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dm: usb: Add support for USB keyboards with driver model

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Switch USB keyboards over to use driver model instead of scanning with the
horrible usb_get_dev_index() function. This involves creating a new uclass
for keyboards, although so far there is no API.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2015-09-08 11:15:11 -06:00
parent 2b24e09c66
commit 34ab37eef5
3 changed files with 57 additions and 8 deletions
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52
common/usb_kbd.c
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@@ -399,7 +399,7 @@ static int usb_kbd_getc(struct stdio_dev *sdev)
}
/* probes the USB device dev for keyboard type. */
static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum)
static int usb_kbd_probe_dev(struct usb_device *dev, unsigned int ifnum)
{
struct usb_interface *iface;
struct usb_endpoint_descriptor *ep;
@@ -496,7 +496,7 @@ static int probe_usb_keyboard(struct usb_device *dev)
int error;
/* Try probing the keyboard */
if (usb_kbd_probe(dev, 0) != 1)
if (usb_kbd_probe_dev(dev, 0) != 1)
return -ENOENT;
/* Register the keyboard */
@@ -533,6 +533,7 @@ static int probe_usb_keyboard(struct usb_device *dev)
return 0;
}
#ifndef CONFIG_DM_USB
/* Search for keyboard and register it if found. */
int drv_usb_kbd_init(void)
{
@@ -591,6 +592,7 @@ int drv_usb_kbd_init(void)
/* No USB Keyboard found */
return -1;
}
#endif
/* Deregister the keyboard. */
int usb_kbd_deregister(int force)
@@ -622,3 +624,49 @@ int usb_kbd_deregister(int force)
return 1;
#endif
}
#ifdef CONFIG_DM_USB
static int usb_kbd_probe(struct udevice *dev)
{
struct usb_device *udev = dev_get_parent_priv(dev);
int ret;
ret = probe_usb_keyboard(udev);
return ret;
}
static const struct udevice_id usb_kbd_ids[] = {
{ .compatible = "usb-keyboard" },
{ }
};
U_BOOT_DRIVER(usb_kbd) = {
.name = "usb_kbd",
.id = UCLASS_KEYBOARD,
.of_match = usb_kbd_ids,
.probe = usb_kbd_probe,
};
/* TODO(sjg@chromium.org): Move this into a common location */
UCLASS_DRIVER(keyboard) = {
.id = UCLASS_KEYBOARD,
.name = "keyboard",
};
static const struct usb_device_id kbd_id_table[] = {
{
.match_flags = USB_DEVICE_ID_MATCH_INT_CLASS |
USB_DEVICE_ID_MATCH_INT_SUBCLASS |
USB_DEVICE_ID_MATCH_INT_PROTOCOL,
.bInterfaceClass = USB_CLASS_HID,
.bInterfaceSubClass = 1,
.bInterfaceProtocol = 1,
},
{ } /* Terminating entry */
};
U_BOOT_USB_DEVICE(usb_kbd, kbd_id_table);
#endif