From patchwork Fri Apr 17 14:23:32 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steve Twiss X-Patchwork-Id: 6234201 Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 3A67B9F1AC for ; Fri, 17 Apr 2015 14:42:49 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 094D220225 for ; Fri, 17 Apr 2015 14:42:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C355E2037F for ; Fri, 17 Apr 2015 14:42:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965541AbbDQOk7 (ORCPT ); Fri, 17 Apr 2015 10:40:59 -0400 Received: from mail1.bemta5.messagelabs.com ([195.245.231.140]:61446 "EHLO mail1.bemta5.messagelabs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934767AbbDQOkx (ORCPT ); Fri, 17 Apr 2015 10:40:53 -0400 Received: from [85.158.139.35] by server-4.bemta-5.messagelabs.com id 01/E2-29354-27B11355; Fri, 17 Apr 2015 14:40:50 +0000 X-Env-Sender: stwiss.opensource@diasemi.com X-Msg-Ref: server-13.tower-179.messagelabs.com!1429281648!36506860!1 X-Originating-IP: [82.210.246.133] X-StarScan-Received: X-StarScan-Version: 6.13.6; banners=-,-,- X-VirusChecked: Checked Received: (qmail 1695 invoked from network); 17 Apr 2015 14:40:50 -0000 Received: from mailrelay1.diasemi.com (HELO NB-EX-CASHUB01.diasemi.com) (82.210.246.133) by server-13.tower-179.messagelabs.com with AES128-SHA encrypted SMTP; 17 Apr 2015 14:40:50 -0000 Received: from mailrelay1.diasemi.com (10.1.17.243) by NB-EX-CASHUB01.diasemi.com (10.1.16.140) with Microsoft SMTP Server id 14.3.181.6; Fri, 17 Apr 2015 16:40:48 +0200 Received: from swsrvapps-01.diasemi.com (Not Verified[10.20.28.141]) by mailrelay1.diasemi.com with ESMTP Gateway id ; Fri, 17 Apr 2015 16:40:47 +0200 Received: (from stwiss@localhost) by swsrvapps-01.diasemi.com (8.14.3/8.14.3/Submit/Dlg) id t3HEeb07008381; Fri, 17 Apr 2015 15:40:37 +0100 X-Authentication-Warning: swsrvapps-01.diasemi.com: stwiss set sender to stwiss.opensource@diasemi.com using -f Message-ID: <7acb2e683450a608adf81e6b820e62b523429101.1429280614.git.stwiss.opensource@diasemi.com> In-Reply-To: References: From: S Twiss Date: Fri, 17 Apr 2015 15:23:32 +0100 Subject: [PATCH V1 2/6] regulator: da9062: DA9062 regulator driver To: LINUXKERNEL , Liam Girdwood , Mark Brown CC: Alessandro Zummo , DEVICETREE , David Dajun Chen , Dmitry Torokhov , Ian Campbell , Kumar Gala , LINUXINPUT , LINUXWATCHDOG , Lee Jones , Mark Rutland , Pawel Moll , RTCLINUX , Rob Herring , S Twiss , Samuel Ortiz , Support Opensource , Wim Van Sebroeck MIME-Version: 1.0 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: S Twiss Add BUCK and LDO regulator driver support for DA9062 Signed-off-by: Steve Twiss --- This patch applies against linux-next and v4.0 drivers/regulator/Kconfig | 10 + drivers/regulator/Makefile | 1 + drivers/regulator/da9062-regulator.c | 968 +++++++++++++++++++++++++++++++++++ 3 files changed, 979 insertions(+) create mode 100644 drivers/regulator/da9062-regulator.c diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index a6f116a..1fd6dc3 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -178,6 +178,16 @@ config REGULATOR_DA9055 This driver can also be built as a module. If so, the module will be called da9055-regulator. +config REGULATOR_DA9062 + tristate "Dialog Semiconductor DA9062 regulators" + depends on MFD_DA9062 + help + Say y here to support the BUCKs and LDOs regulators found on + DA9062 PMICs. + + This driver can also be built as a module. If so, the module + will be called da9062-regulator. + config REGULATOR_DA9063 tristate "Dialog Semiconductor DA9063 regulators" depends on MFD_DA9063 diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 2c4da15..12ecb65 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -25,6 +25,7 @@ obj-$(CONFIG_REGULATOR_BCM590XX) += bcm590xx-regulator.o obj-$(CONFIG_REGULATOR_DA903X) += da903x.o obj-$(CONFIG_REGULATOR_DA9052) += da9052-regulator.o obj-$(CONFIG_REGULATOR_DA9055) += da9055-regulator.o +obj-$(CONFIG_REGULATOR_DA9062) += da9062-regulator.o obj-$(CONFIG_REGULATOR_DA9063) += da9063-regulator.o obj-$(CONFIG_REGULATOR_DA9210) += da9210-regulator.o obj-$(CONFIG_REGULATOR_DA9211) += da9211-regulator.o diff --git a/drivers/regulator/da9062-regulator.c b/drivers/regulator/da9062-regulator.c new file mode 100644 index 0000000..503e395 --- /dev/null +++ b/drivers/regulator/da9062-regulator.c @@ -0,0 +1,968 @@ +/* + * da9062-regulator.c - REGULATOR device driver for DA9062 + * Copyright (C) 2015 Dialog Semiconductor Ltd. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Regulator IDs */ +enum { + DA9062_ID_BUCK1, + DA9062_ID_BUCK2, + DA9062_ID_BUCK3, + DA9062_ID_BUCK4, + DA9062_ID_LDO1, + DA9062_ID_LDO2, + DA9062_ID_LDO3, + DA9062_ID_LDO4, +}; + +/* Regulator capabilities and registers description */ +struct da9062_regulator_info { + struct regulator_desc desc; + /* Current limiting */ + unsigned int n_current_limits; + const int *current_limits; + /* Main register fields */ + struct reg_field mode; + struct reg_field suspend; + struct reg_field sleep; + struct reg_field suspend_sleep; + unsigned int suspend_vsel_reg; + struct reg_field ilimit; + /* Event detection bit */ + struct reg_field oc_event; +}; + +/* Single regulator settings */ +struct da9062_regulator { + struct regulator_desc desc; + struct regulator_dev *rdev; + struct da9062 *hw; + const struct da9062_regulator_info *info; + + struct regmap_field *mode; + struct regmap_field *suspend; + struct regmap_field *sleep; + struct regmap_field *suspend_sleep; + struct regmap_field *ilimit; +}; + +/* Encapsulates all information for the regulators driver */ +struct da9062_regulators { + int irq_ldo_lim; + int irq_vdd_warn; + unsigned n_regulators; + /* Array size to be defined during init. Keep at end. */ + struct da9062_regulator regulator[0]; +}; + +/* BUCK modes */ +enum { + BUCK_MODE_MANUAL, /* 0 */ + BUCK_MODE_SLEEP, /* 1 */ + BUCK_MODE_SYNC, /* 2 */ + BUCK_MODE_AUTO /* 3 */ +}; + +/* Regulator operations */ + +/* Current limits array (in uA) BUCK1 and BUCK3. + Entry indexes corresponds to register values. */ +static const int da9062_buck_a_limits[] = { + 500000, 600000, 700000, 800000, 900000, 1000000, 1100000, 1200000, + 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1900000, 2000000 +}; + +/* Current limits array (in uA) for BUCK2. + Entry indexes corresponds to register values. */ +static const int da9062_buck_b_limits[] = { + 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000, + 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000 +}; + +static int da9062_set_current_limit(struct regulator_dev *rdev, + int min_ua, int max_ua) +{ + struct da9062_regulator *regl = rdev_get_drvdata(rdev); + const struct da9062_regulator_info *rinfo = regl->info; + int n, tval; + + for (n = 0; n < rinfo->n_current_limits; n++) { + tval = rinfo->current_limits[n]; + if (tval >= min_ua && tval <= max_ua) + return regmap_field_write(regl->ilimit, n); + } + + return -EINVAL; +} + +static int da9062_get_current_limit(struct regulator_dev *rdev) +{ + struct da9062_regulator *regl = rdev_get_drvdata(rdev); + const struct da9062_regulator_info *rinfo = regl->info; + unsigned int sel; + int ret; + + ret = regmap_field_read(regl->ilimit, &sel); + if (ret < 0) + return ret; + + if (sel >= rinfo->n_current_limits) + sel = rinfo->n_current_limits - 1; + + return rinfo->current_limits[sel]; +} + +static int da9062_buck_set_mode(struct regulator_dev *rdev, unsigned mode) +{ + struct da9062_regulator *regl = rdev_get_drvdata(rdev); + unsigned val; + + switch (mode) { + case REGULATOR_MODE_FAST: + val = BUCK_MODE_SYNC; + break; + case REGULATOR_MODE_NORMAL: + val = BUCK_MODE_AUTO; + break; + case REGULATOR_MODE_STANDBY: + val = BUCK_MODE_SLEEP; + break; + default: + return -EINVAL; + } + + return