1277 lines
33 KiB
C
1277 lines
33 KiB
C
/*
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* tps65910.c -- TI tps65910
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*
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* Copyright 2010 Texas Instruments Inc.
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*
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* Author: Graeme Gregory <gg@slimlogic.co.uk>
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* Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/err.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/slab.h>
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#include <linux/gpio.h>
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#include <linux/mfd/tps65910.h>
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#include <linux/regulator/of_regulator.h>
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#define TPS65910_SUPPLY_STATE_ENABLED 0x1
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#define EXT_SLEEP_CONTROL (TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1 | \
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TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2 | \
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TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3 | \
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TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP)
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/* supported VIO voltages in microvolts */
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static const unsigned int VIO_VSEL_table[] = {
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1500000, 1800000, 2500000, 3300000,
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};
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/* VSEL tables for TPS65910 specific LDOs and dcdc's */
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/* supported VRTC voltages in microvolts */
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static const unsigned int VRTC_VSEL_table[] = {
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1800000,
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};
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/* supported VDD3 voltages in microvolts */
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static const unsigned int VDD3_VSEL_table[] = {
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5000000,
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};
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/* supported VDIG1 voltages in microvolts */
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static const unsigned int VDIG1_VSEL_table[] = {
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1200000, 1500000, 1800000, 2700000,
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};
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/* supported VDIG2 voltages in microvolts */
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static const unsigned int VDIG2_VSEL_table[] = {
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1000000, 1100000, 1200000, 1800000,
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};
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/* supported VPLL voltages in microvolts */
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static const unsigned int VPLL_VSEL_table[] = {
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1000000, 1100000, 1800000, 2500000,
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};
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/* supported VDAC voltages in microvolts */
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static const unsigned int VDAC_VSEL_table[] = {
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1800000, 2600000, 2800000, 2850000,
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};
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/* supported VAUX1 voltages in microvolts */
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static const unsigned int VAUX1_VSEL_table[] = {
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1800000, 2500000, 2800000, 2850000,
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};
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/* supported VAUX2 voltages in microvolts */
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static const unsigned int VAUX2_VSEL_table[] = {
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1800000, 2800000, 2900000, 3300000,
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};
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/* supported VAUX33 voltages in microvolts */
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static const unsigned int VAUX33_VSEL_table[] = {
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1800000, 2000000, 2800000, 3300000,
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};
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/* supported VMMC voltages in microvolts */
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static const unsigned int VMMC_VSEL_table[] = {
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1800000, 2800000, 3000000, 3300000,
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};
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/* supported BBCH voltages in microvolts */
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static const unsigned int VBB_VSEL_table[] = {
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3000000, 2520000, 3150000, 5000000,
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};
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struct tps_info {
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const char *name;
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const char *vin_name;
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u8 n_voltages;
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const unsigned int *voltage_table;
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int enable_time_us;
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};
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static struct tps_info tps65910_regs[] = {
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{
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.name = "vrtc",
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.vin_name = "vcc7",
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.n_voltages = ARRAY_SIZE(VRTC_VSEL_table),
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.voltage_table = VRTC_VSEL_table,
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.enable_time_us = 2200,
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},
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{
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.name = "vio",
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.vin_name = "vccio",
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.n_voltages = ARRAY_SIZE(VIO_VSEL_table),
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.voltage_table = VIO_VSEL_table,
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.enable_time_us = 350,
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},
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{
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.name = "vdd1",
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.vin_name = "vcc1",
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.enable_time_us = 350,
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},
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{
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.name = "vdd2",
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.vin_name = "vcc2",
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.enable_time_us = 350,
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},
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{
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.name = "vdd3",
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.n_voltages = ARRAY_SIZE(VDD3_VSEL_table),
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.voltage_table = VDD3_VSEL_table,
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.enable_time_us = 200,
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},
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{
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.name = "vdig1",
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.vin_name = "vcc6",
