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);
329 /* Switch the enable value to ensure this is used for enable */
330 pmic->desc[id].enable_val = pmic->current_reg_mode[id];
335 static unsigned int palmas_get_mode_smps(struct regulator_dev *dev)
337 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
338 int id = rdev_get_id(dev);
341 reg = pmic->current_reg_mode[id] & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
344 case SMPS_CTRL_MODE_ON:
345 return REGULATOR_MODE_NORMAL;
346 case SMPS_CTRL_MODE_ECO:
347 return REGULATOR_MODE_IDLE;
348 case SMPS_CTRL_MODE_PWM:
349 return REGULATOR_MODE_FAST;
355 static int palmas_smps_set_ramp_delay(struct regulator_dev *rdev,
358 struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
359 int id = rdev_get_id(rdev);
360 unsigned int reg = 0;
361 unsigned int addr = palmas_regs_info[id].tstep_addr;
364 /* SMPS3 and SMPS7 do not have tstep_addr setting */
366 case PALMAS_REG_SMPS3:
367 case PALMAS_REG_SMPS7:
373 else if (ramp_delay <= 2500)
375 else if (ramp_delay <= 5000)
380 ret = palmas_smps_write(pmic->palmas, addr, reg);
382 dev_err(pmic->palmas->dev, "TSTEP write failed: %d\n", ret);
386 pmic->ramp_delay[id] = palmas_smps_ramp_delay[reg];
390 static struct regulator_ops palmas_ops_smps = {
391 .is_enabled = regulator_is_enabled_regmap,
392 .enable = regulator_enable_regmap,
393 .disable = regulator_disable_regmap,
394 .set_mode = palmas_set_mode_smps,
395 .get_mode = palmas_get_mode_smps,
396 .get_voltage_sel = regulator_get_voltage_sel_regmap,
397 .set_voltage_sel = regulator_set_voltage_sel_regmap,
398 .list_voltage = regulator_list_voltage_linear_range,
399 .map_voltage = regulator_map_voltage_linear_range,
400 .set_voltage_time_sel = regulator_set_voltage_time_sel,
401 .set_ramp_delay = palmas_smps_set_ramp_delay,
404 static struct regulator_ops palmas_ops_ext_control_smps = {
405 .set_mode = palmas_set_mode_smps,
406 .get_mode = palmas_get_mode_smps,
407 .get_voltage_sel = regulator_get_voltage_sel_regmap,
408 .set_voltage_sel = regulator_set_voltage_sel_regmap,
409 .list_voltage = regulator_list_voltage_linear_range,
410 .map_voltage = regulator_map_voltage_linear_range,
411 .set_voltage_time_sel = regulator_set_voltage_time_sel,
412 .set_ramp_delay = palmas_smps_set_ramp_delay,
415 static struct regulator_ops palmas_ops_smps10 = {
416 .is_enabled = regulator_is_enabled_regmap,
417 .enable = regulator_enable_regmap,
418 .disable = regulator_disable_regmap,
419 .get_voltage_sel = regulator_get_voltage_sel_regmap,
420 .set_voltage_sel = regulator_set_voltage_sel_regmap,
421 .list_voltage = regulator_list_voltage_linear,
422 .map_voltage = regulator_map_voltage_linear,
423 .set_bypass = regulator_set_bypass_regmap,
424 .get_bypass = regulator_get_bypass_regmap,
427 static int palmas_is_enabled_ldo(struct regulator_dev *dev)
429 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
430 int id = rdev_get_id(dev);
433 palmas_ldo_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®);
435 reg &= PALMAS_LDO1_CTRL_STATUS;
440 static struct regulator_ops palmas_ops_ldo = {
441 .is_enabled = palmas_is_enabled_ldo,
442 .enable = regulator_enable_regmap,
443 .disable = regulator_disable_regmap,
444 .get_voltage_sel = regulator_get_voltage_sel_regmap,
