655 lines
19 KiB
C
655 lines
19 KiB
C
/*
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* Regulator Driver for Freescale MC13783 PMIC
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*
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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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* 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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#include <linux/mfd/mc13783.h>
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#include <linux/regulator/machine.h>
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#include <linux/regulator/driver.h>
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#include <linux/platform_device.h>
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#include <linux/kernel.h>
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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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#define MC13783_REG_SWITCHERS5 29
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#define MC13783_REG_SWITCHERS5_SW3EN (1 << 20)
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#define MC13783_REG_SWITCHERS5_SW3VSEL 18
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#define MC13783_REG_SWITCHERS5_SW3VSEL_M (3 << 18)
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#define MC13783_REG_REGULATORSETTING0 30
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#define MC13783_REG_REGULATORSETTING0_VIOLOVSEL 2
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#define MC13783_REG_REGULATORSETTING0_VDIGVSEL 4
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#define MC13783_REG_REGULATORSETTING0_VGENVSEL 6
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#define MC13783_REG_REGULATORSETTING0_VRFDIGVSEL 9
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#define MC13783_REG_REGULATORSETTING0_VRFREFVSEL 11
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#define MC13783_REG_REGULATORSETTING0_VRFCPVSEL 13
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#define MC13783_REG_REGULATORSETTING0_VSIMVSEL 14
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#define MC13783_REG_REGULATORSETTING0_VESIMVSEL 15
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#define MC13783_REG_REGULATORSETTING0_VCAMVSEL 16
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#define MC13783_REG_REGULATORSETTING0_VIOLOVSEL_M (3 << 2)
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#define MC13783_REG_REGULATORSETTING0_VDIGVSEL_M (3 << 4)
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#define MC13783_REG_REGULATORSETTING0_VGENVSEL_M (7 << 6)
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#define MC13783_REG_REGULATORSETTING0_VRFDIGVSEL_M (3 << 9)
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#define MC13783_REG_REGULATORSETTING0_VRFREFVSEL_M (3 << 11)
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#define MC13783_REG_REGULATORSETTING0_VRFCPVSEL_M (1 << 13)
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#define MC13783_REG_REGULATORSETTING0_VSIMVSEL_M (1 << 14)
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#define MC13783_REG_REGULATORSETTING0_VESIMVSEL_M (1 << 15)
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#define MC13783_REG_REGULATORSETTING0_VCAMVSEL_M (7 << 16)
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#define MC13783_REG_REGULATORSETTING1 31
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#define MC13783_REG_REGULATORSETTING1_VVIBVSEL 0
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#define MC13783_REG_REGULATORSETTING1_VRF1VSEL 2
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#define MC13783_REG_REGULATORSETTING1_VRF2VSEL 4
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#define MC13783_REG_REGULATORSETTING1_VMMC1VSEL 6
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#define MC13783_REG_REGULATORSETTING1_VMMC2VSEL 9
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#define MC13783_REG_REGULATORSETTING1_VVIBVSEL_M (3 << 0)
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#define MC13783_REG_REGULATORSETTING1_VRF1VSEL_M (3 << 2)
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#define MC13783_REG_REGULATORSETTING1_VRF2VSEL_M (3 << 4)
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#define MC13783_REG_REGULATORSETTING1_VMMC1VSEL_M (7 << 6)
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#define MC13783_REG_REGULATORSETTING1_VMMC2VSEL_M (7 << 9)
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#define MC13783_REG_REGULATORMODE0 32
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#define MC13783_REG_REGULATORMODE0_VAUDIOEN (1 << 0)
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#define MC13783_REG_REGULATORMODE0_VIOHIEN (1 << 3)
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#define MC13783_REG_REGULATORMODE0_VIOLOEN (1 << 6)
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#define MC13783_REG_REGULATORMODE0_VDIGEN (1 << 9)
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#define MC13783_REG_REGULATORMODE0_VGENEN (1 << 12)
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#define MC13783_REG_REGULATORMODE0_VRFDIGEN (1 << 15)
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#define MC13783_REG_REGULATORMODE0_VRFREFEN (1 << 18)
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#define MC13783_REG_REGULATORMODE0_VRFCPEN (1 << 21)
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#define MC13783_REG_REGULATORMODE1 33
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#define MC13783_REG_REGULATORMODE1_VSIMEN (1 << 0)
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#define MC13783_REG_REGULATORMODE1_VESIMEN (1 << 3)
