Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753045AbaFCCMt (ORCPT ); Mon, 2 Jun 2014 22:12:49 -0400 Received: from mail1.bemta14.messagelabs.com ([193.109.254.111]:41184 "EHLO mail1.bemta14.messagelabs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751777AbaFCCMr (ORCPT ); Mon, 2 Jun 2014 22:12:47 -0400 X-Env-Sender: James.Ban.opensource@diasemi.com X-Msg-Ref: server-13.tower-193.messagelabs.com!1401761564!17598434!1 X-Originating-IP: [82.210.246.133] X-StarScan-Received: X-StarScan-Version: 6.11.3; banners=-,-,- X-VirusChecked: Checked Message-ID: <201406030212.s532C6YM022573@swsrvapps-01.diasemi.com> From: James Ban Date: Mon, 2 Jun 2014 08:17:03 +0100 Subject: [PATCH V3] regulator: DA9211 : new regulator driver To: Liam Girdwood , Mark Brown , Support Opensource , LKML CC: David Dajun Chen MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is the driver for the Dialog DA9211 Multi-phase 12A DC-DC Buck Converter regulator. It communicates via an I2C bus to the device. Signed-off-by: James Ban --- This patch is relative to linux-next repository tag next-20140530. Changes in V3: - Removed voltage selection in the da9211_regulator_set_suspend_voltage. Changes in V2: - Removed the redundant interupt code. drivers/regulator/Kconfig | 10 + drivers/regulator/Makefile | 1 + drivers/regulator/da9211-regulator.c | 704 +++++++++++++++++++++++++++++++++++ drivers/regulator/da9211-regulator.h | 271 ++++++++++++++ include/linux/regulator/da9211.h | 65 ++++ 5 files changed, 1051 insertions(+) create mode 100644 drivers/regulator/da9211-regulator.c create mode 100644 drivers/regulator/da9211-regulator.h create mode 100644 include/linux/regulator/da9211.h diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 789eb46..f5040fc 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -198,6 +198,16 @@ config REGULATOR_DA9210 converter 12A DC-DC Buck controlled through an I2C interface. +config REGULATOR_DA9211 + tristate "Dialog Semiconductor DA9211/DA9212 regulator" + depends on I2C + select REGMAP_I2C + help + Say y here to support for the Dialog Semiconductor DA9211/DA9212. + The DA9211/DA9212 is a multi-phase synchronous step down + converter 12A DC-DC Buck controlled through an I2C + interface. + config REGULATOR_DBX500_PRCMU bool diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index d461110..aa4a6aa 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -27,6 +27,7 @@ obj-$(CONFIG_REGULATOR_DA9052) += da9052-regulator.o obj-$(CONFIG_REGULATOR_DA9055) += da9055-regulator.o obj-$(CONFIG_REGULATOR_DA9063) += da9063-regulator.o obj-$(CONFIG_REGULATOR_DA9210) += da9210-regulator.o +obj-$(CONFIG_REGULATOR_DA9211) += da9211-regulator.o obj-$(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/da9211-regulator.c b/drivers/regulator/da9211-regulator.c new file mode 100644 index 0000000..e3ef43a --- /dev/null +++ b/drivers/regulator/da9211-regulator.c @@ -0,0 +1,704 @@ +/* + * da9211-regulator.c - Regulator device driver for DA9211 + * Copyright (C) 2014 Dialog Semiconductor Ltd. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Library General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "da9211-regulator.h" + +#define DA9211_BUCK_MODE_SLEEP 1 +#define DA9211_BUCK_MODE_SYNC 2 +#define DA9211_BUCK_MODE_AUTO 3 + +/* DA9211 REGULATOR IDs */ +#define DA9211_ID_BUCKA 0 +#define DA9211_ID_BUCKB 1 + +struct da9211_conf_reg { + int reg; + int sel_mask; +}; + +struct da9211_volt_reg { + int reg_a; + int reg_b; + int v_mask; +}; + +struct da9211_mode_reg { + int reg; + int mask; + int shift; +}; + +struct da9211_regulator_info { + struct regulator_desc reg_desc; + struct da9211_conf_reg conf; + struct da9211_volt_reg volt; + struct da9211_mode_reg mode; + int current_shift; +}; + +struct da9211 { + struct device *dev; + struct regmap *regmap; + struct da9211_pdata *pdata; + struct da9211_regulator_info *info; + struct regulator_dev *rdev[DA9211_MAX_REGULATORS]; + int num_regulator; + int chip_irq; +}; + +struct da9211_regulator { + struct da9211 *da9211; + struct da9211_regulator_info *info; + struct regulator_dev *rdev; + enum da9211_gpio_rsel_select reg_rselect; +}; + +static const struct regmap_config da9211_regmap_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +/* Default limits measured in millivolts and milliamps */ +#define DA9211_MIN_MV 300 +#define DA9211_MAX_MV 1570 +#define DA9211_STEP_MV 10 + +/* Current limits for buck (uA) indices corresponds with register values */ +static const int da9211_current_limits[] = { + 2000000, 2200000, 2400000, 2600000, 2800000, 3000000, 3200000, 3400000, + 3600000, 3800000, 4000000, 4200000, 4400000, 4600000, 4800000, 5000000 +}; + +static unsigned int da9211_buck_get_mode(struct regulator_dev *rdev) +{ + struct da9211_regulator *regulator = rdev_get_drvdata(rdev); + struct da9211_regulator_info *info = regulator->info; + struct da9211 *chip = regulator->da9211; + unsigned int data; + int ret, mode = 0; + + ret = regmap_read(chip->regmap, info->mode.reg, &data); + + if (ret < 0) + return ret; + + switch ((data & info->mode.mask) >> info->mode.shift) { + case DA9211_BUCK_MODE_SYNC: + mode = REGULATOR_MODE_FAST; + break; + case DA9211_BUCK_MODE_AUTO: + mode = REGULATOR_MODE_NORMAL; + break; + case DA9211_BUCK_MODE_SLEEP: + mode = REGULATOR_MODE_STANDBY; + break; + } + + return mode; +} + +static int da9211_buck_set_mode(struct regulator_dev *rdev, + unsigned int mode) +{ + struct da9211_regulator *regulator = rdev_get_drvdata(rdev); + struct da9211_regulator_info *info = regulator->info; + struct da9211 *chip = regulator->da9211; + int val = 0; + + switch (mode) { + case REGULATOR_MODE_FAST: + val = DA9211_BUCK_MODE_SYNC << info->mode.shift; + break; + case REGULATOR_MODE_NORMAL: + val = DA9211_BUCK_MODE_AUTO << info->mode.shift; + break; + case REGULATOR_MODE_STANDBY: + val = DA9211_BUCK_MODE_SLEEP << info->mode.shift; + break; + } + + return regmap_update_bits(chip->regmap, info->mode.reg, + info->mode.mask, val); +} + +static int da9211_set_current_limit(struct regulator_dev *rdev, int min, + int max) +{ + struct da9211_regulator *regulator = rdev_get_drvdata(rdev); + struct da9211_regulator_info *info = regulator->info; + struct da9211 *chip = regulator->da9211; + int i; + + /* search for closest to maximum */ + for (i = ARRAY_SIZE(da9211_current_limits)-1; i >= 0; i--) { + if (min <= da9211_current_limits[i] && + max >= da9211_current_limits[i]) { + return regmap_update_bits(chip->regmap, + DA9211_REG_BUCK_ILIM, + (0x0F << info->current_shift), i); + } + } + + return -EINVAL; +} + +static int da9211_regulator_enable(struct regulator_dev *rdev) +{ + struct da9211_regulator *regulator = rdev_get_drvdata(rdev); + struct da9211_regulator_info *info = regulator->info; + struct da9211 *chip = regulator->da9211; + int ret; + + /* Make sure to exit from suspend mode on enable */ + if (regulator->reg_rselect == DA9211_RSEL_NO_GPIO) { + ret = regmap_update_bits(chip->regmap, info->conf.reg, + info->conf.sel_mask, + DA9211_VBUCKA_SEL_A); + if (ret < 0) + return ret; + } + + return regulator_enable_regmap(rdev); +} + +static int da9211_get_current_limit(struct regulator_dev *rdev) +{ + struct da9211_regulator *regulator = rdev_get_drvdata(rdev); + struct da9211_regulator_info *info = regulator->info; + struct da9211 *chip = regulator->da9211; + unsigned int data; + int ret; + + ret = regmap_read(chip->regmap, DA9211_REG_BUCK_ILIM, &data); + if (ret < 0) + return ret; + + /* select one of 16 values: 0000 (2000mA) to 1111 (5000mA) */ + data = (data >> info->current_shift) & 0x0F; + return da9211_current_limits[data]; +} + +static int