Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754689Ab3GXQfZ (ORCPT ); Wed, 24 Jul 2013 12:35:25 -0400 Received: from metis.ext.pengutronix.de ([92.198.50.35]:56491 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753695Ab3GXQfW (ORCPT ); Wed, 24 Jul 2013 12:35:22 -0400 From: Philipp Zabel To: linux-kernel@vger.kernel.org Cc: Mark Brown , Lee Jones , Krystian Garbaciak , Philipp Zabel Subject: [PATCH 2/2] regulator: Add Dialog DA9063 voltage regulators support. Date: Wed, 24 Jul 2013 18:34:43 +0200 Message-Id: <1374683683-13370-3-git-send-email-p.zabel@pengutronix.de> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1374683683-13370-1-git-send-email-p.zabel@pengutronix.de> References: <1374683683-13370-1-git-send-email-p.zabel@pengutronix.de> X-SA-Exim-Connect-IP: 10.1.0.104 X-SA-Exim-Mail-From: p.zabel@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 34687 Lines: 1123 From: Krystian Garbaciak The driver adds support for the following DA9063 PMIC regulators: - 11x LDOs (named LDO1 - LDO11), - 6x buck converters (BCORE1, BCORE2, BPRO, BMEM, BIO, BPERI), - 1x power switch to switch on/off 32 KHz oscilator output (32K_OUT). Regulators provide following operations: - REGULATOR_CHANGE_STATUS for all regulators, - REGULATOR_CHANGE_VOLTAGE for LDOs and buck converters, - REGULATOR_CHANGE_MODE for LDOs and buck converters, where: - LDOs allow REGULATOR_MODE_NORMAL and REGULATOR_MODE_STANDBY, - buck converters allow REGULATOR_MODE_FAST, REGULATOR_MODE_NORMAL and REGULATOR_MODE_STANDBY, - REGULATOR_CHANGE_CURRENT for buck converters (current limits). The driver generates REGULATOR_EVENT_OVER_CURRENT for LDO3, LDO4, LDO7, LDO8 and LDO11. Internally, PMIC provides two voltage configurations for normal and suspend system state for each regulator. The driver switches between those on suspend/wake-up to provide quick and fluent output voltage change. This driver requires MFD core driver for operation. Signed-off-by: Krystian Garbaciak Signed-off-by: Philipp Zabel --- drivers/regulator/Kconfig | 10 + drivers/regulator/Makefile | 1 + drivers/regulator/da9063-regulator.c | 1042 ++++++++++++++++++++++++++++++++++ 3 files changed, 1053 insertions(+) create mode 100644 drivers/regulator/da9063-regulator.c diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index f1e6ad9..b976098 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -120,6 +120,16 @@ config REGULATOR_DA9055 This driver can also be built as a module. If so, the module will be called da9055-regulator. +config REGULATOR_DA9063 + tristate "Dialog Semiconductor DA9063 regulators" + depends on MFD_DA9063 + help + Say y here to support the BUCKs and LDOs regulators found on + DA9063 PMICs. + + This driver can also be built as a module. If so, the module + will be called da9063-regulator. + config REGULATOR_FAN53555 tristate "Fairchild FAN53555 Regulator" depends on I2C diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index ba4a3cf..49c9342 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -20,6 +20,7 @@ obj-$(CONFIG_REGULATOR_AS3711) += as3711-regulator.o obj-$(CONFIG_REGULATOR_DA903X) += da903x.o obj-$(CONFIG_REGULATOR_DA9052) += da9052-regulator.o obj-$(CONFIG_REGULATOR_DA9055) += da9055-regulator.o +obj-$(CONFIG_REGULATOR_DA9063) += da9063-regulator.o obj-$(CONFIG_REGULATOR_DBX500_PRCMU) += dbx500-prcmu.o obj-$(CONFIG_REGULATOR_DB8500_PRCMU) += db8500-prcmu.o obj-$(CONFIG_REGULATOR_FAN53555) += fan53555.o diff --git a/drivers/regulator/da9063-regulator.c b/drivers/regulator/da9063-regulator.c new file mode 100644 index 0000000..7b81bf5 --- /dev/null +++ b/drivers/regulator/da9063-regulator.c @@ -0,0 +1,1042 @@ +/* + * Regulator driver for DA9063 PMIC series + * + * Copyright 2012 Dialog Semiconductors Ltd. + * Copyright 2013 Philipp Zabel, Pengutronix + * + * Author: Krystian Garbaciak + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +/* Definition for registering bit fields */ +struct bfield { + unsigned short addr; + unsigned char mask; +}; +#define BFIELD(_addr, _mask) \ + { .addr = _addr, .mask = _mask } + +struct field { + unsigned short addr; + unsigned char mask; + unsigned char shift; + unsigned char offset; +}; +#define FIELD(_addr, _mask, _shift, _offset) \ + { .addr = _addr, .mask = _mask, .shift = _shift, .offset = _offset } + +/* Regulator capabilities and registers description */ +struct da9063_regulator_info { + struct regulator_desc desc; + + /* Current limiting */ + unsigned n_current_limits; + const int *current_limits; + + /* DA9063 main register fields */ + struct field mode; /* buck mode of operation */ + struct bfield suspend; + struct bfield sleep; + struct bfield suspend_sleep; + int suspend_vsel_reg; + struct field ilimit; + + /* DA9063 event detection bit */ + struct bfield oc_event; +}; + +/* Macro for switch regulator */ +#define DA9063_SWITCH(chip, regl_name) \ + .desc.id = chip##_ID_##regl_name, \ + .desc.name = __stringify(chip##_##regl_name), \ + .desc.ops = &da9063_switch_ops, \ + .desc.n_voltages = 0 + +/* Macros for LDO */ +#define DA9063_LDO(chip, regl_name, min_mV, step_mV, max_mV) \ + .desc.id = chip##_ID_##regl_name, \ + .desc.name = __stringify(chip##_##regl_name), \ + .desc.ops = &da9063_ldo_ops, \ + .desc.min_uV = (min_mV) * 1000, \ + .desc.uV_step = (step_mV) * 1000, \ + .desc.n_voltages = (((max_mV) - (min_mV))/(step_mV) + 1) + +#define DA9063_LDO_COMMON_FIELDS(regl_name) \ + .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ + .desc.enable_mask = DA9063_LDO_EN, \ + .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_LDO_SL), \ + .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_LDO_SL), \ + .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ + .desc.vsel_mask = DA9063_V##regl_name##_MASK, \ + .desc.linear_min_sel = DA9063_V##regl_name##_BIAS, \ + .suspend_vsel_reg = DA9063_REG_V##regl_name##_B + +/* linear_min_sel */ + +/* Macros for voltage DC/DC converters (BUCKs) */ +#define DA9063_BUCK(chip, regl_name, min_mV, step_mV, max_mV, limits_array) \ + .desc.id = chip##_ID_##regl_name, \ + .desc.name = __stringify(chip##_##regl_name), \ + .desc.ops = &da9063_buck_ops, \ + .desc.min_uV = (min_mV) * 1000, \ + .desc.uV_step = (step_mV) * 1000, \ + .desc.n_voltages = ((max_mV) - (min_mV))/(step_mV) + 1, \ + .current_limits = limits_array, \ + .n_current_limits = ARRAY_SIZE(limits_array) + +#define DA9063_BUCK_COMMON_FIELDS(regl_name) \ + .desc.enable_reg = DA9063_REG_##regl_name##_CONT, \ + .desc.enable_mask = DA9063_BUCK_EN, \ + .sleep = BFIELD(DA9063_REG_V##regl_name##_A, DA9063_BUCK_SL), \ + .suspend_sleep = BFIELD(DA9063_REG_V##regl_name##_B, DA9063_BUCK_SL), \ + .desc.vsel_reg = DA9063_REG_V##regl_name##_A, \ + .desc.vsel_mask = DA9063_VBUCK_MASK, \ + .desc.linear_min_sel = DA9063_VBUCK_BIAS, \ + .suspend_vsel_reg = DA9063_REG_V##regl_name##_B, \ + .mode = FIELD(DA9063_REG_##regl_name##_CFG, DA9063_BUCK_MODE_MASK, \ + DA9063_BUCK_MODE_SHIFT, 0) + +/* Defines asignment of regulators info table to chip model */ +struct da9063_dev_model { + const struct da9063_regulator_info *regulator_info; + unsigned n_regulators; + unsigned dev_model; +}; + +/* Single regulator settings */ +struct da9063_regulator { + struct regulator_desc desc; + struct regulator_dev *rdev; + struct da9063 *hw; + const struct da9063_regulator_info *info; + + unsigned mode; + unsigned suspend_mode; +}; + +/* Encapsulates all information for the regulators driver */ +struct da9063_regulators { + int irq_ldo_lim; + int irq_uvov; + + unsigned n_regulators; + /* Array size to be defined during init. Keep at end. */ + struct da9063_regulator regulator[0]; +}; + +/* System states for da9063_update_mode_internal() + and for da9063_get_mode_internal() */ +enum { + SYS_STATE_NORMAL, + SYS_STATE_SUSPEND, + SYS_STATE_CURRENT +}; + +/* BUCK modes for DA9063 */ +enum { + BUCK_MODE_MANUAL, /* 0 */ + BUCK_MODE_SLEEP, /* 