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.n_voltages = ARRAY_SIZE(VDIG1_VSEL_table),
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.voltage_table = VDIG1_VSEL_table,
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.enable_time_us = 100,
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},
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{
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.name = "vdig2",
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.vin_name = "vcc6",
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.n_voltages = ARRAY_SIZE(VDIG2_VSEL_table),
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.voltage_table = VDIG2_VSEL_table,
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.enable_time_us = 100,
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},
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{
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.name = "vpll",
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.vin_name = "vcc5",
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.n_voltages = ARRAY_SIZE(VPLL_VSEL_table),
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.voltage_table = VPLL_VSEL_table,
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.enable_time_us = 100,
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},
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{
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.name = "vdac",
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.vin_name = "vcc5",
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.n_voltages = ARRAY_SIZE(VDAC_VSEL_table),
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.voltage_table = VDAC_VSEL_table,
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.enable_time_us = 100,
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},
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{
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.name = "vaux1",
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.vin_name = "vcc4",
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.n_voltages = ARRAY_SIZE(VAUX1_VSEL_table),
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.voltage_table = VAUX1_VSEL_table,
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.enable_time_us = 100,
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},
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{
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.name = "vaux2",
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.vin_name = "vcc4",
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.n_voltages = ARRAY_SIZE(VAUX2_VSEL_table),
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.voltage_table = VAUX2_VSEL_table,
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.enable_time_us = 100,
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},
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{
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.name = "vaux33",
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.vin_name = "vcc3",
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.n_voltages = ARRAY_SIZE(VAUX33_VSEL_table),
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.voltage_table = VAUX33_VSEL_table,
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.enable_time_us = 100,
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},
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{
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.name = "vmmc",
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.vin_name = "vcc3",
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.n_voltages = ARRAY_SIZE(VMMC_VSEL_table),
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.voltage_table = VMMC_VSEL_table,
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.enable_time_us = 100,
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},
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{
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.name = "vbb",
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.vin_name = "vcc7",
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.n_voltages = ARRAY_SIZE(VBB_VSEL_table),
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.voltage_table = VBB_VSEL_table,
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},
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};
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static struct tps_info tps65911_regs[] = {
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{
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.name = "vrtc",
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.vin_name = "vcc7",
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.enable_time_us = 2200,
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},
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{
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.name = "vio",
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.vin_name = "vccio",
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.n_voltages = ARRAY_SIZE(VIO_VSEL_table),
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.voltage_table = VIO_VSEL_table,
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.enable_time_us = 350,
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},
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{
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.name = "vdd1",
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.vin_name = "vcc1",
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.n_voltages = 0x4C,
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.enable_time_us = 350,
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},
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{
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.name = "vdd2",
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.vin_name = "vcc2",
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.n_voltages = 0x4C,
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.enable_time_us = 350,
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},
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{
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.name = "vddctrl",
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.n_voltages = 0x44,
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.enable_time_us = 900,
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},
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{
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.name = "ldo1",
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.vin_name = "vcc6",
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.n_voltages = 0x33,
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.enable_time_us = 420,
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},
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{
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.name = "ldo2",
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.vin_name = "vcc6",
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.n_voltages = 0x33,
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.enable_time_us = 420,
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},
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{
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.name = "ldo3",
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.vin_name = "vcc5",
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.n_voltages = 0x1A,
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.enable_time_us = 230,
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},
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{
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.name = "ldo4",
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.vin_name = "vcc5",
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.n_voltages = 0x33,
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.enable_time_us = 230,
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},
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{
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.name = "ldo5",
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.vin_name = "vcc4",
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.n_voltages = 0x1A,
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.enable_time_us = 230,
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},
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{
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.name = "ldo6",