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#define MC13783_REG_REGULATORMODE1_VCAMEN (1 << 6)
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#define MC13783_REG_REGULATORMODE1_VRFBGEN (1 << 9)
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#define MC13783_REG_REGULATORMODE1_VVIBEN (1 << 11)
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#define MC13783_REG_REGULATORMODE1_VRF1EN (1 << 12)
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#define MC13783_REG_REGULATORMODE1_VRF2EN (1 << 15)
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#define MC13783_REG_REGULATORMODE1_VMMC1EN (1 << 18)
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#define MC13783_REG_REGULATORMODE1_VMMC2EN (1 << 21)
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#define MC13783_REG_POWERMISC 34
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#define MC13783_REG_POWERMISC_GPO1EN (1 << 6)
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#define MC13783_REG_POWERMISC_GPO2EN (1 << 8)
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#define MC13783_REG_POWERMISC_GPO3EN (1 << 10)
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#define MC13783_REG_POWERMISC_GPO4EN (1 << 12)
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#define MC13783_REG_POWERMISC_PWGT1SPIEN (1 << 15)
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#define MC13783_REG_POWERMISC_PWGT2SPIEN (1 << 16)
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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 const mc13783_sw3_val[] = {
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5000000, 5000000, 5000000, 5500000,
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};
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static const int const mc13783_vaudio_val[] = {
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2775000,
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};
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static const int const mc13783_viohi_val[] = {
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2775000,
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};
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static const int const mc13783_violo_val[] = {
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1200000, 1300000, 1500000, 1800000,
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};
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static const int const mc13783_vdig_val[] = {
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1200000, 1300000, 1500000, 1800000,
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};
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static const int const mc13783_vgen_val[] = {
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1200000, 1300000, 1500000, 1800000,
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1100000, 2000000, 2775000, 2400000,
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};
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static const int const mc13783_vrfdig_val[] = {
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1200000, 1500000, 1800000, 1875000,
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};
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static const int const mc13783_vrfref_val[] = {
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2475000, 2600000, 2700000, 2775000,
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};
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static const int const mc13783_vrfcp_val[] = {
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2700000, 2775000,
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};
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static const int const mc13783_vsim_val[] = {
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1800000, 2900000, 3000000,
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};
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static const int const mc13783_vesim_val[] = {
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1800000, 2900000,
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};
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static const int const mc13783_vcam_val[] = {
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1500000, 1800000, 2500000, 2550000,
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2600000, 2750000, 2800000, 3000000,
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};
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static const int const mc13783_vrfbg_val[] = {
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1250000,
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};
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static const int const mc13783_vvib_val[] = {
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1300000, 1800000, 2000000, 3000000,
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};
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static const int const mc13783_vmmc_val[] = {
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1600000, 1800000, 2000000, 2600000,
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2700000, 2800000, 2900000, 3000000,
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};
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static const int const mc13783_vrf_val[] = {
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1500000, 1875000, 2700000, 2775000,
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};
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static const int const mc13783_gpo_val[] = {
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3100000,
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};
