make mc13783 regulator code generic
move some common functions and micros of mc13783 regulaor driver to a seperate file, which makes it possible for mc13892 to share code. Signed-off-by: Yong Shen <yong.shen@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Yong Shen
Liam Girdwood
Родитель
57c78e359a
Коммит
167e3d8af9
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@ -186,9 +186,13 @@ config REGULATOR_PCAP
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This driver provides support for the voltage regulators of the
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PCAP2 PMIC.
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config REGULATOR_MC13XXX_CORE
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bool
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config REGULATOR_MC13783
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tristate "Support regulators on Freescale MC13783 PMIC"
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depends on MFD_MC13783
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select REGULATOR_MC13XXX_CORE
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help
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Say y here to support the regulators found on the Freescale MC13783
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PMIC.
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@ -30,6 +30,7 @@ obj-$(CONFIG_REGULATOR_DA903X) += da903x.o
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obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
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obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o
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obj-$(CONFIG_REGULATOR_MC13783) += mc13783-regulator.o
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obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o
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obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o
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obj-$(CONFIG_REGULATOR_TPS65023) += tps65023-regulator.o
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@ -1,6 +1,7 @@
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/*
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* Regulator Driver for Freescale MC13783 PMIC
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*
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* Copyright 2010 Yong Shen <yong.shen@linaro.org>
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* Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
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* Copyright 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
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*
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@ -17,6 +18,7 @@
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include "mc13xxx.h"
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#define MC13783_REG_SWITCHERS5 29
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#define MC13783_REG_SWITCHERS5_SW3EN (1 << 20)
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@ -89,16 +91,6 @@
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#define MC13783_REG_POWERMISC_PWGTSPI_M (3 << 15)
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struct mc13783_regulator {
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struct regulator_desc desc;
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int reg;
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int enable_bit;
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int vsel_reg;
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int vsel_shift;
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int vsel_mask;
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int const *voltages;
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};
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/* Voltage Values */
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static const int mc13783_sw3_val[] = {
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5000000, 5000000, 5000000, 5500000,
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@ -175,64 +167,26 @@ static const int mc13783_pwgtdrv_val[] = {
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5500000,
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};
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static struct regulator_ops mc13783_regulator_ops;
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static struct regulator_ops mc13783_fixed_regulator_ops;
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static struct regulator_ops mc13783_gpo_regulator_ops;
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#define MC13783_DEFINE(prefix, _name, _reg, _vsel_reg, _voltages) \
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[MC13783_ ## prefix ## _ ## _name] = { \
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.desc = { \
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.name = #prefix "_" #_name, \
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.n_voltages = ARRAY_SIZE(_voltages), \
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.ops = &mc13783_regulator_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = MC13783_ ## prefix ## _ ## _name, \
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.owner = THIS_MODULE, \
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}, \
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.reg = MC13783_REG_ ## _reg, \
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.enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN, \
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.vsel_reg = MC13783_REG_ ## _vsel_reg, \
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.vsel_shift = MC13783_REG_ ## _vsel_reg ## _ ## _name ## VSEL,\
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.vsel_mask = MC13783_REG_ ## _vsel_reg ## _ ## _name ## VSEL_M,\
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.voltages = _voltages, \
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}
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#define MC13783_DEFINE(prefix, name, reg, vsel_reg, voltages) \
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MC13xxx_DEFINE(MC13783_REG_, name, reg, vsel_reg, voltages, \
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mc13xxx_regulator_ops)
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#define MC13783_FIXED_DEFINE(prefix, _name, _reg, _voltages) \
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[MC13783_ ## prefix ## _ ## _name] = { \
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.desc = { \
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.name = #prefix "_" #_name, \
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.n_voltages = ARRAY_SIZE(_voltages), \
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.ops = &mc13783_fixed_regulator_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = MC13783_ ## prefix ## _ ## _name, \
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.owner = THIS_MODULE, \
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}, \
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.reg = MC13783_REG_ ## _reg, \
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.enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN, \
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.voltages = _voltages, \
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}
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#define MC13783_FIXED_DEFINE(prefix, name, reg, voltages) \
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MC13xxx_FIXED_DEFINE(MC13783_REG_, name, reg, voltages, \
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mc13xxx_fixed_regulator_ops)
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#define MC13783_GPO_DEFINE(prefix, _name, _reg, _voltages) \
