Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / ata / ahci_platform.c

diff --git a/kernel/drivers/ata/ahci_platform.c b/kernel/drivers/ata/ahci_platform.c
new file mode 100644 (file)
index 0000000..78d6ae0
--- /dev/null
+++ b/kernel/drivers/ata/ahci_platform.c
@@ -0,0 +1,95 @@
+/*
+ * 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 "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;
+
+       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", },
+       {},
+};
+MODULE_DEVICE_TABLE(of, ahci_of_match);
+
+static struct platform_driver ahci_driver = {
+       .probe = ahci_probe,
+       .remove = ata_platform_remove_one,
+       .driver = {
+               .name = DRV_NAME,
+               .of_match_table = ahci_of_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");