[PATCH net-next] net: hns: add ACPI mode support for ethtool -p

[Peng Li <lipeng321@huawei.com>]

From: Jian Shen <shenjian15@huawei.com>

The locate operation interface of fiber port can only
work with DT mode. Add a new interface to control the
locate led for ACPI mode.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Tested-by: Zhou Wang <wangzhou1@hisilicon.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c  |  2 +-
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c | 57 +++++++++++++++++++++-
 2 files changed, 57 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
index 8b5cdf4..cac86e9 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
@@ -1168,7 +1168,7 @@ void hns_set_led_opt(struct hns_mac_cb *mac_cb)
 int hns_cpld_led_set_id(struct hns_mac_cb *mac_cb,
 			enum hnae_led_state status)
 {
-	if (!mac_cb || !mac_cb->cpld_ctrl)
+	if (!mac_cb)
 		return 0;
 
 	return mac_cb->dsaf_dev->misc_op->cpld_set_led_id(mac_cb, status);
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
index 408b63f..ca247c2 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
@@ -18,6 +18,7 @@ enum _dsm_op_index {
 	HNS_OP_LED_SET_FUNC             = 0x3,
 	HNS_OP_GET_PORT_TYPE_FUNC       = 0x4,
 	HNS_OP_GET_SFP_STAT_FUNC        = 0x5,
+	HNS_OP_LOCATE_LED_SET_FUNC      = 0x6,
 };
 
 enum _dsm_rst_type {
@@ -81,6 +82,33 @@ static void hns_dsaf_acpi_ledctrl_by_port(struct hns_mac_cb *mac_cb, u8 op_type,
        ACPI_FREE(obj);
 }
 
+static void hns_dsaf_acpi_locate_ledctrl_by_port(struct hns_mac_cb *mac_cb,
+						 u8 op_type, u32 locate,
+						 u32 port)
+{
+	union acpi_object obj_args[2], argv4;
+	union acpi_object *obj;
+
+	obj_args[0].integer.type = ACPI_TYPE_INTEGER;
+	obj_args[0].integer.value = locate;
+	obj_args[1].integer.type = ACPI_TYPE_INTEGER;
+	obj_args[1].integer.value = port;
+
+	argv4.type = ACPI_TYPE_PACKAGE;
+	argv4.package.count = 2;
+	argv4.package.elements = obj_args;
+
+	obj = acpi_evaluate_dsm(ACPI_HANDLE(mac_cb->dev),
+				&hns_dsaf_acpi_dsm_guid, 0, op_type, &argv4);
+	if (!obj) {
+		dev_err(mac_cb->dev, "ledctrl fail, locate:%d port:%d!\n",
+			locate, port);
+		return;
+	}
+
+	ACPI_FREE(obj);
+}
+
 static void hns_cpld_set_led(struct hns_mac_cb *mac_cb, int link_status,
 			     u16 speed, int data)
 {
@@ -160,6 +188,9 @@ static void cpld_led_reset_acpi(struct hns_mac_cb *mac_cb)
 static int cpld_set_led_id(struct hns_mac_cb *mac_cb,
 			   enum hnae_led_state status)
 {
+	if (!mac_cb->cpld_ctrl)
+		return 0;
+
 	switch (status) {
 	case HNAE_LED_ACTIVE:
 		mac_cb->cpld_led_value =
@@ -184,6 +215,30 @@ static int cpld_set_led_id(struct hns_mac_cb *mac_cb,
 	return 0;
 }
 
+static int cpld_set_led_id_acpi(struct hns_mac_cb *mac_cb,
+				enum hnae_led_state status)
+{
+	switch (status) {
+	case HNAE_LED_ACTIVE:
+		hns_dsaf_acpi_locate_ledctrl_by_port(mac_cb,
+						     HNS_OP_LOCATE_LED_SET_FUNC,
+						     CPLD_LED_ON_VALUE,
+						     mac_cb->mac_id);
+		break;
+	case HNAE_LED_INACTIVE:
+		hns_dsaf_acpi_locate_ledctrl_by_port(mac_cb,
+						     HNS_OP_LOCATE_LED_SET_FUNC,
+						     CPLD_LED_DEFAULT_VALUE,
+						     mac_cb->mac_id);
+		break;
+	default:
+		dev_err(mac_cb->dev, "invalid led state: %d!", status);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 #define RESET_REQ_OR_DREQ 1
 
 static void hns_dsaf_acpi_srst_by_port(struct dsaf_device *dsaf_dev, u8 op_type,
@@ -660,7 +715,7 @@ struct dsaf_misc_op *hns_misc_op_get(struct dsaf_device *dsaf_dev)
 	} else if (is_acpi_node(dsaf_dev->dev->fwnode)) {
 		misc_op->cpld_set_led = hns_cpld_set_led_acpi;
 		misc_op->cpld_reset_led = cpld_led_reset_acpi;
-		misc_op->cpld_set_led_id = cpld_set_led_id;
+		misc_op->cpld_set_led_id = cpld_set_led_id_acpi;
 
 		misc_op->dsaf_reset = hns_dsaf_rst_acpi;
 		misc_op->xge_srst = hns_dsaf_xge_srst_by_port_acpi;
-- 
1.9.1