--- /dev/null
+/*
+ * wm831x-ldo.c -- LDO driver for the WM831x series
+ *
+ * Copyright 2009 Wolfson Microelectronics PLC.
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/slab.h>
+
+#include <linux/mfd/wm831x/core.h>
+#include <linux/mfd/wm831x/regulator.h>
+#include <linux/mfd/wm831x/pdata.h>
+
+#define WM831X_LDO_MAX_NAME 9
+
+#define WM831X_LDO_CONTROL 0
+#define WM831X_LDO_ON_CONTROL 1
+#define WM831X_LDO_SLEEP_CONTROL 2
+
+#define WM831X_ALIVE_LDO_ON_CONTROL 0
+#define WM831X_ALIVE_LDO_SLEEP_CONTROL 1
+
+struct wm831x_ldo {
+ char name[WM831X_LDO_MAX_NAME];
+ char supply_name[WM831X_LDO_MAX_NAME];
+ struct regulator_desc desc;
+ int base;
+ struct wm831x *wm831x;
+ struct regulator_dev *regulator;
+};
+
+/*
+ * Shared
+ */
+
+static irqreturn_t wm831x_ldo_uv_irq(int irq, void *data)
+{
+ struct wm831x_ldo *ldo = data;
+
+ regulator_notifier_call_chain(ldo->regulator,
+ REGULATOR_EVENT_UNDER_VOLTAGE,
+ NULL);
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * General purpose LDOs
+ */
+
+static const struct regulator_linear_range wm831x_gp_ldo_ranges[] = {
+ REGULATOR_LINEAR_RANGE(900000, 0, 14, 50000),
+ REGULATOR_LINEAR_RANGE(1700000, 15, 31, 100000),
+};
+
+static int wm831x_gp_ldo_set_suspend_voltage(struct regulator_dev *rdev,
+ int uV)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL;
+
+ sel = regulator_map_voltage_linear_range(rdev, uV, uV);
+ if (sel < 0)
+ return sel;
+
+ return wm831x_set_bits(wm831x, reg, WM831X_LDO1_ON_VSEL_MASK, sel);
+}
+
+static unsigned int wm831x_gp_ldo_get_mode(struct regulator_dev *rdev)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int ctrl_reg = ldo->base + WM831X_LDO_CONTROL;
+ int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
+ int ret;
+
+ ret = wm831x_reg_read(wm831x, on_reg);
+ if (ret < 0)
+ return ret;
+
+ if (!(ret & WM831X_LDO1_ON_MODE))
+ return REGULATOR_MODE_NORMAL;
+
+ ret = wm831x_reg_read(wm831x, ctrl_reg);
+ if (ret < 0)
+ return ret;
+
+ if (ret & WM831X_LDO1_LP_MODE)
+ return REGULATOR_MODE_STANDBY;
+ else
+ return REGULATOR_MODE_IDLE;
+}
+
+static int wm831x_gp_ldo_set_mode(struct regulator_dev *rdev,
+ unsigned int mode)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int ctrl_reg = ldo->base + WM831X_LDO_CONTROL;
+ int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
+ int ret;
+
+
+ switch (mode) {
+ case REGULATOR_MODE_NORMAL:
+ ret = wm831x_set_bits(wm831x, on_reg,
+ WM831X_LDO1_ON_MODE, 0);
+ if (ret < 0)
+ return ret;
+ break;
+
+ case REGULATOR_MODE_IDLE:
+ ret = wm831x_set_bits(wm831x, ctrl_reg,
+ WM831X_LDO1_LP_MODE, 0);
+ if (ret < 0)
+ return ret;
+
+ ret = wm831x_set_bits(wm831x, on_reg,
+ WM831X_LDO1_ON_MODE,
+ WM831X_LDO1_ON_MODE);
+ if (ret < 0)
+ return ret;
+ break;
+
+ case REGULATOR_MODE_STANDBY:
+ ret = wm831x_set_bits(wm831x, ctrl_reg,
+ WM831X_LDO1_LP_MODE,
+ WM831X_LDO1_LP_MODE);
+ if (ret < 0)
+ return ret;
+
+ ret = wm831x_set_bits(wm831x, on_reg,
+ WM831X_LDO1_ON_MODE,
+ WM831X_LDO1_ON_MODE);
+ if (ret < 0)
+ return ret;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int wm831x_gp_ldo_get_status(struct regulator_dev *rdev)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int mask = 1 << rdev_get_id(rdev);
+ int ret;