1 */ + BUCK_MODE_SYNC, /* 2 */ + BUCK_MODE_AUTO /* 3 */ +}; + +/* Regulator operations */ +static int da9063_set_current_limit(struct regulator_dev *rdev, + int min_uA, int max_uA); +static int da9063_get_current_limit(struct regulator_dev *rdev); +static int da9063_enable(struct regulator_dev *rdev); +static int da9063_set_mode(struct regulator_dev *rdev, unsigned int mode); +static unsigned da9063_get_mode(struct regulator_dev *rdev); +static int da9063_get_status(struct regulator_dev *rdev); +static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV); +static int da9063_suspend_enable(struct regulator_dev *rdev); +static int da9063_set_suspend_mode(struct regulator_dev *rdev, unsigned mode); + +static struct regulator_ops da9063_switch_ops = { + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .set_suspend_enable = regulator_enable_regmap, + .set_suspend_disable = regulator_disable_regmap, +}; + +static struct regulator_ops da9063_ldo_ops = { + .enable = da9063_enable, + .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 = da9063_set_mode, + .get_mode = da9063_get_mode, + .get_status = da9063_get_status, + .set_suspend_voltage = da9063_set_suspend_voltage, + .set_suspend_enable = da9063_suspend_enable, + .set_suspend_disable = regulator_disable_regmap, + .set_suspend_mode = da9063_set_suspend_mode, +}; + +static struct regulator_ops da9063_buck_ops = { + .enable = da9063_enable, + .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 = da9063_set_current_limit, + .get_current_limit = da9063_get_current_limit, + .set_mode = da9063_set_mode, + .get_mode = da9063_get_mode, + .get_status = da9063_get_status, + .set_suspend_voltage = da9063_set_suspend_voltage, + .set_suspend_enable = da9063_suspend_enable, + .set_suspend_disable = regulator_disable_regmap, + .set_suspend_mode = da9063_set_suspend_mode, +}; + +/* Current limits array (in uA) for BCORE1, BCORE2, BPRO. + Entry indexes corresponds to register values. */ +static const int da9063_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 BMEM, BIO, BPERI. + Entry indexes corresponds to register values. */ +static const int da9063_buck_b_limits[] = { + 1500000, 1600000, 1700000, 1800000, 1900000, 2000000, 2100000, 2200000, + 2300000, 2400000, 2500000, 2600000, 2700000, 2800000, 2900000, 3000000 +}; + +/* Current limits array (in uA) for merged BCORE1 and BCORE2. + Entry indexes corresponds to register values. */ +static const int da9063_bcores_merged_limits[] = { + 1000000, 1200000, 1400000, 1600000, 1800000, 2000000, 2200000, 2400000, + 2600000, 2800000, 3000000, 3200000, 3400000, 3600000, 3800000, 4000000 +}; + +/* Current limits array (in uA) for merged BMEM and BIO. + Entry indexes corresponds to register values. */ +static const int da9063_bmem_bio_merged_limits[] = { + 3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000, + 4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000 +}; + +/* Info of regulators for DA9063 */ +static const struct da9063_regulator_info da9063_regulator_info[] = { + { + DA9063_BUCK(DA9063, BCORE1, 300, 10, 1570, + da9063_buck_a_limits), + DA9063_BUCK_COMMON_FIELDS(BCORE1), + .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), + .ilimit = FIELD(DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK, + DA9063_BCORE1_ILIM_SHIFT, 0), + }, + { + DA9063_BUCK(DA9063, BCORE2, 300, 10, 1570, + da9063_buck_a_limits), + DA9063_BUCK_COMMON_FIELDS(BCORE2), + .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE2_SEL), + + .ilimit = FIELD(DA9063_REG_BUCK_ILIM_C, + DA9063_BCORE2_ILIM_MASK, + DA9063_BCORE2_ILIM_SHIFT, + 0), + }, + { + DA9063_BUCK(DA9063, BPRO, 530, 10, 1800, + da9063_buck_a_limits), + DA9063_BUCK_COMMON_FIELDS(BPRO), + .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPRO_SEL), + .ilimit = FIELD(DA9063_REG_BUCK_ILIM_B, DA9063_BPRO_ILIM_MASK, + DA9063_BPRO_ILIM_SHIFT, 0), + }, + { + DA9063_BUCK(DA9063, BMEM, 800, 20, 3340, + da9063_buck_b_limits), + DA9063_BUCK_COMMON_FIELDS(BMEM), + .