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![Wolfram Sang](/assets/img/avatar_default.png)
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
745 lines
18 KiB
C
745 lines
18 KiB
C
/*
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* drivers/regulator/ab3100.c
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*
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* Copyright (C) 2008-2009 ST-Ericsson AB
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* License terms: GNU General Public License (GPL) version 2
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* Low-level control of the AB3100 IC Low Dropout (LDO)
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* regulators, external regulator and buck converter
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* Author: Mattias Wallin <mattias.wallin@stericsson.com>
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* Author: Linus Walleij <linus.walleij@stericsson.com>
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/driver.h>
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#include <linux/mfd/ab3100.h>
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#include <linux/mfd/abx500.h>
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#include <linux/of.h>
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#include <linux/regulator/of_regulator.h>
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/* LDO registers and some handy masking definitions for AB3100 */
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#define AB3100_LDO_A 0x40
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#define AB3100_LDO_C 0x41
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#define AB3100_LDO_D 0x42
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#define AB3100_LDO_E 0x43
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#define AB3100_LDO_E_SLEEP 0x44
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#define AB3100_LDO_F 0x45
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#define AB3100_LDO_G 0x46
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#define AB3100_LDO_H 0x47
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#define AB3100_LDO_H_SLEEP_MODE 0
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#define AB3100_LDO_H_SLEEP_EN 2
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#define AB3100_LDO_ON 4
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#define AB3100_LDO_H_VSEL_AC 5
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#define AB3100_LDO_K 0x48
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#define AB3100_LDO_EXT 0x49
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#define AB3100_BUCK 0x4A
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#define AB3100_BUCK_SLEEP 0x4B
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#define AB3100_REG_ON_MASK 0x10
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/**
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* struct ab3100_regulator
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* A struct passed around the individual regulator functions
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* @platform_device: platform device holding this regulator
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* @dev: handle to the device
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* @plfdata: AB3100 platform data passed in at probe time
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* @regreg: regulator register number in the AB3100
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*/
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struct ab3100_regulator {
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struct regulator_dev *rdev;
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struct device *dev;
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struct ab3100_platform_data *plfdata;
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u8 regreg;
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};
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/* The order in which registers are initialized */
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static const u8 ab3100_reg_init_order[AB3100_NUM_REGULATORS+2] = {
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AB3100_LDO_A,
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AB3100_LDO_C,
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AB3100_LDO_E,
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AB3100_LDO_E_SLEEP,
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AB3100_LDO_F,
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AB3100_LDO_G,
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AB3100_LDO_H,
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AB3100_LDO_K,
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AB3100_LDO_EXT,
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AB3100_BUCK,
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AB3100_BUCK_SLEEP,
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AB3100_LDO_D,
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};
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/* Preset (hardware defined) voltages for these regulators */
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#define LDO_A_VOLTAGE 2750000
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#define LDO_C_VOLTAGE 2650000
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#define LDO_D_VOLTAGE 2650000
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static const unsigned int ldo_e_buck_typ_voltages[] = {
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1800000,
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1400000,
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1300000,
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1200000,
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1100000,
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1050000,
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900000,
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};
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static const unsigned int ldo_f_typ_voltages[] = {
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1800000,
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1400000,
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1300000,
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1200000,
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1100000,
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1050000,
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2500000,
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2650000,
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};
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static const unsigned int ldo_g_typ_voltages[] = {
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2850000,
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2750000,
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1800000,
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1500000,
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};
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static const unsigned int ldo_h_typ_voltages[] = {
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2750000,
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1800000,
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1500000,
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1200000,
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};
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static const unsigned int ldo_k_typ_voltages[] = {
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2750000,
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1800000,
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};
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/* The regulator devices */
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static struct ab3100_regulator
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ab3100_regulators[AB3100_NUM_REGULATORS] = {
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{
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.regreg = AB3100_LDO_A,
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},
