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Message-Id: <20240409-feature_poe-v7-5-11e38efd4dee@bootlin.com>
Date: Tue, 09 Apr 2024 17:03:55 +0200
From: Kory Maincent <kory.maincent@...tlin.com>
To: "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, Jonathan Corbet <corbet@....net>,
Luis Chamberlain <mcgrof@...nel.org>, Russ Weight <russ.weight@...ux.dev>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Rafael J. Wysocki" <rafael@...nel.org>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Oleksij Rempel <o.rempel@...gutronix.de>, Mark Brown <broonie@...nel.org>,
Frank Rowand <frowand.list@...il.com>, Andrew Lunn <andrew@...n.ch>,
Heiner Kallweit <hkallweit1@...il.com>,
Russell King <linux@...linux.org.uk>
Cc: Thomas Petazzoni <thomas.petazzoni@...tlin.com>, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
devicetree@...r.kernel.org, Dent Project <dentproject@...uxfoundation.org>,
kernel@...gutronix.de, Maxime Chevallier <maxime.chevallier@...tlin.com>,
Kory Maincent <kory.maincent@...tlin.com>
Subject: [PATCH net-next v7 05/17] net: pse-pd: Introduce PSE types
enumeration
From: Kory Maincent (Dent Project) <kory.maincent@...tlin.com>
Introduce an enumeration to define PSE types (C33 or PoDL),
utilizing a bitfield for potential future support of both types.
Include 'pse_get_types' helper for external access to PSE type info.
Reviewed-by: Andrew Lunn <andrew@...n.ch>
Signed-off-by: Kory Maincent <kory.maincent@...tlin.com>
---
Changes in v2:
- Rename PSE_POE to PSE_C33 to have naming consistency.
- Use "static inline" instead of simple static in the header
Changes in v3:
- Move the pse_type enum in uapi.
- Replace pse_get_types helper by pse_has_podl and pse_has_c33.
Changes in v5:
- Move the pse types enum in ethtool.
- Add ethtool prefix to the value.
Changes in v6:
- Fix a kdoc nit.
---
drivers/net/pse-pd/pse_core.c | 12 ++++++++++++
drivers/net/pse-pd/pse_regulator.c | 1 +
include/linux/pse-pd/pse.h | 15 +++++++++++++++
include/uapi/linux/ethtool.h | 12 ++++++++++++
4 files changed, 40 insertions(+)
diff --git a/drivers/net/pse-pd/pse_core.c b/drivers/net/pse-pd/pse_core.c
index 146b81f08a89..fed006cbc185 100644
--- a/drivers/net/pse-pd/pse_core.c
+++ b/drivers/net/pse-pd/pse_core.c
@@ -312,3 +312,15 @@ int pse_ethtool_set_config(struct pse_control *psec,
return err;
}
EXPORT_SYMBOL_GPL(pse_ethtool_set_config);
+
+bool pse_has_podl(struct pse_control *psec)
+{
+ return psec->pcdev->types & ETHTOOL_PSE_PODL;
+}
+EXPORT_SYMBOL_GPL(pse_has_podl);
+
+bool pse_has_c33(struct pse_control *psec)
+{
+ return psec->pcdev->types & ETHTOOL_PSE_C33;
+}
+EXPORT_SYMBOL_GPL(pse_has_c33);
diff --git a/drivers/net/pse-pd/pse_regulator.c b/drivers/net/pse-pd/pse_regulator.c
index 1dedf4de296e..547af384764b 100644
--- a/drivers/net/pse-pd/pse_regulator.c
+++ b/drivers/net/pse-pd/pse_regulator.c
@@ -116,6 +116,7 @@ pse_reg_probe(struct platform_device *pdev)
priv->pcdev.owner = THIS_MODULE;
priv->pcdev.ops = &pse_reg_ops;
priv->pcdev.dev = dev;
+ priv->pcdev.types = ETHTOOL_PSE_PODL;
ret = devm_pse_controller_register(dev, &priv->pcdev);
if (ret) {
dev_err(dev, "failed to register PSE controller (%pe)\n",
diff --git a/include/linux/pse-pd/pse.h b/include/linux/pse-pd/pse.h
index be4e5754eb24..19589571157f 100644
--- a/include/linux/pse-pd/pse.h
+++ b/include/linux/pse-pd/pse.h
@@ -77,6 +77,7 @@ struct pse_control;
* device tree to id as given to the PSE control ops
* @nr_lines: number of PSE controls in this controller device
* @lock: Mutex for serialization access to the PSE controller
+ * @types: types of the PSE controller
*/
struct pse_controller_dev {
const struct pse_controller_ops *ops;
@@ -89,6 +90,7 @@ struct pse_controller_dev {
const struct of_phandle_args *pse_spec);
unsigned int nr_lines;
struct mutex lock;
+ enum ethtool_pse_types types;
};
#if IS_ENABLED(CONFIG_PSE_CONTROLLER)
@@ -108,6 +110,9 @@ int pse_ethtool_set_config(struct pse_control *psec,
struct netlink_ext_ack *extack,
const struct pse_control_config *config);
+bool pse_has_podl(struct pse_control *psec);
+bool pse_has_c33(struct pse_control *psec);
+
#else
static inline struct pse_control *of_pse_control_get(struct device_node *node)
@@ -133,6 +138,16 @@ static inline int pse_ethtool_set_config(struct pse_control *psec,
return -ENOTSUPP;
}
+static inline bool pse_has_podl(struct pse_control *psec)
+{
+ return false;
+}
+
+static inline bool pse_has_c33(struct pse_control *psec)
+{
+ return false;
+}
+
#endif
#endif
diff --git a/include/uapi/linux/ethtool.h b/include/uapi/linux/ethtool.h
index 29ac06d66228..baf2b8e0d72f 100644
--- a/include/uapi/linux/ethtool.h
+++ b/include/uapi/linux/ethtool.h
@@ -752,6 +752,18 @@ enum ethtool_module_power_mode {
ETHTOOL_MODULE_POWER_MODE_HIGH,
};
+/**
+ * enum ethtool_pse_types - Types of PSE controller.
+ * @ETHTOOL_PSE_UNKNOWN: Type of PSE controller is unknown
+ * @ETHTOOL_PSE_PODL: PSE controller which support PoDL
+ * @ETHTOOL_PSE_C33: PSE controller which support Clause 33 (PoE)
+ */
+enum ethtool_pse_types {
+ ETHTOOL_PSE_UNKNOWN = 1 << 0,
+ ETHTOOL_PSE_PODL = 1 << 1,
+ ETHTOOL_PSE_C33 = 1 << 2,
+};
+
/**
* enum ethtool_c33_pse_admin_state - operational state of the PoDL PSE
* functions. IEEE 802.3-2022 30.9.1.1.2 aPSEAdminState
--
2.34.1
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