2 * Driver for Regulator part of Palmas PMIC Chips
4 * Copyright 2011-2013 Texas Instruments Inc.
6 * Author: Graeme Gregory <gg@slimlogic.co.uk>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
15 #include <linux/kernel.h>
16 #include <linux/module.h>
17 #include <linux/init.h>
18 #include <linux/err.h>
19 #include <linux/platform_device.h>
20 #include <linux/regulator/driver.h>
21 #include <linux/regulator/machine.h>
22 #include <linux/slab.h>
23 #include <linux/regmap.h>
24 #include <linux/mfd/palmas.h>
26 #include <linux/of_platform.h>
27 #include <linux/regulator/of_regulator.h>
37 static const struct regs_info palmas_regs_info[] = {
41 .vsel_addr = PALMAS_SMPS12_VOLTAGE,
42 .ctrl_addr = PALMAS_SMPS12_CTRL,
43 .tstep_addr = PALMAS_SMPS12_TSTEP,
48 .vsel_addr = PALMAS_SMPS12_VOLTAGE,
49 .ctrl_addr = PALMAS_SMPS12_CTRL,
50 .tstep_addr = PALMAS_SMPS12_TSTEP,
55 .vsel_addr = PALMAS_SMPS3_VOLTAGE,
56 .ctrl_addr = PALMAS_SMPS3_CTRL,
61 .vsel_addr = PALMAS_SMPS45_VOLTAGE,
62 .ctrl_addr = PALMAS_SMPS45_CTRL,
63 .tstep_addr = PALMAS_SMPS45_TSTEP,
68 .vsel_addr = PALMAS_SMPS45_VOLTAGE,
69 .ctrl_addr = PALMAS_SMPS45_CTRL,
70 .tstep_addr = PALMAS_SMPS45_TSTEP,
75 .vsel_addr = PALMAS_SMPS6_VOLTAGE,
76 .ctrl_addr = PALMAS_SMPS6_CTRL,
77 .tstep_addr = PALMAS_SMPS6_TSTEP,
82 .vsel_addr = PALMAS_SMPS7_VOLTAGE,
83 .ctrl_addr = PALMAS_SMPS7_CTRL,
88 .vsel_addr = PALMAS_SMPS8_VOLTAGE,
89 .ctrl_addr = PALMAS_SMPS8_CTRL,
90 .tstep_addr = PALMAS_SMPS8_TSTEP,
95 .vsel_addr = PALMAS_SMPS9_VOLTAGE,
96 .ctrl_addr = PALMAS_SMPS9_CTRL,
100 .sname = "smps10-in",
101 .ctrl_addr = PALMAS_SMPS10_CTRL,
106 .vsel_addr = PALMAS_LDO1_VOLTAGE,
107 .ctrl_addr = PALMAS_LDO1_CTRL,
112 .vsel_addr = PALMAS_LDO2_VOLTAGE,
113 .ctrl_addr = PALMAS_LDO2_CTRL,
118 .vsel_addr = PALMAS_LDO3_VOLTAGE,
119 .ctrl_addr = PALMAS_LDO3_CTRL,
124 .vsel_addr = PALMAS_LDO4_VOLTAGE,
125 .ctrl_addr = PALMAS_LDO4_CTRL,
130 .vsel_addr = PALMAS_LDO5_VOLTAGE,
131 .ctrl_addr = PALMAS_LDO5_CTRL,
136 .vsel_addr = PALMAS_LDO6_VOLTAGE,
137 .ctrl_addr = PALMAS_LDO6_CTRL,
142 .vsel_addr = PALMAS_LDO7_VOLTAGE,
143 .ctrl_addr = PALMAS_LDO7_CTRL,
148 .vsel_addr = PALMAS_LDO8_VOLTAGE,
149 .ctrl_addr = PALMAS_LDO8_CTRL,
154 .vsel_addr = PALMAS_LDO9_VOLTAGE,
155 .ctrl_addr = PALMAS_LDO9_CTRL,
160 .vsel_addr = PALMAS_LDOLN_VOLTAGE,
161 .ctrl_addr = PALMAS_LDOLN_CTRL,
165 .sname = "ldousb-in",
166 .vsel_addr = PALMAS_LDOUSB_VOLTAGE,
167 .ctrl_addr = PALMAS_LDOUSB_CTRL,
171 .ctrl_addr = PALMAS_REGEN1_CTRL,
175 .ctrl_addr = PALMAS_REGEN2_CTRL,
179 .ctrl_addr = PALMAS_REGEN3_CTRL,
183 .ctrl_addr = PALMAS_SYSEN1_CTRL,
187 .ctrl_addr = PALMAS_SYSEN2_CTRL,
191 static unsigned int palmas_smps_ramp_delay[4] = {0, 10000, 5000, 2500};
193 #define SMPS_CTRL_MODE_OFF 0x00
194 #define SMPS_CTRL_MODE_ON 0x01
195 #define SMPS_CTRL_MODE_ECO 0x02
196 #define SMPS_CTRL_MODE_PWM 0x03
198 /* These values are derived from the data sheet. And are the number of steps
199 * where there is a voltage change, the ranges at beginning and end of register
200 * max/min values where there are no change are ommitted.