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{
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.regreg = AB3100_LDO_C,
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},
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{
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.regreg = AB3100_LDO_D,
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},
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{
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.regreg = AB3100_LDO_E,
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},
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{
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.regreg = AB3100_LDO_F,
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},
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{
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.regreg = AB3100_LDO_G,
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},
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{
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.regreg = AB3100_LDO_H,
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},
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{
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.regreg = AB3100_LDO_K,
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},
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{
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.regreg = AB3100_LDO_EXT,
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/* No voltages for the external regulator */
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},
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{
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.regreg = AB3100_BUCK,
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},
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};
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/*
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* General functions for enable, disable and is_enabled used for
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* LDO: A,C,E,F,G,H,K,EXT and BUCK
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*/
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static int ab3100_enable_regulator(struct regulator_dev *reg)
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{
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struct ab3100_regulator *abreg = rdev_get_drvdata(reg);
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int err;
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u8 regval;
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err = abx500_get_register_interruptible(abreg->dev, 0, abreg->regreg,
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®val);
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if (err) {
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dev_warn(®->dev, "failed to get regid %d value\n",
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abreg->regreg);
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return err;
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}
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/* The regulator is already on, no reason to go further */
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if (regval & AB3100_REG_ON_MASK)
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return 0;
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regval |= AB3100_REG_ON_MASK;
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err = abx500_set_register_interruptible(abreg->dev, 0, abreg->regreg,
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regval);
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if (err) {
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dev_warn(®->dev, "failed to set regid %d value\n",
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abreg->regreg);
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return err;
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}
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return 0;
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}
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static int ab3100_disable_regulator(struct regulator_dev *reg)
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{
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struct ab3100_regulator *abreg = rdev_get_drvdata(reg);
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int err;
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u8 regval;
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/*
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* LDO D is a special regulator. When it is disabled, the entire
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* system is shut down. So this is handled specially.
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*/
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pr_info("Called ab3100_disable_regulator\n");
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if (abreg->regreg == AB3100_LDO_D) {
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dev_info(®->dev, "disabling LDO D - shut down system\n");
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/* Setting LDO D to 0x00 cuts the power to the SoC */
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return abx500_set_register_interruptible(abreg->dev, 0,
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AB3100_LDO_D, 0x00U);
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}
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/*
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* All other regulators are handled here
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*/
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err = abx500_get_register_interruptible(abreg->dev, 0, abreg->regreg,
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®val);
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if (err) {
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dev_err(®->dev, "unable to get register 0x%x\n",
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abreg->regreg);
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return err;
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}
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regval &= ~AB3100_REG_ON_MASK;
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return abx500_set_register_interruptible(abreg->dev, 0, abreg->regreg,
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regval);
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}
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static int ab3100_is_enabled_regulator(struct regulator_dev *reg)
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{
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struct ab3100_regulator *abreg = rdev_get_drvdata(reg);
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u8 regval;
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int err;
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err = abx500_get_register_interruptible(abreg->dev, 0, abreg->regreg,
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®val);
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if (err) {
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dev_err(®->dev, "unable to get register 0x%x\n",
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abreg->regreg);
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return err;
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}
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return regval & AB3100_REG_ON_MASK;
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}
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static int ab3100_get_voltage_regulator(struct regulator_dev *reg)
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{
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struct ab3100_regulator *abreg = rdev_get_drvdata(reg);
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u8 regval;
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int err;
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/*
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* For variable types, read out setting and index into
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* supplied voltage list.
