .sname = "smps10-out2",
132 .ctrl_addr = PALMAS_SMPS10_CTRL,
133 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SMPS10,
138 .vsel_addr = PALMAS_LDO1_VOLTAGE,
139 .ctrl_addr = PALMAS_LDO1_CTRL,
140 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO1,
145 .vsel_addr = PALMAS_LDO2_VOLTAGE,
146 .ctrl_addr = PALMAS_LDO2_CTRL,
147 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO2,
152 .vsel_addr = PALMAS_LDO3_VOLTAGE,
153 .ctrl_addr = PALMAS_LDO3_CTRL,
154 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO3,
159 .vsel_addr = PALMAS_LDO4_VOLTAGE,
160 .ctrl_addr = PALMAS_LDO4_CTRL,
161 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO4,
166 .vsel_addr = PALMAS_LDO5_VOLTAGE,
167 .ctrl_addr = PALMAS_LDO5_CTRL,
168 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO5,
173 .vsel_addr = PALMAS_LDO6_VOLTAGE,
174 .ctrl_addr = PALMAS_LDO6_CTRL,
175 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO6,
180 .vsel_addr = PALMAS_LDO7_VOLTAGE,
181 .ctrl_addr = PALMAS_LDO7_CTRL,
182 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO7,
187 .vsel_addr = PALMAS_LDO8_VOLTAGE,
188 .ctrl_addr = PALMAS_LDO8_CTRL,
189 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO8,
194 .vsel_addr = PALMAS_LDO9_VOLTAGE,
195 .ctrl_addr = PALMAS_LDO9_CTRL,
196 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDO9,
201 .vsel_addr = PALMAS_LDOLN_VOLTAGE,
202 .ctrl_addr = PALMAS_LDOLN_CTRL,
203 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDOLN,
207 .sname = "ldousb-in",
208 .vsel_addr = PALMAS_LDOUSB_VOLTAGE,
209 .ctrl_addr = PALMAS_LDOUSB_CTRL,
210 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_LDOUSB,
214 .ctrl_addr = PALMAS_REGEN1_CTRL,
215 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN1,
219 .ctrl_addr = PALMAS_REGEN2_CTRL,
220 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN2,
224 .ctrl_addr = PALMAS_REGEN3_CTRL,
225 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_REGEN3,
229 .ctrl_addr = PALMAS_SYSEN1_CTRL,
230 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SYSEN1,
234 .ctrl_addr = PALMAS_SYSEN2_CTRL,
235 .sleep_id = PALMAS_EXTERNAL_REQSTR_ID_SYSEN2,
239 static unsigned int palmas_smps_ramp_delay[4] = {0, 10000, 5000, 2500};
241 #define SMPS_CTRL_MODE_OFF 0x00
242 #define SMPS_CTRL_MODE_ON 0x01
243 #define SMPS_CTRL_MODE_ECO 0x02
244 #define SMPS_CTRL_MODE_PWM 0x03
246 #define PALMAS_SMPS_NUM_VOLTAGES 122
247 #define PALMAS_SMPS10_NUM_VOLTAGES 2
248 #define PALMAS_LDO_NUM_VOLTAGES 50
250 #define SMPS10_VSEL (1<<3)
251 #define SMPS10_BOOST_EN (1<<2)
252 #define SMPS10_BYPASS_EN (1<<1)
253 #define SMPS10_SWITCH_EN (1<<0)
255 #define REGULATOR_SLAVE 0
257 static int palmas_smps_read(struct palmas *palmas, unsigned int reg,
262 addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
264 return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
267 static int palmas_smps_write(struct palmas *palmas, unsigned int reg,
272 addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
274 return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
277 static int palmas_ldo_read(struct palmas *palmas, unsigned int reg,
282 addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
284 return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