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), + .ilimit = FIELD(DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK, + DA9063_BMEM_ILIM_SHIFT, 0), + }, + { + DA9063_BUCK(DA9063, BIO, 800, 20, 3340, + da9063_buck_b_limits), + DA9063_BUCK_COMMON_FIELDS(BIO), + .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VBIO_SEL), + .ilimit = FIELD(DA9063_REG_BUCK_ILIM_A, DA9063_BIO_ILIM_MASK, + DA9063_BIO_ILIM_SHIFT, 0), + }, + { + DA9063_BUCK(DA9063, BPERI, 800, 20, 3340, + da9063_buck_b_limits), + DA9063_BUCK_COMMON_FIELDS(BPERI), + .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBPERI_SEL), + .ilimit = FIELD(DA9063_REG_BUCK_ILIM_B, DA9063_BPERI_ILIM_MASK, + DA9063_BPERI_ILIM_SHIFT, 0), + }, + { + DA9063_BUCK(DA9063, BCORES_MERGED, 300, 10, 1570, + da9063_bcores_merged_limits), + /* BCORES_MERGED uses the same register fields as BCORE1 */ + DA9063_BUCK_COMMON_FIELDS(BCORE1), + .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBCORE1_SEL), + .ilimit = FIELD(DA9063_REG_BUCK_ILIM_C, DA9063_BCORE1_ILIM_MASK, + DA9063_BCORE1_ILIM_SHIFT, 0), + }, + { + DA9063_BUCK(DA9063, BMEM_BIO_MERGED, 800, 20, 3340, + da9063_bmem_bio_merged_limits), + /* BMEM_BIO_MERGED uses the same register fields as BMEM */ + DA9063_BUCK_COMMON_FIELDS(BMEM), + .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VBMEM_SEL), + .ilimit = FIELD(DA9063_REG_BUCK_ILIM_A, DA9063_BMEM_ILIM_MASK, + DA9063_BMEM_ILIM_SHIFT, 0), + }, + { + DA9063_LDO(DA9063, LDO1, 600, 20, 1860), + DA9063_LDO_COMMON_FIELDS(LDO1), + .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO1_SEL), + }, + { + DA9063_LDO(DA9063, LDO2, 600, 20, 1860), + DA9063_LDO_COMMON_FIELDS(LDO2), + .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO2_SEL), + }, + { + DA9063_LDO(DA9063, LDO3, 900, 20, 3440), + DA9063_LDO_COMMON_FIELDS(LDO3), + .suspend = BFIELD(DA9063_REG_DVC_1, DA9063_VLDO3_SEL), + .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO3_LIM), + }, + { + DA9063_LDO(DA9063, LDO4, 900, 20, 3440), + DA9063_LDO_COMMON_FIELDS(LDO4), + .suspend = BFIELD(DA9063_REG_DVC_2, DA9063_VLDO4_SEL), + .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO4_LIM), + }, + { + DA9063_LDO(DA9063, LDO5, 900, 50, 3600), + DA9063_LDO_COMMON_FIELDS(LDO5), + .suspend = BFIELD(DA9063_REG_LDO5_CONT, DA9063_VLDO5_SEL), + }, + { + DA9063_LDO(DA9063, LDO6, 900, 50, 3600), + DA9063_LDO_COMMON_FIELDS(LDO6), + .suspend = BFIELD(DA9063_REG_LDO6_CONT, DA9063_VLDO6_SEL), + }, + { + DA9063_LDO(DA9063, LDO7, 900, 50, 3600), + DA9063_LDO_COMMON_FIELDS(LDO7), + .suspend = BFIELD(DA9063_REG_LDO7_CONT, DA9063_VLDO7_SEL), + .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO7_LIM), + }, + { + DA9063_LDO(DA9063, LDO8, 900, 50, 3600), + DA9063_LDO_COMMON_FIELDS(LDO8), + .suspend = BFIELD(DA9063_REG_LDO8_CONT, DA9063_VLDO8_SEL), + .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO8_LIM), + }, + { + DA9063_LDO(DA9063, LDO9, 950, 50, 3600), + DA9063_LDO_COMMON_FIELDS(LDO9), + .suspend = BFIELD(DA9063_REG_LDO9_CONT, DA9063_VLDO9_SEL), + }, + { + DA9063_LDO(DA9063, LDO10, 900, 50, 3600), + DA9063_LDO_COMMON_FIELDS(LDO10), + .suspend = BFIELD(DA9063_REG_LDO10_CONT, DA9063_VLDO10_SEL), + }, + { + DA9063_LDO(DA9063, LDO11, 900, 50, 3600), + DA9063_LDO_COMMON_FIELDS(LDO11), + .suspend = BFIELD(DA9063_REG_LDO11_CONT, DA9063_VLDO11_SEL), + .oc_event = BFIELD(DA9063_REG_STATUS_D, DA9063_LDO11_LIM), + }, + { + DA9063_SWITCH(DA9063, 32K_OUT), + .desc.enable_reg = DA9063_REG_EN_32K, + .desc.enable_mask = DA9063_OUT_32K_EN, + }, +}; + +/* Link chip model with regulators info table */ +static struct da9063_dev_model regulators_models[] = { + { + .regulator_info = da9063_regulator_info, + .n_regulators = ARRAY_SIZE(da9063_regulator_info), + .dev_model = PMIC_DA9063, + }, + { } +}; + +/* + * Regulator internal functions + */ +static int da9063_update_mode_internal(struct da9063_regulator *regl, + int