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.vin_name = "vcc3",
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.n_voltages = 0x1A,
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.enable_time_us = 230,
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},
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{
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.name = "ldo7",
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.vin_name = "vcc3",
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.n_voltages = 0x1A,
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.enable_time_us = 230,
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},
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{
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.name = "ldo8",
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.vin_name = "vcc3",
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.n_voltages = 0x1A,
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.enable_time_us = 230,
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},
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};
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#define EXT_CONTROL_REG_BITS(id, regs_offs, bits) (((regs_offs) << 8) | (bits))
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static unsigned int tps65910_ext_sleep_control[] = {
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0,
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EXT_CONTROL_REG_BITS(VIO, 1, 0),
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EXT_CONTROL_REG_BITS(VDD1, 1, 1),
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EXT_CONTROL_REG_BITS(VDD2, 1, 2),
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EXT_CONTROL_REG_BITS(VDD3, 1, 3),
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EXT_CONTROL_REG_BITS(VDIG1, 0, 1),
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EXT_CONTROL_REG_BITS(VDIG2, 0, 2),
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EXT_CONTROL_REG_BITS(VPLL, 0, 6),
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EXT_CONTROL_REG_BITS(VDAC, 0, 7),
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EXT_CONTROL_REG_BITS(VAUX1, 0, 3),
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EXT_CONTROL_REG_BITS(VAUX2, 0, 4),
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EXT_CONTROL_REG_BITS(VAUX33, 0, 5),
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EXT_CONTROL_REG_BITS(VMMC, 0, 0),
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};
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static unsigned int tps65911_ext_sleep_control[] = {
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0,
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EXT_CONTROL_REG_BITS(VIO, 1, 0),
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EXT_CONTROL_REG_BITS(VDD1, 1, 1),
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EXT_CONTROL_REG_BITS(VDD2, 1, 2),
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EXT_CONTROL_REG_BITS(VDDCTRL, 1, 3),
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EXT_CONTROL_REG_BITS(LDO1, 0, 1),
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EXT_CONTROL_REG_BITS(LDO2, 0, 2),
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EXT_CONTROL_REG_BITS(LDO3, 0, 7),
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EXT_CONTROL_REG_BITS(LDO4, 0, 6),
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EXT_CONTROL_REG_BITS(LDO5, 0, 3),
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EXT_CONTROL_REG_BITS(LDO6, 0, 0),
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EXT_CONTROL_REG_BITS(LDO7, 0, 5),
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EXT_CONTROL_REG_BITS(LDO8, 0, 4),
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};
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struct tps65910_reg {
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struct regulator_desc *desc;
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struct tps65910 *mfd;
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struct regulator_dev **rdev;
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struct tps_info **info;
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int num_regulators;
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int mode;
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int (*get_ctrl_reg)(int);
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unsigned int *ext_sleep_control;
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unsigned int board_ext_control[TPS65910_NUM_REGS];
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};
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static int tps65910_get_ctrl_register(int id)
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{
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switch (id) {
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case TPS65910_REG_VRTC:
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return TPS65910_VRTC;
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case TPS65910_REG_VIO:
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return TPS65910_VIO;
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case TPS65910_REG_VDD1:
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return TPS65910_VDD1;
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case TPS65910_REG_VDD2:
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return TPS65910_VDD2;
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case TPS65910_REG_VDD3:
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return TPS65910_VDD3;
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case TPS65910_REG_VDIG1:
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return TPS65910_VDIG1;
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case TPS65910_REG_VDIG2:
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return TPS65910_VDIG2;
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case TPS65910_REG_VPLL:
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return TPS65910_VPLL;
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case TPS65910_REG_VDAC:
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return TPS65910_VDAC;
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case TPS65910_REG_VAUX1:
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return TPS65910_VAUX1;
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case TPS65910_REG_VAUX2:
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return TPS65910_VAUX2;
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case TPS65910_REG_VAUX33:
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return TPS65910_VAUX33;
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case TPS65910_REG_VMMC:
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return TPS65910_VMMC;
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case TPS65910_REG_VBB:
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return TPS65910_BBCH;
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default:
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return -EINVAL;
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}
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}
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static int tps65911_get_ctrl_register(int id)
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{
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switch (id) {
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case TPS65910_REG_VRTC:
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return TPS65910_VRTC;
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case TPS65910_REG_VIO:
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return TPS65910_VIO;
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case TPS65910_REG_VDD1:
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return TPS65910_VDD1;
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case TPS65910_REG_VDD2:
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return TPS65910_VDD2;
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case TPS65911_REG_VDDCTRL:
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return TPS65911_VDDCTRL;
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case TPS65911_REG_LDO1:
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return TPS65911_LDO1;
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case TPS65911_REG_LDO2:
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return TPS65911_LDO2;