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[MC13783_ ## prefix ## _ ## _name] = { \
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.desc = { \
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.name = #prefix "_" #_name, \
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.n_voltages = ARRAY_SIZE(_voltages), \
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.ops = &mc13783_gpo_regulator_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = MC13783_ ## prefix ## _ ## _name, \
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.owner = THIS_MODULE, \
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}, \
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.reg = MC13783_REG_ ## _reg, \
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.enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN, \
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.voltages = _voltages, \
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}
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#define MC13783_GPO_DEFINE(prefix, name, reg, voltages) \
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MC13xxx_GPO_DEFINE(MC13783_REG_, name, reg, voltages, \
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mc13783_gpo_regulator_ops)
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#define MC13783_DEFINE_SW(_name, _reg, _vsel_reg, _voltages) \
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MC13783_DEFINE(REG, _name, _reg, _vsel_reg, _voltages)
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#define MC13783_DEFINE_REGU(_name, _reg, _vsel_reg, _voltages) \
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MC13783_DEFINE(REG, _name, _reg, _vsel_reg, _voltages)
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static struct mc13783_regulator mc13783_regulators[] = {
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static struct mc13xxx_regulator mc13783_regulators[] = {
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MC13783_DEFINE_SW(SW3, SWITCHERS5, SWITCHERS5, mc13783_sw3_val),
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MC13783_FIXED_DEFINE(REG, VAUDIO, REGULATORMODE0, mc13783_vaudio_val),
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@ -274,213 +228,16 @@ static struct mc13783_regulator mc13783_regulators[] = {
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MC13783_GPO_DEFINE(REG, PWGT2SPI, POWERMISC, mc13783_pwgtdrv_val),
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};
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struct mc13783_regulator_priv {
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struct mc13783 *mc13783;
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u32 powermisc_pwgt_state;
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struct regulator_dev *regulators[];
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};
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static int mc13783_regulator_enable(struct regulator_dev *rdev)
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static int mc13783_powermisc_rmw(struct mc13xxx_regulator_priv *priv, u32 mask,
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u32 val)
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{
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struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
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int id = rdev_get_id(rdev);
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int ret;
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dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
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mc13783_lock(priv->mc13783);
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ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].reg,
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mc13783_regulators[id].enable_bit,
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mc13783_regulators[id].enable_bit);
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mc13783_unlock(priv->mc13783);
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return ret;
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}
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static int mc13783_regulator_disable(struct regulator_dev *rdev)
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{
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struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
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int id = rdev_get_id(rdev);
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int ret;
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dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
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mc13783_lock(priv->mc13783);
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ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].reg,
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mc13783_regulators[id].enable_bit, 0);
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mc13783_unlock(priv->mc13783);
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return ret;
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}
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static int mc13783_regulator_is_enabled(struct regulator_dev *rdev)
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{
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struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
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int ret, id = rdev_get_id(rdev);
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unsigned int val;
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mc13783_lock(priv->mc13783);
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ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val);
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mc13783_unlock(priv->mc13783);
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if (ret)
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return ret;
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return (val & mc13783_regulators[id].enable_bit) != 0;
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}
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static int mc13783_regulator_list_voltage(struct regulator_dev *rdev,
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unsigned selector)
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{
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int id = rdev_get_id(rdev);
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if (selector >= mc13783_regulators[id].desc.n_voltages)
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return -EINVAL;
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return mc13783_regulators[id].voltages[selector];
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}
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static int mc13783_get_best_voltage_index(struct regulator_dev *rdev,
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int min_uV, int max_uV)
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{
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int reg_id = rdev_get_id(rdev);
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int i;
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int bestmatch;
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int bestindex;
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/*
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* Locate the minimum voltage fitting the criteria on
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* this regulator. The switchable voltages are not
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* in strict falling order so we need to check them
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* all for the best match.
