This package allows easier configuration of USB gadgets via standard UCI interface. So far only CDC/ACM has been implemented and tested.
Signed-off-by: Petr Štetiar <[email protected]> --- package/utils/usbgadget/Makefile | 33 ++++++++++ package/utils/usbgadget/files/usbgadget.config | 21 ++++++ package/utils/usbgadget/files/usbgadget.init | 90 ++++++++++++++++++++++++++ 3 files changed, 144 insertions(+) create mode 100644 package/utils/usbgadget/Makefile create mode 100644 package/utils/usbgadget/files/usbgadget.config create mode 100644 package/utils/usbgadget/files/usbgadget.init diff --git a/package/utils/usbgadget/Makefile b/package/utils/usbgadget/Makefile new file mode 100644 index 0000000..e45bfe4 --- /dev/null +++ b/package/utils/usbgadget/Makefile @@ -0,0 +1,33 @@ +include $(TOPDIR)/rules.mk + +PKG_NAME:=usbgadget +PKG_RELEASE:=1 + +include $(INCLUDE_DIR)/package.mk + +define Package/usbgadget + SECTION:=utils + CATEGORY:=Utilities + TITLE:=Utility for USB gadgets configuration +endef + +define Package/usbgadget/conffiles +/etc/config/usbgadget +endef + +define Package/usbgadget/description + This package contains a small script which could be used for + configuration of USB gadgets over configfs kernel interface. +endef + +define Build/Compile +endef + +define Package/usbgadget/install + $(INSTALL_DIR) $(1)/etc/init.d + $(INSTALL_DIR) $(1)/etc/config + $(INSTALL_BIN) ./files/usbgadget.init $(1)/etc/init.d/usbgadget + $(INSTALL_DATA) ./files/usbgadget.config $(1)/etc/config/usbgadget +endef + +$(eval $(call BuildPackage,usbgadget)) diff --git a/package/utils/usbgadget/files/usbgadget.config b/package/utils/usbgadget/files/usbgadget.config new file mode 100644 index 0000000..65f6b5c --- /dev/null +++ b/package/utils/usbgadget/files/usbgadget.config @@ -0,0 +1,21 @@ +config gadget + option type 'acm' + option name 'gadget-acm' + option manufacturer 'OpenWrt' + option product 'OpenWrt USB CDC/ACM' + option serial_number '007' + option usb_vid '0xbeef' + option usb_pid '0x1234' + option udc_dev 'ci_hdrc.0' + option disabled 1 + +config gadget + option type 'acm+rndis' + option name 'gadget-acm-rndis' + option manufacturer 'OpenWrt' + option product 'OpenWrt USB CDC/ACM+RNDIS' + option serial_number '009' + option usb_vid '0xbeef' + option usb_pid '0x9abc' + option udc_dev 'ci_hdrc.0' + option disabled 1 diff --git a/package/utils/usbgadget/files/usbgadget.init b/package/utils/usbgadget/files/usbgadget.init new file mode 100644 index 0000000..b49b6f3 --- /dev/null +++ b/package/utils/usbgadget/files/usbgadget.init @@ -0,0 +1,90 @@ +#!/bin/sh /etc/rc.common + +START=97 + +load_gadget() { + local name + local type + local manufacturer + local product + local serial_number + local usb_vid + local usb_pid + local udc_dev + local disabled + + config_get disabled $1 disabled + [ "$disabled" = "1" ] && return + + config_get usb_vid $1 usb_vid + config_get usb_pid $1 usb_pid + config_get udc_dev $1 udc_dev + [ -z "$usb_vid" -o -z "$usb_pid" -o -z "$udc_dev" ] && return + + config_get type $1 type "acm" + config_get name $1 name "${usb_vid}-acm" + config_get manufacturer $1 manufacturer "OpenWrt" + config_get product $1 product "OpenWrt USB ${type}" + config_get serial_number $1 serial_number "1922" + + local path="/sys/kernel/config/usb_gadget/$name" + mkdir -p "$path" + echo "$usb_vid" > "$path/idVendor" + echo "$usb_pid" > "$path/idProduct" + + local strings="$path/strings/0x409" + mkdir -p "$strings" + echo "$product" > "$strings/product" + echo "$manufacturer" > "$strings/manufacturer" + echo "$serial_number" > "$strings/serialnumber" + + mkdir -p "$path/configs/$name.1" + + case "$type" in + "acm") + mkdir -p "$path/functions/acm.0" + ln -sf "$path/functions/acm.0" "$path/configs/$name.1" + ;; + "acm+rndis") + mkdir -p "$path/functions/acm.0" + mkdir -p "$path/functions/rndis.0" + ln -sf "$path/functions/acm.0" "$path/configs/$name.1" + ln -sf "$path/functions/rndis.0" "$path/configs/$name.1" + ;; + esac + + echo "$udc_dev" > "$path/UDC" +} + +unload_gadget() { + local name + local usb_vid + local udc_dev + local disabled + + config_get disabled $1 disabled + [ "$disabled" = "1" ] && return + + config_get usb_vid $1 usb_vid + config_get udc_dev $1 udc_dev + [ -z "$usb_vid" -o -z "$udc_dev" ] && return + + config_get name $1 name "${usb_vid}-acm" + [ -d "/sys/kernel/config/usb_gadget/$name" ] || return + echo '' > "/sys/kernel/config/usb_gadget/$name/UDC" > /dev/null +} + +stop() { + [ -e /sys/kernel/config/usb_gadget ] || exit 0 + config_load usbgadget + config_foreach unload_gadget gadget +} + +start() { + grep -q configfs /proc/modules || exit 0 + grep -q configfs /proc/mounts || mount -t configfs none /sys/kernel/config + [ -e /sys/kernel/config/usb_gadget ] || exit 0 + + config_load usbgadget + config_foreach load_gadget gadget +} -- 1.9.1 _______________________________________________ openwrt-devel mailing list [email protected] https://lists.openwrt.org/mailman/listinfo/openwrt-devel
