1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) 2015-2023 Texas Instruments Incorporated - https://www.ti.com/
4  *	Andrew Davis <afd@ti.com>
15  * struct tpic2810 - GPIO driver data
28 static void tpic2810_set(struct gpio_chip *chip, unsigned offset, int value);
31 				  unsigned offset)  in tpic2810_get_direction()  argument
38 				    unsigned offset)  in tpic2810_direction_input()  argument
41 	return -EINVAL;  in tpic2810_direction_input()
45 				     unsigned offset, int value)  in tpic2810_direction_output()  argument
48 	tpic2810_set(chip, offset, value);  in tpic2810_direction_output()
58 	mutex_lock(&gpio->lock);  in tpic2810_set_mask_bits()
60 	buffer = gpio->buffer & ~mask;  in tpic2810_set_mask_bits()
63 	err = i2c_smbus_write_byte_data(gpio->client, TPIC2810_WS_COMMAND,  in tpic2810_set_mask_bits()
66 		gpio->buffer = buffer;  in tpic2810_set_mask_bits()
68 	mutex_unlock(&gpio->lock);  in tpic2810_set_mask_bits()
71 static void tpic2810_set(struct gpio_chip *chip, unsigned offset, int value)  in tpic2810_set()  argument
73 	tpic2810_set_mask_bits(chip, BIT(offset), value ? BIT(offset) : 0);  in tpic2810_set()
90 	.base			= -1,
105 	gpio = devm_kzalloc(&client->dev, sizeof(*gpio), GFP_KERNEL);  in tpic2810_probe()
107 		return -ENOMEM;  in tpic2810_probe()
109 	gpio->chip = template_chip;  in tpic2810_probe()
110 	gpio->chip.parent = &client->dev;  in tpic2810_probe()
112 	gpio->client = client;  in tpic2810_probe()
114 	mutex_init(&gpio->lock);  in tpic2810_probe()
116 	return devm_gpiochip_add_data(&client->dev, &gpio->chip, gpio);  in tpic2810_probe()
135 MODULE_AUTHOR("Andrew Davis <afd@ti.com>");
136 MODULE_DESCRIPTION("TPIC2810 8-Bit LED Driver GPIO Driver");