fix MOST driver dependency issues

This patch adds a new "most" receipe for building the MOST driver. The
receipe replaces the old ones, as it builds all modules at once. Hence,
the receipes aim*, hdm* and mostcore are removed. Additionally, the *.bb
file for the demo platform is modified to reflect these changes.

This patch is needed to avoid dependency issues among the modules of the
driver stack. Although, the problem has been reported with SPEC 438 and a
patch set to fix it has been introduced with Change #8447, it is still
present on RaspberryPi.

Change-Id: Id6104ee6d9bf1b7d9744761a6529461176fdd8b2
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>

3 files changed, 106 insertions, 0 deletions

diff --git a/recipes-kernel/most/files/0001-aim-network-3.10.31-ltsi-backport.patch b/recipes-kernel/most/files/0001-aim-network-3.10.31-ltsi-backport.patch
new file mode 100644
index 000000000..d0bbd72e8
--- /dev/null
+++ b/recipes-kernel/most/files/0001-aim-network-3.10.31-ltsi-backport.patch
@@ -0,0 +1,45 @@
+From 4c49b7ad9e3c1e64e4e6042e6fee357b5d9b3df2 Mon Sep 17 00:00:00 2001
+From: Christian Gromm <christian.gromm@microchip.com>
+Date: Mon, 23 Jan 2017 14:57:55 +0100
+Subject: [PATCH] aim-network: create backport patch for 3.10.31-ltsi
+
+Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
+---
+ aim-network/networking.c | 7 +++----
+ 1 file changed, 3 insertions(+), 4 deletions(-)
+
+diff --git a/aim-network/networking.c b/aim-network/networking.c
+index ce1764c..e04b523 100644
+--- a/aim-network/networking.c
++++ b/aim-network/networking.c
+@@ -362,8 +362,7 @@ static int aim_probe_channel(struct most_interface *iface, int channel_idx,
+ 
+ 	if (nd->tx.linked || nd->rx.linked) {
+ 		struct net_device *dev =
+-			alloc_netdev(0, "meth%d", NET_NAME_UNKNOWN,
+-				     most_nd_setup);
++			alloc_netdev(0, "meth%d", most_nd_setup);
+ 
+ 		if (!dev) {
+ 			pr_err("no memory for net_device\n");
+@@ -483,7 +482,7 @@ static int aim_rx_data(struct mbo *mbo)
+ 
+ 	if (nd->is_mamac) {
+ 		/* dest */
+-		ether_addr_copy(skb_put(skb, ETH_ALEN), dev->dev_addr);
++		memcpy(skb_put(skb, ETH_ALEN), dev->dev_addr, ETH_ALEN);
+ 
+ 		/* src */
+ 		memcpy(skb_put(skb, 4), &zero, 4);
+@@ -577,7 +576,7 @@ void most_deliver_netinfo(struct most_interface *iface,
+ 		if (!is_valid_ether_addr(dev->dev_addr)) {
+ 			netdev_info(dev, "set mac %02x-%02x-%02x-%02x-%02x-%02x\n",
+ 				    m[0], m[1], m[2], m[3], m[4], m[5]);
+-			ether_addr_copy(dev->dev_addr, m);
++			memcpy(dev->dev_addr, m, ETH_ALEN);
+ 			complete(&nd->mac_compl);
+ 		} else if (!ether_addr_equal(dev->dev_addr, m)) {
+ 			netdev_warn(dev, "reject mac %02x-%02x-%02x-%02x-%02x-%02x\n",
+-- 
+2.11.0
+
diff --git a/recipes-kernel/most/files/0001-aim-sound-3.10.31-ltsi-backport.patch b/recipes-kernel/most/files/0001-aim-sound-3.10.31-ltsi-backport.patch
new file mode 100644
index 000000000..31e9400df
--- /dev/null
+++ b/recipes-kernel/most/files/0001-aim-sound-3.10.31-ltsi-backport.patch
@@ -0,0 +1,29 @@
+From 686130266ff7968edc863d398fba82bd0f78bf29 Mon Sep 17 00:00:00 2001
+From: Christian Gromm <christian.gromm@microchip.com>
+Date: Wed, 28 Sep 2016 13:43:36 +0200
+Subject: [PATCH 1/4] backport module
+
+This patch replaces function snd_card_new() with snd_card_create() to match
+AGL/Renesas kernel API.
+
+Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
+---
+ aim-sound/sound.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/aim-sound/sound.c b/aim-sound/sound.c
+index 3dc625c..af0af2d 100644
+--- a/aim-sound/sound.c
++++ b/aim-sound/sound.c
+@@ -595,7 +595,7 @@ static int audio_probe_channel(struct most_interface *iface, int channel_id,
+ 		return ret;
+ 	}
+ 
+-	ret = snd_card_new(NULL, -1, card_name, THIS_MODULE,
++	ret = snd_card_create(-1, card_name, THIS_MODULE,
+ 			   sizeof(*channel), &card);
+ 	if (ret < 0)
+ 		return ret;
+-- 
+1.7.9.5
+
diff --git a/recipes-kernel/most/most.bb b/recipes-kernel/most/most.bb
new file mode 100644
index 000000000..512610af9
--- /dev/null
+++ b/recipes-kernel/most/most.bb
@@ -0,0 +1,32 @@
+DESCRIPTION = "Build MOST driver"
+LICENSE = "GPLv2"
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/GPL-2.0;md5=801f80980d171dd6425610833a22dbe6"
+
+inherit module
+
+PV = "0.1"
+
+SRC_URI = "git://gerrit.automotivelinux.org/gerrit/src/most;protocol=https"
+SRC_URI_append_porter = " file://0001-aim-network-3.10.31-ltsi-backport.patch \
+			   file://0001-aim-sound-3.10.31-ltsi-backport.patch \
+			 "
+S = "${WORKDIR}/git/driver"
+SRCREV = "${AUTOREV}"
+
+# The inherit of module.bbclass will automatically name module packages with
+# "kernel-module-" prefix as required by the oe-core build environment.
+
+do_install_append () {
+    # modprobe automatically at boot
+    if ${@bb.utils.contains('DISTRO_FEATURES','systemd','true','false',d)}; then
+        install -d ${D}${sysconfdir}/modules-load.d
+        echo "aim_cdev" > ${D}${sysconfdir}/modules-load.d/aim_cdev.conf
+        echo "aim_sound" > ${D}${sysconfdir}/modules-load.d/aim_sound.conf
+        echo "aim_network" > ${D}${sysconfdir}/modules-load.d/aim_network.conf
+        echo "aim_v4l2" > ${D}${sysconfdir}/modules-load.d/aim_v4l2.conf
+        echo "hdm_i2c" > ${D}${sysconfdir}/modules-load.d/hdm_i2c.conf
+        echo "hdm_dim2" > ${D}${sysconfdir}/modules-load.d/hdm_dim2.conf
+        echo "hdm_usb" > ${D}${sysconfdir}/modules-load.d/hdm_usb.conf
+        echo "mostcore" > ${D}${sysconfdir}/modules-load.d/mostcore.conf
+    fi
+}