main/linux-rpi: add USB GADGET support

This patch adds CONFIG_USB_GADGET support to rpi and rpi2 kernels.
Modules added are libcomposite, and configfs to make your gadgets work.

https://www.kernel.org/doc/htmldocs/gadget/
https://www.kernel.org/doc/Documentation/usb/gadget_configfs.txt

fixes #5544

3 files changed, 165 insertions, 9 deletions

diff --git a/main/linux-rpi/APKBUILD b/main/linux-rpi/APKBUILD
index d882b7885a..0a0a070f5f 100644
--- a/main/linux-rpi/APKBUILD
+++ b/main/linux-rpi/APKBUILD
@@ -6,7 +6,7 @@ case $pkgver in
 *.*.*)	_kernver=${pkgver%.*};;
 *.*)	_kernver=${pkgver};;
 esac
-pkgrel=0
+pkgrel=1
 pkgdesc="Linux kernel with Raspberry Pi patches"
 url=https://github.com/raspberrypi/linux
 depends="mkinitfs linux-firmware"
@@ -202,8 +202,8 @@ f3bc8a24dab2ad72e3f61ad47c30469d  rpi-cirrus-4.4.y-20160327.patch
 b66e8aa4991ca5c2ccd61559ed7e6491  gpio-mcp23s08-pullups.patch
 5508d2b3e5967bd57f92f551d90b3e54  rotary-encoder-fix.patch
 29281b74d2cef6965fa4ab6d826a2aa4  issue-4973.patch
-c2c7d6e835943ebc9dae9f08a572f5f7  config-rpi.armhf
-c5a71f183893813893e2af1417dd4b58  config-rpi2.armhf
+2f340f5ee3d45b4d4f8cc420f36467b8  config-rpi.armhf
+c91c9be0820bdaaeb4861d26fba7588c  config-rpi2.armhf
 e587cae1dca2f5992555d9bcf53deecf  markdt"
 sha256sums="401d7c8fef594999a460d10c72c5a94e9c2e1022f16795ec51746b0d165418b2  linux-4.4.tar.xz
 11ec99ae0600bd831ff8d71b77e64592f4b6918b7857fd9ff0284ea4cf267b4e  patch-4.4.8.xz
@@ -212,8 +212,8 @@ c97673952b8ad37146aef628373e4b549bd5f8c1172f10310b760b18877df5f0  linux-4.4.y-rp
 b389a556bbd98053881b43deef1adf20640f980557c5f37cfd7ece2daeecbda9  gpio-mcp23s08-pullups.patch
 ab6740577fe8c1d71d2c716720ebbbf9a750985963d6938093b4ca9194b6e871  rotary-encoder-fix.patch
 3a16e927ce53a8c56e7f1dd86fe8ad08b1c06466f5206c521a7e2de1e4796d6c  issue-4973.patch
-dd128c3cafc5abd9be78aacce9a024ab0d0dc7c15bb4b52cc573eeb4a97dda6e  config-rpi.armhf
-d21ac1139ea208153af48234cd0b546c2ea676282168b88f7502cf62b478e077  config-rpi2.armhf
+151d10c414ea7e40908b089099add3a04c626d021bf2c67325791f6c2cea1b17  config-rpi.armhf
+f8a8a950db8961dd01f30fd242d58be5dc2a5eb45963db83e311c4b745a3e7db  config-rpi2.armhf