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static const int const 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_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_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_DEFINE_SW(_name, _reg, _vsel_reg, _voltages) \
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MC13783_DEFINE(SW, _name, _reg, _vsel_reg, _voltages)
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#define MC13783_DEFINE_REGU(_name, _reg, _vsel_reg, _voltages) \
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MC13783_DEFINE(REGU, _name, _reg, _vsel_reg, _voltages)
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static struct mc13783_regulator mc13783_regulators[] = {
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MC13783_DEFINE_SW(SW3, SWITCHERS5, SWITCHERS5, mc13783_sw3_val),
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MC13783_FIXED_DEFINE(REGU, VAUDIO, REGULATORMODE0, mc13783_vaudio_val),
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MC13783_FIXED_DEFINE(REGU, VIOHI, REGULATORMODE0, mc13783_viohi_val),
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MC13783_DEFINE_REGU(VIOLO, REGULATORMODE0, REGULATORSETTING0, \
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mc13783_violo_val),
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MC13783_DEFINE_REGU(VDIG, REGULATORMODE0, REGULATORSETTING0, \
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mc13783_vdig_val),
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MC13783_DEFINE_REGU(VGEN, REGULATORMODE0, REGULATORSETTING0, \
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mc13783_vgen_val),
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MC13783_DEFINE_REGU(VRFDIG, REGULATORMODE0, REGULATORSETTING0, \
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mc13783_vrfdig_val),
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MC13783_DEFINE_REGU(VRFREF, REGULATORMODE0, REGULATORSETTING0, \
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mc13783_vrfref_val),
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MC13783_DEFINE_REGU(VRFCP, REGULATORMODE0, REGULATORSETTING0, \
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mc13783_vrfcp_val),
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MC13783_DEFINE_REGU(VSIM, REGULATORMODE1, REGULATORSETTING0, \
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mc13783_vsim_val),
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MC13783_DEFINE_REGU(VESIM, REGULATORMODE1, REGULATORSETTING0, \
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mc13783_vesim_val),
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MC13783_DEFINE_REGU(VCAM, REGULATORMODE1, REGULATORSETTING0, \
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mc13783_vcam_val),
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MC13783_FIXED_DEFINE(REGU, VRFBG, REGULATORMODE1, mc13783_vrfbg_val),
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MC13783_DEFINE_REGU(VVIB, REGULATORMODE1, REGULATORSETTING1, \
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mc13783_vvib_val),
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MC13783_DEFINE_REGU(VRF1, REGULATORMODE1, REGULATORSETTING1, \
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mc13783_vrf_val),
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MC13783_DEFINE_REGU(VRF2, REGULATORMODE1, REGULATORSETTING1, \
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mc13783_vrf_val),
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MC13783_DEFINE_REGU(VMMC1, REGULATORMODE1, REGULATORSETTING1, \
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mc13783_vmmc_val),
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MC13783_DEFINE_REGU(VMMC2, REGULATORMODE1, REGULATORSETTING1, \
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mc13783_vmmc_val),
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MC13783_GPO_DEFINE(REGU, GPO1, POWERMISC, mc13783_gpo_val),
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MC13783_GPO_DEFINE(REGU, GPO2, POWERMISC, mc13783_gpo_val),
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MC13783_GPO_DEFINE(REGU, GPO3, POWERMISC, mc13783_gpo_val),
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MC13783_GPO_DEFINE(REGU, GPO4, POWERMISC, mc13783_gpo_val),
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MC13783_GPO_DEFINE(REGU, PWGT1SPI, POWERMISC, mc13783_pwgtdrv_val),
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MC13783_GPO_DEFINE(REGU, 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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{
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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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{
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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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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);
|
|
mc13783_unlock(priv->mc13783);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
val = (val & mc13783_regulators[id].vsel_mask)
|
|
>> mc13783_regulators[id].vsel_shift;
|
|
|
|
dev_dbg(rdev_get_dev(rdev), "%s id: %d val: %d\n", __func__, id, val);
|
|
|
|
BUG_ON(val < 0 || val > mc13783_regulators[id].desc.n_voltages);
|
|
|
|
return mc13783_regulators[id].voltages[val];
|
|
}
|
|
|
|
static struct regulator_ops mc13783_regulator_ops = {
|
|
.enable = mc13783_regulator_enable,
|
|
.disable = mc13783_regulator_disable,
|
|
.is_enabled = mc13783_regulator_is_enabled,
|
|
.list_voltage = mc13783_regulator_list_voltage,
|
|
.set_voltage = mc13783_regulator_set_voltage,
|
|
.get_voltage = mc13783_regulator_get_voltage,
|
|
};
|
|
|
|
static int mc13783_fixed_regulator_set_voltage(struct regulator_dev *rdev,
|
|
int min_uV, int max_uV)
|
|
{
|
|
