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drivers/regulator/da903x.c
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/* * Regulators driver for Dialog Semiconductor DA903x * * Copyright (C) 2006-2008 Marvell International Ltd. * Copyright (C) 2008 Compulab Ltd. * * 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. */ #include <linux/kernel.h> #include <linux/init.h> #include <linux/err.h> |
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#include <linux/module.h> |
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#include <linux/platform_device.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/mfd/da903x.h> /* DA9030 Registers */ #define DA9030_INVAL (-1) #define DA9030_LDO1011 (0x10) #define DA9030_LDO15 (0x11) #define DA9030_LDO1416 (0x12) #define DA9030_LDO1819 (0x13) #define DA9030_LDO17 (0x14) #define DA9030_BUCK2DVM1 (0x15) #define DA9030_BUCK2DVM2 (0x16) #define DA9030_RCTL11 (0x17) #define DA9030_RCTL21 (0x18) #define DA9030_LDO1 (0x90) #define DA9030_LDO23 (0x91) #define DA9030_LDO45 (0x92) #define DA9030_LDO6 (0x93) #define DA9030_LDO78 (0x94) #define DA9030_LDO912 (0x95) #define DA9030_BUCK (0x96) #define DA9030_RCTL12 (0x97) #define DA9030_RCTL22 (0x98) #define DA9030_LDO_UNLOCK (0xa0) #define DA9030_LDO_UNLOCK_MASK (0xe0) #define DA9034_OVER1 (0x10) /* DA9034 Registers */ #define DA9034_INVAL (-1) #define DA9034_OVER2 (0x11) #define DA9034_OVER3 (0x12) #define DA9034_LDO643 (0x13) #define DA9034_LDO987 (0x14) #define DA9034_LDO1110 (0x15) #define DA9034_LDO1312 (0x16) #define DA9034_LDO1514 (0x17) #define DA9034_VCC1 (0x20) #define DA9034_ADTV1 (0x23) #define DA9034_ADTV2 (0x24) #define DA9034_AVRC (0x25) #define DA9034_CDTV1 (0x26) #define DA9034_CDTV2 (0x27) #define DA9034_CVRC (0x28) #define DA9034_SDTV1 (0x29) #define DA9034_SDTV2 (0x2a) #define DA9034_SVRC (0x2b) #define DA9034_MDTV1 (0x32) #define DA9034_MDTV2 (0x33) #define DA9034_MVRC (0x34) |
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/* DA9035 Registers. DA9034 Registers are comptabile to DA9035. */ #define DA9035_OVER3 (0x12) #define DA9035_VCC2 (0x1f) #define DA9035_3DTV1 (0x2c) #define DA9035_3DTV2 (0x2d) #define DA9035_3VRC (0x2e) #define DA9035_AUTOSKIP (0x2f) |
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struct da903x_regulator_info { struct regulator_desc desc; int min_uV; int max_uV; int step_uV; int vol_reg; int vol_shift; int vol_nbits; int update_reg; int update_bit; int enable_reg; int enable_bit; }; |
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static int da9034_ldo12_data[] = { 1700, 1750, 1800, 1850, 1900, 1950, 2000, 2050, 2700, 2750, 2800, 2850, 2900, 2950, 3000, 3050 }; |
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static inline struct device *to_da903x_dev(struct regulator_dev *rdev) { return rdev_get_dev(rdev)->parent->parent; } |
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static inline int check_range(struct da903x_regulator_info *info, int min_uV, int max_uV) { if (min_uV < info->min_uV || min_uV > info->max_uV) return -EINVAL; return 0; } /* DA9030/DA9034 common operations */ static int da903x_set_ldo_voltage(struct regulator_dev *rdev, |
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int min_uV, int max_uV, unsigned *selector) |
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{ struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
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struct device *da9034_dev = to_da903x_dev(rdev); |
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uint8_t val, mask; if (check_range(info, min_uV, max_uV)) { |
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pr_err("invalid voltage range (%d, %d) uV ", min_uV, max_uV); |
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return -EINVAL; } val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV; |
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*selector = val; |
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val <<= info->vol_shift; mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; return da903x_update(da9034_dev, info->vol_reg, val, mask); } static int da903x_get_voltage(struct regulator_dev *rdev) { struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
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struct device *da9034_dev = to_da903x_dev(rdev); |
