diff options
Diffstat (limited to 'drivers/gpio/gpio-tpic2810.c')
| -rw-r--r-- | drivers/gpio/gpio-tpic2810.c | 63 |
1 files changed, 15 insertions, 48 deletions
diff --git a/drivers/gpio/gpio-tpic2810.c b/drivers/gpio/gpio-tpic2810.c index 99d5a84a9129..866ff2d436d5 100644 --- a/drivers/gpio/gpio-tpic2810.c +++ b/drivers/gpio/gpio-tpic2810.c @@ -1,15 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* - * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/ - * Andrew F. Davis <afd@ti.com> - * - * 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 "as is" WITHOUT ANY WARRANTY of any - * kind, whether expressed or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License version 2 for more details. + * Copyright (C) 2015-2023 Texas Instruments Incorporated - https://www.ti.com/ + * Andrew Davis <afd@ti.com> */ #include <linux/gpio/driver.h> @@ -33,7 +25,7 @@ struct tpic2810 { struct mutex lock; }; -static void tpic2810_set(struct gpio_chip *chip, unsigned offset, int value); +static int tpic2810_set(struct gpio_chip *chip, unsigned int offset, int value); static int tpic2810_get_direction(struct gpio_chip *chip, unsigned offset) @@ -42,19 +34,11 @@ static int tpic2810_get_direction(struct gpio_chip *chip, return GPIO_LINE_DIRECTION_OUT; } -static int tpic2810_direction_input(struct gpio_chip *chip, - unsigned offset) -{ - /* This device is output only */ - return -EINVAL; -} - static int tpic2810_direction_output(struct gpio_chip *chip, unsigned offset, int value) { /* This device always output */ - tpic2810_set(chip, offset, value); - return 0; + return tpic2810_set(chip, offset, value); } static void tpic2810_set_mask_bits(struct gpio_chip *chip, u8 mask, u8 bits) @@ -76,22 +60,25 @@ static void tpic2810_set_mask_bits(struct gpio_chip *chip, u8 mask, u8 bits) mutex_unlock(&gpio->lock); } -static void tpic2810_set(struct gpio_chip *chip, unsigned offset, int value) +static int tpic2810_set(struct gpio_chip *chip, unsigned int offset, int value) { tpic2810_set_mask_bits(chip, BIT(offset), value ? BIT(offset) : 0); + + return 0; } -static void tpic2810_set_multiple(struct gpio_chip *chip, unsigned long *mask, - unsigned long *bits) +static int tpic2810_set_multiple(struct gpio_chip *chip, unsigned long *mask, + unsigned long *bits) { tpic2810_set_mask_bits(chip, *mask, *bits); + + return 0; } static const struct gpio_chip template_chip = { .label = "tpic2810", .owner = THIS_MODULE, .get_direction = tpic2810_get_direction, - .direction_input = tpic2810_direction_input, .direction_output = tpic2810_direction_output, .set = tpic2810_set, .set_multiple = tpic2810_set_multiple, @@ -106,18 +93,14 @@ static const struct of_device_id tpic2810_of_match_table[] = { }; MODULE_DEVICE_TABLE(of, tpic2810_of_match_table); -static int tpic2810_probe(struct i2c_client *client, - const struct i2c_device_id *id) +static int tpic2810_probe(struct i2c_client *client) { struct tpic2810 *gpio; - int ret; gpio = devm_kzalloc(&client->dev, sizeof(*gpio), GFP_KERNEL); if (!gpio) return -ENOMEM; - i2c_set_clientdata(client, gpio); - gpio->chip = template_chip; gpio->chip.parent = &client->dev; @@ -125,22 +108,7 @@ static int tpic2810_probe(struct i2c_client *client, mutex_init(&gpio->lock); - ret = gpiochip_add_data(&gpio->chip, gpio); - if (ret < 0) { - dev_err(&client->dev, "Unable to register gpiochip\n"); - return ret; - } - - return 0; -} - -static int tpic2810_remove(struct i2c_client *client) -{ - struct tpic2810 *gpio = i2c_get_clientdata(client); - - gpiochip_remove(&gpio->chip); - - return 0; + return devm_gpiochip_add_data(&client->dev, &gpio->chip, gpio); } static const struct i2c_device_id tpic2810_id_table[] = { @@ -155,11 +123,10 @@ static struct i2c_driver tpic2810_driver = { .of_match_table = tpic2810_of_match_table, }, .probe = tpic2810_probe, - .remove = tpic2810_remove, .id_table = tpic2810_id_table, }; module_i2c_driver(tpic2810_driver); -MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>"); +MODULE_AUTHOR("Andrew Davis <afd@ti.com>"); MODULE_DESCRIPTION("TPIC2810 8-Bit LED Driver GPIO Driver"); MODULE_LICENSE("GPL v2"); |