+
+ /* Is the regulator on? */
+ ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS);
+ if (ret < 0)
+ return ret;
+ if (!(ret & mask))
+ return REGULATOR_STATUS_OFF;
+
+ /* Is it reporting under voltage? */
+ ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS);
+ if (ret < 0)
+ return ret;
+ if (ret & mask)
+ return REGULATOR_STATUS_ERROR;
+
+ ret = wm831x_gp_ldo_get_mode(rdev);
+ if (ret < 0)
+ return ret;
+ else
+ return regulator_mode_to_status(ret);
+}
+
+static unsigned int wm831x_gp_ldo_get_optimum_mode(struct regulator_dev *rdev,
+ int input_uV,
+ int output_uV, int load_uA)
+{
+ if (load_uA < 20000)
+ return REGULATOR_MODE_STANDBY;
+ if (load_uA < 50000)
+ return REGULATOR_MODE_IDLE;
+ return REGULATOR_MODE_NORMAL;
+}
+
+
+static struct regulator_ops wm831x_gp_ldo_ops = {
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .set_suspend_voltage = wm831x_gp_ldo_set_suspend_voltage,
+ .get_mode = wm831x_gp_ldo_get_mode,
+ .set_mode = wm831x_gp_ldo_set_mode,
+ .get_status = wm831x_gp_ldo_get_status,
+ .get_optimum_mode = wm831x_gp_ldo_get_optimum_mode,
+ .get_bypass = regulator_get_bypass_regmap,
+ .set_bypass = regulator_set_bypass_regmap,
+
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+};
+
+static int wm831x_gp_ldo_probe(struct platform_device *pdev)
+{
+ struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+ struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
+ struct regulator_config config = { };
+ int id;
+ struct wm831x_ldo *ldo;
+ struct resource *res;
+ int ret, irq;
+
+ if (pdata && pdata->wm831x_num)
+ id = (pdata->wm831x_num * 10) + 1;
+ else
+ id = 0;
+ id = pdev->id - id;
+
+ dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
+
+ ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL);
+ if (!ldo)
+ return -ENOMEM;
+
+ ldo->wm831x = wm831x;
+
+ res = platform_get_resource(pdev, IORESOURCE_REG, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "No REG resource\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ ldo->base = res->start;
+
+ snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1);
+ ldo->desc.name = ldo->name;
+
+ snprintf(ldo->supply_name, sizeof(ldo->supply_name),
+ "LDO%dVDD", id + 1);
+ ldo->desc.supply_name = ldo->supply_name;
+
+ ldo->desc.id = id;
+ ldo->desc.type = REGULATOR_VOLTAGE;
+ ldo->desc.n_voltages = 32;
+ ldo->desc.ops = &wm831x_gp_ldo_ops;
+ ldo->desc.owner = THIS_MODULE;
+ ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL;
+ ldo->desc.vsel_mask = WM831X_LDO1_ON_VSEL_MASK;
+ ldo->desc.enable_reg = WM831X_LDO_ENABLE;
+ ldo->desc.enable_mask = 1 << id;
+ ldo->desc.bypass_reg = ldo->base;
+ ldo->desc.bypass_mask = WM831X_LDO1_SWI;
+ ldo->desc.linear_ranges = wm831x_gp_ldo_ranges;
+ ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_gp_ldo_ranges);
+
+ config.dev = pdev->dev.parent;
+ if (pdata)
+ config.init_data = pdata->ldo[id];
+ config.driver_data = ldo;
+ config.regmap = wm831x->regmap;
+
+ ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc,
+ &config);
+ if (IS_ERR(ldo->regulator)) {
+ ret = PTR_ERR(ldo->regulator);
+ dev_err(wm831x->dev, "Failed to register LDO%d: %d\n",
+ id + 1, ret);
+ goto err;
+ }
+
+ irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV"));
+ ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+ wm831x_ldo_uv_irq,
+ IRQF_TRIGGER_RISING, ldo->name,
+ ldo);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
+ irq, ret);
+ goto err;
+ }
+
+ platform_set_drvdata(pdev, ldo);
+
+ return 0;
+
+err:
+ return ret;
+}
+
+static struct platform_driver wm831x_gp_ldo_driver = {
+ .probe = wm831x_gp_ldo_probe,
+ .driver = {
+ .name = "wm831x-ldo",
+ },
+};
+
+/*
+ * Analogue LDOs
+ */
+
+static const struct regulator_linear_range wm831x_aldo_ranges[] = {
+ REGULATOR_LINEAR_RANGE(1000000, 0, 12, 50000),
+ REGULATOR_LINEAR_RANGE(1700000, 13, 31, 100000),
+};
+
+static int wm831x_aldo_set_suspend_voltage(struct regulator_dev *rdev,
+ int uV)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int sel, reg = ldo->base + WM831X_LDO_SLEEP_CONTROL;
+
+ sel = regulator_map_voltage_linear_range(rdev, uV, uV);
+ if (sel < 0)
+ return sel;
+
+ return wm831x_set_bits(wm831x, reg, WM831X_LDO7_ON_VSEL_MASK, sel);
+}
+
+static unsigned int wm831x_aldo_get_mode(struct regulator_dev *rdev)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
+ int ret;
+
+ ret = wm831x_reg_read(wm831x, on_reg);
+ if (ret < 0)
+ return 0;
+
+ if (ret & WM831X_LDO7_ON_MODE)
+ return REGULATOR_MODE_IDLE;
+ else
+ return REGULATOR_MODE_NORMAL;
+}
+
+static int wm831x_aldo_set_mode(struct regulator_dev *rdev,
+ unsigned int mode)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
+ int ret;
+
+
+ switch (mode) {
+ case REGULATOR_MODE_NORMAL:
+ ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO7_ON_MODE, 0);
+ if (ret < 0)
+ return ret;
+ break;
+
+ case REGULATOR_MODE_IDLE:
+ ret = wm831x_set_bits(wm831x, on_reg, WM831X_LDO7_ON_MODE,
+ WM831X_LDO7_ON_MODE);
+ if (ret < 0)
+ return ret;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int wm831x_aldo_get_status(struct regulator_dev *rdev)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int mask = 1 << rdev_get_id(rdev);
+ int ret;
+
+ /* Is the regulator on? */
+ ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS);
+ if (ret < 0)
+ return ret;
+ if (!(ret & mask))
+ return REGULATOR_STATUS_OFF;
+
+ /* Is it reporting under voltage? */
+ ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS);
+ if (ret < 0)
+ return ret;
+ if (ret & mask)
+ return REGULATOR_STATUS_ERROR;
+
+ ret = wm831x_aldo_get_mode(rdev);
+ if (ret < 0)
+ return ret;
+ else
+ return regulator_mode_to_status(ret);
+}
+
+static struct regulator_ops wm831x_aldo_ops = {
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .set_suspend_voltage = wm831x_aldo_set_suspend_voltage,
+ .get_mode = wm831x_aldo_get_mode,
+ .set_mode = wm831x_aldo_set_mode,
+ .get_status = wm831x_aldo_get_status,
+ .set_bypass = regulator_set_bypass_regmap,
+ .get_bypass = regulator_get_bypass_regmap,
+
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+};
+
+static int wm831x_aldo_probe(struct platform_device *pdev)
+{
+ struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+ struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
+ struct regulator_config config = { };
+ int id;
+ struct wm831x_ldo *ldo;
+ struct resource *res;
+ int ret, irq;
+
+ if (pdata && pdata->wm831x_num)