445 .set_voltage_sel = regulator_set_voltage_sel_regmap,
446 .list_voltage = regulator_list_voltage_linear,
447 .map_voltage = regulator_map_voltage_linear,
450 static struct regulator_ops palmas_ops_ext_control_ldo = {
451 .get_voltage_sel = regulator_get_voltage_sel_regmap,
452 .set_voltage_sel = regulator_set_voltage_sel_regmap,
453 .list_voltage = regulator_list_voltage_linear,
454 .map_voltage = regulator_map_voltage_linear,
457 static struct regulator_ops palmas_ops_extreg = {
458 .is_enabled = regulator_is_enabled_regmap,
459 .enable = regulator_enable_regmap,
460 .disable = regulator_disable_regmap,
463 static struct regulator_ops palmas_ops_ext_control_extreg = {
466 static int palmas_regulator_config_external(struct palmas *palmas, int id,
467 struct palmas_reg_init *reg_init)
469 int sleep_id = palmas_regs_info[id].sleep_id;
472 ret = palmas_ext_control_req_config(palmas, sleep_id,
473 reg_init->roof_floor, true);
476 "Ext control config for regulator %d failed %d\n",
482 * setup the hardware based sleep configuration of the SMPS/LDO regulators
483 * from the platform data. This is different to the software based control
484 * supported by the regulator framework as it is controlled by toggling
485 * pins on the PMIC such as PREQ, SYSEN, ...
487 static int palmas_smps_init(struct palmas *palmas, int id,
488 struct palmas_reg_init *reg_init)
494 addr = palmas_regs_info[id].ctrl_addr;
496 ret = palmas_smps_read(palmas, addr, ®);
501 case PALMAS_REG_SMPS10_OUT1:
502 case PALMAS_REG_SMPS10_OUT2:
503 reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
504 if (reg_init->mode_sleep)
505 reg |= reg_init->mode_sleep <<
506 PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
509 if (reg_init->warm_reset)
510 reg |= PALMAS_SMPS12_CTRL_WR_S;
512 reg &= ~PALMAS_SMPS12_CTRL_WR_S;
514 if (reg_init->roof_floor)
515 reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
517 reg &= ~PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
519 reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK;
520 if (reg_init->mode_sleep)
521 reg |= reg_init->mode_sleep <<
522 PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT;
525 ret = palmas_smps_write(palmas, addr, reg);
529 if (palmas_regs_info[id].vsel_addr && reg_init->vsel) {
530 addr = palmas_regs_info[id].vsel_addr;
532 reg = reg_init->vsel;
534 ret = palmas_smps_write(palmas, addr, reg);
539 if (reg_init->roof_floor && (id != PALMAS_REG_SMPS10_OUT1) &&
540 (id != PALMAS_REG_SMPS10_OUT2)) {
541 /* Enable externally controlled regulator */
542 addr = palmas_regs_info[id].ctrl_addr;
543 ret = palmas_smps_read(palmas, addr, ®);
547 if (!(reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK)) {
548 reg |= SMPS_CTRL_MODE_ON;
549 ret = palmas_smps_write(palmas, addr, reg);
553 return palmas_regulator_config_external(palmas, id, reg_init);
558 static int palmas_ldo_init(struct palmas *palmas, int id,
559 struct palmas_reg_init *reg_init)
565 addr = palmas_regs_info[id].ctrl_addr;
567 ret = palmas_ldo_read(palmas, addr, ®);
571 if (reg_init->warm_reset)
572 reg |= PALMAS_LDO1_CTRL_WR_S;
574 reg &= ~PALMAS_LDO1_CTRL_WR_S;
576 if (reg_init->mode_sleep)
577 reg |= PALMAS_LDO1_CTRL_MODE_SLEEP;
579 reg &= ~PALMAS_LDO1_CTRL_MODE_SLEEP;
