876 lines
26 KiB
C
876 lines
26 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) ST-Ericsson SA 2010
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*
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* Authors: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
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*
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* This file is based on drivers/regulator/ab8500.c
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*
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* AB8500 external regulators
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*
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* ab8500-ext supports the following regulators:
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* - VextSupply3
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/err.h>
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#include <linux/module.h>
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#include <linux/of.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/regulator/of_regulator.h>
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#include <linux/mfd/abx500.h>
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#include <linux/mfd/abx500/ab8500.h>
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#include <linux/regulator/ab8500.h>
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static struct regulator_consumer_supply ab8500_vaux1_consumers[] = {
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/* Main display, u8500 R3 uib */
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REGULATOR_SUPPLY("vddi", "mcde_disp_sony_acx424akp.0"),
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/* Main display, u8500 uib and ST uib */
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REGULATOR_SUPPLY("vdd1", "samsung_s6d16d0.0"),
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/* Secondary display, ST uib */
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REGULATOR_SUPPLY("vdd1", "samsung_s6d16d0.1"),
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/* SFH7741 proximity sensor */
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REGULATOR_SUPPLY("vcc", "gpio-keys.0"),
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/* BH1780GLS ambient light sensor */
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REGULATOR_SUPPLY("vcc", "2-0029"),
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/* lsm303dlh accelerometer */
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REGULATOR_SUPPLY("vdd", "2-0018"),
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/* lsm303dlhc accelerometer */
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REGULATOR_SUPPLY("vdd", "2-0019"),
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/* lsm303dlh magnetometer */
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REGULATOR_SUPPLY("vdd", "2-001e"),
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/* Rohm BU21013 Touchscreen devices */
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REGULATOR_SUPPLY("avdd", "3-005c"),
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REGULATOR_SUPPLY("avdd", "3-005d"),
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/* Synaptics RMI4 Touchscreen device */
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REGULATOR_SUPPLY("vdd", "3-004b"),
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/* L3G4200D Gyroscope device */
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REGULATOR_SUPPLY("vdd", "2-0068"),
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/* Ambient light sensor device */
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REGULATOR_SUPPLY("vdd", "3-0029"),
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/* Pressure sensor device */
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REGULATOR_SUPPLY("vdd", "2-005c"),
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/* Cypress TrueTouch Touchscreen device */
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REGULATOR_SUPPLY("vcpin", "spi8.0"),
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/* Camera device */
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REGULATOR_SUPPLY("vaux12v5", "mmio_camera"),
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};
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static struct regulator_consumer_supply ab8500_vaux2_consumers[] = {
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/* On-board eMMC power */
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REGULATOR_SUPPLY("vmmc", "sdi4"),
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/* AB8500 audio codec */
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REGULATOR_SUPPLY("vcc-N2158", "ab8500-codec.0"),
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/* AB8500 accessory detect 1 */
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REGULATOR_SUPPLY("vcc-N2158", "ab8500-acc-det.0"),
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/* AB8500 Tv-out device */
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REGULATOR_SUPPLY("vcc-N2158", "mcde_tv_ab8500.4"),
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/* AV8100 HDMI device */
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REGULATOR_SUPPLY("vcc-N2158", "av8100_hdmi.3"),
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};
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static struct regulator_consumer_supply ab8500_vaux3_consumers[] = {
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REGULATOR_SUPPLY("v-SD-STM", "stm"),
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/* External MMC slot power */
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REGULATOR_SUPPLY("vmmc", "sdi0"),
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};
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static struct regulator_consumer_supply ab8500_vtvout_consumers[] = {
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/* TV-out DENC supply */
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REGULATOR_SUPPLY("vtvout", "ab8500-denc.0"),
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/* Internal general-purpose ADC */
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REGULATOR_SUPPLY("vddadc", "ab8500-gpadc.0"),
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/* ADC for charger */
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REGULATOR_SUPPLY("vddadc", "ab8500-charger.0"),
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/* AB8500 Tv-out device */
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REGULATOR_SUPPLY("vtvout", "mcde_tv_ab8500.4"),
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};
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static struct regulator_consumer_supply ab8500_vaud_consumers[] = {
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/* AB8500 audio-codec main supply */
