regulator: add TPS6586X regulator driver
Signed-off-by: Mike Rapoport <mike@compulab.co.il> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Mike Rapoport
Liam Girdwood
parent
c5a4655db9
commit
49610235d5
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@ -229,5 +229,11 @@ config REGULATOR_AB8500
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This driver supports the regulators found on the ST-Ericsson mixed
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This driver supports the regulators found on the ST-Ericsson mixed
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signal AB8500 PMIC
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signal AB8500 PMIC
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config REGULATOR_TPS6586X
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tristate "TI TPS6586X Power regulators"
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depends on I2C
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help
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This driver supports TPS6586X voltage regulator chips.
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endif
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endif
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@ -24,6 +24,7 @@ obj-$(CONFIG_REGULATOR_WM831X) += wm831x-ldo.o
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obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o
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obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o
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obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o
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obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o
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obj-$(CONFIG_REGULATOR_WM8994) += wm8994-regulator.o
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obj-$(CONFIG_REGULATOR_WM8994) += wm8994-regulator.o
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obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o
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obj-$(CONFIG_REGULATOR_DA903X) += da903x.o
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obj-$(CONFIG_REGULATOR_DA903X) += da903x.o
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obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
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obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
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obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o
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obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o
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@ -0,0 +1,387 @@
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/*
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* Regulator driver for TI TPS6586x
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*
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* Copyright (C) 2010 Compulab Ltd.
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* Author: Mike Rapoport <mike@compulab.co.il>
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*
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* Based on da903x
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* Copyright (C) 2006-2008 Marvell International Ltd.
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* Copyright (C) 2008 Compulab Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#define DEBUG
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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/slab.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/regulator/machine.h>
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#include <linux/mfd/tps6586x.h>
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/* supply control and voltage setting */
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#define TPS6586X_SUPPLYENA 0x10
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#define TPS6586X_SUPPLYENB 0x11
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#define TPS6586X_SUPPLYENC 0x12
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#define TPS6586X_SUPPLYEND 0x13
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#define TPS6586X_SUPPLYENE 0x14
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#define TPS6586X_VCC1 0x20
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#define TPS6586X_VCC2 0x21
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#define TPS6586X_SM1V1 0x23
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#define TPS6586X_SM1V2 0x24
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#define TPS6586X_SM1SL 0x25
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#define TPS6586X_SM0V1 0x26
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#define TPS6586X_SM0V2 0x27
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#define TPS6586X_SM0SL 0x28
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#define TPS6586X_LDO2AV1 0x29
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#define TPS6586X_LDO2AV2 0x2A
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#define TPS6586X_LDO2BV1 0x2F
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#define TPS6586X_LDO2BV2 0x30
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#define TPS6586X_LDO4V1 0x32
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#define TPS6586X_LDO4V2 0x33
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/* converter settings */
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#define TPS6586X_SUPPLYV1 0x41
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#define TPS6586X_SUPPLYV2 0x42
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#define TPS6586X_SUPPLYV3 0x43
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#define TPS6586X_SUPPLYV4 0x44
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#define TPS6586X_SUPPLYV5 0x45
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#define TPS6586X_SUPPLYV6 0x46
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#define TPS6586X_SMODE1 0x47
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#define TPS6586X_SMODE2 0x48
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struct tps6586x_regulator {
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struct regulator_desc desc;
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int volt_reg;
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int volt_shift;
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int volt_nbits;
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int enable_bit[2];
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int enable_reg[2];
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int *voltages;
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/* for DVM regulators */
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int go_reg;
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int go_bit;
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};
