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2874c5fd28
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
133 lines
3 KiB
C
133 lines
3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Platform IDE driver
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*
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* Copyright (C) 2007 MontaVista Software
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*
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* Maintainer: Kumar Gala <galak@kernel.crashing.org>
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*/
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/ide.h>
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#include <linux/ioport.h>
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#include <linux/module.h>
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#include <linux/ata_platform.h>
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#include <linux/platform_device.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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static void plat_ide_setup_ports(struct ide_hw *hw, void __iomem *base,
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void __iomem *ctrl,
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struct pata_platform_info *pdata, int irq)
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{
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unsigned long port = (unsigned long)base;
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int i;
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hw->io_ports.data_addr = port;
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port += (1 << pdata->ioport_shift);
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for (i = 1; i <= 7;
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i++, port += (1 << pdata->ioport_shift))
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hw->io_ports_array[i] = port;
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hw->io_ports.ctl_addr = (unsigned long)ctrl;
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hw->irq = irq;
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}
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static const struct ide_port_info platform_ide_port_info = {
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.host_flags = IDE_HFLAG_NO_DMA,
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.chipset = ide_generic,
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};
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static int plat_ide_probe(struct platform_device *pdev)
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{
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struct resource *res_base, *res_alt, *res_irq;
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void __iomem *base, *alt_base;
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struct pata_platform_info *pdata;
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struct ide_host *host;
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int ret = 0, mmio = 0;
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struct ide_hw hw, *hws[] = { &hw };
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struct ide_port_info d = platform_ide_port_info;
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pdata = dev_get_platdata(&pdev->dev);
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/* get a pointer to the register memory */
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res_base = platform_get_resource(pdev, IORESOURCE_IO, 0);
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res_alt = platform_get_resource(pdev, IORESOURCE_IO, 1);
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if (!res_base || !res_alt) {
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res_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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res_alt = platform_get_resource(pdev, IORESOURCE_MEM, 1);
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if (!res_base || !res_alt) {
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ret = -ENOMEM;
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goto out;
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}
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mmio = 1;
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}
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res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
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if (!res_irq) {
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ret = -EINVAL;
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goto out;
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}
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if (mmio) {
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base = devm_ioremap(&pdev->dev,
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res_base->start, resource_size(res_base));
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alt_base = devm_ioremap(&pdev->dev,
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res_alt->start, resource_size(res_alt));
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} else {
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base = devm_ioport_map(&pdev->dev,
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res_base->start, resource_size(res_base));
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alt_base = devm_ioport_map(&pdev->dev,
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res_alt->start, resource_size(res_alt));
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}
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memset(&hw, 0, sizeof(hw));
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plat_ide_setup_ports(&hw, base, alt_base, pdata, res_irq->start);
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hw.dev = &pdev->dev;
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d.irq_flags = res_irq->flags & IRQF_TRIGGER_MASK;
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if (res_irq->flags & IORESOURCE_IRQ_SHAREABLE)
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d.irq_flags |= IRQF_SHARED;
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if (mmio)
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d.host_flags |= IDE_HFLAG_MMIO;
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ret = ide_host_add(&d, hws, 1, &host);
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if (ret)
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goto out;
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platform_set_drvdata(pdev, host);
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return 0;
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out:
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return ret;
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}
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static int plat_ide_remove(struct platform_device *pdev)
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{
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struct ide_host *host = dev_get_drvdata(&pdev->dev);
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ide_host_remove(host);
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return 0;
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}
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static struct platform_driver platform_ide_driver = {
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.driver = {
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.name = "pata_platform",
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},
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.probe = plat_ide_probe,
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.remove = plat_ide_remove,
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};
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module_platform_driver(platform_ide_driver);
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MODULE_DESCRIPTION("Platform IDE driver");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:pata_platform");
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