openwrt/target/linux/lantiq/patches-4.4/0035-owrt-lantiq-wifi-and-ethernet-eeprom-handling.patch
Mathias Kresin 62a347b1d9 lantiq: drop ath9k device tree binding & ath9k pci fixup
Due to the addition of the bindings to the ath9k driver, this code
isn't used any longer. The fixup is now done by the owloader.

Rename the ath_eep.c file to ath5k_eep.c to indicate that this files
includes ath5k related code only.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2016-11-29 21:40:16 +01:00

220 lines
6.4 KiB
Diff

From f8c5db89e793a4bc6c1e87bd7b3a5cec16b75bc3 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Wed, 10 Sep 2014 22:42:14 +0200
Subject: [PATCH 35/36] owrt: lantiq: wifi and ethernet eeprom handling
Signed-off-by: John Crispin <blogic@openwrt.org>
---
.../mips/include/asm/mach-lantiq/xway/lantiq_soc.h | 3 +
arch/mips/lantiq/xway/Makefile | 3 +
arch/mips/lantiq/xway/ath5k_eep.c | 136 +++++++++++++++++++++
arch/mips/lantiq/xway/eth_mac.c | 25 ++++
drivers/net/ethernet/lantiq_etop.c | 6 +-
5 files changed, 172 insertions(+), 1 deletion(-)
create mode 100644 arch/mips/lantiq/xway/ath5k_eep.c
create mode 100644 arch/mips/lantiq/xway/eth_mac.c
--- a/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
+++ b/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
@@ -104,5 +104,8 @@ int xrx200_gphy_boot(struct device *dev,
extern void ltq_pmu_enable(unsigned int module);
extern void ltq_pmu_disable(unsigned int module);
+/* allow the ethernet driver to load a flash mapped mac addr */
+const u8* ltq_get_eth_mac(void);
+
#endif /* CONFIG_SOC_TYPE_XWAY */
#endif /* _LTQ_XWAY_H__ */
--- a/arch/mips/lantiq/xway/Makefile
+++ b/arch/mips/lantiq/xway/Makefile
@@ -2,4 +2,7 @@ obj-y := prom.o sysctrl.o clk.o reset.o
obj-y += vmmc.o tffs.o
+obj-y += eth_mac.o
+obj-$(CONFIG_PCI) += ath5k_eep.o
+
obj-$(CONFIG_XRX200_PHY_FW) += xrx200_phy_fw.o
--- /dev/null
+++ b/arch/mips/lantiq/xway/ath5k_eep.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2011 Luca Olivetti <luca@ventoso.org>
+ * Copyright (C) 2011 John Crispin <blogic@openwrt.org>
+ * Copyright (C) 2011 Andrej Vlašić <andrej.vlasic0@gmail.com>
+ * Copyright (C) 2013 Álvaro Fernández Rojas <noltari@gmail.com>
+ * Copyright (C) 2013 Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
+ * Copyright (C) 2015 Vittorio Gambaletta <openwrt@vittgam.net>
+ *
+ * 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.
+ */
+
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/etherdevice.h>
+#include <linux/ath5k_platform.h>
+#include <linux/pci.h>
+#include <linux/err.h>
+#include <linux/mtd/mtd.h>
+#include <lantiq_soc.h>
+
+extern int (*ltq_pci_plat_dev_init)(struct pci_dev *dev);
+struct ath5k_platform_data ath5k_pdata;
+static u8 athxk_eeprom_mac[6];
+
+static int ath5k_pci_plat_dev_init(struct pci_dev *dev)
+{
+ dev->dev.platform_data = &ath5k_pdata;
+ return 0;
+}
+
+static int ath5k_eep_load;
+int __init of_ath5k_eeprom_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node, *mtd_np = NULL;
+ int mac_offset;
+ u32 mac_inc = 0;
+ int i;
+ struct mtd_info *the_mtd;
+ size_t flash_readlen;
+ const __be32 *list;
+ const char *part;
+ phandle phandle;
+
+ list = of_get_property(np, "ath,eep-flash", &i);
+ if (!list || (i != (2 * sizeof(*list))))
+ return -ENODEV;
+