202 * So they are basically (maxV-minV)/stepV
204 #define PALMAS_SMPS_NUM_VOLTAGES 116
205 #define PALMAS_SMPS10_NUM_VOLTAGES 2
206 #define PALMAS_LDO_NUM_VOLTAGES 50
208 #define SMPS10_VSEL (1<<3)
209 #define SMPS10_BOOST_EN (1<<2)
210 #define SMPS10_BYPASS_EN (1<<1)
211 #define SMPS10_SWITCH_EN (1<<0)
213 #define REGULATOR_SLAVE 0
215 static int palmas_smps_read(struct palmas *palmas, unsigned int reg,
220 addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
222 return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
225 static int palmas_smps_write(struct palmas *palmas, unsigned int reg,
230 addr = PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, reg);
232 return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
235 static int palmas_ldo_read(struct palmas *palmas, unsigned int reg,
240 addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
242 return regmap_read(palmas->regmap[REGULATOR_SLAVE], addr, dest);
245 static int palmas_ldo_write(struct palmas *palmas, unsigned int reg,
250 addr = PALMAS_BASE_TO_REG(PALMAS_LDO_BASE, reg);
252 return regmap_write(palmas->regmap[REGULATOR_SLAVE], addr, value);
255 static int palmas_is_enabled_smps(struct regulator_dev *dev)
257 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
258 int id = rdev_get_id(dev);
261 palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®);
263 reg &= PALMAS_SMPS12_CTRL_STATUS_MASK;
264 reg >>= PALMAS_SMPS12_CTRL_STATUS_SHIFT;
269 static int palmas_enable_smps(struct regulator_dev *dev)
271 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
272 int id = rdev_get_id(dev);
275 palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®);
277 reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
278 if (pmic->current_reg_mode[id])
279 reg |= pmic->current_reg_mode[id];
281 reg |= SMPS_CTRL_MODE_ON;
283 palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
288 static int palmas_disable_smps(struct regulator_dev *dev)
290 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
291 int id = rdev_get_id(dev);
294 palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®);
296 reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
298 palmas_smps_write(pmic->palmas, palmas_regs_info[id].ctrl_addr, reg);
303 static int palmas_set_mode_smps(struct regulator_dev *dev, unsigned int mode)
305 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
306 int id = rdev_get_id(dev);
308 bool rail_enable = true;
310 palmas_smps_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®);
311 reg &= ~PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
313 if (reg == SMPS_CTRL_MODE_OFF)
317 case REGULATOR_MODE_NORMAL:
318 reg |= SMPS_CTRL_MODE_ON;
320 case REGULATOR_MODE_IDLE:
321 reg |= SMPS_CTRL_MODE_ECO;
323 case REGULATOR_MODE_FAST:
324 reg |= SMPS_CTRL_MODE_PWM;
330 pmic->current_reg_mode[id] = reg & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
332 palmas_smps_write(pmic->palmas,
333 palmas_regs_info[id].ctrl_addr, reg);
337 static unsigned int palmas_get_mode_smps(struct regulator_dev *dev)
339 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
340 int id = rdev_get_id(dev);
343 reg = pmic->current_reg_mode[id] & PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
346 case SMPS_CTRL_MODE_ON:
347 return REGULATOR_MODE_NORMAL;
348 case SMPS_CTRL_MODE_ECO:
349 return REGULATOR_MODE_IDLE;
350 case SMPS_CTRL_MODE_PWM:
351 return REGULATOR_MODE_FAST;
357 static int palmas_list_voltage_smps(struct regulator_dev *dev,
360 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
361 int id = rdev_get_id(dev);
364 /* Read the multiplier set in VSEL register to return
365 * the correct voltage.