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uint8_t val, mask; int ret; ret = da903x_read(da9034_dev, info->vol_reg, &val); if (ret) return ret; mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; val = (val & mask) >> info->vol_shift; return info->min_uV + info->step_uV * val; } static int da903x_enable(struct regulator_dev *rdev) { struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
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struct device *da9034_dev = to_da903x_dev(rdev); |
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return da903x_set_bits(da9034_dev, info->enable_reg, 1 << info->enable_bit); } static int da903x_disable(struct regulator_dev *rdev) { struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
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struct device *da9034_dev = to_da903x_dev(rdev); |
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return da903x_clr_bits(da9034_dev, info->enable_reg, 1 << info->enable_bit); } static int da903x_is_enabled(struct regulator_dev *rdev) { struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
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struct device *da9034_dev = to_da903x_dev(rdev); |
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uint8_t reg_val; int ret; ret = da903x_read(da9034_dev, info->enable_reg, ®_val); if (ret) return ret; |
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return !!(reg_val & (1 << info->enable_bit)); |
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} |
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static int da903x_list_voltage(struct regulator_dev *rdev, unsigned selector) { struct da903x_regulator_info *info = rdev_get_drvdata(rdev); int ret; ret = info->min_uV + info->step_uV * selector; if (ret > info->max_uV) return -EINVAL; return ret; } |
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/* DA9030 specific operations */ static int da9030_set_ldo1_15_voltage(struct regulator_dev *rdev, |
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int min_uV, int max_uV, unsigned *selector) |
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{ struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
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struct device *da903x_dev = to_da903x_dev(rdev); |
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uint8_t val, mask; int ret; if (check_range(info, min_uV, max_uV)) { |
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pr_err("invalid voltage range (%d, %d) uV ", min_uV, max_uV); |
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return -EINVAL; } val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV; |
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*selector = val; |
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val <<= info->vol_shift; mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; val |= DA9030_LDO_UNLOCK; /* have to set UNLOCK bits */ mask |= DA9030_LDO_UNLOCK_MASK; /* write twice */ ret = da903x_update(da903x_dev, info->vol_reg, val, mask); if (ret) return ret; return da903x_update(da903x_dev, info->vol_reg, val, mask); } static int da9030_set_ldo14_voltage(struct regulator_dev *rdev, |
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int min_uV, int max_uV, unsigned *selector) |
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{ struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
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struct device *da903x_dev = to_da903x_dev(rdev); |
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uint8_t val, mask; int thresh; if (check_range(info, min_uV, max_uV)) { |
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pr_err("invalid voltage range (%d, %d) uV ", min_uV, max_uV); |
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return -EINVAL; } thresh = (info->max_uV + info->min_uV) / 2; if (min_uV < thresh) { val = (thresh - min_uV + info->step_uV - 1) / info->step_uV; val |= 0x4; } else { val = (min_uV - thresh + info->step_uV - 1) / info->step_uV; } |
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*selector = val; |
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val <<= info->vol_shift; mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; return da903x_update(da903x_dev, info->vol_reg, val, mask); } static int da9030_get_ldo14_voltage(struct regulator_dev *rdev) { struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
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struct device *da903x_dev = to_da903x_dev(rdev); |