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*/
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bestmatch = INT_MAX;
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bestindex = -1;
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for (i = 0; i < mc13783_regulators[reg_id].desc.n_voltages; i++) {
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if (mc13783_regulators[reg_id].voltages[i] >= min_uV &&
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mc13783_regulators[reg_id].voltages[i] < bestmatch) {
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bestmatch = mc13783_regulators[reg_id].voltages[i];
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bestindex = i;
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}
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}
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if (bestindex < 0 || bestmatch > max_uV) {
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dev_warn(&rdev->dev, "no possible value for %d<=x<=%d uV\n",
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min_uV, max_uV);
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return -EINVAL;
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}
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return bestindex;
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}
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static int mc13783_regulator_set_voltage(struct regulator_dev *rdev,
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int min_uV, int max_uV,
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unsigned *selector)
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{
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struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
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int value, id = rdev_get_id(rdev);
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int ret;
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dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n",
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__func__, id, min_uV, max_uV);
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/* Find the best index */
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value = mc13783_get_best_voltage_index(rdev, min_uV, max_uV);
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dev_dbg(rdev_get_dev(rdev), "%s best value: %d \n", __func__, value);
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if (value < 0)
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return value;
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*selector = value;
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mc13783_lock(priv->mc13783);
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ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].vsel_reg,
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mc13783_regulators[id].vsel_mask,
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value << mc13783_regulators[id].vsel_shift);
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mc13783_unlock(priv->mc13783);
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return ret;
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}
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static int mc13783_regulator_get_voltage(struct regulator_dev *rdev)
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{
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struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
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int ret, id = rdev_get_id(rdev);
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unsigned int val;
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dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
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mc13783_lock(priv->mc13783);
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ret = mc13783_reg_read(priv->mc13783,
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mc13783_regulators[id].vsel_reg, &val);
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mc13783_unlock(priv->mc13783);
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if (ret)
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return ret;
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val = (val & mc13783_regulators[id].vsel_mask)
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>> mc13783_regulators[id].vsel_shift;
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dev_dbg(rdev_get_dev(rdev), "%s id: %d val: %d\n", __func__, id, val);
