From 66cb88e3bf023b7a67b910ab824f2d2ba7e47358 Mon Sep 17 00:00:00 2001 From: Marcus Folkesson Date: Mon, 25 Jul 2011 23:11:30 +0200 Subject: [PATCH] regulator: TPS65020 support Tested with a PXA270-based custom board. The driver is based on tps65023-regulator.c. Also, two bugs is fixed that were in the original driver: * Setting the CORE ADJ allowed bit in CTRL2 * Setting the GO bit in CTRL2 for updating the core voltage Signed-off-by: Marcus Folkesson --- drivers/regulator/Kconfig | 6 +- drivers/regulator/Makefile | 2 +- drivers/regulator/tps65023-regulator.c | 633 --------------------------- drivers/regulator/tps6502x-regulator.c | 751 ++++++++++++++++++++++++++++++++ 4 files changed, 755 insertions(+), 637 deletions(-) delete mode 100644 drivers/regulator/tps65023-regulator.c create mode 100644 drivers/regulator/tps6502x-regulator.c diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index d7ed20f..b25f5c7 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -232,11 +232,11 @@ config REGULATOR_TPS6105X It is a single boost converter primarily for white LEDs and audio amplifiers. -config REGULATOR_TPS65023 - tristate "TI TPS65023 Power regulators" +config REGULATOR_TPS6502X + tristate "TI TPS6502X Power regulators" depends on I2C help - This driver supports TPS65023 voltage regulator chips. TPS65023 provides + This driver supports TPS65020 and TPS65023 voltage regulator chips. TPS6502X provides three step-down converters and two general-purpose LDO voltage regulators. It supports TI's software based Class-2 SmartReflex implementation. diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 3932d2e..1af7363 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -35,7 +35,7 @@ obj-$(CONFIG_REGULATOR_MC13892) += mc13892-regulator.o obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o obj-$(CONFIG_REGULATOR_TPS6105X) += tps6105x-regulator.o -obj-$(CONFIG_REGULATOR_TPS65023) += tps65023-regulator.o +obj-$(CONFIG_REGULATOR_TPS6502X) += tps6502x-regulator.o obj-$(CONFIG_REGULATOR_TPS6507X) += tps6507x-regulator.o obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o obj-$(CONFIG_REGULATOR_88PM8607) += 88pm8607.o diff --git a/drivers/regulator/tps65023-regulator.c b/drivers/regulator/tps65023-regulator.c deleted file mode 100644 index fbddc15..0000000 --- a/drivers/regulator/tps65023-regulator.c +++ /dev/null @@ -1,633 +0,0 @@ -/* - * tps65023-regulator.c - * - * Supports TPS65023 Regulator - * - * Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/ - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation version 2. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind, - * whether express or implied; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -/* Register definitions */ -#define TPS65023_REG_VERSION 0 -#define TPS65023_REG_PGOODZ 1 -#define TPS65023_REG_MASK 2 -#define TPS65023_REG_REG_CTRL 3 -#define TPS65023_REG_CON_CTRL 4 -#define TPS65023_REG_CON_CTRL2 5 -#define TPS65023_REG_DEF_CORE 6 -#define TPS65023_REG_DEFSLEW 7 -#define TPS65023_REG_LDO_CTRL 8 - -/* PGOODZ bitfields */ -#define TPS65023_PGOODZ_PWRFAILZ BIT(7) -#define TPS65023_PGOODZ_LOWBATTZ BIT(6) -#define TPS65023_PGOODZ_VDCDC1 BIT(5) -#define TPS65023_PGOODZ_VDCDC2 BIT(4) -#define TPS65023_PGOODZ_VDCDC3 BIT(3) -#define TPS65023_PGOODZ_LDO2 BIT(2) -#define TPS65023_PGOODZ_LDO1 BIT(1) - -/* MASK bitfields */ -#define TPS65023_MASK_PWRFAILZ BIT(7) -#define TPS65023_MASK_LOWBATTZ BIT(6) -#define TPS65023_MASK_VDCDC1 BIT(5) -#define TPS65023_MASK_VDCDC2 BIT(4) -#define TPS65023_MASK_VDCDC3 BIT(3) -#define TPS65023_MASK_LDO2 BIT(2) -#define TPS65023_MASK_LDO1 BIT(1) - -/* REG_CTRL bitfields */ -#define TPS65023_REG_CTRL_VDCDC1_EN BIT(5) -#define TPS65023_REG_CTRL_VDCDC2_EN BIT(4) -#define TPS65023_REG_CTRL_VDCDC3_EN BIT(3) -#define TPS65023_REG_CTRL_LDO2_EN BIT(2) -#define TPS65023_REG_CTRL_LDO1_EN BIT(1) - -/* LDO_CTRL bitfields */ -#define TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_id) ((ldo_id)*4) -#define TPS65023_LDO_CTRL_LDOx_MASK(ldo_id) (0xF0 >> ((ldo_id)*4)) - -/* Number of step-down converters available */ -#define TPS65023_NUM_DCDC 3 -/* Number of LDO voltage regulators available */ -#define TPS65023_NUM_LDO 2 -/* Number of total regulators available */ -#define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO) - -/* DCDCs */ -#define TPS65023_DCDC_1 0 -#define TPS65023_DCDC_2 1 -#define TPS65023_DCDC_3 2 -/* LDOs */ -#define TPS65023_LDO_1 3 -#define TPS65023_LDO_2 4 - -#define TPS65023_MAX_REG_ID TPS65023_LDO_2 - -/* Supported voltage values for regulators */ -static const u16 VDCDC1_VSEL_table[] = { - 800, 825, 850, 875, - 900, 925, 950, 975, - 1000, 1025, 1050, 1075, - 1100, 1125, 1150, 1175, - 1200, 1225, 1250, 1275, - 1300, 1325, 1350, 1375, - 1400, 1425, 1450, 1475, - 1500, 1525, 1550, 1600, -}; - -static const u16 LDO1_VSEL_table[] = { - 1000, 1100, 1300, 1800, - 2200, 2600, 2800, 3150, -}; - -static const u16 LDO2_VSEL_table[] = { - 1050, 1200, 1300, 1800, - 2500, 2800, 3000, 3300, -}; - -static unsigned int num_voltages[] = {ARRAY_SIZE(VDCDC1_VSEL_table), - 0, 0, ARRAY_SIZE(LDO1_VSEL_table), - ARRAY_SIZE(LDO2_VSEL_table)}; - -/* Regulator specific details */ -struct tps_info { - const char *name; - unsigned min_uV; - unsigned max_uV; - bool fixed; - u8 table_len; - const u16 *table; -}; - -/* PMIC details */ -struct tps_pmic { - struct regulator_desc desc[TPS65023_NUM_REGULATOR]; - struct i2c_client *client; - struct regulator_dev *rdev[TPS65023_NUM_REGULATOR]; - const struct tps_info *info[TPS65023_NUM_REGULATOR]; - struct mutex io_lock; -}; - -static inline int tps_65023_read(struct tps_pmic *tps, u8 reg) -{ - return i2c_smbus_read_byte_data(tps->client, reg); -} - -static inline int tps_65023_write(struct tps_pmic *tps, u8 reg, u8 val) -{ - return i2c_smbus_write_byte_data(tps->client, reg, val); -} - -static int tps_65023_set_bits(struct tps_pmic *tps, u8 reg, u8 mask) -{ - int err, data; - - mutex_lock(&tps->io_lock); - - data = tps_65023_read(tps, reg); - if (data < 0) { - dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); - err = data; - goto out; - } - - data |= mask; - err = tps_65023_write(tps, reg, data); - if (err) - dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); - -out: - mutex_unlock(&tps->io_lock); - return err; -} - -static int tps_65023_clear_bits(struct tps_pmic *tps, u8 reg, u8 mask) -{ - int err, data; - - mutex_lock(&tps->io_lock); - - data = tps_65023_read(tps, reg); - if (data < 0) { - dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); - err = data; - goto out; - } - - data &= ~mask; - - err = tps_65023_write(tps, reg, data); - if (err) - dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); - -out: - mutex_unlock(&tps->io_lock); - return err; - -} - -static int tps_65023_reg_read(struct tps_pmic *tps, u8 reg) -{ - int data; - - mutex_lock(&tps->io_lock); - - data = tps_65023_read(tps, reg); - if (data < 0) - dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); - - mutex_unlock(&tps->io_lock); - return data; -} - -static int tps_65023_reg_write(struct tps_pmic *tps, u8 reg, u8 val) -{ - int err; - - mutex_lock(&tps->io_lock); - - err = tps_65023_write(tps, reg, val); - if (err < 0) - dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); - - mutex_unlock(&tps->io_lock); - return err; -} - -static int tps65023_dcdc_is_enabled(struct regulator_dev *dev) -{ - struct tps_pmic *tps = rdev_get_drvdata(dev); - int data, dcdc = rdev_get_id(dev); - u8 shift; - - if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) - return -EINVAL; - - shift = TPS65023_NUM_REGULATOR - dcdc; - data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL); - - if (data < 0) - return data; - else - return (data & 1< TPS65023_LDO_2) - return -EINVAL; - - shift = (ldo == TPS65023_LDO_1 ? 1 : 2); - data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL); - - if (data < 0) - return data; - else - return (data & 1< TPS65023_DCDC_3) - return -EINVAL; - - shift = TPS65023_NUM_REGULATOR - dcdc; - return tps_65023_set_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); -} - -static int tps65023_dcdc_disable(struct regulator_dev *dev) -{ - struct tps_pmic *tps = rdev_get_drvdata(dev); - int dcdc = rdev_get_id(dev); - u8 shift; - - if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) - return -EINVAL; - - shift = TPS65023_NUM_REGULATOR - dcdc; - return tps_65023_clear_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); -} - -static int tps65023_ldo_enable(struct regulator_dev *dev) -{ - struct tps_pmic *tps = rdev_get_drvdata(dev); - int ldo = rdev_get_id(dev); - u8 shift; - - if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) - return -EINVAL; - - shift = (ldo == TPS65023_LDO_1 ? 