581 ret = palmas_ldo_write(palmas, addr, reg);
585 if (reg_init->roof_floor) {
586 /* Enable externally controlled regulator */
587 addr = palmas_regs_info[id].ctrl_addr;
588 ret = palmas_update_bits(palmas, PALMAS_LDO_BASE,
589 addr, PALMAS_LDO1_CTRL_MODE_ACTIVE,
590 PALMAS_LDO1_CTRL_MODE_ACTIVE);
593 "LDO Register 0x%02x update failed %d\n",
597 return palmas_regulator_config_external(palmas, id, reg_init);
602 static int palmas_extreg_init(struct palmas *palmas, int id,
603 struct palmas_reg_init *reg_init)
607 unsigned int val = 0;
609 addr = palmas_regs_info[id].ctrl_addr;
611 if (reg_init->mode_sleep)
612 val = PALMAS_REGEN1_CTRL_MODE_SLEEP;
614 ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
615 addr, PALMAS_REGEN1_CTRL_MODE_SLEEP, val);
617 dev_err(palmas->dev, "Resource reg 0x%02x update failed %d\n",
622 if (reg_init->roof_floor) {
623 /* Enable externally controlled regulator */
624 addr = palmas_regs_info[id].ctrl_addr;
625 ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
626 addr, PALMAS_REGEN1_CTRL_MODE_ACTIVE,
627 PALMAS_REGEN1_CTRL_MODE_ACTIVE);
630 "Resource Register 0x%02x update failed %d\n",
634 return palmas_regulator_config_external(palmas, id, reg_init);
639 static void palmas_enable_ldo8_track(struct palmas *palmas)
645 addr = palmas_regs_info[PALMAS_REG_LDO8].ctrl_addr;
647 ret = palmas_ldo_read(palmas, addr, ®);
649 dev_err(palmas->dev, "Error in reading ldo8 control reg\n");
653 reg |= PALMAS_LDO8_CTRL_LDO_TRACKING_EN;
654 ret = palmas_ldo_write(palmas, addr, reg);
656 dev_err(palmas->dev, "Error in enabling tracking mode\n");
660 * When SMPS45 is set to off and LDO8 tracking is enabled, the LDO8
661 * output is defined by the LDO8_VOLTAGE.VSEL register divided by two,
662 * and can be set from 0.45 to 1.65 V.
664 addr = palmas_regs_info[PALMAS_REG_LDO8].vsel_addr;
665 ret = palmas_ldo_read(palmas, addr, ®);
667 dev_err(palmas->dev, "Error in reading ldo8 voltage reg\n");
671 reg = (reg << 1) & PALMAS_LDO8_VOLTAGE_VSEL_MASK;
672 ret = palmas_ldo_write(palmas, addr, reg);
674 dev_err(palmas->dev, "Error in setting ldo8 voltage reg\n");
679 static struct of_regulator_match palmas_matches[] = {
680 { .name = "smps12", },
681 { .name = "smps123", },
682 { .name = "smps3", },
683 { .name = "smps45", },
684 { .name = "smps457", },
685 { .name = "smps6", },
686 { .name = "smps7", },
687 { .name = "smps8", },
688 { .name = "smps9", },
689 { .name = "smps10_out2", },
690 { .name = "smps10_out1", },
700 { .name = "ldoln", },
701 { .name = "ldousb", },
702 { .name = "regen1", },
703 { .name = "regen2", },
704 { .name = "regen3", },
705 { .name = "sysen1", },
706 { .name = "sysen2", },
709 static void palmas_dt_to_pdata(struct device *dev,
710 struct device_node *node,
711 struct palmas_pmic_platform_data *pdata)
713 struct device_node *regulators;
717 node = of_node_get(node);
718 regulators = of_get_child_by_name(node, "regulators");
720 dev_info(dev, "regulator node not found\n");
724 ret = of_regulator_match(dev, regulators, palmas_matches,
726 of_node_put(regulators);
728 dev_err(dev, "Error parsing regulator init data: %d\n", ret);
732 for (idx = 0; idx < PALMAS_NUM_REGS; idx++) {
733 if (!palmas_matches[idx].init_data ||
734 !palmas_matches[idx].of_node)
