1/*
2 * AHCI SATA platform driver
3 *
4 * Copyright 2004-2005  Red Hat, Inc.
5 *   Jeff Garzik <jgarzik@pobox.com>
6 * Copyright 2010  MontaVista Software, LLC.
7 *   Anton Vorontsov <avorontsov@ru.mvista.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2, or (at your option)
12 * any later version.
13 */
14
15#include <linux/kernel.h>
16#include <linux/module.h>
17#include <linux/pm.h>
18#include <linux/device.h>
19#include <linux/of_device.h>
20#include <linux/platform_device.h>
21#include <linux/libata.h>
22#include <linux/ahci_platform.h>
23#include "ahci.h"
24
25#define DRV_NAME "ahci"
26
27static const struct ata_port_info ahci_port_info = {
28	.flags		= AHCI_FLAG_COMMON,
29	.pio_mask	= ATA_PIO4,
30	.udma_mask	= ATA_UDMA6,
31	.port_ops	= &ahci_platform_ops,
32};
33
34static struct scsi_host_template ahci_platform_sht = {
35	AHCI_SHT(DRV_NAME),
36};
37
38static int ahci_probe(struct platform_device *pdev)
39{
40	struct device *dev = &pdev->dev;
41	struct ahci_host_priv *hpriv;
42	int rc;
43
44	hpriv = ahci_platform_get_resources(pdev);
45	if (IS_ERR(hpriv))
46		return PTR_ERR(hpriv);
47
48	rc = ahci_platform_enable_resources(hpriv);
49	if (rc)
50		return rc;
51
52	of_property_read_u32(dev->of_node,
53			     "ports-implemented", &hpriv->force_port_map);
54
55	if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci"))
56		hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ;
57
58	rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info,
59				     &ahci_platform_sht);
60	if (rc)
61		goto disable_resources;
62
63	return 0;
64disable_resources:
65	ahci_platform_disable_resources(hpriv);
66	return rc;
67}
68
69static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
70			 ahci_platform_resume);
71
72static const struct of_device_id ahci_of_match[] = {
73	{ .compatible = "generic-ahci", },
74	/* Keep the following compatibles for device tree compatibility */
75	{ .compatible = "snps,spear-ahci", },
76	{ .compatible = "snps,exynos5440-ahci", },
77	{ .compatible = "ibm,476gtr-ahci", },
78	{ .compatible = "snps,dwc-ahci", },
79	{ .compatible = "hisilicon,hisi-ahci", },
80	{},
81};
82MODULE_DEVICE_TABLE(of, ahci_of_match);
83
84static struct platform_driver ahci_driver = {
85	.probe = ahci_probe,
86	.remove = ata_platform_remove_one,
87	.driver = {
88		.name = DRV_NAME,
89		.of_match_table = ahci_of_match,
90		.pm = &ahci_pm_ops,
91	},
92};
93module_platform_driver(ahci_driver);
94
95MODULE_DESCRIPTION("AHCI SATA platform driver");
96MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
97MODULE_LICENSE("GPL");
98MODULE_ALIAS("platform:ahci");
99