The Ethernet controller available in Meson6 and Meson8 SoCs is a Synopsys DesignWare MAC IP core, already supported by the stmmac driver. This glue layer implements some platform-specific settings needed by the Amlogic variant. Signed-off-by: Beniamino Galvani <b.galvani@xxxxxxxxx> --- drivers/net/ethernet/stmicro/stmmac/Kconfig | 10 ++++ drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c | 67 ++++++++++++++++++++++ drivers/net/ethernet/stmicro/stmmac/stmmac.h | 3 + .../net/ethernet/stmicro/stmmac/stmmac_platform.c | 3 + 5 files changed, 84 insertions(+) create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig index 2d09c11..b02d4a3 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig @@ -26,6 +26,16 @@ config STMMAC_PLATFORM If unsure, say N. +config DWMAC_MESON + bool "Amlogic Meson dwmac support" + depends on STMMAC_PLATFORM && ARCH_MESON + 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. + config DWMAC_SOCFPGA bool "SOCFPGA dwmac support" depends on STMMAC_PLATFORM && MFD_SYSCON && (ARCH_SOCFPGA || COMPILE_TEST) diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile index 18695eb..0533d0b 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Makefile +++ b/drivers/net/ethernet/stmicro/stmmac/Makefile @@ -1,6 +1,7 @@ obj-$(CONFIG_STMMAC_ETH) += stmmac.o stmmac-$(CONFIG_STMMAC_PLATFORM) += stmmac_platform.o stmmac-$(CONFIG_STMMAC_PCI) += stmmac_pci.o +stmmac-$(CONFIG_DWMAC_MESON) += dwmac-meson.o stmmac-$(CONFIG_DWMAC_SUNXI) += dwmac-sunxi.o stmmac-$(CONFIG_DWMAC_STI) += dwmac-sti.o stmmac-$(CONFIG_DWMAC_SOCFPGA) += dwmac-socfpga.o diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c new file mode 100644 index 0000000..d225a60 --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c @@ -0,0 +1,67 @@ +/* + * Amlogic Meson DWMAC glue layer + * + * Copyright (C) 2014 Beniamino Galvani <b.galvani@xxxxxxxxx> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/device.h> +#include <linux/ethtool.h> +#include <linux/io.h> +#include <linux/ioport.h> +#include <linux/platform_device.h> +#include <linux/stmmac.h> + +#define ETHMAC_SPEED_100 BIT(1) + +struct meson_dwmac { + struct device *dev; + void __iomem *reg; +}; + +static void meson6_dwmac_fix_mac_speed(void *priv, unsigned int speed) +{ + struct meson_dwmac *dwmac = priv; + unsigned int val; + + val = readl(dwmac->reg); + + switch (speed) { + case SPEED_10: + val &= ~ETHMAC_SPEED_100; + break; + case SPEED_100: + val |= ETHMAC_SPEED_100; + break; + } + + writel(val, dwmac->reg); +} + +static void *meson6_dwmac_setup(struct platform_device *pdev) +{ + struct meson_dwmac *dwmac; + struct resource *res; + + dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL); + if (!dwmac) + return ERR_PTR(-ENOMEM); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + dwmac->reg = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(dwmac->reg)) + return dwmac->reg; + + return dwmac; +} + +const struct stmmac_of_data meson6_dwmac_data = { + .setup = meson6_dwmac_setup, + .fix_mac_speed = meson6_dwmac_fix_mac_speed, +}; diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h index 58097c0..4452889 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h @@ -137,6 +137,9 @@ void stmmac_disable_eee_mode(struct stmmac_priv *priv); bool stmmac_eee_init(struct stmmac_priv *priv); #ifdef CONFIG_STMMAC_PLATFORM +#ifdef CONFIG_DWMAC_MESON +extern const struct stmmac_of_data meson6_dwmac_data; +#endif #ifdef CONFIG_DWMAC_SUNXI extern const struct stmmac_of_data sun7i_gmac_data; #endif diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c index bb524a9..6521717 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c @@ -30,6 +30,9 @@ #include "stmmac.h" static const struct of_device_id stmmac_dt_ids[] = { +#ifdef CONFIG_DWMAC_MESON + { .compatible = "amlogic,meson6-dwmac", .data = &meson6_dwmac_data}, +#endif #ifdef CONFIG_DWMAC_SUNXI { .compatible = "allwinner,sun7i-a20-gmac", .data = &sun7i_gmac_data}, #endif -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