287 static int palmas_ldo_write(struct palmas *palmas, unsigned int reg,
292 addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
294 return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
297 static int palmas_set_mode_smps(struct regulator_dev *dev, unsigned int mode)
299 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
300 int id = rdev_get_id(dev);
302 bool rail_enable = true;
304 palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®);
305 reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
307 if (reg == SMPS_CTRL_MODE_OFF)
311 case REGULATOR_MODE_NORMAL:
312 reg |= SMPS_CTRL_MODE_ON;
314 case REGULATOR_MODE_IDLE:
315 reg |= SMPS_CTRL_MODE_ECO;
317 case REGULATOR_MODE_FAST:
318 reg |= SMPS_CTRL_MODE_PWM;
324 pmic->current_reg_mode[id] = reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
326 palmas_smps_write(pmic->palmas,
327 palmas_regs_info[id].ctrl_addr, reg);
331 static unsigned int palmas_get_mode_smps(struct regulator_dev *dev)
333 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
334 int id = rdev_get_id(dev);
337 reg = pmic->current_reg_mode[id] & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
340 case SMPS_CTRL_MODE_ON:
341 return REGULATOR_MODE_NORMAL;
342 case SMPS_CTRL_MODE_ECO:
343 return REGULATOR_MODE_IDLE;
344 case SMPS_CTRL_MODE_PWM:
345 return REGULATOR_MODE_FAST;
351 static int palmas_smps_set_ramp_delay(struct regulator_dev *rdev,
354 struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
355 int id = rdev_get_id(rdev);
356 unsigned int reg = 0;
357 unsigned int addr = palmas_regs_info[id].tstep_addr;
360 /* SMPS3 and SMPS7 do not have tstep_addr setting */
362 case PALMAS_REG_SMPS3:
363 case PALMAS_REG_SMPS7:
369 else if (ramp_delay <= 2500)
371 else if (ramp_delay <= 5000)
376 ret = palmas_smps_write(pmic->palmas, addr, reg);
378 dev_err(pmic->palmas->dev, "TSTEP write failed: %d\n", ret);
382 pmic->ramp_delay[id] = palmas_smps_ramp_delay[reg];
386 static struct regulator_ops palmas_ops_smps = {
387 .is_enabled = regulator_is_enabled_regmap,
388 .enable = regulator_enable_regmap,
389 .disable = regulator_disable_regmap,
390 .set_mode = palmas_set_mode_smps,
391 .get_mode = palmas_get_mode_smps,
392 .get_voltage_sel = regulator_get_voltage_sel_regmap,
393 .set_voltage_sel = regulator_set_voltage_sel_regmap,
394 .list_voltage = regulator_list_voltage_linear_range,
395 .map_voltage = regulator_map_voltage_linear_range,
396 .set_voltage_time_sel = regulator_set_voltage_time_sel,
397 .set_ramp_delay = palmas_smps_set_ramp_delay,
400 static struct regulator_ops palmas_ops_ext_control_smps = {
401 .set_mode = palmas_set_mode_smps,
402 .get_mode = palmas_get_mode_smps,
403 .get_voltage_sel = regulator_get_voltage_sel_regmap,
404 .set_voltage_sel = regulator_set_voltage_sel_regmap,
405 .list_voltage = regulator_list_voltage_linear_range,
406 .map_voltage = regulator_map_voltage_linear_range,
407 .set_voltage_time_sel = regulator_set_voltage_time_sel,
408 .set_ramp_delay = palmas_smps_set_ramp_delay,
411 static struct regulator_ops palmas_ops_smps10 = {
412 .is_enabled = regulator_is_enabled_regmap,
413 .enable = regulator_enable_regmap,
414 .disable = regulator_disable_regmap,
415 .get_voltage_sel = regulator_get_voltage_sel_regmap,