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static inline struct device *to_tps6586x_dev(struct regulator_dev *rdev)
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{
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return rdev_get_dev(rdev)->parent->parent;
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}
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static int tps6586x_ldo_list_voltage(struct regulator_dev *rdev,
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unsigned selector)
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{
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struct tps6586x_regulator *info = rdev_get_drvdata(rdev);
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return info->voltages[selector];
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}
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static int __tps6586x_ldo_set_voltage(struct device *parent,
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struct tps6586x_regulator *ri,
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int min_uV, int max_uV)
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{
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int val, uV;
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uint8_t mask;
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for (val = 0; val < ri->desc.n_voltages; val++) {
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uV = ri->voltages[val] * 1000;
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/* LDO0 has minimal voltage 1.2 rather than 1.25 */
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if (ri->desc.id == TPS6586X_ID_LDO_0 && val == 0)
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uV -= 50 * 1000;
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/* use the first in-range value */
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if (min_uV <= uV && uV <= max_uV) {
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val <<= ri->volt_shift;
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mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift;
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return tps6586x_update(parent, ri->volt_reg, val, mask);
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}
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}
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return -EINVAL;
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}
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static int tps6586x_ldo_set_voltage(struct regulator_dev *rdev,
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int min_uV, int max_uV)
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{
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struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps6586x_dev(rdev);
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return __tps6586x_ldo_set_voltage(parent, ri, min_uV, max_uV);
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}
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static int tps6586x_ldo_get_voltage(struct regulator_dev *rdev)
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{
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struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps6586x_dev(rdev);
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uint8_t val, mask;
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int ret;
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ret = tps6586x_read(parent, ri->volt_reg, &val);
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if (ret)
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return ret;
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mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift;
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val = (val & mask) >> ri->volt_shift;
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if (val > ri->desc.n_voltages)
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BUG();
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return ri->voltages[val];
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}
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static int tps6586x_dvm_set_voltage(struct regulator_dev *rdev,
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int min_uV, int max_uV)
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{
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struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps6586x_dev(rdev);
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int ret;
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ret = __tps6586x_ldo_set_voltage(parent, ri, min_uV, max_uV);
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if (ret)
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return ret;
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return tps6586x_set_bits(parent, ri->go_reg, ri->go_bit);
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}
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static int tps6586x_regulator_enable(struct regulator_dev *rdev)
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{
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struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps6586x_dev(rdev);
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return tps6586x_set_bits(parent, ri->enable_reg[0],
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1 << ri->enable_bit[0]);
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}
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static int tps6586x_regulator_disable(struct regulator_dev *rdev)
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{
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struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps6586x_dev(rdev);
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return tps6586x_clr_bits(parent, ri->enable_reg[0],
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1 << ri->enable_bit[0]);
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}
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static int tps6586x_regulator_is_enabled(struct regulator_dev *rdev)
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{
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struct tps6586x_regulator *ri = rdev_get_drvdata(rdev);
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struct device *parent = to_tps6586x_dev(rdev);
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uint8_t reg_val;
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int ret;
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ret = tps6586x_read(parent, ri->enable_reg[0], ®_val);
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if (ret)
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return ret;
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return !!(reg_val & (1 << ri->enable_bit[0]));
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}
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static struct regulator_ops tps6586x_regulator_ldo_ops = {
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.list_voltage = tps6586x_ldo_list_voltage,
