From 83408745b202695e8911d71a9854c517e565c343 Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Thu, 23 May 2013 10:51:15 +0200 Subject: [PATCH] usb: gadget: f_phonet: add configfs support f_phonet learns about configfs so we can remove in-kernel gadget drivers. Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Kyungmin Park Signed-off-by: Felipe Balbi --- .../ABI/testing/configfs-usb-gadget-phonet | 8 +++ drivers/usb/gadget/Kconfig | 10 ++++ drivers/usb/gadget/f_phonet.c | 56 +++++++++++++++++++ 3 files changed, 74 insertions(+) create mode 100644 Documentation/ABI/testing/configfs-usb-gadget-phonet diff --git a/Documentation/ABI/testing/configfs-usb-gadget-phonet b/Documentation/ABI/testing/configfs-usb-gadget-phonet new file mode 100644 index 00000000000..19b67d3eab9 --- /dev/null +++ b/Documentation/ABI/testing/configfs-usb-gadget-phonet @@ -0,0 +1,8 @@ +What: /config/usb-gadget/gadget/functions/phonet.name +Date: May 2013 +KenelVersion: 3.11 +Description: + + This item contains just one readonly attribute: ifname. + It contains the network interface name assigned during + network device registration. diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 5022c2d3e36..d6c4e601d71 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -541,6 +541,16 @@ choice # this first set of drivers all depend on bulk-capable hardware. +config USB_CONFIGFS_PHONET + boolean "Phonet protocol" + depends on USB_CONFIGFS + depends on NET + depends on PHONET + select USB_U_ETHER + select USB_F_PHONET + help + The Phonet protocol implementation for USB device. + config USB_ZERO tristate "Gadget Zero (DEVELOPMENT)" select USB_LIBCOMPOSITE diff --git a/drivers/usb/gadget/f_phonet.c b/drivers/usb/gadget/f_phonet.c index 5dd77487616..7944fb0efe3 100644 --- a/drivers/usb/gadget/f_phonet.c +++ b/drivers/usb/gadget/f_phonet.c @@ -26,6 +26,7 @@ #include #include "u_phonet.h" +#include "u_ether.h" #define PN_MEDIA_USB 0x1B #define MAXPACKET 512 @@ -581,6 +582,58 @@ err: return status; } +static inline struct f_phonet_opts *to_f_phonet_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_phonet_opts, + func_inst.group); +} + +CONFIGFS_ATTR_STRUCT(f_phonet_opts); +static ssize_t f_phonet_attr_show(struct config_item *item, + struct configfs_attribute *attr, + char *page) +{ + struct f_phonet_opts *opts = to_f_phonet_opts(item); + struct f_phonet_opts_attribute *f_phonet_opts_attr = + container_of(attr, struct f_phonet_opts_attribute, attr); + ssize_t ret = 0; + + if (f_phonet_opts_attr->show) + ret = f_phonet_opts_attr->show(opts, page); + return ret; +} + +static void phonet_attr_release(struct config_item *item) +{ + struct f_phonet_opts *opts = to_f_phonet_opts(item); + + usb_put_function_instance(&opts->func_inst); +} + +static struct configfs_item_operations phonet_item_ops = { + .release = phonet_attr_release, + .show_attribute = f_phonet_attr_show, +}; + +static ssize_t f_phonet_ifname_show(struct f_phonet_opts *opts, char *page) +{ + return gether_get_ifname(opts->net, page, PAGE_SIZE); +} + +static struct f_phonet_opts_attribute f_phonet_ifname = + __CONFIGFS_ATTR_RO(ifname, f_phonet_ifname_show); + +static struct configfs_attribute *phonet_attrs[] = { + &f_phonet_ifname.attr, + NULL, +}; + +static struct config_item_type phonet_func_type = { + .ct_item_ops = &phonet_item_ops, + .ct_attrs = phonet_attrs, + .ct_owner = THIS_MODULE, +}; + static void phonet_free_inst(struct usb_function_instance *f) { struct f_phonet_opts *opts; @@ -606,6 +659,9 @@ static struct usb_function_instance *phonet_alloc_inst(void) if (IS_ERR(opts->net)) return ERR_PTR(PTR_ERR(opts->net)); + config_group_init_type_name(&opts->func_inst.group, "", + &phonet_func_type); + return &opts->func_inst; } -- 2.34.1