[v4,1/2] regulator: act8945a: add regulator driver for ACT8945A

Message ID	1453863463-30515-2-git-send-email-wenyou.yang@atmel.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org> From: Wenyou Yang <wenyou.yang@atmel.com> To: Liam Girdwood <lgirdwood@gmail.com>, Mark Brown <broonie@kernel.org>, "Rob Herring" <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>, Ian Campbell <ijc+devicetree@hellion.org.uk>, Kumar Gala <galak@codeaurora.org> Subject: [PATCH v4 1/2] regulator: act8945a: add regulator driver for ACT8945A Date: Wed, 27 Jan 2016 10:57:42 +0800 Message-ID: <1453863463-30515-2-git-send-email-wenyou.yang@atmel.com> In-Reply-To: <1453863463-30515-1-git-send-email-wenyou.yang@atmel.com> References: <1453863463-30515-1-git-send-email-wenyou.yang@atmel.com> MIME-Version: 1.0 Precedence: list Cc: devicetree@vger.kernel.org, Krzysztof Kozlowski <k.kozlowski@samsung.com>, Nicolas Ferre <nicolas.ferre@atmel.com>, linux-kernel@vger.kernel.org, Wenyou Yang <wenyou.yang@atmel.com>, Peter Korsgaard <jacmet@gmail.com>, Javier Martinez Canillas <javier@dowhile0.org>, Lee Jones <lee.jones@linaro.org>, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 8155e80..74a6354 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -78,6 +78,15 @@ config REGULATOR_ACT8865 This driver controls a active-semi act8865 voltage output regulator via I2C bus. +config REGULATOR_ACT8945A + tristate "Active-semi ACT8945A voltage regulator" + depends on MFD_ACT8945A + help + This driver controls a active-semi ACT8945A voltage regulator + via I2C bus. The ACT8945A features three step-down DC/DC converters + and four low-dropout linear regulators, along with a ActivePath + battery charger. + config REGULATOR_AD5398 tristate "Analog Devices AD5398/AD5821 regulators" depends on I2C diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 980b194..348cfd7 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -15,6 +15,7 @@ obj-$(CONFIG_REGULATOR_AAT2870) += aat2870-regulator.o obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o obj-$(CONFIG_REGULATOR_AB8500) += ab8500-ext.o ab8500.o obj-$(CONFIG_REGULATOR_ACT8865) += act8865-regulator.o +obj-$(CONFIG_REGULATOR_ACT8945A) += act8945a-regulator.o obj-$(CONFIG_REGULATOR_AD5398) += ad5398.o obj-$(CONFIG_REGULATOR_ANATOP) += anatop-regulator.o obj-$(CONFIG_REGULATOR_ARIZONA) += arizona-micsupp.o arizona-ldo1.o diff --git a/drivers/regulator/act8945a-regulator.c b/drivers/regulator/act8945a-regulator.c new file mode 100644 index 0000000..990f0b7 --- /dev/null +++ b/drivers/regulator/act8945a-regulator.c @@ -0,0 +1,172 @@ +/* + * Voltage regulation driver for active-semi ACT8945A PMIC + * + * Copyright (C) 2015 Atmel Corporation + * + * Author: Wenyou Yang <wenyou.yang@atmel.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; either version 2 of the + * License, or (at your option) any later version. + * + */ + +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> + +/** + * ACT8945A Global Register Map. + */ +#define ACT8945A_SYS_MODE 0x00 +#define ACT8945A_SYS_CTRL 0x01 +#define ACT8945A_DCDC1_VSET1 0x20 +#define ACT8945A_DCDC1_VSET2 0x21 +#define ACT8945A_DCDC1_CTRL 0x22 +#define ACT8945A_DCDC2_VSET1 0x30 +#define ACT8945A_DCDC2_VSET2 0x31 +#define ACT8945A_DCDC2_CTRL 0x32 +#define ACT8945A_DCDC3_VSET1 0x40 +#define ACT8945A_DCDC3_VSET2 0x41 +#define ACT8945A_DCDC3_CTRL 0x42 +#define ACT8945A_LDO1_VSET 0x50 +#define ACT8945A_LDO1_CTRL 0x51 +#define ACT8945A_LDO2_VSET 0x54 +#define ACT8945A_LDO2_CTRL 0x55 +#define ACT8945A_LDO3_VSET 0x60 +#define ACT8945A_LDO3_CTRL 0x61 +#define ACT8945A_LDO4_VSET 0x64 +#define ACT8945A_LDO4_CTRL 0x65 + +/** + * Field Definitions. + */ +#define ACT8945A_ENA 0x80 /* ON - [7] */ +#define ACT8945A_VSEL_MASK 0x3F /* VSET - [5:0] */ + +/** + * ACT8945A Voltage Number + */ +#define ACT8945A_VOLTAGE_NUM 64 + +enum { + ACT8945A_ID_DCDC1, + ACT8945A_ID_DCDC2, + ACT8945A_ID_DCDC3, + ACT8945A_ID_LDO1, + ACT8945A_ID_LDO2, + ACT8945A_ID_LDO3, + ACT8945A_ID_LDO4, + ACT8945A_REG_NUM, +}; + +static const struct regulator_linear_range act8945a_voltage_ranges[] = { + REGULATOR_LINEAR_RANGE(600000, 0, 23, 25000), + REGULATOR_LINEAR_RANGE(1200000, 24, 47, 50000), + REGULATOR_LINEAR_RANGE(2400000, 48, 63, 100000), +}; + +static struct regulator_ops act8945a_ops = { + .list_voltage = regulator_list_voltage_linear_range, + .map_voltage = regulator_map_voltage_linear_range, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, +}; + +#define ACT89xx_REG(_name, _family, _id, _vsel_reg, _supply) \ + [_family##_ID_##_id] = { \ + .name = _name, \ + .supply_name = _supply, \ + .of_match = of_match_ptr("REG_"#_id), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = _family##_ID_##_id, \ + .type = REGULATOR_VOLTAGE, \ + .ops = &act8945a_ops, \ + .n_voltages = ACT8945A_VOLTAGE_NUM, \ + .linear_ranges = act8945a_voltage_ranges, \ + .n_linear_ranges = ARRAY_SIZE(act8945a_voltage_ranges), \ + .vsel_reg = _family##_##_id##_##_vsel_reg, \ + .vsel_mask = ACT8945A_VSEL_MASK, \ + .enable_reg = _family##_##_id##_CTRL, \ + .enable_mask = ACT8945A_ENA, \ + .owner = THIS_MODULE, \ + } + +static const struct regulator_desc act8945a_regulators[] = { + ACT89xx_REG("DCDC_REG1", ACT8945A, DCDC1, VSET1, "vp1"), + ACT89xx_REG("DCDC_REG2", ACT8945A, DCDC2, VSET1, "vp2"), + ACT89xx_REG("DCDC_REG3", ACT8945A, DCDC3, VSET1, "vp3"), + ACT89xx_REG("LDO_REG1", ACT8945A, LDO1, VSET, "inl45"), + ACT89xx_REG("LDO_REG2", ACT8945A, LDO2, VSET, "inl45"), + ACT89xx_REG("LDO_REG3", ACT8945A, LDO3, VSET, "inl67"), + ACT89xx_REG("LDO_REG4", ACT8945A, LDO4, VSET, "inl67"), +}; + +static const struct regulator_desc act8945a_alt_regulators[] = { + ACT89xx_REG("DCDC_REG1", ACT8945A, DCDC1, VSET2, "vp1"), + ACT89xx_REG("DCDC_REG2", ACT8945A, DCDC2, VSET2, "vp2"), + ACT89xx_REG("DCDC_REG3", ACT8945A, DCDC3, VSET2, "vp3"), + ACT89xx_REG("LDO_REG1", ACT8945A, LDO1, VSET, "inl45"), + ACT89xx_REG("LDO_REG2", ACT8945A, LDO2, VSET, "inl45"), + ACT89xx_REG("LDO_REG3", ACT8945A, LDO3, VSET, "inl67"), + ACT89xx_REG("LDO_REG4", ACT8945A, LDO4, VSET, "inl67"), +}; + +static int act8945a_pmic_probe(struct platform_device *pdev) +{ + struct regulator_config config = { }; + const struct regulator_desc *regulators; + struct regulator_dev *rdev; + int i, num_regulators; + bool voltage_select; + + voltage_select = of_property_read_bool(pdev->dev.of_node, + "active-semi,vsel-high"); + + if (voltage_select) { + regulators = act8945a_alt_regulators; + num_regulators = ARRAY_SIZE(act8945a_alt_regulators); + } else { + regulators = act8945a_regulators; + num_regulators = ARRAY_SIZE(act8945a_regulators); + } + + for (i = 0; i < num_regulators; i++) { + config.dev = &pdev->dev; + + rdev = devm_regulator_register(&pdev->dev, &regulators[i], &config); + if (IS_ERR(rdev)) { + dev_err(&pdev->dev, + "failed to register %s regulator\n", + regulators[i].name); + return PTR_ERR(rdev); + } + } + + return 0; +} + +static const struct of_device_id act8945a_pmic_of_match[] = { + { .compatible = "active-semi,act8945a-regulator" }, + { }, +}; +MODULE_DEVICE_TABLE(of, act8945a_pmic_of_match); + +static struct platform_driver act8945a_pmic_driver = { + .driver = { + .name = "act8945a-regulator", + .of_match_table = of_match_ptr(act8945a_pmic_of_match), + }, + .probe = act8945a_pmic_probe, +}; +module_platform_driver(act8945a_pmic_driver); + +MODULE_DESCRIPTION("Active-semi ACT8945A voltage regulator driver"); +MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>"); +MODULE_LICENSE("GPL");

[v4,1/2] regulator: act8945a: add regulator driver for ACT8945A

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