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BUG_ON(val < 0 || val > mc13783_regulators[id].desc.n_voltages);
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return mc13783_regulators[id].voltages[val];
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}
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static struct regulator_ops mc13783_regulator_ops = {
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.enable = mc13783_regulator_enable,
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.disable = mc13783_regulator_disable,
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.is_enabled = mc13783_regulator_is_enabled,
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.list_voltage = mc13783_regulator_list_voltage,
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.set_voltage = mc13783_regulator_set_voltage,
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.get_voltage = mc13783_regulator_get_voltage,
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};
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static int mc13783_fixed_regulator_set_voltage(struct regulator_dev *rdev,
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int min_uV, int max_uV,
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unsigned int *selector)
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{
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int id = rdev_get_id(rdev);
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dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n",
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__func__, id, min_uV, max_uV);
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*selector = 0;
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if (min_uV >= mc13783_regulators[id].voltages[0] &&
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max_uV <= mc13783_regulators[id].voltages[0])
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return 0;
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else
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return -EINVAL;
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}
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static int mc13783_fixed_regulator_get_voltage(struct regulator_dev *rdev)
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{
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int id = rdev_get_id(rdev);
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dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
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return mc13783_regulators[id].voltages[0];
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}
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static struct regulator_ops mc13783_fixed_regulator_ops = {
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.enable = mc13783_regulator_enable,
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.disable = mc13783_regulator_disable,
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.is_enabled = mc13783_regulator_is_enabled,
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.list_voltage = mc13783_regulator_list_voltage,
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.set_voltage = mc13783_fixed_regulator_set_voltage,
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.get_voltage = mc13783_fixed_regulator_get_voltage,
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};
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static int mc13783_powermisc_rmw(struct mc13783_regulator_priv *priv, u32 mask,
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u32 val)
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{
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struct mc13783 *mc13783 = priv->mc13783;
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struct mc13xxx *mc13783 = priv->mc13xxx;
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int ret;
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u32 valread;
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BUG_ON(val & ~mask);
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ret = mc13783_reg_read(mc13783, MC13783_REG_POWERMISC, &valread);
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ret = mc13xxx_reg_read(mc13783, MC13783_REG_POWERMISC, &valread);
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if (ret)
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return ret;
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@ -495,15 +252,16 @@ static int mc13783_powermisc_rmw(struct mc13783_regulator_priv *priv, u32 mask,
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valread = (valread & ~MC13783_REG_POWERMISC_PWGTSPI_M) |