regmap_field_write(regl->mode, val); +} + +/* + * Bucks use single mode register field for normal operation + * and suspend state. + * There are 3 modes to map to: FAST, NORMAL, and STANDBY. + */ + +static unsigned da9062_buck_get_mode(struct regulator_dev *rdev) +{ + struct da9062_regulator *regl = rdev_get_drvdata(rdev); + struct regmap_field *field; + unsigned int val, mode = 0; + int ret; + + ret = regmap_field_read(regl->mode, &val); + if (ret < 0) + return ret; + + switch (val) { + default: + case BUCK_MODE_MANUAL: + mode = REGULATOR_MODE_FAST | REGULATOR_MODE_STANDBY; + /* Sleep flag bit decides the mode */ + break; + case BUCK_MODE_SLEEP: + return REGULATOR_MODE_STANDBY; + case BUCK_MODE_SYNC: + return REGULATOR_MODE_FAST; + case BUCK_MODE_AUTO: + return REGULATOR_MODE_NORMAL; + } + + /* Detect current regulator state */ + ret = regmap_field_read(regl->suspend, &val); + if (ret < 0) + return 0; + + /* Read regulator mode from proper register, depending on state */ + if (val) + field = regl->suspend_sleep; + else + field = regl->sleep; + + ret = regmap_field_read(field, &val); + if (ret < 0) + return 0; + + if (val) + mode &= REGULATOR_MODE_STANDBY; + else + mode &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_FAST; + + return mode; +} + +/* + * LDOs use sleep flags - one for normal and one for suspend state. + * There are 2 modes to map to: NORMAL and STANDBY (sleep) for each state. + */ + +static int da9062_ldo_set_mode(struct regulator_dev *rdev, unsigned mode) +{ + struct da9062_regulator *regl = rdev_get_drvdata(rdev); + unsigned val; + + switch (mode) { + case REGULATOR_MODE_NORMAL: + val = 0; + break; + case REGULATOR_MODE_STANDBY: + val = 1; + break; + default: + return -EINVAL; + } + + return regmap_field_write(regl->sleep, val); +} + +static unsigned da9062_ldo_get_mode(struct regulator_dev *rdev) +{ + struct da9062_regulator *regl = rdev_get_drvdata(rdev); + struct regmap_field *field; + int ret, val; + + /* Detect current regulator state */ + ret = regmap_field_read(regl->suspend, &val); + if (ret < 0) + return 0; + + /* Read regulator mode from proper register, depending on state */ + if (val) + field = regl->suspend_sleep; + else + field = regl->sleep; + + ret = regmap_field_read(field, &val); + if (ret < 0) + return 0; + + if (val) + return REGULATOR_MODE_STANDBY; + else + return REGULATOR_MODE_NORMAL; +} + +static int da9062_buck_get_status(struct regulator_dev *rdev) +{ + int ret = regulator_is_enabled_regmap(rdev); + + if (ret == 0) { + ret = REGULATOR_STATUS_OFF; + } else if (ret > 0) { + ret = da9062_buck_get_mode(rdev); + if (ret > 0) + ret = regulator_mode_to_status(ret); + else if (ret == 0) + ret = -EIO; + } + + return ret; +} + +static int da9062_ldo_get_status(struct regulator_dev *rdev) +{ + int ret = regulator_is_enabled_regmap(rdev); + + if (ret == 0) { + ret = REGULATOR_STATUS_OFF; + } else if (ret > 0) { + ret = da9062_ldo_get_mode(rdev); + if (ret > 0) + ret = regulator_mode_to_status(ret); + else if (ret == 0) + ret = -EIO; + } + + return ret; +} + +static int da9062_set_suspend_voltage(struct regulator_dev *rdev, int uv) +{ + struct da9062_regulator *regl = rdev_get_drvdata(rdev); + const struct da9062_regulator_info *rinfo = regl->info; + int ret, sel; + + sel = regulator_map_voltage_linear(rdev, uv, uv); + if (sel < 0) + return sel; + + sel <<= ffs(rdev->desc->vsel_mask) - 1; + + ret = regmap_update_bits(regl->hw->regmap, rinfo->suspend_vsel_reg, + rdev->desc->vsel_mask, sel); + + return ret; +} + +static int da9062_suspend_enable(struct regulator_dev *rdev) +{ + struct da9062_regulator *regl = rdev_get_drvdata(rdev); + + return regmap_field_write(regl->suspend, 1); +} + +static int da9062_suspend_disable(struct regulator_dev *rdev) +{ + struct da9062_regulator *regl = rdev_get_drvdata(rdev); + + return regmap_field_write(regl->suspend, 0); +} + +static int