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case TPS65911_REG_LDO3:
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return TPS65911_LDO3;
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case TPS65911_REG_LDO4:
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return TPS65911_LDO4;
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case TPS65911_REG_LDO5:
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return TPS65911_LDO5;
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case TPS65911_REG_LDO6:
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return TPS65911_LDO6;
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case TPS65911_REG_LDO7:
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return TPS65911_LDO7;
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case TPS65911_REG_LDO8:
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return TPS65911_LDO8;
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default:
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return -EINVAL;
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}
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}
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static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode)
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{
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struct tps65910_reg *pmic = rdev_get_drvdata(dev);
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struct tps65910 *mfd = pmic->mfd;
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int reg, value, id = rdev_get_id(dev);
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reg = pmic->get_ctrl_reg(id);
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if (reg < 0)
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return reg;
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switch (mode) {
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case REGULATOR_MODE_NORMAL:
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return tps65910_reg_update_bits(pmic->mfd, reg,
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LDO_ST_MODE_BIT | LDO_ST_ON_BIT,
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LDO_ST_ON_BIT);
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case REGULATOR_MODE_IDLE:
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value = LDO_ST_ON_BIT | LDO_ST_MODE_BIT;
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return tps65910_reg_set_bits(mfd, reg, value);
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case REGULATOR_MODE_STANDBY:
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return tps65910_reg_clear_bits(mfd, reg, LDO_ST_ON_BIT);
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}
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return -EINVAL;
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}
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static unsigned int tps65910_get_mode(struct regulator_dev *dev)
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{
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struct tps65910_reg *pmic = rdev_get_drvdata(dev);
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int ret, reg, value, id = rdev_get_id(dev);
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reg = pmic->get_ctrl_reg(id);
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if (reg < 0)
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return reg;
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ret = tps65910_reg_read(pmic->mfd, reg, &value);
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if (ret < 0)
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return ret;
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if (!(value & LDO_ST_ON_BIT))
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return REGULATOR_MODE_STANDBY;
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else if (value & LDO_ST_MODE_BIT)
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return REGULATOR_MODE_IDLE;
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else
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return REGULATOR_MODE_NORMAL;
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}
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static int tps65910_get_voltage_dcdc_sel(struct regulator_dev *dev)
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{
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struct tps65910_reg *pmic = rdev_get_drvdata(dev);
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int ret, id = rdev_get_id(dev);
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int opvsel = 0, srvsel = 0, vselmax = 0, mult = 0, sr = 0;
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switch (id) {
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case TPS65910_REG_VDD1:
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ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1_OP, &opvsel);
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if (ret < 0)
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return ret;
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ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1, &mult);
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if (ret < 0)
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return ret;
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mult = (mult & VDD1_VGAIN_SEL_MASK) >> VDD1_VGAIN_SEL_SHIFT;
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ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD1_SR, &srvsel);
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if (ret < 0)
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return ret;
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sr = opvsel & VDD1_OP_CMD_MASK;
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opvsel &= VDD1_OP_SEL_MASK;
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srvsel &= VDD1_SR_SEL_MASK;
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vselmax = 75;
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break;
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case TPS65910_REG_VDD2:
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ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2_OP, &opvsel);
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if (ret < 0)
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return ret;
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ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2, &mult);
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if (ret < 0)
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return ret;
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mult = (mult & VDD2_VGAIN_SEL_MASK) >> VDD2_VGAIN_SEL_SHIFT;
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ret = tps65910_reg_read(pmic->mfd, TPS65910_VDD2_SR, &srvsel);
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if (ret < 0)
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return ret;
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sr = opvsel & VDD2_OP_CMD_MASK;
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opvsel &= VDD2_OP_SEL_MASK;
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srvsel &= VDD2_SR_SEL_MASK;
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vselmax = 75;
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break;
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case TPS65911_REG_VDDCTRL:
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ret = tps65910_reg_read(pmic->mfd, TPS65911_VDDCTRL_OP,
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&opvsel);
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if (ret < 0)
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return ret;
|
|
ret = tps65910_reg_read(pmic->mfd, TPS65911_VDDCTRL_SR,
|
|
&srvsel);
|
|
if (ret < 0)
|
|
return ret;
|
|
sr = opvsel & VDDCTRL_OP_CMD_MASK;
|
|
opvsel &= VDDCTRL_OP_SEL_MASK;
|
|
srvsel &= VDDCTRL_SR_SEL_MASK;
|
|
vselmax = 64;
|
|
break;
|
|
}
|
|
|
|
/* multiplier 0 == 1 but 2,3 normal */
|
|
if (!mult)
|
|
mult = 1;
|
|
|
|
if (sr) {
|
|
/* normalise to valid range */
|
|
if (srvsel < 3)
|
|
srvsel = 3;
|
|
if (srvsel > vselmax)
|
|
srvsel = vselmax;
|
|
return srvsel - 3;
|
|
} else {
|
|
|
|
/* normalise to valid range*/
|
|
if (opvsel < 3)
|
|
opvsel = 3;
|
|
if (opvsel > vselmax)
|
|
opvsel = vselmax;
|
|
return opvsel - 3;
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int tps65910_get_voltage_sel(struct regulator_dev *dev)
|
|
{
|
|
