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From: Christian Marangi <ansuelsmth@gmail.com>
To: Andrew Lunn <andrew@lunn.ch>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Russell King <linux@armlinux.org.uk>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>,
	Paolo Abeni <pabeni@redhat.com>,
	netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org
Cc: Christian Marangi <ansuelsmth@gmail.com>
Subject: [net-next PATCH v2 2/3] net: phy: add simple helper to return count of supported speeds
Date: Thu, 14 Dec 2023 16:49:05 +0100
Message-Id: <20231214154906.29436-3-ansuelsmth@gmail.com>
In-Reply-To: <20231214154906.29436-1-ansuelsmth@gmail.com>
References: <20231214154906.29436-1-ansuelsmth@gmail.com>
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Add simple helper to return count of supported speeds for the passed PHY
device.

This can be useful to know the number of speed modes to dynamically
allocate a speed array for it.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
 drivers/net/phy/phy.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index a5fa077650e8..311560e72126 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -229,6 +229,18 @@ phy_find_valid(int speed, int duplex, unsigned long *supported)
 	return phy_lookup_setting(speed, duplex, supported, false);
 }
 
+/**
+ * phy_supported_speeds_num - return the number of all speeds currently
+ *			      supported by a phy device
+ * @phy: The phy device to return supported speeds of.
+ *
+ * Description: Returns the number of supported speeds.
+ */
+unsigned int phy_supported_speeds_num(struct phy_device *phy)
+{
+	return phy_speeds(NULL, 0, phy->supported);
+}
+
 /**
  * phy_supported_speeds - return all speeds currently supported by a phy device
  * @phy: The phy device to return supported speeds of.
-- 
2.40.1