da9062_buck_set_suspend_mode(struct regulator_dev *rdev, + unsigned mode) +{ + struct da9062_regulator *regl = rdev_get_drvdata(rdev); + int val; + + switch (mode) { + case REGULATOR_MODE_FAST: + val = BUCK_MODE_SYNC; + break; + case REGULATOR_MODE_NORMAL: + val = BUCK_MODE_AUTO; + break; + case REGULATOR_MODE_STANDBY: + val = BUCK_MODE_SLEEP; + break; + default: + return -EINVAL; + } + + return regmap_field_write(regl->mode, val); +} + +static int da9062_ldo_set_suspend_mode(struct regulator_dev *rdev, + unsigned mode) +{ + struct da9062_regulator *regl = rdev_get_drvdata(rdev); + unsigned val; + + switch (mode) { + case REGULATOR_MODE_NORMAL: + val = 0; + break; + case REGULATOR_MODE_STANDBY: + val = 1; + break; + default: + return -EINVAL; + } + + return regmap_field_write(regl->suspend_sleep, val); +} + +static struct regulator_ops da9062_buck_ops = { + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .list_voltage = regulator_list_voltage_linear, + .set_current_limit = da9062_set_current_limit, + .get_current_limit = da9062_get_current_limit, + .set_mode = da9062_buck_set_mode, + .get_mode = da9062_buck_get_mode, + .get_status = da9062_buck_get_status, + .set_suspend_voltage = da9062_set_suspend_voltage, + .set_suspend_enable = da9062_suspend_enable, + .set_suspend_disable = da9062_suspend_disable, + .set_suspend_mode = da9062_buck_set_suspend_mode, +}; + +static struct regulator_ops da9062_ldo_ops = { + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .list_voltage = regulator_list_voltage_linear, + .set_mode = da9062_ldo_set_mode, + .get_mode = da9062_ldo_get_mode, + .get_status = da9062_ldo_get_status, + .set_suspend_voltage = da9062_set_suspend_voltage, + .set_suspend_enable = da9062_suspend_enable, + .set_suspend_disable = da9062_suspend_disable, + .set_suspend_mode = da9062_ldo_set_suspend_mode, +}; + +/* Regulator information */ +static const struct da9062_regulator_info local_regulator_info[] = { + { + .desc.id = DA9062_ID_BUCK1, + .desc.name = "DA9062 BUCK1", + .desc.ops = &da9062_buck_ops, + .desc.min_uV = (300) * 1000, + .desc.uV_step = (10) * 1000, + .desc.n_voltages = ((1570) - (300))/(10) + 1, + .current_limits = da9062_buck_a_limits, + .n_current_limits = ARRAY_SIZE(da9062_buck_a_limits), + .desc.enable_reg = DA9062AA_BUCK1_CONT, + .desc.enable_mask = DA9062AA_BUCK1_EN_MASK, + .desc.vsel_reg = DA9062AA_VBUCK1_A, + .desc.vsel_mask = DA9062AA_VBUCK1_A_MASK, + .desc.linear_min_sel = 0, + .sleep = REG_FIELD(DA9062AA_VBUCK1_A, + __builtin_ffs((int)DA9062AA_BUCK1_SL_A_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_BUCK1_SL_A_MASK)) - 1), + .suspend_sleep = REG_FIELD(DA9062AA_VBUCK1_B, + __builtin_ffs((int)DA9062AA_BUCK1_SL_B_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_BUCK1_SL_B_MASK)) - 1), + .suspend_vsel_reg = DA9062AA_VBUCK1_B, + .mode = REG_FIELD(DA9062AA_BUCK1_CFG, + __builtin_ffs((int)DA9062AA_BUCK1_MODE_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_BUCK1_MODE_MASK)) - 1), + .suspend = REG_FIELD(DA9062AA_DVC_1, + __builtin_ffs((int)DA9062AA_VBUCK1_SEL_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_VBUCK1_SEL_MASK)) - 1), + .ilimit = REG_FIELD(DA9062AA_BUCK_ILIM_C, + __builtin_ffs((int)DA9062AA_BUCK1_ILIM_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_BUCK1_ILIM_MASK)) - 1), + }, + { + .desc.id = DA9062_ID_BUCK2, + .desc.name = "DA9062 BUCK2", + .desc.ops = &da9062_buck_ops, + .desc.min_uV = (300) * 1000, + .desc.uV_step = (10) * 1000, + .desc.n_voltages = ((1570) - (300))/(10) + 1, + .current_limits = da9062_buck_a_limits, + .n_current_limits = ARRAY_SIZE(da9062_buck_a_limits), + .desc.enable_reg = DA9062AA_BUCK2_CONT, + .desc.enable_mask = DA9062AA_BUCK2_EN_MASK, + .desc.vsel_reg = DA9062AA_VBUCK2_A, + .desc.vsel_mask = DA9062AA_VBUCK2_A_MASK, + .desc.linear_min_sel = 0, + .sleep = REG_FIELD(DA9062AA_VBUCK2_A, + __builtin_ffs((int)DA9062AA_BUCK2_SL_A_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_BUCK2_SL_A_MASK)) - 1), + .suspend_sleep = REG_FIELD(DA9062AA_VBUCK2_B, + __builtin_ffs((int)DA9062AA_BUCK2_SL_B_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_BUCK2_SL_B_MASK)) - 1), + .suspend_vsel_reg = DA9062AA_VBUCK2_B, + .mode = REG_FIELD(DA9062AA_BUCK2_CFG, + __builtin_ffs((int)DA9062AA_BUCK2_MODE_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_BUCK2_MODE_MASK)) - 1), + .suspend = REG_FIELD(DA9062AA_DVC_1, + __builtin_ffs((int)DA9062AA_VBUCK2_SEL_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_VBUCK2_SEL_MASK)) - 1), + .ilimit = REG_FIELD(DA9062AA_BUCK_ILIM_C, + __builtin_ffs((int)DA9062AA_BUCK2_ILIM_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_BUCK2_ILIM_MASK)) - 1), + }, + { + .desc.id = DA9062_ID_BUCK3, + .desc.name = "DA9062 BUCK3", + .desc.ops = &da9062_buck_ops, + .desc.min_uV = (800) * 1000, + .desc.uV_step = (20) * 1000, + .desc.n_voltages = ((3340) - (800))/(20) + 1, + .current_limits = da9062_buck_b_limits, + .n_current_limits = ARRAY_SIZE(da9062_buck_b_limits), + .desc.enable_reg = DA9062AA_BUCK3_CONT, + .desc.enable_mask = DA9062AA_BUCK3_EN_MASK, + .desc.vsel_reg = DA9062AA_VBUCK3_A, + .desc.vsel_mask = DA9062AA_VBUCK3_A_MASK, + .desc.linear_min_sel = 0, + .sleep = REG_FIELD(DA9062AA_VBUCK3_A, + __builtin_ffs((int)DA9062AA_BUCK3_SL_A_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_BUCK3_SL_A_MASK)) - 1), + .suspend_sleep = REG_FIELD(DA9062AA_VBUCK3_B, + __builtin_ffs((int)DA9062AA_BUCK3_SL_B_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_BUCK3_SL_B_MASK)) - 1), + .suspend_vsel_reg = DA9062AA_VBUCK3_B, + .mode = REG_FIELD(DA9062AA_BUCK3_CFG, + __builtin_ffs((int)DA9062AA_BUCK3_MODE_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_BUCK3_MODE_MASK)) - 1), + .suspend = REG_FIELD(DA9062AA_DVC_1, + __builtin_ffs((int)DA9062AA_VBUCK3_SEL_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_VBUCK3_SEL_MASK)) - 1), + .ilimit = REG_FIELD(DA9062AA_BUCK_ILIM_A, + __builtin_ffs((int)DA9062AA_BUCK3_ILIM_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_BUCK3_ILIM_MASK)) - 1), + }, + { + .desc.id = DA9062_ID_BUCK4, + .desc.name = "DA9062 BUCK4", + .desc.ops = &da9062_buck_ops, + .desc.min_uV = (530) * 1000, + .desc.uV_step = (10) * 1000, + .desc.n_voltages = ((1800) - (530))/(10) + 1, + .current_limits = da9062_buck_a_limits, + .n_current_limits = ARRAY_SIZE(da9062_buck_a_limits), + .desc.enable_reg = DA9062AA_BUCK4_CONT, + .desc.enable_mask = DA9062AA_BUCK4_EN_MASK, + .desc.vsel_reg = DA9062AA_VBUCK4_A, + .desc.vsel_mask = DA9062AA_VBUCK4_A_MASK, + .desc.linear_min_sel = 0, + .sleep = REG_FIELD(DA9062AA_VBUCK4_A, + __builtin_ffs((int)DA9062AA_BUCK4_SL_A_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_BUCK4_SL_A_MASK)) - 1), + .suspend_sleep = REG_FIELD(DA9062AA_VBUCK4_B, + __builtin_ffs((int)DA9062AA_BUCK4_SL_B_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_BUCK4_SL_B_MASK)) - 1), + .suspend_vsel_reg = DA9062AA_VBUCK4_B, + .mode = REG_FIELD(DA9062AA_BUCK4_CFG, + __builtin_ffs((int)DA9062AA_BUCK4_MODE_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_BUCK4_MODE_MASK)) - 1), + .suspend = REG_FIELD(DA9062AA_DVC_1, + __builtin_ffs((int)DA9062AA_VBUCK4_SEL_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_VBUCK4_SEL_MASK)) - 1), + .ilimit = REG_FIELD(DA9062AA_BUCK_ILIM_B, + __builtin_ffs((int)DA9062AA_BUCK4_ILIM_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_BUCK4_ILIM_MASK)) - 1), + }, + { + .desc.id = DA9062_ID_LDO1, + .desc.name = "DA9062 LDO1", + .desc.ops = &da9062_ldo_ops, + .desc.min_uV = (900) * 1000, + .desc.uV_step = (50) * 1000, + .desc.n_voltages = ((3600) - (900))/(50) + 1, + .desc.enable_reg = DA9062AA_LDO1_CONT, + .desc.enable_mask = DA9062AA_LDO1_EN_MASK, + .desc.vsel_reg = DA9062AA_VLDO1_A, + .desc.vsel_mask = DA9062AA_VLDO1_A_MASK, + .desc.linear_min_sel = 0, + .sleep = REG_FIELD(DA9062AA_VLDO1_A, + __builtin_ffs((int)DA9062AA_LDO1_SL_A_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_LDO1_SL_A_MASK)) - 1), + .suspend_sleep = REG_FIELD(DA9062AA_VLDO1_B, + __builtin_ffs((int)DA9062AA_LDO1_SL_B_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_LDO1_SL_B_MASK)) - 1), + .suspend_vsel_reg = DA9062AA_VLDO1_B, + .suspend = REG_FIELD(DA9062AA_DVC_1, + __builtin_ffs((int)DA9062AA_VLDO1_SEL_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_VLDO1_SEL_MASK)) - 1), + .oc_event = REG_FIELD(DA9062AA_STATUS_D, + __builtin_ffs((int)DA9062AA_LDO1_ILIM_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_LDO1_ILIM_MASK)) - 1), + }, + { + .desc.id = DA9062_ID_LDO2, + .desc.name = "DA9062 LDO2", + .desc.ops = &da9062_ldo_ops, + .desc.min_uV = (900) * 1000, + .desc.uV_step = (50) * 1000, + .desc.n_voltages = ((3600) - (600))/(50) + 1, + .desc.enable_reg = DA9062AA_LDO2_CONT, + .desc.enable_mask = DA9062AA_LDO2_EN_MASK, + .desc.vsel_reg = DA9062AA_VLDO2_A, + .desc.vsel_mask = DA9062AA_VLDO2_A_MASK, + .desc.linear_min_sel = 0, + .sleep = REG_FIELD(DA9062AA_VLDO2_A, + __builtin_ffs((int)DA9062AA_LDO2_SL_A_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_LDO2_SL_A_MASK)) - 1), + .suspend_sleep = REG_FIELD(DA9062AA_VLDO2_B, + __builtin_ffs((int)DA9062AA_LDO2_SL_B_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_LDO2_SL_B_MASK)) - 1), + .suspend_vsel_reg = DA9062AA_VLDO2_B, + .suspend = REG_FIELD(DA9062AA_DVC_1, + __builtin_ffs((int)DA9062AA_VLDO2_SEL_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_VLDO2_SEL_MASK)) - 1), + .oc_event = REG_FIELD(DA9062AA_STATUS_D, + __builtin_ffs((int)DA9062AA_LDO2_ILIM_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_LDO2_ILIM_MASK)) - 1), + }, + { + .desc.id = DA9062_ID_LDO3, + .desc.name = "DA9062 LDO3", + .desc.ops = &da9062_ldo_ops, + .desc.min_uV = (900) * 1000, + .desc.uV_step = (50) * 1000, + .desc.n_voltages = ((3600) - (900))/(50) + 1, + .desc.enable_reg = DA9062AA_LDO3_CONT, + .desc.enable_mask = DA9062AA_LDO3_EN_MASK, + .desc.vsel_reg = DA9062AA_VLDO3_A, + .desc.vsel_mask = DA9062AA_VLDO3_A_MASK, + .desc.linear_min_sel = 0, + .sleep = REG_FIELD(DA9062AA_VLDO3_A, + __builtin_ffs((int)DA9062AA_LDO3_SL_A_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_LDO3_SL_A_MASK)) - 1), + .suspend_sleep = REG_FIELD(DA9062AA_VLDO3_B, + __builtin_ffs((int)DA9062AA_LDO3_SL_B_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_LDO3_SL_B_MASK)) - 1), + .suspend_vsel_reg = DA9062AA_VLDO3_B, + .suspend = REG_FIELD(DA9062AA_DVC_1, + __builtin_ffs((int)DA9062AA_VLDO3_SEL_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_VLDO3_SEL_MASK)) - 1), + .oc_event = REG_FIELD(DA9062AA_STATUS_D, + __builtin_ffs((int)DA9062AA_LDO3_ILIM_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_LDO3_ILIM_MASK)) - 1), + }, + { + .desc.id = DA9062_ID_LDO4, + .desc.name = "DA9062 LDO4", + .desc.ops = &da9062_ldo_ops, + .desc.min_uV = (900) * 1000, + .desc.uV_step = (50) * 1000, + .desc.n_voltages = ((3600) - (900))/(50) + 1, + .desc.enable_reg = DA9062AA_LDO4_CONT, + .desc.enable_mask = DA9062AA_LDO4_EN_MASK, + .desc.vsel_reg = DA9062AA_VLDO4_A, + .desc.vsel_mask = DA9062AA_VLDO4_A_MASK, + .desc.linear_min_sel = 0, + .sleep = REG_FIELD(DA9062AA_VLDO4_A, + __builtin_ffs((int)DA9062AA_LDO4_SL_A_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_LDO4_SL_A_MASK)) - 1), + .suspend_sleep = REG_FIELD(DA9062AA_VLDO4_B, + __builtin_ffs((int)DA9062AA_LDO4_SL_B_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_LDO4_SL_B_MASK)) - 1), + .suspend_vsel_reg = DA9062AA_VLDO4_B, + .suspend = REG_FIELD(DA9062AA_DVC_1, + __builtin_ffs((int)DA9062AA_VLDO4_SEL_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_VLDO4_SEL_MASK)) - 1), + .oc_event = REG_FIELD(DA9062AA_STATUS_D, + __builtin_ffs((int)DA9062AA_LDO4_ILIM_MASK) - 1, + sizeof(unsigned int) * 