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
|
|
int ret, reg, value, id = rdev_get_id(dev);
|
|
|
|
reg = pmic->get_ctrl_reg(id);
|
|
if (reg < 0)
|
|
return reg;
|
|
|
|
ret = tps65910_reg_read(pmic->mfd, reg, &value);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
switch (id) {
|
|
case TPS65910_REG_VIO:
|
|
case TPS65910_REG_VDIG1:
|
|
case TPS65910_REG_VDIG2:
|
|
case TPS65910_REG_VPLL:
|
|
case TPS65910_REG_VDAC:
|
|
case TPS65910_REG_VAUX1:
|
|
case TPS65910_REG_VAUX2:
|
|
case TPS65910_REG_VAUX33:
|
|
case TPS65910_REG_VMMC:
|
|
value &= LDO_SEL_MASK;
|
|
value >>= LDO_SEL_SHIFT;
|
|
break;
|
|
case TPS65910_REG_VBB:
|
|
value &= BBCH_BBSEL_MASK;
|
|
value >>= BBCH_BBSEL_SHIFT;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
static int tps65910_get_voltage_vdd3(struct regulator_dev *dev)
|
|
{
|
|
return dev->desc->volt_table[0];
|
|
}
|
|
|
|
static int tps65911_get_voltage_sel(struct regulator_dev *dev)
|
|
{
|
|
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
|
|
int ret, id = rdev_get_id(dev);
|
|
unsigned int value, reg;
|
|
|
|
reg = pmic->get_ctrl_reg(id);
|
|
|
|
ret = tps65910_reg_read(pmic->mfd, reg, &value);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
switch (id) {
|
|
case TPS65911_REG_LDO1:
|
|
case TPS65911_REG_LDO2:
|
|
case TPS65911_REG_LDO4:
|
|
value &= LDO1_SEL_MASK;
|
|
value >>= LDO_SEL_SHIFT;
|
|
break;
|
|
case TPS65911_REG_LDO3:
|
|
case TPS65911_REG_LDO5:
|
|
case TPS65911_REG_LDO6:
|
|
case TPS65911_REG_LDO7:
|
|
case TPS65911_REG_LDO8:
|
|
value &= LDO3_SEL_MASK;
|
|
value >>= LDO_SEL_SHIFT;
|
|
break;
|
|
case TPS65910_REG_VIO:
|
|
value &= LDO_SEL_MASK;
|
|
value >>= LDO_SEL_SHIFT;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
static int tps65910_set_voltage_dcdc_sel(struct regulator_dev *dev,
|
|
unsigned selector)
|
|
{
|
|
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
|
|
int id = rdev_get_id(dev), vsel;
|
|
int dcdc_mult = 0;
|
|
|
|
switch (id) {
|
|
case TPS65910_REG_VDD1:
|
|
dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
|
|
if (dcdc_mult == 1)
|
|
dcdc_mult--;
|
|
vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
|
|
|
|
tps65910_reg_update_bits(pmic->mfd, TPS65910_VDD1,
|
|
VDD1_VGAIN_SEL_MASK,
|
|
dcdc_mult << VDD1_VGAIN_SEL_SHIFT);
|
|
tps65910_reg_write(pmic->mfd, TPS65910_VDD1_OP, vsel);
|
|
break;
|
|
case TPS65910_REG_VDD2:
|
|
dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
|
|
if (dcdc_mult == 1)
|
|
dcdc_mult--;
|
|
vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
|
|
|
|
tps65910_reg_update_bits(pmic->mfd, TPS65910_VDD2,
|
|
VDD1_VGAIN_SEL_MASK,
|
|
dcdc_mult << VDD2_VGAIN_SEL_SHIFT);
|
|
tps65910_reg_write(pmic->mfd, TPS65910_VDD2_OP, vsel);
|
|
break;
|
|
case TPS65911_REG_VDDCTRL:
|
|
vsel = selector + 3;
|
|
tps65910_reg_write(pmic->mfd, TPS65911_VDDCTRL_OP, vsel);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tps65910_set_voltage_sel(struct regulator_dev *dev,
|
|
unsigned selector)
|
|
{
|
|
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
|
|
int reg, id = rdev_get_id(dev);
|
|
|
|
reg = pmic->get_ctrl_reg(id);
|
|
if (reg < 0)
|
|
return reg;
|
|
|
|
switch (id) {
|
|
case TPS65910_REG_VIO:
|
|
case TPS65910_REG_VDIG1:
|
|
case TPS65910_REG_VDIG2:
|
|
case TPS65910_REG_VPLL:
|
|
case TPS65910_REG_VDAC:
|
|
case TPS65910_REG_VAUX1:
|
|
case TPS65910_REG_VAUX2:
|
|
case TPS65910_REG_VAUX33:
|
|
case TPS65910_REG_VMMC:
|
|
return tps65910_reg_update_bits(pmic->mfd, reg, LDO_SEL_MASK,
|
|
selector << LDO_SEL_SHIFT);
|
|
case TPS65910_REG_VBB:
|
|
return tps65910_reg_update_bits(pmic->mfd, reg, BBCH_BBSEL_MASK,
|
|
selector << BBCH_BBSEL_SHIFT);
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int tps65911_set_voltage_sel(struct regulator_dev *dev,
|
|
unsigned selector)
|
|
{
|
|
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
|
|
int reg, id = rdev_get_id(dev);
|
|
|
|
reg = pmic->get_ctrl_reg(id);
|
|
if (reg < 0)
|
|
return reg;
|
|
|
|
switch (id) {
|
|
case TPS65911_REG_LDO1:
|
|
case TPS65911_REG_LDO2:
|
|
case TPS65911_REG_LDO4:
|
|
return tps65910_reg_update_bits(pmic->mfd, reg, LDO1_SEL_MASK,
|
|
selector << LDO_SEL_SHIFT);
|
|
case TPS65911_REG_LDO3:
|
|
case TPS65911_REG_LDO5:
|
|
case TPS65911_REG_LDO6:
|
|
case TPS65911_REG_LDO7:
|
|
case TPS65911_REG_LDO8:
|
|
return tps65910_reg_update_bits(pmic->mfd, reg, LDO3_SEL_MASK,
|
|
selector << LDO_SEL_SHIFT);
|
|
case TPS65910_REG_VIO:
|
|
return tps65910_reg_update_bits(pmic->mfd, reg, LDO_SEL_MASK,
|
|
selector << LDO_SEL_SHIFT);
|
|
case TPS65910_REG_VBB:
|
|
return tps65910_reg_update_bits(pmic->mfd, reg, BBCH_BBSEL_MASK,
|
|
selector << BBCH_BBSEL_SHIFT);
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
|
|
static int tps65910_list_voltage_dcdc(struct regulator_dev *dev,
|
|
unsigned selector)
|
|
{
|
|
int volt, mult = 1, id = rdev_get_id(dev);
|
|
|
|
switch (id) {
|
|
case TPS65910_REG_VDD1:
|
|
case TPS65910_REG_VDD2:
|
|
mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
|
|
volt = VDD1_2_MIN_VOLT +
|
|
(selector % VDD1_2_NUM_VOLT_FINE) * VDD1_2_OFFSET;
|
|
break;
|
|
case TPS65911_REG_VDDCTRL:
|
|
volt = VDDCTRL_MIN_VOLT + (selector * VDDCTRL_OFFSET);
|
|
break;
|
|
default:
|
|
BUG();
|
|
return -EINVAL;
|
|
}
|
|
|
|
return volt * 100 * mult;
|
|
}
|
|
|
|
static int tps65911_list_voltage(struct regulator_dev *dev, unsigned selector)
|
|
{
|
|
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
|
|
int step_mv = 0, id = rdev_get_id(dev);
|
|
|
|
switch (id) {
|
|
case TPS65911_REG_LDO1:
|
|
case TPS65911_REG_LDO2:
|
|
case TPS65911_REG_LDO4:
|
|
/* The first 5 values of the selector correspond to 1V */
|
|
if (selector < 5)
|
|
selector = 0;
|
|
else
|
|
selector -= 4;
|
|
|
|
step_mv = 50;
|
|
break;
|
|
case TPS65911_REG_LDO3:
|
|
case TPS65911_REG_LDO5:
|
|
case TPS65911_REG_LDO6:
|
|
case TPS65911_REG_LDO7:
|
|
case TPS65911_REG_LDO8:
|
|
/* The first 3 values of the selector correspond to 1V */
|
|
if (selector < 3)
|
|
selector = 0;
|
|
else
|
|
selector -= 2;
|
|
|
|
step_mv = 100;
|
|
break;
|
|
case TPS65910_REG_VIO:
|
|
return pmic->info[id]->voltage_table[selector];
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return (LDO_MIN_VOLT + selector * step_mv) * 1000;
|
|
}
|
|
|
|
/* Regulator ops (except VRTC) */
|
|
static struct regulator_ops tps65910_ops_dcdc = {
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.set_mode = tps65910_set_mode,
|
|
.get_mode = tps65910_get_mode,
|
|
.get_voltage_sel = tps65910_get_voltage_dcdc_sel,
|
|
.set_voltage_sel = tps65910_set_voltage_dcdc_sel,
|
|
.set_voltage_time_sel = regulator_set_voltage_time_sel,
|
|
.list_voltage = tps65910_list_voltage_dcdc,
|
|
.map_voltage = regulator_map_voltage_ascend,
|
|
};
|
|
|
|
static struct regulator_ops tps65910_ops_vdd3 = {
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.set_mode = tps65910_set_mode,
|
|
.get_mode = tps65910_get_mode,
|
|
.get_voltage = tps65910_get_voltage_vdd3,
|
|
.list_voltage = regulator_list_voltage_table,
|
|
.map_voltage = regulator_map_voltage_ascend,
|
|
};
|
|
|
|
static struct regulator_ops tps65910_ops_vbb = {
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.set_mode = tps65910_set_mode,
|
|
.get_mode = tps65910_get_mode,
|
|
.get_voltage_sel = tps65910_get_voltage_sel,
|
|
.set_voltage_sel = tps65910_set_voltage_sel,
|
|
.list_voltage = regulator_list_voltage_table,
|
|
.map_voltage = regulator_map_voltage_iterate,
|
|
};
|
|
|
|
static struct regulator_ops tps65910_ops = {
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.set_mode = tps65910_set_mode,
|
|
.get_mode = tps65910_get_mode,
|
|
.get_voltage_sel = tps65910_get_voltage_sel,
|
|
.set_voltage_sel = tps65910_set_voltage_sel,
|
|
.list_voltage = regulator_list_voltage_table,
|
|
.map_voltage = regulator_map_voltage_ascend,
|
|
};
|
|
|
|
static struct regulator_ops tps65911_ops = {
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.set_mode = tps65910_set_mode,
|
|
.get_mode = tps65910_get_mode,
|
|
.get_voltage_sel = tps65911_get_voltage_sel,
|
|
.set_voltage_sel = tps65911_set_voltage_sel,
|
|
.list_voltage = tps65911_list_voltage,
|
|
.map_voltage = regulator_map_voltage_ascend,
|
|
};
|
|
|
|
static int tps65910_set_ext_sleep_config(struct tps65910_reg *pmic,
|
|
int id, int ext_sleep_config)
|
|
{
|
|
struct tps65910 *mfd = pmic->mfd;
|
|
u8 regoffs = (pmic->ext_sleep_control[id] >> 8) & 0xFF;
|
|
u8 bit_pos = (1 << pmic->ext_sleep_control[id] & 0xFF);
|
|
int ret;
|
|
|
|
/*
|
|
* Regulator can not be control from multiple external input EN1, EN2
|
|
* and EN3 together.
