34 static int __gen_74x164_write_config(struct gen_74x164_chip *chip)  in __gen_74x164_write_config()  argument
36 	struct spi_device *spi = to_spi_device(chip->gpio_chip.dev);  in __gen_74x164_write_config()
41 	msg_buf = kzalloc(chip->registers * sizeof(struct spi_transfer),  in __gen_74x164_write_config()
56 	for (i = chip->registers - 1; i >= 0; i--) {  in __gen_74x164_write_config()
57 		msg_buf[i].tx_buf = chip->buffer + i;  in __gen_74x164_write_config()
71 	struct gen_74x164_chip *chip = gpio_to_74x164_chip(gc);  in gen_74x164_get_value()  local
76 	mutex_lock(&chip->lock);  in gen_74x164_get_value()
77 	ret = (chip->buffer[bank] >> pin) & 0x1;  in gen_74x164_get_value()
78 	mutex_unlock(&chip->lock);  in gen_74x164_get_value()
86 	struct gen_74x164_chip *chip = gpio_to_74x164_chip(gc);  in gen_74x164_set_value()  local
90 	mutex_lock(&chip->lock);  in gen_74x164_set_value()
92 		chip->buffer[bank] |= (1 << pin);  in gen_74x164_set_value()
94 		chip->buffer[bank] &= ~(1 << pin);  in gen_74x164_set_value()
96 	__gen_74x164_write_config(chip);  in gen_74x164_set_value()
97 	mutex_unlock(&chip->lock);  in gen_74x164_set_value()
109 	struct gen_74x164_chip *chip;  in gen_74x164_probe()  local
121 	chip = devm_kzalloc(&spi->dev, sizeof(*chip), GFP_KERNEL);  in gen_74x164_probe()
122 	if (!chip)  in gen_74x164_probe()
125 	spi_set_drvdata(spi, chip);  in gen_74x164_probe()
127 	chip->gpio_chip.label = spi->modalias;  in gen_74x164_probe()
128 	chip->gpio_chip.direction_output = gen_74x164_direction_output;  in gen_74x164_probe()
129 	chip->gpio_chip.get = gen_74x164_get_value;  in gen_74x164_probe()
130 	chip->gpio_chip.set = gen_74x164_set_value;  in gen_74x164_probe()
131 	chip->gpio_chip.base = -1;  in gen_74x164_probe()
134 				 &chip->registers)) {  in gen_74x164_probe()
140 	chip->gpio_chip.ngpio = GEN_74X164_NUMBER_GPIOS * chip->registers;  in gen_74x164_probe()
141 	chip->buffer = devm_kzalloc(&spi->dev, chip->registers, GFP_KERNEL);  in gen_74x164_probe()
142 	if (!chip->buffer)  in gen_74x164_probe()
145 	chip->gpio_chip.can_sleep = true;  in gen_74x164_probe()
146 	chip->gpio_chip.dev = &spi->dev;  in gen_74x164_probe()
147 	chip->gpio_chip.owner = THIS_MODULE;  in gen_74x164_probe()
149 	mutex_init(&chip->lock);  in gen_74x164_probe()
151 	ret = __gen_74x164_write_config(chip);  in gen_74x164_probe()
157 	ret = gpiochip_add(&chip->gpio_chip);  in gen_74x164_probe()
162 	mutex_destroy(&chip->lock);  in gen_74x164_probe()
169 	struct gen_74x164_chip *chip = spi_get_drvdata(spi);  in gen_74x164_remove()  local
171 	gpiochip_remove(&chip->gpio_chip);  in gen_74x164_remove()
172 	mutex_destroy(&chip->lock);  in gen_74x164_remove()