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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 #define DRV_NAME "ahci"
 26 
 27 static const struct ata_port_info ahci_port_info = {
 28         .flags          = AHCI_FLAG_COMMON,
 29         .pio_mask       = ATA_PIO4,
 30         .udma_mask      = ATA_UDMA6,
 31         .port_ops       = &ahci_platform_ops,
 32 };
 33 
 34 static struct scsi_host_template ahci_platform_sht = {
 35         AHCI_SHT(DRV_NAME),
 36 };
 37 
 38 static int ahci_probe(struct platform_device *pdev)
 39 {
 40         struct device *dev = &pdev->dev;
 41         struct ahci_host_priv *hpriv;
 42         int rc;
 43 
 44         hpriv = ahci_platform_get_resources(pdev);
 45         if (IS_ERR(hpriv))
 46                 return PTR_ERR(hpriv);
 47 
 48         rc = ahci_platform_enable_resources(hpriv);
 49         if (rc)
 50                 return rc;
 51 
 52         if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci"))
 53                 hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ;
 54 
 55         rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info,
 56                                      &ahci_platform_sht);
 57         if (rc)
 58                 goto disable_resources;
 59 
 60         return 0;
 61 disable_resources:
 62         ahci_platform_disable_resources(hpriv);
 63         return rc;
 64 }
 65 
 66 static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
 67                          ahci_platform_resume);
 68 
 69 static const struct of_device_id ahci_of_match[] = {
 70         { .compatible = "generic-ahci", },
 71         /* Keep the following compatibles for device tree compatibility */
 72         { .compatible = "snps,spear-ahci", },
 73         { .compatible = "snps,exynos5440-ahci", },
 74         { .compatible = "ibm,476gtr-ahci", },
 75         { .compatible = "snps,dwc-ahci", },
 76         { .compatible = "hisilicon,hisi-ahci", },
 77         {},
 78 };
 79 MODULE_DEVICE_TABLE(of, ahci_of_match);
 80 
 81 static struct platform_driver ahci_driver = {
 82         .probe = ahci_probe,
 83         .remove = ata_platform_remove_one,
 84         .driver = {
 85                 .name = DRV_NAME,
 86                 .of_match_table = ahci_of_match,
 87                 .pm = &ahci_pm_ops,
 88         },
 89 };
 90 module_platform_driver(ahci_driver);
 91 
 92 MODULE_DESCRIPTION("AHCI SATA platform driver");
 93 MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
 94 MODULE_LICENSE("GPL");
 95 MODULE_ALIAS("platform:ahci");
 96 

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