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.get_voltage = tps6586x_ldo_get_voltage,
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.set_voltage = tps6586x_ldo_set_voltage,
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.is_enabled = tps6586x_regulator_is_enabled,
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.enable = tps6586x_regulator_enable,
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.disable = tps6586x_regulator_disable,
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};
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static struct regulator_ops tps6586x_regulator_dvm_ops = {
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.list_voltage = tps6586x_ldo_list_voltage,
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.get_voltage = tps6586x_ldo_get_voltage,
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.set_voltage = tps6586x_dvm_set_voltage,
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.is_enabled = tps6586x_regulator_is_enabled,
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.enable = tps6586x_regulator_enable,
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.disable = tps6586x_regulator_disable,
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};
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static int tps6586x_ldo_voltages[] = {
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1250, 1500, 1800, 2500, 2700, 2850, 3100, 3300,
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};
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static int tps6586x_ldo4_voltages[] = {
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1700, 1725, 1750, 1775, 1800, 1825, 1850, 1875,
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1900, 1925, 1950, 1975, 2000, 2025, 2050, 2075,
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2100, 2125, 2150, 2175, 2200, 2225, 2250, 2275,
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2300, 2325, 2350, 2375, 2400, 2425, 2450, 2475,
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};
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static int tps6586x_dvm_voltages[] = {
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725, 750, 775, 800, 825, 850, 875, 900,
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925, 950, 975, 1000, 1025, 1050, 1075, 1100,
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1125, 1150, 1175, 1200, 1225, 1250, 1275, 1300,
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1325, 1350, 1375, 1400, 1425, 1450, 1475, 1500,
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};
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#define TPS6586X_REGULATOR(_id, vdata, _ops, vreg, shift, nbits, \
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ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
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{ \
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.desc = { \
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.name = "REG-" #_id, \
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.ops = &tps6586x_regulator_##_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = TPS6586X_ID_##_id, \
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.n_voltages = ARRAY_SIZE(tps6586x_##vdata##_voltages), \
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.owner = THIS_MODULE, \
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}, \
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.volt_reg = TPS6586X_##vreg, \
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.volt_shift = (shift), \
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.volt_nbits = (nbits), \
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.enable_reg[0] = TPS6586X_SUPPLY##ereg0, \
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.enable_bit[0] = (ebit0), \
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.enable_reg[1] = TPS6586X_SUPPLY##ereg1, \
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.enable_bit[1] = (ebit1), \
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.voltages = tps6586x_##vdata##_voltages, \
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}
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#define TPS6586X_LDO(_id, vdata, vreg, shift, nbits, \
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ereg0, ebit0, ereg1, ebit1) \
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TPS6586X_REGULATOR(_id, vdata, ldo_ops, vreg, shift, nbits, \
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ereg0, ebit0, ereg1, ebit1, 0, 0)
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#define TPS6586X_DVM(_id, vdata, vreg, shift, nbits, \
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ereg0, ebit0, ereg1, ebit1, goreg, gobit) \
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TPS6586X_REGULATOR(_id, vdata, dvm_ops, vreg, shift, nbits, \
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ereg0, ebit0, ereg1, ebit1, goreg, gobit)
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static struct tps6586x_regulator tps6586x_regulator[] = {
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TPS6586X_LDO(LDO_0, ldo, SUPPLYV1, 5, 3, ENC, 0, END, 0),
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TPS6586X_LDO(LDO_3, ldo, SUPPLYV4, 0, 3, ENC, 2, END, 2),
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TPS6586X_LDO(LDO_5, ldo, SUPPLYV6, 0, 3, ENE, 6, ENE, 6),
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TPS6586X_LDO(LDO_6, ldo, SUPPLYV3, 0, 3, ENC, 4, END, 4),
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TPS6586X_LDO(LDO_7, ldo, SUPPLYV3, 3, 3, ENC, 5, END, 5),
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TPS6586X_LDO(LDO_8, ldo, SUPPLYV1, 5, 3, ENC, 6, END, 6),
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TPS6586X_LDO(LDO_9, ldo, SUPPLYV6, 3, 3, ENE, 7, ENE, 7),
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TPS6586X_LDO(LDO_RTC, ldo, SUPPLYV4, 3, 3, ENE, 7, ENE, 7),
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TPS6586X_LDO(LDO_1, dvm, SUPPLYV1, 0, 5, ENC, 1, END, 1),
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TPS6586X_LDO(SM_2, dvm, SUPPLYV2, 0, 5, ENC, 1, END, 1),
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TPS6586X_DVM(LDO_2, dvm, LDO2BV1, 0, 5, ENA, 3, ENB, 3, VCC2, 6),
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TPS6586X_DVM(LDO_4, ldo4, LDO4V1, 0, 5, ENC, 3, END, 3, VCC1, 6),
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TPS6586X_DVM(SM_0, dvm, SM0V1, 0, 5, ENA, 1, ENB, 1, VCC1, 2),
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TPS6586X_DVM(SM_1, dvm, SM1V1, 0, 5, ENA, 0, ENB, 0, VCC1, 0),
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};
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/*
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* TPS6586X has 2 enable bits that are OR'ed to determine the actual
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* regulator state. Clearing one of this bits allows switching
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* regulator on and of with single register write.
