From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:49:45 +0200
Subject: Adding upstream version 6.1.76.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 drivers/ata/ahci_platform.c | 113 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 drivers/ata/ahci_platform.c

(limited to 'drivers/ata/ahci_platform.c')

diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
new file mode 100644
index 000000000..8f5572a9f
--- /dev/null
+++ b/drivers/ata/ahci_platform.c
@@ -0,0 +1,113 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * 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>
+ */
+
+#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 const struct ata_port_info ahci_port_info_nolpm = {
+	.flags		= AHCI_FLAG_COMMON | ATA_FLAG_NO_LPM,
+	.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;
+	const struct ata_port_info *port;
+	int rc;
+
+	hpriv = ahci_platform_get_resources(pdev,
+					    AHCI_PLATFORM_GET_RESETS);
+	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;
+
+	port = acpi_device_get_match_data(dev);
+	if (!port)
+		port = &ahci_port_info;
+
+	rc = ahci_platform_init_host(pdev, hpriv, port,
+				     &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 = "ibm,476gtr-ahci", },
+	{ .compatible = "hisilicon,hisi-ahci", },
+	{ .compatible = "cavium,octeon-7130-ahci", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, ahci_of_match);
+
+static const struct acpi_device_id ahci_acpi_match[] = {
+	{ "APMC0D33", (unsigned long)&ahci_port_info_nolpm },
+	{ 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");
-- 
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