 0f6681fc5c3590e1dbe13a2bde796403bd1529cf0fe19720899eaa0db79bcb49  markdt"
 sha512sums="13c8459933a8b80608e226a1398e3d1848352ace84bcfb7e6a4a33cb230bbe1ab719d4b58e067283df91ce5311be6d2d595fc8c19e2ae6ecc652499415614b3e  linux-4.4.tar.xz
 d53d6950bc121107fecec91b4cd33473b0b18e7188bd387cd02f3ab4ece0f7dc6f1530ad9b7a44655afb7d823fb94ad8d8710902367c9b12911eb2247a12f2c7  patch-4.4.8.xz
@@ -222,6 +222,6 @@ ff2da3a36159abc8144fbc593561eadd78798297d9bb8d5398f944271624e2a42199d562969bd2bb
 36724ba56cb8fdf3a3d347cffb67ae1cc3d7b1052d526b6b5134ebf6baae9f9724b586c97833453dc7697ab24699426f0749af78b6a80be36967a80033a0cf40  gpio-mcp23s08-pullups.patch
 3a711e2cdb6c0ecaceb3755437d38626dec8403e8aa167a6e16f64d8a8b7cc5bdc7e04aa7c05938719ebc90e319ec4124ee2151a7855e7838ee143b62d140ad0  rotary-encoder-fix.patch
 501c91bf2538a18102da59bbccc3097f9c3c90079acc0e946ff075074160c09b8a66934e5ce5470e170f0e4f93d114709a95230367426d0bb7ea02c4bdf4cc9b  issue-4973.patch
-857b536365adb55cb7d471a4488b3fd150cbec4434dc422e0518588f1e5f653cbf0a28f0e5062ef7e46a458c4348a4ba119f73aa3c820e059db82c5998cd2d88  config-rpi.armhf
-ec8437709d6ad343189564a72ac1286b531872a1cf4f6f473a38569406877f6ddaa0c86968fb599fee64cbddd154cf779444839869c864d37946031e2fca57f4  config-rpi2.armhf
+5a69182c04c01c7e0a1e9584307e5c79eb0fc948d7adcefb6f03db39bf93abc17df09f97e5d2e7866465655121cc988f3a22faf0e5c83c7bbdb7bdeaa0d5e4a1  config-rpi.armhf
+a1b7c09506cdef7200d5c543da237e49c3911ea1cfe6ec951c21c82bfa5661530b5e8e960a688b4e56b55b9153e0546a4c741dc5b1076847472daa74e839ecdb  config-rpi2.armhf
 a4ecd1f48db64f9d6a189250d1937d7f2cd3a049a3d24cc527d04d05db06137722f1ba44bcd6033794781c3f2cfe2fbe065410a16de4bfdf4b1cd95d89322a77  markdt"
diff --git a/main/linux-rpi/config-rpi.armhf b/main/linux-rpi/config-rpi.armhf
index ff4e6f86f2..d550283010 100644
--- a/main/linux-rpi/config-rpi.armhf
+++ b/main/linux-rpi/config-rpi.armhf
@@ -3384,6 +3384,7 @@ CONFIG_USBIP_HOST=m
 # CONFIG_USB_MUSB_HDRC is not set
 # CONFIG_USB_DWC3 is not set
 # CONFIG_USB_DWC2 is not set
+# CONFIG_USB_CHIPIDEA is not set
 # CONFIG_USB_ISP1760 is not set
 