372 else if (selector < 6)
373 return 500000 * mult;
375 /* Voltage is linear mapping starting from selector 6,
376 * volt = (0.49V + ((selector - 5) * 0.01V)) * RANGE
377 * RANGE is either x1 or x2
379 return (490000 + ((selector - 5) * 10000)) * mult;
382 static int palmas_map_voltage_smps(struct regulator_dev *rdev,
383 int min_uV, int max_uV)
385 struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
386 int id = rdev_get_id(rdev);
392 if (pmic->range[id]) { /* RANGE is x2 */
393 if (min_uV < 1000000)
395 ret = DIV_ROUND_UP(min_uV - 1000000, 20000) + 6;
396 } else { /* RANGE is x1 */
399 ret = DIV_ROUND_UP(min_uV - 500000, 10000) + 6;
402 /* Map back into a voltage to verify we're still in bounds */
403 voltage = palmas_list_voltage_smps(rdev, ret);
404 if (voltage < min_uV || voltage > max_uV)
410 static int palma_smps_set_voltage_smps_time_sel(struct regulator_dev *rdev,
411 unsigned int old_selector, unsigned int new_selector)
413 struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
414 int id = rdev_get_id(rdev);
416 unsigned int ramp_delay = pmic->ramp_delay[id];
421 old_uv = palmas_list_voltage_smps(rdev, old_selector);
425 new_uv = palmas_list_voltage_smps(rdev, new_selector);
429 return DIV_ROUND_UP(abs(old_uv - new_uv), ramp_delay);
432 static int palmas_smps_set_ramp_delay(struct regulator_dev *rdev,
435 struct palmas_pmic *pmic = rdev_get_drvdata(rdev);
436 int id = rdev_get_id(rdev);
437 unsigned int reg = 0;
438 unsigned int addr = palmas_regs_info[id].tstep_addr;
441 /* SMPS3 and SMPS7 do not have tstep_addr setting */
443 case PALMAS_REG_SMPS3:
444 case PALMAS_REG_SMPS7:
450 else if (ramp_delay <= 2500)
452 else if (ramp_delay <= 5000)
457 ret = palmas_smps_write(pmic->palmas, addr, reg);
459 dev_err(pmic->palmas->dev, "TSTEP write failed: %d\n", ret);
463 pmic->ramp_delay[id] = palmas_smps_ramp_delay[reg];
467 static struct regulator_ops palmas_ops_smps = {
468 .is_enabled = palmas_is_enabled_smps,
469 .enable = palmas_enable_smps,
470 .disable = palmas_disable_smps,
471 .set_mode = palmas_set_mode_smps,
472 .get_mode = palmas_get_mode_smps,
473 .get_voltage_sel = regulator_get_voltage_sel_regmap,
474 .set_voltage_sel = regulator_set_voltage_sel_regmap,
475 .list_voltage = palmas_list_voltage_smps,
476 .map_voltage = palmas_map_voltage_smps,
477 .set_voltage_time_sel = palma_smps_set_voltage_smps_time_sel,
478 .set_ramp_delay = palmas_smps_set_ramp_delay,
481 static struct regulator_ops palmas_ops_smps10 = {
482 .is_enabled = regulator_is_enabled_regmap,
483 .enable = regulator_enable_regmap,
484 .disable = regulator_disable_regmap,
485 .get_voltage_sel = regulator_get_voltage_sel_regmap,
486 .set_voltage_sel = regulator_set_voltage_sel_regmap,
487 .list_voltage = regulator_list_voltage_linear,
488 .map_voltage = regulator_map_voltage_linear,
491 static int palmas_is_enabled_ldo(struct regulator_dev *dev)
493 struct palmas_pmic *pmic = rdev_get_drvdata(dev);
494 int id = rdev_get_id(dev);
497 palmas_ldo_read(pmic->palmas, palmas_regs_info[id].ctrl_addr, ®);
499 reg &= PALMAS_LDO1_CTRL_STATUS;
504 static struct regulator_ops palmas_ops_ldo = {
505 .is_enabled = palmas_is_enabled_ldo,
506 .enable = regulator_enable_regmap,
507 .disable = regulator_disable_regmap,
508 .get_voltage_sel = regulator_get_voltage_sel_regmap,
509 .set_voltage_sel = regulator_set_voltage_sel_regmap,
510 .list_voltage = regulator_list_voltage_linear,
511 .map_voltage = regulator_map_voltage_linear,
514 static struct regulator_ops palmas_ops_extreg = {
515 .is_enabled = regulator_is_enabled_regmap,
516 .enable = regulator_enable_regmap,
517 .disable = regulator_disable_regmap,
521 * setup the hardware based sleep configuration of the SMPS/LDO regulators
522 * from the platform data. This is different to the software based control
523 * supported by the regulator framework as it is controlled by toggling
524 * pins on the PMIC such as PREQ, SYSEN, ...