sys_state) +{ + const struct da9063_regulator_info *rinfo = regl->info; + unsigned val; + unsigned mode; + int ret; + + if (sys_state == SYS_STATE_SUSPEND) + /* Get mode for regulator in suspend state */ + mode = regl->suspend_mode; + else + /* Get mode for regulator in normal operation */ + mode = regl->mode; + + /* LDOs use sleep flags - one for normal and one for suspend state. + For BUCKs single mode register field is used in normal and + suspend state. */ + if (rinfo->mode.addr) { + /* Set mode for BUCK - 3 modes are supported */ + 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; + } + val = val << rinfo->mode.shift; + + ret = regmap_update_bits(regl->hw->regmap, rinfo->mode.addr, + rinfo->mode.mask, val); + } else { + /* Set mode for LDO - 2 modes are supported */ + switch (mode) { + case REGULATOR_MODE_NORMAL: + val = 0; + break; + case REGULATOR_MODE_STANDBY: + val = DA9063_LDO_SL; + break; + default: + return -EINVAL; + } + + if (sys_state == SYS_STATE_SUSPEND) { + if (!rinfo->suspend_sleep.addr) + return -EINVAL; + ret = regmap_update_bits(regl->hw->regmap, + rinfo->suspend_sleep.addr, + rinfo->suspend_sleep.mask, + val); + } else { + if (!rinfo->sleep.addr) + return -EINVAL; + ret = regmap_update_bits(regl->hw->regmap, + rinfo->sleep.addr, + rinfo->sleep.mask, val); + } + } + + return ret; +} + +static unsigned da9063_get_mode_internal(struct da9063_regulator *regl, + int sys_state) +{ + const struct da9063_regulator_info *rinfo = regl->info; + int addr, mask, ret, val; + unsigned mode = 0; + + /* Bucks use single mode register field for normal operation + and suspend state. LDOs use sleep flags - one for normal + and one for suspend state. */ + if (rinfo->mode.addr) { + /* For BUCKs, there are 3 modes to map to */ + ret = regmap_read(regl->hw->regmap, rinfo->mode.addr, &val); + if (ret < 0) + return ret; + + val = (val & rinfo->mode.mask) >> rinfo->mode.shift; + 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; + } + } else if (rinfo->sleep.addr) { + /* For LDOs there are 2 modes to map to */ + mode = REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY; + /* Sleep flag bit decides the mode */ + } else { + /* No support */ + return 0; + } + + /* If sys_state == SYS_STATE_CURRENT, current regulator state + is detected. */ + if (sys_state == SYS_STATE_CURRENT && rinfo->suspend.addr) { + ret = regmap_read(regl->hw->regmap, rinfo->suspend.addr, &val); + if (ret < 0) + return ret; + + if (val & rinfo->suspend.mask) + sys_state = SYS_STATE_SUSPEND; + else + sys_state = SYS_STATE_NORMAL; + } + + /* Read regulator mode from proper register, + depending on selected system state */ + if (sys_state == SYS_STATE_SUSPEND && rinfo->suspend_sleep.addr) { + addr = rinfo->suspend_sleep.addr; + mask = rinfo->suspend_sleep.mask; + } else { + addr = rinfo->sleep.addr; + mask = rinfo->sleep.mask; + } + + ret = regmap_read(regl->hw->regmap, addr, &val); + if (ret < 0) + return ret; + + if (val & mask) + mode &= REGULATOR_MODE_STANDBY; + else + mode &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_FAST; + + return mode; +} + +static int da9063_set_current_limit(struct regulator_dev *rdev, + int min_uA, int max_uA) +{ + struct da9063_regulator *regl = rdev_get_drvdata(rdev); + const struct da9063_regulator_info *rinfo = regl->info; + int val = INT_MAX; + unsigned sel = 0; + int n; + int tval; + + if (!rinfo->current_limits) + return -EINVAL; + + for (n = 0; n < rinfo->n_current_limits; n++) { + tval = rinfo->current_limits[n]; + if (tval >= min_uA && tval <= max_uA && val > tval) { + val = tval; + sel = n; + } + } + if (val == INT_MAX) + return -EINVAL; + + sel = (sel + rinfo->ilimit.offset) << rinfo->ilimit.shift; + return regmap_update_bits(regl->hw->regmap, rinfo->ilimit.addr, + rinfo->ilimit.mask, sel); +} + +static int da9063_get_current_limit(struct regulator_dev *rdev) +{ + struct da9063_regulator *regl = rdev_get_drvdata(rdev); + const