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Date: Fri, 26 Apr 2019 09:47:42 +0000
From: Igor Russkikh <Igor.Russkikh@...antia.com>
To: "David S . Miller" <davem@...emloft.net>
CC: "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
Nikita Danilov <Nikita.Danilov@...antia.com>,
Dmitry Bogdanov <Dmitry.Bogdanov@...antia.com>,
Igor Russkikh <Igor.Russkikh@...antia.com>,
Yana Esina <yana.esina@...antia.com>
Subject: [PATCH v3 net-next 02/15] net: aquantia: implement hwmon api for chip
temperature
From: Yana Esina <yana.esina@...antia.com>
Added support for hwmon api to fetch out chip temperature
Signed-off-by: Yana Esina <yana.esina@...antia.com>
Signed-off-by: Nikita Danilov <nikita.danilov@...antia.com>
Signed-off-by: Igor Russkikh <igor.russkikh@...antia.com>
---
.../net/ethernet/aquantia/atlantic/Makefile | 1 +
.../ethernet/aquantia/atlantic/aq_drvinfo.c | 129 ++++++++++++++++++
.../ethernet/aquantia/atlantic/aq_drvinfo.h | 16 +++
.../ethernet/aquantia/atlantic/aq_pci_func.c | 4 +
4 files changed, 150 insertions(+)
create mode 100644 drivers/net/ethernet/aquantia/atlantic/aq_drvinfo.c
create mode 100644 drivers/net/ethernet/aquantia/atlantic/aq_drvinfo.h
diff --git a/drivers/net/ethernet/aquantia/atlantic/Makefile b/drivers/net/ethernet/aquantia/atlantic/Makefile
index 4556630ee286..1f99cf832476 100644
--- a/drivers/net/ethernet/aquantia/atlantic/Makefile
+++ b/drivers/net/ethernet/aquantia/atlantic/Makefile
@@ -36,6 +36,7 @@ atlantic-objs := aq_main.o \
aq_ring.o \
aq_hw_utils.o \
aq_ethtool.o \
+ aq_drvinfo.o \
aq_filters.o \
hw_atl/hw_atl_a0.o \
hw_atl/hw_atl_b0.o \
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_drvinfo.c b/drivers/net/ethernet/aquantia/atlantic/aq_drvinfo.c
new file mode 100644
index 000000000000..0a4a20bb6a82
--- /dev/null
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_drvinfo.c
@@ -0,0 +1,129 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* Copyright (C) 2014-2019 aQuantia Corporation. */
+
+/* File aq_drvinfo.c: Definition of common code for firmware info in sys.*/
+
+#include <linux/init.h>
+#include <linux/kobject.h>
+#include <linux/module.h>
+#include <linux/stat.h>
+#include <linux/string.h>
+#include <linux/hwmon.h>
+#include <linux/uaccess.h>
+
+#include "aq_drvinfo.h"
+
+static int aq_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long *value)
+{
+ struct aq_nic_s *aq_nic = dev_get_drvdata(dev);
+ int temp;
+ int err;
+
+ if (!aq_nic)
+ return -EIO;
+
+ if (type != hwmon_temp)
+ return -EOPNOTSUPP;
+
+ if (!aq_nic->aq_fw_ops->get_phy_temp)
+ return -EOPNOTSUPP;
+
+ switch (attr) {
+ case hwmon_temp_input:
+ err = aq_nic->aq_fw_ops->get_phy_temp(aq_nic->aq_hw, &temp);
+ *value = temp;
+ return err;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int aq_hwmon_read_string(struct device *dev,
+ enum hwmon_sensor_types type,
+ u32 attr, int channel, const char **str)
+{
+ struct aq_nic_s *aq_nic = dev_get_drvdata(dev);
+
+ if (!aq_nic)
+ return -EIO;
+
+ if (type != hwmon_temp)
+ return -EOPNOTSUPP;
+
