stmmac: convert dwmac-socfpga 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

@@ -66,6 +66,18 @@ config DWMAC_ROCKCHIP
 	  This selects the Rockchip RK3288 SoC glue layer support for
 	  the stmmac device driver.
 
+config DWMAC_SOCFPGA
+	tristate "SOCFPGA dwmac support"
+	default ARCH_SOCFPGA
+	depends on OF
+	select MFD_SYSCON
+	help
+	  Support for ethernet controller on Altera SOCFPGA
+
+	  This selects the Altera SOCFPGA SoC glue layer support
+	  for the stmmac device driver. This driver is used for
+	  arria5 and cyclone5 FPGA SoCs.
+
 endif
 
 config STMMAC_PCI

drivers/net/ethernet/stmicro/stmmac/Makefile

@@ -9,9 +9,10 @@ obj-$(CONFIG_STMMAC_PLATFORM)	+= stmmac-platform.o
 obj-$(CONFIG_DWMAC_LPC18XX)	+= dwmac-lpc18xx.o
 obj-$(CONFIG_DWMAC_MESON)	+= dwmac-meson.o
 obj-$(CONFIG_DWMAC_ROCKCHIP)	+= dwmac-rk.o
+obj-$(CONFIG_DWMAC_SOCFPGA)	+= dwmac-socfpga.o
 obj-$(CONFIG_DWMAC_GENERIC)	+= dwmac-generic.o
 stmmac-platform-objs:= stmmac_platform.o dwmac-sunxi.o \
-		       dwmac-sti.o dwmac-socfpga.o
+		       dwmac-sti.o
 
 obj-$(CONFIG_STMMAC_PCI) += stmmac-pci.o
 stmmac-pci-objs:= stmmac_pci.o

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

@@ -257,9 +257,28 @@ static int socfpga_dwmac_init(struct platform_device *pdev, void *priv)
 	return ret;
 }
 
-const struct stmmac_of_data socfpga_gmac_data = {
+static const struct stmmac_of_data socfpga_gmac_data = {
 	.setup = socfpga_dwmac_probe,
 	.init = socfpga_dwmac_init,
 	.exit = socfpga_dwmac_exit,
 	.fix_mac_speed = socfpga_dwmac_fix_mac_speed,
 };
+
+static const struct of_device_id socfpga_dwmac_match[] = {
+	{ .compatible = "altr,socfpga-stmmac", .data = &socfpga_gmac_data },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, socfpga_dwmac_match);
+
+static struct platform_driver socfpga_dwmac_driver = {
+	.probe  = stmmac_pltfr_probe,
+	.remove = stmmac_pltfr_remove,
+	.driver = {
+		.name           = "socfpga-dwmac",
+		.pm		= &stmmac_pltfr_pm_ops,
+		.of_match_table = socfpga_dwmac_match,
+	},
+};
+module_platform_driver(socfpga_dwmac_driver);
+
+MODULE_LICENSE("GPL v2");

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

@@ -39,7 +39,6 @@ static const struct of_device_id stmmac_dt_ids[] = {
 	{ .compatible = "st,stih416-dwmac", .data = &stih4xx_dwmac_data},
 	{ .compatible = "st,stid127-dwmac", .data = &stid127_dwmac_data},
 	{ .compatible = "st,stih407-dwmac", .data = &stih4xx_dwmac_data},
-	{ .compatible = "altr,socfpga-stmmac", .data = &socfpga_gmac_data },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, stmmac_dt_ids);

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

@@ -26,6 +26,5 @@ extern const struct dev_pm_ops stmmac_pltfr_pm_ops;
 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;
-extern const struct stmmac_of_data socfpga_gmac_data;
 
 #endif /* __STMMAC_PLATFORM_H__ */