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uint8_t val, mask; int ret; ret = da903x_read(da903x_dev, info->vol_reg, &val); if (ret) return ret; mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; val = (val & mask) >> info->vol_shift; if (val & 0x4) return info->min_uV + info->step_uV * (3 - (val & ~0x4)); else return (info->max_uV + info->min_uV) / 2 + info->step_uV * (val & ~0x4); } /* DA9034 specific operations */ static int da9034_set_dvc_voltage(struct regulator_dev *rdev, |
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int min_uV, int max_uV, unsigned *selector) |
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{ struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
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struct device *da9034_dev = to_da903x_dev(rdev); |
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uint8_t val, mask; int ret; if (check_range(info, min_uV, max_uV)) { |
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pr_err("invalid voltage range (%d, %d) uV ", min_uV, max_uV); |
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return -EINVAL; } val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV; |
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*selector = val; |
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val <<= info->vol_shift; mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; ret = da903x_update(da9034_dev, info->vol_reg, val, mask); if (ret) return ret; ret = da903x_set_bits(da9034_dev, info->update_reg, 1 << info->update_bit); return ret; } static int da9034_set_ldo12_voltage(struct regulator_dev *rdev, |
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int min_uV, int max_uV, unsigned *selector) |
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{ struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
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struct device *da9034_dev = to_da903x_dev(rdev); |
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uint8_t val, mask; if (check_range(info, min_uV, max_uV)) { |
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pr_err("invalid voltage range (%d, %d) uV ", min_uV, max_uV); |
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return -EINVAL; } val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV; |
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val = (val >= 20) ? val - 12 : ((val > 7) ? 8 : val); |
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*selector = val; |
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val <<= info->vol_shift; mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; return da903x_update(da9034_dev, info->vol_reg, val, mask); } static int da9034_get_ldo12_voltage(struct regulator_dev *rdev) { struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
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struct device *da9034_dev = to_da903x_dev(rdev); |
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uint8_t val, mask; int ret; ret = da903x_read(da9034_dev, info->vol_reg, &val); if (ret) return ret; mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; val = (val & mask) >> info->vol_shift; if (val >= 8) return 2700000 + info->step_uV * (val - 8); return info->min_uV + info->step_uV * val; } |
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static int da9034_list_ldo12_voltage(struct regulator_dev *rdev, unsigned selector) { |
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if (selector >= ARRAY_SIZE(da9034_ldo12_data)) |
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return -EINVAL; return da9034_ldo12_data[selector] * 1000; } |
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static struct regulator_ops da903x_regulator_ldo_ops = { .set_voltage = da903x_set_ldo_voltage, .get_voltage = da903x_get_voltage, |
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.list_voltage = da903x_list_voltage, |
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.enable = da903x_enable, .disable = da903x_disable, .is_enabled = da903x_is_enabled, }; /* NOTE: this is dedicated for the insane DA9030 LDO14 */ static struct regulator_ops da9030_regulator_ldo14_ops = { .set_voltage = da9030_set_ldo14_voltage, .get_voltage = da9030_get_ldo14_voltage, |
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.list_voltage = da903x_list_voltage, |
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.enable = da903x_enable, .disable = da903x_disable, .is_enabled = da903x_is_enabled, }; /* NOTE: this is dedicated for the DA9030 LDO1 and LDO15 that have locks */ static struct regulator_ops da9030_regulator_ldo1_15_ops = { .set_voltage = da9030_set_ldo1_15_voltage, .get_voltage = da903x_get_voltage, |
