1 // SPDX-License-Identifier: GPL-2.0-only
3  * MC33880 high-side/low-side switch GPIO driver
8  * Freescale MC33880 high-side/low-side switch
45 	return spi_write(mc->spi, &mc->port_config, sizeof(mc->port_config));  in mc33880_write_config()
52 		mc->port_config |= 1 << offset;  in __mc33880_set()
54 		mc->port_config &= ~(1 << offset);  in __mc33880_set()
64 	mutex_lock(&mc->lock);  in mc33880_set()
68 	mutex_unlock(&mc->lock);  in mc33880_set()
77 	pdata = dev_get_platdata(&spi->dev);  in mc33880_probe()
78 	if (!pdata || !pdata->base) {  in mc33880_probe()
79 		dev_dbg(&spi->dev, "incorrect or missing platform data\n");  in mc33880_probe()
80 		return -EINVAL;  in mc33880_probe()
86 	spi->bits_per_word = 8;  in mc33880_probe()
92 	mc = devm_kzalloc(&spi->dev, sizeof(struct mc33880), GFP_KERNEL);  in mc33880_probe()
94 		return -ENOMEM;  in mc33880_probe()
96 	mutex_init(&mc->lock);  in mc33880_probe()
100 	mc->spi = spi;  in mc33880_probe()
102 	mc->chip.label = DRIVER_NAME,  in mc33880_probe()
103 	mc->chip.set = mc33880_set;  in mc33880_probe()
104 	mc->chip.base = pdata->base;  in mc33880_probe()
105 	mc->chip.ngpio = PIN_NUMBER;  in mc33880_probe()
106 	mc->chip.can_sleep = true;  in mc33880_probe()
107 	mc->chip.parent = &spi->dev;  in mc33880_probe()
108 	mc->chip.owner = THIS_MODULE;  in mc33880_probe()
110 	mc->port_config = 0x00;  in mc33880_probe()
116 	mc->port_config = 0x00;  in mc33880_probe()
121 		dev_err(&spi->dev, "Failed writing to " DRIVER_NAME ": %d\n",  in mc33880_probe()
126 	ret = gpiochip_add_data(&mc->chip, mc);  in mc33880_probe()
133 	mutex_destroy(&mc->lock);  in mc33880_probe()
143 	gpiochip_remove(&mc->chip);  in mc33880_remove()
144 	mutex_destroy(&mc->lock);  in mc33880_remove()
170 MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>");