struct da9063_regulator_info *rinfo = regl->info; + int ret, sel; + + ret = regmap_read(regl->hw->regmap, rinfo->ilimit.addr, &sel); + if (ret < 0) + return ret; + + sel = (sel & rinfo->ilimit.mask) >> rinfo->ilimit.shift; + sel -= rinfo->ilimit.offset; + if (sel < 0) + sel = 0; + if (sel >= rinfo->n_current_limits) + sel = rinfo->n_current_limits - 1; + + return rinfo->current_limits[sel]; +} + +static int da9063_enable(struct regulator_dev *rdev) +{ + struct da9063_regulator *regl = rdev_get_drvdata(rdev); + int ret; + + if (regl->info->suspend.mask) { + /* Make sure to exit from suspend mode on enable */ + ret = regmap_update_bits(regl->hw->regmap, + regl->info->suspend.addr, + regl->info->suspend.mask, 0); + if (ret < 0) + return ret; + + /* BUCKs need mode update after wake-up from suspend state. */ + ret = da9063_update_mode_internal(regl, SYS_STATE_NORMAL); + if (ret < 0) + return ret; + } + + return regulator_enable_regmap(rdev); +} + +static int da9063_set_mode(struct regulator_dev *rdev, unsigned mode) +{ + struct da9063_regulator *regl = rdev_get_drvdata(rdev); + unsigned orig_mode = regl->mode; + int ret; + + regl->mode = mode; + ret = da9063_update_mode_internal(regl, SYS_STATE_NORMAL); + if (ret) + regl->mode = orig_mode; + + return ret; +} + +static unsigned da9063_get_mode(struct regulator_dev *rdev) +{ + struct da9063_regulator *regl = rdev_get_drvdata(rdev); + + return da9063_get_mode_internal(regl, SYS_STATE_CURRENT); +} + +static int da9063_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 = da9063_get_mode(rdev); + if (ret > 0) + ret = regulator_mode_to_status(ret); + else if (ret == 0) + ret = -EIO; + } + + return ret; +} + +static int da9063_set_suspend_voltage(struct regulator_dev *rdev, int uV) +{ + struct da9063_regulator *regl = rdev_get_drvdata(rdev); + const struct da9063_regulator_info *rinfo = regl->info; + int ret, sel; + + sel = regulator_map_voltage_linear(rdev, uV, uV); + if (sel < 0) + return -EINVAL; + + 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 da9063_suspend_enable(struct regulator_dev *rdev) +{ + int ret; + struct da9063_regulator *regl = rdev_get_drvdata(rdev); + const struct bfield *bsuspend = ®l->info->suspend; + + ret = regmap_update_bits(regl->hw->regmap, bsuspend->addr, + bsuspend->mask, bsuspend->mask); + return ret; +} + +static int da9063_set_suspend_mode(struct regulator_dev *rdev, unsigned mode) +{ + struct da9063_regulator *regl = rdev_get_drvdata(rdev); + int ret; + + regl->suspend_mode = mode; + ret = da9063_update_mode_internal(regl, SYS_STATE_SUSPEND); + return ret; +} + +/* Regulator interrupt handlers */ +irqreturn_t da9063_ldo_lim_event(int irq, void *data) +{ + struct da9063_regulators *regulators = data; + struct da9063 *hw = regulators->regulator[0].hw; + struct da9063_regulator *regl; + int bits, i , ret; + + ret = regmap_read(hw->regmap, DA9063_REG_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.addr != DA9063_REG_STATUS_D) + continue; + + if (regl->info->oc_event.mask & bits) + regulator_notifier_call_chain(regl->rdev, + REGULATOR_EVENT_OVER_CURRENT, NULL); + } + + return IRQ_HANDLED; +} + +/* + * Probing and Initialisation functions + */ +static const struct da9063_regulator_info * +da9063_get_regl_info(const struct da9063 *da9063, + const struct da9063_dev_model *model, int id) +{ + int m; + + for (m = model->n_regulators - 1; + model->regulator_info[m].desc.id != id; m--) { + if (m <= 0) + return NULL; + } + return &model->regulator_info[m]; +} + +#ifdef CONFIG_OF +static struct of_regulator_match da9063_matches[] = { + [DA9063_ID_BCORE1] = { .name = "bcore1" }, + [DA9063_ID_BCORE2] = { .name = "bcore2" }, + [DA9063_ID_BPRO] = { .name = "bpro", }, + [DA9063_ID_BMEM] = { .name = "bmem", }, + [DA9063_ID_BIO] = { .name = "bio", }, + [DA9063_ID_BPERI] = { .name = "bperi", }, + [DA9063_ID_BCORES_MERGED] = { .name = "bcores-merged" }, + [DA9063_ID_BMEM_BIO_MERGED] = { .name = "bmem-bio-merged", }, + [DA9063_ID_LDO1] = { .name = "ldo1", }, + [DA9063_ID_LDO2] = { .name = "ldo2", }, + [DA9063_ID_LDO3] = { .name = "ldo3", }, + [DA9063_ID_LDO4] = { .name = "ldo4", }, + [DA9063_ID_LDO5] = { .name = "ldo5", }, + [DA9063_ID_LDO6] = { .name = "ldo6", }, + [DA9063_ID_LDO7] = { .name = "ldo7", }, + [DA9063_ID_LDO8] = { .name = "ldo8", }, + [DA9063_ID_LDO9] = { .name = "ldo9", }, + [DA9063_ID_LDO10] = { .name = "ldo10", }, + [DA9063_ID_LDO11] = { .name = "ldo11", }, + [DA9063_ID_32K_OUT] = { .name = "32k-out", }, +}; + +static struct da9063_regulators_pdata *da9063_parse_regulators_dt( + struct platform_device *pdev, + struct of_regulator_match **da9063_reg_matches) +{ + struct da9063_regulators_pdata *pdata; + struct da9063_regulator_data *rdata; + struct device_node *node; + int i, n, num; + + node = of_find_node_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, da9063_matches, + ARRAY_SIZE(da9063_matches)); + 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(da9063_matches); i++) { + if (!da9063_matches[i].init_data) + continue; + + rdata = &pdata->regulator_data[n]; + rdata->id = i; + rdata->initdata = da9063_matches[i].init_data; + + n++; + }; + + *da9063_reg_matches = da9063_matches; + return pdata; +} +#else +static struct da9063_regulators_pdata *da9063_parse_regulators_dt( + struct platform_device *pdev, + struct of_regulator_match **da9063_reg_matches) +{ + da9063_reg_matches = NULL; + return PTR_ERR(-ENODEV); +} +#endif + +static int da9063_regulator_probe(struct platform_device *pdev) +{ + struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent); + struct da9063_pdata *da9063_pdata = dev_get_platdata(da9063->dev); + struct of_regulator_match *da9063_reg_matches; + struct da9063_regulators_pdata *regl_pdata; + struct da9063_regulator_data *rdata; + const struct da9063_dev_model *model; + struct da9063_regulators *regulators; + struct da9063_regulator *regl; + struct regulator_config config; + bool bcores_merged, bmem_bio_merged; + int irq, n, ret, val; + size_t size; + + regl_pdata = da9063_pdata ? da9063_pdata->regulators_pdata : NULL; + + if (!regl_pdata) + regl_pdata = da9063_parse_regulators_dt(pdev, + &da9063_reg_matches); + + if (IS_ERR(regl_pdata) || regl_pdata->n_regulators == 0) { + dev_err(&pdev->dev, + "No regulators defined for the platform\n"); + return PTR_ERR(regl_pdata); + } + + /* Find regulators set for particular device model */ + for (model = regulators_models; model->regulator_info; model++) { + if (model->dev_model == da9063_model(da9063)) + break; + } + if (!model->regulator_info) { + dev_err(&pdev->dev, "Chip model not recognised (%u)\n", + da9063_model(da9063)); + return -ENODEV; + } + + ret = regmap_read(da9063->regmap, DA9063_REG_CONFIG_H, &val); + if (ret < 0) { + dev_err(&pdev->dev, + "Error while reading BUCKs configuration\n"); + return -EIO; + } + bcores_merged = val & DA9063_BCORE_MERGE; + bmem_bio_merged = val & DA9063_BUCK_MERGE; + + /* Allocate memory required by usable regulators */ + size = sizeof(struct da9063_regulators) + + regl_pdata->n_regulators * sizeof(struct da9063_regulator); + regulators = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); + if (!regulators) { + dev_err(&pdev->dev, "No memory for regulators\n"); + return -ENOMEM; + } + + regulators->n_regulators = regl_pdata->n_regulators; + platform_set_drvdata(pdev, regulators); + + /* Register all regulators declared in platform information */ + n = 0; + while (n < regulators->n_regulators) { + rdata = ®l_pdata->regulator_data[n]; + + /* Check regulator ID against merge mode configuration */ + switch (rdata->id) { + case DA9063_ID_BCORE1: + case DA9063_ID_BCORE2: + if (bcores_merged) { + dev_err(&pdev->dev, + "Cannot use BCORE1 and BCORE2 separately, when in merge mode\n"); + ret = -EINVAL; + goto err; + } + break; + case DA9063_ID_BMEM: + case DA9063_ID_BIO: + if (bmem_bio_merged) { + dev_err(&pdev->dev, + "Cannot