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author | Andrzej Pietrasiewicz <andrzej.p@samsung.com> | 2013-05-28 09:15:56 +0200 |
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committer | Felipe Balbi <balbi@ti.com> | 2013-06-10 17:58:08 +0300 |
commit | 02832e56f88a981474ee4c7c141f46fc1b4454f4 (patch) | |
tree | 9d69ab395696bb866ec54f17f2ecc4c67dbda84d /drivers/usb/gadget/f_subset.c | |
parent | 74bf963d1d230b0cedbcbc46f6f15f20c2e3ee55 (diff) | |
download | op-kernel-dev-02832e56f88a981474ee4c7c141f46fc1b4454f4.zip op-kernel-dev-02832e56f88a981474ee4c7c141f46fc1b4454f4.tar.gz |
usb: gadget: f_subset: add configfs support
f_subset learns about configfs so we can, eventually,
remove in-kernel gadget drivers.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/gadget/f_subset.c')
-rw-r--r-- | drivers/usb/gadget/f_subset.c | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/drivers/usb/gadget/f_subset.c b/drivers/usb/gadget/f_subset.c index 089881a..fbc7a24 100644 --- a/drivers/usb/gadget/f_subset.c +++ b/drivers/usb/gadget/f_subset.c @@ -17,6 +17,7 @@ #include <linux/etherdevice.h> #include "u_ether.h" +#include "u_ether_configfs.h" #include "u_gether.h" /* @@ -313,8 +314,10 @@ geth_bind(struct usb_configuration *c, struct usb_function *f) * with regard to gether_opts->bound access */ if (!gether_opts->bound) { + mutex_lock(&gether_opts->lock); gether_set_gadget(gether_opts->net, cdev->gadget); status = gether_register_netdev(gether_opts->net); + mutex_unlock(&gether_opts->lock); if (status) return status; gether_opts->bound = true; @@ -445,6 +448,41 @@ int geth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN], #else +static inline struct f_gether_opts *to_f_gether_opts(struct config_item *item) +{ + return container_of(to_config_group(item), struct f_gether_opts, + func_inst.group); +} + +/* f_gether_item_ops */ +USB_ETHERNET_CONFIGFS_ITEM(gether); + +/* f_gether_opts_dev_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_DEV_ADDR(gether); + +/* f_gether_opts_host_addr */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_HOST_ADDR(gether); + +/* f_gether_opts_qmult */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_QMULT(gether); + +/* f_gether_opts_ifname */ +USB_ETHERNET_CONFIGFS_ITEM_ATTR_IFNAME(gether); + +static struct configfs_attribute *gether_attrs[] = { + &f_gether_opts_dev_addr.attr, + &f_gether_opts_host_addr.attr, + &f_gether_opts_qmult.attr, + &f_gether_opts_ifname.attr, + NULL, +}; + +static struct config_item_type gether_func_type = { + .ct_item_ops = &gether_item_ops, + .ct_attrs = gether_attrs, + .ct_owner = THIS_MODULE, +}; + static void geth_free_inst(struct usb_function_instance *f) { struct f_gether_opts *opts; @@ -464,12 +502,15 @@ static struct usb_function_instance *geth_alloc_inst(void) opts = kzalloc(sizeof(*opts), GFP_KERNEL); if (!opts) return ERR_PTR(-ENOMEM); - + mutex_init(&opts->lock); opts->func_inst.free_func_inst = geth_free_inst; opts->net = gether_setup_default(); if (IS_ERR(opts->net)) return ERR_CAST(opts->net); + config_group_init_type_name(&opts->func_inst.group, "", + &gether_func_type); + return &opts->func_inst; } @@ -500,6 +541,8 @@ static struct usb_function *geth_alloc(struct usb_function_instance *fi) opts = container_of(fi, struct f_gether_opts, func_inst); + mutex_lock(&opts->lock); + opts->refcnt++; /* export host's Ethernet address in CDC format */ status = gether_get_host_addr_cdc(opts->net, geth->ethaddr, sizeof(geth->ethaddr)); @@ -510,6 +553,7 @@ static struct usb_function *geth_alloc(struct usb_function_instance *fi) geth_string_defs[1].s = geth->ethaddr; geth->port.ioport = netdev_priv(opts->net); + mutex_unlock(&opts->lock); geth->port.cdc_filter = DEFAULT_FILTER; geth->port.func.name = "cdc_subset"; |