1 // SPDX-License-Identifier: GPL-2.0-only
3  *  A low-level PATA driver to handle a Compact Flash connected on the
10  *	Copyright (C) 2006-07 Tower Technologies
31 #include <asm/mach-rc32434/rb.h>
33 #define DRV_NAME	"pata-rb532-cf"
35 #define DRV_DESC	"PATA driver for RouterBOARD 532 Compact Flash"
52 /* ------------------------------------------------------------------------ */
57 	struct rb532_cf_info *info = ah->private_data;  in rb532_pata_irq_handler()
59 	if (gpiod_get_value(info->gpio_line)) {  in rb532_pata_irq_handler()
60 		irq_set_irq_type(info->irq, IRQ_TYPE_LEVEL_LOW);  in rb532_pata_irq_handler()
61 		ata_sff_interrupt(info->irq, dev_instance);  in rb532_pata_irq_handler()
63 		irq_set_irq_type(info->irq, IRQ_TYPE_LEVEL_HIGH);  in rb532_pata_irq_handler()
74 /* ------------------------------------------------------------------------ */
80 /* ------------------------------------------------------------------------ */
84 	struct rb532_cf_info *info = ah->private_data;  in rb532_pata_setup_ports()
87 	ap = ah->ports[0];  in rb532_pata_setup_ports()
89 	ap->ops		= &rb532_pata_port_ops;  in rb532_pata_setup_ports()
90 	ap->pio_mask	= ATA_PIO4;  in rb532_pata_setup_ports()
92 	ap->ioaddr.cmd_addr	= info->iobase + RB500_CF_REG_BASE;  in rb532_pata_setup_ports()
93 	ap->ioaddr.ctl_addr	= info->iobase + RB500_CF_REG_CTRL;  in rb532_pata_setup_ports()
94 	ap->ioaddr.altstatus_addr = info->iobase + RB500_CF_REG_CTRL;  in rb532_pata_setup_ports()
96 	ata_sff_std_ports(&ap->ioaddr);  in rb532_pata_setup_ports()
98 	ap->ioaddr.data_addr	= info->iobase + RB500_CF_REG_DBUF32;  in rb532_pata_setup_ports()
99 	ap->ioaddr.error_addr	= info->iobase + RB500_CF_REG_ERR;  in rb532_pata_setup_ports()
113 		dev_err(&pdev->dev, "no IOMEM resource found\n");  in rb532_pata_driver_probe()
114 		return -EINVAL;  in rb532_pata_driver_probe()
121 		return -EINVAL;  in rb532_pata_driver_probe()
123 	gpiod = devm_gpiod_get(&pdev->dev, NULL, GPIOD_IN);  in rb532_pata_driver_probe()
125 		dev_err(&pdev->dev, "no GPIO found for irq%d\n", irq);  in rb532_pata_driver_probe()
131 	ah = ata_host_alloc(&pdev->dev, RB500_CF_MAXPORTS);  in rb532_pata_driver_probe()
133 		return -ENOMEM;  in rb532_pata_driver_probe()
135 	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);  in rb532_pata_driver_probe()
137 		return -ENOMEM;  in rb532_pata_driver_probe()
139 	ah->private_data = info;  in rb532_pata_driver_probe()
140 	info->gpio_line = gpiod;  in rb532_pata_driver_probe()
141 	info->irq = irq;  in rb532_pata_driver_probe()
143 	info->iobase = devm_ioremap(&pdev->dev, res->start,  in rb532_pata_driver_probe()
145 	if (!info->iobase)  in rb532_pata_driver_probe()
146 		return -ENOMEM;  in rb532_pata_driver_probe()