416 .set_voltage_sel = regulator_set_voltage_sel_regmap,
417 .list_voltage = regulator_list_voltage_linear,
418 .map_voltage = regulator_map_voltage_linear,
419 .set_bypass = regulator_set_bypass_regmap,
420 .get_bypass = regulator_get_bypass_regmap,
423 static int palmas_is_enabled_ldo(struct regulator_dev *dev)
425 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
426 int id = rdev_get_id(dev);
429 palmas_ldo_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®);
431 reg &= PALMAS_LDO1_CTRL_STATUS;
436 static struct regulator_ops palmas_ops_ldo = {
437 .is_enabled = palmas_is_enabled_ldo,
438 .enable = regulator_enable_regmap,
439 .disable = regulator_disable_regmap,
440 .get_voltage_sel = regulator_get_voltage_sel_regmap,
441 .set_voltage_sel = regulator_set_voltage_sel_regmap,
442 .list_voltage = regulator_list_voltage_linear,
443 .map_voltage = regulator_map_voltage_linear,
446 static struct regulator_ops palmas_ops_ext_control_ldo = {
447 .get_voltage_sel = regulator_get_voltage_sel_regmap,
448 .set_voltage_sel = regulator_set_voltage_sel_regmap,
449 .list_voltage = regulator_list_voltage_linear,
450 .map_voltage = regulator_map_voltage_linear,
453 static struct regulator_ops palmas_ops_extreg = {
454 .is_enabled = regulator_is_enabled_regmap,
455 .enable = regulator_enable_regmap,
456 .disable = regulator_disable_regmap,
459 static struct regulator_ops palmas_ops_ext_control_extreg = {
462 static int palmas_regulator_config_external(struct palmas *palmas, int id,
463 struct palmas_reg_init *reg_init)
465 int sleep_id = palmas_regs_info[id].sleep_id;
468 ret = palmas_ext_control_req_config(palmas, sleep_id,
469 reg_init->roof_floor, true);
472 "Ext control config for regulator %d failed %d\n",
478 * setup the hardware based sleep configuration of the SMPS/LDO regulators
479 * from the platform data. This is different to the software based control
480 * supported by the regulator framework as it is controlled by toggling
481 * pins on the PMIC such as PREQ, SYSEN, ...
483 static int palmas_smps_init(struct palmas *palmas, int id,
484 struct palmas_reg_init *reg_init)
490 addr = palmas_regs_info[id].ctrl_addr;
492 ret = palmas_smps_read(palmas, addr, ®);
497 case PALMAS_REG_SMPS10_OUT1:
498 case PALMAS_REG_SMPS10_OUT2:
499 reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
500 if (reg_init->mode_sleep)
501 reg |= reg_init->mode_sleep <<
502 PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
505 if (reg_init->warm_reset)
506 reg |= PALMAS_SMPS12_CTRL_WR_S;
508 reg &= ~PALMAS_SMPS12_CTRL_WR_S;
510 if (reg_init->roof_floor)
511 reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
513 reg &= ~PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
515 reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK;
516 if (reg_init->mode_sleep)
517 reg |= reg_init->mode_sleep <<
518 PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT;
521 ret = palmas_smps_write(palmas, addr, reg);
525 if (palmas_regs_info[id].vsel_addr && reg_init->vsel) {
526 addr = palmas_regs_info[id].vsel_addr;
528 reg = reg_init->vsel;
530 ret = palmas_smps_write(palmas, addr, reg);
535 if (reg_init->roof_floor && (id != PALMAS_REG_SMPS10_OUT1) &&