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REGULATOR_SUPPLY("vaud", "ab8500-codec.0"),
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};
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static struct regulator_consumer_supply ab8500_vamic1_consumers[] = {
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/* AB8500 audio-codec Mic1 supply */
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REGULATOR_SUPPLY("vamic1", "ab8500-codec.0"),
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};
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static struct regulator_consumer_supply ab8500_vamic2_consumers[] = {
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/* AB8500 audio-codec Mic2 supply */
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REGULATOR_SUPPLY("vamic2", "ab8500-codec.0"),
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};
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static struct regulator_consumer_supply ab8500_vdmic_consumers[] = {
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/* AB8500 audio-codec DMic supply */
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REGULATOR_SUPPLY("vdmic", "ab8500-codec.0"),
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};
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static struct regulator_consumer_supply ab8500_vintcore_consumers[] = {
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/* SoC core supply, no device */
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REGULATOR_SUPPLY("v-intcore", NULL),
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/* USB Transceiver */
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REGULATOR_SUPPLY("vddulpivio18", "ab8500-usb.0"),
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/* Handled by abx500 clk driver */
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REGULATOR_SUPPLY("v-intcore", "abx500-clk.0"),
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};
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static struct regulator_consumer_supply ab8500_vana_consumers[] = {
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/* DB8500 DSI */
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REGULATOR_SUPPLY("vdddsi1v2", "mcde"),
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REGULATOR_SUPPLY("vdddsi1v2", "b2r2_core"),
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REGULATOR_SUPPLY("vdddsi1v2", "b2r2_1_core"),
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REGULATOR_SUPPLY("vdddsi1v2", "dsilink.0"),
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REGULATOR_SUPPLY("vdddsi1v2", "dsilink.1"),
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REGULATOR_SUPPLY("vdddsi1v2", "dsilink.2"),
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/* DB8500 CSI */
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REGULATOR_SUPPLY("vddcsi1v2", "mmio_camera"),
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};
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/* ab8500 regulator register initialization */
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static struct ab8500_regulator_reg_init ab8500_reg_init[] = {
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/*
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* VanaRequestCtrl = HP/LP depending on VxRequest
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* VextSupply1RequestCtrl = HP/LP depending on VxRequest
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL2, 0xf0, 0x00),
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/*
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* VextSupply2RequestCtrl = HP/LP depending on VxRequest
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* VextSupply3RequestCtrl = HP/LP depending on VxRequest
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* Vaux1RequestCtrl = HP/LP depending on VxRequest
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* Vaux2RequestCtrl = HP/LP depending on VxRequest
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL3, 0xff, 0x00),
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/*
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* Vaux3RequestCtrl = HP/LP depending on VxRequest
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* SwHPReq = Control through SWValid disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUREQUESTCTRL4, 0x07, 0x00),
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/*
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* VanaSysClkReq1HPValid = disabled
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* Vaux1SysClkReq1HPValid = disabled
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* Vaux2SysClkReq1HPValid = disabled
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* Vaux3SysClkReq1HPValid = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQ1HPVALID1, 0xe8, 0x00),
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/*
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* VextSupply1SysClkReq1HPValid = disabled
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* VextSupply2SysClkReq1HPValid = disabled
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* VextSupply3SysClkReq1HPValid = SysClkReq1 controlled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQ1HPVALID2, 0x70, 0x40),
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/*
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* VanaHwHPReq1Valid = disabled
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* Vaux1HwHPreq1Valid = disabled
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* Vaux2HwHPReq1Valid = disabled
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* Vaux3HwHPReqValid = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ1VALID1, 0xe8, 0x00),
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/*
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* VextSupply1HwHPReq1Valid = disabled
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* VextSupply2HwHPReq1Valid = disabled
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* VextSupply3HwHPReq1Valid = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ1VALID2, 0x07, 0x00),
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/*
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* VanaHwHPReq2Valid = disabled
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* Vaux1HwHPReq2Valid = disabled
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* Vaux2HwHPReq2Valid = disabled
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* Vaux3HwHPReq2Valid = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ2VALID1, 0xe8, 0x00),
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/*
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* VextSupply1HwHPReq2Valid = disabled
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* VextSupply2HwHPReq2Valid = disabled