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priv->powermisc_pwgt_state;
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return mc13783_reg_write(mc13783, MC13783_REG_POWERMISC, valread);
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return mc13xxx_reg_write(mc13783, MC13783_REG_POWERMISC, valread);
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}
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static int mc13783_gpo_regulator_enable(struct regulator_dev *rdev)
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{
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struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
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struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
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struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
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int id = rdev_get_id(rdev);
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int ret;
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u32 en_val = mc13783_regulators[id].enable_bit;
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u32 en_val = mc13xxx_regulators[id].enable_bit;
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dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
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@ -512,17 +270,18 @@ static int mc13783_gpo_regulator_enable(struct regulator_dev *rdev)
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id == MC13783_REG_PWGT2SPI)
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en_val = 0;
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mc13783_lock(priv->mc13783);
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ret = mc13783_powermisc_rmw(priv, mc13783_regulators[id].enable_bit,
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mc13xxx_lock(priv->mc13xxx);
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ret = mc13783_powermisc_rmw(priv, mc13xxx_regulators[id].enable_bit,
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en_val);
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mc13783_unlock(priv->mc13783);
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mc13xxx_unlock(priv->mc13xxx);
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return ret;
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}
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static int mc13783_gpo_regulator_disable(struct regulator_dev *rdev)
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{
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struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
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struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
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struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
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int id = rdev_get_id(rdev);
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int ret;
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u32 dis_val = 0;
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@ -532,25 +291,26 @@ static int mc13783_gpo_regulator_disable(struct regulator_dev *rdev)
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/* Power Gate disable value is 1 */
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if (id == MC13783_REG_PWGT1SPI ||
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id == MC13783_REG_PWGT2SPI)
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dis_val = mc13783_regulators[id].enable_bit;
|
||||
dis_val = mc13xxx_regulators[id].enable_bit;
|
||||
|
||||
mc13783_lock(priv->mc13783);
|
||||
ret = mc13783_powermisc_rmw(priv, mc13783_regulators[id].enable_bit,
|
||||
mc13xxx_lock(priv->mc13xxx);
|
||||
ret = mc13783_powermisc_rmw(priv, mc13xxx_regulators[id].enable_bit,
|
||||
dis_val);
|
||||
mc13783_unlock(priv->mc13783);
|
||||
mc13xxx_unlock(priv->mc13xxx);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int mc13783_gpo_regulator_is_enabled(struct regulator_dev *rdev)
|
||||
{
|
||||
struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
|
||||
struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
|
||||
struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
|
||||
int ret, id = rdev_get_id(rdev);
|
||||
unsigned int val;
|
||||
|
||||
mc13783_lock(priv->mc13783);
|
||||
ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val);
|
||||
mc13783_unlock(priv->mc13783);
|
||||
mc13xxx_lock(priv->mc13xxx);
|
||||
ret = mc13xxx_reg_read(priv->mc13xxx, mc13xxx_regulators[id].reg, &val);
|
||||
mc13xxx_unlock(priv->mc13xxx);