536 (id != PALMAS_REG_SMPS10_OUT2)) {
537 /* Enable externally controlled regulator */
538 addr = palmas_regs_info[id].ctrl_addr;
539 ret = palmas_smps_read(palmas, addr, ®);
543 if (!(reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK)) {
544 reg |= SMPS_CTRL_MODE_ON;
545 ret = palmas_smps_write(palmas, addr, reg);
549 return palmas_regulator_config_external(palmas, id, reg_init);
554 static int palmas_ldo_init(struct palmas *palmas, int id,
555 struct palmas_reg_init *reg_init)
561 addr = palmas_regs_info[id].ctrl_addr;
563 ret = palmas_ldo_read(palmas, addr, ®);
567 if (reg_init->warm_reset)
568 reg |= PALMAS_LDO1_CTRL_WR_S;
570 reg &= ~PALMAS_LDO1_CTRL_WR_S;
572 if (reg_init->mode_sleep)
573 reg |= PALMAS_LDO1_CTRL_MODE_SLEEP;
575 reg &= ~PALMAS_LDO1_CTRL_MODE_SLEEP;
577 ret = palmas_ldo_write(palmas, addr, reg);
581 if (reg_init->roof_floor) {
582 /* Enable externally controlled regulator */
583 addr = palmas_regs_info[id].ctrl_addr;
584 ret = palmas_update_bits(palmas, PALMAS_LDO_BASE,
585 addr, PALMAS_LDO1_CTRL_MODE_ACTIVE,
586 PALMAS_LDO1_CTRL_MODE_ACTIVE);
589 "LDO Register 0x%02x update failed %d\n",
593 return palmas_regulator_config_external(palmas, id, reg_init);
598 static int palmas_extreg_init(struct palmas *palmas, int id,
599 struct palmas_reg_init *reg_init)
603 unsigned int val = 0;
605 addr = palmas_regs_info[id].ctrl_addr;
607 if (reg_init->mode_sleep)
608 val = PALMAS_REGEN1_CTRL_MODE_SLEEP;
610 ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
611 addr, PALMAS_REGEN1_CTRL_MODE_SLEEP, val);
613 dev_err(palmas->dev, "Resource reg 0x%02x update failed %d\n",
618 if (reg_init->roof_floor) {
619 /* Enable externally controlled regulator */
620 addr = palmas_regs_info[id].ctrl_addr;
621 ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
622 addr, PALMAS_REGEN1_CTRL_MODE_ACTIVE,
623 PALMAS_REGEN1_CTRL_MODE_ACTIVE);
626 "Resource Register 0x%02x update failed %d\n",
630 return palmas_regulator_config_external(palmas, id, reg_init);
635 static void palmas_enable_ldo8_track(struct palmas *palmas)
641 addr = palmas_regs_info[PALMAS_REG_LDO8].ctrl_addr;
643 ret = palmas_ldo_read(palmas, addr, ®);
645 dev_err(palmas->dev, "Error in reading ldo8 control reg\n");
649 reg |= PALMAS_LDO8_CTRL_LDO_TRACKING_EN;
650 ret = palmas_ldo_write(palmas, addr, reg);
652 dev_err(palmas->dev, "Error in enabling tracking mode\n");
656 * When SMPS45 is set to off and LDO8 tracking is enabled, the LDO8
657 * output is defined by the LDO8_VOLTAGE.VSEL register divided by two,
658 * and can be set from 0.45 to 1.65 V.
660 addr = palmas_regs_info[PALMAS_REG_LDO8].vsel_addr;
661 ret = palmas_ldo_read(palmas, addr, ®);
663 dev_err(palmas->dev, "Error in reading ldo8 voltage reg\n");
667 reg = (reg << 1) & PALMAS_LDO8_VOLTAGE_VSEL_MASK;
668 ret = palmas_ldo_write(palmas, addr, reg);
670 dev_err(palmas->dev, "Error in setting ldo8 voltage reg\n");
675 static struct of_regulator_match palmas_matches[] = {
676 { .name = "smps12", },
677 { .name = "smps123", },
678 { .name = "smps3", },
679 { .name = "smps45", },
680 { .name = "smps457", },
681 { .name = "smps6", },
682 { .name = "smps7", },
683 { .name = "smps8", },
684 { .name = "smps9", },
685 { .name = "smps10_out2", },
