diff options
Diffstat (limited to 'drivers/regulator/ad5398.c')
| -rw-r--r-- | drivers/regulator/ad5398.c | 38 |
1 files changed, 22 insertions, 16 deletions
diff --git a/drivers/regulator/ad5398.c b/drivers/regulator/ad5398.c index 11c1f880b7bb..eb2a666a45cb 100644 --- a/drivers/regulator/ad5398.c +++ b/drivers/regulator/ad5398.c @@ -1,11 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Voltage and current regulation for AD5398 and AD5821 * * Copyright 2010 Analog Devices Inc. * * Enter bugs at http://blackfin.uclinux.org/ - * - * Licensed under the GPL-2 or later. */ #include <linux/module.h> @@ -15,8 +14,9 @@ #include <linux/platform_device.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> +#include <linux/regulator/of_regulator.h> -#define AD5398_CURRENT_EN_MASK 0x8000 +#define AD5398_SW_POWER_DOWN BIT(15) struct ad5398_chip_info { struct i2c_client *client; @@ -114,7 +114,7 @@ static int ad5398_set_current_limit(struct regulator_dev *rdev, int min_uA, int /* prepare register data */ selector = (selector << chip->current_offset) & chip->current_mask; - data = (unsigned short)selector | (data & AD5398_CURRENT_EN_MASK); + data = (unsigned short)selector | (data & AD5398_SW_POWER_DOWN); /* write the new current value back as well as enable bit */ ret = ad5398_write_reg(client, data); @@ -133,10 +133,10 @@ static int ad5398_is_enabled(struct regulator_dev *rdev) if (ret < 0) return ret; - if (data & AD5398_CURRENT_EN_MASK) - return 1; - else + if (data & AD5398_SW_POWER_DOWN) return 0; + else + return 1; } static int ad5398_enable(struct regulator_dev *rdev) @@ -150,10 +150,10 @@ static int ad5398_enable(struct regulator_dev *rdev) if (ret < 0) return ret; - if (data & AD5398_CURRENT_EN_MASK) + if (!(data & AD5398_SW_POWER_DOWN)) return 0; - data |= AD5398_CURRENT_EN_MASK; + data &= ~AD5398_SW_POWER_DOWN; ret = ad5398_write_reg(client, data); @@ -171,10 +171,10 @@ static int ad5398_disable(struct regulator_dev *rdev) if (ret < 0) return ret; - if (!(data & AD5398_CURRENT_EN_MASK)) + if (data & AD5398_SW_POWER_DOWN) return 0; - data &= ~AD5398_CURRENT_EN_MASK; + data |= AD5398_SW_POWER_DOWN; ret = ad5398_write_reg(client, data); @@ -213,24 +213,29 @@ static const struct i2c_device_id ad5398_id[] = { }; MODULE_DEVICE_TABLE(i2c, ad5398_id); -static int ad5398_probe(struct i2c_client *client, - const struct i2c_device_id *id) +static int ad5398_probe(struct i2c_client *client) { + const struct i2c_device_id *id = i2c_client_get_device_id(client); struct regulator_init_data *init_data = dev_get_platdata(&client->dev); struct regulator_config config = { }; struct ad5398_chip_info *chip; const struct ad5398_current_data_format *df = (struct ad5398_current_data_format *)id->driver_data; - if (!init_data) - return -EINVAL; - chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL); if (!chip) return -ENOMEM; config.dev = &client->dev; + if (client->dev.of_node) + init_data = of_get_regulator_init_data(&client->dev, + client->dev.of_node, + &ad5398_reg); + if (!init_data) + return -EINVAL; + config.init_data = init_data; + config.of_node = client->dev.of_node; config.driver_data = chip; chip->client = client; @@ -258,6 +263,7 @@ static struct i2c_driver ad5398_driver = { .probe = ad5398_probe, .driver = { .name = "ad5398", + .probe_type = PROBE_PREFER_ASYNCHRONOUS, }, .id_table = ad5398_id, }; |