From patchwork Tue Dec 15 12:54:15 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Feng X-Patchwork-Id: 58438 Delivered-To: patch@linaro.org Received: by 10.112.89.199 with SMTP id bq7csp16422lbb; Tue, 15 Dec 2015 04:56:12 -0800 (PST) X-Received: by 10.66.159.226 with SMTP id xf2mr54060711pab.23.1450184172771; Tue, 15 Dec 2015 04:56:12 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id r20si1841714pfa.51.2015.12.15.04.56.12; Tue, 15 Dec 2015 04:56:12 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754023AbbLOM4J (ORCPT + 28 others); Tue, 15 Dec 2015 07:56:09 -0500 Received: from szxga03-in.huawei.com ([119.145.14.66]:22918 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751112AbbLOM4I (ORCPT ); Tue, 15 Dec 2015 07:56:08 -0500 Received: from 172.24.1.49 (EHLO szxeml433-hub.china.huawei.com) ([172.24.1.49]) by szxrg03-dlp.huawei.com (MOS 4.4.3-GA FastPath queued) with ESMTP id BSU56724; Tue, 15 Dec 2015 20:54:35 +0800 (CST) Received: from vm163-62.huawei.com (10.184.163.62) by szxeml433-hub.china.huawei.com (10.82.67.210) with Microsoft SMTP Server id 14.3.235.1; Tue, 15 Dec 2015 20:54:25 +0800 From: Chen Feng To: , , , , , , , , , , , , , , , , , , , CC: , , , Subject: [PATCH v3 4/5] regulator: add regulator driver of hi655x PMIC Date: Tue, 15 Dec 2015 20:54:15 +0800 Message-ID: <1450184056-79851-5-git-send-email-puck.chen@hisilicon.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1450184056-79851-1-git-send-email-puck.chen@hisilicon.com> References: <1450184056-79851-1-git-send-email-puck.chen@hisilicon.com> MIME-Version: 1.0 X-Originating-IP: [10.184.163.62] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020206.56700D8B.02BD, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 9071356cb52083978874dc5027b8a9d8 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add driver support for HiSilicon Hi655x voltage regulators. Signed-off-by: Chen Feng Signed-off-by: Fei Wang Tested-by: Xinwei Kong --- drivers/regulator/Kconfig | 8 + drivers/regulator/Makefile | 1 + drivers/regulator/hi655x-regulator.c | 246 +++++++++++++++++++++++++++++ include/linux/regulator/hi655x-regulator.h | 41 +++++ 4 files changed, 296 insertions(+) create mode 100644 drivers/regulator/hi655x-regulator.c create mode 100644 include/linux/regulator/hi655x-regulator.h -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 8df0b0e..c6ecfd7 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -261,6 +261,14 @@ config REGULATOR_HI6421 21 general purpose LDOs, 3 dedicated LDOs, and 5 BUCKs. All of them come with support to either ECO (idle) or sleep mode. +config REGULATOR_HI655X + tristate "Hisilicon HI655X PMIC regulators support" + depends on ARCH_HISI + depends on MFD_HI655X_PMIC && OF + help + This driver provides support for the voltage regulators of the + Hisilicon Hi655x PMIC device. + config REGULATOR_ISL9305 tristate "Intersil ISL9305 regulator" depends on I2C diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 0f81749..8e4db96 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -34,6 +34,7 @@ obj-$(CONFIG_REGULATOR_DB8500_PRCMU) += db8500-prcmu.o obj-$(CONFIG_REGULATOR_FAN53555) += fan53555.o obj-$(CONFIG_REGULATOR_GPIO) += gpio-regulator.o obj-$(CONFIG_REGULATOR_HI6421) += hi6421-regulator.o +obj-$(CONFIG_REGULATOR_HI655X) += hi655x-regulator.o obj-$(CONFIG_REGULATOR_ISL6271A) += isl6271a-regulator.o obj-$(CONFIG_REGULATOR_ISL9305) += isl9305.o obj-$(CONFIG_REGULATOR_LP3971) += lp3971.o diff --git a/drivers/regulator/hi655x-regulator.c b/drivers/regulator/hi655x-regulator.c new file mode 100644 index 0000000..e222ee7 --- /dev/null +++ b/drivers/regulator/hi655x-regulator.c @@ -0,0 +1,246 @@ +/* + * Device driver for regulators in hi655x IC + * + * Copyright (c) 2015 Hisilicon. + * + * Chen Feng + * Fei Wang + * + * 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. