[linux-block.git] / drivers / ide / ide_platform.c

/*
 * 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/io.h>

static void __devinit 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 __devinit 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 = pdev->dev.platform_data;

	/* 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, res_base->end - res_base->start + 1);
		alt_base = devm_ioremap(&pdev->dev,
			res_alt->start, res_alt->end - res_alt->start + 1);
	} else {
		base = devm_ioport_map(&pdev->dev,
			res_base->start, res_base->end - res_base->start + 1);
		alt_base = devm_ioport_map(&pdev->dev,
			res_alt->start, res_alt->end - res_alt->start + 1);
	}

	memset(&hw, 0, sizeof(hw));
	plat_ide_setup_ports(&hw, base, alt_base, pdata, res_irq->start);
	hw.dev = &pdev->dev;

	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 __devexit 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 = __devexit_p(plat_ide_remove),
};

static int __init platform_ide_init(void)
{
	return platform_driver_register(&platform_ide_driver);
}

static void __exit platform_ide_exit(void)
{
	platform_driver_unregister(&platform_ide_driver);
}

MODULE_DESCRIPTION("Platform IDE driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:pata_platform");

module_init(platform_ide_init);
module_exit(platform_ide_exit);
Commit	Line	Data
8cb1f567 AV	1	/*
	2	* Platform IDE driver
	3	*
	4	* Copyright (C) 2007 MontaVista Software
	5	*
	6	* Maintainer: Kumar Gala <galak@kernel.crashing.org>
	7	*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the
	10	* Free Software Foundation; either version 2 of the License, or (at your
	11	* option) any later version.
	12	*/
	13
	14	#include <linux/types.h>
	15	#include <linux/init.h>
	16	#include <linux/kernel.h>
	17	#include <linux/ide.h>
	18	#include <linux/ioport.h>
	19	#include <linux/module.h>
0a87e3e9	20	#include <linux/ata_platform.h>
8cb1f567 AV	21	#include <linux/platform_device.h>
	22	#include <linux/io.h>
	23
9f36d314	24	static void __devinit plat_ide_setup_ports(struct ide_hw *hw,
57c802e8 BZ	25	void __iomem *base,
	26	void __iomem *ctrl,
	27	struct pata_platform_info *pdata,
	28	int irq)
8cb1f567 AV	29	{
8cb1f567 AV	30	unsigned long port = (unsigned long)base;
baa8f3e9	31	int i;
8cb1f567	32
4c3032d8	33	hw->io_ports.data_addr = port;
8cb1f567 AV	34
8cb1f567 AV	35	port += (1 << pdata->ioport_shift);
4c3032d8	36	for (i = 1; i <= 7;
8cb1f567	37	i++, port += (1 << pdata->ioport_shift))
4c3032d8	38	hw->io_ports_array[i] = port;
8cb1f567	39
4c3032d8	40	hw->io_ports.ctl_addr = (unsigned long)ctrl;
8cb1f567	41
57c802e8	42	hw->irq = irq;
8cb1f567 AV	43	}
8cb1f567 AV	44
7b60fa16 BZ	45	static const struct ide_port_info platform_ide_port_info = {
7b60fa16 BZ	46	.host_flags = IDE_HFLAG_NO_DMA,
29e52cf7	47	.chipset = ide_generic,
7b60fa16 BZ	48	};
7b60fa16 BZ	49
8cb1f567 AV	50	static int __devinit plat_ide_probe(struct platform_device *pdev)
	51	{
	52	struct resource res_base, res_alt, *res_irq;
04244937	53	void __iomem base, alt_base;
8cb1f567	54	struct pata_platform_info *pdata;
48c3c107	55	struct ide_host *host;
c97c6aca	56	int ret = 0, mmio = 0;
9f36d314	57	struct ide_hw hw, *hws[] = { &hw };
7b60fa16	58	struct ide_port_info d = platform_ide_port_info;
8cb1f567 AV	59
	60	pdata = pdev->dev.platform_data;
	61
	62	/* get a pointer to the register memory */
	63	res_base = platform_get_resource(pdev, IORESOURCE_IO, 0);
	64	res_alt = platform_get_resource(pdev, IORESOURCE_IO, 1);
	65
	66	if (!res_base \|\| !res_alt) {
	67	res_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	68	res_alt = platform_get_resource(pdev, IORESOURCE_MEM, 1);
	69	if (!res_base \|\| !res_alt) {
	70	ret = -ENOMEM;
	71	goto out;
	72	}
	73	mmio = 1;
	74	}
	75
	76	res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	77	if (!res_irq) {
	78	ret = -EINVAL;
	79	goto out;
	80	}
	81
	82	if (mmio) {
04244937	83	base = devm_ioremap(&pdev->dev,
8cb1f567	84	res_base->start, res_base->end - res_base->start + 1);
04244937	85	alt_base = devm_ioremap(&pdev->dev,
8cb1f567 AV	86	res_alt->start, res_alt->end - res_alt->start + 1);
8cb1f567 AV	87	} else {
04244937	88	base = devm_ioport_map(&pdev->dev,
8cb1f567	89	res_base->start, res_base->end - res_base->start + 1);
04244937	90	alt_base = devm_ioport_map(&pdev->dev,
8cb1f567 AV	91	res_alt->start, res_alt->end - res_alt->start + 1);
	92	}
	93
57c802e8	94	memset(&hw, 0, sizeof(hw));
04244937	95	plat_ide_setup_ports(&hw, base, alt_base, pdata, res_irq->start);
57c802e8 BZ	96	hw.dev = &pdev->dev;
57c802e8 BZ	97
761052e6	98	if (mmio)
7b60fa16	99	d.host_flags \|= IDE_HFLAG_MMIO;
57c802e8	100
dca39830	101	ret = ide_host_add(&d, hws, 1, &host);
6f904d01	102	if (ret)
48c3c107	103	goto out;
8cb1f567	104
48c3c107	105	platform_set_drvdata(pdev, host);
8cb1f567 AV	106
	107	return 0;
	108
	109	out:
	110	return ret;
	111	}
	112
	113	static int __devexit plat_ide_remove(struct platform_device *pdev)
	114	{
fcb52077	115	struct ide_host *host = dev_get_drvdata(&pdev->dev);
8cb1f567	116
48c3c107	117	ide_host_remove(host);
8cb1f567 AV	118
	119	return 0;
	120	}
	121
	122	static struct platform_driver platform_ide_driver = {
	123	.driver = {
	124	.name = "pata_platform",
458622fc	125	.owner = THIS_MODULE,
8cb1f567 AV	126	},
	127	.probe = plat_ide_probe,
	128	.remove = __devexit_p(plat_ide_remove),
	129	};
	130
	131	static int __init platform_ide_init(void)
	132	{
	133	return platform_driver_register(&platform_ide_driver);
	134	}
	135
	136	static void __exit platform_ide_exit(void)
	137	{
	138	platform_driver_unregister(&platform_ide_driver);
	139	}
	140
	141	MODULE_DESCRIPTION("Platform IDE driver");
	142	MODULE_LICENSE("GPL");
458622fc	143	MODULE_ALIAS("platform:pata_platform");
8cb1f567 AV	144
	145	module_init(platform_ide_init);
	146	module_exit(platform_ide_exit);