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*/
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err = abx500_get_register_interruptible(abreg->dev, 0,
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abreg->regreg, ®val);
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if (err) {
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dev_warn(®->dev,
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"failed to get regulator value in register %02x\n",
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abreg->regreg);
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return err;
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}
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/* The 3 highest bits index voltages */
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regval &= 0xE0;
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regval >>= 5;
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if (regval >= reg->desc->n_voltages) {
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dev_err(®->dev,
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"regulator register %02x contains an illegal voltage setting\n",
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abreg->regreg);
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return -EINVAL;
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}
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return reg->desc->volt_table[regval];
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}
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static int ab3100_set_voltage_regulator_sel(struct regulator_dev *reg,
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unsigned selector)
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{
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struct ab3100_regulator *abreg = rdev_get_drvdata(reg);
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u8 regval;
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int err;
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err = abx500_get_register_interruptible(abreg->dev, 0,
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abreg->regreg, ®val);
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if (err) {
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dev_warn(®->dev,
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"failed to get regulator register %02x\n",
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abreg->regreg);
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return err;
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}
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/* The highest three bits control the variable regulators */
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regval &= ~0xE0;
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regval |= (selector << 5);
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err = abx500_set_register_interruptible(abreg->dev, 0,
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abreg->regreg, regval);
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if (err)
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dev_warn(®->dev, "failed to set regulator register %02x\n",
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abreg->regreg);
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return err;
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}
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static int ab3100_set_suspend_voltage_regulator(struct regulator_dev *reg,
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int uV)
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{
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struct ab3100_regulator *abreg = rdev_get_drvdata(reg);
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u8 regval;
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int err;
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int bestindex;
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u8 targetreg;
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if (abreg->regreg == AB3100_LDO_E)
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targetreg = AB3100_LDO_E_SLEEP;
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else if (abreg->regreg == AB3100_BUCK)
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targetreg = AB3100_BUCK_SLEEP;
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else
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return -EINVAL;
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/* LDO E and BUCK have special suspend voltages you can set */
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bestindex = regulator_map_voltage_iterate(reg, uV, uV);
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err = abx500_get_register_interruptible(abreg->dev, 0,
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targetreg, ®val);
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if (err) {
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dev_warn(®->dev,
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"failed to get regulator register %02x\n",
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targetreg);
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return err;
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}
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/* The highest three bits control the variable regulators */
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regval &= ~0xE0;
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regval |= (bestindex << 5);
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err = abx500_set_register_interruptible(abreg->dev, 0,
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targetreg, regval);
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if (err)
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dev_warn(®->dev, "failed to set regulator register %02x\n",
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abreg->regreg);
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return err;
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}
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/*
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* The external regulator can just define a fixed voltage.
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*/
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static int ab3100_get_voltage_regulator_external(struct regulator_dev *reg)
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{
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struct ab3100_regulator *abreg = rdev_get_drvdata(reg);
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if (abreg->plfdata)
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return abreg->plfdata->external_voltage;
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else
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/* TODO: encode external voltage into device tree */
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return 0;
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}
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static struct regulator_ops regulator_ops_fixed = {
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.list_voltage = regulator_list_voltage_linear,
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.enable = ab3100_enable_regulator,
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.disable = ab3100_disable_regulator,
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.is_enabled = ab3100_is_enabled_regulator,
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};
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static struct regulator_ops regulator_ops_variable = {
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.enable = ab3100_enable_regulator,
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.disable = ab3100_disable_regulator,
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.is_enabled = ab3100_is_enabled_regulator,
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.get_voltage = ab3100_get_voltage_regulator,
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.set_voltage_sel = ab3100_set_voltage_regulator_sel,
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.list_voltage = regulator_list_voltage_table,
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};
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static struct regulator_ops regulator_ops_variable_sleepable = {
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.enable = ab3100_enable_regulator,
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.disable = ab3100_disable_regulator,
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.is_enabled = ab3100_is_enabled_regulator,
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.get_voltage = ab3100_get_voltage_regulator,
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.set_voltage_sel = ab3100_set_voltage_regulator_sel,
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.set_suspend_voltage = ab3100_set_suspend_voltage_regulator,
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.list_voltage = regulator_list_voltage_table,
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};
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/*
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* LDO EXT is an external regulator so it is really
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* not possible to set any voltage locally here, AB3100
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* is an on/off switch plain an simple. The external
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* voltage is defined in the board set-up if any.