686 { .name = "smps10_out1", },
696 { .name = "ldoln", },
697 { .name = "ldousb", },
698 { .name = "regen1", },
699 { .name = "regen2", },
700 { .name = "regen3", },
701 { .name = "sysen1", },
702 { .name = "sysen2", },
705 static void palmas_dt_to_pdata(struct device *dev,
706 struct device_node *node,
707 struct palmas_pmic_platform_data *pdata)
709 struct device_node *regulators;
713 node = of_node_get(node);
714 regulators = of_get_child_by_name(node, "regulators");
716 dev_info(dev, "regulator node not found\n");
720 ret = of_regulator_match(dev, regulators, palmas_matches,
722 of_node_put(regulators);
724 dev_err(dev, "Error parsing regulator init data: %d\n", ret);
728 for (idx = 0; idx < PALMAS_NUM_REGS; idx++) {
729 if (!palmas_matches[idx].init_data ||
730 !palmas_matches[idx].of_node)
733 pdata->reg_data[idx] = palmas_matches[idx].init_data;
735 pdata->reg_init[idx] = devm_kzalloc(dev,
736 sizeof(struct palmas_reg_init), GFP_KERNEL);
738 pdata->reg_init[idx]->warm_reset =
739 of_property_read_bool(palmas_matches[idx].of_node,
742 ret = of_property_read_u32(palmas_matches[idx].of_node,
743 "ti,roof-floor", &prop);
744 /* EINVAL: Property not found */
745 if (ret != -EINVAL) {
748 /* use default value, when no value is specified */
749 econtrol = PALMAS_EXT_CONTROL_NSLEEP;
753 econtrol = PALMAS_EXT_CONTROL_ENABLE1;
756 econtrol = PALMAS_EXT_CONTROL_ENABLE2;
759 econtrol = PALMAS_EXT_CONTROL_NSLEEP;
764 "%s: Invalid roof-floor option: %u\n",
765 palmas_matches[idx].name, prop);
769 pdata->reg_init[idx]->roof_floor = econtrol;
772 ret = of_property_read_u32(palmas_matches[idx].of_node,
773 "ti,mode-sleep", &prop);
775 pdata->reg_init[idx]->mode_sleep = prop;
777 ret = of_property_read_bool(palmas_matches[idx].of_node,
780 pdata->reg_init[idx]->vsel =
781 PALMAS_SMPS12_VOLTAGE_RANGE;
783 if (idx == PALMAS_REG_LDO8)
784 pdata->enable_ldo8_tracking = of_property_read_bool(
785 palmas_matches[idx].of_node,
786 "ti,enable-ldo8-tracking");
789 pdata->ldo6_vibrator = of_property_read_bool(node, "ti,ldo6-vibrator");
793 static int palmas_regulators_probe(struct platform_device *pdev)
795 struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
796 struct palmas_pmic_platform_data *pdata = dev_get_platdata(&pdev->dev);
797 struct device_node *node = pdev->dev.of_node;
798 struct regulator_dev *rdev;
799 struct regulator_config config = { };
800 struct palmas_pmic *pmic;
801 struct palmas_reg_init *reg_init;
803 unsigned int addr, reg;
805 if (node && !pdata) {
806 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
811 palmas_dt_to_pdata(&pdev->dev, node, pdata);
814 pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
818 pmic->dev = &pdev->dev;
819 pmic->palmas = palmas;
821 platform_set_drvdata(pdev, pmic);
823 ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, ®);
827 if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN)
830 if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN)
833 config.regmap = palmas->regmap[REGULATOR_SLAVE];
834 config.dev = &pdev->dev;
835 config.driver_data = pmic;
837 for (id = 0; id < PALMAS_REG_LDO1; id++) {
838 bool ramp_delay_support = false;
841 * Miss out regulators which are not available due
842 * to slaving configurations.
