drivers/gpio/gpio-tn48m.c

1 // SPDX-License-Identifier: GPL-2.0-only
3  * Delta TN48M CPLD GPIO driver
49 	if (!pdev->dev.parent)  in tn48m_gpio_probe()
50 		return -ENODEV;  in tn48m_gpio_probe()
52 	gpio_config = device_get_match_data(&pdev->dev);  in tn48m_gpio_probe()
54 		return -ENODEV;  in tn48m_gpio_probe()
56 	ret = device_property_read_u32(&pdev->dev, "reg", &base);  in tn48m_gpio_probe()
60 	regmap = dev_get_regmap(pdev->dev.parent, NULL);  in tn48m_gpio_probe()
62 		return -ENODEV;  in tn48m_gpio_probe()
65 	config.parent = &pdev->dev;  in tn48m_gpio_probe()
66 	config.ngpio = gpio_config->ngpio;  in tn48m_gpio_probe()
67 	config.ngpio_per_reg = gpio_config->ngpio_per_reg;  in tn48m_gpio_probe()
68 	switch (gpio_config->type) {  in tn48m_gpio_probe()
76 		return -EINVAL;  in tn48m_gpio_probe()
79 	return PTR_ERR_OR_ZERO(devm_gpio_regmap_register(&pdev->dev, &config));  in tn48m_gpio_probe()
83 	{ .compatible = "delta,tn48m-gpo", .data = &tn48m_gpo_config },
84 	{ .compatible = "delta,tn48m-gpi", .data = &tn48m_gpi_config },
91 		.name = "delta-tn48m-gpio",
99 MODULE_DESCRIPTION("Delta TN48M CPLD GPIO driver");