|
||||
|
||||
if (ret)
|
||||
return ret;
|
||||
|
|
@ -560,22 +320,22 @@ static int mc13783_gpo_regulator_is_enabled(struct regulator_dev *rdev)
|
|||
val = (val & ~MC13783_REG_POWERMISC_PWGTSPI_M) |
|
||||
(priv->powermisc_pwgt_state ^ MC13783_REG_POWERMISC_PWGTSPI_M);
|
||||
|
||||
return (val & mc13783_regulators[id].enable_bit) != 0;
|
||||
return (val & mc13xxx_regulators[id].enable_bit) != 0;
|
||||
}
|
||||
|
||||
static struct regulator_ops mc13783_gpo_regulator_ops = {
|
||||
.enable = mc13783_gpo_regulator_enable,
|
||||
.disable = mc13783_gpo_regulator_disable,
|
||||
.is_enabled = mc13783_gpo_regulator_is_enabled,
|
||||
.list_voltage = mc13783_regulator_list_voltage,
|
||||
.set_voltage = mc13783_fixed_regulator_set_voltage,
|
||||
.get_voltage = mc13783_fixed_regulator_get_voltage,
|
||||
.list_voltage = mc13xxx_regulator_list_voltage,
|
||||
.set_voltage = mc13xxx_fixed_regulator_set_voltage,
|
||||
.get_voltage = mc13xxx_fixed_regulator_get_voltage,
|
||||
};
|
||||
|
||||
static int __devinit mc13783_regulator_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct mc13783_regulator_priv *priv;
|
||||
struct mc13783 *mc13783 = dev_get_drvdata(pdev->dev.parent);
|
||||
struct mc13xxx_regulator_priv *priv;
|
||||
struct mc13xxx *mc13783 = dev_get_drvdata(pdev->dev.parent);
|
||||
struct mc13783_regulator_platform_data *pdata =
|
||||
dev_get_platdata(&pdev->dev);
|
||||
struct mc13783_regulator_init_data *init_data;
|
||||
|
|
@ -589,7 +349,8 @@ static int __devinit mc13783_regulator_probe(struct platform_device *pdev)
|
|||
if (!priv)
|
||||
return -ENOMEM;
|
||||
|
||||
priv->mc13783 = mc13783;
|
||||
priv->mc13xxx_regulators = mc13783_regulators;
|
||||
priv->mc13xxx = mc13783;
|
||||
|
||||
for (i = 0; i < pdata->num_regulators; i++) {
|
||||
init_data = &pdata->regulators[i];
|
||||
|
|
@ -619,7 +380,7 @@ err:
|
|||
|
||||
static int __devexit mc13783_regulator_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct mc13783_regulator_priv *priv = platform_get_drvdata(pdev);
|
||||
struct mc13xxx_regulator_priv *priv = platform_get_drvdata(pdev);
|
||||
struct mc13783_regulator_platform_data *pdata =
|
||||
dev_get_platdata(&pdev->dev);
|
||||
int i;
|
||||
|
|
|
|||
|
|
@ -0,0 +1,234 @@
|
|||
/*
|
||||
* Regulator Driver for Freescale MC13xxx PMIC
|
||||
*
|
||||
* Copyright 2010 Yong Shen <yong.shen@linaro.org>
|
||||
*
|
||||
* Based on mc13783 regulator driver :
|
||||
* Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
|
||||
* Copyright 2009 Alberto Panizzo <maramaopercheseimorto@gmail.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.
|
||||
*
|
||||
* Regs infos taken from mc13xxx drivers from freescale and mc13xxx.pdf file
|
||||
* from freescale
|
||||
*/
|
||||
|
||||
#include <linux/mfd/mc13xxx.h>
|
||||
#include <linux/regulator/machine.h>
|
||||
#include <linux/regulator/driver.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/err.h>
|
||||
#include "mc13xxx.h"
|
||||
|
||||
static int mc13xxx_regulator_enable(struct regulator_dev *rdev)
|
||||
{
|
||||
struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
|
||||
struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
|
||||
int id = rdev_get_id(rdev);
|
||||
int ret;
|
||||
|
||||
dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
|
||||
|
||||
mc13xxx_lock(priv->mc13xxx);
|
||||
ret = mc13xxx_reg_rmw(priv->mc13xxx, mc13xxx_regulators[id].reg,
|
||||
mc13xxx_regulators[id].enable_bit,
|
||||
mc13xxx_regulators[id].enable_bit);
|
||||
mc13xxx_unlock(priv->mc13xxx);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int mc13xxx_regulator_disable(struct regulator_dev *rdev)
|
||||
{
|
||||
struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
|
||||
struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
|
||||
int id = rdev_get_id(rdev);
|
||||
int ret;
|
||||
|
||||
dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
|
||||
|
||||
mc13xxx_lock(priv->mc13xxx);
|
||||
ret = mc13xxx_reg_rmw(priv->mc13xxx, mc13xxx_regulators[id].reg,
|
||||
mc13xxx_regulators[id].enable_bit, 0);
|
||||
mc13xxx_unlock(priv->mc13xxx);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int mc13xxx_regulator_is_enabled(struct regulator_dev *rdev)
|
||||
{
|
||||
struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
|
||||
struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
|
||||
int ret, id = rdev_get_id(rdev);
|
||||
unsigned int val;
|
||||
|
||||
mc13xxx_lock(priv->mc13xxx);
|
||||
ret = mc13xxx_reg_read(priv->mc13xxx, mc13xxx_regulators[id].reg, &val);
|
||||
mc13xxx_unlock(priv->mc13xxx);
|
||||