526 static int palmas_smps_init(struct palmas *palmas, int id,
527 struct palmas_reg_init *reg_init)
533 addr = palmas_regs_info[id].ctrl_addr;
535 ret = palmas_smps_read(palmas, addr, ®);
540 case PALMAS_REG_SMPS10:
541 reg &= ~PALMAS_SMPS10_CTRL_MODE_SLEEP_MASK;
542 if (reg_init->mode_sleep)
543 reg |= reg_init->mode_sleep <<
544 PALMAS_SMPS10_CTRL_MODE_SLEEP_SHIFT;
547 if (reg_init->warm_reset)
548 reg |= PALMAS_SMPS12_CTRL_WR_S;
550 reg &= ~PALMAS_SMPS12_CTRL_WR_S;
552 if (reg_init->roof_floor)
553 reg |= PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
555 reg &= ~PALMAS_SMPS12_CTRL_ROOF_FLOOR_EN;
557 reg &= ~PALMAS_SMPS12_CTRL_MODE_SLEEP_MASK;
558 if (reg_init->mode_sleep)
559 reg |= reg_init->mode_sleep <<
560 PALMAS_SMPS12_CTRL_MODE_SLEEP_SHIFT;
563 ret = palmas_smps_write(palmas, addr, reg);
567 if (palmas_regs_info[id].vsel_addr && reg_init->vsel) {
568 addr = palmas_regs_info[id].vsel_addr;
570 reg = reg_init->vsel;
572 ret = palmas_smps_write(palmas, addr, reg);
581 static int palmas_ldo_init(struct palmas *palmas, int id,
582 struct palmas_reg_init *reg_init)
588 addr = palmas_regs_info[id].ctrl_addr;
590 ret = palmas_ldo_read(palmas, addr, ®);
594 if (reg_init->warm_reset)
595 reg |= PALMAS_LDO1_CTRL_WR_S;
597 reg &= ~PALMAS_LDO1_CTRL_WR_S;
599 if (reg_init->mode_sleep)
600 reg |= PALMAS_LDO1_CTRL_MODE_SLEEP;
602 reg &= ~PALMAS_LDO1_CTRL_MODE_SLEEP;
604 ret = palmas_ldo_write(palmas, addr, reg);
611 static int palmas_extreg_init(struct palmas *palmas, int id,
612 struct palmas_reg_init *reg_init)
616 unsigned int val = 0;
618 addr = palmas_regs_info[id].ctrl_addr;
620 if (reg_init->mode_sleep)
621 val = PALMAS_REGEN1_CTRL_MODE_SLEEP;
623 ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
624 addr, PALMAS_REGEN1_CTRL_MODE_SLEEP, val);
626 dev_err(palmas->dev, "Resource reg 0x%02x update failed %d\n",
633 static void palmas_enable_ldo8_track(struct palmas *palmas)
639 addr = palmas_regs_info[PALMAS_REG_LDO8].ctrl_addr;
641 ret = palmas_ldo_read(palmas, addr, ®);
643 dev_err(palmas->dev, "Error in reading ldo8 control reg\n");
647 reg |= PALMAS_LDO8_CTRL_LDO_TRACKING_EN;
648 ret = palmas_ldo_write(palmas, addr, reg);
650 dev_err(palmas->dev, "Error in enabling tracking mode\n");
654 * When SMPS45 is set to off and LDO8 tracking is enabled, the LDO8
655 * output is defined by the LDO8_VOLTAGE.VSEL register divided by two,
656 * and can be set from 0.45 to 1.65 V.
