/* * Platform IDE driver * * Copyright (C) 2007 MontaVista Software * * Maintainer: Kumar Gala <galak@kernel.crashing.org> * * This program is free software; you can redistribute  it and/or modify it * under  the terms of  the GNU General  Public License as published by the * Free Software Foundation;  either version 2 of the  License, or (at your * option) any later version. */ #include <linux/types.h>#include <linux/init.h>#include <linux/kernel.h>#include <linux/ide.h>#include <linux/ioport.h>#include <linux/module.h>#include <linux/ata_platform.h>#include <linux/platform_device.h>#include <linux/interrupt.h>#include <linux/io.h> static void plat_ide_setup_ports(struct ide_hw *hw, void __iomem *base,				 void __iomem *ctrl,				 struct pata_platform_info *pdata, int irq){	unsigned long port = (unsigned long)base;	int i; 	hw->io_ports.data_addr = port; 	port += (1 << pdata->ioport_shift);	for (i = 1; i <= 7;	     i++, port += (1 << pdata->ioport_shift))		hw->io_ports_array[i] = port; 	hw->io_ports.ctl_addr = (unsigned long)ctrl; 	hw->irq = irq;} static const struct ide_port_info platform_ide_port_info = {	.host_flags		= IDE_HFLAG_NO_DMA,	.chipset		= ide_generic,}; static int plat_ide_probe(struct platform_device *pdev){	struct resource *res_base, *res_alt, *res_irq;	void __iomem *base, *alt_base;	struct pata_platform_info *pdata;	struct ide_host *host;	int ret = 0, mmio = 0;	struct ide_hw hw, *hws[] = { &hw };	struct ide_port_info d = platform_ide_port_info; 	pdata = dev_get_platdata(&pdev->dev); 	/* get a pointer to the register memory */	res_base = platform_get_resource(pdev, IORESOURCE_IO, 0);	res_alt = platform_get_resource(pdev, IORESOURCE_IO, 1); 	if (!res_base || !res_alt) {		res_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);		res_alt = platform_get_resource(pdev, IORESOURCE_MEM, 1);		if (!res_base || !res_alt) {			ret = -ENOMEM;			goto out;		}		mmio = 1;	} 	res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);	if (!res_irq) {		ret = -EINVAL;		goto out;	} 	if (mmio) {		base = devm_ioremap(&pdev->dev,			res_base->start, resource_size(res_base));		alt_base = devm_ioremap(&pdev->dev,			res_alt->start, resource_size(res_alt));	} else {		base = devm_ioport_map(&pdev->dev,			res_base->start, resource_size(res_base));		alt_base = devm_ioport_map(&pdev->dev,			res_alt->start, resource_size(res_alt));	} 	memset(&hw, 0, sizeof(hw));	plat_ide_setup_ports(&hw, base, alt_base, pdata, res_irq->start);	hw.dev = &pdev->dev; 	d.irq_flags = res_irq->flags & IRQF_TRIGGER_MASK;	if (res_irq->flags & IORESOURCE_IRQ_SHAREABLE)		d.irq_flags |= IRQF_SHARED; 	if (mmio)		d.host_flags |= IDE_HFLAG_MMIO; 	ret = ide_host_add(&d, hws, 1, &host);	if (ret)		goto out; 	platform_set_drvdata(pdev, host); 	return 0; out:	return ret;} static int plat_ide_remove(struct platform_device *pdev){	struct ide_host *host = dev_get_drvdata(&pdev->dev); 	ide_host_remove(host); 	return 0;} static struct platform_driver platform_ide_driver = {	.driver = {		.name = "pata_platform",		.owner = THIS_MODULE,	},	.probe = plat_ide_probe,	.remove = plat_ide_remove,}; module_platform_driver(platform_ide_driver); MODULE_DESCRIPTION("Platform IDE driver");MODULE_LICENSE("GPL");MODULE_ALIAS("platform:pata_platform");