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return (val & mc13xxx_regulators[id].enable_bit) != 0;
|
||||
}
|
||||
|
||||
int mc13xxx_regulator_list_voltage(struct regulator_dev *rdev,
|
||||
unsigned selector)
|
||||
{
|
||||
int id = rdev_get_id(rdev);
|
||||
struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
|
||||
struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
|
||||
|
||||
if (selector >= mc13xxx_regulators[id].desc.n_voltages)
|
||||
return -EINVAL;
|
||||
|
||||
return mc13xxx_regulators[id].voltages[selector];
|
||||
}
|
||||
|
||||
int mc13xxx_get_best_voltage_index(struct regulator_dev *rdev,
|
||||
int min_uV, int max_uV)
|
||||
{
|
||||
struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
|
||||
struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
|
||||
int reg_id = rdev_get_id(rdev);
|
||||
int i;
|
||||
int bestmatch;
|
||||
int bestindex;
|
||||
|
||||
/*
|
||||
* Locate the minimum voltage fitting the criteria on
|
||||
* this regulator. The switchable voltages are not
|
||||
* in strict falling order so we need to check them
|
||||
* all for the best match.
|
||||
*/
|
||||
bestmatch = INT_MAX;
|
||||
bestindex = -1;
|
||||
for (i = 0; i < mc13xxx_regulators[reg_id].desc.n_voltages; i++) {
|
||||
if (mc13xxx_regulators[reg_id].voltages[i] >= min_uV &&
|
||||
mc13xxx_regulators[reg_id].voltages[i] < bestmatch) {
|
||||
bestmatch = mc13xxx_regulators[reg_id].voltages[i];
|
||||
bestindex = i;
|
||||
}
|
||||
}
|
||||
|
||||
if (bestindex < 0 || bestmatch > max_uV) {
|
||||
dev_warn(&rdev->dev, "no possible value for %d<=x<=%d uV\n",
|
||||
min_uV, max_uV);
|
||||
return -EINVAL;
|
||||
}
|
||||
return bestindex;
|
||||
}
|
||||
|
||||
static int mc13xxx_regulator_set_voltage(struct regulator_dev *rdev, int min_uV,
|
||||
int max_uV, unsigned *selector)
|
||||
{
|
||||
struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
|
||||
struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
|
||||
int value, id = rdev_get_id(rdev);
|
||||
int ret;
|
||||
|
||||
dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n",
|
||||
__func__, id, min_uV, max_uV);
|
||||
|
||||
/* Find the best index */
|
||||
value = mc13xxx_get_best_voltage_index(rdev, min_uV, max_uV);
|
||||
dev_dbg(rdev_get_dev(rdev), "%s best value: %d\n", __func__, value);
|
||||
if (value < 0)
|
||||
return value;
|
||||
|
||||
mc13xxx_lock(priv->mc13xxx);
|
||||
ret = mc13xxx_reg_rmw(priv->mc13xxx, mc13xxx_regulators[id].vsel_reg,
|
||||
mc13xxx_regulators[id].vsel_mask,
|
||||
value << mc13xxx_regulators[id].vsel_shift);
|
||||
mc13xxx_unlock(priv->mc13xxx);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int mc13xxx_regulator_get_voltage(struct regulator_dev *rdev)
|
||||
{
|
||||
struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
|
||||
struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
|
||||
int ret, id = rdev_get_id(rdev);
|
||||
unsigned int val;
|
||||
|
||||
dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
|
||||
|
||||
mc13xxx_lock(priv->mc13xxx);
|
||||
ret = mc13xxx_reg_read(priv->mc13xxx,
|
||||
mc13xxx_regulators[id].vsel_reg, &val);
|
||||
mc13xxx_unlock(priv->mc13xxx);
|
||||
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
val = (val & mc13xxx_regulators[id].vsel_mask)
|
||||
>> mc13xxx_regulators[id].vsel_shift;
|
||||
|
||||
dev_dbg(rdev_get_dev(rdev), "%s id: %d val: %d\n", __func__, id, val);
|
||||
|
||||
BUG_ON(val < 0 || val > mc13xxx_regulators[id].desc.n_voltages);
|
||||
|
||||
return mc13xxx_regulators[id].voltages[val];
|
||||
}
|
||||
|
||||
struct regulator_ops mc13xxx_regulator_ops = {
|
||||
.enable = mc13xxx_regulator_enable,
|
||||
.disable = mc13xxx_regulator_disable,
|
||||
.is_enabled = mc13xxx_regulator_is_enabled,
|
||||
.list_voltage = mc13xxx_regulator_list_voltage,
|
||||
.set_voltage = mc13xxx_regulator_set_voltage,
|
||||
.get_voltage = mc13xxx_regulator_get_voltage,
|
||||
};
|
||||
|
||||
int mc13xxx_fixed_regulator_set_voltage(struct regulator_dev *rdev, int min_uV,
|
||||
int max_uV, unsigned *selector)
|
||||
{
|
||||
struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
|
||||
struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
|
||||
int id = rdev_get_id(rdev);
|
||||
|
||||
dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n",
|
||||
__func__, id, min_uV, max_uV);
|
||||
|
||||
if (min_uV >= mc13xxx_regulators[id].voltages[0] &&
|
||||
max_uV <= mc13xxx_regulators[id].voltages[0])
|
||||
return 0;
|
||||
else
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
int mc13xxx_fixed_regulator_get_voltage(struct regulator_dev *rdev)
|
||||
{
|
||||
struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