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*/
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static struct regulator_ops regulator_ops_external = {
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.enable = ab3100_enable_regulator,
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.disable = ab3100_disable_regulator,
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.is_enabled = ab3100_is_enabled_regulator,
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.get_voltage = ab3100_get_voltage_regulator_external,
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};
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static struct regulator_desc
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ab3100_regulator_desc[AB3100_NUM_REGULATORS] = {
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{
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.name = "LDO_A",
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.id = AB3100_LDO_A,
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.ops = ®ulator_ops_fixed,
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.n_voltages = 1,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.min_uV = LDO_A_VOLTAGE,
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.enable_time = 200,
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},
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{
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.name = "LDO_C",
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.id = AB3100_LDO_C,
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.ops = ®ulator_ops_fixed,
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.n_voltages = 1,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.min_uV = LDO_C_VOLTAGE,
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.enable_time = 200,
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},
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{
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.name = "LDO_D",
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.id = AB3100_LDO_D,
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.ops = ®ulator_ops_fixed,
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.n_voltages = 1,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.min_uV = LDO_D_VOLTAGE,
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.enable_time = 200,
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},
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{
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.name = "LDO_E",
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.id = AB3100_LDO_E,
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.ops = ®ulator_ops_variable_sleepable,
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.n_voltages = ARRAY_SIZE(ldo_e_buck_typ_voltages),
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.volt_table = ldo_e_buck_typ_voltages,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.enable_time = 200,
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},
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{
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.name = "LDO_F",
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.id = AB3100_LDO_F,
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.ops = ®ulator_ops_variable,
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.n_voltages = ARRAY_SIZE(ldo_f_typ_voltages),
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.volt_table = ldo_f_typ_voltages,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.enable_time = 600,
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},
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{
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.name = "LDO_G",
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.id = AB3100_LDO_G,
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.ops = ®ulator_ops_variable,
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.n_voltages = ARRAY_SIZE(ldo_g_typ_voltages),
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.volt_table = ldo_g_typ_voltages,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.enable_time = 400,
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},
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{
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.name = "LDO_H",
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.id = AB3100_LDO_H,
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.ops = ®ulator_ops_variable,
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.n_voltages = ARRAY_SIZE(ldo_h_typ_voltages),
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.volt_table = ldo_h_typ_voltages,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.enable_time = 200,
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},
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{
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.name = "LDO_K",
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.id = AB3100_LDO_K,
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.ops = ®ulator_ops_variable,
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.n_voltages = ARRAY_SIZE(ldo_k_typ_voltages),
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.volt_table = ldo_k_typ_voltages,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.enable_time = 200,
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},
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{
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.name = "LDO_EXT",
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.id = AB3100_LDO_EXT,
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.ops = ®ulator_ops_external,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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},
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{
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.name = "BUCK",
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.id = AB3100_BUCK,
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.ops = ®ulator_ops_variable_sleepable,
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.n_voltages = ARRAY_SIZE(ldo_e_buck_typ_voltages),
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.volt_table = ldo_e_buck_typ_voltages,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.enable_time = 1000,
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},
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};
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static int ab3100_regulator_register(struct platform_device *pdev,
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struct ab3100_platform_data *plfdata,
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struct regulator_init_data *init_data,
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struct device_node *np,
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unsigned long id)
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{
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struct regulator_desc *desc;
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struct ab3100_regulator *reg;
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struct regulator_dev *rdev;
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struct regulator_config config = { };
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int err, i;
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|
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for (i = 0; i < AB3100_NUM_REGULATORS; i++) {
|
|
desc = &ab3100_regulator_desc[i];
|
|
if (desc->id == id)
|
|
break;
|
|
}
|
|
if (desc->id != id)
|
|
return -ENODEV;
|
|
|
|
/* Same index used for this array */
|
|
reg = &ab3100_regulators[i];
|
|
|
|
/*
|
|
* Initialize per-regulator struct.
|
|
* Inherit platform data, this comes down from the
|
|
* i2c boarddata, from the machine. So if you want to
|
|
* see what it looks like for a certain machine, go
|
|
* into the machine I2C setup.