+ phandle = be32_to_cpup(list++);
+ if (phandle)
+ mtd_np = of_find_node_by_phandle(phandle);
+
+ if (!mtd_np)
+ return -ENODEV;
+
+ part = of_get_property(mtd_np, "label", NULL);
+ if (!part)
+ part = mtd_np->name;
+
+ the_mtd = get_mtd_device_nm(part);
+ if (IS_ERR(the_mtd))
+ return -ENODEV;
+
+ ath5k_pdata.eeprom_data = kmalloc(ATH5K_PLAT_EEP_MAX_WORDS<<1, GFP_KERNEL);
+
+ i = mtd_read(the_mtd, be32_to_cpup(list), ATH5K_PLAT_EEP_MAX_WORDS << 1,
+ &flash_readlen, (void *) ath5k_pdata.eeprom_data);
+
+ if (!of_property_read_u32(np, "ath,mac-offset", &mac_offset)) {
+ size_t mac_readlen;
+ mtd_read(the_mtd, mac_offset, 6, &mac_readlen,
+ (void *) athxk_eeprom_mac);
+ }
+ put_mtd_device(the_mtd);
+
+ if (((ATH5K_PLAT_EEP_MAX_WORDS<<1) != flash_readlen) || i) {
+ dev_err(&pdev->dev, "failed to load eeprom from mtd\n");
+ return -ENODEV;
+ }
+
+ if (of_find_property(np, "ath,eep-swap", NULL))
+ for (i = 0; i < ATH5K_PLAT_EEP_MAX_WORDS; i++)
+ ath5k_pdata.eeprom_data[i] = swab16(ath5k_pdata.eeprom_data[i]);
+
+ if (!is_valid_ether_addr(athxk_eeprom_mac) && ltq_get_eth_mac())
+ ether_addr_copy(athxk_eeprom_mac, ltq_get_eth_mac());
+
+ if (!is_valid_ether_addr(athxk_eeprom_mac)) {
+ dev_warn(&pdev->dev, "using random mac\n");
+ random_ether_addr(athxk_eeprom_mac);
+ }
+
+ if (!of_property_read_u32(np, "ath,mac-increment", &mac_inc))
+ athxk_eeprom_mac[5] += mac_inc;
+
+ ath5k_pdata.macaddr = athxk_eeprom_mac;
+ ltq_pci_plat_dev_init = ath5k_pci_plat_dev_init;
+
+ dev_info(&pdev->dev, "loaded ath5k eeprom\n");
+
+ return 0;
+}
+
+static struct of_device_id ath5k_eeprom_ids[] = {
+ { .compatible = "ath5k,eeprom" },
+ { }
+};
+
+static struct platform_driver ath5k_eeprom_driver = {
+ .driver = {
+ .name = "ath5k,eeprom",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(ath5k_eeprom_ids),
+ },
+};
+
+static int __init of_ath5k_eeprom_init(void)
+{
+ int ret = platform_driver_probe(&ath5k_eeprom_driver, of_ath5k_eeprom_probe);
+
+ if (ret)
+ ath5k_eep_load = 1;
+
+ return ret;
+}
+
+static int __init of_ath5k_eeprom_init_late(void)
+{
+ if (!ath5k_eep_load)
+ return 0;
+
+ return platform_driver_probe(&ath5k_eeprom_driver, of_ath5k_eeprom_probe);
+}
+late_initcall(of_ath5k_eeprom_init_late);
+subsys_initcall(of_ath5k_eeprom_init);
--- /dev/null
+++ b/arch/mips/lantiq/xway/eth_mac.c
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2012 John Crispin <blogic@openwrt.org>
+ *
+ * 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.
+ */
+
+#include <linux/init.h>
+#include <linux/if_ether.h>
+
+static u8 eth_mac[6];
+static int eth_mac_set;
+
+const u8* ltq_get_eth_mac(void)
+{
+ return eth_mac;
+}
+
+static int __init setup_ethaddr(char *str)
+{
+ eth_mac_set = mac_pton(str, eth_mac);
+ return !eth_mac_set;
+}
+early_param("ethaddr", setup_ethaddr);
--- a/drivers/net/ethernet/lantiq_etop.c
+++ b/drivers/net/ethernet/lantiq_etop.c
@@ -840,7 +840,11 @@ ltq_etop_init(struct net_device *dev)
if (err)
goto err_hw;
- memcpy(&mac, &priv->pldata->mac, sizeof(struct sockaddr));
+ memcpy(&mac.sa_data, ltq_get_eth_mac(), ETH_ALEN);
+
+ if (priv->mac && !is_valid_ether_addr(mac.sa_data))
+ memcpy(&mac.sa_data, priv->mac, ETH_ALEN);
+
if (!is_valid_ether_addr(mac.sa_data)) {
pr_warn("etop: invalid MAC, using random\n");
eth_random_addr(mac.sa_data);