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* VextSupply3HwHPReq2Valid = HWReq2 controlled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUHWHPREQ2VALID2, 0x07, 0x04),
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/*
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* VanaSwHPReqValid = disabled
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* Vaux1SwHPReqValid = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUSWHPREQVALID1, 0xa0, 0x00),
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/*
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* Vaux2SwHPReqValid = disabled
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* Vaux3SwHPReqValid = disabled
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* VextSupply1SwHPReqValid = disabled
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* VextSupply2SwHPReqValid = disabled
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* VextSupply3SwHPReqValid = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUSWHPREQVALID2, 0x1f, 0x00),
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/*
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* SysClkReq2Valid1 = SysClkReq2 controlled
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* SysClkReq3Valid1 = disabled
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* SysClkReq4Valid1 = SysClkReq4 controlled
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* SysClkReq5Valid1 = disabled
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* SysClkReq6Valid1 = SysClkReq6 controlled
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* SysClkReq7Valid1 = disabled
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* SysClkReq8Valid1 = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQVALID1, 0xfe, 0x2a),
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/*
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* SysClkReq2Valid2 = disabled
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* SysClkReq3Valid2 = disabled
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* SysClkReq4Valid2 = disabled
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* SysClkReq5Valid2 = disabled
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* SysClkReq6Valid2 = SysClkReq6 controlled
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* SysClkReq7Valid2 = disabled
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* SysClkReq8Valid2 = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUSYSCLKREQVALID2, 0xfe, 0x20),
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/*
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* VTVoutEna = disabled
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* Vintcore12Ena = disabled
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* Vintcore12Sel = 1.25 V
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* Vintcore12LP = inactive (HP)
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* VTVoutLP = inactive (HP)
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUMISC1, 0xfe, 0x10),
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/*
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* VaudioEna = disabled
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* VdmicEna = disabled
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* Vamic1Ena = disabled
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* Vamic2Ena = disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_VAUDIOSUPPLY, 0x1e, 0x00),
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/*
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* Vamic1_dzout = high-Z when Vamic1 is disabled
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* Vamic2_dzout = high-Z when Vamic2 is disabled
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUCTRL1VAMIC, 0x03, 0x00),
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/*
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* VPll = Hw controlled (NOTE! PRCMU bits)
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* VanaRegu = force off
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*/
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INIT_REGULATOR_REGISTER(AB8500_VPLLVANAREGU, 0x0f, 0x02),
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/*
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* VrefDDREna = disabled
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* VrefDDRSleepMode = inactive (no pulldown)
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*/
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INIT_REGULATOR_REGISTER(AB8500_VREFDDR, 0x03, 0x00),
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/*
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* VextSupply1Regu = force LP
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* VextSupply2Regu = force OFF
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* VextSupply3Regu = force HP (-> STBB2=LP and TPS=LP)
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* ExtSupply2Bypass = ExtSupply12LPn ball is 0 when Ena is 0
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* ExtSupply3Bypass = ExtSupply3LPn ball is 0 when Ena is 0
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*/
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INIT_REGULATOR_REGISTER(AB8500_EXTSUPPLYREGU, 0xff, 0x13),
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/*
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* Vaux1Regu = force HP
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* Vaux2Regu = force off
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*/
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INIT_REGULATOR_REGISTER(AB8500_VAUX12REGU, 0x0f, 0x01),
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/*
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* Vaux3Regu = force off
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*/
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INIT_REGULATOR_REGISTER(AB8500_VRF1VAUX3REGU, 0x03, 0x00),
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/*
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* Vaux1Sel = 2.8 V
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*/
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INIT_REGULATOR_REGISTER(AB8500_VAUX1SEL, 0x0f, 0x0C),
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/*
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* Vaux2Sel = 2.9 V
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*/
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INIT_REGULATOR_REGISTER(AB8500_VAUX2SEL, 0x0f, 0x0d),
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/*
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* Vaux3Sel = 2.91 V
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*/
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INIT_REGULATOR_REGISTER(AB8500_VRF1VAUX3SEL, 0x07, 0x07),
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/*
