usb: gadget: f_obex: convert to new function interface with backward compatibility
Converting f_obex to the new function interface requires converting
the f_obex's function code and its users.
This patch converts the f_obex.c to the new function interface.
The file is now compiled into a separate usb_f_obex.ko module.
The old function interface is provided by means of preprocessor
conditional directives. After all users are converted, the old interface
can be removed.
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>
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 93217fc..a5f67e1 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -508,6 +508,9 @@
config USB_F_SERIAL
tristate
+config USB_F_OBEX
+ tristate
+
choice
tristate "USB Gadget Drivers"
default USB_ETH
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 34bb49a..6afd166 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -43,6 +43,8 @@
obj-$(CONFIG_USB_U_SERIAL) += u_serial.o
usb_f_serial-y := f_serial.o
obj-$(CONFIG_USB_F_SERIAL) += usb_f_serial.o
+usb_f_obex-y := f_obex.o
+obj-$(CONFIG_USB_F_OBEX) += usb_f_obex.o
#
# USB gadget drivers
diff --git a/drivers/usb/gadget/f_obex.c b/drivers/usb/gadget/f_obex.c
index 36a0045..439b666 100644
--- a/drivers/usb/gadget/f_obex.c
+++ b/drivers/usb/gadget/f_obex.c
@@ -72,7 +72,7 @@
/*-------------------------------------------------------------------------*/
-static struct usb_interface_descriptor obex_control_intf __initdata = {
+static struct usb_interface_descriptor obex_control_intf = {
.bLength = sizeof(obex_control_intf),
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 0,
@@ -83,7 +83,7 @@
.bInterfaceSubClass = USB_CDC_SUBCLASS_OBEX,
};
-static struct usb_interface_descriptor obex_data_nop_intf __initdata = {
+static struct usb_interface_descriptor obex_data_nop_intf = {
.bLength = sizeof(obex_data_nop_intf),
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 1,
@@ -93,7 +93,7 @@
.bInterfaceClass = USB_CLASS_CDC_DATA,
};
-static struct usb_interface_descriptor obex_data_intf __initdata = {
+static struct usb_interface_descriptor obex_data_intf = {
.bLength = sizeof(obex_data_intf),
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 2,
@@ -103,14 +103,14 @@
.bInterfaceClass = USB_CLASS_CDC_DATA,
};
-static struct usb_cdc_header_desc obex_cdc_header_desc __initdata = {
+static struct usb_cdc_header_desc obex_cdc_header_desc = {
.bLength = sizeof(obex_cdc_header_desc),
.bDescriptorType = USB_DT_CS_INTERFACE,
.bDescriptorSubType = USB_CDC_HEADER_TYPE,
.bcdCDC = cpu_to_le16(0x0120),
};
-static struct usb_cdc_union_desc obex_cdc_union_desc __initdata = {
+static struct usb_cdc_union_desc obex_cdc_union_desc = {
.bLength = sizeof(obex_cdc_union_desc),
.bDescriptorType = USB_DT_CS_INTERFACE,
.bDescriptorSubType = USB_CDC_UNION_TYPE,
@@ -118,7 +118,7 @@
.bSlaveInterface0 = 2,
};
-static struct usb_cdc_obex_desc obex_desc __initdata = {
+static struct usb_cdc_obex_desc obex_desc = {
.bLength = sizeof(obex_desc),
.bDescriptorType = USB_DT_CS_INTERFACE,
.bDescriptorSubType = USB_CDC_OBEX_TYPE,
@@ -127,7 +127,7 @@
/* High-Speed Support */
-static struct usb_endpoint_descriptor obex_hs_ep_out_desc __initdata = {
+static struct usb_endpoint_descriptor obex_hs_ep_out_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -136,7 +136,7 @@
