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 <linux/acpi.h>
24#include <linux/pci_ids.h>
25#include "ahci.h"
26
27#define DRV_NAME "ahci"
28
29static const struct ata_port_info ahci_port_info = {
30	.flags		= AHCI_FLAG_COMMON,
31	.pio_mask	= ATA_PIO4,
32	.udma_mask	= ATA_UDMA6,
33	.port_ops	= &ahci_platform_ops,
34};
35
36static struct scsi_host_template ahci_platform_sht = {
37	AHCI_SHT(DRV_NAME),
38};
39
40static int ahci_probe(struct platform_device *pdev)
41{
42	struct device *dev = &pdev->dev;
43	struct ahci_host_priv *hpriv;
44	int rc;
45
46	hpriv = ahci_platform_get_resources(pdev);
47	if (IS_ERR(hpriv))
48		return PTR_ERR(hpriv);
49
50	rc = ahci_platform_enable_resources(hpriv);
51	if (rc)
52		return rc;
53
54	of_property_read_u32(dev->of_node,
55			     "ports-implemented", &hpriv->force_port_map);
56
57	if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci"))
58		hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ;
59
60	rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info,
61				     &ahci_platform_sht);
62	if (rc)
63		goto disable_resources;
64
65	return 0;
66disable_resources:
67	ahci_platform_disable_resources(hpriv);
68	return rc;
69}
70
71static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
72			 ahci_platform_resume);
73
74static const struct of_device_id ahci_of_match[] = {
75	{ .compatible = "generic-ahci", },
76	/* Keep the following compatibles for device tree compatibility */
77	{ .compatible = "snps,spear-ahci", },
78	{ .compatible = "snps,exynos5440-ahci", },
79	{ .compatible = "ibm,476gtr-ahci", },
80	{ .compatible = "snps,dwc-ahci", },
81	{ .compatible = "hisilicon,hisi-ahci", },
82	{},
83};
84MODULE_DEVICE_TABLE(of, ahci_of_match);
85
86static const struct acpi_device_id ahci_acpi_match[] = {
87	{ ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) },
88	{},
89};
90MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);
91
92static struct platform_driver ahci_driver = {
93	.probe = ahci_probe,
94	.remove = ata_platform_remove_one,
95	.driver = {
96		.name = DRV_NAME,
97		.of_match_table = ahci_of_match,
98		.acpi_match_table = ahci_acpi_match,
99		.pm = &ahci_pm_ops,
100	},
101};
102module_platform_driver(ahci_driver);
103
104MODULE_DESCRIPTION("AHCI SATA platform driver");
105MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
106MODULE_LICENSE("GPL");
107MODULE_ALIAS("platform:ahci");
108