netdev - [PATCH net-next 1/3] net: phy: add phy_interface

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Message-Id: <E1mfJLF-001KXN-JN@rmk-PC.armlinux.org.uk>
Date:   Tue, 26 Oct 2021 11:06:01 +0100
From:   "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To:     Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Sean Anderson <sean.anderson@...o.com>
Cc:     netdev@...r.kernel.org
Subject: [PATCH net-next 1/3] net: phy: add phy_interface_t bitmap support

Add support for a bitmap for phy interface modes, which includes:
- a macro to declare the interface bitmap
- an inline helper to zero the interface bitmap
- an inline helper to detect an empty interface bitmap
- inline helpers to do a bitwise AND and OR operations on two interface
  bitmaps

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 include/linux/phy.h | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/include/linux/phy.h b/include/linux/phy.h
index 04e90423fa88..96e43fbb2dd8 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -155,6 +155,40 @@ typedef enum {
 	PHY_INTERFACE_MODE_MAX,
 } phy_interface_t;
 
+/* PHY interface mode bitmap handling */
+#define DECLARE_PHY_INTERFACE_MASK(name) \
+	DECLARE_BITMAP(name, PHY_INTERFACE_MODE_MAX)
+
+static inline void phy_interface_zero(unsigned long *intf)
+{
+	bitmap_zero(intf, PHY_INTERFACE_MODE_MAX);
+}
+
+static inline bool phy_interface_empty(const unsigned long *intf)
+{
+	return bitmap_empty(intf, PHY_INTERFACE_MODE_MAX);
+}
+
+static inline void phy_interface_and(unsigned long *dst, const unsigned long *a,
+				     const unsigned long *b)
+{
+	bitmap_and(dst, a, b, PHY_INTERFACE_MODE_MAX);
+}
+
+static inline void phy_interface_or(unsigned long *dst, const unsigned long *a,
+				    const unsigned long *b)
+{
+	bitmap_or(dst, a, b, PHY_INTERFACE_MODE_MAX);
+}
+
+static inline void phy_interface_set_rgmii(unsigned long *intf)
+{
+	__set_bit(PHY_INTERFACE_MODE_RGMII, intf);
+	__set_bit(PHY_INTERFACE_MODE_RGMII_ID, intf);
+	__set_bit(PHY_INTERFACE_MODE_RGMII_RXID, intf);
+	__set_bit(PHY_INTERFACE_MODE_RGMII_TXID, intf);
+}
+
 /*
  * phy_supported_speeds - return all speeds currently supported by a PHY device
  */
-- 
2.30.2