.wMaxPacketSize = cpu_to_le16(512),
};
-static struct usb_endpoint_descriptor obex_hs_ep_in_desc __initdata = {
+static struct usb_endpoint_descriptor obex_hs_ep_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -145,7 +145,7 @@
.wMaxPacketSize = cpu_to_le16(512),
};
-static struct usb_descriptor_header *hs_function[] __initdata = {
+static struct usb_descriptor_header *hs_function[] = {
(struct usb_descriptor_header *) &obex_control_intf,
(struct usb_descriptor_header *) &obex_cdc_header_desc,
(struct usb_descriptor_header *) &obex_desc,
@@ -160,7 +160,7 @@
/* Full-Speed Support */
-static struct usb_endpoint_descriptor obex_fs_ep_in_desc __initdata = {
+static struct usb_endpoint_descriptor obex_fs_ep_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -168,7 +168,7 @@
.bmAttributes = USB_ENDPOINT_XFER_BULK,
};
-static struct usb_endpoint_descriptor obex_fs_ep_out_desc __initdata = {
+static struct usb_endpoint_descriptor obex_fs_ep_out_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -176,7 +176,7 @@
.bmAttributes = USB_ENDPOINT_XFER_BULK,
};
-static struct usb_descriptor_header *fs_function[] __initdata = {
+static struct usb_descriptor_header *fs_function[] = {
(struct usb_descriptor_header *) &obex_control_intf,
(struct usb_descriptor_header *) &obex_cdc_header_desc,
(struct usb_descriptor_header *) &obex_desc,
@@ -290,14 +290,43 @@
/*-------------------------------------------------------------------------*/
-static int __init
-obex_bind(struct usb_configuration *c, struct usb_function *f)
+/* Some controllers can't support CDC OBEX ... */
+static inline bool can_support_obex(struct usb_configuration *c)
+{
+ /* Since the first interface is a NOP, we can ignore the
+ * issue of multi-interface support on most controllers.
+ *
+ * Altsettings are mandatory, however...
+ */
+ if (!gadget_supports_altsettings(c->cdev->gadget))
+ return false;
+
+ /* everything else is *probably* fine ... */
+ return true;
+}
+
+static int obex_bind(struct usb_configuration *c, struct usb_function *f)
{
struct usb_composite_dev *cdev = c->cdev;
struct f_obex *obex = func_to_obex(f);
int status;
struct usb_ep *ep;
+ if (!can_support_obex(c))
+ return -EINVAL;
+
+ if (obex_string_defs[OBEX_CTRL_IDX].id == 0) {
+ status = usb_string_ids_tab(c->cdev, obex_string_defs);
+ if (status < 0)
+ return status;
+ obex_control_intf.iInterface =
+ obex_string_defs[OBEX_CTRL_IDX].id;
+
+ status = obex_string_defs[OBEX_DATA_IDX].id;
+ obex_data_nop_intf.iInterface = status;
+ obex_data_intf.iInterface = status;
+ }
+
/* allocate instance-specific interface IDs, and patch descriptors */
status = usb_interface_id(c, f);
@@ -376,29 +405,16 @@
return status;
}
+#ifdef USBF_OBEX_INCLUDED
+
static void
-obex_unbind(struct usb_configuration *c, struct usb_function *f)
+obex_old_unbind(struct usb_configuration *c, struct usb_function *f)
{
obex_string_defs[OBEX_CTRL_IDX].id = 0;
usb_free_all_descriptors(f);
kfree(func_to_obex(f));
}
-/* Some controllers can't support CDC OBEX ... */
-static inline bool can_support_obex(struct usb_configuration *c)
-{
- /* Since the first interface is a NOP, we can ignore the
- * issue of multi-interface support on most controllers.
- *
- * Altsettings are mandatory, however...
