net: hns: dsaf adds support of acpi

Dsaf needs to get configuration parameter by ACPI, so this patch add
support of ACPI.
Signed-off-by: Kejian Yan <yankejian@huawei.com>
Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c

@@ -689,9 +689,7 @@ static int  hns_mac_get_info(struct hns_mac_cb *mac_cb)
 		return 0;
 	}
 
-	if (!is_of_node(mac_cb->fw_port))
-		return -EINVAL;
-
+	if (is_of_node(mac_cb->fw_port)) {
 	/* parse property from port subnode in dsaf */
 	np = of_parse_phandle(to_of_node(mac_cb->fw_port), "phy-handle", 0);
 	mac_cb->phy_dev = of_phy_find_device(np);
@@ -728,8 +726,9 @@ static int  hns_mac_get_info(struct hns_mac_cb *mac_cb)
 				mac_cb->mac_id);
 		}
 
-	ret = of_parse_phandle_with_fixed_args(to_of_node(mac_cb->fw_port),
-					       "cpld-syscon", 1, 0, &cpld_args);
+		ret = of_parse_phandle_with_fixed_args(
+			to_of_node(mac_cb->fw_port), "cpld-syscon", 1, 0,
+			&cpld_args);
 		if (ret) {
 			dev_dbg(mac_cb->dev, "mac%d no cpld-syscon found.\n",
 				mac_cb->mac_id);
@@ -744,6 +743,7 @@ static int  hns_mac_get_info(struct hns_mac_cb *mac_cb)
 				mac_cb->cpld_ctrl_reg = cpld_args.args[0];
 			}
 		}
+	}
 
 	return 0;
 }

drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c

@@ -7,6 +7,7 @@
  * (at your option) any later version.
  */
 
+#include <linux/acpi.h>
 #include <linux/device.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
@@ -33,6 +34,13 @@ const char *g_dsaf_mode_match[DSAF_MODE_MAX] = {
 	[DSAF_MODE_DISABLE_SP] = "single-port",
 };
 
+static const struct acpi_device_id hns_dsaf_acpi_match[] = {
+	{ "HISI00B1", 0 },
+	{ "HISI00B2", 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(acpi, hns_dsaf_acpi_match);
+
 int hns_dsaf_get_cfg(struct dsaf_device *dsaf_dev)
 {
 	int ret, i;
@@ -46,10 +54,22 @@ int hns_dsaf_get_cfg(struct dsaf_device *dsaf_dev)
 	struct device_node *np = dsaf_dev->dev->of_node;
 	struct platform_device *pdev = to_platform_device(dsaf_dev->dev);
 
+	if (dev_of_node(dsaf_dev->dev)) {
 		if (of_device_is_compatible(np, "hisilicon,hns-dsaf-v1"))
 			dsaf_dev->dsaf_ver = AE_VERSION_1;
 		else
 			dsaf_dev->dsaf_ver = AE_VERSION_2;
+	} else if (is_acpi_node(dsaf_dev->dev->fwnode)) {
+		if (acpi_dev_found(hns_dsaf_acpi_match[0].id))
+			dsaf_dev->dsaf_ver = AE_VERSION_1;
+		else if (acpi_dev_found(hns_dsaf_acpi_match[1].id))
+			dsaf_dev->dsaf_ver = AE_VERSION_2;
+		else
+			return -ENXIO;
+	} else {
+		dev_err(dsaf_dev->dev, "cannot get cfg data from of or acpi\n");
+		return -ENXIO;
+	}
 
 	ret = device_property_read_string(dsaf_dev->dev, "mode", &mode_str);
 	if (ret) {
@@ -81,26 +101,33 @@ int hns_dsaf_get_cfg(struct dsaf_device *dsaf_dev)
 	else
 		dsaf_dev->dsaf_tc_mode = HRD_DSAF_4TC_MODE;
 
+	if (dev_of_node(dsaf_dev->dev)) {
 		syscon = syscon_node_to_regmap(
 				of_parse_phandle(np, "subctrl-syscon", 0));
 		if (IS_ERR_OR_NULL(syscon)) {
-		res = platform_get_resource(pdev, IORESOURCE_MEM, res_idx++);
+			res = platform_get_resource(pdev, IORESOURCE_MEM,
+						    res_idx++);
 			if (!res) {
 				dev_err(dsaf_dev->dev, "subctrl info is needed!\n");
 				return -ENOMEM;
 			}
-		dsaf_dev->sc_base = devm_ioremap_resource(&pdev->dev, res);
+
+			dsaf_dev->sc_base = devm_ioremap_resource(&pdev->dev,
+								  res);
 			if (!dsaf_dev->sc_base) {
 				dev_err(dsaf_dev->dev, "subctrl can not map!\n");
 				return -ENOMEM;
 			}
 
-		res = platform_get_resource(pdev, IORESOURCE_MEM, res_idx++);
+			res = platform_get_resource(pdev, IORESOURCE_MEM,
+						    res_idx++);
 			if (!res) {
 				dev_err(dsaf_dev->dev, "serdes-ctrl info is needed!\n");
 				return -ENOMEM;
 			}
-		dsaf_dev->sds_base = devm_ioremap_resource(&pdev->dev, res);
+
+			dsaf_dev->sds_base = devm_ioremap_resource(&pdev->dev,
+								   res);
 			if (!dsaf_dev->sds_base) {
 				dev_err(dsaf_dev->dev, "serdes-ctrl can not map!\n");
 				return -ENOMEM;
@@ -108,6 +135,7 @@ int hns_dsaf_get_cfg(struct dsaf_device *dsaf_dev)
 		} else {
 			dsaf_dev->sub_ctrl = syscon;
 		}
+	}
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ppe-base");
 	if (!res) {
@@ -2686,6 +2714,7 @@ static struct platform_driver g_dsaf_driver = {
 	.driver = {
 		.name = DSAF_DRV_NAME,
 		.of_match_table = g_dsaf_match,
+		.acpi_match_table = hns_dsaf_acpi_match,
 	},
 };
 

drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c

@@ -362,6 +362,7 @@ struct dsaf_misc_op *hns_misc_op_get(struct dsaf_device *dsaf_dev)
 	if (!misc_op)
 		return NULL;
 
+	if (dev_of_node(dsaf_dev->dev)) {
 		misc_op->cpld_set_led = hns_cpld_set_led;
 		misc_op->cpld_reset_led = cpld_led_reset;
 		misc_op->cpld_set_led_id = cpld_set_led_id;
@@ -377,6 +378,7 @@ struct dsaf_misc_op *hns_misc_op_get(struct dsaf_device *dsaf_dev)
 		misc_op->get_sfp_prsnt = hns_mac_get_sfp_prsnt;
 
 		misc_op->cfg_serdes_loopback = hns_mac_config_sds_loopback;
+	}
 
 	return (void *)misc_op;
 }