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Date: Fri, 7 Feb 2014 19:28:29 +0530
From: Keerthy <a0393675@...com>
To: Keerthy <j-keerthy@...com>
CC: <rob.herring@...xeda.com>, <pawel.moll@....com>,
<mark.rutland@....com>, <swarren@...dotorg.org>,
<ijc+devicetree@...lion.org.uk>, <rob@...dley.net>,
<sameo@...ux.intel.com>, <lee.jones@...aro.org>,
<grant.likely@...aro.org>, <lgirdwood@...il.com>,
<broonie@...nel.org>, <devicetree@...r.kernel.org>,
<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-omap@...r.kernel.org>
Subject: Re: [PATCH v2 3/4] Regulators: TPS65218: Add Regulator driver for
TPS65218 PMIC
Hi Mark,
On Thursday 06 February 2014 11:20 AM, Keerthy wrote:
> This patch adds support for TPS65218 PMIC regulators.
>
> The regulators set consists of 6 DCDCs and 1 LDO. The output
> voltages are configurable and are meant to supply power to the
> main processor and other components.
If there are no further comments on this could you
please pull this?
Regards,
Keerthy
> Signed-off-by: Keerthy <j-keerthy@...com>
> ---
> drivers/regulator/Kconfig | 9 +
> drivers/regulator/Makefile | 1 +
> drivers/regulator/tps65218-regulator.c | 304 ++++++++++++++++++++++++++++++++
> 3 files changed, 314 insertions(+)
> create mode 100644 drivers/regulator/tps65218-regulator.c
>
> diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
> index 6a79328..b05da880 100644
> --- a/drivers/regulator/Kconfig
> +++ b/drivers/regulator/Kconfig
> @@ -513,6 +513,15 @@ config REGULATOR_TPS65217
> voltage regulators. It supports software based voltage control
> for different voltage domains
>
> +config REGULATOR_TPS65218
> + tristate "TI TPS65218 Power regulators"
> + depends on MFD_TPS65218
> + help
> + This driver supports TPS65218 voltage regulator chips. TPS65218
> + provides six step-down converters and one general-purpose LDO
> + voltage regulators. It supports software based voltage control
> + for different voltage domains
> +
> config REGULATOR_TPS6524X
> tristate "TI TPS6524X Power regulators"
> depends on SPI
> diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
> index 979f9dd..ba801a5 100644
> --- a/drivers/regulator/Makefile
> +++ b/drivers/regulator/Makefile
> @@ -67,6 +67,7 @@ obj-$(CONFIG_REGULATOR_TPS65023) += tps65023-regulator.o
> obj-$(CONFIG_REGULATOR_TPS6507X) += tps6507x-regulator.o
> obj-$(CONFIG_REGULATOR_TPS65090) += tps65090-regulator.o
> obj-$(CONFIG_REGULATOR_TPS65217) += tps65217-regulator.o
> +obj-$(CONFIG_REGULATOR_TPS65218) += tps65218-regulator.o
> obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o
> obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o
> obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o
> diff --git a/drivers/regulator/tps65218-regulator.c b/drivers/regulator/tps65218-regulator.c
> new file mode 100644
> index 0000000..39fb189
> --- /dev/null
> +++ b/drivers/regulator/tps65218-regulator.c
> @@ -0,0 +1,304 @@
> +/*
> + * tps65218-regulator.c
> + *
> + * Regulator driver for TPS65218 PMIC
> + *
> + * Copyright (C) 2014 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 version 2 as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
> + * kind, whether expressed or implied; without even the implied warranty
> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License version 2 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/of_device.h>
> +#include <linux/regulator/of_regulator.h>
> +#include <linux/regulator/driver.h>
> +#include <linux/regulator/machine.h>
> +#include <linux/mfd/tps65218.h>
> +
> +static unsigned int tps65218_ramp_delay = 4000;
> +
> +enum tps65218_regulators { DCDC1, DCDC2, DCDC3, DCDC4, DCDC5, DCDC6, LDO1 };
> +
> +#define TPS65218_REGULATOR(_name, _id, _ops, _n, _vr, _vm, _er, _em, _t, \
> + _lr, _nlr) \
> + { \
> + .name = _name, \
> + .id = _id, \
> + .ops = &_ops, \
> + .n_voltages = _n, \
> + .type = REGULATOR_VOLTAGE, \
> + .owner = THIS_MODULE, \
> + .vsel_reg = _vr, \
> + .vsel_mask = _vm, \
> + .enable_reg = _er, \
> + .enable_mask = _em, \
> + .volt_table = _t, \
> + .linear_ranges = _lr, \
> + .n_linear_ranges = _nlr, \
> + } \
> +
> +#define TPS65218_INFO(_id, _nm, _min, _max) \
> + { \
> + .id = _id, \
> + .name = _nm, \
> + .min_uV = _min, \
> + .max_uV = _max, \
> + }
> +
> +static const struct regulator_linear_range dcdc1_dcdc2_ranges[] = {
> + REGULATOR_LINEAR_RANGE(850000, 0x0, 0x32, 10000),
> + REGULATOR_LINEAR_RANGE(1375000, 0x33, 0x3f, 25000),
> +};
> +
> +static const struct regulator_linear_range ldo1_dcdc3_ranges[] = {
> + REGULATOR_LINEAR_RANGE(900000, 0x0, 0x1a, 25000),
> + REGULATOR_LINEAR_RANGE(1600000, 0x1b, 0x3f, 50000),
> +};
> +
> +static const struct regulator_linear_range dcdc4_ranges[] = {
> + REGULATOR_LINEAR_RANGE(1175000, 0x0, 0xf, 25000),
> + REGULATOR_LINEAR_RANGE(1550000, 0x10, 0x34, 50000),
> +};
> +
> +static struct tps_info tps65218_pmic_regs[] = {
> + TPS65218_INFO(0, "DCDC1", 850000, 167500),
> + TPS65218_INFO(1, "DCDC2", 850000, 1675000),
> + TPS65218_INFO(2, "DCDC3", 900000, 3400000),
> + TPS65218_INFO(3, "DCDC4", 1175000, 3400000),
> + TPS65218_INFO(4, "DCDC5", 1000000, 1000000),
> + TPS65218_INFO(5, "DCDC6", 1800000, 1800000),
> + TPS65218_INFO(6, "LDO1", 900000, 3400000),
> +};
> +
> +#define TPS65218_OF_MATCH(comp, label) \
> + { \
> + .compatible = comp, \
> + .data = &label, \
> + }
> +
> +static const struct of_device_id tps65218_of_match[] = {
> + TPS65218_OF_MATCH("ti,tps65218-dcdc1", tps65218_pmic_regs[DCDC1]),
> + TPS65218_OF_MATCH("ti,tps65218-dcdc2", tps65218_pmic_regs[DCDC2]),
> + TPS65218_OF_MATCH("ti,tps65218-dcdc3", tps65218_pmic_regs[DCDC3]),
> + TPS65218_OF_MATCH("ti,tps65218-dcdc4", tps65218_pmic_regs[DCDC4]),
> + TPS65218_OF_MATCH("ti,tps65218-dcdc5", tps65218_pmic_regs[DCDC5]),
> + TPS65218_OF_MATCH("ti,tps65218-dcdc6", tps65218_pmic_regs[DCDC6]),
> + TPS65218_OF_MATCH("ti,tps65218-ldo1", tps65218_pmic_regs[LDO1]),
> +};
> +MODULE_DEVICE_TABLE(of, tps65218_of_match);
> +
> +static int tps65218_pmic_set_voltage_sel(struct regulator_dev *dev,
> + unsigned selector)
> +{
> + int ret;
> + struct tps65218 *tps = rdev_get_drvdata(dev);
> + unsigned int rid = rdev_get_id(dev);
> +
> + /* Set the voltage based on vsel value and write protect level is 2 */
> + ret = tps65218_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,
> + selector, TPS65218_PROTECT_L1);
> +
> + /* Set GO bit for DCDC1/2 to initiate voltage transistion */
> + switch (rid) {
> + case TPS65218_DCDC_1:
