diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/Makefile | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c | 130 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac.h | 3 | ||||
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 3 |
5 files changed, 147 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig index f2d7c702c77f..2d09c116cbc8 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_SOCFPGA + bool "SOCFPGA dwmac support" + depends on STMMAC_PLATFORM && MFD_SYSCON && (ARCH_SOCFPGA || COMPILE_TEST) + 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. + config DWMAC_SUNXI bool "Allwinner GMAC support" depends on STMMAC_PLATFORM && ARCH_SUNXI diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile index dcef28775dad..18695ebef7e4 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Makefile +++ b/drivers/net/ethernet/stmicro/stmmac/Makefile @@ -3,6 +3,7 @@ stmmac-$(CONFIG_STMMAC_PLATFORM) += stmmac_platform.o stmmac-$(CONFIG_STMMAC_PCI) += stmmac_pci.o stmmac-$(CONFIG_DWMAC_SUNXI) += dwmac-sunxi.o stmmac-$(CONFIG_DWMAC_STI) += dwmac-sti.o +stmmac-$(CONFIG_DWMAC_SOCFPGA) += dwmac-socfpga.o stmmac-objs:= stmmac_main.o stmmac_ethtool.o stmmac_mdio.o ring_mode.o \ chain_mode.o dwmac_lib.o dwmac1000_core.o dwmac1000_dma.o \ dwmac100_core.o dwmac100_dma.o enh_desc.o norm_desc.o \ diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c new file mode 100644 index 000000000000..fd8a217556a1 --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c @@ -0,0 +1,130 @@ +/* Copyright Altera Corporation (C) 2014. All rights reserved. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * Adopted from dwmac-sti.c + */ + +#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> + +#define SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII 0x0 +#define SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII 0x1 +#define SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RMII 0x2 +#define SYSMGR_EMACGRP_CTRL_PHYSEL_WIDTH 2 +#define SYSMGR_EMACGRP_CTRL_PHYSEL_MASK 0x00000003 + +struct socfpga_dwmac { + int interface; + u32 reg_offset; + u32 reg_shift; + struct device *dev; + struct regmap *sys_mgr_base_addr; +}; + +static int socfpga_dwmac_parse_data(struct socfpga_dwmac *dwmac, struct device *dev) +{ + struct device_node *np = dev->of_node; + struct regmap *sys_mgr_base_addr; + u32 reg_offset, reg_shift; + int ret; + + dwmac->interface = of_get_phy_mode(np); + + sys_mgr_base_addr = syscon_regmap_lookup_by_phandle(np, "altr,sysmgr-syscon"); + if (IS_ERR(sys_mgr_base_addr)) { + dev_info(dev, "No sysmgr-syscon node found\n"); + return PTR_ERR(sys_mgr_base_addr); + } + + ret = of_property_read_u32_index(np, "altr,sysmgr-syscon", 1, ®_offset); + if (ret) { + dev_info(dev, "Could not read reg_offset from sysmgr-syscon!\n"); + return -EINVAL; + } + + ret = of_property_read_u32_index(np, "altr,sysmgr-syscon", 2, ®_shift); + if (ret) { + dev_info(dev, "Could not read reg_shift from sysmgr-syscon!\n"); + return -EINVAL; + } + + dwmac->reg_offset = reg_offset; + dwmac->reg_shift = reg_shift; + dwmac->sys_mgr_base_addr = sys_mgr_base_addr; + dwmac->dev = dev; + + return 0; +} + +static int socfpga_dwmac_setup(struct socfpga_dwmac *dwmac) +{ + struct regmap *sys_mgr_base_addr = dwmac->sys_mgr_base_addr; + int phymode = dwmac->interface; + u32 reg_offset = dwmac->reg_offset; + u32 reg_shift = dwmac->reg_shift; + u32 ctrl, val; + + switch (phymode) { + case PHY_INTERFACE_MODE_RGMII: + val = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RGMII; + break; + case PHY_INTERFACE_MODE_MII: + case PHY_INTERFACE_MODE_GMII: + val = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII; + break; + default: + dev_err(dwmac->dev, "bad phy mode %d\n", phymode); + return -EINVAL; + } + + regmap_read(sys_mgr_base_addr, reg_offset, &ctrl); + ctrl &= ~(SYSMGR_EMACGRP_CTRL_PHYSEL_MASK << reg_shift); + ctrl |= val << reg_shift; + + regmap_write(sys_mgr_base_addr, reg_offset, ctrl); + return 0; +} + +static void *socfpga_dwmac_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + int ret; + struct socfpga_dwmac *dwmac; + + dwmac = devm_kzalloc(dev, sizeof(*dwmac), GFP_KERNEL); + if (!dwmac) + return ERR_PTR(-ENOMEM); + + ret = socfpga_dwmac_parse_data(dwmac, dev); + if (ret) { + dev_err(dev, "Unable to parse OF data\n"); + return ERR_PTR(ret); + } + + ret = socfpga_dwmac_setup(dwmac); + if (ret) { + dev_err(dev, "couldn't setup SoC glue (%d)\n", ret); + return ERR_PTR(ret); + } + + return dwmac; +} + +const struct stmmac_of_data socfpga_gmac_data = { + .setup = socfpga_dwmac_probe, +}; diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h index f9e60d7918c4..ca01035634a7 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h @@ -136,6 +136,9 @@ extern const struct stmmac_of_data sun7i_gmac_data; #ifdef CONFIG_DWMAC_STI extern const struct stmmac_of_data sti_gmac_data; #endif +#ifdef CONFIG_DWMAC_SOCFPGA +extern const struct stmmac_of_data socfpga_gmac_data; +#endif extern struct platform_driver stmmac_pltfr_driver; static inline int stmmac_register_platform(void) { diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c index 8fb32a80f1c1..46aef5108bea 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c @@ -38,6 +38,9 @@ static const struct of_device_id stmmac_dt_ids[] = { { .compatible = "st,stih416-dwmac", .data = &sti_gmac_data}, { .compatible = "st,stid127-dwmac", .data = &sti_gmac_data}, #endif +#ifdef CONFIG_DWMAC_SOCFPGA + { .compatible = "altr,socfpga-stmmac", .data = &socfpga_gmac_data }, +#endif /* SoC specific glue layers should come before generic bindings */ { .compatible = "st,spear600-gmac"}, { .compatible = "snps,dwmac-3.610"}, |