658 addr = palmas_regs_info[PALMAS_REG_LDO8].vsel_addr;
659 ret = palmas_ldo_read(palmas, addr, ®);
661 dev_err(palmas->dev, "Error in reading ldo8 voltage reg\n");
665 reg = (reg << 1) & PALMAS_LDO8_VOLTAGE_VSEL_MASK;
666 ret = palmas_ldo_write(palmas, addr, reg);
668 dev_err(palmas->dev, "Error in setting ldo8 voltage reg\n");
673 static struct of_regulator_match palmas_matches[] = {
674 { .name = "smps12", },
675 { .name = "smps123", },
676 { .name = "smps3", },
677 { .name = "smps45", },
678 { .name = "smps457", },
679 { .name = "smps6", },
680 { .name = "smps7", },
681 { .name = "smps8", },
682 { .name = "smps9", },
683 { .name = "smps10", },
693 { .name = "ldoln", },
694 { .name = "ldousb", },
695 { .name = "regen1", },
696 { .name = "regen2", },
697 { .name = "regen3", },
698 { .name = "sysen1", },
699 { .name = "sysen2", },
702 static void palmas_dt_to_pdata(struct device *dev,
703 struct device_node *node,
704 struct palmas_pmic_platform_data *pdata)
706 struct device_node *regulators;
710 node = of_node_get(node);
711 regulators = of_find_node_by_name(node, "regulators");
713 dev_info(dev, "regulator node not found\n");
717 ret = of_regulator_match(dev, regulators, palmas_matches,
719 of_node_put(regulators);
721 dev_err(dev, "Error parsing regulator init data: %d\n", ret);
725 for (idx = 0; idx < PALMAS_NUM_REGS; idx++) {
726 if (!palmas_matches[idx].init_data ||
727 !palmas_matches[idx].of_node)
730 pdata->reg_data[idx] = palmas_matches[idx].init_data;
732 pdata->reg_init[idx] = devm_kzalloc(dev,
733 sizeof(struct palmas_reg_init), GFP_KERNEL);
735 pdata->reg_init[idx]->warm_reset =
736 of_property_read_bool(palmas_matches[idx].of_node,
739 pdata->reg_init[idx]->roof_floor =
740 of_property_read_bool(palmas_matches[idx].of_node,
743 ret = of_property_read_u32(palmas_matches[idx].of_node,
744 "ti,mode-sleep", &prop);
746 pdata->reg_init[idx]->mode_sleep = prop;
748 ret = of_property_read_bool(palmas_matches[idx].of_node,
751 pdata->reg_init[idx]->vsel =
752 PALMAS_SMPS12_VOLTAGE_RANGE;
754 if (idx == PALMAS_REG_LDO8)
755 pdata->enable_ldo8_tracking = of_property_read_bool(
756 palmas_matches[idx].of_node,
757 "ti,enable-ldo8-tracking");
760 pdata->ldo6_vibrator = of_property_read_bool(node, "ti,ldo6-vibrator");
764 static int palmas_regulators_probe(struct platform_device *pdev)
766 struct palmas *palmas = dev_get_drvdata(pdev->dev.parent);
767 struct palmas_pmic_platform_data *pdata = pdev->dev.platform_data;
768 struct device_node *node = pdev->dev.of_node;
769 struct regulator_dev *rdev;
770 struct regulator_config config = { };
771 struct palmas_pmic *pmic;
772 struct palmas_reg_init *reg_init;
774 unsigned int addr, reg;
776 if (node && !pdata) {
777 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
782 palmas_dt_to_pdata(&pdev->dev, node, pdata);
785 pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
789 pmic->dev = &pdev->dev;
790 pmic->palmas = palmas;
792 platform_set_drvdata(pdev, pmic);
794 ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, ®);
798 if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN)
801 if (reg & PALMAS_SMPS_CTRL_SMPS45_SMPS457_EN)
804 config.regmap = palmas->regmap[REGULATOR_SLAVE];
805 config.dev = &pdev->dev;
806 config.driver_data = pmic;
808 for (id = 0; id < PALMAS_REG_LDO1; id++) {
809 bool ramp_delay_support = false;
812 * Miss out regulators which are not available due
813 * to slaving configurations.