|
|
*/
|
|
reg->dev = &pdev->dev;
|
|
if (plfdata) {
|
|
reg->plfdata = plfdata;
|
|
config.init_data = &plfdata->reg_constraints[i];
|
|
} else if (np) {
|
|
config.of_node = np;
|
|
config.init_data = init_data;
|
|
}
|
|
config.dev = &pdev->dev;
|
|
config.driver_data = reg;
|
|
|
|
rdev = devm_regulator_register(&pdev->dev, desc, &config);
|
|
if (IS_ERR(rdev)) {
|
|
err = PTR_ERR(rdev);
|
|
dev_err(&pdev->dev,
|
|
"%s: failed to register regulator %s err %d\n",
|
|
__func__, desc->name,
|
|
err);
|
|
return err;
|
|
}
|
|
|
|
/* Then set a pointer back to the registered regulator */
|
|
reg->rdev = rdev;
|
|
return 0;
|
|
}
|
|
|
|
static struct of_regulator_match ab3100_regulator_matches[] = {
|
|
{ .name = "ab3100_ldo_a", .driver_data = (void *) AB3100_LDO_A, },
|
|
{ .name = "ab3100_ldo_c", .driver_data = (void *) AB3100_LDO_C, },
|
|
{ .name = "ab3100_ldo_d", .driver_data = (void *) AB3100_LDO_D, },
|
|
{ .name = "ab3100_ldo_e", .driver_data = (void *) AB3100_LDO_E, },
|
|
{ .name = "ab3100_ldo_f", .driver_data = (void *) AB3100_LDO_F },
|
|
{ .name = "ab3100_ldo_g", .driver_data = (void *) AB3100_LDO_G },
|
|
{ .name = "ab3100_ldo_h", .driver_data = (void *) AB3100_LDO_H },
|
|
{ .name = "ab3100_ldo_k", .driver_data = (void *) AB3100_LDO_K },
|
|
{ .name = "ab3100_ext", .driver_data = (void *) AB3100_LDO_EXT },
|
|
{ .name = "ab3100_buck", .driver_data = (void *) AB3100_BUCK },
|
|
};
|
|
|
|
/*
|
|
* Initial settings of ab3100 registers.
|
|
* Common for below LDO regulator settings are that
|
|
* bit 7-5 controls voltage. Bit 4 turns regulator ON(1) or OFF(0).
|
|
* Bit 3-2 controls sleep enable and bit 1-0 controls sleep mode.
|
|
*/
|
|
/* LDO_A 0x16: 2.75V, ON, SLEEP_A, SLEEP OFF GND */
|
|
#define LDO_A_SETTING 0x16
|
|
/* LDO_C 0x10: 2.65V, ON, SLEEP_A or B, SLEEP full power */
|
|
#define LDO_C_SETTING 0x10
|
|
/* LDO_D 0x10: 2.65V, ON, sleep mode not used */
|
|
#define LDO_D_SETTING 0x10
|
|
/* LDO_E 0x10: 1.8V, ON, SLEEP_A or B, SLEEP full power */
|
|
#define LDO_E_SETTING 0x10
|
|
/* LDO_E SLEEP 0x00: 1.8V, not used, SLEEP_A or B, not used */
|
|
#define LDO_E_SLEEP_SETTING 0x00
|
|
/* LDO_F 0xD0: 2.5V, ON, SLEEP_A or B, SLEEP full power */
|
|
#define LDO_F_SETTING 0xD0
|
|
/* LDO_G 0x00: 2.85V, OFF, SLEEP_A or B, SLEEP full power */
|
|
#define LDO_G_SETTING 0x00
|
|
/* LDO_H 0x18: 2.75V, ON, SLEEP_B, SLEEP full power */
|
|
#define LDO_H_SETTING 0x18
|
|
/* LDO_K 0x00: 2.75V, OFF, SLEEP_A or B, SLEEP full power */
|
|
#define LDO_K_SETTING 0x00
|
|
/* LDO_EXT 0x00: Voltage not set, OFF, not used, not used */
|
|
#define LDO_EXT_SETTING 0x00
|
|
/* BUCK 0x7D: 1.2V, ON, SLEEP_A and B, SLEEP low power */
|
|
#define BUCK_SETTING 0x7D
|
|
/* BUCK SLEEP 0xAC: 1.05V, Not used, SLEEP_A and B, Not used */
|
|
#define BUCK_SLEEP_SETTING 0xAC
|
|
|
|
static const u8 ab3100_reg_initvals[] = {
|
|
LDO_A_SETTING,
|
|
LDO_C_SETTING,
|
|
LDO_E_SETTING,
|
|
LDO_E_SLEEP_SETTING,
|
|
LDO_F_SETTING,
|
|
LDO_G_SETTING,
|
|
LDO_H_SETTING,
|
|
LDO_K_SETTING,
|
|
LDO_EXT_SETTING,
|
|
BUCK_SETTING,
|
|
BUCK_SLEEP_SETTING,
|
|
LDO_D_SETTING,
|
|
};
|
|
|
|
static int ab3100_regulators_remove(struct platform_device *pdev)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < AB3100_NUM_REGULATORS; i++) {
|
|
struct ab3100_regulator *reg = &ab3100_regulators[i];
|
|
|
|
reg->rdev = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ab3100_regulator_of_probe(struct platform_device *pdev, struct device_node *np)
|
|
{
|
|
int err, i;
|
|
|
|
/*
|
|
* Set up the regulator registers, as was previously done with
|
|
* platform data.