737 pdata->reg_data[idx] = palmas_matches[idx].init_data;
739 pdata->reg_init[idx] = devm_kzalloc(dev,
740 sizeof(struct palmas_reg_init), GFP_KERNEL);
742 pdata->reg_init[idx]->warm_reset =
743 of_property_read_bool(palmas_matches[idx].of_node,
746 ret = of_property_read_u32(palmas_matches[idx].of_node,
747 "ti,roof-floor", &prop);
748 /* EINVAL: Property not found */
749 if (ret != -EINVAL) {
752 /* use default value, when no value is specified */
753 econtrol = PALMAS_EXT_CONTROL_NSLEEP;
757 econtrol = PALMAS_EXT_CONTROL_ENABLE1;
760 econtrol = PALMAS_EXT_CONTROL_ENABLE2;
763 econtrol = PALMAS_EXT_CONTROL_NSLEEP;
768 "%s: Invalid roof-floor option: %u\n",
769 palmas_matches[idx].name, prop);
773 pdata->reg_init[idx]->roof_floor = econtrol;
776 ret = of_property_read_u32(palmas_matches[idx].of_node,
777 "ti,mode-sleep", &prop);
779 pdata->reg_init[idx]->mode_sleep = prop;
781 ret = of_property_read_bool(palmas_matches[idx].of_node,
784 pdata->reg_init[idx]->vsel =
785 PALMAS_SMPS12_VOLTAGE_RANGE;
787 if (idx == PALMAS_REG_LDO8)
788 pdata->enable_ldo8_tracking = of_property_read_bool(
789 palmas_matches[idx].of_node,
790 "ti,enable-ldo8-tracking");
793 pdata->ldo6_vibrator = of_property_read_bool(node, "ti,ldo6-vibrator");
797 static int palmas_regulators_probe(struct platform_device *pdev)
799 struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
800 struct palmas_pmic_platform_data *pdata = dev_get_platdata(&pdev->dev);
801 struct device_node *node = pdev->dev.of_node;
802 struct regulator_dev *rdev;
803 struct regulator_config config = { };
804 struct palmas_pmic *pmic;
805 struct palmas_reg_init *reg_init;
807 unsigned int addr, reg;
809 if (node && !pdata) {
810 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
815 palmas_dt_to_pdata(&pdev->dev, node, pdata);
818 pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
822 pmic->dev = &pdev->dev;
823 pmic->palmas = palmas;
825 platform_set_drvdata(pdev, pmic);
827 ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, ®);
831 if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN)
834 if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN)
837 config.regmap = palmas->regmap[REGULATOR_SLAVE];
838 config.dev = &pdev->dev;
839 config.driver_data = pmic;
841 for (id = 0; id < PALMAS_REG_LDO1; id++) {
842 bool ramp_delay_support = false;
845 * Miss out regulators which are not available due
846 * to slaving configurations.
849 case PALMAS_REG_SMPS12:
850 case PALMAS_REG_SMPS3:
853 if (id == PALMAS_REG_SMPS12)
854 ramp_delay_support = true;
856 case PALMAS_REG_SMPS123:
859 ramp_delay_support = true;
861 case PALMAS_REG_SMPS45:
862 case PALMAS_REG_SMPS7:
865 if (id == PALMAS_REG_SMPS45)
866 ramp_delay_support = true;
868 case PALMAS_REG_SMPS457:
871 ramp_delay_support = true;
873 case PALMAS_REG_SMPS10_OUT1:
874 case PALMAS_REG_SMPS10_OUT2:
875 if (!PALMAS_PMIC_HAS(palmas, SMPS10_BOOST))
879 if ((id == PALMAS_REG_SMPS6) || (id == PALMAS_REG_SMPS8))
880 ramp_delay_support = true;
882 if (ramp_delay_support) {
883 addr = palmas_regs_info[id].tstep_addr;
884 ret = palmas_smps_read(pmic->palmas, addr, ®);
887 "reading TSTEP reg failed: %d\n", ret);
890 pmic->desc[id].ramp_delay =
891 palmas_smps_ramp_delay[reg & 0x3];
892 pmic->ramp_delay[id] = pmic->desc[id].ramp_delay;