|
|
*/
|
|
if (ext_sleep_config & EXT_SLEEP_CONTROL) {
|
|
int en_count;
|
|
en_count = ((ext_sleep_config &
|
|
TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) != 0);
|
|
en_count += ((ext_sleep_config &
|
|
TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) != 0);
|
|
en_count += ((ext_sleep_config &
|
|
TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) != 0);
|
|
en_count += ((ext_sleep_config &
|
|
TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) != 0);
|
|
if (en_count > 1) {
|
|
dev_err(mfd->dev,
|
|
"External sleep control flag is not proper\n");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
pmic->board_ext_control[id] = ext_sleep_config;
|
|
|
|
/* External EN1 control */
|
|
if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1)
|
|
ret = tps65910_reg_set_bits(mfd,
|
|
TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
|
|
else
|
|
ret = tps65910_reg_clear_bits(mfd,
|
|
TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
|
|
if (ret < 0) {
|
|
dev_err(mfd->dev,
|
|
"Error in configuring external control EN1\n");
|
|
return ret;
|
|
}
|
|
|
|
/* External EN2 control */
|
|
if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2)
|
|
ret = tps65910_reg_set_bits(mfd,
|
|
TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
|
|
else
|
|
ret = tps65910_reg_clear_bits(mfd,
|
|
TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
|
|
if (ret < 0) {
|
|
dev_err(mfd->dev,
|
|
"Error in configuring external control EN2\n");
|
|
return ret;
|
|
}
|
|
|
|
/* External EN3 control for TPS65910 LDO only */
|
|
if ((tps65910_chip_id(mfd) == TPS65910) &&
|
|
(id >= TPS65910_REG_VDIG1)) {
|
|
if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3)
|
|
ret = tps65910_reg_set_bits(mfd,
|
|
TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
|
|
else
|
|
ret = tps65910_reg_clear_bits(mfd,
|
|
TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
|
|
if (ret < 0) {
|
|
dev_err(mfd->dev,
|
|
"Error in configuring external control EN3\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* Return if no external control is selected */
|
|
if (!(ext_sleep_config & EXT_SLEEP_CONTROL)) {
|
|
/* Clear all sleep controls */
|
|
ret = tps65910_reg_clear_bits(mfd,
|
|
TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
|
|
if (!ret)
|
|
ret = tps65910_reg_clear_bits(mfd,
|
|
TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
|
|
if (ret < 0)
|
|
dev_err(mfd->dev,
|
|
"Error in configuring SLEEP register\n");
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* For regulator that has separate operational and sleep register make
|
|
* sure that operational is used and clear sleep register to turn
|
|
* regulator off when external control is inactive
|
|
*/
|
|
if ((id == TPS65910_REG_VDD1) ||
|
|
(id == TPS65910_REG_VDD2) ||
|
|
((id == TPS65911_REG_VDDCTRL) &&
|
|
(tps65910_chip_id(mfd) == TPS65911))) {
|
|
int op_reg_add = pmic->get_ctrl_reg(id) + 1;
|
|
int sr_reg_add = pmic->get_ctrl_reg(id) + 2;
|
|
int opvsel, srvsel;
|
|
|
|
ret = tps65910_reg_read(pmic->mfd, op_reg_add, &opvsel);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = tps65910_reg_read(pmic->mfd, sr_reg_add, &srvsel);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (opvsel & VDD1_OP_CMD_MASK) {
|
|
u8 reg_val = srvsel & VDD1_OP_SEL_MASK;
|
|
|
|
ret = tps65910_reg_write(pmic->mfd, op_reg_add,
|
|
reg_val);
|
|
if (ret < 0) {
|
|
dev_err(mfd->dev,
|
|
"Error in configuring op register\n");
|
|
return ret;
|
|
}
|
|
}
|
|
ret = tps65910_reg_write(pmic->mfd, sr_reg_add, 0);
|
|
if (ret < 0) {
|
|
dev_err(mfd->dev, "Error in setting sr register\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
ret = tps65910_reg_clear_bits(mfd,
|
|
TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
|
|
if (!ret) {
|
|
if (ext_sleep_config & TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP)
|
|
ret = tps65910_reg_set_bits(mfd,
|
|
TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
|
|
else
|
|
ret = tps65910_reg_clear_bits(mfd,
|
|
TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
|
|
}
|
|
if (ret < 0)
|
|
dev_err(mfd->dev,
|
|
"Error in configuring SLEEP register\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
#ifdef CONFIG_OF
|
|
|
|
static struct of_regulator_match tps65910_matches[] = {
|
|
{ .name = "vrtc", .driver_data = (void *) &tps65910_regs[0] },
|
|
{ .name = "vio", .driver_data = (void *) &tps65910_regs[1] },
|
|
{ .name = "vdd1", .driver_data = (void *) &tps65910_regs[2] },
|
|
{ .name = "vdd2", .driver_data = (void *) &tps65910_regs[3] },
|
|
{ .name = "vdd3", .driver_data = (void *) &tps65910_regs[4] },
|
|
{ .name = "vdig1", .driver_data = (void *) &tps65910_regs[5] },
|
|
{ .name = "vdig2", .driver_data = (void *) &tps65910_regs[6] },
|
|
{ .name = "vpll", .driver_data = (void *) &tps65910_regs[7] },
|
|
{ .name = "vdac", .driver_data = (void *) &tps65910_regs[8] },
|
|
