bnxt_en: Move hwmon functions into a dedicated file

This is in preparation for upcoming patches in the series.
Driver has to expose more threshold temperatures through the
hwmon sysfs interface. More code will be added and do not
want to overload bnxt.c.

Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: linux-hwmon@vger.kernel.org
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 109 insertions, 75 deletions

diff --git a/drivers/net/ethernet/broadcom/bnxt/Makefile b/drivers/net/ethernet/broadcom/bnxt/Makefile
index 2bc2b707d6ee..ba6c239d52fa 100644
--- a/drivers/net/ethernet/broadcom/bnxt/Makefile
+++ b/drivers/net/ethernet/broadcom/bnxt/Makefile
@@ -4,3 +4,4 @@ obj-$(CONFIG_BNXT) += bnxt_en.o
 bnxt_en-y := bnxt.o bnxt_hwrm.o bnxt_sriov.o bnxt_ethtool.o bnxt_dcb.o bnxt_ulp.o bnxt_xdp.o bnxt_ptp.o bnxt_vfr.o bnxt_devlink.o bnxt_dim.o bnxt_coredump.o
 bnxt_en-$(CONFIG_BNXT_FLOWER_OFFLOAD) += bnxt_tc.o
 bnxt_en-$(CONFIG_DEBUG_FS) += bnxt_debugfs.o
+bnxt_en-$(CONFIG_BNXT_HWMON) += bnxt_hwmon.o
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 785084147994..b83f8de0a015 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -52,8 +52,6 @@
 #include <linux/cpu_rmap.h>
 #include <linux/cpumask.h>
 #include <net/pkt_cls.h>
-#include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
 #include <net/page_pool/helpers.h>
 #include <linux/align.h>
 #include <net/netdev_queues.h>
@@ -71,6 +69,7 @@
 #include "bnxt_tc.h"
 #include "bnxt_devlink.h"
 #include "bnxt_debugfs.h"
+#include "bnxt_hwmon.h"
 
 #define BNXT_TX_TIMEOUT		(5 * HZ)
 #define BNXT_DEF_MSG_ENABLE	(NETIF_MSG_DRV | NETIF_MSG_HW | \
@@ -10250,79 +10249,6 @@ static void bnxt_get_wol_settings(struct bnxt *bp)
 	} while (handle && handle != 0xffff);
 }
 