da9211_regulator_get_voltage_sel(struct regulator_dev *rdev) +{ + struct da9211_regulator *regulator = rdev_get_drvdata(rdev); + struct da9211_regulator_info *info = regulator->info; + struct da9211 *chip = regulator->da9211; + struct da9211_volt_reg volt = info->volt; + unsigned int data; + int ret, sel; + + /* + * There are two voltage register set A & B for voltage ramping but + * either one of then can be active therefore we first determine + * the active register set. + */ + ret = regmap_read(chip->regmap, info->conf.reg, &data); + if (ret < 0) + return ret; + + data &= info->conf.sel_mask; + + /* Get the voltage for the active register set A/B */ + if (data == DA9211_VBUCKA_SEL_A) + ret = regmap_read(chip->regmap, volt.reg_a, &data); + else + ret = regmap_read(chip->regmap, volt.reg_b, &data); + + if (ret < 0) + return ret; + + sel = (data & volt.v_mask); + return sel; +} + +static int da9211_regulator_set_voltage_sel(struct regulator_dev *rdev, + unsigned int selector) +{ + struct da9211_regulator *regulator = rdev_get_drvdata(rdev); + struct da9211_regulator_info *info = regulator->info; + struct da9211 *chip = regulator->da9211; + unsigned int data; + int ret; + + /* + * Regulator register set A/B is not selected through GPIO therefore + * we use default register set A for voltage ramping. + */ + if (regulator->reg_rselect == DA9211_RSEL_NO_GPIO) { + /* Select register set A */ + ret = regmap_update_bits(chip->regmap, info->conf.reg, + info->conf.sel_mask, + DA9211_VBUCKA_SEL_A); + if (ret < 0) + return ret; + + /* Set the voltage */ + return regmap_update_bits(chip->regmap, info->volt.reg_a, + info->volt.v_mask, selector); + } + + /* + * Here regulator register set A/B is selected through GPIO. + * Therefore we first determine the selected register set A/B and + * then set the desired voltage for that register set A/B. + */ + ret = regmap_read(chip->regmap, info->conf.reg, &data); + if (ret < 0) + return ret; + + data &= info->conf.sel_mask; + + /* Set the voltage */ + if (data == DA9211_VBUCKA_SEL_A) + return regmap_update_bits(chip->regmap, info->volt.reg_a, + info->volt.v_mask, selector); + else + return regmap_update_bits(chip->regmap, info->volt.reg_b, + info->volt.v_mask, selector); +} + +static int da9211_regulator_set_suspend_voltage(struct regulator_dev *rdev, + int uV) +{ + struct da9211_regulator *regulator = rdev_get_drvdata(rdev); + struct da9211_regulator_info *info = regulator->info; + struct da9211 *chip = regulator->da9211; + int ret; + + ret = regulator_map_voltage_linear(rdev, uV, uV); + if (ret < 0) + return ret; + + return regmap_update_bits(chip->regmap, info->volt.reg_b, + info->volt.v_mask, ret); +} + +static int da9211_suspend_enable(struct regulator_dev *rdev) +{ + struct da9211_regulator *regulator = rdev_get_drvdata(rdev); + struct da9211_regulator_info *info = regulator->info; + struct da9211 *chip = regulator->da9211; + + /* Select register set B for voltage ramping. */ + if (regulator->reg_rselect == DA9211_RSEL_NO_GPIO) + return regmap_update_bits(chip->regmap, info->conf.reg, + info->conf.sel_mask, + DA9211_VBUCKA_SEL_B); + else + return 0; +} + +static int da9211_suspend_disable(struct regulator_dev *rdev) +{ + struct da9211_regulator *regulator = rdev_get_drvdata(rdev); + struct da9211_regulator_info *info = regulator->info; + struct da9211 *chip = regulator->da9211; + + /* Diselect register set B. */ + if (regulator->reg_rselect == DA9211_RSEL_NO_GPIO) + return regmap_update_bits(chip->regmap, info->conf.reg, + info->conf.sel_mask, + DA9211_VBUCKA_SEL_A); + else + return 0; +} + +static struct regulator_ops da9211_buck_ops = { + .get_mode = da9211_buck_get_mode, + .set_mode = da9211_buck_set_mode, + .enable = da9211_regulator_enable, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .map_voltage = regulator_map_voltage_linear, + .set_voltage_sel = da9211_regulator_set_voltage_sel, + .get_voltage_sel = da9211_regulator_get_voltage_sel, + .list_voltage = regulator_list_voltage_linear, + .set_current_limit = da9211_set_current_limit, + .get_current_limit = da9211_get_current_limit, + .set_suspend_voltage = da9211_regulator_set_suspend_voltage, + .set_suspend_enable = da9211_suspend_enable, + .set_suspend_disable = da9211_suspend_disable, + .set_suspend_mode = da9211_buck_set_mode, +}; + +#define DA9211_BUCK(_id, step, min, max, vbits, voffset, cshift) \ +{\ + .reg_desc = {\ + .name = #_id,\ + .ops = &da9211_buck_ops,\ + .type = REGULATOR_VOLTAGE,\ + .id = DA9211_ID_##_id,\ + .n_voltages = (max - min) / step + 1 + (voffset), \ + .enable_reg = DA9211_REG_BUCKA_CONT + DA9211_ID_##_id, \ + .enable_mask = 1,\ + .min_uV = (min) * 1000,\ + .uV_step = (step) * 1000,\ + .linear_min_sel = (voffset),\ + .owner = THIS_MODULE,\ + },\ + .conf = {\ + .reg = DA9211_REG_BUCKA_CONT + DA9211_ID_##_id, \ + .sel_mask = (1 << 4),\ + },\ + .volt = {\ + .reg_a = DA9211_REG_VBUCKA_A + DA9211_ID_##_id * 2, \ + .reg_b = DA9211_REG_VBUCKA_B + DA9211_ID_##_id * 2, \ + .v_mask = (1 << (vbits)) - 1,\ + },\ + .mode = {\ + .reg = DA9211_REG_BUCKA_CONF + DA9211_ID_##_id,\ + .mask = 3,\ + .shift = 0,\ + },\ + .current_shift = cshift,\ +} + +static struct da9211_regulator_info da9211_regulator_info[] = { + DA9211_BUCK(BUCKA, DA9211_STEP_MV, DA9211_MIN_MV, DA9211_MAX_MV, 7, 0, + 0), + DA9211_BUCK(BUCKB, DA9211_STEP_MV, DA9211_MIN_MV, DA9211_MAX_MV, 7, 0, + 4), +}; + +/* + * Configures regulator to be controlled either through GPIO 0, 1 or 3. + * GPIO can control regulator state and/or select the regulator register + * set A/B for voltage ramping. + */ +static int da9211_gpio_init(struct da9211_regulator *regulator, + struct regulator_config *config, + struct da9211_pdata *pdata, int id) +{ + struct da9211 *chip = regulator->da9211; + int ret = 0; + + if (pdata->buck_data[id].gpio_ren) { + + config->ena_gpio = pdata->buck_data[id].gpio_ren; + config->ena_gpio_flags = pdata->buck_data[id].ena_init_state; + config->ena_gpio_invert = 0; + + /* + * Let the regulator know that its state is controlled + * through GPI. + */ + ret = regmap_update_bits(chip->regmap, DA9211_REG_BUCKA_CONT+id, + DA9211_BUCKA_GPI_MASK, + pdata->buck_data[id].reg_ren + << DA9211_BUCKA_GPI_SHIFT); + if (ret < 0) + goto err; + } + + if (pdata->buck_data[id].gpio_rsel) { + char name[18]; + + regulator->reg_rselect = pdata->buck_data[id].reg_rsel; + /* + * GPI pin is muxed with regulator to select the + * regulator register set A/B for voltage ramping. + */ + sprintf(name, "DA9211 RSEL %d", id); + ret = devm_gpio_request_one(config->dev, + pdata->buck_data[id].gpio_rsel, + GPIOF_OUT_INIT_LOW, name); + if (ret < 0) + goto err; + + /* + * Let the regulator know that its register set A/B + * will be selected through GPI for voltage ramping. + */ + ret = regmap_update_bits(chip->regmap, + DA9211_REG_BUCKA_CONT+id, + DA9211_VBUCKA_GPI_MASK, + pdata->buck_data[id].reg_rsel + << DA9211_VBUCKA_GPI_SHIFT); + } + +err: + return ret; +} + +static inline struct da9211_regulator_info *find_regulator_info(int id) +{ + struct da9211_regulator_info *info; + int i; + + for (i = 0; i < ARRAY_SIZE(da9211_regulator_info); i++) { + info = &da9211_regulator_info[i]; + if (info->reg_desc.id == id) + return info; + } + + return NULL; +} + +static irqreturn_t da9211_irq_handler(int irq, void *data) +{ + struct da9211 *chip = data; + int reg_val, ret; + + ret = regmap_read(chip->regmap, DA9211_REG_EVENT_B, ®_val); + + if (ret < 0) + goto error_i2c; + + if (reg_val & DA9211_E_OV_CURR_A) { + regulator_notifier_call_chain(chip->rdev[0], + REGULATOR_EVENT_OVER_CURRENT, + rdev_get_drvdata(chip->rdev[0])); + ret = regmap_write(chip->regmap, DA9211_REG_EVENT_B, + DA9211_E_OV_CURR_A); + if (ret < 0) + goto error_i2c; + } + + if (reg_val & DA9211_E_OV_CURR_B) { + regulator_notifier_call_chain(chip->rdev[1], + REGULATOR_EVENT_OVER_CURRENT, + rdev_get_drvdata(chip->rdev[1])); + ret = regmap_write(chip->regmap, DA9211_REG_EVENT_B, + DA9211_E_OV_CURR_B); + if (ret < 0) + goto error_i2c; + } + + return IRQ_HANDLED; + +error_i2c: + dev_err(chip->dev, "I2C error : %d\n", ret); + return IRQ_NONE; +} + +static int da9211_regulator_init(struct da9211 *chip) +{ + struct regulator_config config = { }; + struct da9211_regulator *regulator; + int i, ret; + unsigned int data; + + ret = regmap_update_bits(chip->regmap, DA9211_REG_PAGE_CON, + DA9211_REG_PAGE_MASK, DA9211_REG_PAGE2); + + if (ret < 0) { + dev_err(chip->dev, "Failed to update PAGE reg: %d\n", ret); + goto err; + } + + ret = regmap_read(chip->regmap, DA9211_REG_CONTROL_E, &data); + + if (ret < 0) { + ret = regmap_update_bits(chip->regmap, DA9211_REG_PAGE_CON, + DA9211_REG_PAGE_MASK, DA9211_REG_PAGE0); + ret = -EINVAL; + dev_err(chip->dev, "Failed to read CONTROL_E reg: %d\n", ret); + goto err; + } + + data &= DA9211_SLAVE_SEL; + /* If configuration for 1/2 bucks is different between platform data + * and the register, driver should exit. + */ + if ((chip->pdata->num_buck == 2 && data == 0x40) + || (chip->pdata->num_buck == 1 && data == 0x00)) { + if (data == 0) + chip->num_regulator = 1; + else + chip->num_regulator = 2; + } else { + ret = regmap_update_bits(chip->regmap, DA9211_REG_PAGE_CON, + DA9211_REG_PAGE_MASK, DA9211_REG_PAGE0); + ret = -EINVAL; + dev_err(chip->dev, "Configuration is mismatched\n"); + goto err; + } + + ret = regmap_update_bits(chip->regmap, DA9211_REG_PAGE_CON, + DA9211_REG_PAGE_MASK, DA9211_REG_PAGE0); + + if (ret < 0) { + dev_err(chip->dev, "Failed to update PAGE reg: %d\n", ret); + goto err; + } + + for (i = 0; i < chip->num_regulator; i++) { + regulator = devm_kzalloc(chip->dev, + sizeof(struct da9211_regulator), + GFP_KERNEL); + if (!regulator) { + ret = -ENOMEM; + goto err_regulator; + } + + regulator->da9211 = chip; + + regulator->info = find_regulator_info(i); + if (regulator->info == NULL) { + dev_err(chip->dev, + "Invalid regulator ID specified\n"); + ret = -EINVAL; + goto err_regulator; + } + + if (chip->pdata) + config.init_data = + chip->pdata->buck_data[i].constraints; + + config.dev = chip->dev; + config.driver_data = regulator; + config.regmap = chip->regmap; + + ret = da9211_gpio_init(regulator, &config, chip->pdata, i); + + if (ret < 0) + goto err_regulator; + + regulator->rdev = regulator_register(®ulator->info->reg_desc, + &config); + if (IS_ERR(regulator->rdev)) { + dev_err(chip->dev, + "Failed to register DA9211 regulator\n"); + ret = PTR_ERR(regulator->rdev); + goto err_regulator; + } + + if (chip->chip_irq != 0) { + ret = regmap_update_bits(chip->regmap, + DA9211_REG_MASK_B, DA9211_M_OV_CURR_A << i, 1); + if (ret < 0) { + dev_err(chip->dev, + "Failed to update mask reg: %d\n", ret); + goto err_regulator; + } + } + chip->rdev[i] = regulator->rdev; + } + + return 0; + +err_regulator: + while (--i >= 0) + regulator_unregister(chip->rdev[i]); +err: + return ret; +} +/* + * I2C driver interface functions + */ +static int da9211_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct da9211 *chip; + int error, ret; + + chip = devm_kzalloc(&i2c->dev, sizeof(struct da9211), GFP_KERNEL); + if (NULL == chip) { + dev_err(&i2c->dev, + "Cannot kzalloc memory for regulator structure\n"); + return -ENOMEM; + } + + chip->dev = &i2c->dev; + chip->regmap = devm_regmap_init_i2c(i2c, &da9211_regmap_config); + if (IS_ERR(chip->regmap)) { + error = PTR_ERR(chip->regmap); + dev_err(&i2c->dev, "Failed to allocate register map: %d\n", + error); + return error; + } + + i2c_set_clientdata(i2c, chip); + + chip->pdata = i2c->dev.platform_data; + + if (!chip->pdata) { + dev_err(&i2c->dev, "No platform init data supplied\n"); + return -ENODEV; + } + + chip->chip_irq = i2c->irq; + + if (chip->chip_irq != 0) { + ret = request_threaded_irq(chip->chip_irq, NULL, + da9211_irq_handler, + IRQF_TRIGGER_LOW|IRQF_ONESHOT, + "da9211", chip); + if (ret != 0) { + dev_err(chip->dev, "Failed to request IRQ: %d\n", + chip->chip_irq); + return ret; + } + dev_info(chip->dev, "# IRQ configured [%d]\n", chip->chip_irq); + } else { + dev_warn(chip->dev, "No IRQ configured\n"); + } + + ret = da9211_regulator_init(chip); + + if (ret < 0) + dev_err(&i2c->dev, "Failed to initialize regulator: %d\n", ret); + + return ret; +} + +static int da9211_i2c_remove(struct i2c_client *i2c) +{ + struct da9211 *chip = i2c_get_clientdata(i2c); + int i; + + for (i = 0; i < chip->num_regulator; i++) + regulator_unregister(chip->rdev[i]); + + if (chip->chip_irq != 0) + free_irq(chip->chip_irq, chip); + + return 0; +} + +static const struct i2c_device_id da9211_i2c_id[] = { + {"da9211", 0}, + {}, +}; + +MODULE_DEVICE_TABLE(i2c, da9211_i2c_id); + +static struct i2c_driver da9211_regulator_driver = { + .driver = { + .name = "da9211", + .owner = THIS_MODULE, + }, + .probe = da9211_i2c_probe, + .remove = da9211_i2c_remove, + .id_table = da9211_i2c_id, +}; + +module_i2c_driver(da9211_regulator_driver); + +MODULE_AUTHOR("James Ban "); +MODULE_DESCRIPTION("Regulator device driver for Dialog DA9211"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/regulator/da9211-regulator.h b/drivers/regulator/da9211-regulator.h new file mode 100644 index 0000000..afba596 --- /dev/null +++ b/drivers/regulator/da9211-regulator.h @@ -0,0 +1,271 @@ +/* + * da9211-regulator.h - Regulator definitions for DA9211 + * Copyright (C) 2014 Dialog Semiconductor Ltd. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Library General Public License for more details. + */ + +#ifndef __DA9211_REGISTERS_H__ +#define __DA9211_REGISTERS_H__ + +/* Page selection */ +#define DA9211_REG_PAGE_CON 0x00 + +/* System Control and Event Registers */ +#define DA9211_REG_STATUS_A 0x50 +#define DA9211_REG_STATUS_B 0x51 +#define DA9211_REG_EVENT_A 0x52 +#define DA9211_REG_EVENT_B 0x53 +#define DA9211_REG_MASK_A 0x54 +#define DA9211_REG_MASK_B 0x55 +#define DA9211_REG_CONTROL_A 0x56 + +/* GPIO Control Registers */ +#define DA9211_REG_GPIO_0_1 0x58 +#define DA9211_REG_GPIO_2_3 0x59 +#define DA9211_REG_GPIO_4 0x5A + +/* Regulator Registers */ +#define DA9211_REG_BUCKA_CONT 0x5D +#define DA9211_REG_BUCKB_CONT 0x5E +#define DA9211_REG_BUCK_ILIM 0xD0 +#define DA9211_REG_BUCKA_CONF 0xD1 +#define DA9211_REG_BUCKB_CONF 0xD2 +#define DA9211_REG_BUCK_CONF 0xD3 +#define DA9211_REG_VBACKA_MAX 0xD5 +#define DA9211_REG_VBACKB_MAX 0xD6 +#define DA9211_REG_VBUCKA_A 0xD7 +#define DA9211_REG_VBUCKA_B 0xD8 +#define DA9211_REG_VBUCKB_A 0xD9 +#define DA9211_REG_VBUCKB_B 0xDA + +/* I2C Interface Settings */ +#define DA9211_REG_INTERFACE (0x105 - 0x100) + +/* BUCK Phase Selection*/ +#define DA9211_REG_CONTROL_E (0x147 - 0x100) + +/* + * Registers bits + */ +/* DA9211_REG_PAGE_CON (addr=0x00) */ +#define DA9211_REG_PAGE_SHIFT 0 +#define DA9211_REG_PAGE_MASK 0x0F +/* On I2C registers 0x00 - 0xFF */ +#define DA9211_REG_PAGE0 0 +/* On I2C registers 0x100 - 0x1FF */ +#define DA9211_REG_PAGE2 2 +#define DA9211_PAGE_WRITE_MODE 0x00 +#define DA9211_REPEAT_WRITE_MODE 0x40 +#define DA9211_PAGE_REVERT 0x80 + +/* DA9211_REG_STATUS_A (addr=0x50) */ +#define DA9211_GPI0 0x01 +#define DA9211_GPI1 0x02 +#define DA9211_GPI2 0x04 +#define DA9211_GPI3 0x08 +#define DA9211_GPI4 0x10 + +/* DA9211_REG_EVENT_A (addr=0x52) */ +#define DA9211_E_GPI0 0x01 +#define DA9211_E_GPI1 0x02 +#define DA9211_E_GPI2 0x04 +#define DA9211_E_GPI3 0x08 +#define DA9211_E_GPI4 0x10 +#define DA9211_E_UVLO_IO 0x40 + +/* DA9211_REG_EVENT_B (addr=0x53) */ +#define DA9211_E_PWRGOOD_A 0x01 +#define DA9211_E_PWRGOOD_B 0x02 +#define DA9211_E_TEMP_WARN 0x04 +#define DA9211_E_TEMP_CRIT 0x08 +#define DA9211_E_OV_CURR_A 0x10 +#define DA9211_E_OV_CURR_B 0x20 + +/* DA9211_REG_MASK_A (addr=0x54) */ +#define DA9211_M_GPI0 0x01 +#define DA9211_M_GPI1 0x02 +#define DA9211_M_GPI2 0x04 +#define DA9211_M_GPI3 0x08 +#define DA9211_M_GPI4 0x10 +#define DA9211_M_UVLO_IO 0x40 + +/* DA9211_REG_MASK_B (addr=0x55) */ +#define DA9211_M_PWRGOOD_A 0x01 +#define DA9211_M_PWRGOOD_B 0x02 +#define DA9211_M_TEMP_WARN 0x04 +#define DA9211_M_TEMP_CRIT 0x08 +#define DA9211_M_OV_CURR_A 0x10 +#define DA9211_M_OV_CURR_B 0x20 + +/* DA9211_REG_CONTROL_A (addr=0x56) */ +#define DA9211_DEBOUNCING_SHIFT 0 +#define DA9211_DEBOUNCING_MASK 0x07 +#define DA9211_SLEW_RATE_SHIFT 3 +#define DA9211_SLEW_RATE_A_MASK 0x18 +#define DA9211_SLEW_RATE_B_SHIFT 5 +#define DA9211_SLEW_RATE_B_MASK 0x60 +#define DA9211_V_LOCK 0x80 + +/* DA9211_REG_GPIO_0_1 (addr=0x58) */ +#define DA9211_GPIO0_PIN_SHIFT 0 +#define DA9211_GPIO0_PIN_MASK 0x03 +#define DA9211_GPIO0_PIN_GPI 0x00 +#define DA9211_GPIO0_PIN_GPO_OD 0x02 +#define DA9211_GPIO0_PIN_GPO 0x03 +#define DA9211_GPIO0_TYPE 0x04 +#define DA9211_GPIO0_TYPE_GPI 0x00 +#define DA9211_GPIO0_TYPE_GPO 0x04 +#define DA9211_GPIO0_MODE 0x08 +#define DA9211_GPIO1_PIN_SHIFT 4 +#define DA9211_GPIO1_PIN_MASK 0x30 +#define DA9211_GPIO1_PIN_GPI 0x00 +#define DA9211_GPIO1_PIN_VERROR 0x10 +#define DA9211_GPIO1_PIN_GPO_OD 0x20 +#define DA9211_GPIO1_PIN_GPO 0x30 +#define DA9211_GPIO1_TYPE_SHIFT 0x40 +#define DA9211_GPIO1_TYPE_GPI 0x00 +#define DA9211_GPIO1_TYPE_GPO 0x40 +#define DA9211_GPIO1_MODE 0x80 + +/* DA9211_REG_GPIO_2_3 (addr=0x59) */ +#define DA9211_GPIO2_PIN_SHIFT 0 +#define DA9211_GPIO2_PIN_MASK 0x03 +#define DA9211_GPIO2_PIN_GPI 0x00 +#define DA9211_GPIO5_PIN_BUCK_CLK 0x10 +#define DA9211_GPIO2_PIN_GPO_OD 0x02 +#define DA9211_GPIO2_PIN_GPO 0x03 +#define DA9211_GPIO2_TYPE 0x04 +#define DA9211_GPIO2_TYPE_GPI 0x00 +#define DA9211_GPIO2_TYPE_GPO 0x04 +#define DA9211_GPIO2_MODE 0x08 +#define DA9211_GPIO3_PIN_SHIFT 4 +#define DA9211_GPIO3_PIN_MASK 0x30 +#define DA9211_GPIO3_PIN_GPI 0x00 +#define DA9211_GPIO3_PIN_IERROR 0x10 +#define DA9211_GPIO3_PIN_GPO_OD 0x20 +#define DA9211_GPIO3_PIN_GPO 0x30 +#define DA9211_GPIO3_TYPE_SHIFT 0x40 +#define DA9211_GPIO3_TYPE_GPI 0x00 +#define DA9211_GPIO3_TYPE_GPO 0x40 +#define DA9211_GPIO3_MODE 0x80 + +/* DA9211_REG_GPIO_4 (addr=0x5A) */ +#define DA9211_GPIO4_PIN_SHIFT 0 +#define DA9211_GPIO4_PIN_MASK 0x03 +#define DA9211_GPIO4_PIN_GPI 0x00 +#define DA9211_GPIO4_PIN_GPO_OD 0x02 +#define DA9211_GPIO4_PIN_GPO 0x03 +#define DA9211_GPIO4_TYPE 0x04 +#define DA9211_GPIO4_TYPE_GPI 0x00 +#define DA9211_GPIO4_TYPE_GPO 0x04 +#define DA9211_GPIO4_MODE 0x08 + +/* DA9211_REG_BUCKA_CONT (addr=0x5D) */ +#define DA9211_BUCKA_EN 0x01 +#define DA9211_BUCKA_GPI_SHIFT 1 +#define DA9211_BUCKA_GPI_MASK 0x06 +#define DA9211_BUCKA_GPI_OFF 0x00 +#define DA9211_BUCKA_GPI_GPIO0 0x02 +#define DA9211_BUCKA_GPI_GPIO1 0x04 +#define DA9211_BUCKA_GPI_GPIO3 0x06 +#define DA9211_BUCKA_PD_DIS 0x08 +#define DA9211_VBUCKA_SEL 0x10 +#define DA9211_VBUCKA_SEL_A 0x00 +#define DA9211_VBUCKA_SEL_B 0x10 +#define DA9211_VBUCKA_GPI_SHIFT 5 +#define DA9211_VBUCKA_GPI_MASK 0x60 +#define DA9211_VBUCKA_GPI_OFF 0x00 +#define DA9211_VBUCKA_GPI_GPIO1 0x20 +#define DA9211_VBUCKA_GPI_GPIO2 0x40 +#define DA9211_VBUCKA_GPI_GPIO4 0x60 + +/* DA9211_REG_BUCKB_CONT (addr=0x5E) */ +#define DA9211_BUCKB_EN 0x01 +#define DA9211_BUCKB_GPI_SHIFT 1 +#define DA9211_BUCKB_GPI_MASK 0x06 +#define DA9211_BUCKB_GPI_OFF 0x00 +#define DA9211_BUCKB_GPI_GPIO0 0x02 +#define DA9211_BUCKB_GPI_GPIO1 0x04 +#define DA9211_BUCKB_GPI_GPIO3 0x06 +#define DA9211_BUCKB_PD_DIS 0x08 +#define DA9211_VBUCKB_SEL 0x10 +#define DA9211_VBUCKB_SEL_A 