- */
- if (!gadget_supports_altsettings(c->cdev->gadget))
- return false;
-
- /* everything else is *probably* fine ... */
- return true;
-}
-
/**
* obex_bind_config - add a CDC OBEX function to a configuration
* @c: the configuration to support the CDC OBEX instance
@@ -412,21 +428,6 @@
struct f_obex *obex;
int status;
- if (!can_support_obex(c))
- return -EINVAL;
-
- if (obex_string_defs[OBEX_CTRL_IDX].id == 0) {
- status = usb_string_ids_tab(c->cdev, obex_string_defs);
- if (status < 0)
- return status;
- obex_control_intf.iInterface =
- obex_string_defs[OBEX_CTRL_IDX].id;
-
- status = obex_string_defs[OBEX_DATA_IDX].id;
- obex_data_nop_intf.iInterface = status;
- obex_data_intf.iInterface = status;
- }
-
/* allocate and initialize one new instance */
obex = kzalloc(sizeof *obex, GFP_KERNEL);
if (!obex)
@@ -441,7 +442,7 @@
obex->port.func.strings = obex_strings;
/* descriptors are per-instance copies */
obex->port.func.bind = obex_bind;
- obex->port.func.unbind = obex_unbind;
+ obex->port.func.unbind = obex_old_unbind;
obex->port.func.set_alt = obex_set_alt;
obex->port.func.get_alt = obex_get_alt;
obex->port.func.disable = obex_disable;
@@ -453,5 +454,83 @@
return status;
}
+#else
+
+static void obex_free_inst(struct usb_function_instance *f)
+{
+ struct f_serial_opts *opts;
+
+ opts = container_of(f, struct f_serial_opts, func_inst);
+ gserial_free_line(opts->port_num);
+ kfree(opts);
+}
+
+static struct usb_function_instance *obex_alloc_inst(void)
+{
+ struct f_serial_opts *opts;
+ int ret;
+
+ opts = kzalloc(sizeof(*opts), GFP_KERNEL);
+ if (!opts)
+ return ERR_PTR(-ENOMEM);
+
+ opts->func_inst.free_func_inst = obex_free_inst;
+ ret = gserial_alloc_line(&opts->port_num);
+ if (ret) {
+ kfree(opts);
+ return ERR_PTR(ret);
+ }
+
+ return &opts->func_inst;
+}
+
+static void obex_free(struct usb_function *f)
+{
+ struct f_obex *obex;
+
+ obex = func_to_obex(f);
+ kfree(obex);
+}
+
+static void obex_unbind(struct usb_configuration *c, struct usb_function *f)
+{
+ obex_string_defs[OBEX_CTRL_IDX].id = 0;
+ usb_free_all_descriptors(f);
+}
+
+struct usb_function *obex_alloc(struct usb_function_instance *fi)
+{
+ struct f_obex *obex;
+ struct f_serial_opts *opts;
+
+ /* allocate and initialize one new instance */
+ obex = kzalloc(sizeof(*obex), GFP_KERNEL);
+ if (!obex)
+ return ERR_PTR(-ENOMEM);
+
+ opts = container_of(fi, struct f_serial_opts, func_inst);
+
+ obex->port_num = opts->port_num;
+
+ obex->port.connect = obex_connect;
+ obex->port.disconnect = obex_disconnect;
+
+ obex->port.func.name = "obex";
+ obex->port.func.strings = obex_strings;
+ /* descriptors are per-instance copies */
+ obex->port.func.bind = obex_bind;
+ obex->port.func.unbind = obex_unbind;
+ obex->port.func.set_alt = obex_set_alt;
+ obex->port.func.get_alt = obex_get_alt;
+ obex->port.func.disable = obex_disable;
+ obex->port.func.free_func = obex_free;
+
+ return &obex->port.func;
+}
+
+DECLARE_USB_FUNCTION_INIT(obex, obex_alloc_inst, obex_alloc);
+
+#endif
+
MODULE_AUTHOR("Felipe Balbi");
MODULE_LICENSE("GPL");
diff --git a/drivers/usb/gadget/nokia.c b/drivers/usb/gadget/nokia.c
index f829a80..eebdd0e0 100644
--- a/drivers/usb/gadget/nokia.c
+++ b/drivers/usb/gadget/nokia.c
@@ -37,7 +37,7 @@
* the runtime footprint, and giving us at least some parts of what
* a "gcc --combine ... part1.c part2.c part3.c ... " build would.
*/
-#include "f_ecm.c"
+#define USBF_OBEX_INCLUDED
#include "f_obex.c"
#include "f_phonet.c"
#include "u_ether.c"
diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index 9d215c4..664da64 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -36,6 +36,7 @@
* the runtime footprint, and giving us at least some parts of what
* a "gcc --combine ... part1.c part2.c part3.c ... " build would.
*/
+#define USBF_OBEX_INCLUDED
#include "f_obex.c"
/*-------------------------------------------------------------------------*/