895 /* Initialise sleep/init values from platform data */
896 if (pdata && pdata->reg_init[id]) {
897 reg_init = pdata->reg_init[id];
898 ret = palmas_smps_init(palmas, id, reg_init);
905 /* Register the regulators */
906 pmic->desc[id].name = palmas_regs_info[id].name;
907 pmic->desc[id].id = id;
910 case PALMAS_REG_SMPS10_OUT1:
911 case PALMAS_REG_SMPS10_OUT2:
912 pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
913 pmic->desc[id].ops = &palmas_ops_smps10;
914 pmic->desc[id].vsel_reg =
915 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
917 pmic->desc[id].vsel_mask = SMPS10_VSEL;
918 pmic->desc[id].enable_reg =
919 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
921 if (id == PALMAS_REG_SMPS10_OUT1)
922 pmic->desc[id].enable_mask = SMPS10_SWITCH_EN;
924 pmic->desc[id].enable_mask = SMPS10_BOOST_EN;
925 pmic->desc[id].bypass_reg =
926 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
928 pmic->desc[id].bypass_mask = SMPS10_BYPASS_EN;
929 pmic->desc[id].min_uV = 3750000;
930 pmic->desc[id].uV_step = 1250000;
934 * Read and store the RANGE bit for later use
935 * This must be done before regulator is probed,
936 * otherwise we error in probe with unsupportable
937 * ranges. Read the current smps mode for later use.
939 addr = palmas_regs_info[id].vsel_addr;
940 pmic->desc[id].n_linear_ranges = 3;
942 ret = palmas_smps_read(pmic->palmas, addr, ®);
945 if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
948 pmic->desc[id].linear_ranges = smps_high_ranges;
950 pmic->desc[id].linear_ranges = smps_low_ranges;
952 if (reg_init && reg_init->roof_floor)
954 &palmas_ops_ext_control_smps;
956 pmic->desc[id].ops = &palmas_ops_smps;
957 pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
958 pmic->desc[id].vsel_reg =
959 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
960 palmas_regs_info[id].vsel_addr);
961 pmic->desc[id].vsel_mask =
962 PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
964 /* Read the smps mode for later use. */
965 addr = palmas_regs_info[id].ctrl_addr;
966 ret = palmas_smps_read(pmic->palmas, addr, ®);
969 pmic->current_reg_mode[id] = reg &
970 PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
972 pmic->desc[id].enable_reg =
973 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
974 palmas_regs_info[id].ctrl_addr);
975 pmic->desc[id].enable_mask =
976 PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
977 /* set_mode overrides this value */
978 pmic->desc[id].enable_val = SMPS_CTRL_MODE_ON;
981 pmic->desc[id].type = REGULATOR_VOLTAGE;
982 pmic->desc[id].owner = THIS_MODULE;
985 config.init_data = pdata->reg_data[id];
987 config.init_data = NULL;
989 pmic->desc[id].supply_name = palmas_regs_info[id].sname;
990 config.of_node = palmas_matches[id].of_node;
992 rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id],
996 "failed to register %s regulator\n",
998 return PTR_ERR(rdev);
1001 /* Save regulator for cleanup */
1002 pmic->rdev[id] = rdev;
1005 /* Start this loop from the id left from previous loop */
1006 for (; id < PALMAS_NUM_REGS; id++) {
1007 if (pdata && pdata->reg_init[id])
1008 reg_init = pdata->reg_init[id];
1012 /* Miss out regulators which are not available due
1013 * to alternate functions.
