diff options
Diffstat (limited to 'drivers/regulator/mt6397-regulator.c')
| -rw-r--r-- | drivers/regulator/mt6397-regulator.c | 74 |
1 files changed, 39 insertions, 35 deletions
diff --git a/drivers/regulator/mt6397-regulator.c b/drivers/regulator/mt6397-regulator.c index c6c6aa85e4e8..92a2d92f84f9 100644 --- a/drivers/regulator/mt6397-regulator.c +++ b/drivers/regulator/mt6397-regulator.c @@ -1,16 +1,7 @@ -/* - * Copyright (c) 2014 MediaTek Inc. - * Author: Flora Fu <flora.fu@mediatek.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2014 MediaTek Inc. +// Author: Flora Fu <flora.fu@mediatek.com> #include <linux/module.h> #include <linux/of.h> @@ -22,9 +13,7 @@ #include <linux/regulator/machine.h> #include <linux/regulator/mt6397-regulator.h> #include <linux/regulator/of_regulator.h> - -#define MT6397_BUCK_MODE_AUTO 0 -#define MT6397_BUCK_MODE_FORCE_PWM 1 +#include <dt-bindings/regulator/mediatek,mt6397-regulator.h> /* * MT6397 regulators' information @@ -43,7 +32,6 @@ struct mt6397_regulator_info { u32 vselctrl_mask; u32 modeset_reg; u32 modeset_mask; - u32 modeset_shift; }; #define MT6397_BUCK(match, vreg, min, max, step, volt_ranges, enreg, \ @@ -64,6 +52,7 @@ struct mt6397_regulator_info { .vsel_mask = vosel_mask, \ .enable_reg = enreg, \ .enable_mask = BIT(0), \ + .of_map_mode = mt6397_map_mode, \ }, \ .qi = BIT(13), \ .vselon_reg = voselon, \ @@ -71,7 +60,6 @@ struct mt6397_regulator_info { .vselctrl_mask = BIT(1), \ .modeset_reg = _modeset_reg, \ .modeset_mask = BIT(_modeset_shift), \ - .modeset_shift = _modeset_shift \ } #define MT6397_LDO(match, vreg, ldo_volt_table, enreg, enbit, vosel, \ @@ -111,50 +99,62 @@ struct mt6397_regulator_info { .qi = BIT(15), \ } -static const struct regulator_linear_range buck_volt_range1[] = { +static const struct linear_range buck_volt_range1[] = { REGULATOR_LINEAR_RANGE(700000, 0, 0x7f, 6250), }; -static const struct regulator_linear_range buck_volt_range2[] = { +static const struct linear_range buck_volt_range2[] = { REGULATOR_LINEAR_RANGE(800000, 0, 0x7f, 6250), }; -static const struct regulator_linear_range buck_volt_range3[] = { +static const struct linear_range buck_volt_range3[] = { REGULATOR_LINEAR_RANGE(1500000, 0, 0x1f, 20000), }; -static const u32 ldo_volt_table1[] = { +static const unsigned int ldo_volt_table1[] = { 1500000, 1800000, 2500000, 2800000, }; -static const u32 ldo_volt_table2[] = { +static const unsigned int ldo_volt_table2[] = { 1800000, 3300000, }; -static const u32 ldo_volt_table3[] = { +static const unsigned int ldo_volt_table3[] = { 3000000, 3300000, }; -static const u32 ldo_volt_table4[] = { +static const unsigned int ldo_volt_table4[] = { 1220000, 1300000, 1500000, 1800000, 2500000, 2800000, 3000000, 3300000, }; -static const u32 ldo_volt_table5[] = { +static const unsigned int ldo_volt_table5[] = { 1200000, 1300000, 1500000, 1800000, 2500000, 2800000, 3000000, 3300000, }; -static const u32 ldo_volt_table5_v2[] = { +static const unsigned int ldo_volt_table5_v2[] = { 1200000, 1000000, 1500000, 1800000, 2500000, 2800000, 3000000, 3300000, }; -static const u32 ldo_volt_table6[] = { +static const unsigned int ldo_volt_table6[] = { 1200000, 1300000, 1500000, 1800000, 2500000, 2800000, 3000000, 2000000, }; -static const u32 ldo_volt_table7[] = { +static const unsigned int ldo_volt_table7[] = { 1300000, 1500000, 1800000, 2000000, 2500000, 2800000, 3000000, 3300000, }; +static unsigned int mt6397_map_mode(unsigned int mode) +{ + switch (mode) { + case MT6397_BUCK_MODE_AUTO: + return REGULATOR_MODE_NORMAL; + case MT6397_BUCK_MODE_FORCE_PWM: + return REGULATOR_MODE_FAST; + default: + return REGULATOR_MODE_INVALID; + } +} + static int mt6397_regulator_set_mode(struct regulator_dev *rdev, unsigned int mode) { @@ -173,11 +173,11 @@ static int mt6397_regulator_set_mode(struct regulator_dev *rdev, goto err_mode; } - dev_dbg(&rdev->dev, "mt6397 buck set_mode %#x, %#x, %#x, %#x\n", - info->modeset_reg, info->modeset_mask, - info->modeset_shift, val); + dev_dbg(&rdev->dev, "mt6397 buck set_mode %#x, %#x, %#x\n", + info->modeset_reg, info->modeset_mask, val); + + val <<= ffs(info->modeset_mask) - 1; - val <<= info->modeset_shift; ret = regmap_update_bits(rdev->regmap, info->modeset_reg, info->modeset_mask, val); err_mode: @@ -202,7 +202,10 @@ static unsigned int mt6397_regulator_get_mode(struct regulator_dev *rdev) return ret; } - switch ((regval & info->modeset_mask) >> info->modeset_shift) { + regval &= info->modeset_mask; + regval >>= ffs(info->modeset_mask) - 1; + + switch (regval) { case MT6397_BUCK_MODE_AUTO: return REGULATOR_MODE_NORMAL; case MT6397_BUCK_MODE_FORCE_PWM: @@ -394,7 +397,7 @@ static const struct platform_device_id mt6397_platform_ids[] = { }; MODULE_DEVICE_TABLE(platform, mt6397_platform_ids); -static const struct of_device_id mt6397_of_match[] = { +static const struct of_device_id mt6397_of_match[] __maybe_unused = { { .compatible = "mediatek,mt6397-regulator", }, { /* sentinel */ }, }; @@ -403,6 +406,7 @@ MODULE_DEVICE_TABLE(of, mt6397_of_match); static struct platform_driver mt6397_regulator_driver = { .driver = { .name = "mt6397-regulator", + .probe_type = PROBE_PREFER_ASYNCHRONOUS, .of_match_table = of_match_ptr(mt6397_of_match), }, .probe = mt6397_regulator_probe, |