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.list_voltage = da903x_list_voltage, |
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.enable = da903x_enable, .disable = da903x_disable, .is_enabled = da903x_is_enabled, }; static struct regulator_ops da9034_regulator_dvc_ops = { .set_voltage = da9034_set_dvc_voltage, .get_voltage = da903x_get_voltage, |
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.list_voltage = da903x_list_voltage, |
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.enable = da903x_enable, .disable = da903x_disable, .is_enabled = da903x_is_enabled, }; /* NOTE: this is dedicated for the insane LDO12 */ static struct regulator_ops da9034_regulator_ldo12_ops = { .set_voltage = da9034_set_ldo12_voltage, .get_voltage = da9034_get_ldo12_voltage, |
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.list_voltage = da9034_list_ldo12_voltage, |
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.enable = da903x_enable, .disable = da903x_disable, .is_enabled = da903x_is_enabled, }; #define DA903x_LDO(_pmic, _id, min, max, step, vreg, shift, nbits, ereg, ebit) \ { \ .desc = { \ .name = "LDO" #_id, \ .ops = &da903x_regulator_ldo_ops, \ .type = REGULATOR_VOLTAGE, \ .id = _pmic##_ID_LDO##_id, \ |
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.n_voltages = (step) ? ((max - min) / step + 1) : 1, \ |
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.owner = THIS_MODULE, \ }, \ .min_uV = (min) * 1000, \ .max_uV = (max) * 1000, \ .step_uV = (step) * 1000, \ .vol_reg = _pmic##_##vreg, \ .vol_shift = (shift), \ .vol_nbits = (nbits), \ .enable_reg = _pmic##_##ereg, \ .enable_bit = (ebit), \ } |
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#define DA903x_DVC(_pmic, _id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ |
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{ \ .desc = { \ .name = #_id, \ .ops = &da9034_regulator_dvc_ops, \ .type = REGULATOR_VOLTAGE, \ |
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.id = _pmic##_ID_##_id, \ |
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.n_voltages = (step) ? ((max - min) / step + 1) : 1, \ |
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.owner = THIS_MODULE, \ }, \ .min_uV = (min) * 1000, \ .max_uV = (max) * 1000, \ .step_uV = (step) * 1000, \ |
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.vol_reg = _pmic##_##vreg, \ |
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.vol_shift = (0), \ .vol_nbits = (nbits), \ |
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.update_reg = _pmic##_##ureg, \ |
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.update_bit = (ubit), \ |
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.enable_reg = _pmic##_##ereg, \ |
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.enable_bit = (ebit), \ } |
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#define DA9034_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \ DA903x_LDO(DA9034, _id, min, max, step, vreg, shift, nbits, ereg, ebit) #define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \ DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit) |
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#define DA9030_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ DA903x_DVC(DA9030, _id, min, max, step, vreg, nbits, ureg, ubit, \ ereg, ebit) #define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ DA903x_DVC(DA9034, _id, min, max, step, vreg, nbits, ureg, ubit, \ ereg, ebit) #define DA9035_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ DA903x_DVC(DA9035, _id, min, max, step, vreg, nbits, ureg, ubit, \ ereg, ebit) |
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static struct da903x_regulator_info da903x_regulator_info[] = { /* DA9030 */ |
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DA9030_DVC(BUCK2, 850, 1625, 25, BUCK2DVM1, 5, BUCK2DVM1, 7, RCTL11, 0), |
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DA9030_LDO( 1, 1200, 3200, 100, LDO1, 0, 5, RCTL12, 1), DA9030_LDO( 2, 1800, 3200, 100, LDO23, 0, 4, RCTL12, 2), DA9030_LDO( 3, 1800, 3200, 100, LDO23, 4, 4, RCTL12, 3), DA9030_LDO( 4, 1800, 3200, 100, LDO45, 0, 4, RCTL12, 4), DA9030_LDO( 5, 1800, 3200, 100, LDO45, 4, 4, RCTL12, 5), DA9030_LDO( 6, 1800, 3200, 100, LDO6, 0, 4, RCTL12, 6), DA9030_LDO( 7, 1800, 3200, 100, LDO78, 0, 4, RCTL12, 7), DA9030_LDO( 8, 1800, 3200, 100, LDO78, 4, 4, RCTL22, 0), DA9030_LDO( 9, 1800, 3200, 100, LDO912, 0, 4, RCTL22, 1), DA9030_LDO(10, 1800, 3200, 100, LDO1011, 0, 4, RCTL22, 2), DA9030_LDO(11, 1800, 3200, 100, LDO1011, 4, 4, RCTL22, 3), DA9030_LDO(12, 1800, 3200, 100, LDO912, 4, 4, RCTL22, 4), DA9030_LDO(14, 2760, 2940, 30, LDO1416, 0, 3, RCTL11, 4), DA9030_LDO(15, 1100, 2650, 50, LDO15, 0, 5, RCTL11, 5), DA9030_LDO(16, 1100, 2650, 50, LDO1416, 3, 5, RCTL11, 6), DA9030_LDO(17, 1800, 3200, 100, LDO17, 0, 4, RCTL11, 7), DA9030_LDO(18, 1800, 3200, 100, LDO1819, 0, 4, RCTL21, 2), DA9030_LDO(19, 1800, 3200, 100, LDO1819, 4, 4, RCTL21, 1), DA9030_LDO(13, 2100, 2100, 0, INVAL, 0, 0, RCTL11, 3), /* fixed @2.1V */ /* DA9034 */ |
