Merge tag 'pwm/for-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry...
[sfrench/cifs-2.6.git] / drivers / ata / ahci_platform.c
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
29 static 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
36 static struct scsi_host_template ahci_platform_sht = {
37         AHCI_SHT(DRV_NAME),
38 };
39
40 static 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;
66 disable_resources:
67         ahci_platform_disable_resources(hpriv);
68         return rc;
69 }
70
71 static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
72                          ahci_platform_resume);
73
74 static 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         { .compatible = "cavium,octeon-7130-ahci", },
83         {},
84 };
85 MODULE_DEVICE_TABLE(of, ahci_of_match);
86
87 static const struct acpi_device_id ahci_acpi_match[] = {
88         { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) },
89         {},
90 };
91 MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);
92
93 static struct platform_driver ahci_driver = {
94         .probe = ahci_probe,
95         .remove = ata_platform_remove_one,
96         .shutdown = ahci_platform_shutdown,
97         .driver = {
98                 .name = DRV_NAME,
99                 .of_match_table = ahci_of_match,
100                 .acpi_match_table = ahci_acpi_match,
101                 .pm = &ahci_pm_ops,
102         },
103 };
104 module_platform_driver(ahci_driver);
105
106 MODULE_DESCRIPTION("AHCI SATA platform driver");
107 MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
108 MODULE_LICENSE("GPL");
109 MODULE_ALIAS("platform:ahci");