> + case TPS65218_DCDC_2:
> + ret = tps65218_set_bits(tps, TPS65218_REG_CONTRL_SLEW_RATE,
> + TPS65218_SLEW_RATE_GO,
> + TPS65218_SLEW_RATE_GO,
> + TPS65218_PROTECT_L1);
> + break;
> + }
> +
> + return ret;
> +}
> +
> +static int tps65218_pmic_enable(struct regulator_dev *dev)
> +{
> + struct tps65218 *tps = rdev_get_drvdata(dev);
> + unsigned int rid = rdev_get_id(dev);
> +
> + if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
> + return -EINVAL;
> +
> + /* Enable the regulator and password protection is level 1 */
> + return tps65218_set_bits(tps, dev->desc->enable_reg,
> + dev->desc->enable_mask, dev->desc->enable_mask,
> + TPS65218_PROTECT_L1);
> +}
> +
> +static int tps65218_pmic_disable(struct regulator_dev *dev)
> +{
> + struct tps65218 *tps = rdev_get_drvdata(dev);
> + unsigned int rid = rdev_get_id(dev);
> +
> + if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
> + return -EINVAL;
> +
> + /* Disable the regulator and password protection is level 1 */
> + return tps65218_clear_bits(tps, dev->desc->enable_reg,
> + dev->desc->enable_mask, TPS65218_PROTECT_L1);
> +}
> +
> +static int tps65218_set_voltage_time_sel(struct regulator_dev *rdev,
> + unsigned int old_selector, unsigned int new_selector)
> +{
> + int old_uv, new_uv;
> +
> + old_uv = regulator_list_voltage_linear_range(rdev, old_selector);
> + if (old_uv < 0)
> + return old_uv;
> +
> + new_uv = regulator_list_voltage_linear_range(rdev, new_selector);
> + if (new_uv < 0)
> + return new_uv;
> +
> + return DIV_ROUND_UP(abs(old_uv - new_uv), tps65218_ramp_delay);
> +}
> +
> +/* Operations permitted on DCDC1, DCDC2 */
> +static struct regulator_ops tps65218_dcdc12_ops = {
> + .is_enabled = regulator_is_enabled_regmap,
> + .enable = tps65218_pmic_enable,
> + .disable = tps65218_pmic_disable,
> + .get_voltage_sel = regulator_get_voltage_sel_regmap,
> + .set_voltage_sel = tps65218_pmic_set_voltage_sel,
> + .list_voltage = regulator_list_voltage_linear_range,
> + .map_voltage = regulator_map_voltage_linear_range,
> + .set_voltage_time_sel = tps65218_set_voltage_time_sel,
> +};
> +
> +/* Operations permitted on DCDC3, DCDC4 and LDO1 */
> +static struct regulator_ops tps65218_ldo1_dcdc34_ops = {
> + .is_enabled = regulator_is_enabled_regmap,
> + .enable = tps65218_pmic_enable,
> + .disable = tps65218_pmic_disable,
> + .get_voltage_sel = regulator_get_voltage_sel_regmap,
> + .set_voltage_sel = tps65218_pmic_set_voltage_sel,
> + .list_voltage = regulator_list_voltage_linear_range,
> + .map_voltage = regulator_map_voltage_linear_range,
> +};
> +
> +/* Operations permitted on DCDC5, DCDC6 */
> +static struct regulator_ops tps65218_dcdc56_pmic_ops = {
> + .is_enabled = regulator_is_enabled_regmap,
> + .enable = tps65218_pmic_enable,
> + .disable = tps65218_pmic_disable,
> +};
> +
> +static const struct regulator_desc regulators[] = {
> + TPS65218_REGULATOR("DCDC1", TPS65218_DCDC_1, tps65218_dcdc12_ops, 64,
> + TPS65218_REG_CONTROL_DCDC1,
> + TPS65218_CONTROL_DCDC1_MASK,
> + TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC1_EN, NULL,
> + dcdc1_dcdc2_ranges, 2),
> + TPS65218_REGULATOR("DCDC2", TPS65218_DCDC_2, tps65218_dcdc12_ops, 64,
> + TPS65218_REG_CONTROL_DCDC2,
> + TPS65218_CONTROL_DCDC2_MASK,
> + TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC2_EN, NULL,
> + dcdc1_dcdc2_ranges, 2),
> + TPS65218_REGULATOR("DCDC3", TPS65218_DCDC_3, tps65218_ldo1_dcdc34_ops,
> + 64, TPS65218_REG_CONTROL_DCDC3,
> + TPS65218_CONTROL_DCDC3_MASK, TPS65218_REG_ENABLE1,
> + TPS65218_ENABLE1_DC3_EN, NULL,
> + ldo1_dcdc3_ranges, 2),
> + TPS65218_REGULATOR("DCDC4", TPS65218_DCDC_4, tps65218_ldo1_dcdc34_ops,
> + 53, TPS65218_REG_CONTROL_DCDC4,
> + TPS65218_CONTROL_DCDC4_MASK,
> + TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC4_EN, NULL,
> + dcdc4_ranges, 2),
> + TPS65218_REGULATOR("DCDC5", TPS65218_DCDC_5, tps65218_dcdc56_pmic_ops,
> + 1, -1, -1, TPS65218_REG_ENABLE1,
> + TPS65218_ENABLE1_DC5_EN, NULL, NULL, 0),
> + TPS65218_REGULATOR("DCDC6", TPS65218_DCDC_6, tps65218_dcdc56_pmic_ops,
> + 1, -1, -1, TPS65218_REG_ENABLE1,
> + TPS65218_ENABLE1_DC6_EN, NULL, NULL, 0),
> + TPS65218_REGULATOR("LDO1", TPS65218_LDO_1, tps65218_ldo1_dcdc34_ops, 64,
> + TPS65218_REG_CONTROL_DCDC4,
> + TPS65218_CONTROL_LDO1_MASK, TPS65218_REG_ENABLE2,
> + TPS65218_ENABLE2_LDO1_EN, NULL, ldo1_dcdc3_ranges,
> + 2),
> +};
> +
> +static int tps65218_regulator_probe(struct platform_device *pdev)
> +{
> + struct tps65218 *tps = dev_get_drvdata(pdev->dev.parent);
> + struct regulator_init_data *init_data;
> + const struct tps_info *template;
> + struct regulator_dev *rdev;
> + const struct of_device_id *match;
> + struct regulator_config config = { };
> + int id;
> +
> + match = of_match_device(tps65218_of_match, &pdev->dev);
> + if (match) {
> + template = match->data;
> + id = template->id;
> + init_data = of_get_regulator_init_data(&pdev->dev,
> + pdev->dev.of_node);
> + } else {
> + return -ENODEV;
> + }
> +
> + platform_set_drvdata(pdev, tps);
> +
> + tps->info[id] = &tps65218_pmic_regs[id];
> + config.dev = &pdev->dev;
> + config.init_data = init_data;
> + config.driver_data = tps;
> + config.regmap = tps->regmap;
> +
> + rdev = devm_regulator_register(&pdev->dev, ®ulators[id], &config);
> + if (IS_ERR(rdev)) {
> + dev_err(tps->dev, "failed to register %s regulator\n",
> + pdev->name);
> + return PTR_ERR(rdev);
> + }
> +
> + /* Save regulator */
> + tps->rdev[id] = rdev;
> +
> + return 0;
> +}
> +
> +static int tps65218_regulator_remove(struct platform_device *pdev)
> +{
> + struct tps65218 *tps = platform_get_drvdata(pdev);
> + const struct of_device_id *match;
> + const struct tps_info *template;
> +
> + match = of_match_device(tps65218_of_match, &pdev->dev);
> + template = match->data;
> + regulator_unregister(tps->rdev[template->id]);
> + platform_set_drvdata(pdev, NULL);
> +
> + return 0;
> +}
> +
> +static struct platform_driver tps65218_regulator_driver = {
> + .driver = {
> + .name = "tps65218-pmic",
> + .owner = THIS_MODULE,
> + .of_match_table = of_match_ptr(tps65218_of_match),
> + },
> + .probe = tps65218_regulator_probe,
> + .remove = tps65218_regulator_remove,
> +};
> +
> +module_platform_driver(tps65218_regulator_driver);
> +
> +MODULE_AUTHOR("J Keerthy <j-keerthy@...com>");
> +MODULE_DESCRIPTION("TPS65218 voltage regulator driver");
> +MODULE_ALIAS("platform:tps65218-pmic");
> +MODULE_LICENSE("GPL v2");
--
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