0x00 +#define DA9211_VBUCKB_SEL_B 0x10 +#define DA9211_VBUCKB_GPI_SHIFT 5 +#define DA9211_VBUCKB_GPI_MASK 0x60 +#define DA9211_VBUCKB_GPI_OFF 0x00 +#define DA9211_VBUCKB_GPI_GPIO1 0x20 +#define DA9211_VBUCKB_GPI_GPIO2 0x40 +#define DA9211_VBUCKB_GPI_GPIO4 0x60 + +/* DA9211_REG_BUCK_ILIM (addr=0xD0) */ +#define DA9211_BUCKA_ILIM_SHIFT 0 +#define DA9211_BUCKA_ILIM_MASK 0x0F +#define DA9211_BUCKB_ILIM_SHIFT 4 +#define DA9211_BUCKB_ILIM_MASK 0xF0 + +/* DA9211_REG_BUCKA_CONF (addr=0xD1) */ +#define DA9211_BUCKA_MODE_SHIFT 0 +#define DA9211_BUCKA_MODE_MASK 0x03 +#define DA9211_BUCKA_MODE_MANUAL 0x00 +#define DA9211_BUCKA_MODE_SLEEP 0x01 +#define DA9211_BUCKA_MODE_SYNC 0x02 +#define DA9211_BUCKA_MODE_AUTO 0x03 +#define DA9211_BUCKA_UP_CTRL_SHIFT 2 +#define DA9211_BUCKA_UP_CTRL_MASK 0x1C +#define DA9211_BUCKA_DOWN_CTRL_SHIFT 5 +#define DA9211_BUCKA_DOWN_CTRL_MASK 0xE0 + +/* DA9211_REG_BUCKB_CONF (addr=0xD2) */ +#define DA9211_BUCKB_MODE_SHIFT 0 +#define DA9211_BUCKB_MODE_MASK 0x03 +#define DA9211_BUCKB_MODE_MANUAL 0x00 +#define DA9211_BUCKB_MODE_SLEEP 0x01 +#define DA9211_BUCKB_MODE_SYNC 0x02 +#define DA9211_BUCKB_MODE_AUTO 0x03 +#define DA9211_BUCKB_UP_CTRL_SHIFT 2 +#define DA9211_BUCKB_UP_CTRL_MASK 0x1C +#define DA9211_BUCKB_DOWN_CTRL_SHIFT 5 +#define DA9211_BUCKB_DOWN_CTRL_MASK 0xE0 + +/* DA9211_REG_BUCK_CONF (addr=0xD3) */ +#define DA9211_PHASE_SEL_A_SHIFT 0 +#define DA9211_PHASE_SEL_A_MASK 0x03 +#define DA9211_PHASE_SEL_B_SHIFT 2 +#define DA9211_PHASE_SEL_B_MASK 0x04 +#define DA9211_PH_SH_EN_A_SHIFT 3 +#define DA9211_PH_SH_EN_A_MASK 0x08 +#define DA9211_PH_SH_EN_B_SHIFT 4 +#define DA9211_PH_SH_EN_B_MASK 0x10 + +/* DA9211_REG_VBUCKA_MAX (addr=0xD5) */ +#define DA9211_VBUCKA_BASE_SHIFT 0 +#define DA9211_VBUCKA_BASE_MASK 0x7F + +/* DA9211_REG_VBUCKB_MAX (addr=0xD6) */ +#define DA9211_VBUCKB_BASE_SHIFT 0 +#define DA9211_VBUCKB_BASE_MASK 0x7F + +/* DA9211_REG_VBUCKA/B_A/B (addr=0xD7/0xD8/0xD9/0xDA) */ +#define DA9211_VBUCK_SHIFT 0 +#define DA9211_VBUCK_MASK 0x7F +#define DA9211_VBUCK_BIAS 0 +#define DA9211_BUCK_SL 0x80 + +/* DA9211_REG_INTERFACE (addr=0x105) */ +#define DA9211_IF_BASE_ADDR_SHIFT 4 +#define DA9211_IF_BASE_ADDR_MASK 0xF0 + +/* DA9211_REG_CONFIG_E (addr=0x147) */ +#define DA9211_SLAVE_SEL 0x40 + +#endif /* __DA9211_REGISTERS_H__ */ diff --git a/include/linux/regulator/da9211.h b/include/linux/regulator/da9211.h new file mode 100644 index 0000000..5eddde0 --- /dev/null +++ b/include/linux/regulator/da9211.h @@ -0,0 +1,65 @@ +/* + * da9211.h - Regulator device driver for DA9211 + * Copyright (C) 2014 Dialog Semiconductor Ltd. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Library General Public License for more details. + */ + +#ifndef __LINUX_REGULATOR_DA9211_H +#define __LINUX_REGULATOR_DA9211_H + +#include + +#define DA9211_MAX_REGULATORS 2 + +enum da9211_gpio_ren_select { + DA9211_REN_NO_GPIO = 0, + DA9211_REN_GPIO_0, + DA9211_REN_GPIO_1, + DA9211_REN_GPIO_3, +}; + +enum da9211_gpio_rsel_select { + DA9211_RSEL_NO_GPIO = 0, + DA9211_RSEL_GPIO_1, + DA9211_RSEL_GPIO_2, + DA9211_RSEL_GPIO_4, +}; + +struct da9211_buck_data { + /* gpio of platform for buck eanble/disable */ + int gpio_ren; + + /* gpio of platform for buck(a/b) selection */ + int gpio_rsel; + + /* init state of gpio_ren */ + int ena_init_state; + + /* gpio of da9211 for buck eanble/disable */ + enum da9211_gpio_ren_select reg_ren; + + /* gpio of da9211 for buck(a/b) selection */ + enum da9211_gpio_rsel_select reg_rsel; + + struct regulator_init_data *constraints; +}; + +struct da9211_pdata { + /* + * Number of buck + * 1 : 4 phase 1 buck + * 2 : 2 phase 2 buck + */ + int num_buck; + struct da9211_buck_data buck_data[DA9211_MAX_REGULATORS]; +}; +#endif -- end-of-patch for regulator: DA9211 : new regulator driver V3 -- 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/