[PATCH 2 3/4] OMAP4 PANDA register ethernet and wlan for automatic mac allocation

[Andy Green]

From: Andy Green <andy at warmcat.com>

This provides the board-specific device paths needed to get
the panda boardfile working with the mac-la-ap api.

On Pandaboard / ES, neither the onboard Ethernet or onboard WLAN
module have onboard arrangements for MAC storage, without this
series yielding randomized MAC per-boot and consequent DHCP problems,
or in the case of wlan0 a MAC set by a firmware file in the rootfs
which unless customized yields a MAC of 00:00:00:00:00:00.  No
official MAC is reserved for either network device even if you do
take the approach to customize the firmware file.

This gets sane, consistent MAC addresses on both devices which
should stand a good probability of differing between PandaBoards.

Signed-off-by: Andy Green <andy.green at linaro.org>
---
 arch/arm/mach-omap2/Kconfig            |    1 +
 arch/arm/mach-omap2/board-omap4panda.c |   30 ++++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 5e95aa6..d968e7f 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -348,6 +348,7 @@ config MACH_OMAP4_PANDA
 	select OMAP_PACKAGE_CBL
 	select OMAP_PACKAGE_CBS
 	select REGULATOR_FIXED_VOLTAGE if REGULATOR
+	select MAC_LA_AP
 
 config MACH_PCM049
 	bool "OMAP4 based phyCORE OMAP4"
diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c
index 982fb26..8f4984b 100644
--- a/arch/arm/mach-omap2/board-omap4panda.c
+++ b/arch/arm/mach-omap2/board-omap4panda.c
@@ -32,7 +32,10 @@
 #include <linux/wl12xx.h>
 #include <linux/platform_data/omap-abe-twl6040.h>
 
+#include <net/mac-la-ap.h>
+
 #include <mach/hardware.h>
+#include <mach/id.h>
 #include <asm/hardware/gic.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -486,16 +489,43 @@ static void omap4_panda_init_rev(void)
 	}
 }
 
+/*
+ * These device paths represent onboard network devices which have
+ * no MAC address set at boot, and need synthetic ones assigning
+ */
+static __initdata struct mac_la_ap panda_mac_la_ap[] = {
+
+	{ /* smsc USB <-> Ethernet bridge */
+		.device_path = "usb1/1-1/1-1.1/1-1.1:1.0",
+	},
+	{ /* wlan0 module */
+		.device_path = "wl12xx",
+	},
+	{ /* terminator */
+	}
+};
+
 static void __init omap4_panda_init(void)
 {
 	int package = OMAP_PACKAGE_CBS;
 	int ret;
+	int n;
 
 	if (omap_rev() == OMAP4430_REV_ES1_0)
 		package = OMAP_PACKAGE_CBL;
 	omap4_mux_init(board_mux, NULL, package);
 
 	omap_panda_wlan_data.irq = gpio_to_irq(GPIO_WIFI_IRQ);
+
+	/*
+	 * provide MAC addresses computed from device ID for network
+	 * devices that have no MAC address otherwise on Panda
+	 */
+	for (n = 0; n < ARRAY_SIZE(panda_mac_la_ap) - 1; n++)
+		omap2_die_id_to_ethernet_mac(panda_mac_la_ap[n].mac, n);
+	if (mac_la_ap_register_device_macs(panda_mac_la_ap))
+		pr_err("Unable to register mac_la_ap devices\n");
+
 	ret = wl12xx_set_platform_data(&omap_panda_wlan_data);
 	if (ret)
 		pr_err("error setting wl12xx data: %d\n", ret);