816 case PALMAS_REG_SMPS12:
817 case PALMAS_REG_SMPS3:
820 if (id == PALMAS_REG_SMPS12)
821 ramp_delay_support = true;
823 case PALMAS_REG_SMPS123:
826 ramp_delay_support = true;
828 case PALMAS_REG_SMPS45:
829 case PALMAS_REG_SMPS7:
832 if (id == PALMAS_REG_SMPS45)
833 ramp_delay_support = true;
835 case PALMAS_REG_SMPS457:
838 ramp_delay_support = true;
842 if ((id == PALMAS_REG_SMPS6) && (id == PALMAS_REG_SMPS8))
843 ramp_delay_support = true;
845 if (ramp_delay_support) {
846 addr = palmas_regs_info[id].tstep_addr;
847 ret = palmas_smps_read(pmic->palmas, addr, ®);
850 "reading TSTEP reg failed: %d\n", ret);
851 goto err_unregister_regulator;
853 pmic->desc[id].ramp_delay =
854 palmas_smps_ramp_delay[reg & 0x3];
855 pmic->ramp_delay[id] = pmic->desc[id].ramp_delay;
858 /* Initialise sleep/init values from platform data */
859 if (pdata && pdata->reg_init[id]) {
860 reg_init = pdata->reg_init[id];
861 ret = palmas_smps_init(palmas, id, reg_init);
863 goto err_unregister_regulator;
866 /* Register the regulators */
867 pmic->desc[id].name = palmas_regs_info[id].name;
868 pmic->desc[id].id = id;
871 case PALMAS_REG_SMPS10:
872 pmic->desc[id].n_voltages = PALMAS_SMPS10_NUM_VOLTAGES;
873 pmic->desc[id].ops = &palmas_ops_smps10;
874 pmic->desc[id].vsel_reg =
875 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
877 pmic->desc[id].vsel_mask = SMPS10_VSEL;
878 pmic->desc[id].enable_reg =
879 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
880 PALMAS_SMPS10_STATUS);
881 pmic->desc[id].enable_mask = SMPS10_BOOST_EN;
882 pmic->desc[id].min_uV = 3750000;
883 pmic->desc[id].uV_step = 1250000;
887 * Read and store the RANGE bit for later use
888 * This must be done before regulator is probed,
889 * otherwise we error in probe with unsupportable
890 * ranges. Read the current smps mode for later use.
892 addr = palmas_regs_info[id].vsel_addr;
894 ret = palmas_smps_read(pmic->palmas, addr, ®);
896 goto err_unregister_regulator;
897 if (reg & PALMAS_SMPS12_VOLTAGE_RANGE)
900 pmic->desc[id].ops = &palmas_ops_smps;
901 pmic->desc[id].n_voltages = PALMAS_SMPS_NUM_VOLTAGES;
902 pmic->desc[id].vsel_reg =
903 PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE,
904 palmas_regs_info[id].vsel_addr);
905 pmic->desc[id].vsel_mask =
906 PALMAS_SMPS12_VOLTAGE_VSEL_MASK;
908 /* Read the smps mode for later use. */
909 addr = palmas_regs_info[id].ctrl_addr;
910 ret = palmas_smps_read(pmic->palmas, addr, ®);
912 goto err_unregister_regulator;
913 pmic->current_reg_mode[id] = reg &
914 PALMAS_SMPS12_CTRL_MODE_ACTIVE_MASK;
917 pmic->desc[id].type = REGULATOR_VOLTAGE;
918 pmic->desc[id].owner = THIS_MODULE;
921 config.init_data = pdata->reg_data[id];
923 config.init_data = NULL;
925 pmic->desc[id].supply_name = palmas_regs_info[id].sname;
926 config.of_node = palmas_matches[id].of_node;
928 rdev = regulator_register(&pmic->desc[id], &config);
931 "failed to register %s regulator\n",
934 goto err_unregister_regulator;
937 /* Save regulator for cleanup */
938 pmic->rdev[id] = rdev;
941 /* Start this loop from the id left from previous loop */
942 for (; id < PALMAS_NUM_REGS; id++) {
944 /* Miss out regulators which are not available due
945 * to alternate functions.