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* VextSupply12LP = disabled (no LP)
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUCTRL2SPARE, 0x01, 0x00),
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/*
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* Vaux1Disch = short discharge time
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* Vaux2Disch = short discharge time
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* Vaux3Disch = short discharge time
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* Vintcore12Disch = short discharge time
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* VTVoutDisch = short discharge time
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* VaudioDisch = short discharge time
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUCTRLDISCH, 0xfc, 0x00),
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/*
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* VanaDisch = short discharge time
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* VdmicPullDownEna = pulldown disabled when Vdmic is disabled
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* VdmicDisch = short discharge time
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*/
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INIT_REGULATOR_REGISTER(AB8500_REGUCTRLDISCH2, 0x16, 0x00),
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};
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/* AB8500 regulators */
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static struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS] = {
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/* supplies to the display/camera */
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[AB8500_LDO_AUX1] = {
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.supply_regulator = "ab8500-ext-supply3",
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.constraints = {
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.name = "V-DISPLAY",
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.min_uV = 2800000,
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.max_uV = 3300000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
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REGULATOR_CHANGE_STATUS,
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.boot_on = 1, /* display is on at boot */
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},
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.num_consumer_supplies = ARRAY_SIZE(ab8500_vaux1_consumers),
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.consumer_supplies = ab8500_vaux1_consumers,
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},
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/* supplies to the on-board eMMC */
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[AB8500_LDO_AUX2] = {
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.supply_regulator = "ab8500-ext-supply3",
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.constraints = {
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.name = "V-eMMC1",
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.min_uV = 1100000,
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.max_uV = 3300000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
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REGULATOR_CHANGE_STATUS |
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REGULATOR_CHANGE_MODE,
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.valid_modes_mask = REGULATOR_MODE_NORMAL |
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REGULATOR_MODE_IDLE,
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},
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.num_consumer_supplies = ARRAY_SIZE(ab8500_vaux2_consumers),
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.consumer_supplies = ab8500_vaux2_consumers,
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},
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/* supply for VAUX3, supplies to SDcard slots */
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[AB8500_LDO_AUX3] = {
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.supply_regulator = "ab8500-ext-supply3",
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.constraints = {
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.name = "V-MMC-SD",
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.min_uV = 1100000,
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.max_uV = 3300000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
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REGULATOR_CHANGE_STATUS |
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REGULATOR_CHANGE_MODE,
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.valid_modes_mask = REGULATOR_MODE_NORMAL |
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REGULATOR_MODE_IDLE,
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},
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.num_consumer_supplies = ARRAY_SIZE(ab8500_vaux3_consumers),
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.consumer_supplies = ab8500_vaux3_consumers,
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},
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/* supply for tvout, gpadc, TVOUT LDO */
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[AB8500_LDO_TVOUT] = {
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.constraints = {
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.name = "V-TVOUT",
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.valid_ops_mask = REGULATOR_CHANGE_STATUS,
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},
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.num_consumer_supplies = ARRAY_SIZE(ab8500_vtvout_consumers),
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.consumer_supplies = ab8500_vtvout_consumers,
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},
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/* supply for ab8500-vaudio, VAUDIO LDO */
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[AB8500_LDO_AUDIO] = {
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.constraints = {
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.name = "V-AUD",
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.valid_ops_mask = REGULATOR_CHANGE_STATUS,
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},
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.num_consumer_supplies = ARRAY_SIZE(ab8500_vaud_consumers),
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.consumer_supplies = ab8500_vaud_consumers,
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},
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/* supply for v-anamic1 VAMic1-LDO */
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[AB8500_LDO_ANAMIC1] = {