use BMEM and BIO separately, when in merge mode\n"); + ret = -EINVAL; + goto err; + } + break; + case DA9063_ID_BCORES_MERGED: + if (!bcores_merged) { + dev_err(&pdev->dev, + "BCORE1 and BCORE2 are unavailable in merge mode\n"); + ret = -EINVAL; + goto err; + } + break; + case DA9063_ID_BMEM_BIO_MERGED: + if (!bmem_bio_merged) { + dev_err(&pdev->dev, + "BMEM and BIO are unavailable in merge mode\n"); + ret = -EINVAL; + goto err; + } + break; + } + + /* Initialise regulator structure */ + regl = ®ulators->regulator[n]; + regl->hw = da9063; + regl->info = da9063_get_regl_info(da9063, model, rdata->id); + if (!regl->info) { + dev_err(&pdev->dev, + "Invalid regulator ID in platform data\n"); + ret = -EINVAL; + goto err; + } + regl->desc = regl->info->desc; + regl->desc.type = REGULATOR_VOLTAGE; + regl->desc.owner = THIS_MODULE; + + /* Get current modes of operation (A/B voltage selection) + for normal and suspend states */ + ret = da9063_get_mode_internal(regl, SYS_STATE_NORMAL); + if (ret < 0) { + dev_err(&pdev->dev, + "Failed to read %s regulator's mode\n", + regl->desc.name); + goto err; + } + if (ret == 0) + regl->mode = REGULATOR_MODE_NORMAL; + else + regl->mode = ret; + + ret = da9063_get_mode_internal(regl, SYS_STATE_SUSPEND); + if (ret < 0) { + dev_err(&pdev->dev, + "Failed to read %s regulator's mode\n", + regl->desc.name); + goto err; + } + if (ret == 0) + regl->suspend_mode = REGULATOR_MODE_NORMAL; + else + regl->suspend_mode = ret; + + /* Register regulator */ + config.dev = &pdev->dev; + config.init_data = rdata->initdata; + config.driver_data = regl; + config.regmap = da9063->regmap; + if (da9063_reg_matches) + config.of_node = da9063_reg_matches[rdata->id].of_node; + regl->rdev = regulator_register(®l->desc, &config); + if (IS_ERR_OR_NULL(regl->rdev)) { + dev_err(&pdev->dev, + "Failed to register %s regulator\n", + regl->desc.name); + ret = PTR_ERR(regl->rdev); + goto err; + } + n++; + } + + /* LDOs overcurrent event support */ + irq = platform_get_irq_byname(pdev, "LDO_LIM"); + if (irq < 0) { + ret = irq; + dev_err(&pdev->dev, "Failed to get IRQ.\n"); + goto err; + } + + regulators->irq_ldo_lim = regmap_irq_get_virq(da9063->regmap_irq, irq); + if (regulators->irq_ldo_lim >= 0) { + ret = request_threaded_irq(regulators->irq_ldo_lim, + NULL, da9063_ldo_lim_event, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, + "LDO_LIM", regulators); + if (ret) { + dev_err(&pdev->dev, + "Failed to request LDO_LIM IRQ.\n"); + regulators->irq_ldo_lim = -ENXIO; + } + } + + return 0; + +err: + /* Wind back regulators registeration */ + while (--n >= 0) + regulator_unregister(regulators->regulator[n].rdev); + + return ret; +} + +static int da9063_regulator_remove(struct platform_device *pdev) +{ + struct da9063_regulators *regulators = platform_get_drvdata(pdev); + struct da9063_regulator *regl; + + free_irq(regulators->irq_ldo_lim, regulators); + free_irq(regulators->irq_uvov, regulators); + + for (regl = ®ulators->regulator[regulators->n_regulators - 1]; + regl >= ®ulators->regulator[0]; regl--) + regulator_unregister(regl->rdev); + + return 0; +} + +static struct platform_driver da9063_regulator_driver = { + .driver = { + .name = DA9063_DRVNAME_REGULATORS, + .owner = THIS_MODULE, + }, + .probe = da9063_regulator_probe, + .remove = da9063_regulator_remove, +}; + +static int __init da9063_regulator_init(void) +{ + return platform_driver_register(&da9063_regulator_driver); +} +subsys_initcall(da9063_regulator_init); + +static void __exit da9063_regulator_cleanup(void) +{ + platform_driver_unregister(&da9063_regulator_driver); +} +module_exit(da9063_regulator_cleanup); + + +/* Module information */ +MODULE_AUTHOR("Krystian Garbaciak "); +MODULE_DESCRIPTION("DA9063 regulators driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("paltform:" DA9063_DRVNAME_REGULATORS); -- 1.8.3.2 -- 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/