 #
@@ -3492,7 +3493,84 @@ CONFIG_USB_EZUSB_FX2=m
 # CONFIG_USB_GPIO_VBUS is not set
 # CONFIG_USB_ISP1301 is not set
 # CONFIG_USB_ULPI is not set
-# CONFIG_USB_GADGET is not set
+CONFIG_USB_GADGET=m
+# CONFIG_USB_GADGET_DEBUG is not set
+# CONFIG_USB_GADGET_DEBUG_FILES is not set
+# CONFIG_USB_GADGET_DEBUG_FS is not set
+CONFIG_USB_GADGET_VBUS_DRAW=2
+CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS=2
+
+#
+# USB Peripheral Controller
+#
+# CONFIG_USB_FUSB300 is not set
+# CONFIG_USB_FOTG210_UDC is not set
+# CONFIG_USB_GR_UDC is not set
+# CONFIG_USB_R8A66597 is not set
+# CONFIG_USB_PXA27X is not set
+# CONFIG_USB_MV_UDC is not set
+# CONFIG_USB_MV_U3D is not set
+# CONFIG_USB_M66592 is not set
+# CONFIG_USB_BDC_UDC is not set
+# CONFIG_USB_NET2272 is not set
+# CONFIG_USB_GADGET_XILINX is not set
+# CONFIG_USB_DUMMY_HCD is not set
+CONFIG_USB_LIBCOMPOSITE=m
+CONFIG_USB_F_ACM=m
+CONFIG_USB_F_SS_LB=m
+CONFIG_USB_U_SERIAL=m
+CONFIG_USB_U_ETHER=m
+CONFIG_USB_F_SERIAL=m
+CONFIG_USB_F_OBEX=m
+CONFIG_USB_F_NCM=m
+CONFIG_USB_F_ECM=m
+CONFIG_USB_F_EEM=m
+CONFIG_USB_F_SUBSET=m
+CONFIG_USB_F_RNDIS=m
+CONFIG_USB_F_MASS_STORAGE=m
+CONFIG_USB_F_FS=m
+CONFIG_USB_F_UAC1=m
+CONFIG_USB_F_UAC2=m
+CONFIG_USB_F_UVC=m
+CONFIG_USB_F_MIDI=m
+CONFIG_USB_F_HID=m
+CONFIG_USB_F_PRINTER=m
+CONFIG_USB_CONFIGFS=m
+CONFIG_USB_CONFIGFS_SERIAL=y
+CONFIG_USB_CONFIGFS_ACM=y
+CONFIG_USB_CONFIGFS_OBEX=y
+CONFIG_USB_CONFIGFS_NCM=y
+CONFIG_USB_CONFIGFS_ECM=y
+CONFIG_USB_CONFIGFS_ECM_SUBSET=y
+CONFIG_USB_CONFIGFS_RNDIS=y
+CONFIG_USB_CONFIGFS_EEM=y
+CONFIG_USB_CONFIGFS_MASS_STORAGE=y
+CONFIG_USB_CONFIGFS_F_LB_SS=y
+CONFIG_USB_CONFIGFS_F_FS=y
+CONFIG_USB_CONFIGFS_F_UAC1=y
+CONFIG_USB_CONFIGFS_F_UAC2=y
+CONFIG_USB_CONFIGFS_F_MIDI=y
+CONFIG_USB_CONFIGFS_F_HID=y
+CONFIG_USB_CONFIGFS_F_UVC=y
+CONFIG_USB_CONFIGFS_F_PRINTER=y
+# CONFIG_USB_ZERO is not set
+# CONFIG_USB_AUDIO is not set
+# CONFIG_USB_ETH is not set
+# CONFIG_USB_G_NCM is not set
+# CONFIG_USB_GADGETFS is not set
+# CONFIG_USB_FUNCTIONFS is not set
+# CONFIG_USB_MASS_STORAGE is not set
+# CONFIG_USB_G_SERIAL is not set
+# CONFIG_USB_MIDI_GADGET is not set
+# CONFIG_USB_G_PRINTER is not set
+# CONFIG_USB_CDC_COMPOSITE is not set
+# CONFIG_USB_G_ACM_MS is not set
+CONFIG_USB_G_MULTI=m
+# CONFIG_USB_G_MULTI_RNDIS is not set
+CONFIG_USB_G_MULTI_CDC=y
+# CONFIG_USB_G_HID is not set
+# CONFIG_USB_G_DBGP is not set
+# CONFIG_USB_G_WEBCAM is not set
 # CONFIG_USB_LED_TRIG is not set
 # CONFIG_UWB is not set
 CONFIG_MMC=y
diff --git a/main/linux-rpi/config-rpi2.armhf b/main/linux-rpi/config-rpi2.armhf
index 924729f961..4f376b76fd 100644
--- a/main/linux-rpi/config-rpi2.armhf
+++ b/main/linux-rpi/config-rpi2.armhf
@@ -3438,6 +3438,7 @@ CONFIG_USBIP_HOST=m
 # CONFIG_USB_MUSB_HDRC is not set
 # CONFIG_USB_DWC3 is not set
 # CONFIG_USB_DWC2 is not set
+# CONFIG_USB_CHIPIDEA is not set
 # CONFIG_USB_ISP1760 is not set
 