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*/
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static inline int tps6586x_regulator_preinit(struct device *parent,
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struct tps6586x_regulator *ri)
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{
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uint8_t val1, val2;
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int ret;
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ret = tps6586x_read(parent, ri->enable_reg[0], &val1);
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if (ret)
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return ret;
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ret = tps6586x_read(parent, ri->enable_reg[1], &val2);
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if (ret)
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return ret;
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if (!(val2 & ri->enable_bit[1]))
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return 0;
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/*
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* The regulator is on, but it's enabled with the bit we don't
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* want to use, so we switch the enable bits
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*/
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||||||
|
if (!(val1 & ri->enable_bit[0])) {
|
||||||
|
ret = tps6586x_set_bits(parent, ri->enable_reg[0],
|
||||||
|
1 << ri->enable_bit[0]);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
return tps6586x_clr_bits(parent, ri->enable_reg[1],
|
||||||
|
1 << ri->enable_bit[1]);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline struct tps6586x_regulator *find_regulator_info(int id)
|
||||||
|
{
|
||||||
|
struct tps6586x_regulator *ri;
|
||||||
|
int i;
|
||||||
|
|
||||||
|
for (i = 0; i < ARRAY_SIZE(tps6586x_regulator); i++) {
|
||||||
|
ri = &tps6586x_regulator[i];
|
||||||
|
if (ri->desc.id == id)
|
||||||
|
return ri;
|
||||||
|
}
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int __devinit tps6586x_regulator_probe(struct platform_device *pdev)
|
||||||
|
{
|
||||||
|
struct tps6586x_regulator *ri = NULL;
|
||||||
|
struct regulator_dev *rdev;
|
||||||
|
int id = pdev->id;
|
||||||
|
int err;
|
||||||
|
|
||||||
|
dev_dbg(&pdev->dev, "Probing reulator %d\n", id);
|
||||||
|
|
||||||
|
ri = find_regulator_info(id);
|
||||||
|
if (ri == NULL) {
|
||||||
|
dev_err(&pdev->dev, "invalid regulator ID specified\n");
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
err = tps6586x_regulator_preinit(pdev->dev.parent, ri);
|
||||||
|
if (err)
|
||||||
|
return err;
|
||||||
|
|
||||||
|
rdev = regulator_register(&ri->desc, &pdev->dev,
|
||||||
|
pdev->dev.platform_data, ri);
|
||||||
|
if (IS_ERR(rdev)) {
|
||||||
|
dev_err(&pdev->dev, "failed to register regulator %s\n",
|
||||||
|
ri->desc.name);
|
||||||
|
return PTR_ERR(rdev);
|
||||||
|
}
|
||||||
|
|
||||||
|
platform_set_drvdata(pdev, ri);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int __devexit tps6586x_regulator_remove(struct platform_device *pdev)
|
||||||
|
{
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static struct platform_driver tps6586x_regulator_driver = {
|
||||||
|
.driver = {
|
||||||
|
.name = "tps6586x-regulator",
|
||||||
|
.owner = THIS_MODULE,
|
||||||
|
},
|
||||||
|
.probe = tps6586x_regulator_probe,
|
||||||
|
.remove = __devexit_p(tps6586x_regulator_remove),
|
||||||
|
};
|
||||||
|
|
||||||
|
static int __init tps6586x_regulator_init(void)
|
||||||
|
{
|
||||||
|
return platform_driver_register(&tps6586x_regulator_driver);
|
||||||
|
}
|
||||||
|
subsys_initcall(tps6586x_regulator_init);
|
||||||
|
|
||||||
|
static void __exit tps6586x_regulator_exit(void)
|
||||||
|
{
|
||||||
|
platform_driver_unregister(&tps6586x_regulator_driver);
|
||||||
|
}
|
||||||
|
module_exit(tps6586x_regulator_exit);
|
||||||
|
|
||||||
|
MODULE_LICENSE("GPL");
|
||||||
|
MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
|
||||||
|
MODULE_DESCRIPTION("Regulator Driver for TI TPS6586X PMIC");
|
||||||
|
MODULE_ALIAS("platform:tps6586x-regulator");
|
||||||
Loading…
Reference in New Issue