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path: root/drivers/usb/gadget/dbgp.c
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2013-01-21usb: gadget: allocate & giveback serial ports instead hard code themSebastian Andrzej Siewior
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 <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
2013-01-21usb: gadget: u_serial: convert into a moduleSebastian Andrzej Siewior
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 <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-09-10usb: gadget: libcomposite: add epautoconf.c to libcompositeSebastian Andrzej Siewior
This patch adds epautoconf.c into libcomposite and updates all gadgets. Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-09-10usb: gadget: remove global variable composite in composite.cSebastian Andrzej Siewior
This patch removes the global variable composite in composite.c. The private data which was saved there is now passed via an additional argument to the bind() function in struct usb_gadget_driver. Only the "old-style" UDC drivers have to be touched here, new style are doing it right because this change is made in udc-core. Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-09-10usb: gadget: move bind() callback back to struct usb_gadget_driverSebastian Andrzej Siewior
This partly reverts 07a18bd7 ("usb gadget: don't save bind callback in struct usb_composite_driver") and fixes new drivers. The section missmatch problems was solved by whitelisting bind callback in modpost. Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-09-10usb: gadget: push all usb_composite_driver structs into __refdataSebastian Andrzej Siewior
As it turns out, Sam's comment was better than I initially assumed. This patch pushes as struct usb_composite_driver data structures into __refdata section to avoid a section missmatch report from modpost because the ->bind() can be marked __init. The only downside is that modpost does not check between ->bind() and other member. However, it is temporary. Cc: Sam Ravnborg <sam@ravnborg.org> Acked-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-12-12usb: gadget: rename usb_gadget_driver::speed to max_speedMichal Nazarewicz
This commit renames the “speed” field of the usb_gadget_driver structure to “max_speed”. This is so that to make it more apparent that the field represents the maximum speed gadget driver can support. This also make the field look more like fields with the same name in usb_gadget and usb_composite_driver structures. All of those represent the *maximal* speed given entity supports. After this commit, there are the following fields in various structures: * usb_gadget::speed - the current connection speed, * usb_gadget::max_speed - maximal speed UDC supports, * usb_gadget_driver::max_speed - maximal speed gadget driver supports, and * usb_composite_driver::max_speed - maximal speed composite gadget supports. Signed-off-by: Michal Nazarewicz <mina86@mina86.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-10-31usb: Add module.h to drivers/usb consumers who really use it.Paul Gortmaker
The situation up to this point meant that module.h was pretty much everywhere, regardless of whether you asked for it or not. We are fixing that, so give the USB folks who want it an actual include of it. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-09-09usb gadget: clean up FSF boilerplate textKlaus Schwarzkopf
remove the following two paragraphs as they are not needed: This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc.,59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Signed-off-by: Klaus Schwarzkopf <schwarzkopf@sensortherm.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-07-01usb: gadget: defer setting maxpacket till ->setup()Sebastian Andrzej Siewior
maxpacket is set by the udc driver for ep0 very early. This value is copied by the function gadget used later for the USB_DT_DEVICE and USB_DT_DEVICE_QUALIFIER query. This seems to work fine so far. For USB3 we need set a different value here. In SS speed it is 2^x with x=9 and in HS we set something <= 64. If the UDC starts in SS and continues in HS after the cable has been plugged it will report a too small value. There setting of this value is defered and taken automaticly from the ep0 pointer where the UDC driver can update it according to the speed it detected _after_ a cable has been plugged. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-06-28usb: gadget: add usb_endpoint_descriptor to struct usb_epTatyana Brokhman
Change usb_ep_enable() prototype to use endpoint descriptor from usb_ep. This optimization spares the FDs from saving the endpoint chosen descriptor. This optimization is not full though. To fully exploit this change, one needs to update all the UDCs as well since in the current implementation each of them saves the endpoint descriptor in it's internal (and extended) endpoint structure. Signed-off-by: Tatyana Brokhman <tlinder@codeaurora.org> Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29USB: dbpg gadget: dont mask out direction bitSven Schnelle
Stripping the direction bit off will produce an invalid descriptor. Signed-off-by: Sven Schnelle <svens@stackframe.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29USB: dbgp gadget: set MaxpacketSize0Sven Schnelle
The current code doesn't set it, so linux complains about it when connected, and ignores the device: [104611.068082] usb 1-5: new high speed USB device using ehci_hcd and address 127 [104611.088368] usb 1-5: Invalid ep0 maxpacket: 0 Signed-off-by: Sven Schnelle <svens@stackframe.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-29USB: dbgp gadget: fix return value of dbgp_setupSven Schnelle
Current code returns 0 even if it can't handle the request. This leads to timeouts when an unhandled request is sent: Bus 001 Device 003: ID 0525:c0de Netchip Technology, Inc. Device Descriptor: [..] can't get device qualifier: Connection timed out [..] change the code to return EOPNOTSUPP in such cases. Signed-off-by: Sven Schnelle <svens@stackframe.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-10-22usb gadget: don't save bind callback in struct usb_gadget_driverUwe Kleine-König
To accomplish this the function to register a gadget driver takes the bind function as a second argument. To make things clearer rename the function to resemble platform_driver_probe. This fixes many section mismatches like WARNING: drivers/usb/gadget/g_printer.o(.data+0xc): Section mismatch in reference from the variable printer_driver to the function .init.text:printer_bind() The variable printer_driver references the function __init printer_bind() All callers are fixed. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> [m.nazarewicz@samsung.com: added dbgp] Signed-off-by: Michał Nazarewicz <m.nazarewicz@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-10-22USB: gadget: dbgp: cleanup: remove unneeded checkDan Carpenter
len is always greater than or equal to zero here. First of all, it's type is unsigned and also we only assign it numbers which are greater than or equal to zero. Removing the check lets us pull everything in an indent level. Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Stephane duverger <stephane.duverger@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10USB: EHCI Debug Port Device Gadgetstephane duverger
This is a patch that implements an USB EHCI Debug Device using the Gadget API. This patch applies to a 2.6.35-rc3 kernel. The gadget needs a compliant usb controller that forwards the USB_DEVICE_DEBUG_MODE feature to its gadget. The gadget provides two configuration modes, one that only printk() the received data, and one that exposes a serial device to userland (/dev/ttyGSxxx). The gadget has been tested on an IGEPv2 board running a 2.6.35-rc1 kernel. The debug port was fed on the host side by a 2.6.34 kernel. Signed-off-by: Stephane Duverger <stephane.duverger@gmail.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>