diff options
Diffstat (limited to 'drivers/regulator/vexpress.c')
| -rw-r--r-- | drivers/regulator/vexpress.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/drivers/regulator/vexpress.c b/drivers/regulator/vexpress.c deleted file mode 100644 index 4668c7f8133d..000000000000 --- a/drivers/regulator/vexpress.c +++ /dev/null @@ -1,147 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * 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. - * - * Copyright (C) 2012 ARM Limited - */ - -#define DRVNAME "vexpress-regulator" -#define pr_fmt(fmt) DRVNAME ": " fmt - -#include <linux/device.h> -#include <linux/err.h> -#include <linux/module.h> -#include <linux/of_device.h> -#include <linux/regulator/driver.h> -#include <linux/regulator/machine.h> -#include <linux/regulator/of_regulator.h> -#include <linux/vexpress.h> - -struct vexpress_regulator { - struct regulator_desc desc; - struct regulator_dev *regdev; - struct vexpress_config_func *func; -}; - -static int vexpress_regulator_get_voltage(struct regulator_dev *regdev) -{ - struct vexpress_regulator *reg = rdev_get_drvdata(regdev); - u32 uV; - int err = vexpress_config_read(reg->func, 0, &uV); - - return err ? err : uV; -} - -static int vexpress_regulator_set_voltage(struct regulator_dev *regdev, - int min_uV, int max_uV, unsigned *selector) -{ - struct vexpress_regulator *reg = rdev_get_drvdata(regdev); - - return vexpress_config_write(reg->func, 0, min_uV); -} - -static struct regulator_ops vexpress_regulator_ops_ro = { - .get_voltage = vexpress_regulator_get_voltage, -}; - -static struct regulator_ops vexpress_regulator_ops = { - .get_voltage = vexpress_regulator_get_voltage, - .set_voltage = vexpress_regulator_set_voltage, -}; - -static int vexpress_regulator_probe(struct platform_device *pdev) -{ - int err; - struct vexpress_regulator *reg; - struct regulator_init_data *init_data; - struct regulator_config config = { }; - - reg = devm_kzalloc(&pdev->dev, sizeof(*reg), GFP_KERNEL); - if (!reg) { - err = -ENOMEM; - goto error_kzalloc; - } - - reg->func = vexpress_config_func_get_by_dev(&pdev->dev); - if (!reg->func) { - err = -ENXIO; - goto error_get_func; - } - - reg->desc.name = dev_name(&pdev->dev); - reg->desc.type = REGULATOR_VOLTAGE; - reg->desc.owner = THIS_MODULE; - reg->desc.continuous_voltage_range = true; - - init_data = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node); - if (!init_data) { - err = -EINVAL; - goto error_get_regulator_init_data; - } - - init_data->constraints.apply_uV = 0; - if (init_data->constraints.min_uV && init_data->constraints.max_uV) - reg->desc.ops = &vexpress_regulator_ops; - else - reg->desc.ops = &vexpress_regulator_ops_ro; - - config.dev = &pdev->dev; - config.init_data = init_data; - config.driver_data = reg; - config.of_node = pdev->dev.of_node; - - reg->regdev = regulator_register(®->desc, &config); - if (IS_ERR(reg->regdev)) { - err = PTR_ERR(reg->regdev); - goto error_regulator_register; - } - - platform_set_drvdata(pdev, reg); - - return 0; - -error_regulator_register: -error_get_regulator_init_data: - vexpress_config_func_put(reg->func); -error_get_func: -error_kzalloc: - return err; -} - -static int vexpress_regulator_remove(struct platform_device *pdev) -{ - struct vexpress_regulator *reg = platform_get_drvdata(pdev); - - vexpress_config_func_put(reg->func); - regulator_unregister(reg->regdev); - - return 0; -} - -static struct of_device_id vexpress_regulator_of_match[] = { - { .compatible = "arm,vexpress-volt", }, - { } -}; - -static struct platform_driver vexpress_regulator_driver = { - .probe = vexpress_regulator_probe, - .remove = vexpress_regulator_remove, - .driver = { - .name = DRVNAME, - .owner = THIS_MODULE, - .of_match_table = vexpress_regulator_of_match, - }, -}; - -module_platform_driver(vexpress_regulator_driver); - -MODULE_AUTHOR("Pawel Moll <pawel.moll@arm.com>"); -MODULE_DESCRIPTION("Versatile Express regulator"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:vexpress-regulator"); |