From cec5fe390477249493f7b2522458646471cbdaa3 Mon Sep 17 00:00:00 2001
From: Alex Gonzalez <alex.gonzalez@digi.com>
Date: Wed, 9 Jan 2013 17:30:17 +0100
Subject: [PATCH] meta-digi-arm: Add atheros wireless module.

Signed-off-by: Alex Gonzalez <alex.gonzalez@digi.com>
---
 meta-digi-arm/conf/machine/ccardxmx28js.conf  |  2 +
 .../kernel-module-atheros/files/atheros       | 86 +++++++++++++++++++
 .../kernel-module-atheros_git.bb              | 61 +++++++++++++
 3 files changed, 149 insertions(+)
 create mode 100644 meta-digi-arm/recipes-kernel/kernel-module-atheros/files/atheros
 create mode 100644 meta-digi-arm/recipes-kernel/kernel-module-atheros/kernel-module-atheros_git.bb

diff --git a/meta-digi-arm/conf/machine/ccardxmx28js.conf b/meta-digi-arm/conf/machine/ccardxmx28js.conf
index 5647175d2..c081f4306 100644
--- a/meta-digi-arm/conf/machine/ccardxmx28js.conf
+++ b/meta-digi-arm/conf/machine/ccardxmx28js.conf
@@ -17,6 +17,8 @@ KERNEL_IMAGETYPE = "uImage"
 # Digi's kernel does not use device tree.
 # KERNEL_DEVICETREE = "${S}/arch/arm/boot/dts/ccardxmx28js.dts"
 
+MACHINE_ESSENTIAL_EXTRA_RDEPENDS += "kernel-module-atheros"
+
 SERIAL_CONSOLE = "115200 ttyAM0"
 
