net: dsa: Split platform data to header file

Instead of having net/dsa.h contain both the internal switch tree/driver
structures, split the relevant platform_data parts into
include/linux/platform_data/dsa.h and make that header be included by
net/dsa.h in order not to break any setup. A subsequent set of patches
will update code including net/dsa.h to include only the platform_data
header.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

MAINTAINERS

@@ -10576,6 +10576,7 @@ F:	Documentation/devicetree/bindings/net/dsa/
 F:	net/dsa/
 F:	include/net/dsa.h
 F:	include/linux/dsa/
+F:	include/linux/platform_data/dsa.h
 F:	drivers/net/dsa/
 
 NETWORKING [GENERAL]

include/linux/platform_data/dsa.h

+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __DSA_PDATA_H
+#define __DSA_PDATA_H
+
+struct device;
+struct net_device;
+
+#define DSA_MAX_SWITCHES	4
+#define DSA_MAX_PORTS		12
+#define DSA_RTABLE_NONE		-1
+
+struct dsa_chip_data {
+	/*
+	 * How to access the switch configuration registers.
+	 */
+	struct device	*host_dev;
+	int		sw_addr;
+
+	/*
+	 * Reference to network devices
+	 */
+	struct device	*netdev[DSA_MAX_PORTS];
+
+	/* set to size of eeprom if supported by the switch */
+	int		eeprom_len;
+
+	/* Device tree node pointer for this specific switch chip
+	 * used during switch setup in case additional properties
+	 * and resources needs to be used
+	 */
+	struct device_node *of_node;
+
+	/*
+	 * The names of the switch's ports.  Use "cpu" to
+	 * designate the switch port that the cpu is connected to,
+	 * "dsa" to indicate that this port is a DSA link to
+	 * another switch, NULL to indicate the port is unused,
+	 * or any other string to indicate this is a physical port.
+	 */
+	char		*port_names[DSA_MAX_PORTS];
+	struct device_node *port_dn[DSA_MAX_PORTS];
+
+	/*
+	 * An array of which element [a] indicates which port on this
+	 * switch should be used to send packets to that are destined
+	 * for switch a. Can be NULL if there is only one switch chip.
+	 */
+	s8		rtable[DSA_MAX_SWITCHES];
+};
+
+struct dsa_platform_data {
+	/*
+	 * Reference to a Linux network interface that connects
+	 * to the root switch chip of the tree.
+	 */
+	struct device	*netdev;
+	struct net_device *of_netdev;
+
+	/*
+	 * Info structs describing each of the switch chips
+	 * connected via this network interface.
+	 */
+	int		nr_chips;
+	struct dsa_chip_data	*chip;
+};
+
+
+#endif /* __DSA_PDATA_H */

include/net/dsa.h

@@ -21,6 +21,7 @@
 #include <linux/ethtool.h>
 #include <linux/net_tstamp.h>
 #include <linux/phy.h>
+#include <linux/platform_data/dsa.h>
 #include <net/devlink.h>
 #include <net/switchdev.h>
 
@@ -44,66 +45,6 @@ enum dsa_tag_protocol {
 	DSA_TAG_LAST,		/* MUST BE LAST */
 };
 
-#define DSA_MAX_SWITCHES	4
-#define DSA_MAX_PORTS		12
-
-#define DSA_RTABLE_NONE		-1
-
-struct dsa_chip_data {
-	/*
-	 * How to access the switch configuration registers.
-	 */
-	struct device	*host_dev;
-	int		sw_addr;
-
-	/*
-	 * Reference to network devices
-	 */
-	struct device	*netdev[DSA_MAX_PORTS];
-
-	/* set to size of eeprom if supported by the switch */
-	int		eeprom_len;
-
-	/* Device tree node pointer for this specific switch chip
-	 * used during switch setup in case additional properties
-	 * and resources needs to be used
-	 */
-	struct device_node *of_node;
-
-	/*
-	 * The names of the switch's ports.  Use "cpu" to
-	 * designate the switch port that the cpu is connected to,
-	 * "dsa" to indicate that this port is a DSA link to
-	 * another switch, NULL to indicate the port is unused,
-	 * or any other string to indicate this is a physical port.
-	 */
-	char		*port_names[DSA_MAX_PORTS];
-	struct device_node *port_dn[DSA_MAX_PORTS];
-
-	/*
-	 * An array of which element [a] indicates which port on this
-	 * switch should be used to send packets to that are destined
-	 * for switch a. Can be NULL if there is only one switch chip.
-	 */
-	s8		rtable[DSA_MAX_SWITCHES];
-};
-
-struct dsa_platform_data {
-	/*
-	 * Reference to a Linux network interface that connects
-	 * to the root switch chip of the tree.
-	 */
-	struct device	*netdev;
-	struct net_device *of_netdev;
-
-	/*
-	 * Info structs describing each of the switch chips
-	 * connected via this network interface.
-	 */
-	int		nr_chips;
-	struct dsa_chip_data	*chip;
-};
-
 struct packet_type;
 struct dsa_switch;