tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
25static const struct ata_port_info ahci_port_info = {
26 .flags = AHCI_FLAG_COMMON,
27 .pio_mask = ATA_PIO4,
28 .udma_mask = ATA_UDMA6,
29 .port_ops = &ahci_platform_ops,
30};
31
32static int ahci_probe(struct platform_device *pdev)
33{
34 struct device *dev = &pdev->dev;
35 struct ahci_host_priv *hpriv;
36 int rc;
37
38 hpriv = ahci_platform_get_resources(pdev);
39 if (IS_ERR(hpriv))
40 return PTR_ERR(hpriv);
41
42 rc = ahci_platform_enable_resources(hpriv);
43 if (rc)
44 return rc;
45
46 if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci"))
47 hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ;
48
49 rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info);
50 if (rc)
51 goto disable_resources;
52
53 return 0;
54disable_resources:
55 ahci_platform_disable_resources(hpriv);
56 return rc;
57}
58
59static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
60 ahci_platform_resume);
61
62static const struct of_device_id ahci_of_match[] = {
63 { .compatible = "generic-ahci", },
64 /* Keep the following compatibles for device tree compatibility */
65 { .compatible = "snps,spear-ahci", },
66 { .compatible = "snps,exynos5440-ahci", },
67 { .compatible = "ibm,476gtr-ahci", },
68 { .compatible = "snps,dwc-ahci", },
69 { .compatible = "hisilicon,hisi-ahci", },
70 {},
71};
72MODULE_DEVICE_TABLE(of, ahci_of_match);
73
74static struct platform_driver ahci_driver = {
75 .probe = ahci_probe,
76 .remove = ata_platform_remove_one,
77 .driver = {
78 .name = "ahci",
79 .owner = THIS_MODULE,
80 .of_match_table = ahci_of_match,
81 .pm = &ahci_pm_ops,
82 },
83};
84module_platform_driver(ahci_driver);
85
86MODULE_DESCRIPTION("AHCI SATA platform driver");
87MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
88MODULE_LICENSE("GPL");
89MODULE_ALIAS("platform:ahci");