Here I present the conversion of everything that is required to provide the equivalent of g_acm_ms.ko with configfs. In fact this series consists of just one patch; everything required to provide the equivalent of g_acm_ms.ko with configfs has been done in the series related to the g_mass_storage.ko. The current series just moves the g_acm_ms to the new function interface of f_mass_storage. v1..v2: - removed the cause of Felipe returning -ENOLOG - moved fsg_common_set_sysfs invocation after the lun number is set, so that the latter operation does not try freeing nonexistent sysfs entries A branch will be available here from 31st July: git://git.infradead.org/users/kmpark/linux-samsung usb-gadget-configfs BACKWARD COMPATIBILITY ====================== Please note that the old g_acm_ms.ko is still available and works. USING THE NEW "GADGET" ====================== Please refer to this post: http://www.spinics.net/lists/linux-usb/msg76388.html for general information from Sebastian on how to use configfs-based gadgets (*). The g_acm_ms.ko provides 2 functions: - acm (described in (*)) - mass storage (described in a series preceding the current one, I will reply to this post to send a link when spinics or gmane has indexed the series in question) The procedure of setting up such a gadget with configfs is given below with an example: $ modprobe libcomposite $ mount none cfg -t configfs $ mkdir cfg/usb_gadget/g1 $ cd cfg/usb_gadget/g1 $ echo 0x0106 > idProduct $ echo 0x04e8 > idVendor $ mkdir strings/0x409 $ echo my-serial-number > strings/0x409/serialnumber $ echo my-manufacturer > strings/0x409/manufacturer $ echo "ACM/MS Gadget" > strings/0x409/product $ mkdir configs/c.1 $ echo 120 > configs/c.1/MaxPower $ mkdir configs/c.1/strings/0x409 $ echo "Conf 1" > configs/c.1/strings/0x409/configuration $ mkdir functions/mass_storage.0 $ echo /root/lun0.img > functions/mass_storage.0/lun.0/file $ mkdir functions/mass_storage.0/lun.1 $ echo /root/lun1.img > functions/mass_storage.0/lun.1/file $ mkdir functions/acm.usb0 $ ln -s functions/mass_storage.0 configs/c.1 $ ln -s functions/acm.usb0 configs/c.1 $ echo s3c-hsotg > UDC After unbinding the gadget with echo "" > UDC the symbolic links in the configuration directory can be removed, the strings/* subdirectories in the configuration directory can be removed, the strings/* subdirectories at the gadget level can be removed and the configs/* subdirectories can be removed. The functions/* subdirectories can be removed. After that the gadget directory can be removed. After that the respective modules can be unloaded. TESTING THE FUNCTIONS ==================== acm) On the host: cat > /dev/ttyACM0 On the device: cat /dev/ttyGS0 and then the other way round: cat > /dev/ttyGS0 cat /dev/ttyACM0 mass storage) device: connect the gadget, enable it host: dmesg, see the USB drives appear (if system configured to automatically mount) Andrzej Pietrasiewicz (1): usb/gadget: acm_ms: convert to new interface of f_mass_storage drivers/usb/gadget/Kconfig | 1 + drivers/usb/gadget/acm_ms.c | 113 ++++++++++++++++++++++++++++--------------- 2 files changed, 75 insertions(+), 39 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
