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usb: gadget: printer: convert to new interface of f_printer

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The goal is to remove the old function interface, so its (only) user
must be converted to the new interface.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Andrzej Pietrasiewicz 2015-03-03 10:52:29 +01:00 committed by Felipe Balbi
parent b26394bd56
commit 69504f808d
2 changed files with 37 additions and 14 deletions
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1
drivers/usb/gadget/legacy/Kconfig
View File

@ -301,6 +301,7 @@ config USB_MIDI_GADGET
config USB_G_PRINTER
tristate "Printer Gadget"
select USB_LIBCOMPOSITE
select USB_F_PRINTER
help
The Printer Gadget channels data between the USB host and a
userspace program driving the print engine. The user space

50
drivers/usb/gadget/legacy/printer.c
View File

@ -29,12 +29,7 @@ USB_GADGET_COMPOSITE_OPTIONS();
static const char shortname [] = "printer";
static const char driver_desc [] = DRIVER_DESC;
/*
* This will be changed when f_printer is converted
* to the new function interface.
*/
#define USBF_PRINTER_INCLUDED
#include "f_printer.c"
#include "u_printer.h"
/*-------------------------------------------------------------------------*/
@ -65,6 +60,9 @@ module_param(qlen, uint, S_IRUGO|S_IWUSR);
#define QLEN qlen
static struct usb_function_instance *fi_printer;
static struct usb_function *f_printer;
/*-------------------------------------------------------------------------*/
/*
@ -131,6 +129,7 @@ static struct usb_configuration printer_cfg_driver = {
static int __init printer_do_config(struct usb_configuration *c)
{
struct usb_gadget *gadget = c->cdev->gadget;
int status = 0;
usb_ep_autoconfig_reset(gadget);
@ -142,20 +141,41 @@ static int __init printer_do_config(struct usb_configuration *c)
printer_cfg_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
}
return f_printer_bind_config(c, iPNPstring, pnp_string, QLEN, 0);
f_printer = usb_get_function(fi_printer);
if (IS_ERR(f_printer))
return PTR_ERR(f_printer);
status = usb_add_function(c, f_printer);
if (status < 0)
usb_put_function(f_printer);
return status;
}
static int __init printer_bind(struct usb_composite_dev *cdev)
{
int ret;
struct f_printer_opts *opts;
int ret, len;
ret = gprinter_setup(PRINTER_MINORS);
if (ret)
return ret;
fi_printer = usb_get_function_instance("printer");
if (IS_ERR(fi_printer))
return PTR_ERR(fi_printer);
if (iPNPstring)
strlcpy(&pnp_string[2], iPNPstring, PNP_STRING_LEN - 2);
len = strlen(pnp_string);
pnp_string[0] = (len >> 8) & 0xFF;
pnp_string[1] = len & 0xFF;
opts = container_of(fi_printer, struct f_printer_opts, func_inst);
opts->minor = 0;
memcpy(opts->pnp_string, pnp_string, PNP_STRING_LEN);
opts->q_len = QLEN;
ret = usb_string_ids_tab(cdev, strings);
if (ret < 0) {
gprinter_cleanup();
usb_put_function_instance(fi_printer);
return ret;
}
device_desc.iManufacturer = strings[USB_GADGET_MANUFACTURER_IDX].id;
@ -164,7 +184,7 @@ static int __init printer_bind(struct usb_composite_dev *cdev)
ret = usb_add_config(cdev, &printer_cfg_driver, printer_do_config);
if (ret) {
gprinter_cleanup();
usb_put_function_instance(fi_printer);
return ret;
}
usb_composite_overwrite_options(cdev, &coverwrite);
@ -173,7 +193,9 @@ static int __init printer_bind(struct usb_composite_dev *cdev)
static int __exit printer_unbind(struct usb_composite_dev *cdev)
{
gprinter_cleanup();
usb_put_function(f_printer);
usb_put_function_instance(fi_printer);
return 0;
}