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DA9034_DVC(BUCK1, 725, 1500, 25, ADTV2, 5, VCC1, 0, OVER1, 0), DA9034_DVC(BUCK2, 725, 1500, 25, CDTV2, 5, VCC1, 2, OVER1, 1), DA9034_DVC(LDO2, 725, 1500, 25, SDTV2, 5, VCC1, 4, OVER1, 2), |
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DA9034_DVC(LDO1, 1700, 2075, 25, MDTV1, 4, VCC1, 6, OVER3, 4), DA9034_LDO( 3, 1800, 3300, 100, LDO643, 0, 4, OVER3, 5), DA9034_LDO( 4, 1800, 2900,1100, LDO643, 4, 1, OVER3, 6), DA9034_LDO( 6, 2500, 2850, 50, LDO643, 5, 3, OVER2, 0), DA9034_LDO( 7, 2700, 3050, 50, LDO987, 0, 3, OVER2, 1), DA9034_LDO( 8, 2700, 2850, 50, LDO987, 3, 2, OVER2, 2), DA9034_LDO( 9, 2700, 3050, 50, LDO987, 5, 3, OVER2, 3), DA9034_LDO(10, 2700, 3050, 50, LDO1110, 0, 3, OVER2, 4), DA9034_LDO(11, 1800, 3300, 100, LDO1110, 4, 4, OVER2, 5), DA9034_LDO(12, 1700, 3050, 50, LDO1312, 0, 4, OVER3, 6), DA9034_LDO(13, 1800, 3300, 100, LDO1312, 4, 4, OVER2, 7), DA9034_LDO(14, 1800, 3300, 100, LDO1514, 0, 4, OVER3, 0), DA9034_LDO(15, 1800, 3300, 100, LDO1514, 4, 4, OVER3, 1), DA9034_LDO(5, 3100, 3100, 0, INVAL, 0, 0, OVER3, 7), /* fixed @3.1V */ |
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/* DA9035 */ DA9035_DVC(BUCK3, 1800, 2200, 100, 3DTV1, 3, VCC2, 0, OVER3, 3), |
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}; static inline struct da903x_regulator_info *find_regulator_info(int id) { struct da903x_regulator_info *ri; int i; for (i = 0; i < ARRAY_SIZE(da903x_regulator_info); i++) { ri = &da903x_regulator_info[i]; if (ri->desc.id == id) return ri; } return NULL; } static int __devinit da903x_regulator_probe(struct platform_device *pdev) { struct da903x_regulator_info *ri = NULL; struct regulator_dev *rdev; ri = find_regulator_info(pdev->id); if (ri == NULL) { dev_err(&pdev->dev, "invalid regulator ID specified "); return -EINVAL; } /* Workaround for the weird LDO12 voltage setting */ |
c1b60873c regulator: suppor... |
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if (ri->desc.id == DA9034_ID_LDO12) { |
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ri->desc.ops = &da9034_regulator_ldo12_ops; |
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ri->desc.n_voltages = ARRAY_SIZE(da9034_ldo12_data); } |
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if (ri->desc.id == DA9030_ID_LDO14) ri->desc.ops = &da9030_regulator_ldo14_ops; if (ri->desc.id == DA9030_ID_LDO1 || ri->desc.id == DA9030_ID_LDO15) ri->desc.ops = &da9030_regulator_ldo1_15_ops; |
0527100fd regulator: Pass r... |
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rdev = regulator_register(&ri->desc, &pdev->dev, |
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pdev->dev.platform_data, ri, NULL); |
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if (IS_ERR(rdev)) { dev_err(&pdev->dev, "failed to register regulator %s ", ri->desc.name); return PTR_ERR(rdev); } platform_set_drvdata(pdev, rdev); return 0; } static int __devexit da903x_regulator_remove(struct platform_device *pdev) { struct regulator_dev *rdev = platform_get_drvdata(pdev); regulator_unregister(rdev); return 0; } static struct platform_driver da903x_regulator_driver = { .driver = { .name = "da903x-regulator", .owner = THIS_MODULE, }, .probe = da903x_regulator_probe, |
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.remove = __devexit_p(da903x_regulator_remove), |
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}; static int __init da903x_regulator_init(void) { return platform_driver_register(&da903x_regulator_driver); } |
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subsys_initcall(da903x_regulator_init); |
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static void __exit da903x_regulator_exit(void) { platform_driver_unregister(&da903x_regulator_driver); } module_exit(da903x_regulator_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>" "Mike Rapoport <mike@compulab.co.il>"); MODULE_DESCRIPTION("Regulator Driver for Dialog Semiconductor DA903X PMIC"); MODULE_ALIAS("platform:da903x-regulator"); |