Eric Lee / smarc-fsl-linux-kernel

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drivers/ata/ahci_platform.c 2.86 KB
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81f7e3824   Eric Lee   Initial Release, ... 
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  /*
   * AHCI SATA platform driver
   *
   * Copyright 2004-2005  Red Hat, Inc.
   *   Jeff Garzik <jgarzik@pobox.com>
   * Copyright 2010  MontaVista Software, LLC.
   *   Anton Vorontsov <avorontsov@ru.mvista.com>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2, or (at your option)
   * any later version.
   */
  
  #include <linux/kernel.h>
  #include <linux/module.h>
  #include <linux/pm.h>
  #include <linux/device.h>
  #include <linux/of_device.h>
  #include <linux/platform_device.h>
  #include <linux/libata.h>
  #include <linux/ahci_platform.h>
  #include <linux/acpi.h>
  #include <linux/pci_ids.h>
  #include "ahci.h"
  
  #define DRV_NAME "ahci"
  
  static const struct ata_port_info ahci_port_info = {
  	.flags		= AHCI_FLAG_COMMON,
  	.pio_mask	= ATA_PIO4,
  	.udma_mask	= ATA_UDMA6,
  	.port_ops	= &ahci_platform_ops,
  };
  
  static struct scsi_host_template ahci_platform_sht = {
  	AHCI_SHT(DRV_NAME),
  };
  
  static int ahci_probe(struct platform_device *pdev)
  {
  	struct device *dev = &pdev->dev;
  	struct ahci_host_priv *hpriv;
  	int rc;
  
  	hpriv = ahci_platform_get_resources(pdev);
  	if (IS_ERR(hpriv))
  		return PTR_ERR(hpriv);
  
  	rc = ahci_platform_enable_resources(hpriv);
  	if (rc)
  		return rc;
  
  	of_property_read_u32(dev->of_node,
  			     "ports-implemented", &hpriv->force_port_map);
  
  	if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci"))
  		hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ;
  
  	rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info,
  				     &ahci_platform_sht);
  	if (rc)
  		goto disable_resources;
  
  	return 0;
  disable_resources:
  	ahci_platform_disable_resources(hpriv);
  	return rc;
  }
  
  static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
  			 ahci_platform_resume);
  
  static const struct of_device_id ahci_of_match[] = {
  	{ .compatible = "generic-ahci", },
  	/* Keep the following compatibles for device tree compatibility */
  	{ .compatible = "snps,spear-ahci", },
  	{ .compatible = "snps,exynos5440-ahci", },
  	{ .compatible = "ibm,476gtr-ahci", },
  	{ .compatible = "snps,dwc-ahci", },
  	{ .compatible = "hisilicon,hisi-ahci", },
  	{ .compatible = "cavium,octeon-7130-ahci", },
  	{},
  };
  MODULE_DEVICE_TABLE(of, ahci_of_match);
  
  static const struct acpi_device_id ahci_acpi_match[] = {
  	{ ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) },
  	{},
  };
  MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);
  
  static struct platform_driver ahci_driver = {
  	.probe = ahci_probe,
  	.remove = ata_platform_remove_one,
  	.shutdown = ahci_platform_shutdown,
  	.driver = {
  		.name = DRV_NAME,
  		.of_match_table = ahci_of_match,
  		.acpi_match_table = ahci_acpi_match,
  		.pm = &ahci_pm_ops,
  	},
  };
  module_platform_driver(ahci_driver);
  
  MODULE_DESCRIPTION("AHCI SATA platform driver");
  MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
  MODULE_LICENSE("GPL");
  MODULE_ALIAS("platform:ahci");