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static int hi655x_is_enabled(struct regulator_dev *rdev) +{ + unsigned int value = 0; + + struct hi655x_regulator *regulator = rdev_get_drvdata(rdev); + struct hi655x_regulator_ctrl_regs *ctrl_regs = ®ulator->ctrl_regs; + + regmap_read(rdev->regmap, ctrl_regs->status_reg, &value); + return (value & BIT(regulator->ctrl_mask)); +} + +static int hi655x_disable(struct regulator_dev *rdev) +{ + int ret = 0; + + struct hi655x_regulator *regulator = rdev_get_drvdata(rdev); + struct hi655x_regulator_ctrl_regs *ctrl_regs = ®ulator->ctrl_regs; + + ret = regmap_write(rdev->regmap, ctrl_regs->disable_reg, + BIT(regulator->ctrl_mask)); + return ret; +} + +static int hi655x_get_voltage(struct regulator_dev *rdev) +{ + unsigned int value = 0; + + struct hi655x_regulator *regulator = rdev_get_drvdata(rdev); + + regmap_read(rdev->regmap, regulator->vset_reg, &value); + value &= regulator->vset_mask; + + return regulator->rdesc.volt_table[value]; +} + +static int hi655x_set_voltage(struct regulator_dev *rdev, + int min_uV, int max_uV, unsigned *selector) +{ + int i = 0; + int vol = 0; + + struct hi655x_regulator *regulator = rdev_get_drvdata(rdev); + + /** + * search the matched vol and get its index + */ + for (i = 0; i < regulator->rdesc.n_voltages; i++) { + vol = regulator->rdesc.volt_table[i]; + if ((vol >= min_uV) && (vol <= max_uV)) + break; + } + + if (i == regulator->rdesc.n_voltages) + return -EINVAL; + + regmap_update_bits(rdev->regmap, regulator->vset_reg, + regulator->vset_mask, i); + + *selector = i; + + return 0; +} + +static struct regulator_ops hi655x_regulator_ops = { + .enable = regulator_enable_regmap, + .disable = hi655x_disable, + .is_enabled = hi655x_is_enabled, + .list_voltage = regulator_list_voltage_table, + .get_voltage = hi655x_get_voltage, + .set_voltage = hi655x_set_voltage, +}; + +static const struct of_device_id of_hi655x_regulator_match_tbl[] = { + { + .compatible = "hisilicon,hi655x-regulator-pmic", + }, +}; +MODULE_DEVICE_TABLE(of, of_hi655x_regulator_match_tbl); + +/** + * get the hi655x specific data from dt node. + */ +static int of_get_hi655x_ctr(struct hi655x_regulator *regulator, + struct device *dev, struct device_node *np) +{ + int ret; + u32 *vset_table; + u32 vset_reg; + u32 ctrl_mask; + u32 vset_mask; + u32 vol_numb; + struct hi655x_regulator_ctrl_regs ctrl_reg; + struct hi655x_regulator_ctrl_regs *t_ctrl; + + ret = of_property_read_u32_array(np, "regulator-ctrl-regs", + (u32 *)&ctrl_reg, 0x3); + if (!ret) { + t_ctrl = ®ulator->ctrl_regs; + t_ctrl->enable_reg = HI655X_BUS_ADDR(ctrl_reg.enable_reg); + t_ctrl->disable_reg = HI655X_BUS_ADDR(ctrl_reg.disable_reg); + t_ctrl->status_reg = HI655X_BUS_ADDR(ctrl_reg.status_reg); + } else + goto error; + + ret = of_property_read_u32(np, "regulator-ctrl-mask", &ctrl_mask); + if (!ret) + regulator->ctrl_mask = ctrl_mask; + else + goto error; + + regulator->rdesc.enable_reg = t_ctrl->enable_reg; + regulator->rdesc.enable_val = ctrl_mask; + regulator->rdesc.enable_mask = ctrl_mask; + + ret = of_property_read_u32(np, "regulator-vset-regs", &vset_reg); + if (!ret) + regulator->vset_reg = HI655X_BUS_ADDR(vset_reg); + else + goto error; + + ret = of_property_read_u32(np, "regulator-vset-mask", &vset_mask); + if (!ret) + regulator->vset_mask = vset_mask; + else + goto error; + + ret = of_property_read_u32(np, "regulator-n-vol", &vol_numb); + if (!ret) + regulator->rdesc.n_voltages = vol_numb; + else + goto error; + + vset_table = devm_kzalloc(dev, vol_numb * sizeof(int), GFP_KERNEL); + if (!vset_table) + return -ENOMEM; + + ret = of_property_read_u32_array(np, "regulator-vset-table", + vset_table, + vol_numb); + + if (!ret) + regulator->rdesc.volt_table = vset_table; + + return 0; +error: + dev_err(dev, "get from dts node error!\n"); + return -ENODEV; +} + +static int hi655x_regulator_probe(struct platform_device *pdev) +{ + int ret; + struct hi655x_regulator *regulator; + struct hi655x_pmic *pmic; + struct regulator_init_data *init_data; + struct regulator_config config = { }; + struct device_node *np = pdev->dev.of_node; + struct device *dev = &pdev->dev; + + pmic = dev_get_drvdata(pdev->dev.parent); + if (!pmic) { + dev_err(dev, "no pmic in the regulator parent node\n"); + return -ENODEV; + } + + regulator = devm_kzalloc(dev, sizeof(*regulator), GFP_KERNEL); + if (!regulator) + return -ENOMEM; + + regulator->rdesc.type = REGULATOR_VOLTAGE; + regulator->rdesc.owner = THIS_MODULE; + regulator->rdesc.ops = &hi655x_regulator_ops; + init_data = of_get_regulator_init_data(dev, dev->of_node, + ®ulator->rdesc); + if (!init_data) + return -EINVAL; + + config.dev = &pdev->dev; + config.init_data = init_data; + config.driver_data = regulator; + config.regmap = pmic->regmap; + config.of_node = pdev->dev.of_node; + regulator->rdesc.name = init_data->constraints.name; + + ret = of_get_hi655x_ctr(regulator, dev, np); + if (ret) { + dev_err(dev, "get param from dts error!\n"); + return ret; + } + + regulator->regdev = devm_regulator_register(dev, + ®ulator->rdesc, + &config); + if (IS_ERR(regulator->regdev)) + return PTR_ERR(regulator->regdev); + + platform_set_drvdata(pdev, regulator); + + return 0; +} + +static struct platform_driver hi655x_regulator_driver = { + .driver = { + .name = "hi655x_regulator", + .of_match_table = of_hi655x_regulator_match_tbl, + }, + .probe = hi655x_regulator_probe, +}; +module_platform_driver(hi655x_regulator_driver); + +MODULE_AUTHOR("Chen Feng "); +MODULE_DESCRIPTION("Hisi hi655x PMIC driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/regulator/hi655x-regulator.h b/include/linux/regulator/hi655x-regulator.h new file mode 100644 index 0000000..8c76fc5 --- /dev/null +++ b/include/linux/regulator/hi655x-regulator.h @@ -0,0 +1,41 @@ +/* + * Head file for hi655x regulator + * + * Copyright (c) 2015 Hisilicon. + * + * Chen Feng + * Fei Wang + * + * 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. + */ +#ifndef __HISI_HI655X_REGULATOR_H__ +#define __HISI_HI655X_REGULATOR_H__ + +struct hi655x_regulator_ctrl_regs { + u32 enable_reg; + u32 disable_reg; + u32 status_reg; +}; + +struct hi655x_regulator_ctrl_data { + int shift; + unsigned int val; +}; + +struct hi655x_regulator_vset_data { + int shift; + unsigned int mask; +}; + +struct hi655x_regulator { + struct hi655x_regulator_ctrl_regs ctrl_regs; + u32 vset_reg; + u32 ctrl_mask; + u32 vset_mask; + struct regulator_desc rdesc; + struct regulator_dev *regdev; +}; + +#endif