845 case PALMAS_REG_SMPS12:
846 case PALMAS_REG_SMPS3:
849 if (id == PALMAS_REG_SMPS12)
850 ramp_delay_support = true;
852 case PALMAS_REG_SMPS123:
855 ramp_delay_support = true;
857 case PALMAS_REG_SMPS45:
858 case PALMAS_REG_SMPS7:
861 if (id == PALMAS_REG_SMPS45)
862 ramp_delay_support = true;
864 case PALMAS_REG_SMPS457:
867 ramp_delay_support = true;
869 case PALMAS_REG_SMPS10_OUT1:
870 case PALMAS_REG_SMPS10_OUT2:
871 if (!PALMAS_PMIC_HAS(palmas, SMPS10_BOOST))
875 if ((id == PALMAS_REG_SMPS6) || (id == PALMAS_REG_SMPS8))
876 ramp_delay_support = true;
878 if (ramp_delay_support) {
879 addr = palmas_regs_info[id].tstep_addr;
880 ret = palmas_smps_read(pmic->palmas, addr, ®);
883 "reading TSTEP reg failed: %d\n", ret);
886 pmic->desc[id].ramp_delay =
887 palmas_smps_ramp_delay[reg & 0x3];
888 pmic->ramp_delay[id] = pmic->desc[id].ramp_delay;
891 /* Initialise sleep/init values from platform data */
892 if (pdata && pdata->reg_init[id]) {
893 reg_init = pdata->reg_init[id];
894 ret = palmas_smps_init(palmas, id, reg_init);
901 /* Register the regulators */
902 pmic->desc[id].name = palmas_regs_info[id].name;
903 pmic->desc[id].id = id;
906 case PALMAS_REG_SMPS10_OUT1:
907 case PALMAS_REG_SMPS10_OUT2:
908 pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
909 pmic->desc[id].ops = &palmas_ops_smps10;
910 pmic->desc[id].vsel_reg =
911 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
913 pmic->desc[id].vsel_mask = SMPS10_VSEL;
914 pmic->desc[id].enable_reg =
915 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
917 if (id == PALMAS_REG_SMPS10_OUT1)
918 pmic->desc[id].enable_mask = SMPS10_SWITCH_EN;
920 pmic->desc[id].enable_mask = SMPS10_BOOST_EN;
921 pmic->desc[id].bypass_reg =
922 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
924 pmic->desc[id].bypass_mask = SMPS10_BYPASS_EN;
925 pmic->desc[id].min_uV = 3750000;
926 pmic->desc[id].uV_step = 1250000;
930 * Read and store the RANGE bit for later use
931 * This must be done before regulator is probed,
932 * otherwise we error in probe with unsupportable
933 * ranges. Read the current smps mode for later use.
935 addr = palmas_regs_info[id].vsel_addr;
936 pmic->desc[id].n_linear_ranges = 3;
938 ret = palmas_smps_read(pmic->palmas, addr, ®);
941 if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
944 pmic->desc[id].linear_ranges = smps_high_ranges;
946 pmic->desc[id].linear_ranges = smps_low_ranges;
948 if (reg_init && reg_init->roof_floor)
950 &palmas_ops_ext_control_smps;
952 pmic->desc[id].ops = &palmas_ops_smps;
953 pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
954 pmic->desc[id].vsel_reg =
955 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
956 palmas_regs_info[id].vsel_addr);
957 pmic->desc[id].vsel_mask =
958 PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
960 /* Read the smps mode for later use. */
961 addr = palmas_regs_info[id].ctrl_addr;
962 ret = palmas_smps_read(pmic->palmas, addr, ®);
965 pmic->current_reg_mode[id] = reg &
966 PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
969 pmic->desc[id].type = REGULATOR_VOLTAGE;
970 pmic->desc[id].owner = THIS_MODULE;
973 config.init_data = pdata->reg_data[id];
975 config.init_data = NULL;
977 pmic->desc[id].supply_name = palmas_regs_info[id].sname;
978 config.of_node = palmas_matches[id].of_node;
980 rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id],
984 "failed to register %s regulator\n",
986 return PTR_ERR(rdev);
989 /* Save regulator for cleanup */
990 pmic->rdev[id] = rdev;
993 /* Start this loop from the id left from previous loop */
994 for (; id < PALMAS_NUM_REGS; id++) {
995 if (pdata && pdata->reg_init[id])
996 reg_init = pdata->reg_init[id];
1000 /* Miss out regulators which are not available due
1001 * to alternate functions.
