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219 lines
6.3 KiB
219 lines
6.3 KiB
From f8c5db89e793a4bc6c1e87bd7b3a5cec16b75bc3 Mon Sep 17 00:00:00 2001
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From: John Crispin <blogic@openwrt.org>
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Date: Wed, 10 Sep 2014 22:42:14 +0200
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Subject: [PATCH 35/36] owrt: lantiq: wifi and ethernet eeprom handling
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Signed-off-by: John Crispin <blogic@openwrt.org>
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---
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.../mips/include/asm/mach-lantiq/xway/lantiq_soc.h | 3 +
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arch/mips/lantiq/xway/Makefile | 3 +
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arch/mips/lantiq/xway/ath5k_eep.c | 136 +++++++++++++++++++++
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arch/mips/lantiq/xway/eth_mac.c | 25 ++++
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drivers/net/ethernet/lantiq_etop.c | 6 +-
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5 files changed, 172 insertions(+), 1 deletion(-)
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create mode 100644 arch/mips/lantiq/xway/ath5k_eep.c
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create mode 100644 arch/mips/lantiq/xway/eth_mac.c
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--- a/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
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+++ b/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
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@@ -104,5 +104,8 @@ int xrx200_gphy_boot(struct device *dev,
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extern void ltq_pmu_enable(unsigned int module);
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extern void ltq_pmu_disable(unsigned int module);
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+/* allow the ethernet driver to load a flash mapped mac addr */
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+const u8* ltq_get_eth_mac(void);
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+
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#endif /* CONFIG_SOC_TYPE_XWAY */
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#endif /* _LTQ_XWAY_H__ */
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--- a/arch/mips/lantiq/xway/Makefile
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+++ b/arch/mips/lantiq/xway/Makefile
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@@ -8,4 +8,7 @@ endif
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obj-y += vmmc.o
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+obj-y += eth_mac.o
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+obj-$(CONFIG_PCI) += ath5k_eep.o
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+
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obj-$(CONFIG_XRX200_PHY_FW) += xrx200_phy_fw.o
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--- /dev/null
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+++ b/arch/mips/lantiq/xway/ath5k_eep.c
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@@ -0,0 +1,136 @@
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+/*
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+ * Copyright (C) 2011 Luca Olivetti <luca@ventoso.org>
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+ * Copyright (C) 2011 John Crispin <blogic@openwrt.org>
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+ * Copyright (C) 2011 Andrej Vlašić <andrej.vlasic0@gmail.com>
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+ * Copyright (C) 2013 Álvaro Fernández Rojas <noltari@gmail.com>
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+ * Copyright (C) 2013 Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
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+ * Copyright (C) 2015 Vittorio Gambaletta <openwrt@vittgam.net>
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+ *
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License version 2 as published
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+ * by the Free Software Foundation.
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+ */
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+
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+#include <linux/init.h>
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+#include <linux/platform_device.h>
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+#include <linux/etherdevice.h>
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+#include <linux/ath5k_platform.h>
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+#include <linux/pci.h>
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+#include <linux/err.h>
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+#include <linux/mtd/mtd.h>
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+#include <lantiq_soc.h>
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+
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+extern int (*ltq_pci_plat_dev_init)(struct pci_dev *dev);
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+struct ath5k_platform_data ath5k_pdata;
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+static u8 athxk_eeprom_mac[6];
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+
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+static int ath5k_pci_plat_dev_init(struct pci_dev *dev)
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+{
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+ dev->dev.platform_data = &ath5k_pdata;
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+ return 0;
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+}
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+
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+static int ath5k_eep_load;
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+int __init of_ath5k_eeprom_probe(struct platform_device *pdev)
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+{
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+ struct device_node *np = pdev->dev.of_node, *mtd_np = NULL;
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+ int mac_offset;
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+ u32 mac_inc = 0;
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+ int i;
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+ struct mtd_info *the_mtd;
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+ size_t flash_readlen;
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+ const __be32 *list;
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+ const char *part;
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+ phandle phandle;
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+
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+ list = of_get_property(np, "ath,eep-flash", &i);
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+ if (!list || (i != (2 * sizeof(*list))))
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+ return -ENODEV;
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+
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+ phandle = be32_to_cpup(list++);
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+ if (phandle)
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+ mtd_np = of_find_node_by_phandle(phandle);
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+
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+ if (!mtd_np)
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+ return -ENODEV;
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+
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+ part = of_get_property(mtd_np, "label", NULL);
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+ if (!part)
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+ part = mtd_np->name;
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+
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+ the_mtd = get_mtd_device_nm(part);
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+ if (IS_ERR(the_mtd))
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+ return -ENODEV;
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+
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+ ath5k_pdata.eeprom_data = kmalloc(ATH5K_PLAT_EEP_MAX_WORDS<<1, GFP_KERNEL);
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+
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+ i = mtd_read(the_mtd, be32_to_cpup(list), ATH5K_PLAT_EEP_MAX_WORDS << 1,