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.constraints = {
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.name = "V-AMIC1",
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.valid_ops_mask = REGULATOR_CHANGE_STATUS,
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},
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.num_consumer_supplies = ARRAY_SIZE(ab8500_vamic1_consumers),
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.consumer_supplies = ab8500_vamic1_consumers,
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},
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/* supply for v-amic2, VAMIC2 LDO, reuse constants for AMIC1 */
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[AB8500_LDO_ANAMIC2] = {
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.constraints = {
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.name = "V-AMIC2",
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.valid_ops_mask = REGULATOR_CHANGE_STATUS,
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},
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.num_consumer_supplies = ARRAY_SIZE(ab8500_vamic2_consumers),
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.consumer_supplies = ab8500_vamic2_consumers,
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},
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/* supply for v-dmic, VDMIC LDO */
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[AB8500_LDO_DMIC] = {
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.constraints = {
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.name = "V-DMIC",
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.valid_ops_mask = REGULATOR_CHANGE_STATUS,
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},
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.num_consumer_supplies = ARRAY_SIZE(ab8500_vdmic_consumers),
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.consumer_supplies = ab8500_vdmic_consumers,
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},
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/* supply for v-intcore12, VINTCORE12 LDO */
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[AB8500_LDO_INTCORE] = {
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.constraints = {
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.name = "V-INTCORE",
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.min_uV = 1250000,
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.max_uV = 1350000,
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.input_uV = 1800000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
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REGULATOR_CHANGE_STATUS |
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REGULATOR_CHANGE_MODE |
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REGULATOR_CHANGE_DRMS,
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.valid_modes_mask = REGULATOR_MODE_NORMAL |
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REGULATOR_MODE_IDLE,
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},
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.num_consumer_supplies = ARRAY_SIZE(ab8500_vintcore_consumers),
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.consumer_supplies = ab8500_vintcore_consumers,
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},
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/* supply for U8500 CSI-DSI, VANA LDO */
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[AB8500_LDO_ANA] = {
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.constraints = {
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.name = "V-CSI-DSI",
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.valid_ops_mask = REGULATOR_CHANGE_STATUS,
|
|
},
|
|
.num_consumer_supplies = ARRAY_SIZE(ab8500_vana_consumers),
|
|
.consumer_supplies = ab8500_vana_consumers,
|
|
},
|
|
};
|
|
|
|
/* supply for VextSupply3 */
|
|
static struct regulator_consumer_supply ab8500_ext_supply3_consumers[] = {
|
|
/* SIM supply for 3 V SIM cards */
|
|
REGULATOR_SUPPLY("vinvsim", "sim-detect.0"),
|
|
};
|
|
|
|
/*
|
|
* AB8500 external regulators
|
|
*/
|
|
static struct regulator_init_data ab8500_ext_regulators[] = {
|
|
/* fixed Vbat supplies VSMPS1_EXT_1V8 */
|
|
[AB8500_EXT_SUPPLY1] = {
|
|
.constraints = {
|
|
.name = "ab8500-ext-supply1",
|
|
.min_uV = 1800000,
|
|
.max_uV = 1800000,
|
|
.initial_mode = REGULATOR_MODE_IDLE,
|
|
.boot_on = 1,
|
|
.always_on = 1,
|
|
},
|
|
},
|
|
/* fixed Vbat supplies VSMPS2_EXT_1V36 and VSMPS5_EXT_1V15 */
|
|
[AB8500_EXT_SUPPLY2] = {
|
|
.constraints = {
|
|
.name = "ab8500-ext-supply2",
|
|
.min_uV = 1360000,
|
|
.max_uV = 1360000,
|
|
},
|
|
},
|
|
/* fixed Vbat supplies VSMPS3_EXT_3V4 and VSMPS4_EXT_3V4 */
|
|
[AB8500_EXT_SUPPLY3] = {
|
|
.constraints = {
|
|
.name = "ab8500-ext-supply3",
|
|
.min_uV = 3400000,
|
|
.max_uV = 3400000,
|
|
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
|
|
.boot_on = 1,
|
|
},
|
|
.num_consumer_supplies =
|
|
ARRAY_SIZE(ab8500_ext_supply3_consumers),
|
|
.consumer_supplies = ab8500_ext_supply3_consumers,
|
|
},
|
|
};
|
|
|
|
static struct ab8500_regulator_platform_data ab8500_regulator_plat_data = {
|
|
.reg_init = ab8500_reg_init,
|
|
.num_reg_init = ARRAY_SIZE(ab8500_reg_init),
|
|
.regulator = ab8500_regulators,
|
|
.num_regulator = ARRAY_SIZE(ab8500_regulators),
|
|
.ext_regulator = ab8500_ext_regulators,
|
|
.num_ext_regulator = ARRAY_SIZE(ab8500_ext_regulators),
|
|
};
|
|
|
|
/**
|
|
* struct ab8500_ext_regulator_info - ab8500 regulator information
|
|
* @dev: device pointer
|
|
* @desc: regulator description
|
|
* @cfg: regulator configuration (extension of regulator FW configuration)
|
|
* @update_bank: bank to control on/off
|
|
* @update_reg: register to control on/off
|
|
* @update_mask: mask to enable/disable and set mode of regulator
|
|
* @update_val: bits holding the regulator current mode
|
|
* @update_val_hp: bits to set EN pin active (LPn pin deactive)
|
|
* normally this means high power mode
|
|
* @update_val_lp: bits to set EN pin active and LPn pin active
|
|
* normally this means low power mode
|
|
* @update_val_hw: bits to set regulator pins in HW control
|
|
* SysClkReq pins and logic will choose mode
|
|
*/
|
|
struct ab8500_ext_regulator_info {
|
|
struct device *dev;
|
|
struct regulator_desc desc;
|
|
struct ab8500_ext_regulator_cfg *cfg;
|
|
u8 update_bank;
|
|
u8 update_reg;
|
|
u8 update_mask;
|
|
u8 update_val;
|
|
u8 update_val_hp;
|
|
u8 update_val_lp;
|
|
u8 update_val_hw;
|
|
};
|
|
|
|
static int ab8500_ext_regulator_enable(struct regulator_dev *rdev)
|
|
{
|
|
int ret;
|
|
struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
|
|
u8 regval;
|
|
|
|
if (info == NULL) {
|
|
dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* To satisfy both HW high power request and SW request, the regulator
|
|
* must be on in high power.