+ if (!aq_nic->aq_fw_ops->get_phy_temp)
+ return -EOPNOTSUPP;
+
+ switch (attr) {
+ case hwmon_temp_label:
+ *str = "PHY Temperature";
+ return 0;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static umode_t aq_hwmon_is_visible(const void *data,
+ enum hwmon_sensor_types type,
+ u32 attr, int channel)
+{
+ if (type != hwmon_temp)
+ return 0;
+
+ switch (attr) {
+ case hwmon_temp_input:
+ case hwmon_temp_label:
+ return 0444;
+ default:
+ return 0;
+ }
+}
+
+static const struct hwmon_ops aq_hwmon_ops = {
+ .is_visible = aq_hwmon_is_visible,
+ .read = aq_hwmon_read,
+ .read_string = aq_hwmon_read_string,
+};
+
+static u32 aq_hwmon_temp_config[] = {
+ HWMON_T_INPUT | HWMON_T_LABEL,
+ 0,
+};
+
+static const struct hwmon_channel_info aq_hwmon_temp = {
+ .type = hwmon_temp,
+ .config = aq_hwmon_temp_config,
+};
+
+static const struct hwmon_channel_info *aq_hwmon_info[] = {
+ &aq_hwmon_temp,
+ NULL,
+};
+
+static const struct hwmon_chip_info aq_hwmon_chip_info = {
+ .ops = &aq_hwmon_ops,
+ .info = aq_hwmon_info,
+};
+
+int aq_drvinfo_init(struct net_device *ndev)
+{
+ struct aq_nic_s *aq_nic = netdev_priv(ndev);
+ struct device *dev = &aq_nic->pdev->dev;
+ struct device *hwmon_dev;
+ int err = 0;
+
+ hwmon_dev = devm_hwmon_device_register_with_info(dev,
+ ndev->name,
+ aq_nic,
+ &aq_hwmon_chip_info,
+ NULL);
+
+ if (IS_ERR(hwmon_dev))
+ err = PTR_ERR(hwmon_dev);
+
+ return err;
+}
+
+void aq_drvinfo_exit(struct net_device *ndev)
+{
+}
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_drvinfo.h b/drivers/net/ethernet/aquantia/atlantic/aq_drvinfo.h
new file mode 100644
index 000000000000..4adb1f84f550
--- /dev/null
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_drvinfo.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* Copyright (C) 2014-2017 aQuantia Corporation. */
+
+/* File aq_drvinfo.h: Declaration of common code for firmware info in sys.*/
+
+#ifndef AQ_DRVINFO_H
+#define AQ_DRVINFO_H
+
+#include "aq_nic.h"
+#include "aq_hw.h"
+#include "hw_atl/hw_atl_utils.h"
+
+int aq_drvinfo_init(struct net_device *ndev);
+void aq_drvinfo_exit(struct net_device *ndev);
+
+#endif /* AQ_DRVINFO_H */
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c b/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c
index 0217ff4669a4..556b735e5a32 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c
@@ -20,6 +20,7 @@
#include "hw_atl/hw_atl_a0.h"
#include "hw_atl/hw_atl_b0.h"
#include "aq_filters.h"
+#include "aq_drvinfo.h"
static const struct pci_device_id aq_pci_tbl[] = {
{ PCI_VDEVICE(AQUANTIA, AQ_DEVICE_ID_0001), },
@@ -289,6 +290,8 @@ static int aq_pci_probe(struct pci_dev *pdev,
if (err < 0)
goto err_register;
+ aq_drvinfo_init(ndev);
+
return 0;
err_register:
@@ -317,6 +320,7 @@ static void aq_pci_remove(struct pci_dev *pdev)
unregister_netdev(self->ndev);
aq_nic_free_vectors(self);
aq_pci_free_irq_vectors(self);
+ aq_drvinfo_exit(self->ndev);
iounmap(self->aq_hw->mmio);
kfree(self->aq_hw);
pci_release_regions(pdev);
--
2.17.1
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