linux-kernel - [PATCH] ahci: qoriq: enable acpi support in qoriq ahci driver

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Message-Id: <20200817082204.13523-1-andy.tang@nxp.com>
Date:   Mon, 17 Aug 2020 16:22:04 +0800
From:   andy.tang@....com
To:     axboe@...nel.dk
Cc:     linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
        Yuantian Tang <andy.tang@....com>,
        Udit Kumar <udit.kumar@....com>
Subject: [PATCH] ahci: qoriq: enable acpi support in qoriq ahci driver

From: Yuantian Tang <andy.tang@....com>

This patch enables ACPI support in qoriq ahci driver.

Signed-off-by: Udit Kumar <udit.kumar@....com>
Signed-off-by: Yuantian Tang <andy.tang@....com>
---
 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 a330307d3201..5b46fc9aeb4a 100644
--- a/drivers/ata/ahci_qoriq.c
+++ b/drivers/ata/ahci_qoriq.c
@@ -6,6 +6,7 @@
  *   Tang Yuantian <Yuantian.Tang@...escale.com>
  */
 
+#include <linux/acpi.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/pm.h>
@@ -80,6 +81,12 @@ static const struct of_device_id ahci_qoriq_of_match[] = {
 };
 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)
 {
@@ -255,6 +262,7 @@ static int ahci_qoriq_phy_init(struct ahci_host_priv *hpriv)
 static int ahci_qoriq_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
+	const struct acpi_device_id *acpi_id;
 	struct device *dev = &pdev->dev;
 	struct ahci_host_priv *hpriv;
 	struct ahci_qoriq_priv *qoriq_priv;
@@ -267,14 +275,18 @@ static int ahci_qoriq_probe(struct platform_device *pdev)
 		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,
@@ -288,7 +300,8 @@ 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)
@@ -354,6 +367,7 @@ static struct platform_driver ahci_qoriq_driver = {
 	.driver = {
 		.name = DRV_NAME,
 		.of_match_table = ahci_qoriq_of_match,
+		.acpi_match_table = ahci_qoriq_acpi_match,
 		.pm = &ahci_qoriq_pm_ops,
 	},
 };
-- 
2.17.1