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dm: usb: Split out the keyboard probe into its own function

Browse source 
Before adding driver model support, split out code from this over-long
function.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Simon Glass 2015-03-25 12:22:33 -06:00
parent fbeceb2602
commit 603afaf0e5
1 changed files with 51 additions and 38 deletions
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89
common/usb_kbd.c
View file

@ -471,59 +471,72 @@ static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum)
return 1;
}
static int probe_usb_keyboard(struct usb_device *dev)
{
char *stdinname;
struct stdio_dev usb_kbd_dev;
int error;
/* Try probing the keyboard */
if (usb_kbd_probe(dev, 0) != 1)
return -ENOENT;
/* Register the keyboard */
debug("USB KBD: register.\n");
memset(&usb_kbd_dev, 0, sizeof(struct stdio_dev));
strcpy(usb_kbd_dev.name, DEVNAME);
usb_kbd_dev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
usb_kbd_dev.getc = usb_kbd_getc;
usb_kbd_dev.tstc = usb_kbd_testc;
usb_kbd_dev.priv = (void *)dev;
error = stdio_register(&usb_kbd_dev);
if (error)
return error;
stdinname = getenv("stdin");
#ifdef CONFIG_CONSOLE_MUX
error = iomux_doenv(stdin, stdinname);
if (error)
return error;
#else
/* Check if this is the standard input device. */
if (strcmp(stdinname, DEVNAME))
return 1;
/* Reassign the console */
if (overwrite_console())
return 1;
error = console_assign(stdin, DEVNAME);
if (error)
return error;
#endif
return 0;
}
/* Search for keyboard and register it if found. */
int drv_usb_kbd_init(void)
{
struct stdio_dev usb_kbd_dev;
struct usb_device *dev;
char *stdinname = getenv("stdin");
int error, i;
/* Scan all USB Devices */
debug("%s: Probing for keyboard\n", __func__);/* Scan all USB Devices */
for (i = 0; i < USB_MAX_DEVICE; i++) {
struct usb_device *dev;
/* Get USB device. */
dev = usb_get_dev_index(i);
if (!dev)
return -1;
break;
if (dev->devnum == -1)
continue;
/* Try probing the keyboard */
if (usb_kbd_probe(dev, 0) != 1)
continue;
/* Register the keyboard */
debug("USB KBD: register.\n");
memset(&usb_kbd_dev, 0, sizeof(struct stdio_dev));
strcpy(usb_kbd_dev.name, DEVNAME);
usb_kbd_dev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
usb_kbd_dev.getc = usb_kbd_getc;
usb_kbd_dev.tstc = usb_kbd_testc;
usb_kbd_dev.priv = (void *)dev;
error = stdio_register(&usb_kbd_dev);
if (error)
return error;
#ifdef CONFIG_CONSOLE_MUX
error = iomux_doenv(stdin, stdinname);
if (error)
return error;
#else
/* Check if this is the standard input device. */
if (strcmp(stdinname, DEVNAME))
error = probe_usb_keyboard(dev);
if (!error)
return 1;
/* Reassign the console */
if (overwrite_console())
return 1;
error = console_assign(stdin, DEVNAME);
if (error)
if (error && error != -ENOENT)
return error;
#endif
return 1;
}
/* No USB Keyboard found */