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+ &flash_readlen, (void *) ath5k_pdata.eeprom_data);
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+
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+ if (!of_property_read_u32(np, "ath,mac-offset", &mac_offset)) {
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+ size_t mac_readlen;
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+ mtd_read(the_mtd, mac_offset, 6, &mac_readlen,
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+ (void *) athxk_eeprom_mac);
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+ }
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+ put_mtd_device(the_mtd);
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+
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+ if (((ATH5K_PLAT_EEP_MAX_WORDS<<1) != flash_readlen) || i) {
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+ dev_err(&pdev->dev, "failed to load eeprom from mtd\n");
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+ return -ENODEV;
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+ }
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+
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+ if (of_find_property(np, "ath,eep-swap", NULL))
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+ for (i = 0; i < ATH5K_PLAT_EEP_MAX_WORDS; i++)
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+ ath5k_pdata.eeprom_data[i] = swab16(ath5k_pdata.eeprom_data[i]);
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+
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+ if (!is_valid_ether_addr(athxk_eeprom_mac) && ltq_get_eth_mac())
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+ ether_addr_copy(athxk_eeprom_mac, ltq_get_eth_mac());
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+
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+ if (!is_valid_ether_addr(athxk_eeprom_mac)) {
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+ dev_warn(&pdev->dev, "using random mac\n");
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+ random_ether_addr(athxk_eeprom_mac);
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+ }
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+
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+ if (!of_property_read_u32(np, "ath,mac-increment", &mac_inc))
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+ athxk_eeprom_mac[5] += mac_inc;
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+
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+ ath5k_pdata.macaddr = athxk_eeprom_mac;
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+ ltq_pci_plat_dev_init = ath5k_pci_plat_dev_init;
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+
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+ dev_info(&pdev->dev, "loaded ath5k eeprom\n");
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+
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+ return 0;
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+}
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+
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+static struct of_device_id ath5k_eeprom_ids[] = {
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+ { .compatible = "ath5k,eeprom" },
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+ { }
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+};
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+
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+static struct platform_driver ath5k_eeprom_driver = {
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+ .driver = {
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+ .name = "ath5k,eeprom",
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+ .owner = THIS_MODULE,
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+ .of_match_table = of_match_ptr(ath5k_eeprom_ids),
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+ },
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+};
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+
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+static int __init of_ath5k_eeprom_init(void)
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+{
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+ int ret = platform_driver_probe(&ath5k_eeprom_driver, of_ath5k_eeprom_probe);
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+
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+ if (ret)
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+ ath5k_eep_load = 1;
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+
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+ return ret;
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+}
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+
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+static int __init of_ath5k_eeprom_init_late(void)
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+{
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+ if (!ath5k_eep_load)
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+ return 0;
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+
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+ return platform_driver_probe(&ath5k_eeprom_driver, of_ath5k_eeprom_probe);
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+}
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+late_initcall(of_ath5k_eeprom_init_late);
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+subsys_initcall(of_ath5k_eeprom_init);
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--- /dev/null
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+++ b/arch/mips/lantiq/xway/eth_mac.c
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@@ -0,0 +1,25 @@
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+/*
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+ * Copyright (C) 2012 John Crispin <blogic@openwrt.org>
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+ *
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License version 2 as published
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+ * by the Free Software Foundation.
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+ */
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+
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+#include <linux/init.h>
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+#include <linux/if_ether.h>
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+
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+static u8 eth_mac[6];
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+static int eth_mac_set;
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+
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+const u8* ltq_get_eth_mac(void)
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+{
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+ return eth_mac;
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+}
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+
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+static int __init setup_ethaddr(char *str)
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+{
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+ eth_mac_set = mac_pton(str, eth_mac);
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+ return !eth_mac_set;
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+}
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+early_param("ethaddr", setup_ethaddr);
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--- a/drivers/net/ethernet/lantiq_etop.c
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+++ b/drivers/net/ethernet/lantiq_etop.c
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@@ -794,7 +794,11 @@ ltq_etop_init(struct net_device *dev)
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if (err)
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goto err_hw;
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- memcpy(&mac, &priv->pldata->mac, sizeof(struct sockaddr));
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+ memcpy(&mac.sa_data, ltq_get_eth_mac(), ETH_ALEN);
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+
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+ if (priv->mac && !is_valid_ether_addr(mac.sa_data))
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+ memcpy(&mac.sa_data, priv->mac, ETH_ALEN);
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+
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if (!is_valid_ether_addr(mac.sa_data)) {
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pr_warn("etop: invalid MAC, using random\n");
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eth_random_addr(mac.sa_data);
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