{ .name = "vaux1", .driver_data = (void *) &tps65910_regs[9] },
|
|
{ .name = "vaux2", .driver_data = (void *) &tps65910_regs[10] },
|
|
{ .name = "vaux33", .driver_data = (void *) &tps65910_regs[11] },
|
|
{ .name = "vmmc", .driver_data = (void *) &tps65910_regs[12] },
|
|
{ .name = "vbb", .driver_data = (void *) &tps65910_regs[13] },
|
|
};
|
|
|
|
static struct of_regulator_match tps65911_matches[] = {
|
|
{ .name = "vrtc", .driver_data = (void *) &tps65911_regs[0] },
|
|
{ .name = "vio", .driver_data = (void *) &tps65911_regs[1] },
|
|
{ .name = "vdd1", .driver_data = (void *) &tps65911_regs[2] },
|
|
{ .name = "vdd2", .driver_data = (void *) &tps65911_regs[3] },
|
|
{ .name = "vddctrl", .driver_data = (void *) &tps65911_regs[4] },
|
|
{ .name = "ldo1", .driver_data = (void *) &tps65911_regs[5] },
|
|
{ .name = "ldo2", .driver_data = (void *) &tps65911_regs[6] },
|
|
{ .name = "ldo3", .driver_data = (void *) &tps65911_regs[7] },
|
|
{ .name = "ldo4", .driver_data = (void *) &tps65911_regs[8] },
|
|
{ .name = "ldo5", .driver_data = (void *) &tps65911_regs[9] },
|
|
{ .name = "ldo6", .driver_data = (void *) &tps65911_regs[10] },
|
|
{ .name = "ldo7", .driver_data = (void *) &tps65911_regs[11] },
|
|
{ .name = "ldo8", .driver_data = (void *) &tps65911_regs[12] },
|
|
};
|
|
|
|
static struct tps65910_board *tps65910_parse_dt_reg_data(
|
|
struct platform_device *pdev,
|
|
struct of_regulator_match **tps65910_reg_matches)
|
|
{
|
|
struct tps65910_board *pmic_plat_data;
|
|
struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
|
|
struct device_node *np, *regulators;
|
|
struct of_regulator_match *matches;
|
|
unsigned int prop;
|
|
int idx = 0, ret, count;
|
|
|
|
pmic_plat_data = devm_kzalloc(&pdev->dev, sizeof(*pmic_plat_data),
|
|
GFP_KERNEL);
|
|
if (!pmic_plat_data)
|
|
return NULL;
|
|
|
|
np = pdev->dev.parent->of_node;
|
|
regulators = of_get_child_by_name(np, "regulators");
|
|
if (!regulators) {
|
|
dev_err(&pdev->dev, "regulator node not found\n");
|
|
return NULL;
|
|
}
|
|
|
|
switch (tps65910_chip_id(tps65910)) {
|
|
case TPS65910:
|
|
count = ARRAY_SIZE(tps65910_matches);
|
|
matches = tps65910_matches;
|
|
break;
|
|
case TPS65911:
|
|
count = ARRAY_SIZE(tps65911_matches);
|
|
matches = tps65911_matches;
|
|
break;
|
|
default:
|
|
of_node_put(regulators);
|
|
dev_err(&pdev->dev, "Invalid tps chip version\n");
|
|
return NULL;
|
|
}
|
|
|
|
ret = of_regulator_match(&pdev->dev, regulators, matches, count);
|
|
of_node_put(regulators);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
|
|
ret);
|
|
return NULL;
|
|
}
|
|
|
|
*tps65910_reg_matches = matches;
|
|
|
|
for (idx = 0; idx < count; idx++) {
|
|
if (!matches[idx].of_node)
|
|
continue;
|
|
|
|
pmic_plat_data->tps65910_pmic_init_data[idx] =
|
|
matches[idx].init_data;
|
|
|
|
ret = of_property_read_u32(matches[idx].of_node,
|
|
"ti,regulator-ext-sleep-control", &prop);
|
|
if (!ret)
|
|
pmic_plat_data->regulator_ext_sleep_control[idx] = prop;
|
|
|
|
}
|
|
|
|
return pmic_plat_data;
|
|
}
|
|
#else
|
|
static inline struct tps65910_board *tps65910_parse_dt_reg_data(
|
|
struct platform_device *pdev,
|
|
struct of_regulator_match **tps65910_reg_matches)
|
|
{
|
|
*tps65910_reg_matches = NULL;
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
static int tps65910_probe(struct platform_device *pdev)
|
|
{
|
|
struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
|
|
struct regulator_config config = { };
|
|
struct tps_info *info;
|
|
struct regulator_dev *rdev;
|
|
struct tps65910_reg *pmic;
|
|
struct tps65910_board *pmic_plat_data;
|
|
struct of_regulator_match *tps65910_reg_matches = NULL;
|
|
int i, err;
|
|
|
|
pmic_plat_data = dev_get_platdata(tps65910->dev);
|
|
if (!pmic_plat_data && tps65910->dev->of_node)
|
|
pmic_plat_data = tps65910_parse_dt_reg_data(pdev,
|
|
&tps65910_reg_matches);
|
|
|
|
if (!pmic_plat_data) {
|
|
dev_err(&pdev->dev, "Platform data not found\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
|
|
if (!pmic)
|
|
return -ENOMEM;
|
|
|
|
pmic->mfd = tps65910;
|
|
platform_set_drvdata(pdev, pmic);
|
|
|
|
/* Give control of all register to control port */
|
|
tps65910_reg_set_bits(pmic->mfd, TPS65910_DEVCTRL,
|
|
DEVCTRL_SR_CTL_I2C_SEL_MASK);
|
|
|
|
switch (tps65910_chip_id(tps65910)) {
|
|
case TPS65910:
|
|
BUILD_BUG_ON(TPS65910_NUM_REGS < ARRAY_SIZE(tps65910_regs));
|
|
pmic->get_ctrl_reg = &tps65910_get_ctrl_register;
|
|
pmic->num_regulators = ARRAY_SIZE(tps65910_regs);
|
|
pmic->ext_sleep_control = tps65910_ext_sleep_control;
|
|
info = tps65910_regs;
|
|
/* Work around silicon erratum SWCZ010: output programmed
|
|
* voltage level can go higher than expected or crash
|
|
* Workaround: use no synchronization of DCDC clocks
|
|
*/
|
|
tps65910_reg_clear_bits(pmic->mfd, TPS65910_DCDCCTRL,
|
|
DCDCCTRL_DCDCCKSYNC_MASK);
|
|
break;
|
|
case TPS65911:
|
|
BUILD_BUG_ON(TPS65910_NUM_REGS < ARRAY_SIZE(tps65911_regs));
|
|
pmic->get_ctrl_reg = &tps65911_get_ctrl_register;
