diff options
Diffstat (limited to 'drivers/mfd/tps6105x.c')
| -rw-r--r-- | drivers/mfd/tps6105x.c | 50 |
1 files changed, 37 insertions, 13 deletions
diff --git a/drivers/mfd/tps6105x.c b/drivers/mfd/tps6105x.c index 187848c93779..e2f6858d101e 100644 --- a/drivers/mfd/tps6105x.c +++ b/drivers/mfd/tps6105x.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Core driver for TPS61050/61052 boost converters, used for while LED * driving, audio power amplification, white LED flash, and generic @@ -9,8 +10,6 @@ * Written on behalf of Linaro for ST-Ericsson * * Author: Linus Walleij <linus.walleij@linaro.org> - * - * License terms: GNU General Public License (GPL) version 2 */ #include <linux/module.h> @@ -24,7 +23,7 @@ #include <linux/mfd/core.h> #include <linux/mfd/tps6105x.h> -static struct regmap_config tps6105x_regmap_config = { +static const struct regmap_config tps6105x_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = TPS6105X_REG_3, @@ -92,17 +91,44 @@ static int tps6105x_add_device(struct tps6105x *tps6105x, PLATFORM_DEVID_AUTO, cell, 1, NULL, 0, NULL); } -static int tps6105x_probe(struct i2c_client *client, - const struct i2c_device_id *id) +static struct tps6105x_platform_data *tps6105x_parse_dt(struct device *dev) +{ + struct device_node *np = dev->of_node; + struct tps6105x_platform_data *pdata; + struct device_node *child; + + if (!np) + return ERR_PTR(-EINVAL); + if (of_get_available_child_count(np) > 1) { + dev_err(dev, "cannot support multiple operational modes"); + return ERR_PTR(-EINVAL); + } + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return ERR_PTR(-ENOMEM); + pdata->mode = TPS6105X_MODE_SHUTDOWN; + for_each_available_child_of_node(np, child) { + if (child->name && !of_node_cmp(child->name, "regulator")) + pdata->mode = TPS6105X_MODE_VOLTAGE; + else if (child->name && !of_node_cmp(child->name, "led")) + pdata->mode = TPS6105X_MODE_TORCH; + } + + return pdata; +} + +static int tps6105x_probe(struct i2c_client *client) { struct tps6105x *tps6105x; struct tps6105x_platform_data *pdata; int ret; pdata = dev_get_platdata(&client->dev); - if (!pdata) { - dev_err(&client->dev, "missing platform data\n"); - return -ENODEV; + if (!pdata) + pdata = tps6105x_parse_dt(&client->dev); + if (IS_ERR(pdata)) { + dev_err(&client->dev, "No platform data or DT found"); + return PTR_ERR(pdata); } tps6105x = devm_kmalloc(&client->dev, sizeof(*tps6105x), GFP_KERNEL); @@ -152,7 +178,7 @@ static int tps6105x_probe(struct i2c_client *client, return ret; } -static int tps6105x_remove(struct i2c_client *client) +static void tps6105x_remove(struct i2c_client *client) { struct tps6105x *tps6105x = i2c_get_clientdata(client); @@ -162,13 +188,11 @@ static int tps6105x_remove(struct i2c_client *client) regmap_update_bits(tps6105x->regmap, TPS6105X_REG_0, TPS6105X_REG0_MODE_MASK, TPS6105X_MODE_SHUTDOWN << TPS6105X_REG0_MODE_SHIFT); - - return 0; } static const struct i2c_device_id tps6105x_id[] = { - { "tps61050", 0 }, - { "tps61052", 0 }, + { "tps61050" }, + { "tps61052" }, { } }; MODULE_DEVICE_TABLE(i2c, tps6105x_id); |