|
|
*/
|
|
if (info->cfg && info->cfg->hwreq)
|
|
regval = info->update_val_hp;
|
|
else
|
|
regval = info->update_val;
|
|
|
|
ret = abx500_mask_and_set_register_interruptible(info->dev,
|
|
info->update_bank, info->update_reg,
|
|
info->update_mask, regval);
|
|
if (ret < 0) {
|
|
dev_err(rdev_get_dev(rdev),
|
|
"couldn't set enable bits for regulator\n");
|
|
return ret;
|
|
}
|
|
|
|
dev_dbg(rdev_get_dev(rdev),
|
|
"%s-enable (bank, reg, mask, value): 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
|
|
info->desc.name, info->update_bank, info->update_reg,
|
|
info->update_mask, regval);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ab8500_ext_regulator_disable(struct regulator_dev *rdev)
|
|
{
|
|
int ret;
|
|
struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
|
|
u8 regval;
|
|
|
|
if (info == NULL) {
|
|
dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Set the regulator in HW request mode if configured
|
|
*/
|
|
if (info->cfg && info->cfg->hwreq)
|
|
regval = info->update_val_hw;
|
|
else
|
|
regval = 0;
|
|
|
|
ret = abx500_mask_and_set_register_interruptible(info->dev,
|
|
info->update_bank, info->update_reg,
|
|
info->update_mask, regval);
|
|
if (ret < 0) {
|
|
dev_err(rdev_get_dev(rdev),
|
|
"couldn't set disable bits for regulator\n");
|
|
return ret;
|
|
}
|
|
|
|
dev_dbg(rdev_get_dev(rdev), "%s-disable (bank, reg, mask, value):"
|
|
" 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
|
|
info->desc.name, info->update_bank, info->update_reg,
|
|
info->update_mask, regval);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ab8500_ext_regulator_is_enabled(struct regulator_dev *rdev)
|
|
{
|
|
int ret;
|
|
struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
|
|
u8 regval;
|
|
|
|
if (info == NULL) {
|
|
dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = abx500_get_register_interruptible(info->dev,
|
|
info->update_bank, info->update_reg, ®val);
|
|
if (ret < 0) {
|
|
dev_err(rdev_get_dev(rdev),
|
|
"couldn't read 0x%x register\n", info->update_reg);
|
|
return ret;
|
|
}
|
|
|
|
dev_dbg(rdev_get_dev(rdev), "%s-is_enabled (bank, reg, mask, value):"
|
|
" 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
|
|
info->desc.name, info->update_bank, info->update_reg,
|
|
info->update_mask, regval);
|
|
|
|
if (((regval & info->update_mask) == info->update_val_lp) ||
|
|
((regval & info->update_mask) == info->update_val_hp))
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static int ab8500_ext_regulator_set_mode(struct regulator_dev *rdev,
|
|
unsigned int mode)
|
|
{
|
|
int ret = 0;
|
|
struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
|
|
u8 regval;
|
|
|
|
if (info == NULL) {
|
|
dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (mode) {
|
|
case REGULATOR_MODE_NORMAL:
|
|
regval = info->update_val_hp;
|
|
break;
|
|
case REGULATOR_MODE_IDLE:
|
|
regval = info->update_val_lp;
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* If regulator is enabled and info->cfg->hwreq is set, the regulator
|
|
must be on in high power, so we don't need to write the register with
|
|
the same value.
