*/
#define USB_GADGET_DEVICE_VERSION MAKE_VERSION(0,1)
-#define _HELPER_Y(x) ((x) & -(x))
+typedef enum {
+ USB_FUNCTION_IDX_MTP = 0,
+ USB_FUNCTION_IDX_ACM = 1,
+ USB_FUNCTION_IDX_SDB = 2,
+ USB_FUNCTION_IDX_RNDIS = 3,
+ USB_FUNCTION_IDX_DIAG = 4,
+ USB_FUNCTION_IDX_CONN_GADGET = 5,
+ USB_FUNCTION_IDX_DM = 6,
+ USB_FUNCTION_IDX_RMNET = 7,
+ USB_FUNCTION_IDX_MAX = USB_FUNCTION_IDX_RMNET + 1
+} usb_function_idx_e;
-/* Count number of trailing zeros using Dean Gaudet's algorithm */
-#define _HELPER_CTZ(mask) \
- ((_HELPER_Y(mask) ? 0 : 1) + \
- ((_HELPER_Y(mask) & 0x0000FFFF) ? 0 : 16) + \
- ((_HELPER_Y(mask) & 0x00FF00FF) ? 0 : 8) + \
- ((_HELPER_Y(mask) & 0x0F0F0F0F) ? 0 : 4) + \
- ((_HELPER_Y(mask) & 0x33333333) ? 0 : 2) + \
- ((_HELPER_Y(mask) & 0x55555555) ? 0 : 1))
+typedef enum {
+ USB_FUNCTION_NONE = 0,
+ USB_FUNCTION_MTP = 1 << USB_FUNCTION_IDX_MTP,
+ USB_FUNCTION_ACM = 1 << USB_FUNCTION_IDX_ACM,
+ USB_FUNCTION_SDB = 1 << USB_FUNCTION_IDX_SDB,
+ USB_FUNCTION_RNDIS = 1 << USB_FUNCTION_IDX_RNDIS,
+ USB_FUNCTION_DIAG = 1 << USB_FUNCTION_IDX_DIAG,
+ USB_FUNCTION_CONN_GADGET = 1 << USB_FUNCTION_IDX_CONN_GADGET,
+ USB_FUNCTION_DM = 1 << USB_FUNCTION_IDX_DM,
+ USB_FUNCTION_RMNET = 1 << USB_FUNCTION_IDX_RMNET
+} usb_function_e;
-/* Function IDX in array is number of trailing zeros */
-#define FUNC_IDX_FROM_MASK(mask) _HELPER_CTZ(mask)
+/*
+ * legacy enable(usb plug) : enable gadget -> handler(1) -> ffs_service start -> service start
+ * legacy disable(usb unplug) : service stop -> ffs_service stop -> handler(0) -> disable gadget
+ *
+ * configfs init(booting) : ffs_service.socket start
+ * configfs enable(usb plug)* : enable gadget -> handler(1) -> service start
+ * configfs disable(usb unplug) : service stop -> handler(0) -> disable gadget -> ffs_service.service stop
+ * configfs deinit : ffs_service.socket stop
+ *
+ * Since ffs_service works by socket activation, it will be started automatically when data is enqueued to the usb socket.
+ * So when enabling configfs gadget, it doesn't start ffs_service.
+ */
struct usb_function {
int id;
const char *name;
const char *ffs_service; /* only used in configfs */
const char *service;
+ void (*handler)(int enable);
+
int (*clone)(struct usb_function *func, struct usb_function **_clone);
void (*free_func)(struct usb_function *func);
};
struct usb_configuration **configs;
};
-typedef enum {
- USB_FUNCTION_NONE = 0,
- USB_FUNCTION_MTP = 1 << 0,
- USB_FUNCTION_ACM = 1 << 1,
- USB_FUNCTION_SDB = 1 << 2,
- USB_FUNCTION_RNDIS = 1 << 3,
- USB_FUNCTION_DIAG = 1 << 4,
- USB_FUNCTION_CONN_GADGET = 1 << 5,
- USB_FUNCTION_DM = 1 << 6,
- USB_FUNCTION_RMNET = 1 << 7,
-} usb_function_e;
-
-static void free_simple_func(struct usb_function *func)
-{
- if (func) {
- free((void *)func->name);
- free((void *)func->instance);
- free((void *)func->service);
- free(func);
- }
-}
-
-static int clone_simple_func(struct usb_function *func,
- struct usb_function **clone)
-{
- struct usb_function *other;
-
- if (!func || !clone)
- return -EINVAL;
-
- other = (struct usb_function *)calloc(1, sizeof(struct usb_function));
- if (!other)
- return -ENOMEM;
-
- *other = *func;
-
- other->name = strdup(func->name);
- other->instance = strdup(func->instance);
- if (!other->name || !other->instance)
- goto out_nomem;
-
- if (func->service) {
- other->service = strdup(func->service);
- if (!other->service)
- goto out_nomem;
- }
-
- *clone = other;
- return 0;
-
-out_nomem:
- free_simple_func(other);
- return -ENOMEM;
-}
-
-#define DEFINE_USB_FUNCTION(_id, _name, _ffs_service, _service) \
- static struct usb_function _##_name##_function = { \
- .id = _id, \
- .name = #_name, \
- .instance = "default", \
- .ffs_service = _ffs_service, \
- .service = _service, \
- .clone = clone_simple_func, \
- .free_func = free_simple_func, \
- }
-
-DEFINE_USB_FUNCTION(USB_FUNCTION_DIAG, diag, NULL, NULL);
-DEFINE_USB_FUNCTION(USB_FUNCTION_RMNET, rmnet, NULL, NULL);
-DEFINE_USB_FUNCTION(USB_FUNCTION_DM, dm, NULL, NULL);
-DEFINE_USB_FUNCTION(USB_FUNCTION_CONN_GADGET, conn_gadget, NULL, NULL);
-DEFINE_USB_FUNCTION(USB_FUNCTION_SDB, sdb, "sdbd", NULL);
-DEFINE_USB_FUNCTION(USB_FUNCTION_MTP, mtp, "mtp-responder", NULL);
-DEFINE_USB_FUNCTION(USB_FUNCTION_ACM, acm, NULL, "data-router");
-DEFINE_USB_FUNCTION(USB_FUNCTION_RNDIS, rndis, NULL, "rndis");
-#undef DEFINE_USB_FUNCTION
-
-#define MAKE_FUNC_AVAILABLE(_name, _vname) \
- [FUNC_IDX_FROM_MASK(USB_FUNCTION_##_name)] = &_##_vname##_function
-
-static struct usb_function *_available_funcs[] = {
- MAKE_FUNC_AVAILABLE(MTP, mtp),
- MAKE_FUNC_AVAILABLE(ACM, acm),
- MAKE_FUNC_AVAILABLE(SDB, sdb),
- MAKE_FUNC_AVAILABLE(RNDIS, rndis),
- MAKE_FUNC_AVAILABLE(DIAG, diag),
- MAKE_FUNC_AVAILABLE(CONN_GADGET, conn_gadget),
- MAKE_FUNC_AVAILABLE(DM, dm),
- MAKE_FUNC_AVAILABLE(RMNET, rmnet),
-};
-#undef MAKE_FUNC_AVAILABLE
-
struct usb_gadget_id {
unsigned int function_mask;
};
const char *id, struct hw_common **common);
int simple_translator_close(struct hw_common *common);
+extern struct usb_function *_available_funcs[];
+
#endif
projects / platform / core / system / libdevice-node.git / blobdiff