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 >= mc13783_regulators[id].voltages[0] &&
|
|
max_uV <= mc13783_regulators[id].voltages[0])
|
|
return 0;
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int mc13783_fixed_regulator_get_voltage(struct regulator_dev *rdev)
|
|
{
|
|
int id = rdev_get_id(rdev);
|
|
|
|
dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
|
|
|
|
return mc13783_regulators[id].voltages[0];
|
|
}
|
|
|
|
static struct regulator_ops mc13783_fixed_regulator_ops = {
|
|
.enable = mc13783_regulator_enable,
|
|
.disable = mc13783_regulator_disable,
|
|
.is_enabled = mc13783_regulator_is_enabled,
|
|
.list_voltage = mc13783_regulator_list_voltage,
|
|
.set_voltage = mc13783_fixed_regulator_set_voltage,
|
|
.get_voltage = mc13783_fixed_regulator_get_voltage,
|
|
};
|
|
|
|
static int mc13783_powermisc_rmw(struct mc13783_regulator_priv *priv, u32 mask,
|
|
u32 val)
|
|
{
|
|
struct mc13783 *mc13783 = priv->mc13783;
|
|
int ret;
|
|
u32 valread;
|
|
|
|
BUG_ON(val & ~mask);
|
|
|
|
ret = mc13783_reg_read(mc13783, MC13783_REG_POWERMISC, &valread);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Update the stored state for Power Gates. */
|
|
priv->powermisc_pwgt_state =
|
|
(priv->powermisc_pwgt_state & ~mask) | val;
|
|
priv->powermisc_pwgt_state &= MC13783_REG_POWERMISC_PWGTSPI_M;
|
|
|
|
/* Construct the new register value */
|
|
valread = (valread & ~mask) | val;
|
|
/* Overwrite the PWGTxEN with the stored version */
|
|
valread = (valread & ~MC13783_REG_POWERMISC_PWGTSPI_M) |
|
|
priv->powermisc_pwgt_state;
|
|
|
|
return mc13783_reg_write(mc13783, MC13783_REG_POWERMISC, valread);
|
|
}
|
|
|
|
static int mc13783_gpo_regulator_enable(struct regulator_dev *rdev)
|
|
{
|
|
struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
|
|
int id = rdev_get_id(rdev);
|
|
int ret;
|
|
u32 en_val = mc13783_regulators[id].enable_bit;
|
|
|
|
dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
|
|
|
|
/* Power Gate enable value is 0 */
|
|
if (id == MC13783_REGU_PWGT1SPI ||
|
|
id == MC13783_REGU_PWGT2SPI)
|
|
en_val = 0;
|
|
|
|
mc13783_lock(priv->mc13783);
|
|
ret = mc13783_powermisc_rmw(priv, mc13783_regulators[id].enable_bit,
|
|
en_val);
|
|
mc13783_unlock(priv->mc13783);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mc13783_gpo_regulator_disable(struct regulator_dev *rdev)
|
|
{
|
|
struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
|
|
int id = rdev_get_id(rdev);
|
|
int ret;
|
|
u32 dis_val = 0;
|
|
|
|
dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
|
|
|
|
/* Power Gate disable value is 1 */
|
|
if (id == MC13783_REGU_PWGT1SPI ||
|
|
id == MC13783_REGU_PWGT2SPI)
|
|
dis_val = mc13783_regulators[id].enable_bit;
|
|
|
|
mc13783_lock(priv->mc13783);
|
|
ret = mc13783_powermisc_rmw(priv, mc13783_regulators[id].enable_bit,
|
|
dis_val);
|
|
mc13783_unlock(priv->mc13783);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int mc13783_gpo_regulator_is_enabled(struct regulator_dev *rdev)
|
|
{
|
|
struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
|
|
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);
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Power Gates state is stored in powermisc_pwgt_state
|
|
* where the meaning of bits is negated */
|
|
val = (val & ~MC13783_REG_POWERMISC_PWGTSPI_M) |
|
|
(priv->powermisc_pwgt_state ^ MC13783_REG_POWERMISC_PWGTSPI_M);
|
|
|
|
return (val & mc13783_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,
|
|
};
|
|
|
|
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 mc13783_regulator_platform_data *pdata =
|
|
dev_get_platdata(&pdev->dev);
|
|
struct mc13783_regulator_init_data *init_data;
|
|
int i, ret;
|
|
|
|
dev_dbg(&pdev->dev, "mc13783_regulator_probe id %d\n", pdev->id);
|
|
|
|
priv = kzalloc(sizeof(*priv) +
|
|
pdata->num_regulators * sizeof(priv->regulators[0]),
|
|
GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
priv->mc13783 = mc13783;
|
|
|
|
for (i = 0; i < pdata->num_regulators; i++) {
|
|
init_data = &pdata->regulators[i];
|
|
priv->regulators[i] = regulator_register(
|
|
&mc13783_regulators[init_data->id].desc,
|
|
&pdev->dev, init_data->init_data, priv);
|
|
|
|
if (IS_ERR(priv->regulators[i])) {
|
|
dev_err(&pdev->dev, "failed to register regulator %s\n",
|
|
mc13783_regulators[i].desc.name);
|
|
ret = PTR_ERR(priv->regulators[i]);
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
platform_set_drvdata(pdev, priv);
|
|
|
|
return 0;
|
|
err:
|
|
while (--i >= 0)
|
|
regulator_unregister(priv->regulators[i]);
|
|
|
|
kfree(priv);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int __devexit mc13783_regulator_remove(struct platform_device *pdev)
|
|
{
|
|
struct mc13783_regulator_priv *priv = platform_get_drvdata(pdev);
|
|
struct mc13783_regulator_platform_data *pdata =
|
|
dev_get_platdata(&pdev->dev);
|
|
int i;
|
|
|
|
platform_set_drvdata(pdev, NULL);
|
|
|
|
for (i = 0; i < pdata->num_regulators; i++)
|
|
regulator_unregister(priv->regulators[i]);
|
|
|
|
kfree(priv);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver mc13783_regulator_driver = {
|
|
.driver = {
|
|
.name = "mc13783-regulator",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.remove = __devexit_p(mc13783_regulator_remove),
|
|
.probe = mc13783_regulator_probe,
|
|
};
|
|
|
|
static int __init mc13783_regulator_init(void)
|
|
{
|
|
return platform_driver_register(&mc13783_regulator_driver);
|
|
}
|
|
subsys_initcall(mc13783_regulator_init);
|
|
|
|
static void __exit mc13783_regulator_exit(void)
|
|
{
|
|
platform_driver_unregister(&mc13783_regulator_driver);
|
|
}
|
|
module_exit(mc13783_regulator_exit);
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
|
|
MODULE_DESCRIPTION("Regulator Driver for Freescale MC13783 PMIC");
|
|
MODULE_ALIAS("platform:mc13783-regulator");
|