 KERNEL_IMAGETYPE = "uImage"
diff --git a/meta-digi-arm/recipes-kernel/kernel-module-atheros/files/atheros b/meta-digi-arm/recipes-kernel/kernel-module-atheros/files/atheros
new file mode 100644
index 000000000..dfcb1abfa
--- /dev/null
+++ b/meta-digi-arm/recipes-kernel/kernel-module-atheros/files/atheros
@@ -0,0 +1,86 @@
+#!/bin/sh -l
+#===============================================================================
+#
+#  10-atheros_pre-up
+#
+#  Copyright (C) 2012 by Digi International Inc.
+#  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.
+#
+#
+#  !Description: Load Atheros' wireless driver
+#
+#===============================================================================
+
+set -e
+
+[ "${IFACE}" != "wlan0" ] && exit 0
+
+FIRMWARE_DIR="/lib/firmware/ath6k/AR6003/hw2.1.1"
+RAM_DRIVE="/var/run"
+MAC_FILENAME="softmac"
+
+#
+# Get the wlan MAC address from NVRAM.  Use a default
+# value if the address has not been set.
+#
+
+# TODO: Hardcoded until passed to kernel command line from U-Boot.
+#MAC_ADDR="$(nvram print module ethaddr2 | sed 's,ethaddr2=,,g')"
+#if [ -z "${MAC_ADDR}" -o "${MAC_ADDR}" = "00:00:00:00:00:00" ]; then
+	MAC_ADDR="00:04:F3:4C:B1:D3"
+#fi
+
+mac1="$(echo ${MAC_ADDR} | cut -d':' -f1)"
+mac2="$(echo ${MAC_ADDR} | cut -d':' -f2)"
+mac3="$(echo ${MAC_ADDR} | cut -d':' -f3)"
+mac4="$(echo ${MAC_ADDR} | cut -d':' -f4)"
+mac5="$(echo ${MAC_ADDR} | cut -d':' -f5)"
+mac6="$(echo ${MAC_ADDR} | cut -d':' -f6)"
+
+printf "\x${mac1}\x${mac2}\x${mac3}\x${mac4}\x${mac5}\x${mac6}" > ${RAM_DRIVE}/${MAC_FILENAME}
+
+# We need to write the WLAN MAC address to softmac in the ath6k firmware
+# directory.  However, we don't want to rewrite the file if it already exists
+# and the address is the same because we don't want to wear out NAND flash.
+#
+# So create the file on the RAM DRIVE first and compare the two.  Only update
+# the copy on NAND if the address has changed.
+#
+if ! cmp -s ${RAM_DRIVE}/${MAC_FILENAME} ${FIRMWARE_DIR}/${MAC_FILENAME}; then
+	cp ${RAM_DRIVE}/${MAC_FILENAME} ${FIRMWARE_DIR}/${MAC_FILENAME}
+fi
+rm -f ${RAM_DRIVE}/${MAC_FILENAME}
+
+# Figure out which wireless region we are in.  The US has rules for
+# what channels can be used and at what power level.  We use a different set of
+# rules for the other regions in the world that we sell into.  The mod_cert field
+# in OTP will be set to 0x0 for the US.  Once we know the region, make sure the
+# appropriate calibration file is loaded.
+#
+US_CODE="0x0"
+REGION_CODE="$(cat /sys/kernel/ccardxmx28/mod_cert)"
+if [ -z "${REGION_CODE}" -o "${US_CODE}" = "${REGION_CODE}" ]; then
+	BDATA_SOURCE=Digi_6203-6233-US.bin
+else
+	BDATA_SOURCE=Digi_6203-6233-World.bin
+fi
+
+# We don't want to rewrite NAND every time we boot so only
+# change the link if it is wrong.
+BDATA_LINK="${FIRMWARE_DIR}/bdata.bin"
+if [ ! -e "${BDATA_LINK}" ] || ! cmp -s "${BDATA_LINK}" "${FIRMWARE_DIR}/${BDATA_SOURCE}"; then
+	ln -sf "${BDATA_SOURCE}" "${BDATA_LINK}"
+fi
+
+# ath6kl_sdio.ko
+ATH6KL_PARAMS=""
+[ -f "/root/wifi_test_mode" ] && { ATH6KL_PARAMS="${ATH6KL_PARAMS} testmode=1"; test_mode_str=" in test mode"; }
+grep -qs ath6kl_sdio /proc/modules || \
+	/sbin/modprobe -q ath6kl_sdio ${ATH6KL_PARAMS} || echo "Loading ath6kl_sdio module${test_mode_str}: [FAILED]"
+
+# Delay required for the interface 'wlan0' to settle down before trying to configure it.
+sleep 0.5
diff --git a/meta-digi-arm/recipes-kernel/kernel-module-atheros/kernel-module-atheros_git.bb b/meta-digi-arm/recipes-kernel/kernel-module-atheros/kernel-module-atheros_git.bb
new file mode 100644
index 000000000..25c24a747
--- /dev/null
+++ b/meta-digi-arm/recipes-kernel/kernel-module-atheros/kernel-module-atheros_git.bb
@@ -0,0 +1,61 @@
+DESCRIPTION = "Atheros's wireless driver"
+LICENSE = "GPLv2"
+LIC_FILES_CHKSUM = "file://Ath6kl_LinuxRelease/Generic_Packages/compat-wireless/COPYRIGHT;md5=d7810fab7487fb0aad327b76f1be7cd7"
+
+inherit module
+
+PR = "r0"
+
+FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
+SRCREV = "del-5.9.3.1"
+SRC_URI = "${DIGI_LOG_GIT}linux-modules/atheros.git;protocol=git \
+	   file://atheros \
+	  "
+
+S = "${WORKDIR}/git"
+FIRMWARE_S = "${S}/Ath6kl_LinuxRelease/Firmware_Package/target/AR6003/hw2.1.1"
+
+EXTRA_OEMAKE = "-C ${STAGING_KERNEL_DIR}"
+EXTRAMAKEFLAGS = "M=${S} CONFIG_DEL_KMOD_ATHEROS=y KLIB_BUILD=${STAGING_KERNEL_DIR}"
+
+module_do_compile() {
+        unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS
+        oe_runmake KERNEL_PATH=${STAGING_KERNEL_DIR}   \
+                   KERNEL_SRC=${STAGING_KERNEL_DIR}    \
+                   CC="${KERNEL_CC}" LD="${KERNEL_LD}" \
+                   AR="${KERNEL_AR}" \
+		   ${EXTRAMAKEFLAGS} \
+                   ${MAKE_TARGETS}
+}
+
+module_do_install() {
+        unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS
+        oe_runmake DEPMOD=echo INSTALL_MOD_PATH="${D}" \
+                   KERNEL_SRC=${STAGING_KERNEL_DIR} \
+                   CC="${KERNEL_CC}" LD="${KERNEL_LD}" \
+		   ${EXTRAMAKEFLAGS} \
+                   modules_install
+}
+
+do_install_append() {
+        install -d ${D}${sysconfdir}/network/if-pre-up.d
+	install -m 0755 ${WORKDIR}/atheros  ${D}${sysconfdir}/network/if-pre-up.d/
+	install -d ${D}/lib/firmware/ath6k/AR6003/hw2.1.1
+	install -m 0755 ${FIRMWARE_S}/athtcmd_ram.bin ${D}/lib/firmware/ath6k/AR6003/hw2.1.1/
+	install -m 0755 ${FIRMWARE_S}/athwlan.bin ${D}/lib/firmware/ath6k/AR6003/hw2.1.1/
+	install -m 0755 ${FIRMWARE_S}/fw-3.bin ${D}/lib/firmware/ath6k/AR6003/hw2.1.1/
+	install -m 0755 ${FIRMWARE_S}/nullTestFlow.bin ${D}/lib/firmware/ath6k/AR6003/hw2.1.1/
+	install -m 0755 ${FIRMWARE_S}/utf.bin ${D}/lib/firmware/ath6k/AR6003/hw2.1.1/
+	install -m 0755 ${FIRMWARE_S}/Digi_6203-6233-US.bin ${D}/lib/firmware/ath6k/AR6003/hw2.1.1/
+	install -m 0755 ${FIRMWARE_S}/Digi_6203-6233-World.bin ${D}/lib/firmware/ath6k/AR6003/hw2.1.1/
+}
+
+FILES_${PN} += " /lib/firmware/ath6k/AR6003/hw2.1.1/athtcmd_ram.bin \
+		/lib/firmware/ath6k/AR6003/hw2.1.1/athwlan.bin \
+		/lib/firmware/ath6k/AR6003/hw2.1.1/fw-3.bin \
+		/lib/firmware/ath6k/AR6003/hw2.1.1/nullTestFlow.bin \
+		/lib/firmware/ath6k/AR6003/hw2.1.1/utf.bin \
+		/lib/firmware/ath6k/AR6003/hw2.1.1/Digi_6203-6233-US.bin \
+		/lib/firmware/ath6k/AR6003/hw2.1.1/Digi_6203-6233-World.bin "
+
+COMPATIBLE_MACHINE = "(ccardxmx28js)"