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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 "ahci.h"
 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 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;
 54 disable_resources:
 55         ahci_platform_disable_resources(hpriv);
 56         return rc;
 57 }
 58 
 59 static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
 60                          ahci_platform_resume);
 61 
 62 static 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 };
 72 MODULE_DEVICE_TABLE(of, ahci_of_match);
 73 
 74 static 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 };
 84 module_platform_driver(ahci_driver);
 85 
 86 MODULE_DESCRIPTION("AHCI SATA platform driver");
 87 MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
 88 MODULE_LICENSE("GPL");
 89 MODULE_ALIAS("platform:ahci");
 90 

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