This patch adds tps65217 PMIC as a regulator The regulator module consists of 3 DCDCs and 4 LDOs. The output voltages are configurable and are meant to supply power to the main processor and other components Signed-off-by: AnilKumar Ch <anilkumar@xxxxxx> --- drivers/regulator/Kconfig | 9 + drivers/regulator/Makefile | 1 + drivers/regulator/tps65217-regulator.c | 493 ++++++++++++++++++++++++++++++++ 3 files changed, 503 insertions(+), 0 deletions(-) create mode 100644 drivers/regulator/tps65217-regulator.c diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 9713b1b..529c591 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -259,6 +259,15 @@ config REGULATOR_TPS6507X three step-down converters and two general-purpose LDO voltage regulators. It supports TI's software based Class-2 SmartReflex implementation. +config REGULATOR_TPS65217 + tristate "TI TPS65217 Power regulators" + depends on MFD_TPS65217 + help + This driver supports TPS65217 voltage regulator chips. TPS65217 + provides three step-down converters and four general-purpose LDO + voltage regulators. It supports software based voltage control + for different voltage domains + config REGULATOR_TPS65912 tristate "TI TPS65912 Power regulator" depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI) diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 93a6318..aeae546 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -38,6 +38,7 @@ obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o obj-$(CONFIG_REGULATOR_TPS6105X) += tps6105x-regulator.o obj-$(CONFIG_REGULATOR_TPS65023) += tps65023-regulator.o obj-$(CONFIG_REGULATOR_TPS6507X) += tps6507x-regulator.o +obj-$(CONFIG_REGULATOR_TPS65217) += tps65217-regulator.o obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o obj-$(CONFIG_REGULATOR_88PM8607) += 88pm8607.o diff --git a/drivers/regulator/tps65217-regulator.c b/drivers/regulator/tps65217-regulator.c new file mode 100644 index 0000000..6665566 --- /dev/null +++ b/drivers/regulator/tps65217-regulator.c @@ -0,0 +1,493 @@ +/* + * tps65217-regulator.c + * + * Regulator driver for TPS65217 PMIC + * + * Copyright (C) 2011 Texas Instruments 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 <linux/kernel.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/init.h> +#include <linux/err.h> +#include <linux/platform_device.h> + +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> +#include <linux/mfd/tps65217.h> + +#define TPS65217_REGULATOR(_name, _id, _ops, _n) \ + { \ + .name = _name, \ + .id = _id, \ + .ops = &_ops, \ + .n_voltages = _n, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + } \ + +#define TPS65217_INFO(_nm, _min, _max, _f1, _f2, _t, _n, _em, _vr, _vm) \ + { \ + .name = _nm, \ + .min_uV = _min, \ + .max_uV = _max, \ + .vsel_to_uv = _f1, \ + .uv_to_vsel = _f2, \ + .table = _t, \ + .table_len = _n, \ + .enable_mask = _em, \ + .set_vout_reg = _vr, \ + .set_vout_mask = _vm, \ + } + +static const int LDO1_VSEL_table[] = { + 1000000, 1100000, 1200000, 1250000, + 1300000, 1350000, 1400000, 1500000, + 1600000, 1800000, 2500000, 2750000, + 2800000, 3000000, 3100000, 3300000, +}; + +static int tps65217_vsel_to_uv1(unsigned int vsel) +{ + int uV = 0; + + if (vsel > 63) + return -EINVAL; + + if (vsel <= 24) + uV = vsel * 25000 + 900000; + else if (vsel <= 52) + uV = (vsel - 24) * 50000 + 1500000; + else if (vsel < 56) + uV = (vsel - 52) * 100000 + 2900000; + else + uV = 3300000; + + return uV; +} + +static int tps65217_uv_to_vsel1(int uV, unsigned int *vsel) +{ + if ((uV < 0) && (uV > 3300000)) + return -EINVAL; + + if (uV <= 1500000) + *vsel = (uV - 875001) / 25000; + else if (uV <= 2900000) + *vsel = 24 + (uV - 1450001) / 50000; + else if (uV < 3300000) + *vsel = 52 + (uV - 2800001) / 100000; + else + *vsel = 56; + + return 0; +} + +static int