-#ifdef CONFIG_BNXT_HWMON
-static ssize_t bnxt_show_temp(struct device *dev,
-			      struct device_attribute *devattr, char *buf)
-{
-	struct hwrm_temp_monitor_query_output *resp;
-	struct hwrm_temp_monitor_query_input *req;
-	struct bnxt *bp = dev_get_drvdata(dev);
-	u32 len = 0;
-	int rc;
-
-	rc = hwrm_req_init(bp, req, HWRM_TEMP_MONITOR_QUERY);
-	if (rc)
-		return rc;
-	resp = hwrm_req_hold(bp, req);
-	rc = hwrm_req_send(bp, req);
-	if (!rc)
-		len = sprintf(buf, "%u\n", resp->temp * 1000); /* display millidegree */
-	hwrm_req_drop(bp, req);
-	if (rc)
-		return rc;
-	return len;
-}
-static SENSOR_DEVICE_ATTR(temp1_input, 0444, bnxt_show_temp, NULL, 0);
-
-static struct attribute *bnxt_attrs[] = {
-	&sensor_dev_attr_temp1_input.dev_attr.attr,
-	NULL
-};
-ATTRIBUTE_GROUPS(bnxt);
-
-static void bnxt_hwmon_uninit(struct bnxt *bp)
-{
-	if (bp->hwmon_dev) {
-		hwmon_device_unregister(bp->hwmon_dev);
-		bp->hwmon_dev = NULL;
-	}
-}
-
-static void bnxt_hwmon_init(struct bnxt *bp)
-{
-	struct hwrm_temp_monitor_query_input *req;
-	struct pci_dev *pdev = bp->pdev;
-	int rc;
-
-	rc = hwrm_req_init(bp, req, HWRM_TEMP_MONITOR_QUERY);
-	if (!rc)
-		rc = hwrm_req_send_silent(bp, req);
-	if (rc == -EACCES || rc == -EOPNOTSUPP) {
-		bnxt_hwmon_uninit(bp);
-		return;
-	}
-
-	if (bp->hwmon_dev)
-		return;
-
-	bp->hwmon_dev = hwmon_device_register_with_groups(&pdev->dev,
-							  DRV_MODULE_NAME, bp,
-							  bnxt_groups);
-	if (IS_ERR(bp->hwmon_dev)) {
-		bp->hwmon_dev = NULL;
-		dev_warn(&pdev->dev, "Cannot register hwmon device\n");
-	}
-}
-#else
-static void bnxt_hwmon_uninit(struct bnxt *bp)
-{
-}
-
-static void bnxt_hwmon_init(struct bnxt *bp)
-{
-}
-#endif
-
 static bool bnxt_eee_config_ok(struct bnxt *bp)
 {
 	struct ethtool_eee *eee = &bp->eee;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.c
new file mode 100644
index 000000000000..476616d97071
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.c
@@ -0,0 +1,82 @@
+/* Broadcom NetXtreme-C/E network driver.
+ *
+ * Copyright (c) 2023 Broadcom Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation.
+ */
+
+#include <linux/dev_printk.h>
+#include <linux/errno.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/pci.h>
+
+#include "bnxt_hsi.h"
+#include "bnxt.h"
+#include "bnxt_hwrm.h"
+#include "bnxt_hwmon.h"
+
+static ssize_t bnxt_show_temp(struct device *dev,
+			      struct device_attribute *devattr, char *buf)
+{
+	struct hwrm_temp_monitor_query_output *resp;
+	struct hwrm_temp_monitor_query_input *req;
+	struct bnxt *bp = dev_get_drvdata(dev);
+	u32 len = 0;
+	int rc;
+
+	rc = hwrm_req_init(bp, req, HWRM_TEMP_MONITOR_QUERY);
+	if (rc)
+		return rc;
+	resp = hwrm_req_hold(bp, req);
+	rc = hwrm_req_send(bp, req);
+	if (!rc)
+		len = sprintf(buf, "%u\n", resp->temp * 1000); /* display millidegree */
+	hwrm_req_drop(bp, req);
+	if (rc)
+		return rc;
+	return len;
+}
+static SENSOR_DEVICE_ATTR(temp1_input, 0444, bnxt_show_temp, NULL, 0);
+
+static struct attribute *bnxt_attrs[] = {
+	&sensor_dev_attr_temp1_input.dev_attr.attr,
+	NULL
+};
+ATTRIBUTE_GROUPS(bnxt);
+
+void bnxt_hwmon_uninit(struct bnxt *bp)
+{
+	if (bp->hwmon_dev) {
+		hwmon_device_unregister(bp->hwmon_dev);
+		bp->hwmon_dev = NULL;
+	}
+}
+
+void bnxt_hwmon_init(struct bnxt *bp)
+{
+	struct hwrm_temp_monitor_query_input *req;
+	struct pci_dev *pdev = bp->pdev;
+	int rc;
+
+	rc = hwrm_req_init(bp, req, HWRM_TEMP_MONITOR_QUERY);
+	if (!rc)
+		rc = hwrm_req_send_silent(bp, req);
+	if (rc == -EACCES || rc == -EOPNOTSUPP) {
+		bnxt_hwmon_uninit(bp);
+		return;
+	}
+
+	if (bp->hwmon_dev)
+		return;
+
+	bp->hwmon_dev = hwmon_device_register_with_groups(&pdev->dev,
+							  DRV_MODULE_NAME, bp,
+							  bnxt_groups);
+	if (IS_ERR(bp->hwmon_dev)) {
+		bp->hwmon_dev = NULL;
+		dev_warn(&pdev->dev, "Cannot register hwmon device\n");
+	}
+}
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.h
new file mode 100644
index 000000000000..af310066687c
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.h
@@ -0,0 +1,25 @@
+/* Broadcom NetXtreme-C/E network driver.
+ *
+ * Copyright (c) 2023 Broadcom Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef BNXT_HWMON_H
+#define BNXT_HWMON_H
+
+#ifdef CONFIG_BNXT_HWMON
+void bnxt_hwmon_uninit(struct bnxt *bp);
+void bnxt_hwmon_init(struct bnxt *bp);
+#else
+static inline void bnxt_hwmon_uninit(struct bnxt *bp)
+{
+}
+
+static inline void bnxt_hwmon_init(struct bnxt *bp)
+{
+}
+#endif
+#endif