+ id = (pdata->wm831x_num * 10) + 1;
+ else
+ id = 0;
+ id = pdev->id - id;
+
+ dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
+
+ ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL);
+ if (!ldo)
+ return -ENOMEM;
+
+ ldo->wm831x = wm831x;
+
+ res = platform_get_resource(pdev, IORESOURCE_REG, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "No REG resource\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ ldo->base = res->start;
+
+ snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1);
+ ldo->desc.name = ldo->name;
+
+ snprintf(ldo->supply_name, sizeof(ldo->supply_name),
+ "LDO%dVDD", id + 1);
+ ldo->desc.supply_name = ldo->supply_name;
+
+ ldo->desc.id = id;
+ ldo->desc.type = REGULATOR_VOLTAGE;
+ ldo->desc.n_voltages = 32;
+ ldo->desc.linear_ranges = wm831x_aldo_ranges;
+ ldo->desc.n_linear_ranges = ARRAY_SIZE(wm831x_aldo_ranges);
+ ldo->desc.ops = &wm831x_aldo_ops;
+ ldo->desc.owner = THIS_MODULE;
+ ldo->desc.vsel_reg = ldo->base + WM831X_LDO_ON_CONTROL;
+ ldo->desc.vsel_mask = WM831X_LDO7_ON_VSEL_MASK;
+ ldo->desc.enable_reg = WM831X_LDO_ENABLE;
+ ldo->desc.enable_mask = 1 << id;
+ ldo->desc.bypass_reg = ldo->base;
+ ldo->desc.bypass_mask = WM831X_LDO7_SWI;
+
+ config.dev = pdev->dev.parent;
+ if (pdata)
+ config.init_data = pdata->ldo[id];
+ config.driver_data = ldo;
+ config.regmap = wm831x->regmap;
+
+ ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc,
+ &config);
+ if (IS_ERR(ldo->regulator)) {
+ ret = PTR_ERR(ldo->regulator);
+ dev_err(wm831x->dev, "Failed to register LDO%d: %d\n",
+ id + 1, ret);
+ goto err;
+ }
+
+ irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV"));
+ ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+ wm831x_ldo_uv_irq,
+ IRQF_TRIGGER_RISING, ldo->name, ldo);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
+ irq, ret);
+ goto err;
+ }
+
+ platform_set_drvdata(pdev, ldo);
+
+ return 0;
+
+err:
+ return ret;
+}
+
+static struct platform_driver wm831x_aldo_driver = {
+ .probe = wm831x_aldo_probe,
+ .driver = {
+ .name = "wm831x-aldo",
+ },
+};
+
+/*
+ * Alive LDO
+ */
+
+#define WM831X_ALIVE_LDO_MAX_SELECTOR 0xf
+
+static int wm831x_alive_ldo_set_suspend_voltage(struct regulator_dev *rdev,
+ int uV)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int sel, reg = ldo->base + WM831X_ALIVE_LDO_SLEEP_CONTROL;
+
+ sel = regulator_map_voltage_linear(rdev, uV, uV);
+ if (sel < 0)
+ return sel;
+
+ return wm831x_set_bits(wm831x, reg, WM831X_LDO11_ON_VSEL_MASK, sel);
+}
+
+static int wm831x_alive_ldo_get_status(struct regulator_dev *rdev)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int mask = 1 << rdev_get_id(rdev);
+ int ret;
+
+ /* Is the regulator on? */
+ ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS);
+ if (ret < 0)
+ return ret;
+ if (ret & mask)
+ return REGULATOR_STATUS_ON;
+ else
+ return REGULATOR_STATUS_OFF;
+}
+
+static struct regulator_ops wm831x_alive_ldo_ops = {
+ .list_voltage = regulator_list_voltage_linear,
+ .map_voltage = regulator_map_voltage_linear,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .set_suspend_voltage = wm831x_alive_ldo_set_suspend_voltage,
+ .get_status = wm831x_alive_ldo_get_status,
+
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+};