|
|
pmic->num_regulators = ARRAY_SIZE(tps65911_regs);
|
|
pmic->ext_sleep_control = tps65911_ext_sleep_control;
|
|
info = tps65911_regs;
|
|
break;
|
|
default:
|
|
dev_err(&pdev->dev, "Invalid tps chip version\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
pmic->desc = devm_kzalloc(&pdev->dev, pmic->num_regulators *
|
|
sizeof(struct regulator_desc), GFP_KERNEL);
|
|
if (!pmic->desc)
|
|
return -ENOMEM;
|
|
|
|
pmic->info = devm_kzalloc(&pdev->dev, pmic->num_regulators *
|
|
sizeof(struct tps_info *), GFP_KERNEL);
|
|
if (!pmic->info)
|
|
return -ENOMEM;
|
|
|
|
pmic->rdev = devm_kzalloc(&pdev->dev, pmic->num_regulators *
|
|
sizeof(struct regulator_dev *), GFP_KERNEL);
|
|
if (!pmic->rdev)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < pmic->num_regulators; i++, info++) {
|
|
/* Register the regulators */
|
|
pmic->info[i] = info;
|
|
|
|
pmic->desc[i].name = info->name;
|
|
pmic->desc[i].supply_name = info->vin_name;
|
|
pmic->desc[i].id = i;
|
|
pmic->desc[i].n_voltages = info->n_voltages;
|
|
pmic->desc[i].enable_time = info->enable_time_us;
|
|
|
|
if (i == TPS65910_REG_VDD1 || i == TPS65910_REG_VDD2) {
|
|
pmic->desc[i].ops = &tps65910_ops_dcdc;
|
|
pmic->desc[i].n_voltages = VDD1_2_NUM_VOLT_FINE *
|
|
VDD1_2_NUM_VOLT_COARSE;
|
|
pmic->desc[i].ramp_delay = 12500;
|
|
} else if (i == TPS65910_REG_VDD3) {
|
|
if (tps65910_chip_id(tps65910) == TPS65910) {
|
|
pmic->desc[i].ops = &tps65910_ops_vdd3;
|
|
pmic->desc[i].volt_table = info->voltage_table;
|
|
} else {
|
|
pmic->desc[i].ops = &tps65910_ops_dcdc;
|
|
pmic->desc[i].ramp_delay = 5000;
|
|
}
|
|
} else if (i == TPS65910_REG_VBB &&
|
|
tps65910_chip_id(tps65910) == TPS65910) {
|
|
pmic->desc[i].ops = &tps65910_ops_vbb;
|
|
pmic->desc[i].volt_table = info->voltage_table;
|
|
} else {
|
|
if (tps65910_chip_id(tps65910) == TPS65910) {
|
|
pmic->desc[i].ops = &tps65910_ops;
|
|
pmic->desc[i].volt_table = info->voltage_table;
|
|
} else {
|
|
pmic->desc[i].ops = &tps65911_ops;
|
|
}
|
|
}
|
|
|
|
err = tps65910_set_ext_sleep_config(pmic, i,
|
|
pmic_plat_data->regulator_ext_sleep_control[i]);
|
|
/*
|
|
* Failing on regulator for configuring externally control
|
|
* is not a serious issue, just throw warning.
|
|
*/
|
|
if (err < 0)
|
|
dev_warn(tps65910->dev,
|
|
"Failed to initialise ext control config\n");
|
|
|
|
pmic->desc[i].type = REGULATOR_VOLTAGE;
|
|
pmic->desc[i].owner = THIS_MODULE;
|
|
pmic->desc[i].enable_reg = pmic->get_ctrl_reg(i);
|
|
pmic->desc[i].enable_mask = TPS65910_SUPPLY_STATE_ENABLED;
|
|
|
|
config.dev = tps65910->dev;
|
|
config.init_data = pmic_plat_data->tps65910_pmic_init_data[i];
|
|
config.driver_data = pmic;
|
|
config.regmap = tps65910->regmap;
|
|
|
|
if (tps65910_reg_matches)
|
|
config.of_node = tps65910_reg_matches[i].of_node;
|
|
|
|
rdev = devm_regulator_register(&pdev->dev, &pmic->desc[i],
|
|
&config);
|
|
if (IS_ERR(rdev)) {
|
|
dev_err(tps65910->dev,
|
|
"failed to register %s regulator\n",
|
|
pdev->name);
|
|
return PTR_ERR(rdev);
|
|
}
|
|
|
|
/* Save regulator for cleanup */
|
|
pmic->rdev[i] = rdev;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void tps65910_shutdown(struct platform_device *pdev)
|
|
{
|
|
struct tps65910_reg *pmic = platform_get_drvdata(pdev);
|
|
int i;
|
|
|
|
/*
|
|
* Before bootloader jumps to kernel, it makes sure that required
|
|
* external control signals are in desired state so that given rails
|
|
* can be configure accordingly.
|
|
* If rails are configured to be controlled from external control
|
|
* then before shutting down/rebooting the system, the external
|
|
* control configuration need to be remove from the rails so that
|
|
* its output will be available as per register programming even
|
|
* if external controls are removed. This is require when the POR
|
|
* value of the control signals are not in active state and before
|
|
* bootloader initializes it, the system requires the rail output
|
|
* to be active for booting.
|
|
*/
|
|
for (i = 0; i < pmic->num_regulators; i++) {
|
|
int err;
|
|
if (!pmic->rdev[i])
|
|
continue;
|
|
|
|
err = tps65910_set_ext_sleep_config(pmic, i, 0);
|
|
if (err < 0)
|
|
dev_err(&pdev->dev,
|
|
"Error in clearing external control\n");
|
|
}
|
|
}
|
|
|
|
static struct platform_driver tps65910_driver = {
|
|
.driver = {
|
|
.name = "tps65910-pmic",
|
|
},
|
|
.probe = tps65910_probe,
|
|
.shutdown = tps65910_shutdown,
|
|
};
|
|
|
|
static int __init tps65910_init(void)
|
|
{
|
|
return platform_driver_register(&tps65910_driver);
|
|
}
|
|
subsys_initcall(tps65910_init);
|
|
|
|
static void __exit tps65910_cleanup(void)
|
|
{
|
|
platform_driver_unregister(&tps65910_driver);
|
|
}
|
|
module_exit(tps65910_cleanup);
|
|
|
|
MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
|
|
MODULE_DESCRIPTION("TPS65910/TPS65911 voltage regulator driver");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_ALIAS("platform:tps65910-pmic");
|