|
|
*/
|
|
if (ab8500_ext_regulator_is_enabled(rdev) &&
|
|
!(info->cfg && info->cfg->hwreq)) {
|
|
ret = abx500_mask_and_set_register_interruptible(info->dev,
|
|
info->update_bank, info->update_reg,
|
|
info->update_mask, regval);
|
|
if (ret < 0) {
|
|
dev_err(rdev_get_dev(rdev),
|
|
"Could not set regulator mode.\n");
|
|
return ret;
|
|
}
|
|
|
|
dev_dbg(rdev_get_dev(rdev),
|
|
"%s-set_mode (bank, reg, mask, value): "
|
|
"0x%x, 0x%x, 0x%x, 0x%x\n",
|
|
info->desc.name, info->update_bank, info->update_reg,
|
|
info->update_mask, regval);
|
|
}
|
|
|
|
info->update_val = regval;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static unsigned int ab8500_ext_regulator_get_mode(struct regulator_dev *rdev)
|
|
{
|
|
struct ab8500_ext_regulator_info *info = rdev_get_drvdata(rdev);
|
|
int ret;
|
|
|
|
if (info == NULL) {
|
|
dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (info->update_val == info->update_val_hp)
|
|
ret = REGULATOR_MODE_NORMAL;
|
|
else if (info->update_val == info->update_val_lp)
|
|
ret = REGULATOR_MODE_IDLE;
|
|
else
|
|
ret = -EINVAL;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ab8500_ext_set_voltage(struct regulator_dev *rdev, int min_uV,
|
|
int max_uV, unsigned *selector)
|
|
{
|
|
struct regulation_constraints *regu_constraints = rdev->constraints;
|
|
|
|
if (!regu_constraints) {
|
|
dev_err(rdev_get_dev(rdev), "No regulator constraints\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (regu_constraints->min_uV == min_uV &&
|
|
regu_constraints->max_uV == max_uV)
|
|
return 0;
|
|
|
|
dev_err(rdev_get_dev(rdev),
|
|
"Requested min %duV max %duV != constrained min %duV max %duV\n",
|
|
min_uV, max_uV,
|
|
regu_constraints->min_uV, regu_constraints->max_uV);
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int ab8500_ext_list_voltage(struct regulator_dev *rdev,
|
|
unsigned selector)
|
|
{
|
|
struct regulation_constraints *regu_constraints = rdev->constraints;
|
|
|
|
if (regu_constraints == NULL) {
|
|
dev_err(rdev_get_dev(rdev), "regulator constraints null pointer\n");
|
|
return -EINVAL;
|
|
}
|
|
/* return the uV for the fixed regulators */
|
|
if (regu_constraints->min_uV && regu_constraints->max_uV) {
|
|
if (regu_constraints->min_uV == regu_constraints->max_uV)
|
|
return regu_constraints->min_uV;
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
static const struct regulator_ops ab8500_ext_regulator_ops = {
|
|
.enable = ab8500_ext_regulator_enable,
|
|
.disable = ab8500_ext_regulator_disable,
|
|
.is_enabled = ab8500_ext_regulator_is_enabled,
|
|
.set_mode = ab8500_ext_regulator_set_mode,
|
|
.get_mode = ab8500_ext_regulator_get_mode,
|
|
.set_voltage = ab8500_ext_set_voltage,
|
|
.list_voltage = ab8500_ext_list_voltage,
|
|
};
|
|
|
|
static struct ab8500_ext_regulator_info
|
|
ab8500_ext_regulator_info[AB8500_NUM_EXT_REGULATORS] = {
|
|
[AB8500_EXT_SUPPLY1] = {
|
|
.desc = {
|
|
.name = "VEXTSUPPLY1",
|
|
.of_match = of_match_ptr("ab8500_ext1"),
|
|
.ops = &ab8500_ext_regulator_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.id = AB8500_EXT_SUPPLY1,
|
|
.owner = THIS_MODULE,
|
|
.n_voltages = 1,
|
|
},
|
|
.update_bank = 0x04,
|
|
.update_reg = 0x08,
|
|
.update_mask = 0x03,
|
|
.update_val = 0x01,
|
|
.update_val_hp = 0x01,
|
|
.update_val_lp = 0x03,
|
|
.update_val_hw = 0x02,
|
|
},
|
|
[AB8500_EXT_SUPPLY2] = {
|
|
.desc = {
|
|
.name = "VEXTSUPPLY2",
|
|
.of_match = of_match_ptr("ab8500_ext2"),
|
|