+
+static int wm831x_alive_ldo_probe(struct platform_device *pdev)
+{
+ struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+ struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
+ struct regulator_config config = { };
+ int id;
+ struct wm831x_ldo *ldo;
+ struct resource *res;
+ int ret;
+
+ if (pdata && pdata->wm831x_num)
+ id = (pdata->wm831x_num * 10) + 1;
+ else
+ id = 0;
+ id = pdev->id - id;
+
+
+ dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
+
+ ldo = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_ldo), GFP_KERNEL);
+ if (!ldo)
+ return -ENOMEM;
+
+ ldo->wm831x = wm831x;
+
+ res = platform_get_resource(pdev, IORESOURCE_REG, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "No REG resource\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ ldo->base = res->start;
+
+ snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1);
+ ldo->desc.name = ldo->name;
+
+ snprintf(ldo->supply_name, sizeof(ldo->supply_name),
+ "LDO%dVDD", id + 1);
+ ldo->desc.supply_name = ldo->supply_name;
+
+ ldo->desc.id = id;
+ ldo->desc.type = REGULATOR_VOLTAGE;
+ ldo->desc.n_voltages = WM831X_ALIVE_LDO_MAX_SELECTOR + 1;
+ ldo->desc.ops = &wm831x_alive_ldo_ops;
+ ldo->desc.owner = THIS_MODULE;
+ ldo->desc.vsel_reg = ldo->base + WM831X_ALIVE_LDO_ON_CONTROL;
+ ldo->desc.vsel_mask = WM831X_LDO11_ON_VSEL_MASK;
+ ldo->desc.enable_reg = WM831X_LDO_ENABLE;
+ ldo->desc.enable_mask = 1 << id;
+ ldo->desc.min_uV = 800000;
+ ldo->desc.uV_step = 50000;
+ ldo->desc.enable_time = 1000;
+
+ config.dev = pdev->dev.parent;
+ if (pdata)
+ config.init_data = pdata->ldo[id];
+ config.driver_data = ldo;
+ config.regmap = wm831x->regmap;
+
+ ldo->regulator = devm_regulator_register(&pdev->dev, &ldo->desc,
+ &config);
+ if (IS_ERR(ldo->regulator)) {
+ ret = PTR_ERR(ldo->regulator);
+ dev_err(wm831x->dev, "Failed to register LDO%d: %d\n",
+ id + 1, ret);
+ goto err;
+ }
+
+ platform_set_drvdata(pdev, ldo);
+
+ return 0;
+
+err:
+ return ret;
+}
+
+static struct platform_driver wm831x_alive_ldo_driver = {
+ .probe = wm831x_alive_ldo_probe,
+ .driver = {
+ .name = "wm831x-alive-ldo",
+ },
+};
+
+static int __init wm831x_ldo_init(void)
+{
+ int ret;
+
+ ret = platform_driver_register(&wm831x_gp_ldo_driver);
+ if (ret != 0)
+ pr_err("Failed to register WM831x GP LDO driver: %d\n", ret);
+
+ ret = platform_driver_register(&wm831x_aldo_driver);
+ if (ret != 0)
+ pr_err("Failed to register WM831x ALDO driver: %d\n", ret);
+
+ ret = platform_driver_register(&wm831x_alive_ldo_driver);
+ if (ret != 0)
+ pr_err("Failed to register WM831x alive LDO driver: %d\n",
+ ret);
+
+ return 0;
+}
+subsys_initcall(wm831x_ldo_init);
+
+static void __exit wm831x_ldo_exit(void)
+{
+ platform_driver_unregister(&wm831x_alive_ldo_driver);
+ platform_driver_unregister(&wm831x_aldo_driver);
+ platform_driver_unregister(&wm831x_gp_ldo_driver);
+}
+module_exit(wm831x_ldo_exit);
+
+/* Module information */
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_DESCRIPTION("WM831x LDO driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:wm831x-ldo");
+MODULE_ALIAS("platform:wm831x-aldo");
+MODULE_ALIAS("platform:wm831x-aliveldo");
Code Review / kvmfornfv.git / blobdiff