8 - + __builtin_clz((DA9062AA_LDO4_ILIM_MASK)) - 1), + }, +}; + +/* Regulator interrupt handlers */ +static irqreturn_t da9062_ldo_lim_event(int irq, void *data) +{ + struct da9062_regulators *regulators = data; + struct da9062 *hw = regulators->regulator[0].hw; + struct da9062_regulator *regl; + int bits, i, ret; + + ret = regmap_read(hw->regmap, DA9062AA_STATUS_D, &bits); + if (ret < 0) + return IRQ_NONE; + + for (i = regulators->n_regulators - 1; i >= 0; i--) { + regl = ®ulators->regulator[i]; + if (regl->info->oc_event.reg != DA9062AA_STATUS_D) + continue; + + if (BIT(regl->info->oc_event.lsb) & bits) + regulator_notifier_call_chain(regl->rdev, + REGULATOR_EVENT_OVER_CURRENT, NULL); + } + + return IRQ_HANDLED; +} + +static irqreturn_t da9062_vdd_warn_event(int irq, void *data) +{ + return IRQ_HANDLED; +} + +/* Regulators platform data */ +struct da9062_regulator_data { + int id; + struct regulator_init_data *initdata; +}; + +struct da9062_regulators_pdata { + unsigned n_regulators; + struct da9062_regulator_data *regulator_data; +}; + +/* + * Probing and Initialisation functions + */ +static const struct regulator_init_data *da9062_get_regulator_initdata( + const struct da9062_regulators_pdata *pdata, int id) +{ + int i; + + for (i = 0; i < pdata->n_regulators; i++) { + if (id == pdata->regulator_data[i].id) + return pdata->regulator_data[i].initdata; + } + + return NULL; +} + +#ifdef CONFIG_OF +static struct of_regulator_match da9062_matches[] = { + [DA9062_ID_BUCK1] = { .name = "buck1" }, + [DA9062_ID_BUCK2] = { .name = "buck2" }, + [DA9062_ID_BUCK3] = { .name = "buck3" }, + [DA9062_ID_BUCK4] = { .name = "buck4" }, + [DA9062_ID_LDO1] = { .name = "ldo1" }, + [DA9062_ID_LDO2] = { .name = "ldo2" }, + [DA9062_ID_LDO3] = { .name = "ldo3" }, + [DA9062_ID_LDO4] = { .name = "ldo4" }, +}; + +static struct da9062_regulators_pdata *da9062_parse_regulators_dt( + struct platform_device *pdev, + struct of_regulator_match **reg_matches) +{ + struct da9062_regulators_pdata *pdata; + struct da9062_regulator_data *rdata; + struct device_node *node; + int i, n, num; + + node = of_get_child_by_name(pdev->dev.parent->of_node, "regulators"); + if (!node) { + dev_err(&pdev->dev, "Regulators device node not found\n"); + return ERR_PTR(-ENODEV); + } + + num = of_regulator_match(&pdev->dev, node, da9062_matches, + ARRAY_SIZE(da9062_matches)); + of_node_put(node); + if (num < 0) { + dev_err(&pdev->dev, "Failed to match regulators\n"); + return ERR_PTR(-EINVAL); + } + + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return ERR_PTR(-ENOMEM); + + pdata->regulator_data = devm_kzalloc(&pdev->dev, + num * sizeof(*pdata->regulator_data), + GFP_KERNEL); + if (!pdata->regulator_data) + return ERR_PTR(-ENOMEM); + pdata->n_regulators = num; + + n = 0; + for (i = 0; i < ARRAY_SIZE(da9062_matches); i++) { + if (!da9062_matches[i].init_data) + continue; + + rdata = &pdata->regulator_data[n]; + rdata->id = i; + rdata->initdata = da9062_matches[i].init_data; + + n++; + }; + + *reg_matches = da9062_matches; + return pdata; +} +#else +static struct da9062_regulators_pdata *da9062_parse_regulators_dt( + struct platform_device *pdev, + struct of_regulator_match **reg_matches) +{ + *reg_matches = NULL; + return ERR_PTR(-ENODEV); +} +#endif + +static int da9062_regulator_probe(struct platform_device *pdev) +{ + struct da9062 *chip = dev_get_drvdata(pdev->dev.parent); + struct of_regulator_match *reg_matches = NULL; + struct da9062_regulators_pdata *pdata; + struct da9062_regulators *regulators; + struct da9062_regulator *regl; + struct regulator_config config; + int id, irq, n, n_regulators, ret; + size_t size; + + pdata = da9062_parse_regulators_dt(pdev, ®_matches); + + if (IS_ERR(pdata) || pdata->n_regulators == 0) { + dev_err(&pdev->dev, + "No regulators defined for the platform\n"); + return PTR_ERR(pdata); + } + + n_regulators = ARRAY_SIZE(local_regulator_info), + + /* Allocate memory required by usable regulators */ + size = sizeof(struct da9062_regulators) + + n_regulators * sizeof(struct da9062_regulator); + regulators = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); + if (!regulators) + return -ENOMEM; + + regulators->n_regulators = n_regulators; + platform_set_drvdata(pdev, regulators); + + /* Register all regulators declared in platform information */ + n = 0; + id = 0; + while (n < regulators->n_regulators) { + /* Initialise regulator structure */ + regl = ®ulators->regulator[n]; + regl->hw = chip; + regl->info = &local_regulator_info[id]; + regl->desc = regl->info->desc; + regl->desc.type = REGULATOR_VOLTAGE; + regl->desc.owner = THIS_MODULE; + + if (regl->info->mode.reg) + regl->mode = devm_regmap_field_alloc( + &pdev->dev, + chip->regmap, + regl->info->mode); + if (regl->info->suspend.reg) + regl->suspend = devm_regmap_field_alloc( + &pdev->dev, + chip->regmap, + regl->info->suspend); + if (regl->info->sleep.reg) + regl->sleep = devm_regmap_field_alloc( + &pdev->dev, + chip->regmap, + regl->info->sleep); + if (regl->info->suspend_sleep.reg) + regl->suspend_sleep = devm_regmap_field_alloc( + &pdev->dev, + chip->regmap, + regl->info->suspend_sleep); + if (regl->info->ilimit.reg) + regl->ilimit = devm_regmap_field_alloc( + &pdev->dev, + chip->regmap, + regl->info->ilimit); + + /* Register regulator */ + memset(&config, 0, sizeof(config)); + config.dev = &pdev->dev; + config.init_data = da9062_get_regulator_initdata(pdata, id); + config.driver_data = regl; + if (reg_matches) + config.of_node = reg_matches[id].of_node; + config.regmap = chip->regmap; + regl->rdev = devm_regulator_register(&pdev->dev, ®l->desc, + &config); + if (IS_ERR(regl->rdev)) { + dev_err(&pdev->dev, + "Failed to register %s regulator\n", + regl->desc.name); + return PTR_ERR(regl->rdev); + } + id++; + n++; + } + + /* LDOs overcurrent event support */ + irq = platform_get_irq_byname(pdev, "LDO_LIM"); + if (irq < 0) { + dev_err(&pdev->dev, "Failed to get IRQ.\n"); + return irq; + } + regulators->irq_ldo_lim = irq; + + ret = request_threaded_irq(irq, + NULL, da9062_ldo_lim_event, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, + "LDO_LIM", regulators); + if (ret) { + dev_warn(&pdev->dev, + "Failed to request LDO_LIM IRQ.\n"); + regulators->irq_ldo_lim = -ENXIO; + } + + /* VDD WARN event support */ + irq = platform_get_irq_byname(pdev, "VDD_WARN"); + if (irq < 0) { + dev_err(&pdev->dev, "Failed to get IRQ.\n"); + free_irq(regulators->irq_ldo_lim, regulators); + return irq; + } + regulators->irq_vdd_warn = irq; + + ret = request_threaded_irq(irq, + NULL, da9062_vdd_warn_event, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, + "VDD_WARN", regulators); + if (ret) { + dev_warn(&pdev->dev, + "Failed to request VDD_WARN IRQ.\n"); + regulators->irq_vdd_warn = -ENXIO; + } + + return 0; +} + +static int da9062_regulator_remove(struct platform_device *pdev) +{ + struct da9062_regulators *regulators = platform_get_drvdata(pdev); + + free_irq(regulators->irq_ldo_lim, regulators); + free_irq(regulators->irq_vdd_warn, regulators); + + return 0; +} + +static struct platform_driver da9062_regulator_driver = { + .driver = { + .name = "da9062-regulators", + .owner = THIS_MODULE, + }, + .probe = da9062_regulator_probe, + .remove = da9062_regulator_remove, +}; + +static int __init da9062_regulator_init(void) +{ + return platform_driver_register(&da9062_regulator_driver); +} +subsys_initcall(da9062_regulator_init); + +static void __exit da9062_regulator_cleanup(void) +{ + platform_driver_unregister(&da9062_regulator_driver); +} +module_exit(da9062_regulator_cleanup); + +/* Module information */ +MODULE_AUTHOR("S Twiss "); +MODULE_DESCRIPTION("REGULATOR device driver for Dialog DA9062"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform: da9062-regulators");