linux/drivers/ata/ahci_platform.c
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   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
  25static 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
  32static 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;
  54disable_resources:
  55        ahci_platform_disable_resources(hpriv);
  56        return rc;
  57}
  58
  59static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
  60                         ahci_platform_resume);
  61
  62static 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};
  72MODULE_DEVICE_TABLE(of, ahci_of_match);
  73
  74static struct platform_driver ahci_driver = {
  75        .probe = ahci_probe,
  76        .remove = ata_platform_remove_one,
  77        .driver = {
  78                .name = "ahci",
  79                .of_match_table = ahci_of_match,
  80                .pm = &ahci_pm_ops,
  81        },
  82};
  83module_platform_driver(ahci_driver);
  84
  85MODULE_DESCRIPTION("AHCI SATA platform driver");
  86MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
  87MODULE_LICENSE("GPL");
  88MODULE_ALIAS("platform:ahci");
  89
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