 #
@@ -3546,7 +3547,84 @@ CONFIG_USB_EZUSB_FX2=m
 # CONFIG_USB_GPIO_VBUS is not set
 # CONFIG_USB_ISP1301 is not set
 # CONFIG_USB_ULPI is not set
-# CONFIG_USB_GADGET is not set
+CONFIG_USB_GADGET=m
+# CONFIG_USB_GADGET_DEBUG is not set
+# CONFIG_USB_GADGET_DEBUG_FILES is not set
+# CONFIG_USB_GADGET_DEBUG_FS is not set
+CONFIG_USB_GADGET_VBUS_DRAW=2
+CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS=2
+
+#
+# USB Peripheral Controller
+#
+# CONFIG_USB_FUSB300 is not set
+# CONFIG_USB_FOTG210_UDC is not set
+# CONFIG_USB_GR_UDC is not set
+# CONFIG_USB_R8A66597 is not set
+# CONFIG_USB_PXA27X is not set
+# CONFIG_USB_MV_UDC is not set
+# CONFIG_USB_MV_U3D is not set
+# CONFIG_USB_M66592 is not set
+# CONFIG_USB_BDC_UDC is not set
+# CONFIG_USB_NET2272 is not set
+# CONFIG_USB_GADGET_XILINX is not set
+# CONFIG_USB_DUMMY_HCD is not set
+CONFIG_USB_LIBCOMPOSITE=m
+CONFIG_USB_F_ACM=m
+CONFIG_USB_F_SS_LB=m
+CONFIG_USB_U_SERIAL=m
+CONFIG_USB_U_ETHER=m
+CONFIG_USB_F_SERIAL=m
+CONFIG_USB_F_OBEX=m
+CONFIG_USB_F_NCM=m
+CONFIG_USB_F_ECM=m
+CONFIG_USB_F_EEM=m
+CONFIG_USB_F_SUBSET=m
+CONFIG_USB_F_RNDIS=m
+CONFIG_USB_F_MASS_STORAGE=m
+CONFIG_USB_F_FS=m
+CONFIG_USB_F_UAC1=m
+CONFIG_USB_F_UAC2=m
+CONFIG_USB_F_UVC=m
+CONFIG_USB_F_MIDI=m
+CONFIG_USB_F_HID=m
+CONFIG_USB_F_PRINTER=m
+CONFIG_USB_CONFIGFS=m
+CONFIG_USB_CONFIGFS_SERIAL=y
+CONFIG_USB_CONFIGFS_ACM=y
+CONFIG_USB_CONFIGFS_OBEX=y
+CONFIG_USB_CONFIGFS_NCM=y
+CONFIG_USB_CONFIGFS_ECM=y
+CONFIG_USB_CONFIGFS_ECM_SUBSET=y
+CONFIG_USB_CONFIGFS_RNDIS=y
+CONFIG_USB_CONFIGFS_EEM=y
+CONFIG_USB_CONFIGFS_MASS_STORAGE=y
+CONFIG_USB_CONFIGFS_F_LB_SS=y
+CONFIG_USB_CONFIGFS_F_FS=y
+CONFIG_USB_CONFIGFS_F_UAC1=y
+CONFIG_USB_CONFIGFS_F_UAC2=y
+CONFIG_USB_CONFIGFS_F_MIDI=y
+CONFIG_USB_CONFIGFS_F_HID=y
+CONFIG_USB_CONFIGFS_F_UVC=y
+CONFIG_USB_CONFIGFS_F_PRINTER=y
+# CONFIG_USB_ZERO is not set
+# CONFIG_USB_AUDIO is not set
+# CONFIG_USB_ETH is not set
+# CONFIG_USB_G_NCM is not set
+# CONFIG_USB_GADGETFS is not set
+# CONFIG_USB_FUNCTIONFS is not set
+# CONFIG_USB_MASS_STORAGE is not set
+# CONFIG_USB_G_SERIAL is not set
+# CONFIG_USB_MIDI_GADGET is not set
+# CONFIG_USB_G_PRINTER is not set
+# CONFIG_USB_CDC_COMPOSITE is not set
+# CONFIG_USB_G_ACM_MS is not set
+CONFIG_USB_G_MULTI=m
+# CONFIG_USB_G_MULTI_RNDIS is not set
+CONFIG_USB_G_MULTI_CDC=y
+# CONFIG_USB_G_HID is not set
+# CONFIG_USB_G_DBGP is not set
+# CONFIG_USB_G_WEBCAM is not set
 # CONFIG_USB_LED_TRIG is not set
 # CONFIG_UWB is not set
 CONFIG_MMC=y