linux-toradex.git/drivers/usb/gadget/cdc2.c, branch v3.11

usb: gadget: cdc2: convert to new interface of f_ecm

2013-06-10T14:26:56+00:00

f_ecm has been converted to new configfs infrastructure,
fixing cdc2 gadget driver.

[ balbi@ti.com : fixed a bunch of errors when adding ECM function ]

Signed-off-by: Andrzej Pietrasiewicz 
Signed-off-by: Kyungmin Park 
Signed-off-by: Felipe Balbi

usb: gadget: f_ecm: convert to new function interface with backward compatibility

2013-06-10T14:16:02+00:00

Converting ecm to the new function interface requires converting
the USB ecm's function code and its users.

This patch converts the f_ecm.c to the new function interface.

The file is now compiled into a separate usb_f_ecm.ko module.

The old function interface is provided by means of a preprocessor
conditional directives. After all users are converted, the old interface
can be removed.

Signed-off-by: Andrzej Pietrasiewicz 
Signed-off-by: Kyungmin Park 
Signed-off-by: Felipe Balbi

usb: gadget: u_ether: convert into module

2013-06-10T14:10:57+00:00

u_ether.c has been #include'd by all gadgets which implement
USB Ethernet functions. In order to add configfs support,
the f_ecm.c, f_eem.c, f_ncm.c, f_subset.c, f_rndis.c need to be
converted into modules and must not be #include'd. Consequently,
the u_ether.c needs to be a module too, in a manner similar
to u_serial.c. The resulting module should not take any parameters,
so they are pushed to the current users of it, that is ether.c,
g_ffs.c, multi.c, ncm.c, nokia.c.

Signed-off-by: Andrzej Pietrasiewicz 
Signed-off-by: Kyungmin Park 
Signed-off-by: Felipe Balbi

usb: gadget: cdc2: fix error return code in cdc_do_config()

2013-04-23T11:11:51+00:00

Fix to return a negative error code from the error handling
case instead of 0, as returned elsewhere in this function.

Introduced by commit 29a664 (usb: gadget: cdc2: use function
framework for ACM)

Signed-off-by: Wei Yongjun 
Signed-off-by: Felipe Balbi

usb: gadget: push tty port allocation from gadget into f_acm

2013-04-03T11:43:31+00:00

It possible to allocate the tty port number within the "instance"
structure of the function and there is no need to expose this
information within the gadget and therefore it is removed here.
This patch converts only f_acm and all its users. The other gadgets will
follow once the function is converted to the function interface.

Signed-off-by: Sebastian Andrzej Siewior 
Signed-off-by: Felipe Balbi

usb: gadget: move the global the_dev variable to their users

2013-04-03T11:43:31+00:00

the u_ether.c file has a global variable named the_dev which keeps a
pointer to the network device after it has been created via
gether_setup_name(). It is only used internally by u_ether. This patches
moves the variable to its users and passes it via the port.ioport where
it is saved later anyway.

Signed-off-by: Sebastian Andrzej Siewior 
Signed-off-by: Felipe Balbi

usb: gadget: cdc2: use function framework for ACM

2013-01-21T18:52:45+00:00

This patch converts the acm_ms gadget to make use of the function
framework to request the ACM function.

Signed-off-by: Sebastian Andrzej Siewior 
Signed-off-by: Felipe Balbi

usb: gadget: f_acm: convert to new function interface with backwards compatibility

2013-01-21T18:52:43+00:00

This patch converts f_acm into a module which uses the new function
interface. It also converts one of its users that is g_serial to make
use of it. The other users of it (g_nokia for instance) are still using
the old include file system and should not notice the change at all. So
they can be converter later independently.

Signed-off-by: Sebastian Andrzej Siewior 
Signed-off-by: Felipe Balbi

usb: gadget: allocate & giveback serial ports instead hard code them

2013-01-21T18:52:43+00:00

This patch removes gserial_setup() and gserial_cleanup() and adds
gserial_alloc_line() and gserial_free_line() to replace them.

The initial setup of u_serial happens now on module load time. A
maximum of four TTY ports can be requested which is the current limit.
In theory we could extend this limit, the hard limit is the number of
available endpoints.
alloc_tty_driver() is now called at module init time with the max
available ports. The per-line footprint here is on 32bit is 3 * size of
pointer + 60 bytes (for cdevs).
The remaining memory (struct gs_port) is allocated once a port is
requested.

With this change it is possible to load g_multi and g_serial at the same
time. GS0 receives the module that is loaded first, GS1 is received by
the next module and so on. With the configfs interface the port number
can be exported and the device node is more predictable. Nothing changes
for g_serial and friends as long as one module is used.

Signed-off-by: Sebastian Andrzej Siewior 
Signed-off-by: Felipe Balbi

usb: gadget: u_serial: convert into a module

2013-01-21T18:52:42+00:00

Every user of u_serial has now to select the U_SERIAL symbol instead of
including the file.
There is one limition with this: ports and and gs_tty_driver are global
variables in u_serial. Since all users share them, there can be only one
user loaded at a time i.e. either g_serial or g_nokia.

Signed-off-by: Sebastian Andrzej Siewior 
Signed-off-by: Felipe Balbi