tps65217_vsel_to_uv2(unsigned int vsel) +{ + int uV = 0; + + if (vsel > 31) + return -EINVAL; + + if (vsel <= 8) + uV = vsel * 50000 + 1500000; + else if (vsel <= 13) + uV = (vsel - 8) * 100000 + 1900000; + else + uV = (vsel - 13) * 50000 + 2400000; + + return uV; +} + +static int tps65217_uv_to_vsel2(int uV, unsigned int *vsel) +{ + if ((uV < 0) && (uV > 3300000)) + return -EINVAL; + + if (uV <= 1900000) + *vsel = (uV - 1450001) / 50000; + else if (uV <= 2400000) + *vsel = 8 + (uV - 1800001) / 100000; + else + *vsel = 13 + (uV - 2350001) / 50000; + + return 0; +} + +static struct tps_info tps65217_pmic_regs[] = { + TPS65217_INFO("DCDC1", 900000, 1800000, tps65217_vsel_to_uv1, + tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_DC1_EN, + TPS65217_REG_DEFDCDC1, TPS65217_DEFDCDCX_DCDC_MASK), + TPS65217_INFO("DCDC2", 900000, 3300000, tps65217_vsel_to_uv1, + tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_DC2_EN, + TPS65217_REG_DEFDCDC2, TPS65217_DEFDCDCX_DCDC_MASK), + TPS65217_INFO("DCDC3", 900000, 1500000, tps65217_vsel_to_uv1, + tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_DC3_EN, + TPS65217_REG_DEFDCDC3, TPS65217_DEFDCDCX_DCDC_MASK), + TPS65217_INFO("LDO1", 1000000, 3300000, NULL, NULL, LDO1_VSEL_table, + 16, TPS65217_ENABLE_LDO1_EN, TPS65217_REG_DEFLDO1, + TPS65217_DEFLDO1_LDO1_MASK), + TPS65217_INFO("LDO2", 900000, 3300000, tps65217_vsel_to_uv1, + tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_LDO2_EN, + TPS65217_REG_DEFLDO2, TPS65217_DEFLDO2_LDO2_MASK), + TPS65217_INFO("LDO3", 1800000, 3300000, tps65217_vsel_to_uv2, + tps65217_uv_to_vsel2, NULL, 32, + TPS65217_ENABLE_LS1_EN | TPS65217_DEFLDO3_LDO3_EN, + TPS65217_REG_DEFLS1, TPS65217_DEFLDO3_LDO3_MASK), + TPS65217_INFO("LDO4", 1800000, 3300000, tps65217_vsel_to_uv2, + tps65217_uv_to_vsel2, NULL, 32, + TPS65217_ENABLE_LS2_EN | TPS65217_DEFLDO4_LDO4_EN, + TPS65217_REG_DEFLS2, TPS65217_DEFLDO4_LDO4_MASK), +}; + +static int tps65217_pmic_dcdc_is_enabled(struct regulator_dev *dev) +{ + int ret; + struct tps65217 *tps = rdev_get_drvdata(dev); + unsigned int data, dcdc = rdev_get_id(dev); + + if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3) + return -EINVAL; + + ret = tps65217_reg_read(tps, TPS65217_REG_ENABLE, &data); + if (ret) + return ret; + + return (data & tps->info[dcdc]->enable_mask) ? 1 : 0; +} + +static int tps65217_pmic_ldo_is_enabled(struct regulator_dev *dev) +{ + int ret; + struct tps65217 *tps = rdev_get_drvdata(dev); + unsigned int data, ldo = rdev_get_id(dev); + + if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4) + return -EINVAL; + + ret = tps65217_reg_read(tps, TPS65217_REG_ENABLE, &data); + if (ret) + return ret; + + return (data & tps->info[ldo]->enable_mask) ? 1 : 0; +} + +static int tps65217_pmic_dcdc_enable(struct regulator_dev *dev) +{ + struct tps65217 *tps = rdev_get_drvdata(dev); + unsigned int dcdc = rdev_get_id(dev); + + if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3) + return -EINVAL; + + /* Enable the regulator and password protection is level 1 */ + return tps65217_set_bits(tps, TPS65217_REG_ENABLE, + tps->info[dcdc]->enable_mask, + tps->info[dcdc]->enable_mask, + TPS65217_PROTECT_L1); +} + +static int tps65217_pmic_dcdc_disable(struct regulator_dev *dev) +{ + struct tps65217 *tps = rdev_get_drvdata(dev); + unsigned int dcdc = rdev_get_id(dev); + + if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3) + return -EINVAL; + + /* Disable the regulator and password protection is level 1 */ + return tps65217_clear_bits(tps, TPS65217_REG_ENABLE, + tps->info[dcdc]->enable_mask, TPS65217_PROTECT_L1); +} + +static int tps65217_pmic_ldo_enable(struct regulator_dev *dev) +{ + struct tps65217 *tps = rdev_get_drvdata(dev); + unsigned int ldo = rdev_get_id(dev); + + if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4) + return -EINVAL; + + /* Enable the regulator and password protection is level 1 */ + return tps65217_set_bits(tps, TPS65217_REG_ENABLE, + tps->info[ldo]->enable_mask, + tps->info[ldo]->enable_mask, + TPS65217_PROTECT_L1); +} + +static int tps65217_pmic_ldo_disable(struct regulator_dev *dev) +{ + struct tps65217 *tps = rdev_get_drvdata(dev); + unsigned int ldo = rdev_get_id(dev); + + if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4) + return -EINVAL; + + /* Disable the regulator and password protection is level 1 */ + return tps65217_clear_bits(tps, TPS65217_REG_ENABLE, + tps->info[ldo]->enable_mask, TPS65217_PROTECT_L1); +} + +static int tps65217_pmic_dcdc_get_voltage_sel(struct regulator_dev *dev) +{ + int ret; + struct tps65217 *tps = rdev_get_drvdata(dev); + unsigned int selector, dcdc = rdev_get_id(dev); + + if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3) + return -EINVAL; + + ret = tps65217_reg_read(tps, tps->info[dcdc]->set_vout_reg, &selector); + if (ret) + return ret; + + selector &= tps->info[dcdc]->set_vout_mask; + + return selector; +} + +static int tps65217_pmic_dcdc_set_voltage(struct regulator_dev *dev, + int min_uV, int max_uV, unsigned *selector) +{ + int ret; + struct tps65217 *tps = rdev_get_drvdata(dev); + unsigned int dcdc = rdev_get_id(dev); + + if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3) + 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; + + ret = tps->info[dcdc]->uv_to_vsel(min_uV, selector); + if (ret) + return ret; + + /* Set the voltage based on vsel value and write protect level is 2 */ + ret = tps65217_set_bits(tps, tps->info[dcdc]->set_vout_reg, + tps->info[dcdc]->set_vout_mask, + *selector, TPS65217_PROTECT_L2); + if (ret) + return ret; + + /* Set GO bit to initiate voltage transistion */ + return tps65217_set_bits(tps, TPS65217_REG_DEFSLEW, + TPS65217_DEFSLEW_GO, TPS65217_DEFSLEW_GO, + TPS65217_PROTECT_L2); +} + +static int tps65217_pmic_ldo_get_voltage_sel(struct regulator_dev *dev) +{ + int ret; + struct tps65217 *tps = rdev_get_drvdata(dev); + unsigned int selector, ldo = rdev_get_id(dev); + + if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4) + return -EINVAL; + + ret = tps65217_reg_read(tps, tps->info[ldo]->set_vout_reg, &selector); + if (ret) + return ret; + + selector &= tps->info[ldo]->set_vout_mask; + + return selector; +} + +static int tps65217_pmic_ldo_set_voltage_sel(struct regulator_dev *dev, + unsigned selector) +{ + struct tps65217 *tps = rdev_get_drvdata(dev); + int ldo = rdev_get_id(dev); + + if (ldo != TPS65217_LDO_1) + return -EINVAL; + + if (selector >= tps->info[ldo]->table_len) + return -EINVAL; + + /* Set the voltage based on vsel value and write protect level is 2 */ + return tps65217_set_bits(tps, tps->info[ldo]->set_vout_reg, + tps->info[ldo]->set_vout_mask, + selector, TPS65217_PROTECT_L2); +} + +static int tps65217_pmic_ldo_set_voltage(struct regulator_dev *dev, + int min_uV, int max_uV, unsigned *selector) +{ + int ret; + struct tps65217 *tps = rdev_get_drvdata(dev); + unsigned int ldo = rdev_get_id(dev); + + if (ldo < TPS65217_LDO_2 || ldo > TPS65217_LDO_4) + 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; + + ret = tps->info[ldo]->uv_to_vsel(min_uV, selector); + if (ret) + return ret; + + /* Set the voltage based on vsel value and write protect level is 2 */ + return tps65217_set_bits(tps, tps->info[ldo]->set_vout_reg, + tps->info[ldo]->set_vout_mask, + *selector, TPS65217_PROTECT_L2); +} + +static int tps65217_pmic_dcdc_list_voltage(struct regulator_dev *dev, + unsigned selector) +{ + struct tps65217 *tps = rdev_get_drvdata(dev); + unsigned int dcdc = rdev_get_id(dev); + + if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3) + return -EINVAL; + + if (selector >= tps->info[dcdc]->table_len) + return -EINVAL; + + return tps->info[dcdc]->vsel_to_uv(selector); +} + +static int tps65217_pmic_ldo_list_voltage(struct regulator_dev *dev, + unsigned selector) +{ + struct tps65217 *tps = rdev_get_drvdata(dev); + unsigned int ldo = rdev_get_id(dev); + + if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4) + return -EINVAL; + + if (selector >= tps->info[ldo]->table_len) + return -EINVAL; + + if (tps->info[ldo]->table) + return tps->info[ldo]->table[selector]; + + return tps->info[ldo]->vsel_to_uv(selector); +} + +/* Operations permitted on DCDCx */ +static struct regulator_ops tps65217_pmic_dcdc_ops = { + .is_enabled = tps65217_pmic_dcdc_is_enabled, + .enable = tps65217_pmic_dcdc_enable, + .disable = tps65217_pmic_dcdc_disable, + .get_voltage_sel = tps65217_pmic_dcdc_get_voltage_sel, + .set_voltage = tps65217_pmic_dcdc_set_voltage, + .list_voltage = tps65217_pmic_dcdc_list_voltage, +}; + +/* Operations permitted on LDO1 */ +static struct regulator_ops tps65217_pmic_ldo1_ops = { + .is_enabled = tps65217_pmic_ldo_is_enabled, + .enable = tps65217_pmic_ldo_enable, + .disable = tps65217_pmic_ldo_disable, + .get_voltage_sel = tps65217_pmic_ldo_get_voltage_sel, + .set_voltage_sel = tps65217_pmic_ldo_set_voltage_sel, + .list_voltage = tps65217_pmic_ldo_list_voltage, +}; + +/* Operations permitted on LDO2, LDO3 and LDO4 */ +static struct regulator_ops tps65217_pmic_ldo234_ops = { + .is_enabled = tps65217_pmic_ldo_is_enabled, + .enable = tps65217_pmic_ldo_enable, + .disable = tps65217_pmic_ldo_disable, + .get_voltage_sel = tps65217_pmic_ldo_get_voltage_sel, + .set_voltage = tps65217_pmic_ldo_set_voltage, + .list_voltage = tps65217_pmic_ldo_list_voltage, +}; + +static struct regulator_desc regulators[] = { + TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1, + tps65217_pmic_dcdc_ops, 64), + TPS65217_REGULATOR("DCDC2",TPS65217_DCDC_2, + tps65217_pmic_dcdc_ops, 64), + TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3, + tps65217_pmic_dcdc_ops, 64), + TPS65217_REGULATOR("LDO1", TPS65217_LDO_1, + tps65217_pmic_ldo1_ops, 16), + TPS65217_REGULATOR("LDO2", TPS65217_LDO_2, + tps65217_pmic_ldo234_ops, 64), + TPS65217_REGULATOR("LDO3", TPS65217_LDO_3, + tps65217_pmic_ldo234_ops, 32), + TPS65217_REGULATOR("LDO4", TPS65217_LDO_4, + tps65217_pmic_ldo234_ops, 32), +}; + +static int __devinit tps65217_regulator_probe(struct platform_device *pdev) +{ + struct regulator_dev *rdev; + struct tps65217 *tps; + struct tps_info *info = &tps65217_pmic_regs[pdev->id]; + + /* Already set by core driver */ + tps = dev_to_tps65217(pdev->dev.parent); + tps->info[pdev->id] = info; + + rdev = regulator_register(®ulators[pdev->id], &pdev->dev, + pdev->dev.platform_data, tps); + if (IS_ERR(rdev)) + return PTR_ERR(rdev); + + platform_set_drvdata(pdev, rdev); + + return 0; +} + +static int __devexit tps65217_regulator_remove(struct platform_device *pdev) +{ + struct regulator_dev *rdev = platform_get_drvdata(pdev); + + platform_set_drvdata(pdev, NULL); + regulator_unregister(rdev); + + return 0; +} + +static struct platform_driver tps65217_regulator_driver = { + .driver = { + .name = "tps65217-pmic", + }, + .probe = tps65217_regulator_probe, + .remove = __devexit_p(tps65217_regulator_remove), +}; + +static int __init tps65217_regulator_init(void) +{ + return platform_driver_register(&tps65217_regulator_driver); +} +subsys_initcall(tps65217_regulator_init); + +static void __exit tps65217_regulator_exit(void) +{ + platform_driver_unregister(&tps65217_regulator_driver); +} +module_exit(tps65217_regulator_exit); + + +MODULE_AUTHOR("AnilKumar Ch <anilkumar@xxxxxx>"); +MODULE_DESCRIPTION("TPS65217 voltage regulator driver"); +MODULE_ALIAS("platform:tps65217-pmic"); +MODULE_LICENSE("GPL v2"); -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
