stmmac: add dwmac glue for NXP 18xx/43xx family (d58617ea) · Commits · 戴 / test

drivers/net/ethernet/stmicro/stmmac/Makefile

+2 −1

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		@@ -6,7 +6,8 @@ stmmac-objs:= stmmac_main.o stmmac_ethtool.o stmmac_mdio.o ring_mode.o \

		obj-$(CONFIG_STMMAC_PLATFORM) += stmmac-platform.o
		stmmac-platform-objs:= stmmac_platform.o dwmac-meson.o dwmac-sunxi.o \
		dwmac-sti.o dwmac-socfpga.o dwmac-rk.o
		dwmac-sti.o dwmac-socfpga.o dwmac-rk.o \
		dwmac-lpc18xx.o

		obj-$(CONFIG_STMMAC_PCI) += stmmac-pci.o
		stmmac-pci-objs:= stmmac_pci.o

drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c

0 → 100644

+74 −0

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		/*
		* DWMAC glue for NXP LPC18xx/LPC43xx Ethernet
		*
		* Copyright (C) 2015 Joachim Eastwood <manabian@gmail.com>
		*
		* This file is licensed under the terms of the GNU General Public
		* License version 2. This program is licensed "as is" without any
		* warranty of any kind, whether express or implied.
		*/

		#include <linux/mfd/syscon.h>
		#include <linux/of.h>
		#include <linux/of_net.h>
		#include <linux/phy.h>
		#include <linux/regmap.h>
		#include <linux/stmmac.h>

		/* Register defines for CREG syscon */
		#define LPC18XX_CREG_CREG6 0x12c
		# define LPC18XX_CREG_CREG6_ETHMODE_MASK 0x7
		# define LPC18XX_CREG_CREG6_ETHMODE_MII 0x0
		# define LPC18XX_CREG_CREG6_ETHMODE_RMII 0x4

		struct lpc18xx_dwmac_priv_data {
		struct regmap *reg;
		int interface;
		};

		static void lpc18xx_dwmac_setup(struct platform_device pdev)
		{
		struct lpc18xx_dwmac_priv_data *dwmac;

		dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);
		if (!dwmac)
		return ERR_PTR(-ENOMEM);

		dwmac->interface = of_get_phy_mode(pdev->dev.of_node);
		if (dwmac->interface < 0)
		return ERR_PTR(dwmac->interface);

		dwmac->reg = syscon_regmap_lookup_by_compatible("nxp,lpc1850-creg");
		if (IS_ERR(dwmac->reg)) {
		dev_err(&pdev->dev, "Syscon lookup failed\n");
		return dwmac->reg;
		}

		return dwmac;
		}

		static int lpc18xx_dwmac_init(struct platform_device pdev, void priv)
		{
		struct lpc18xx_dwmac_priv_data *dwmac = priv;
		u8 ethmode;

		if (dwmac->interface == PHY_INTERFACE_MODE_MII) {
		ethmode = LPC18XX_CREG_CREG6_ETHMODE_MII;
		} else if (dwmac->interface == PHY_INTERFACE_MODE_RMII) {
		ethmode = LPC18XX_CREG_CREG6_ETHMODE_RMII;
		} else {
		dev_err(&pdev->dev, "Only MII and RMII mode supported\n");
		return -EINVAL;
		}

		regmap_update_bits(dwmac->reg, LPC18XX_CREG_CREG6,
		LPC18XX_CREG_CREG6_ETHMODE_MASK, ethmode);

		return 0;
		}

		const struct stmmac_of_data lpc18xx_dwmac_data = {
		.has_gmac = 1,
		.setup = lpc18xx_dwmac_setup,
		.init = lpc18xx_dwmac_init,
		};

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

+1 −0

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		@@ -37,6 +37,7 @@ static const struct of_device_id stmmac_dt_ids[] = {
		{ .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 = "nxp,lpc1850-dwmac", .data = &lpc18xx_dwmac_data},
		{ .compatible = "st,stih415-dwmac", .data = &stih4xx_dwmac_data},
		{ .compatible = "st,stih416-dwmac", .data = &stih4xx_dwmac_data},
		{ .compatible = "st,stid127-dwmac", .data = &stid127_dwmac_data},

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

+1 −0

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		@@ -19,6 +19,7 @@
		#ifndef __STMMAC_PLATFORM_H__
		#define __STMMAC_PLATFORM_H__

		extern const struct stmmac_of_data lpc18xx_dwmac_data;
		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;

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