This driver supports the 3 DCDC and 7 LDO regulators available on Ricoh RN5T618 PMIC. Signed-off-by: Beniamino Galvani <b.galvani@xxxxxxxxx> --- drivers/regulator/Kconfig | 6 ++ drivers/regulator/Makefile | 1 + drivers/regulator/rn5t618-regulator.c | 143 +++++++++++++++++++++++++++++++++ include/linux/mfd/rn5t618.h | 14 ++++ 4 files changed, 164 insertions(+) create mode 100644 drivers/regulator/rn5t618-regulator.c diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 2dc8289..9d14e62 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -459,6 +459,12 @@ config REGULATOR_RC5T583 through regulator interface. The device supports multiple DCDC/LDO outputs which can be controlled by i2c communication. +config REGULATOR_RN5T618 + tristate "Ricoh RN5T618 voltage regulators" + depends on MFD_RN5T618 + help + Say y here to support the regulators found on Ricoh RN5T618 PMIC. + config REGULATOR_S2MPA01 tristate "Samsung S2MPA01 voltage regulator" depends on MFD_SEC_CORE diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index aa4a6aa..f7c4473 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -62,6 +62,7 @@ obj-$(CONFIG_REGULATOR_PBIAS) += pbias-regulator.o obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o obj-$(CONFIG_REGULATOR_RC5T583) += rc5t583-regulator.o +obj-$(CONFIG_REGULATOR_RN5T618) += rn5t618-regulator.o obj-$(CONFIG_REGULATOR_S2MPA01) += s2mpa01.o obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o diff --git a/drivers/regulator/rn5t618-regulator.c b/drivers/regulator/rn5t618-regulator.c new file mode 100644 index 0000000..e58d79a --- /dev/null +++ b/drivers/regulator/rn5t618-regulator.c @@ -0,0 +1,143 @@ +/* + * Regulator driver for Ricoh RN5T618 PMIC + * + * Copyright (C) 2014 Beniamino Galvani <b.galvani@xxxxxxxxx> + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/mfd/rn5t618.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/of_regulator.h> + +static struct regulator_ops rn5t618_reg_ops = { + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .list_voltage = regulator_list_voltage_linear, +}; + +#define REG(rid, ereg, emask, vreg, vmask, min, max, step) \ + [RN5T618_##rid] = { \ + .name = #rid, \ + .id = RN5T618_##rid, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .ops = &rn5t618_reg_ops, \ + .n_voltages = ((max) - (min)) / (step) + 1, \ + .min_uV = (min), \ + .uV_step = (step), \ + .enable_reg = RN5T618_##ereg, \ + .enable_mask = (emask), \ + .vsel_reg = RN5T618_##vreg, \ + .vsel_mask = (vmask), \ + } + +static struct regulator_desc rn5t618_regulators[] = { + /* DCDC */ + REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500), + REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500), + REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500), + /* LDO */ + REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000), + REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000), + REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 600000, 3500000, 25000), + REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000), + REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 900000, 3500000, 25000), + /* LDO RTC */ + REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1700000, 3500000, 25000), + REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000), +}; + +static struct of_regulator_match rn5t618_matches[] = { + [RN5T618_DCDC1] = { .name = "DCDC1" }, + [RN5T618_DCDC2] = { .name = "DCDC2" }, + [RN5T618_DCDC3] = { .name = "DCDC3" }, + [RN5T618_LDO1] = { .name = "LDO1" }, + [RN5T618_LDO2] = { .name = "LDO2" }, + [RN5T618_LDO3] = { .name = "LDO3" }, + [RN5T618_LDO4] = { .name = "LDO4" }, + [RN5T618_LDO5] = { .name = "LDO5" }, + [RN5T618_LDORTC1] = { .name = "LDORTC1" }, + [RN5T618_LDORTC2] = { .name = "LDORTC2" }, +}; + +static int rn5t618_regulator_parse_dt(struct platform_device *pdev) +{ + struct device_node *np, *regulators; + int ret; + + np = of_node_get(pdev->dev.parent->of_node); + if (!np) + return 0; + + regulators = of_get_child_by_name(np, "regulators"); + if (!regulators) { + dev_err(&pdev->dev, "regulators node not found\n"); + return -EINVAL; + } + + ret = of_regulator_match(&pdev->dev, regulators, rn5t618_matches, + ARRAY_SIZE(rn5t618_matches)); + of_node_put(regulators); + if (ret < 0) { + dev_err(&pdev->dev, "error parsing regulator init data: %d\n", + ret); + } + + return 0; +} + +static int rn5t618_regulator_probe(struct platform_device *pdev) +{ + struct rn5t618 *rn5t618 = dev_get_drvdata(pdev->dev.parent); + struct regulator_config config = { }; + struct regulator_dev *rdev; + int ret, i; + + ret = rn5t618_regulator_parse_dt(pdev); + if (ret) + return ret; + + for (i = 0; i < RN5T618_REG_NUM; i++) { + config.dev = &pdev->dev; + config.init_data = rn5t618_matches[i].init_data; + config.of_node = rn5t618_matches[i].of_node; + config.regmap = rn5t618->regmap; + + rdev = devm_regulator_register(&pdev->dev, + &rn5t618_regulators[i], + &config); + if (IS_ERR(rdev)) { + dev_err(&pdev->dev, "failed to register %s regulator\n", + rn5t618_regulators[i].name); + return PTR_ERR(rdev); + } + } + + return 0; +} + +static struct platform_driver rn5t618_regulator_driver = { + .probe = rn5t618_regulator_probe, + .driver = { + .name = "rn5t618-regulator", + }, +}; + +module_platform_driver(rn5t618_regulator_driver); + +MODULE_AUTHOR("Beniamino Galvani <b.galvani@xxxxxxxxx>"); +MODULE_DESCRIPTION("RN5T618 regulator driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/rn5t618.h b/include/linux/mfd/rn5t618.h index 87686eb..e3571d1 100644 --- a/include/linux/mfd/rn5t618.h +++ b/include/linux/mfd/rn5t618.h @@ -203,6 +203,20 @@ #define RN5T618_REPCNT_REPWRON BIT(0) #define RN5T618_SLPCNT_SWPWROFF BIT(0) +enum { + RN5T618_DCDC1, + RN5T618_DCDC2, + RN5T618_DCDC3, + RN5T618_LDO1, + RN5T618_LDO2, + RN5T618_LDO3, + RN5T618_LDO4, + RN5T618_LDO5, + RN5T618_LDORTC1, + RN5T618_LDORTC2, + RN5T618_REG_NUM, +}; + struct rn5t618 { struct regmap *regmap; }; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
