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Linux/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         .driver = {
 97                 .name = DRV_NAME,
 98                 .of_match_table = ahci_of_match,
 99                 .acpi_match_table = ahci_acpi_match,
100                 .pm = &ahci_pm_ops,
101         },
102 };
103 module_platform_driver(ahci_driver);
104 
105 MODULE_DESCRIPTION("AHCI SATA platform driver");
106 MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
107 MODULE_LICENSE("GPL");
108 MODULE_ALIAS("platform:ahci");
109 

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