diff options
Diffstat (limited to 'drivers/regulator/da9063-regulator.c')
| -rw-r--r-- | drivers/regulator/da9063-regulator.c | 134 |
1 files changed, 40 insertions, 94 deletions
diff --git a/drivers/regulator/da9063-regulator.c b/drivers/regulator/da9063-regulator.c index 2b0c7a85306a..6f9ce1a6e44d 100644 --- a/drivers/regulator/da9063-regulator.c +++ b/drivers/regulator/da9063-regulator.c @@ -1,18 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// Regulator driver for DA9063 PMIC series +// +// Copyright 2012 Dialog Semiconductors Ltd. +// Copyright 2013 Philipp Zabel, Pengutronix +// +// Author: Krystian Garbaciak <krystian.garbaciak@diasemi.com> -/* - * Regulator driver for DA9063 PMIC series - * - * Copyright 2012 Dialog Semiconductors Ltd. - * Copyright 2013 Philipp Zabel, Pengutronix - * - * Author: Krystian Garbaciak <krystian.garbaciak@diasemi.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> @@ -38,17 +32,12 @@ struct da9063_regulator_info { struct regulator_desc desc; - /* Current limiting */ - unsigned n_current_limits; - const int *current_limits; - /* DA9063 main register fields */ struct reg_field mode; /* buck mode of operation */ struct reg_field suspend; struct reg_field sleep; struct reg_field suspend_sleep; unsigned int suspend_vsel_reg; - struct reg_field ilimit; /* DA9063 event detection bit */ struct reg_field oc_event; @@ -73,15 +62,18 @@ struct da9063_regulator_info { .suspend_vsel_reg = DA9063_REG_V##regl_name##_B /* Macros for voltage DC/DC converters (BUCKs) */ -#define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array) \ +#define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array, \ + creg, cmask) \ .desc.id = chip##_ID_##regl_name, \ .desc.name = __stringify(chip##_##regl_name), \ .desc.ops = &da9063_buck_ops, \ .desc.min_uV = (min_mV) * 1000, \ .desc.uV_step = (step_mV) * 1000, \ .desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \ - .current_limits = limits_array, \ - .n_current_limits = ARRAY_SIZE(limits_array) + .desc.csel_reg = (creg), \ + .desc.csel_mask = (cmask), \ + .desc.curr_table = limits_array, \ + .desc.n_current_limits = ARRAY_SIZE(limits_array) #define DA9063_BUCK_COMMON_FIELDS(regl_name) \ .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ @@ -112,7 +104,6 @@ struct da9063_regulator { struct regmap_field *suspend; struct regmap_field *sleep; struct regmap_field *suspend_sleep; - struct regmap_field *ilimit; }; /* Encapsulates all information for the regulators driver */ @@ -134,65 +125,32 @@ enum { /* Current limits array (in uA) for BCORE1, BCORE2, BPRO. Entry indexes corresponds to register values. */ -static const int da9063_buck_a_limits[] = { +static const unsigned int da9063_buck_a_limits[] = { 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000, 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000 }; /* Current limits array (in uA) for BMEM, BIO, BPERI. Entry indexes corresponds to register values. */ -static const int da9063_buck_b_limits[] = { +static const unsigned int da9063_buck_b_limits[] = { 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000, 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000 }; /* Current limits array (in uA) for merged BCORE1 and BCORE2. Entry indexes corresponds to register values. */ -static const int da9063_bcores_merged_limits[] = { +static const unsigned int da9063_bcores_merged_limits[] = { 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000, 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000 }; /* Current limits array (in uA) for merged BMEM and BIO. Entry indexes corresponds to register values. */ -static const int da9063_bmem_bio_merged_limits[] = { +static const unsigned int da9063_bmem_bio_merged_limits[] = { 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000, 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000 }; -static int da9063_set_current_limit(struct regulator_dev *rdev, - int min_uA, int max_uA) -{ - struct da9063_regulator *regl = rdev_get_drvdata(rdev); - const struct da9063_regulator_info *rinfo = regl->info; - int n, tval; - - for (n = rinfo->n_current_limits - 1; n >= 0; n--) { - tval = rinfo->current_limits[n]; - if (tval >= min_uA && tval <= max_uA) - return regmap_field_write(regl->ilimit, n); - } - - return -EINVAL; -} - -static int da9063_get_current_limit(struct regulator_dev *rdev) -{ - struct da9063_regulator *regl = rdev_get_drvdata(rdev); - const struct da9063_regulator_info *rinfo = regl->info; - unsigned int sel; - int ret; - - ret = regmap_field_read(regl->ilimit, &sel); - if (ret < 0) - return ret; - - if (sel >= rinfo->n_current_limits) - sel = rinfo->n_current_limits - 1; - - return rinfo->current_limits[sel]; -} - static int da9063_buck_set_mode(struct regulator_dev *rdev, unsigned mode) { struct da9063_regulator *regl = rdev_get_drvdata(rdev); @@ -434,8 +392,8 @@ static const struct regulator_ops da9063_buck_ops = { .