[PATCH] enable acpi support in qoriq ahci driver

[Udit Kumar <udit.kumar@xxxxxxx>]

This patch enables ACPI support in qoriq ahci driver.

Signed-off-by: Udit Kumar <udit.kumar@xxxxxxx>
---
 drivers/ata/ahci_qoriq.c | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/drivers/ata/ahci_qoriq.c b/drivers/ata/ahci_qoriq.c
index ea1175f..9b53992 100644
--- a/drivers/ata/ahci_qoriq.c
+++ b/drivers/ata/ahci_qoriq.c
@@ -10,6 +10,7 @@
  * any later version.
  */
 
+#include <linux/acpi.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/pm.h>
@@ -84,6 +85,12 @@ struct ahci_qoriq_priv {
 };
 MODULE_DEVICE_TABLE(of, ahci_qoriq_of_match);
 
+static const struct acpi_device_id ahci_qoriq_acpi_match[] = {
+	{"NXP0004", .driver_data = (kernel_ulong_t)AHCI_LX2160A},
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, ahci_qoriq_acpi_match);
+
 static int ahci_qoriq_hardreset(struct ata_link *link, unsigned int *class,
 			  unsigned long deadline)
 {
@@ -265,20 +272,25 @@ static int ahci_qoriq_probe(struct platform_device *pdev)
 	const struct of_device_id *of_id;
 	struct resource *res;
 	int rc;
+	const struct acpi_device_id *acpi_id;
 
 	hpriv = ahci_platform_get_resources(pdev, 0);
 	if (IS_ERR(hpriv))
 		return PTR_ERR(hpriv);
 
 	of_id = of_match_node(ahci_qoriq_of_match, np);
-	if (!of_id)
+	acpi_id = acpi_match_device(ahci_qoriq_acpi_match, &pdev->dev);
+	if (!(of_id || acpi_id))
 		return -ENODEV;
 
 	qoriq_priv = devm_kzalloc(dev, sizeof(*qoriq_priv), GFP_KERNEL);
 	if (!qoriq_priv)
 		return -ENOMEM;
 
-	qoriq_priv->type = (enum ahci_qoriq_type)of_id->data;
+	if (of_id)
+		qoriq_priv->type = (enum ahci_qoriq_type)of_id->data;
+	else
+		qoriq_priv->type = (enum ahci_qoriq_type)acpi_id->driver_data;
 
 	if (unlikely(!ecc_initialized)) {
 		res = platform_get_resource_byname(pdev,
@@ -292,7 +304,8 @@ static int ahci_qoriq_probe(struct platform_device *pdev)
 		}
 	}
 
-	qoriq_priv->is_dmacoherent = of_dma_is_coherent(np);
+	if (device_get_dma_attr(&pdev->dev) == DEV_DMA_COHERENT)
+		qoriq_priv->is_dmacoherent = true;
 
 	rc = ahci_platform_enable_resources(hpriv);
 	if (rc)
@@ -358,6 +371,7 @@ static SIMPLE_DEV_PM_OPS(ahci_qoriq_pm_ops, ahci_platform_suspend,
 	.driver = {
 		.name = DRV_NAME,
 		.of_match_table = ahci_qoriq_of_match,
+		.acpi_match_table = ahci_qoriq_acpi_match,
 		.pm = &ahci_qoriq_pm_ops,
 	},
 };
-- 
1.9.1