.ops = &ab8500_ext_regulator_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.id = AB8500_EXT_SUPPLY2,
|
|
.owner = THIS_MODULE,
|
|
.n_voltages = 1,
|
|
},
|
|
.update_bank = 0x04,
|
|
.update_reg = 0x08,
|
|
.update_mask = 0x0c,
|
|
.update_val = 0x04,
|
|
.update_val_hp = 0x04,
|
|
.update_val_lp = 0x0c,
|
|
.update_val_hw = 0x08,
|
|
},
|
|
[AB8500_EXT_SUPPLY3] = {
|
|
.desc = {
|
|
.name = "VEXTSUPPLY3",
|
|
.of_match = of_match_ptr("ab8500_ext3"),
|
|
.ops = &ab8500_ext_regulator_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.id = AB8500_EXT_SUPPLY3,
|
|
.owner = THIS_MODULE,
|
|
.n_voltages = 1,
|
|
},
|
|
.update_bank = 0x04,
|
|
.update_reg = 0x08,
|
|
.update_mask = 0x30,
|
|
.update_val = 0x10,
|
|
.update_val_hp = 0x10,
|
|
.update_val_lp = 0x30,
|
|
.update_val_hw = 0x20,
|
|
},
|
|
};
|
|
|
|
static int ab8500_ext_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
|
|
struct ab8500_regulator_platform_data *pdata = &ab8500_regulator_plat_data;
|
|
struct regulator_config config = { };
|
|
struct regulator_dev *rdev;
|
|
int i;
|
|
|
|
if (!ab8500) {
|
|
dev_err(&pdev->dev, "null mfd parent\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* make sure the platform data has the correct size */
|
|
if (pdata->num_ext_regulator != ARRAY_SIZE(ab8500_ext_regulator_info)) {
|
|
dev_err(&pdev->dev, "Configuration error: size mismatch.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* check for AB8500 2.x */
|
|
if (is_ab8500_2p0_or_earlier(ab8500)) {
|
|
struct ab8500_ext_regulator_info *info;
|
|
|
|
/* VextSupply3LPn is inverted on AB8500 2.x */
|
|
info = &ab8500_ext_regulator_info[AB8500_EXT_SUPPLY3];
|
|
info->update_val = 0x30;
|
|
info->update_val_hp = 0x30;
|
|
info->update_val_lp = 0x10;
|
|
}
|
|
|
|
/* register all regulators */
|
|
for (i = 0; i < ARRAY_SIZE(ab8500_ext_regulator_info); i++) {
|
|
struct ab8500_ext_regulator_info *info = NULL;
|
|
|
|
/* assign per-regulator data */
|
|
info = &ab8500_ext_regulator_info[i];
|
|
info->dev = &pdev->dev;
|
|
info->cfg = (struct ab8500_ext_regulator_cfg *)
|
|
pdata->ext_regulator[i].driver_data;
|
|
|
|
config.dev = &pdev->dev;
|
|
config.driver_data = info;
|
|
config.init_data = &pdata->ext_regulator[i];
|
|
|
|
/* register regulator with framework */
|
|
rdev = devm_regulator_register(&pdev->dev, &info->desc,
|
|
&config);
|
|
if (IS_ERR(rdev)) {
|
|
dev_err(&pdev->dev, "failed to register regulator %s\n",
|
|
info->desc.name);
|
|
return PTR_ERR(rdev);
|
|
}
|
|
|
|
dev_dbg(&pdev->dev, "%s-probed\n", info->desc.name);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver ab8500_ext_regulator_driver = {
|
|
.probe = ab8500_ext_regulator_probe,
|
|
.driver = {
|
|
.name = "ab8500-ext-regulator",
|
|
},
|
|
};
|
|
|
|
static int __init ab8500_ext_regulator_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = platform_driver_register(&ab8500_ext_regulator_driver);
|
|
if (ret)
|
|
pr_err("Failed to register ab8500 ext regulator: %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
subsys_initcall(ab8500_ext_regulator_init);
|
|
|
|
static void __exit ab8500_ext_regulator_exit(void)
|
|
{
|
|
platform_driver_unregister(&ab8500_ext_regulator_driver);
|
|
}
|
|
module_exit(ab8500_ext_regulator_exit);
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_AUTHOR("Bengt Jonsson <bengt.g.jonsson@stericsson.com>");
|
|
MODULE_DESCRIPTION("AB8500 external regulator driver");
|
|
MODULE_ALIAS("platform:ab8500-ext-regulator");
|