usb: gadget: Gadget directory cleanup - group usb functions

The drivers/usb/gadget directory contains many files.
Files which are related can be distributed into separate directories.
This patch moves the USB functions implementations into a separate directory.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

46 files changed, 28686 insertions, 0 deletions

diff --git a/drivers/usb/gadget/function/Makefile b/drivers/usb/gadget/function/Makefile
new file mode 100644
index 000000000000..6d91f21b52a6
--- /dev/null
+++ b/drivers/usb/gadget/function/Makefile
@@ -0,0 +1,34 @@
+#
+# USB peripheral controller drivers
+#
+
+ccflags-y                       := -I$(PWD)/drivers/usb/gadget/
+ccflags-y                       += -I$(PWD)/drivers/usb/gadget/udc/
+
+# USB Functions
+usb_f_acm-y                     := f_acm.o
+obj-$(CONFIG_USB_F_ACM)         += usb_f_acm.o
+usb_f_ss_lb-y                   := f_loopback.o f_sourcesink.o
+obj-$(CONFIG_USB_F_SS_LB)       += usb_f_ss_lb.o
+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-$(CONFIG_USB_F_OBEX)        += usb_f_obex.o
+obj-$(CONFIG_USB_U_ETHER)       += u_ether.o
+usb_f_ncm-y                     := f_ncm.o
+obj-$(CONFIG_USB_F_NCM)         += usb_f_ncm.o
+usb_f_ecm-y                     := f_ecm.o
+obj-$(CONFIG_USB_F_ECM)         += usb_f_ecm.o
+usb_f_phonet-y                  := f_phonet.o
+obj-$(CONFIG_USB_F_PHONET)      += usb_f_phonet.o
+usb_f_eem-y                     := f_eem.o
+obj-$(CONFIG_USB_F_EEM)         += usb_f_eem.o
+usb_f_ecm_subset-y              := f_subset.o
+obj-$(CONFIG_USB_F_SUBSET)      += usb_f_ecm_subset.o
+usb_f_rndis-y                   := f_rndis.o rndis.o
+obj-$(CONFIG_USB_F_RNDIS)       += usb_f_rndis.o
+usb_f_mass_storage-y            := f_mass_storage.o storage_common.o
+obj-$(CONFIG_USB_F_MASS_STORAGE)+= usb_f_mass_storage.o
+usb_f_fs-y                      := f_fs.o
+obj-$(CONFIG_USB_F_FS)          += usb_f_fs.o
diff --git a/drivers/usb/gadget/function/f_acm.c b/drivers/usb/gadget/function/f_acm.c
new file mode 100644
index 000000000000..ab1065afbbd0
--- /dev/null
+++ b/drivers/usb/gadget/function/f_acm.c
@@ -0,0 +1,848 @@
+/*
+ * f_acm.c -- USB CDC serial (ACM) function driver
+ *
+ * Copyright (C) 2003 Al Borchers (alborchers@steinerpoint.com)
+ * Copyright (C) 2008 by David Brownell
+ * Copyright (C) 2008 by Nokia Corporation
+ * Copyright (C) 2009 by Samsung Electronics
+ * Author: Michal Nazarewicz (mina86@mina86.com)
+ *
+ * This software is distributed under the terms of the GNU General
+ * Public License ("GPL") as published by the Free Software Foundation,
+ * either version 2 of that License or (at your option) any later version.
+ */
+
+/* #define VERBOSE_DEBUG */
+
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/err.h>
+
+#include "u_serial.h"
+#include "gadget_chips.h"
+
+
+/*
+ * This CDC ACM function support just wraps control functions and
+ * notifications around the generic serial-over-usb code.
+ *
+ * Because CDC ACM is standardized by the USB-IF, many host operating
+ * systems have drivers for it.  Accordingly, ACM is the preferred
+ * interop solution for serial-port type connections.  The control
+ * models are often not necessary, and in any case don't do much in
+ * this bare-bones implementation.
+ *
+ * Note that even MS-Windows has some support for ACM.  However, that
+ * support is somewhat broken because when you use ACM in a composite
+ * device, having multiple interfaces confuses the poor OS.  It doesn't
+ * seem to understand CDC Union descriptors.  The new "association"
+ * descriptors (roughly equivalent to CDC Unions) may sometimes help.
+ */
+
+struct f_acm {
+        struct gserial                  port;
+        u8                              ctrl_id, data_id;
+        u8                              port_num;
+
+        u8                              pending;
+
+        /* lock is mostly for pending and notify_req ... they get accessed
+         * by callbacks both from tty (open/close/break) under its spinlock,
+         * and notify_req.complete() which can't use that lock.
+         */
+        spinlock_t                      lock;
+
+        struct usb_ep                   *notify;
+        struct usb_request              *notify_req;
+
+        struct usb_cdc_line_coding      port_line_coding;       /* 8-N-1 etc */
+
+        /* SetControlLineState request -- CDC 1.1 section 6.2.14 (INPUT) */
+        u16                             port_handshake_bits;
+#define ACM_CTRL_RTS    (1 << 1)        /* unused with full duplex */
+#define ACM_CTRL_DTR    (1 << 0)        /* host is ready for data r/w */
+
+        /* SerialState notification -- CDC 1.1 section 6.3.5 (OUTPUT) */
+        u16                             serial_state;
+#define ACM_CTRL_OVERRUN        (1 << 6)
+#define ACM_CTRL_PARITY         (1 << 5)
+#define ACM_CTRL_FRAMING        (1 << 4)
+#define ACM_CTRL_RI             (1 << 3)
+#define ACM_CTRL_BRK            (1 << 2)
+#define ACM_CTRL_DSR            (1 << 1)
+#define ACM_CTRL_DCD            (1 << 0)
+};
+
+static inline struct f_acm *func_to_acm(struct usb_function *f)
+{
+        return container_of(f, struct f_acm, port.func);
+}
+
+static inline struct f_acm *port_to_acm(struct gserial *p)
+{
+        return container_of(p, struct f_acm, port);
+}
+
+/*-------------------------------------------------------------------------*/
+