1 : 2); - return tps_65023_set_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); -} - -static int tps65023_ldo_disable(struct regulator_dev *dev) -{ - struct tps_pmic *tps = rdev_get_drvdata(dev); - int ldo = rdev_get_id(dev); - u8 shift; - - if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) - return -EINVAL; - - shift = (ldo == TPS65023_LDO_1 ? 1 : 2); - return tps_65023_clear_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift); -} - -static int tps65023_dcdc_get_voltage(struct regulator_dev *dev) -{ - struct tps_pmic *tps = rdev_get_drvdata(dev); - int data, dcdc = rdev_get_id(dev); - - if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) - return -EINVAL; - - if (dcdc == TPS65023_DCDC_1) { - data = tps_65023_reg_read(tps, TPS65023_REG_DEF_CORE); - if (data < 0) - return data; - data &= (tps->info[dcdc]->table_len - 1); - return tps->info[dcdc]->table[data] * 1000; - } else - return tps->info[dcdc]->min_uV; -} - -static int tps65023_dcdc_set_voltage(struct regulator_dev *dev, - int min_uV, int max_uV, - unsigned *selector) -{ - struct tps_pmic *tps = rdev_get_drvdata(dev); - int dcdc = rdev_get_id(dev); - int vsel; - - if (dcdc != TPS65023_DCDC_1) - return -EINVAL; - - if (min_uV < tps->info[dcdc]->min_uV - || min_uV > tps->info[dcdc]->max_uV) - return -EINVAL; - if (max_uV < tps->info[dcdc]->min_uV - || max_uV > tps->info[dcdc]->max_uV) - return -EINVAL; - - for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) { - int mV = tps->info[dcdc]->table[vsel]; - int uV = mV * 1000; - - /* Break at the first in-range value */ - if (min_uV <= uV && uV <= max_uV) - break; - } - - *selector = vsel; - - /* write to the register in case we found a match */ - if (vsel == tps->info[dcdc]->table_len) - return -EINVAL; - else - return tps_65023_reg_write(tps, TPS65023_REG_DEF_CORE, vsel); -} - -static int tps65023_ldo_get_voltage(struct regulator_dev *dev) -{ - struct tps_pmic *tps = rdev_get_drvdata(dev); - int data, ldo = rdev_get_id(dev); - - if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) - return -EINVAL; - - data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL); - if (data < 0) - return data; - - data >>= (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1)); - data &= (tps->info[ldo]->table_len - 1); - return tps->info[ldo]->table[data] * 1000; -} - -static int tps65023_ldo_set_voltage(struct regulator_dev *dev, - int min_uV, int max_uV, unsigned *selector) -{ - struct tps_pmic *tps = rdev_get_drvdata(dev); - int data, vsel, ldo = rdev_get_id(dev); - - if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) - return -EINVAL; - - if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV) - return -EINVAL; - if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV) - return -EINVAL; - - for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) { - int mV = tps->info[ldo]->table[vsel]; - int uV = mV * 1000; - - /* Break at the first in-range value */ - if (min_uV <= uV && uV <= max_uV) - break; - } - - if (vsel == tps->info[ldo]->table_len) - return -EINVAL; - - *selector = vsel; - - data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL); - if (data < 0) - return data; - - data &= TPS65023_LDO_CTRL_LDOx_MASK(ldo - TPS65023_LDO_1); - data |= (vsel << (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1))); - return tps_65023_reg_write(tps, TPS65023_REG_LDO_CTRL, data); -} - -static int tps65023_dcdc_list_voltage(struct regulator_dev *dev, - unsigned selector) -{ - struct tps_pmic *tps = rdev_get_drvdata(dev); - int dcdc = rdev_get_id(dev); - - if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3) - return -EINVAL; - - if (dcdc == TPS65023_DCDC_1) { - if (selector >= tps->info[dcdc]->table_len) - return -EINVAL; - else - return tps->info[dcdc]->table[selector] * 1000; - } else - return tps->info[dcdc]->min_uV; -} - -static int tps65023_ldo_list_voltage(struct regulator_dev *dev, - unsigned selector) -{ - struct tps_pmic *tps = rdev_get_drvdata(dev); - int ldo = rdev_get_id(dev); - - if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2) - return -EINVAL; - - if (selector >= tps->info[ldo]->table_len) - return -EINVAL; - else - return tps->info[ldo]->table[selector] * 1000; -} - -/* Operations permitted on VDCDCx */ -static struct regulator_ops tps65023_dcdc_ops = { - .is_enabled = tps65023_dcdc_is_enabled, - .enable = tps65023_dcdc_enable, - .disable = tps65023_dcdc_disable, - .get_voltage = tps65023_dcdc_get_voltage, - .set_voltage = tps65023_dcdc_set_voltage, - .list_voltage = tps65023_dcdc_list_voltage, -}; - -/* Operations permitted on LDOx */ -static struct regulator_ops tps65023_ldo_ops = { - .is_enabled = tps65023_ldo_is_enabled, - .enable = tps65023_ldo_enable, - .disable = tps65023_ldo_disable, - .get_voltage = tps65023_ldo_get_voltage, - .set_voltage = tps65023_ldo_set_voltage, - .list_voltage = tps65023_ldo_list_voltage, -}; - -static int __devinit tps_65023_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - const struct tps_info *info = (void *)id->driver_data; - struct regulator_init_data *init_data; - struct regulator_dev *rdev; - struct tps_pmic *tps; - int i; - int error; - - if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) - return -EIO; - - /** - * init_data points to array of regulator_init structures - * coming from the board-evm file. - */ - init_data = client->dev.platform_data; - if (!init_data) - return -EIO; - - tps = kzalloc(sizeof(*tps), GFP_KERNEL); - if (!tps) - return -ENOMEM; - - mutex_init(&tps->io_lock); - - /* common for all regulators */ - tps->client = client; - - for (i = 0; i < TPS65023_NUM_REGULATOR; i++, info++, init_data++) { - /* Store regulator specific information */ - tps->info[i] = info; - - tps->desc[i].name = info->name; - tps->desc[i].id = i; - tps->desc[i].n_voltages = num_voltages[i]; - tps->desc[i].ops = (i > TPS65023_DCDC_3 ? - &tps65023_ldo_ops : &tps65023_dcdc_ops); - tps->desc[i].type = REGULATOR_VOLTAGE; - tps->desc[i].owner = THIS_MODULE; - - /* Register the regulators */ - rdev = regulator_register(&tps->desc[i], &client->dev, - init_data, tps); - if (IS_ERR(rdev)) { - dev_err(&client->dev, "failed to register %s\n", - id->name); - error = PTR_ERR(rdev); - goto fail; - } - - /* Save regulator for cleanup */ - tps->rdev[i] = rdev; - } - - i2c_set_clientdata(client, tps); - - return 0; - - fail: - while (--i >= 0) - regulator_unregister(tps->rdev[i]); - - kfree(tps); - return error; -} - -/** - * tps_65023_remove - TPS65023 driver i2c remove handler - * @client: i2c driver client device structure - * - * Unregister TPS driver as an i2c client device driver - */ -static int __devexit tps_65023_remove(struct i2c_client *client) -{ - struct tps_pmic *tps = i2c_get_clientdata(client); - int i; - - for (i = 0; i < TPS65023_NUM_REGULATOR; i++) - regulator_unregister(tps->rdev[i]); - - kfree(tps); - - return 0; -} - -static const struct tps_info tps65023_regs[] = { - { - .name = "VDCDC1", - .min_uV = 800000, - .max_uV = 1600000, - .table_len = ARRAY_SIZE(VDCDC1_VSEL_table), - .table = VDCDC1_VSEL_table, - }, - { - .name = "VDCDC2", - .min_uV = 3300000, - .max_uV = 3300000, - .fixed = 1, - }, - { - .name = "VDCDC3", - .min_uV = 1800000, - .max_uV = 1800000, - .fixed = 1, - }, - { - .name = "LDO1", - .min_uV = 1000000, - .max_uV = 3150000, - .table_len = ARRAY_SIZE(LDO1_VSEL_table), - .table = LDO1_VSEL_table, - }, - { - .name = "LDO2", - .min_uV = 1050000, - .max_uV = 3300000, - .table_len = ARRAY_SIZE(LDO2_VSEL_table), - .table = LDO2_VSEL_table, - }, -}; - -static const struct i2c_device_id tps_65023_id[] = { - {.name = "tps65023", - .driver_data = (unsigned long) tps65023_regs,}, - {.name = "tps65021", - .driver_data = (unsigned long) tps65023_regs,}, - { }, -}; - -MODULE_DEVICE_TABLE(i2c, tps_65023_id); - -static struct i2c_driver tps_65023_i2c_driver = { - .driver = { - .name = "tps65023", - .owner = THIS_MODULE, - }, - .probe = tps_65023_probe, - .remove = __devexit_p(tps_65023_remove), - .id_table = tps_65023_id, -}; - -/** - * tps_65023_init - * - * Module init function - */ -static int __init tps_65023_init(void) -{ - return i2c_add_driver(&tps_65023_i2c_driver); -} -subsys_initcall(tps_65023_init); - -/** - * tps_65023_cleanup - * - * Module exit function - */ -static void __exit tps_65023_cleanup(void) -{ - i2c_del_driver(&tps_65023_i2c_driver); -} -module_exit(tps_65023_cleanup); - -MODULE_AUTHOR("Texas Instruments"); -MODULE_DESCRIPTION("TPS65023 voltage regulator driver"); -MODULE_LICENSE("GPL v2"); diff --git a/drivers/regulator/tps6502x-regulator.c b/drivers/regulator/tps6502x-regulator.c new file mode 100644 index 0000000..df2ec73 --- /dev/null +++ b/drivers/regulator/tps6502x-regulator.c @@ -0,0 +1,751 @@ +/* + * tps6502x-regulator.c + * + * Supports TPS65020 and TPS65023 Regulator + * + * Copyright (C) 2011 Marcus Folkesson + * + * Based on: + * tps65023-regulator.c + * + * Supports TPS65023 Regulator + * + * Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/ + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind, + * whether express or implied; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Register definitions */ +#define TPS6502X_REG_VERSION 0 +#define TPS6502X_REG_PGOODZ 1 +#define TPS6502X_REG_MASK 2 +#define TPS6502X_REG_REG_CTRL 3 +#define TPS6502X_REG_CON_CTRL 4 +#define TPS6502X_REG_CON_CTRL2 5 +#define TPS6502X_REG_DEF_CORE 6 +#define TPS6502X_REG_DEFSLEW 7 +#define TPS6502X_REG_LDO_CTRL 8 + +/* PGOODZ bitfields */ +#define TPS6502X_PGOODZ_PWRFAILZ BIT(7) +#define TPS6502X_PGOODZ_LOWBATTZ BIT(6) +#define TPS6502X_PGOODZ_VDCDC1 BIT(5) +#define TPS6502X_PGOODZ_VDCDC2 BIT(4) +#define TPS6502X_PGOODZ_VDCDC3 BIT(3) +#define TPS6502X_PGOODZ_LDO2 BIT(2) +#define TPS6502X_PGOODZ_LDO1 BIT(1) + +/* MASK bitfields */ +#define TPS6502X_MASK_PWRFAILZ BIT(7) +#define TPS6502X_MASK_LOWBATTZ BIT(6) +#define TPS6502X_MASK_VDCDC1 BIT(5) +#define TPS6502X_MASK_VDCDC2 BIT(4) +#define TPS6502X_MASK_VDCDC3 BIT(3) +#define TPS6502X_MASK_LDO2 BIT(2) +#define TPS6502X_MASK_LDO1 BIT(1) + +/* REG_CTRL bitfields */ +#define TPS6502X_REG_CTRL_VDCDC1_EN BIT(5) +#define TPS6502X_REG_CTRL_VDCDC2_EN BIT(4) +#define TPS6502X_REG_CTRL_VDCDC3_EN BIT(3) +#define TPS6502X_REG_CTRL_LDO2_EN BIT(2) +#define TPS6502X_REG_CTRL_LDO1_EN BIT(1) + +/* REG_CTRL2 bitfields */ +#define TPS6502X_REG_CTRL2_GO BIT(7) +#define TPS6502X_REG_CTRL2_CORE_ADJ BIT(6) +#define TPS6502X_REG_CTRL2_DCDC2 BIT(2) +#define TPS6502X_REG_CTRL2_DCDC1 BIT(2) +#define TPS6502X_REG_CTRL2_DCDC3 BIT(0) + +/* LDO_CTRL bitfields */ +#define TPS6502X_LDO_CTRL_LDOx_SHIFT(ldo_id) ((ldo_id)*4) +#define TPS6502X_LDO_CTRL_LDOx_MASK(ldo_id) (0xF0 >> ((ldo_id)*4)) + +/* Number of step-down converters available */ +#define TPS6502X_NUM_DCDC 3 +/* Number of LDO voltage regulators available */ +#define TPS6502X_NUM_LDO 2 +/* Number of total regulators available */ +#define TPS6502X_NUM_REGULATOR (TPS6502X_NUM_DCDC + TPS6502X_NUM_LDO) + +/* DCDCs */ +#define TPS6502X_DCDC_1 0 +#define TPS6502X_DCDC_2 1 +#define TPS6502X_DCDC_3 2 +/* LDOs */ +#define TPS6502X_LDO_1 3 +#define TPS6502X_LDO_2 4 + +#define TPS6502X_MAX_REG_ID TPS6502X_LDO_2 + + +/* Supported voltage value for core regulator */ +static const u16 VCORE_VSEL_table[] = { + 800, 825, 850, 875, + 900, 925, 950, 975, + 1000, 1025, 1050, 1075, + 1100, 1125, 1150, 1175, + 1200, 1225, 1250, 1275, + 1300, 1325, 1350, 1375, + 1400, 1425, 1450, 1475, + 1500, 1525, 1550, 1600, +}; + + +/* Supported voltage values for LDO regulators for tps65020 */ +static const u16 TPS65020_LDO1_VSEL_table[] = { + 1000, 1050, 1100, 1300, + 1800, 2500, 3000, 3300, +}; + +static const u16 TPS65020_LDO2_VSEL_table[] = { + 1000, 1050, 1100, 1300, + 1800, 2500, 3000, 3300, +}; + + +static unsigned int tps65020_num_voltages[] = { + 0, + 0, + ARRAY_SIZE(VCORE_VSEL_table), + ARRAY_SIZE(TPS65020_LDO1_VSEL_table), + ARRAY_SIZE(TPS65020_LDO2_VSEL_table) +}; + + +/* Supported voltage values for LDO regulators for tps65023 */ +static const u16 TPS65023_LDO1_VSEL_table[] = { + 1000, 1100, 1300, 1800, + 2200, 2600, 2800, 3150, +}; + +static const u16 TPS65023_LDO2_VSEL_table[] = { + 1050, 1200, 1300, 1800, + 2500, 2800, 3000, 3300, +}; + + +static unsigned int tps65023_num_voltages[] = { + ARRAY_SIZE(VCORE_VSEL_table), + 0, + 0, + ARRAY_SIZE(TPS65023_LDO1_VSEL_table), + ARRAY_SIZE(TPS65023_LDO2_VSEL_table) +}; + +/* Regulator specific details */ +struct tps_info { + const char *name; + unsigned min_uV; + unsigned max_uV; + bool fixed; + u8 table_len; + const u16 *table; +}; + +/* PMIC details */ +struct tps_pmic { + struct regulator_desc desc[TPS6502X_NUM_REGULATOR]; + struct i2c_client *client; + struct regulator_dev *rdev[TPS6502X_NUM_REGULATOR]; + const struct tps_info *info[TPS6502X_NUM_REGULATOR]; + struct mutex io_lock; + u8 core_regulator; +}; + +/* Struct passed as driver data */ +struct tps_driver_data { + struct tps_info *info; + u8 core_regulator; + unsigned int *num_voltages; +}; + +static inline int tps_6502x_read(struct tps_pmic *tps, u8 reg) +{ + return i2c_smbus_read_byte_data(tps->client, reg); +} + +static inline int tps_6502x_write(struct tps_pmic *tps, u8 reg, u8 val) +{ + return i2c_smbus_write_byte_data(tps->client, reg, val); +} + +static int tps_6502x_set_bits(struct tps_pmic *tps, u8 reg, u8 mask) +{ + int err, data; + + mutex_lock(&tps->io_lock); + + data = tps_6502x_read(tps, reg); + if (data < 0) { + dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); + err = data; + goto out; + } + + data |= mask; + err = tps_6502x_write(tps, reg, data); + if (err) + dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); + +out: + mutex_unlock(&tps->io_lock); + return err; +} + +static int tps_6502x_clear_bits(struct tps_pmic *tps, u8 reg, u8 mask) +{ + int err, data; + + mutex_lock(&tps->io_lock); + + data = tps_6502x_read(tps, reg); + if (data < 0) { + dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); + err = data; + goto out; + } + + data &= ~mask; + + err = tps_6502x_write(tps, reg, data); + if (err) + dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); + +out: + mutex_unlock(&tps->io_lock); + return err; + +} + +static int tps_6502x_reg_read(struct tps_pmic *tps, u8 reg) +{ + int data; + + mutex_lock(&tps->io_lock); + + data = tps_6502x_read(tps, reg); + if (data < 0) + dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg); + + mutex_unlock(&tps->io_lock); + return data; +} + +static int tps_6502x_reg_write(struct tps_pmic *tps, u8 reg, u8 val) +{ + int err; + + mutex_lock(&tps->io_lock); + + err = tps_6502x_write(tps, reg, val); + if (err < 0) + dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg); + + mutex_unlock(&tps->io_lock); + return err; +} + +static int tps6502x_dcdc_is_enabled(struct regulator_dev *dev) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int data, dcdc = rdev_get_id(dev); + u8 shift; + + if (dcdc < TPS6502X_DCDC_1 || dcdc > TPS6502X_DCDC_3) + return -EINVAL; + + shift = TPS6502X_NUM_REGULATOR - dcdc; + data = tps_6502x_reg_read(tps, TPS6502X_REG_REG_CTRL); + + if (data < 0) + return data; + else + return (data & 1< TPS6502X_LDO_2) + return -EINVAL; + + shift = (ldo == TPS6502X_LDO_1 ? 1 : 2); + data = tps_6502x_reg_read(tps, TPS6502X_REG_REG_CTRL); + + if (data < 0) + return data; + else + return (data & 1< TPS6502X_DCDC_3) + return -EINVAL; + + shift = TPS6502X_NUM_REGULATOR - dcdc; + return tps_6502x_set_bits(tps, TPS6502X_REG_REG_CTRL, 1 << shift); +} + +static int tps6502x_dcdc_disable(struct regulator_dev *dev) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int dcdc = rdev_get_id(dev); + u8 shift; + + if (dcdc < TPS6502X_DCDC_1 || dcdc > TPS6502X_DCDC_3) + return -EINVAL; + + shift = TPS6502X_NUM_REGULATOR - dcdc; + return tps_6502x_clear_bits(tps, TPS6502X_REG_REG_CTRL, 1 << shift); +} + +static int tps6502x_ldo_enable(struct regulator_dev *dev) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev); + u8 shift; + + if (ldo < TPS6502X_LDO_1 || ldo > TPS6502X_LDO_2) + return -EINVAL; + + shift = (ldo == TPS6502X_LDO_1 ? 1 : 2); + return tps_6502x_set_bits(tps, TPS6502X_REG_REG_CTRL, 1 << shift); +} + +static int tps6502x_ldo_disable(struct regulator_dev *dev) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev); + u8 shift; + + if (ldo < TPS6502X_LDO_1 || ldo > TPS6502X_LDO_2) + return -EINVAL; + + shift = (ldo == TPS6502X_LDO_1 ? 1 : 2); + return tps_6502x_clear_bits(tps, TPS6502X_REG_REG_CTRL, 1 << shift); +} + +static int tps6502x_dcdc_get_voltage(struct regulator_dev *dev) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int data, dcdc = rdev_get_id(dev); + + if (dcdc < TPS6502X_DCDC_1 || dcdc > TPS6502X_DCDC_3) + return -EINVAL; + + if (dcdc == tps->core_regulator) { + data = tps_6502x_reg_read(tps, TPS6502X_REG_DEF_CORE); + if (data < 0) + return data; + data &= (tps->info[dcdc]->table_len - 1); + return tps->info[dcdc]->table[data] * 1000; + } else + return tps->info[dcdc]->min_uV; +} + +static int tps6502x_dcdc_set_voltage(struct regulator_dev *dev, + int min_uV, int max_uV) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int dcdc = rdev_get_id(dev); + int vsel; + int ret; + + if (dcdc != tps->core_regulator) + return -EINVAL; + + if (min_uV < tps->info[dcdc]->min_uV + || min_uV > tps->info[dcdc]->max_uV) + return -EINVAL; + if (max_uV < tps->info[dcdc]->min_uV + || max_uV > tps->info[dcdc]->max_uV) + return -EINVAL; + + for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) { + int mV = tps->info[dcdc]->table[vsel]; + int uV = mV * 1000; + + /* Break at the first in-range value */ + if (min_uV <= uV && uV <= max_uV) + break; + } + + /* write to the register in case we found a match */ + if (vsel == tps->info[dcdc]->table_len) { + ret = -EINVAL; + } else { + ret = tps_6502x_reg_write(tps, TPS6502X_REG_DEF_CORE, vsel); + + /* Tell the chip that we have changed the value in DEFCORE + * and its time to update the core voltage + */ + tps_6502x_set_bits(tps, TPS6502X_REG_CON_CTRL2, + TPS6502X_REG_CTRL2_GO); + } + + return ret; +} + +static int tps6502x_ldo_get_voltage(struct regulator_dev *dev) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int data, ldo = rdev_get_id(dev); + + if (ldo < TPS6502X_LDO_1 || ldo > TPS6502X_LDO_2) + return -EINVAL; + + data = tps_6502x_reg_read(tps, TPS6502X_REG_LDO_CTRL); + if (data < 0) + return data; + + data >>= (TPS6502X_LDO_CTRL_LDOx_SHIFT(ldo - TPS6502X_LDO_1)); + data &= (tps->info[ldo]->table_len - 1); + return tps->info[ldo]->table[data] * 1000; +} + +static int tps6502x_ldo_set_voltage(struct regulator_dev *dev, + int min_uV, int max_uV) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int data, vsel, ldo = rdev_get_id(dev); + + if (ldo < TPS6502X_LDO_1 || ldo > TPS6502X_LDO_2) + return -EINVAL; + + if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV) + return -EINVAL; + if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV) + return -EINVAL; + + for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) { + int mV = tps->info[ldo]->table[vsel]; + int uV = mV * 1000; + + /* Break at the first in-range value */ + if (min_uV <= uV && uV <= max_uV) + break; + } + + if (vsel == tps->info[ldo]->table_len) + return -EINVAL; + + data = tps_6502x_reg_read(tps, TPS6502X_REG_LDO_CTRL); + if (data < 0) + return data; + + data &= TPS6502X_LDO_CTRL_LDOx_MASK(ldo - TPS6502X_LDO_1); + data |= (vsel << (TPS6502X_LDO_CTRL_LDOx_SHIFT(ldo - TPS6502X_LDO_1))); + return tps_6502x_reg_write(tps, TPS6502X_REG_LDO_CTRL, data); +} + +static int tps6502x_dcdc_list_voltage(struct regulator_dev *dev, + unsigned selector) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int dcdc = rdev_get_id(dev); + + if (dcdc < TPS6502X_DCDC_1 || dcdc > TPS6502X_DCDC_3) + return -EINVAL; + + if (dcdc == tps->core_regulator) { + if (selector >= tps->info[dcdc]->table_len) + return -EINVAL; + else + return tps->info[dcdc]->table[selector] * 1000; + } else + return tps->info[dcdc]->min_uV; +} + +static int tps6502x_ldo_list_voltage(struct regulator_dev *dev, + unsigned selector) +{ + struct tps_pmic *tps = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev); + + if (ldo < TPS6502X_LDO_1 || ldo > TPS6502X_LDO_2) + return -EINVAL; + + if (selector >= tps->info[ldo]->table_len) + return -EINVAL; + else + return tps->info[ldo]->table[selector] * 1000; +} + +/* Operations permitted on VDCDCx */ +static struct regulator_ops tps6502x_dcdc_ops = { + .is_enabled = tps6502x_dcdc_is_enabled, + .enable = tps6502x_dcdc_enable, + .disable = tps6502x_dcdc_disable, + .get_voltage = tps6502x_dcdc_get_voltage, + .set_voltage = tps6502x_dcdc_set_voltage, + .list_voltage = tps6502x_dcdc_list_voltage, +}; + +/* Operations permitted on LDOx */ +static struct regulator_ops tps6502x_ldo_ops = { + .is_enabled = tps6502x_ldo_is_enabled, + .enable = tps6502x_ldo_enable, + .disable = tps6502x_ldo_disable, + .get_voltage = tps6502x_ldo_get_voltage, + .set_voltage = tps6502x_ldo_set_voltage, + .list_voltage = tps6502x_ldo_list_voltage, +}; + +static +int tps_6502x_probe(struct i2c_client *client, const struct i2c_device_id *id) +{ + static int desc_id; + const struct tps_driver_data *drv_data = (void *)id->driver_data; + const struct tps_info *info = drv_data->info; + struct regulator_init_data *init_data; + struct regulator_dev *rdev; + struct tps_pmic *tps; + int i; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -EIO; + + /** + * init_data points to array of regulator_init structures + * coming from the board-evm file. + */ + init_data = client->dev.platform_data; + + if (!init_data) + return -EIO; + + tps = kzalloc(sizeof(*tps), GFP_KERNEL); + if (!tps) + return -ENOMEM; + + mutex_init(&tps->io_lock); + + /* common for all regulators */ + tps->client = client; + tps->core_regulator = drv_data->core_regulator; + + for (i = 0; i < TPS6502X_NUM_REGULATOR; i++, info++, init_data++) { + /* Store regulator specific information */ + tps->info[i] = info; + + tps->desc[i].name = info->name; + tps->desc[i].id = desc_id++; + tps->desc[i].n_voltages = drv_data->num_voltages[i]; + tps->desc[i].ops = (i > TPS6502X_DCDC_3 ? + &tps6502x_ldo_ops : &tps6502x_dcdc_ops); + tps->desc[i].type = REGULATOR_VOLTAGE; + tps->desc[i].owner = THIS_MODULE; + + /* Register the regulators */ + rdev = regulator_register(&tps->desc[i], &client->dev, + init_data, tps); + if (IS_ERR(rdev)) { + dev_err(&client->dev, "failed to register %s\n", + id->name); + + /* Unregister */ + while (i) + regulator_unregister(tps->rdev[--i]); + + tps->client = NULL; + + /* clear the client data in i2c */ + i2c_set_clientdata(client, NULL); + kfree(tps); + return PTR_ERR(rdev); + } + + /* Save regulator for cleanup */ + tps->rdev[i] = rdev; + } + + i2c_set_clientdata(client, tps); + + /* Enable setting output voltage by I2C */ + tps_6502x_clear_bits(tps, TPS6502X_REG_CON_CTRL2, + TPS6502X_REG_CTRL2_CORE_ADJ); + + return 0; +} + +/** + * tps_6502x_remove - TPS6502X driver i2c remove handler + * @client: i2c driver client device structure + * + * Unregister TPS driver as an i2c client device driver + */ +static int __devexit tps_6502x_remove(struct i2c_client *client) +{ + struct tps_pmic *tps = i2c_get_clientdata(client); + int i; + + for (i = 0; i < TPS6502X_NUM_REGULATOR; i++) + regulator_unregister(tps->rdev[i]); + + tps->client = NULL; + + /* clear the client data in i2c */ + i2c_set_clientdata(client, NULL); + kfree(tps); + + return 0; +} + + + +static const struct tps_info tps65020_regs[] = { + { + .name = "VDCDC1", + .min_uV = 3300000, + .max_uV = 3300000, + .fixed = 1, + }, + { + .name = "VDCDC2", + .min_uV = 1800000, + .max_uV = 1800000, + .fixed = 1, + }, + { + .name = "VDCDC3", + .min_uV = 800000, + .max_uV = 1600000, + .table_len = ARRAY_SIZE(VCORE_VSEL_table), + .table = VCORE_VSEL_table, + }, + + { + .name = "LDO1", + .min_uV = 1000000, + .max_uV = 3150000, + .table_len = ARRAY_SIZE(TPS65020_LDO1_VSEL_table), + .table = TPS65020_LDO1_VSEL_table, + }, + { + .name = "LDO2", + .min_uV = 1050000, + .max_uV = 3300000, + .table_len = ARRAY_SIZE(TPS65020_LDO2_VSEL_table), + .table = TPS65020_LDO2_VSEL_table, + }, +}; + +static const struct tps_info tps65023_regs[] = { + { + .name = "VDCDC1", + .min_uV = 800000, + .max_uV = 1600000, + .table_len = ARRAY_SIZE(VCORE_VSEL_table), + .table = VCORE_VSEL_table, + }, + { + .name = "VDCDC2", + .min_uV = 3300000, + .max_uV = 3300000, + .fixed = 1, + }, + { + .name = "VDCDC3", + .min_uV = 1800000, + .max_uV = 1800000, + .fixed = 1, + }, + { + .name = "LDO1", + .min_uV = 1000000, + .max_uV = 3150000, + .table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table), + .table = TPS65023_LDO1_VSEL_table, + }, + { + .name = "LDO2", + .min_uV = 1050000, + .max_uV = 3300000, + .table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table), + .table = TPS65023_LDO2_VSEL_table, + }, +}; + + +struct tps_driver_data tps65020_drv_data = { + .info = tps65020_regs, + .core_regulator = TPS6502X_DCDC_3, + .num_voltages = tps65020_num_voltages, +}; + +struct tps_driver_data tps65023_drv_data = { + .info = tps65023_regs, + .core_regulator = TPS6502X_DCDC_1, + .num_voltages = tps65023_num_voltages, +}; + +static const struct i2c_device_id tps_6502x_id[] = { + {"tps65020", (unsigned long) &tps65020_drv_data,}, + {"tps65023", (unsigned long) &tps65023_drv_data,}, + { }, +}; + +MODULE_DEVICE_TABLE(i2c, tps_6502x_id); + +static struct i2c_driver tps_6502x_i2c_driver = { + .driver = { + .name = "tps6502x", + .owner = THIS_MODULE, + }, + .probe = tps_6502x_probe, + .remove = __devexit_p(tps_6502x_remove), + .id_table = tps_6502x_id, +}; + +/** + * tps_6502x_init + * + * Module init function + */ +static int __init tps_6502x_init(void) +{ + return i2c_add_driver(&tps_6502x_i2c_driver); +} +subsys_initcall(tps_6502x_init); + +/** + * tps_6502x_cleanup + * + * Module exit function + */ +static void __exit tps_6502x_cleanup(void) +{ + i2c_del_driver(&tps_6502x_i2c_driver); +} +module_exit(tps_6502x_cleanup); + +MODULE_AUTHOR("Texas Instruments, Marcus Folkesson "); +MODULE_DESCRIPTION("TPS6502X voltage regulator driver"); +MODULE_LICENSE("GPL v2"); -- 1.7.4.1