drivers/ata/pata_of_platform.c

1 // SPDX-License-Identifier: GPL-2.0-only
3  * OF-platform PATA driver
25 	struct device_node *dn = ofdev->dev.of_node;  in pata_of_platform_probe()
37 		dev_err(&ofdev->dev, "can't get IO address from "  in pata_of_platform_probe()
39 		return -EINVAL;  in pata_of_platform_probe()
44 		dev_err(&ofdev->dev, "can't get CTL address from "  in pata_of_platform_probe()
46 		return -EINVAL;  in pata_of_platform_probe()
52 	if (irq < 0 && irq != -ENXIO)  in pata_of_platform_probe()
59 	of_property_read_u32(dn, "reg-shift", &reg_shift);  in pata_of_platform_probe()
61 	if (!of_property_read_u32(dn, "pio-mode", &pio_mode)) {  in pata_of_platform_probe()
63 			dev_err(&ofdev->dev, "invalid pio-mode\n");  in pata_of_platform_probe()
64 			return -EINVAL;  in pata_of_platform_probe()
67 		dev_info(&ofdev->dev, "pio-mode unspecified, assuming PIO0\n");  in pata_of_platform_probe()
70 	use16bit = of_property_read_bool(dn, "ata-generic,use16bit");  in pata_of_platform_probe()
73 	pio_mask |= (1 << pio_mode) - 1;  in pata_of_platform_probe()
75 	return __pata_platform_probe(&ofdev->dev, &io_res, &ctl_res, irq > 0 ? &irq_res : NULL,  in pata_of_platform_probe()
81 	{ .compatible = "ata-generic", },
97 MODULE_DESCRIPTION("OF-platform PATA driver");