|
|
*/
|
|
/* Set up regulators */
|
|
for (i = 0; i < ARRAY_SIZE(ab3100_reg_init_order); i++) {
|
|
err = abx500_set_register_interruptible(&pdev->dev, 0,
|
|
ab3100_reg_init_order[i],
|
|
ab3100_reg_initvals[i]);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "regulator initialization failed with error %d\n",
|
|
err);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ab3100_regulator_matches); i++) {
|
|
err = ab3100_regulator_register(
|
|
pdev, NULL, ab3100_regulator_matches[i].init_data,
|
|
ab3100_regulator_matches[i].of_node,
|
|
(unsigned long)ab3100_regulator_matches[i].driver_data);
|
|
if (err) {
|
|
ab3100_regulators_remove(pdev);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int ab3100_regulators_probe(struct platform_device *pdev)
|
|
{
|
|
struct ab3100_platform_data *plfdata = dev_get_platdata(&pdev->dev);
|
|
struct device_node *np = pdev->dev.of_node;
|
|
int err = 0;
|
|
u8 data;
|
|
int i;
|
|
|
|
/* Check chip state */
|
|
err = abx500_get_register_interruptible(&pdev->dev, 0,
|
|
AB3100_LDO_D, &data);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "could not read initial status of LDO_D\n");
|
|
return err;
|
|
}
|
|
if (data & 0x10)
|
|
dev_notice(&pdev->dev,
|
|
"chip is already in active mode (Warm start)\n");
|
|
else
|
|
dev_notice(&pdev->dev,
|
|
"chip is in inactive mode (Cold start)\n");
|
|
|
|
if (np) {
|
|
err = of_regulator_match(&pdev->dev, np,
|
|
ab3100_regulator_matches,
|
|
ARRAY_SIZE(ab3100_regulator_matches));
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev,
|
|
"Error parsing regulator init data: %d\n", err);
|
|
return err;
|
|
}
|
|
return ab3100_regulator_of_probe(pdev, np);
|
|
}
|
|
|
|
/* Set up regulators */
|
|
for (i = 0; i < ARRAY_SIZE(ab3100_reg_init_order); i++) {
|
|
err = abx500_set_register_interruptible(&pdev->dev, 0,
|
|
ab3100_reg_init_order[i],
|
|
plfdata->reg_initvals[i]);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "regulator initialization failed with error %d\n",
|
|
err);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
/* Register the regulators */
|
|
for (i = 0; i < AB3100_NUM_REGULATORS; i++) {
|
|
struct regulator_desc *desc = &ab3100_regulator_desc[i];
|
|
|
|
err = ab3100_regulator_register(pdev, plfdata, NULL, NULL,
|
|
desc->id);
|
|
if (err) {
|
|
ab3100_regulators_remove(pdev);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver ab3100_regulators_driver = {
|
|
.driver = {
|
|
.name = "ab3100-regulators",
|
|
},
|
|
.probe = ab3100_regulators_probe,
|
|
.remove = ab3100_regulators_remove,
|
|
};
|
|
|
|
static __init int ab3100_regulators_init(void)
|
|
{
|
|
return platform_driver_register(&ab3100_regulators_driver);
|
|
}
|
|
|
|
static __exit void ab3100_regulators_exit(void)
|
|
{
|
|
platform_driver_unregister(&ab3100_regulators_driver);
|
|
}
|
|
|
|
subsys_initcall(ab3100_regulators_init);
|
|
module_exit(ab3100_regulators_exit);
|
|
|
|
MODULE_AUTHOR("Mattias Wallin <mattias.wallin@stericsson.com>");
|
|
MODULE_DESCRIPTION("AB3100 Regulator driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:ab3100-regulators");
|