1004 /* Register the regulators */
1005 pmic->desc[id].name = palmas_regs_info[id].name;
1006 pmic->desc[id].id = id;
1007 pmic->desc[id].type = REGULATOR_VOLTAGE;
1008 pmic->desc[id].owner = THIS_MODULE;
1010 if (id < PALMAS_REG_REGEN1) {
1011 pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
1012 if (reg_init && reg_init->roof_floor)
1013 pmic->desc[id].ops =
1014 &palmas_ops_ext_control_ldo;
1016 pmic->desc[id].ops = &palmas_ops_ldo;
1017 pmic->desc[id].min_uV = 900000;
1018 pmic->desc[id].uV_step = 50000;
1019 pmic->desc[id].linear_min_sel = 1;
1020 pmic->desc[id].enable_time = 500;
1021 pmic->desc[id].vsel_reg =
1022 PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
1023 palmas_regs_info[id].vsel_addr);
1024 pmic->desc[id].vsel_mask =
1025 PALMAS_LDO1_VOLTAGE_VSEL_MASK;
1026 pmic->desc[id].enable_reg =
1027 PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
1028 palmas_regs_info[id].ctrl_addr);
1029 pmic->desc[id].enable_mask =
1030 PALMAS_LDO1_CTRL_MODE_ACTIVE;
1032 /* Check if LDO8 is in tracking mode or not */
1033 if (pdata && (id == PALMAS_REG_LDO8) &&
1034 pdata->enable_ldo8_tracking) {
1035 palmas_enable_ldo8_track(palmas);
1036 pmic->desc[id].min_uV = 450000;
1037 pmic->desc[id].uV_step = 25000;
1040 /* LOD6 in vibrator mode will have enable time 2000us */
1041 if (pdata && pdata->ldo6_vibrator &&
1042 (id == PALMAS_REG_LDO6))
1043 pmic->desc[id].enable_time = 2000;
1045 pmic->desc[id].n_voltages = 1;
1046 if (reg_init && reg_init->roof_floor)
1047 pmic->desc[id].ops =
1048 &palmas_ops_ext_control_extreg;
1050 pmic->desc[id].ops = &palmas_ops_extreg;
1051 pmic->desc[id].enable_reg =
1052 PALMAS_BASE_TO_REG(PALMAS_RESOURCE_BASE,
1053 palmas_regs_info[id].ctrl_addr);
1054 pmic->desc[id].enable_mask =
1055 PALMAS_REGEN1_CTRL_MODE_ACTIVE;
1059 config.init_data = pdata->reg_data[id];
1061 config.init_data = NULL;
1063 pmic->desc[id].supply_name = palmas_regs_info[id].sname;
1064 config.of_node = palmas_matches[id].of_node;
1066 rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id],
1070 "failed to register %s regulator\n",
1072 return PTR_ERR(rdev);
1075 /* Save regulator for cleanup */
1076 pmic->rdev[id] = rdev;
1078 /* Initialise sleep/init values from platform data */
1080 reg_init = pdata->reg_init[id];
1082 if (id < PALMAS_REG_REGEN1)
1083 ret = palmas_ldo_init(palmas,
1086 ret = palmas_extreg_init(palmas,
1098 static const struct of_device_id of_palmas_match_tbl[] = {
1099 { .compatible = "ti,palmas-pmic", },
1100 { .compatible = "ti,twl6035-pmic", },
1101 { .compatible = "ti,twl6036-pmic", },
1102 { .compatible = "ti,twl6037-pmic", },
1103 { .compatible = "ti,tps65913-pmic", },
1104 { .compatible = "ti,tps65914-pmic", },
1105 { .compatible = "ti,tps80036-pmic", },
1106 { .compatible = "ti,tps659038-pmic", },
1110 static struct platform_driver palmas_driver = {
1112 .name = "palmas-pmic",
1113 .of_match_table = of_palmas_match_tbl,
1114 .owner = THIS_MODULE,
1116 .probe = palmas_regulators_probe,
1119 static int __init palmas_init(void)
1121 return platform_driver_register(&palmas_driver);
1123 subsys_initcall(palmas_init);
1125 static void __exit palmas_exit(void)
1127 platform_driver_unregister(&palmas_driver);
1129 module_exit(palmas_exit);
1131 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
1132 MODULE_DESCRIPTION("Palmas voltage regulator driver");
1133 MODULE_LICENSE("GPL");
1134 MODULE_ALIAS("platform:palmas-pmic");
1135 MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);