Input: i8042 - add Acer Aspire 5738z to nomux list
[linux-2.6-microblaze.git] / drivers / ata / ahci_platform.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * AHCI SATA platform driver
4  *
5  * Copyright 2004-2005  Red Hat, Inc.
6  *   Jeff Garzik <jgarzik@pobox.com>
7  * Copyright 2010  MontaVista Software, LLC.
8  *   Anton Vorontsov <avorontsov@ru.mvista.com>
9  */
10
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/pm.h>
14 #include <linux/device.h>
15 #include <linux/of_device.h>
16 #include <linux/platform_device.h>
17 #include <linux/libata.h>
18 #include <linux/ahci_platform.h>
19 #include <linux/acpi.h>
20 #include <linux/pci_ids.h>
21 #include "ahci.h"
22
23 #define DRV_NAME "ahci"
24
25 static 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
32 static const struct ata_port_info ahci_port_info_nolpm = {
33         .flags          = AHCI_FLAG_COMMON | ATA_FLAG_NO_LPM,
34         .pio_mask       = ATA_PIO4,
35         .udma_mask      = ATA_UDMA6,
36         .port_ops       = &ahci_platform_ops,
37 };
38
39 static struct scsi_host_template ahci_platform_sht = {
40         AHCI_SHT(DRV_NAME),
41 };
42
43 static int ahci_probe(struct platform_device *pdev)
44 {
45         struct device *dev = &pdev->dev;
46         struct ahci_host_priv *hpriv;
47         const struct ata_port_info *port;
48         int rc;
49
50         hpriv = ahci_platform_get_resources(pdev,
51                                             AHCI_PLATFORM_GET_RESETS);
52         if (IS_ERR(hpriv))
53                 return PTR_ERR(hpriv);
54
55         rc = ahci_platform_enable_resources(hpriv);
56         if (rc)
57                 return rc;
58
59         of_property_read_u32(dev->of_node,
60                              "ports-implemented", &hpriv->force_port_map);
61
62         if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci"))
63                 hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ;
64
65         port = acpi_device_get_match_data(dev);
66         if (!port)
67                 port = &ahci_port_info;
68
69         rc = ahci_platform_init_host(pdev, hpriv, port,
70                                      &ahci_platform_sht);
71         if (rc)
72                 goto disable_resources;
73
74         return 0;
75 disable_resources:
76         ahci_platform_disable_resources(hpriv);
77         return rc;
78 }
79
80 static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
81                          ahci_platform_resume);
82
83 static const struct of_device_id ahci_of_match[] = {
84         { .compatible = "generic-ahci", },
85         /* Keep the following compatibles for device tree compatibility */
86         { .compatible = "snps,spear-ahci", },
87         { .compatible = "ibm,476gtr-ahci", },
88         { .compatible = "snps,dwc-ahci", },
89         { .compatible = "hisilicon,hisi-ahci", },
90         { .compatible = "cavium,octeon-7130-ahci", },
91         {},
92 };
93 MODULE_DEVICE_TABLE(of, ahci_of_match);
94
95 static const struct acpi_device_id ahci_acpi_match[] = {
96         { "APMC0D33", (unsigned long)&ahci_port_info_nolpm },
97         { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) },
98         {},
99 };
100 MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);
101
102 static struct platform_driver ahci_driver = {
103         .probe = ahci_probe,
104         .remove = ata_platform_remove_one,
105         .shutdown = ahci_platform_shutdown,
106         .driver = {
107                 .name = DRV_NAME,
108                 .of_match_table = ahci_of_match,
109                 .acpi_match_table = ahci_acpi_match,
110                 .pm = &ahci_pm_ops,
111         },
112 };
113 module_platform_driver(ahci_driver);
114
115 MODULE_DESCRIPTION("AHCI SATA platform driver");
116 MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
117 MODULE_LICENSE("GPL");
118 MODULE_ALIAS("platform:ahci");