stmmac: convert dwmac-meson to platform driver

Convert platform glue layer into a proper platform
driver and add it to the build system.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/Kconfig

@@ -44,6 +44,17 @@ config DWMAC_LPC18XX
 	---help---
 	  Support for NXP LPC18xx/43xx DWMAC Ethernet.
 
+config DWMAC_MESON
+	tristate "Amlogic Meson dwmac support"
+	default ARCH_MESON
+	depends on OF
+	help
+	  Support for Ethernet controller on Amlogic Meson SoCs.
+
+	  This selects the Amlogic Meson SoC glue layer support for
+	  the stmmac device driver. This driver is used for Meson6 and
+	  Meson8 SoCs.
+
 endif
 
 config STMMAC_PCI

drivers/net/ethernet/stmicro/stmmac/Makefile

@@ -7,8 +7,9 @@ stmmac-objs:= stmmac_main.o stmmac_ethtool.o stmmac_mdio.o ring_mode.o	\
 # Ordering matters. Generic driver must be last.
 obj-$(CONFIG_STMMAC_PLATFORM)	+= stmmac-platform.o
 obj-$(CONFIG_DWMAC_LPC18XX)	+= dwmac-lpc18xx.o
+obj-$(CONFIG_DWMAC_MESON)	+= dwmac-meson.o
 obj-$(CONFIG_DWMAC_GENERIC)	+= dwmac-generic.o
-stmmac-platform-objs:= stmmac_platform.o dwmac-meson.o dwmac-sunxi.o	\
+stmmac-platform-objs:= stmmac_platform.o dwmac-sunxi.o \
 		       dwmac-sti.o dwmac-socfpga.o dwmac-rk.o		\
 
 obj-$(CONFIG_STMMAC_PCI) += stmmac-pci.o

drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c

@@ -15,6 +15,7 @@
 #include <linux/ethtool.h>
 #include <linux/io.h>
 #include <linux/ioport.h>
+#include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/stmmac.h>
 
@@ -63,7 +64,28 @@ static void *meson6_dwmac_setup(struct platform_device *pdev)
 	return dwmac;
 }
 
-const struct stmmac_of_data meson6_dwmac_data = {
+static const struct stmmac_of_data meson6_dwmac_data = {
 	.setup		= meson6_dwmac_setup,
 	.fix_mac_speed	= meson6_dwmac_fix_mac_speed,
 };
+
+static const struct of_device_id meson6_dwmac_match[] = {
+	{ .compatible = "amlogic,meson6-dwmac", .data = &meson6_dwmac_data},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, meson6_dwmac_match);
+
+static struct platform_driver meson6_dwmac_driver = {
+	.probe  = stmmac_pltfr_probe,
+	.remove = stmmac_pltfr_remove,
+	.driver = {
+		.name           = "meson6-dwmac",
+		.pm		= &stmmac_pltfr_pm_ops,
+		.of_match_table = meson6_dwmac_match,
+	},
+};
+module_platform_driver(meson6_dwmac_driver);
+
+MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>");
+MODULE_DESCRIPTION("Amlogic Meson DWMAC glue layer");
+MODULE_LICENSE("GPL v2");

drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c

@@ -35,7 +35,6 @@
 static const struct of_device_id stmmac_dt_ids[] = {
 	/* SoC specific glue layers should come before generic bindings */
 	{ .compatible = "rockchip,rk3288-gmac", .data = &rk3288_gmac_data},
-	{ .compatible = "amlogic,meson6-dwmac", .data = &meson6_dwmac_data},
 	{ .compatible = "allwinner,sun7i-a20-gmac", .data = &sun7i_gmac_data},
 	{ .compatible = "st,stih415-dwmac", .data = &stih4xx_dwmac_data},
 	{ .compatible = "st,stih416-dwmac", .data = &stih4xx_dwmac_data},

drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h

@@ -23,7 +23,6 @@ int stmmac_pltfr_probe(struct platform_device *pdev);
 int stmmac_pltfr_remove(struct platform_device *pdev);
 extern const struct dev_pm_ops stmmac_pltfr_pm_ops;
 
-extern const struct stmmac_of_data meson6_dwmac_data;
 extern const struct stmmac_of_data sun7i_gmac_data;
 extern const struct stmmac_of_data stih4xx_dwmac_data;
 extern const struct stmmac_of_data stid127_dwmac_data;