1016 /* Register the regulators */
1017 pmic->desc[id].name = palmas_regs_info[id].name;
1018 pmic->desc[id].id = id;
1019 pmic->desc[id].type = REGULATOR_VOLTAGE;
1020 pmic->desc[id].owner = THIS_MODULE;
1022 if (id < PALMAS_REG_REGEN1) {
1023 pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
1024 if (reg_init && reg_init->roof_floor)
1025 pmic->desc[id].ops =
1026 &palmas_ops_ext_control_ldo;
1028 pmic->desc[id].ops = &palmas_ops_ldo;
1029 pmic->desc[id].min_uV = 900000;
1030 pmic->desc[id].uV_step = 50000;
1031 pmic->desc[id].linear_min_sel = 1;
1032 pmic->desc[id].enable_time = 500;
1033 pmic->desc[id].vsel_reg =
1034 PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
1035 palmas_regs_info[id].vsel_addr);
1036 pmic->desc[id].vsel_mask =
1037 PALMAS_LDO1_VOLTAGE_VSEL_MASK;
1038 pmic->desc[id].enable_reg =
1039 PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
1040 palmas_regs_info[id].ctrl_addr);
1041 pmic->desc[id].enable_mask =
1042 PALMAS_LDO1_CTRL_MODE_ACTIVE;
1044 /* Check if LDO8 is in tracking mode or not */
1045 if (pdata && (id == PALMAS_REG_LDO8) &&
1046 pdata->enable_ldo8_tracking) {
1047 palmas_enable_ldo8_track(palmas);
1048 pmic->desc[id].min_uV = 450000;
1049 pmic->desc[id].uV_step = 25000;
1052 /* LOD6 in vibrator mode will have enable time 2000us */
1053 if (pdata && pdata->ldo6_vibrator &&
1054 (id == PALMAS_REG_LDO6))
1055 pmic->desc[id].enable_time = 2000;
1057 pmic->desc[id].n_voltages = 1;
1058 if (reg_init && reg_init->roof_floor)
1059 pmic->desc[id].ops =
1060 &palmas_ops_ext_control_extreg;
1062 pmic->desc[id].ops = &palmas_ops_extreg;
1063 pmic->desc[id].enable_reg =
1064 PALMAS_BASE_TO_REG(PALMAS_RESOURCE_BASE,
1065 palmas_regs_info[id].ctrl_addr);
1066 pmic->desc[id].enable_mask =
1067 PALMAS_REGEN1_CTRL_MODE_ACTIVE;
1071 config.init_data = pdata->reg_data[id];
1073 config.init_data = NULL;
1075 pmic->desc[id].supply_name = palmas_regs_info[id].sname;
1076 config.of_node = palmas_matches[id].of_node;
1078 rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id],
1082 "failed to register %s regulator\n",
1084 return PTR_ERR(rdev);
1087 /* Save regulator for cleanup */
1088 pmic->rdev[id] = rdev;
1090 /* Initialise sleep/init values from platform data */
1092 reg_init = pdata->reg_init[id];
1094 if (id < PALMAS_REG_REGEN1)
1095 ret = palmas_ldo_init(palmas,
1098 ret = palmas_extreg_init(palmas,
1110 static const struct of_device_id of_palmas_match_tbl[] = {
1111 { .compatible = "ti,palmas-pmic", },
1112 { .compatible = "ti,twl6035-pmic", },
1113 { .compatible = "ti,twl6036-pmic", },
1114 { .compatible = "ti,twl6037-pmic", },
1115 { .compatible = "ti,tps65913-pmic", },
1116 { .compatible = "ti,tps65914-pmic", },
1117 { .compatible = "ti,tps80036-pmic", },
1118 { .compatible = "ti,tps659038-pmic", },
1122 static struct platform_driver palmas_driver = {
1124 .name = "palmas-pmic",
1125 .of_match_table = of_palmas_match_tbl,
1126 .owner = THIS_MODULE,
1128 .probe = palmas_regulators_probe,
1131 static int __init palmas_init(void)
1133 return platform_driver_register(&palmas_driver);
1135 subsys_initcall(palmas_init);
1137 static void __exit palmas_exit(void)
1139 platform_driver_unregister(&palmas_driver);
1141 module_exit(palmas_exit);
1143 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
1144 MODULE_DESCRIPTION("Palmas voltage regulator driver");
1145 MODULE_LICENSE("GPL");
1146 MODULE_ALIAS("platform:palmas-pmic");
1147 MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);