diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2012-12-23 20:10:08 (GMT) |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-01-21 18:52:44 (GMT) |
| commit | 5f72bbfd9f427565c85e71a63d47b3448e79a466 (patch) | |
| tree | a870acabe3e7427a71fa8e338f78915578a73427 /drivers/usb/gadget | |
| parent | ff47f59467388104d369a441aa6996d257343775 (diff) | |
| download | linux-5f72bbfd9f427565c85e71a63d47b3448e79a466.tar.xz | |
usb: gadget: acm_ms: use function framework for ACM
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 <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/usb/gadget/acm_ms.c | 33 |
2 files changed, 28 insertions, 6 deletions
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index b61c72f..8dad2ce 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -844,6 +844,7 @@ config USB_G_ACM_MS depends on BLOCK select USB_LIBCOMPOSITE select USB_U_SERIAL + select USB_F_ACM help This driver provides two functions in one configuration: a mass storage, and a CDC ACM (serial port) link. diff --git a/drivers/usb/gadget/acm_ms.c b/drivers/usb/gadget/acm_ms.c index 4105a06..8f2b0e3 100644 --- a/drivers/usb/gadget/acm_ms.c +++ b/drivers/usb/gadget/acm_ms.c @@ -40,8 +40,6 @@ * the runtime footprint, and giving us at least some parts of what * a "gcc --combine ... part1.c part2.c part3.c ... " build would. */ -#define USB_FACM_INCLUDED -#include "f_acm.c" #include "f_mass_storage.c" /*-------------------------------------------------------------------------*/ @@ -112,12 +110,14 @@ static struct fsg_common fsg_common; /*-------------------------------------------------------------------------*/ static unsigned char tty_line; - +static struct usb_function *f_acm; +static struct usb_function_instance *f_acm_inst; /* * We _always_ have both ACM and mass storage functions. */ static int __init acm_ms_do_config(struct usb_configuration *c) { + struct f_serial_opts *opts; int status; if (gadget_is_otg(c->cdev->gadget)) { @@ -125,16 +125,35 @@ static int __init acm_ms_do_config(struct usb_configuration *c) c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } + f_acm_inst = usb_get_function_instance("acm"); + if (IS_ERR(f_acm_inst)) + return PTR_ERR(f_acm_inst); + + opts = container_of(f_acm_inst, struct f_serial_opts, func_inst); + opts->port_num = tty_line; + + f_acm = usb_get_function(f_acm_inst); + if (IS_ERR(f_acm)) { + status = PTR_ERR(f_acm); + goto err_func; + } - status = acm_bind_config(c, tty_line); + status = usb_add_function(c, f_acm); if (status < 0) - return status; + goto err_conf; status = fsg_bind_config(c->cdev, c, &fsg_common); if (status < 0) - return status; + goto err_fsg; return 0; +err_fsg: + usb_remove_function(c, f_acm); +err_conf: + usb_put_function(f_acm); +err_func: + usb_put_function_instance(f_acm_inst); + return status; } static struct usb_configuration acm_ms_config_driver = { @@ -195,6 +214,8 @@ fail0: static int __exit acm_ms_unbind(struct usb_composite_dev *cdev) { + usb_put_function(f_acm); + usb_put_function_instance(f_acm_inst); gserial_free_line(tty_line); return 0; } |