|
||||
struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
|
||||
int id = rdev_get_id(rdev);
|
||||
|
||||
dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
|
||||
|
||||
return mc13xxx_regulators[id].voltages[0];
|
||||
}
|
||||
|
||||
struct regulator_ops mc13xxx_fixed_regulator_ops = {
|
||||
.enable = mc13xxx_regulator_enable,
|
||||
.disable = mc13xxx_regulator_disable,
|
||||
.is_enabled = mc13xxx_regulator_is_enabled,
|
||||
.list_voltage = mc13xxx_regulator_list_voltage,
|
||||
.set_voltage = mc13xxx_fixed_regulator_set_voltage,
|
||||
.get_voltage = mc13xxx_fixed_regulator_get_voltage,
|
||||
};
|
||||
|
||||
int mc13xxx_sw_regulator_is_enabled(struct regulator_dev *rdev)
|
||||
{
|
||||
return 1;
|
||||
}
|
||||
|
||||
MODULE_LICENSE("GPL v2");
|
||||
MODULE_AUTHOR("Yong Shen <yong.shen@linaro.org>");
|
||||
MODULE_DESCRIPTION("Regulator Driver for Freescale MC13xxx PMIC");
|
||||
MODULE_ALIAS("mc13xxx-regulator-core");
|
||||
|
|
@ -0,0 +1,101 @@
|
|||
/*
|
||||
* mc13xxx.h - regulators for the Freescale mc13xxx PMIC
|
||||
*
|
||||
* Copyright (C) 2010 Yong Shen <yong.shen@linaro.org>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef __LINUX_REGULATOR_MC13XXX_H
|
||||
#define __LINUX_REGULATOR_MC13XXX_H
|
||||
|
||||
#include <linux/regulator/driver.h>
|
||||
|
||||
struct mc13xxx_regulator {
|
||||
struct regulator_desc desc;
|
||||
int reg;
|
||||
int enable_bit;
|
||||
int vsel_reg;
|
||||
int vsel_shift;
|
||||
int vsel_mask;
|
||||
int hi_bit;
|
||||
int const *voltages;
|
||||
};
|
||||
|
||||
struct mc13xxx_regulator_priv {
|
||||
struct mc13xxx *mc13xxx;
|
||||
u32 powermisc_pwgt_state;
|
||||
struct mc13xxx_regulator *mc13xxx_regulators;
|
||||
struct regulator_dev *regulators[];
|
||||
};
|
||||
|
||||
extern int mc13xxx_sw_regulator(struct regulator_dev *rdev);
|
||||
extern int mc13xxx_sw_regulator_is_enabled(struct regulator_dev *rdev);
|
||||
extern int mc13xxx_get_best_voltage_index(struct regulator_dev *rdev,
|
||||
int min_uV, int max_uV);
|
||||
extern int mc13xxx_regulator_list_voltage(struct regulator_dev *rdev,
|
||||
unsigned selector);
|
||||
extern int mc13xxx_fixed_regulator_set_voltage(struct regulator_dev *rdev,
|
||||
int min_uV, int max_uV, unsigned *selector);
|
||||
extern int mc13xxx_fixed_regulator_get_voltage(struct regulator_dev *rdev);
|
||||
|
||||
extern struct regulator_ops mc13xxx_regulator_ops;
|
||||
extern struct regulator_ops mc13xxx_fixed_regulator_ops;
|
||||
|
||||
#define MC13xxx_DEFINE(prefix, _name, _reg, _vsel_reg, _voltages, _ops) \
|
||||
[prefix ## _name] = { \
|
||||
.desc = { \
|
||||
.name = #prefix "_" #_name, \
|
||||
.n_voltages = ARRAY_SIZE(_voltages), \
|
||||
.ops = &_ops, \
|
||||
.type = REGULATOR_VOLTAGE, \
|
||||
.id = prefix ## _name, \
|
||||
.owner = THIS_MODULE, \
|
||||
}, \
|
||||
.reg = prefix ## _reg, \
|
||||
.enable_bit = prefix ## _reg ## _ ## _name ## EN, \
|
||||
.vsel_reg = prefix ## _vsel_reg, \
|
||||
.vsel_shift = prefix ## _vsel_reg ## _ ## _name ## VSEL,\
|
||||
.vsel_mask = prefix ## _vsel_reg ## _ ## _name ## VSEL_M,\
|
||||
.voltages = _voltages, \
|
||||
}
|
||||
|
||||
#define MC13xxx_FIXED_DEFINE(prefix, _name, _reg, _voltages, _ops) \
|
||||
[prefix ## _name] = { \
|
||||
.desc = { \
|
||||
.name = #prefix "_" #_name, \
|
||||
.n_voltages = ARRAY_SIZE(_voltages), \
|
||||
.ops = &_ops, \
|
||||
.type = REGULATOR_VOLTAGE, \
|
||||
.id = prefix ## _name, \
|
||||
.owner = THIS_MODULE, \
|
||||
}, \
|
||||
.reg = prefix ## _reg, \
|
||||
.enable_bit = prefix ## _reg ## _ ## _name ## EN, \
|
||||
.voltages = _voltages, \
|
||||
}
|
||||
|
||||
#define MC13xxx_GPO_DEFINE(prefix, _name, _reg, _voltages, _ops) \
|
||||
[prefix ## _name] = { \
|
||||
.desc = { \
|
||||
.name = #prefix "_" #_name, \
|
||||
.n_voltages = ARRAY_SIZE(_voltages), \
|
||||
.ops = &_ops, \
|
||||
.type = REGULATOR_VOLTAGE, \
|
||||
.id = prefix ## _name, \
|
||||
.owner = THIS_MODULE, \
|
||||
}, \
|
||||
.reg = prefix ## _reg, \
|
||||
.enable_bit = prefix ## _reg ## _ ## _name ## EN, \
|
||||
.voltages = _voltages, \
|
||||
}
|
||||
|
||||
#define MC13xxx_DEFINE_SW(_name, _reg, _vsel_reg, _voltages, ops) \
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MC13xxx_DEFINE(SW, _name, _reg, _vsel_reg, _voltages, ops)
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#define MC13xxx_DEFINE_REGU(_name, _reg, _vsel_reg, _voltages, ops) \
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MC13xxx_DEFINE(REGU, _name, _reg, _vsel_reg, _voltages, ops)
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#endif
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