mirror of
https://github.com/archlinuxarm/PKGBUILDs.git
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223 lines
6.4 KiB
Diff
223 lines
6.4 KiB
Diff
From 337a000bdf03d6c9bc093ca29c47c86777367b03 Mon Sep 17 00:00:00 2001
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From: Ashokkumar G <0xfee1dead.sa@gmail.com>
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Date: Mon, 26 Jan 2015 11:28:52 -0700
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Subject: [PATCH 5/8] mmp:ethernet: Adding ethernet MAC address reading for
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gplugd
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Currently Marvell's pxa168 ethernet driver uses random MAC address
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by default instead of reading MAC address from OTP SPI flash.
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Adding support to uses MAC address provided instead of random MAC
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address by default
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Signed-off-by: Ashokkumar G <0xfee1dead.sa@gmail.com>
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---
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arch/arm/mach-mmp/gplugd.c | 132 ++++++++++++++++++++++++------
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drivers/net/ethernet/marvell/pxa168_eth.c | 5 ++
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include/linux/pxa168_eth.h | 3 +
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3 files changed, 116 insertions(+), 24 deletions(-)
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diff --git a/arch/arm/mach-mmp/gplugd.c b/arch/arm/mach-mmp/gplugd.c
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index 9c441e1b3159..2981c8878ee7 100644
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--- a/arch/arm/mach-mmp/gplugd.c
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+++ b/arch/arm/mach-mmp/gplugd.c
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@@ -22,6 +22,8 @@
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#include <mach/pxa168.h>
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#include <mach/mfp-pxa168.h>
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+#include <uapi/linux/ethtool.h>
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+#include <linux/etherdevice.h>
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#include "common.h"
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static unsigned long gplugd_pin_config[] __initdata = {
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@@ -146,27 +148,6 @@ static struct i2c_board_info gplugd_i2c_board_info[] = {
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}
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};
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-/* Bring PHY out of reset by setting GPIO 104 */
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-static int gplugd_eth_init(void)
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-{
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- if (unlikely(gpio_request(104, "ETH_RESET_N"))) {
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- printk(KERN_ERR "Can't get hold of GPIO 104 to bring Ethernet "
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- "PHY out of reset\n");
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- return -EIO;
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- }
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-
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- gpio_direction_output(104, 1);
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- gpio_free(104);
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- return 0;
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-}
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-
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-struct pxa168_eth_platform_data gplugd_eth_platform_data = {
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- .port_number = 0,
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- .phy_addr = 0,
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- .speed = 0, /* Autonagotiation */
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- .init = gplugd_eth_init,
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-};
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-
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static void __init select_disp_freq(void)
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{
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/* set GPIO 35 & clear GPIO 85 to set LCD External Clock to 74.25 MHz */
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@@ -227,6 +208,108 @@ static inline int pxa168_add_spi(int id, struct pxa2xx_spi_master *pdata)
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return platform_device_add(pd);
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}
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+#ifdef CONFIG_MTD
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+static void gplugd_parse_enetaddr(const u8 *addr, u8 *enetaddr)
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+{
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+ char *end;
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+ int i;
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+
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+ for (i = 0; i < 6; ++i) {
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+ enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
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+ if (addr)
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+ addr = (*end) ? end + 1 : end;
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+ }
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+}
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+
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+static struct pxa168_eth_platform_data gplugd_eth_platform_data;
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+
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+static void __init read_device_serial_mac(void)
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+{
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+#define GPLUGD_SERIAL_NUM_LENGTH 14
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+#define GPLUGD_MAC_ADDR_LENGTH 18
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+ char otp_serial_num[GPLUGD_SERIAL_NUM_LENGTH];
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+ char otp_mac_addr[GPLUGD_MAC_ADDR_LENGTH];
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+ u8 *mac_addr = gplugd_eth_platform_data.mac_addr;
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+ size_t retlen;
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+ struct mtd_info *mtd = NULL;
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+
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+ mtd = get_mtd_device(NULL, 0x00);
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+
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+ if (!mtd) {
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+ pr_err("%s %d: No MTD devices found", __func__, __LINE__);
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+ return;
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+ }
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+
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+ if (mtd->_read_user_prot_reg) {
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+ if (!mtd->_read_user_prot_reg(mtd, 0, GPLUGD_SERIAL_NUM_LENGTH,
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+ &retlen, otp_serial_num)) {
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+ if (!mtd->_read_user_prot_reg(mtd,
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+ GPLUGD_SERIAL_NUM_LENGTH,
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+ GPLUGD_MAC_ADDR_LENGTH,
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+ &retlen, otp_mac_addr)) {
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+
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+ gplugd_parse_enetaddr(otp_mac_addr, mac_addr);
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+ } else {
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+ pr_err("%s %d: OTP MAC Address read failed\n",
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+ __func__, __LINE__);
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+ }
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+ } else {
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+ pr_err("%s %d: OTP Serial Number read failed\n",