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_sel = regulator_set_voltage_sel_regmap, .list_voltage = regulator_list_voltage_linear, - .set_current_limit = da9063_set_current_limit, - .get_current_limit = da9063_get_current_limit, + .set_current_limit = regulator_set_current_limit_regmap, + .get_current_limit = regulator_get_current_limit_regmap, .set_mode = da9063_buck_set_mode, .get_mode = da9063_buck_get_mode, .get_status = da9063_buck_get_status, @@ -465,69 +423,61 @@ static const struct regulator_ops da9063_ldo_ops = { static const struct da9063_regulator_info da9063_regulator_info[] = { { DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570, - da9063_buck_a_limits), + da9063_buck_a_limits, + DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK), DA9063_BUCK_COMMON_FIELDS(BCORE1), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), - .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, - DA9063_BCORE1_ILIM_MASK), }, { DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570, - da9063_buck_a_limits), + da9063_buck_a_limits, + DA9063_REG_BUCK_ILIM_C, DA9063_BCORE2_ILIM_MASK), DA9063_BUCK_COMMON_FIELDS(BCORE2), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE2_SEL), - .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, - DA9063_BCORE2_ILIM_MASK), }, { DA9063_BUCK(DA9063, BPRO, 530, 10, 1800, - da9063_buck_a_limits), + da9063_buck_a_limits, + DA9063_REG_BUCK_ILIM_B, DA9063_BPRO_ILIM_MASK), DA9063_BUCK_COMMON_FIELDS(BPRO), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPRO_SEL), - .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_B, - DA9063_BPRO_ILIM_MASK), }, { DA9063_BUCK(DA9063, BMEM, 800, 20, 3340, - da9063_buck_b_limits), + da9063_buck_b_limits, + DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK), DA9063_BUCK_COMMON_FIELDS(BMEM), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), - .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, - DA9063_BMEM_ILIM_MASK), }, { DA9063_BUCK(DA9063, BIO, 800, 20, 3340, - da9063_buck_b_limits), + da9063_buck_b_limits, + DA9063_REG_BUCK_ILIM_A, DA9063_BIO_ILIM_MASK), DA9063_BUCK_COMMON_FIELDS(BIO), .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VBIO_SEL), - .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, - DA9063_BIO_ILIM_MASK), }, { DA9063_BUCK(DA9063, BPERI, 800, 20, 3340, - da9063_buck_b_limits), + da9063_buck_b_limits, + DA9063_REG_BUCK_ILIM_B, DA9063_BPERI_ILIM_MASK), DA9063_BUCK_COMMON_FIELDS(BPERI), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPERI_SEL), - .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_B, - DA9063_BPERI_ILIM_MASK), }, { DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570, - da9063_bcores_merged_limits), + da9063_bcores_merged_limits, + DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK), /* BCORES_MERGED uses the same register fields as BCORE1 */ DA9063_BUCK_COMMON_FIELDS(BCORE1), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), - .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_C, - DA9063_BCORE1_ILIM_MASK), }, { DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340, - da9063_bmem_bio_merged_limits), + da9063_bmem_bio_merged_limits, + DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK), /* BMEM_BIO_MERGED uses the same register fields as BMEM */ DA9063_BUCK_COMMON_FIELDS(BMEM), .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), - .ilimit = BFIELD(DA9063_REG_BUCK_ILIM_A, - DA9063_BMEM_ILIM_MASK), }, { DA9063_LDO(DA9063, LDO3, 900, 20, 3440), @@ -615,9 +565,12 @@ static irqreturn_t da9063_ldo_lim_event(int irq, void *data) if (regl->info->oc_event.reg != DA9063_REG_STATUS_D) continue; - if (BIT(regl->info->oc_event.lsb) & bits) + if (BIT(regl->info->oc_event.lsb) & bits) { + regulator_lock(regl->rdev); regulator_notifier_call_chain(regl->rdev, REGULATOR_EVENT_OVER_CURRENT, NULL); + regulator_unlock(regl->rdev); + } } return IRQ_HANDLED; @@ -861,13 +814,6 @@ static int da9063_regulator_probe(struct platform_device *pdev) return PTR_ERR(regl->suspend_sleep); } - if (regl->info->ilimit.reg) { - regl->ilimit = devm_regmap_field_alloc(&pdev->dev, - da9063->regmap, regl->info->ilimit); - if (IS_ERR(regl->ilimit)) - return PTR_ERR(regl->ilimit); - } - /* Register regulator */ memset(&config, 0, sizeof(config)); config.dev = &pdev->dev; |