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 | 459 ++++++++++++++++++++++++++++++++ 3 files changed, 469 insertions(+), 0 deletions(-) create mode 100644 drivers/regulator/tps65217-regulator.c diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 9713b1b..9fcc919 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 (I2C && 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..65540ff --- /dev/null +++ b/drivers/regulator/tps65217-regulator.c @@ -0,0 +1,459 @@ +/* + * 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/delay.h> +#include <linux/slab.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(_name, _fun, _n, _emsk, _vreg, _vmsk) \ + { \ + .name = _name, \ + .tps_range = _fun, \ + .table_len = _n, \ + .enable_mask = _emsk, \ + .set_vout_reg = _vreg, \ + .set_vout_mask = _vmsk, \ + } + +static unsigned int tps65217_vsel_to_uv_range0(unsigned int vsel) +{ + unsigned int uV = 0; + + if (vsel <= 24) + uV = ((vsel * 25000) + 900000); + else if (vsel > 24 && vsel <= 52) + uV = (((vsel - 24) * 50000) + 1500000); + else if (vsel > 52 && vsel <= 56) + uV = (((vsel - 52) * 100000) + 2900000); + else + uV = 3300000; + + return uV; +} + +static unsigned int tps65217_vsel_to_uv_range1(unsigned int vsel) +{ + unsigned int uV = 0; + + if (vsel <= 2) + uV = ((vsel * 100000) + 1000000); + else if (vsel > 2 && vsel <= 6) + uV = (((vsel - 2) * 50000) + 1200000); + else if (vsel > 6 && vsel <= 9) + uV = (((vsel - 6) * 100000) + 1400000); + else if (vsel == 10) + uV = 2500000; + else if (vsel == 11) + uV = 2750000; + else if (vsel == 12) + uV = 2800000; + else if (vsel == 13) + uV = 3000000; + else if (vsel == 14) + uV = 3100000; + else + uV = 3300000; + + return uV; +} + +static unsigned int tps65217_vsel_to_uv_range2(unsigned int vsel) +{ + unsigned int uV = 0; + + if (vsel <= 8) + uV = ((vsel * 50000) + 1500000); + else if (vsel > 9 && vsel <= 13) + uV = (((vsel - 8) * 100000) + 1900000); + else if (vsel > 13) + uV = (((vsel - 13) * 50000) + 2400000); + + return uV; +} + +static struct tps_info tps65217_pmic_regs[] = { + TPS65217_INFO("DCDC1", tps65217_vsel_to_uv_range0, 64, + TPS65217_ENABLE_DC1_EN, TPS65217_REG_DEFDCDC1, + TPS65217_DEFDCDCX_DCDC_MASK), + TPS65217_INFO("DCDC2", tps65217_vsel_to_uv_range0, 64, + TPS65217_ENABLE_DC2_EN, TPS65217_REG_DEFDCDC2, + TPS65217_DEFDCDCX_DCDC_MASK), + TPS65217_INFO("DCDC3", tps65217_vsel_to_uv_range0, 64, + TPS65217_ENABLE_DC3_EN, TPS65217_REG_DEFDCDC3, + TPS65217_DEFDCDCX_DCDC_MASK), + TPS65217_INFO("LDO1", tps65217_vsel_to_uv_range1, 16, + TPS65217_ENABLE_LDO1_EN, TPS65217_REG_DEFLDO1, + TPS65217_DEFLDO1_LDO1_MASK), + TPS65217_INFO("LDO2", tps65217_vsel_to_uv_range0, 64, + TPS65217_ENABLE_LDO2_EN, TPS65217_REG_DEFLDO2, + TPS65217_DEFLDO2_LDO2_MASK), + TPS65217_INFO("LDO3", tps65217_vsel_to_uv_range2, 32, + TPS65217_ENABLE_LS1_EN | TPS65217_DEFLDO3_LDO3_EN, + TPS65217_REG_DEFLS1, TPS65217_DEFLDO3_LDO3_MASK), + TPS65217_INFO("LDO4", tps65217_vsel_to_uv_range2, 32, + TPS65217_ENABLE_LS2_EN | TPS65217_DEFLDO4_LDO4_EN, + TPS65217_REG_DEFLS2, TPS65217_DEFLDO4_LDO4_MASK), +}; + +static int tps65217_pmic_set_bits(struct tps65217 *tps, unsigned int reg, + unsigned int mask, unsigned int val, unsigned int level) +{ + int ret; + unsigned int data; + + ret = tps65217_reg_read(tps, reg, &data); + if (ret) { + dev_err(tps->dev, "Read from reg 0x%x failed\n", reg); + return ret; + } + + data &= ~mask; + data |= val; + + ret = tps65217_reg_write(tps, reg, data, level); + if (ret) + dev_err(tps->dev, "Write for reg 0x%x failed\n", reg); + + return ret; +} + +static int tps65217_pmic_clear_bits(struct tps65217 *tps, unsigned int reg, + unsigned int mask, unsigned int level) +{ + int ret; + unsigned int data; + + ret = tps65217_reg_read(tps, reg, &data); + if (ret) { + dev_err(tps->dev, "Read from reg 0x%x failed\n", reg); + return ret; + } + + data &= ~mask; + ret = tps65217_reg_write(tps, reg, data, level); + if (ret) + dev_err(tps->dev, "Write for reg 0x%x failed\n", reg); + + return ret; +} + +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_pmic_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_pmic_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_pmic_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_pmic_clear_bits(tps, TPS65217_REG_ENABLE, + tps->info[ldo]->enable_mask, TPS65217_PROTECT_L1); +} + +static int tps65217_pmic_dcdc_get_voltage(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, tps->info[dcdc]->set_vout_reg, &data); + if (ret) + return ret; + + data &= tps->info[dcdc]->set_vout_mask; + return tps->info[dcdc]->tps_range(data); +} + +static int tps65217_pmic_dcdc_set_voltage(struct regulator_dev *dev, + unsigned selector) +{ + int ret; + struct tps65217 *tps = rdev_get_drvdata(dev); + 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; + + /* Set the voltage based on vsel value and write protect level is 2 */ + ret = tps65217_pmic_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_pmic_set_bits(tps, TPS65217_REG_DEFSLEW, + TPS65217_DEFSLEW_GO, TPS65217_DEFSLEW_GO, + TPS65217_PROTECT_L2); +} + +static int tps65217_pmic_ldo_get_voltage(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, tps->info[ldo]->set_vout_reg, &data); + if (ret) + return ret; + + data &= tps->info[ldo]->set_vout_mask; + return tps->info[ldo]->tps_range(data); +} + +static int tps65217_pmic_ldo_set_voltage(struct regulator_dev *dev, + unsigned selector) +{ + struct tps65217 *tps = rdev_get_drvdata(dev); + 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; + + /* Set the voltage based on vsel value and write protect level is 2 */ + return tps65217_pmic_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]->tps_range(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; + + return tps->info[ldo]->tps_range(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 = tps65217_pmic_dcdc_get_voltage, + .set_voltage_sel = tps65217_pmic_dcdc_set_voltage, + .list_voltage = tps65217_pmic_dcdc_list_voltage, +}; + +/* Operations permitted on LDOx */ +static struct regulator_ops tps65217_pmic_ldo_ops = { + .is_enabled = tps65217_pmic_ldo_is_enabled, + .enable = tps65217_pmic_ldo_enable, + .disable = tps65217_pmic_ldo_disable, + .get_voltage = tps65217_pmic_ldo_get_voltage, + .set_voltage_sel = 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_ldo_ops, 16), + TPS65217_REGULATOR("LDO2", TPS65217_LDO_2, + tps65217_pmic_ldo_ops, 64), + TPS65217_REGULATOR("LDO3", TPS65217_LDO_3, + tps65217_pmic_ldo_ops, 32), + TPS65217_REGULATOR("LDO4", TPS65217_LDO_4, + tps65217_pmic_ldo_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