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+ __func__, __LINE__);
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+ }
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+ }
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+
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+ put_mtd_device(mtd);
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+}
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+#else
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+static void __init read_device_serial_mac(void) {}
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+#endif
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+
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+static int device_mac_address(u8 *mac_addr)
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+{
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+ pr_warn("%s %d: Entry\n", __func__, __LINE__);
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+ read_device_serial_mac();
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+ if (!is_valid_ether_addr(gplugd_eth_platform_data.mac_addr))
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+ return -EINVAL;
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+ memcpy(mac_addr, gplugd_eth_platform_data.mac_addr, 6);
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+ return 0;
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+}
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+
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+/* Bring PHY out of reset by setting GPIO 104 */
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+static int gplugd_eth_init(void)
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+{
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+ int gpio_enet_reset = 104;
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+ int gpio_enet_coma = 102;
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+
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+ if (unlikely(gpio_request(gpio_enet_reset, "ETH_RESET_N"))) {
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+ printk(KERN_ERR "Can't get hold of GPIO %d to bring Ethernet "
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+ "PHY out of reset\n", gpio_enet_reset);
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+ return -EIO;
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+ }
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+ if (unlikely(gpio_request(gpio_enet_coma, "ETH_COMA_N"))) {
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+ printk(KERN_ERR "Can't get hold of GPIO %d to bring Ethernet "
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+ "PHY out of coma\n", gpio_enet_coma);
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+ return -EIO;
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+ }
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+
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+
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+ gpio_direction_output(gpio_enet_reset, 1);
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+ gpio_direction_output(gpio_enet_coma, 1);
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+
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+ gpio_free(gpio_enet_reset);
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+ gpio_free(gpio_enet_coma);
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+ return 0;
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+}
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+
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+static struct pxa168_eth_platform_data gplugd_eth_platform_data = {
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+ .port_number = 0,
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+ .phy_addr = 0,
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+ .speed = 0, /* Autonagotiation */
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+ .mac_addr = {0x00},
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+ .init = gplugd_eth_init,
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+ .device_mac = device_mac_address,
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+};
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+
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static void __init gplugd_init(void)
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{
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mfp_config(ARRAY_AND_SIZE(gplugd_pin_config));
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@@ -243,12 +326,13 @@ static void __init gplugd_init(void)
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pxa168_add_twsi(0, &i2c_info, ARRAY_AND_SIZE(gplugd_i2c_board_info));
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- pxa168_add_eth(&gplugd_eth_platform_data);
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+ pxa168_add_spi(2, &pxa_ssp_master_info);
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+ spi_register_board_info(gplugD_spi_board_info,
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+ ARRAY_SIZE(gplugD_spi_board_info));
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pxa168_add_ssp(2);
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- pxa168_add_spi(2, &pxa_ssp_master_info);
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- spi_register_board_info(gplugD_spi_board_info, ARRAY_SIZE(gplugD_spi_board_info));
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+ pxa168_add_eth(&gplugd_eth_platform_data);
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}
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MACHINE_START(GPLUGD, "PXA168-based GuruPlug Display (gplugD) Platform")
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diff --git a/drivers/net/ethernet/marvell/pxa168_eth.c b/drivers/net/ethernet/marvell/pxa168_eth.c
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index c3b209cd0660..9cb99ab9fa47 100644
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--- a/drivers/net/ethernet/marvell/pxa168_eth.c
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+++ b/drivers/net/ethernet/marvell/pxa168_eth.c
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@@ -1552,6 +1552,11 @@ static int pxa168_eth_probe(struct platform_device *pdev)
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pep->port_num = pep->pd->port_number;
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pep->phy_addr = pep->pd->phy_addr;
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+
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+ if (pep->pd->device_mac)
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+ pep->pd->device_mac(pep->pd->mac_addr);
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+ if (is_valid_ether_addr(pep->pd->mac_addr))
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+ memcpy(dev->dev_addr, pep->pd->mac_addr, 6);
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} else if (pdev->dev.of_node) {
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of_property_read_u32(pdev->dev.of_node, "port-id",
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&pep->port_num);
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diff --git a/include/linux/pxa168_eth.h b/include/linux/pxa168_eth.h
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index 18d75e795606..ca941555d9b8 100644
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--- a/include/linux/pxa168_eth.h
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+++ b/include/linux/pxa168_eth.h
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@@ -20,11 +20,14 @@ struct pxa168_eth_platform_data {
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int rx_queue_size;
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int tx_queue_size;
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+ u8 mac_addr[6]; /* mac address if non-zero*/
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+
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/*
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* init callback is used for board specific initialization
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* e.g on Aspenite its used to initialize the PHY transceiver.
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*/
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int (*init)(void);
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+ int (*device_mac)(u8 *mac_addr);
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};
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#endif /* __LINUX_PXA168_ETH_H */
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--
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2.11.1
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