948 /* Register the regulators */
949 pmic->desc[id].name = palmas_regs_info[id].name;
950 pmic->desc[id].id = id;
951 pmic->desc[id].type = REGULATOR_VOLTAGE;
952 pmic->desc[id].owner = THIS_MODULE;
954 if (id < PALMAS_REG_REGEN1) {
955 pmic->desc[id].n_voltages = PALMAS_LDO_NUM_VOLTAGES;
956 pmic->desc[id].ops = &palmas_ops_ldo;
957 pmic->desc[id].min_uV = 900000;
958 pmic->desc[id].uV_step = 50000;
959 pmic->desc[id].linear_min_sel = 1;
960 pmic->desc[id].vsel_reg =
961 PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
962 palmas_regs_info[id].vsel_addr);
963 pmic->desc[id].vsel_mask =
964 PALMAS_LDO1_VOLTAGE_VSEL_MASK;
965 pmic->desc[id].enable_reg =
966 PALMAS_BASE_TO_REG(PALMAS_LDO_BASE,
967 palmas_regs_info[id].ctrl_addr);
968 pmic->desc[id].enable_mask =
969 PALMAS_LDO1_CTRL_MODE_ACTIVE;
971 /* Check if LDO8 is in tracking mode or not */
972 if (pdata && (id == PALMAS_REG_LDO8) &&
973 pdata->enable_ldo8_tracking) {
974 palmas_enable_ldo8_track(palmas);
975 pmic->desc[id].min_uV = 450000;
976 pmic->desc[id].uV_step = 25000;
979 pmic->desc[id].n_voltages = 1;
980 pmic->desc[id].ops = &palmas_ops_extreg;
981 pmic->desc[id].enable_reg =
982 PALMAS_BASE_TO_REG(PALMAS_RESOURCE_BASE,
983 palmas_regs_info[id].ctrl_addr);
984 pmic->desc[id].enable_mask =
985 PALMAS_REGEN1_CTRL_MODE_ACTIVE;
989 config.init_data = pdata->reg_data[id];
991 config.init_data = NULL;
993 pmic->desc[id].supply_name = palmas_regs_info[id].sname;
994 config.of_node = palmas_matches[id].of_node;
996 rdev = regulator_register(&pmic->desc[id], &config);
999 "failed to register %s regulator\n",
1001 ret = PTR_ERR(rdev);
1002 goto err_unregister_regulator;
1005 /* Save regulator for cleanup */
1006 pmic->rdev[id] = rdev;
1008 /* Initialise sleep/init values from platform data */
1010 reg_init = pdata->reg_init[id];
1012 if (id < PALMAS_REG_REGEN1)
1013 ret = palmas_ldo_init(palmas,
1016 ret = palmas_extreg_init(palmas,
1019 regulator_unregister(pmic->rdev[id]);
1020 goto err_unregister_regulator;
1029 err_unregister_regulator:
1031 regulator_unregister(pmic->rdev[id]);
1035 static int palmas_regulators_remove(struct platform_device *pdev)
1037 struct palmas_pmic *pmic = platform_get_drvdata(pdev);
1040 for (id = 0; id < PALMAS_NUM_REGS; id++)
1041 regulator_unregister(pmic->rdev[id]);
1045 static struct of_device_id of_palmas_match_tbl[] = {
1046 { .compatible = "ti,palmas-pmic", },
1047 { .compatible = "ti,twl6035-pmic", },
1048 { .compatible = "ti,twl6036-pmic", },
1049 { .compatible = "ti,twl6037-pmic", },
1050 { .compatible = "ti,tps65913-pmic", },
1051 { .compatible = "ti,tps65914-pmic", },
1052 { .compatible = "ti,tps80036-pmic", },
1056 static struct platform_driver palmas_driver = {
1058 .name = "palmas-pmic",
1059 .of_match_table = of_palmas_match_tbl,
1060 .owner = THIS_MODULE,
1062 .probe = palmas_regulators_probe,
1063 .remove = palmas_regulators_remove,
1066 static int __init palmas_init(void)
1068 return platform_driver_register(&palmas_driver);
1070 subsys_initcall(palmas_init);
1072 static void __exit palmas_exit(void)
1074 platform_driver_unregister(&palmas_driver);
1076 module_exit(palmas_exit);
1078 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
1079 MODULE_DESCRIPTION("Palmas voltage regulator driver");
1080 MODULE_LICENSE("GPL");
1081 MODULE_ALIAS("platform:palmas-pmic");
1082 MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);