stmmac: convert dwmac-sunxi 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

@@ -90,6 +90,16 @@ config DWMAC_STI
 	  device driver. This driver is used on for the STi series
 	  SOCs GMAC ethernet controller.
 
+config DWMAC_SUNXI
+	tristate "Allwinner GMAC support"
+	default ARCH_SUNXI
+	depends on OF
+	---help---
+	  Support for Allwinner A20/A31 GMAC ethernet controllers.
+
+	  This selects Allwinner SoC glue layer support for the
+	  stmmac device driver. This driver is used for A20/A31
+	  GMAC ethernet controller.
 endif
 
 config STMMAC_PCI

drivers/net/ethernet/stmicro/stmmac/Makefile

@@ -11,8 +11,9 @@ obj-$(CONFIG_DWMAC_MESON)	+= dwmac-meson.o
 obj-$(CONFIG_DWMAC_ROCKCHIP)	+= dwmac-rk.o
 obj-$(CONFIG_DWMAC_SOCFPGA)	+= dwmac-socfpga.o
 obj-$(CONFIG_DWMAC_STI)		+= dwmac-sti.o
+obj-$(CONFIG_DWMAC_SUNXI)	+= dwmac-sunxi.o
 obj-$(CONFIG_DWMAC_GENERIC)	+= dwmac-generic.o
-stmmac-platform-objs:= stmmac_platform.o dwmac-sunxi.o \
+stmmac-platform-objs:= stmmac_platform.o
 
 obj-$(CONFIG_STMMAC_PCI) += stmmac-pci.o
 stmmac-pci-objs:= stmmac_pci.o

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

@@ -18,7 +18,9 @@
 
 #include <linux/stmmac.h>
 #include <linux/clk.h>
+#include <linux/module.h>
 #include <linux/phy.h>
+#include <linux/platform_device.h>
 #include <linux/of_net.h>
 #include <linux/regulator/consumer.h>
 
@@ -132,7 +134,7 @@ static void sun7i_fix_speed(void *priv, unsigned int speed)
 
 /* of_data specifying hardware features and callbacks.
  * hardware features were copied from Allwinner drivers. */
-const struct stmmac_of_data sun7i_gmac_data = {
+static const struct stmmac_of_data sun7i_gmac_data = {
 	.has_gmac = 1,
 	.tx_coe = 1,
 	.fix_mac_speed = sun7i_fix_speed,
@@ -140,3 +142,24 @@ const struct stmmac_of_data sun7i_gmac_data = {
 	.init = sun7i_gmac_init,
 	.exit = sun7i_gmac_exit,
 };
+
+static const struct of_device_id sun7i_dwmac_match[] = {
+	{ .compatible = "allwinner,sun7i-a20-gmac", .data = &sun7i_gmac_data},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sun7i_dwmac_match);
+
+static struct platform_driver sun7i_dwmac_driver = {
+	.probe  = stmmac_pltfr_probe,
+	.remove = stmmac_pltfr_remove,
+	.driver = {
+		.name           = "sun7i-dwmac",
+		.pm		= &stmmac_pltfr_pm_ops,
+		.of_match_table = sun7i_dwmac_match,
+	},
+};
+module_platform_driver(sun7i_dwmac_driver);
+
+MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>");
+MODULE_DESCRIPTION("Allwinner sunxi DWMAC specific glue layer");
+MODULE_LICENSE("GPL");

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

@@ -34,7 +34,6 @@
 
 static const struct of_device_id stmmac_dt_ids[] = {
 	/* SoC specific glue layers should come before generic bindings */
-	{ .compatible = "allwinner,sun7i-a20-gmac", .data = &sun7i_gmac_data},
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, stmmac_dt_ids);

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

@@ -23,6 +23,4 @@ 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 sun7i_gmac_data;
-
 #endif /* __STMMAC_PLATFORM_H__ */