musb: Allow musb_platform_enable to return an error code
Allow musb_platform_enable to return an error code and propagate it up to
usb_lowlevel_init().
This allows moving the checks for an external vbus being present to be
moved from platform_init to platform_enable, so that the user can unplug a
charger, plug in a host adapter with a usb-device, do a "usb reset" and
have things working.
This also allows adding a check for the id-pin to platform_enable, so that
it can short circuit the 1s delay in usb_lowlevel_init() when no host cable
is plugged in and thus waiting for a device to show up is useless.
Note that all the changes to code shared with the kernel are wrapped in
the kernel.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/usb/musb-new/musb_dsps.c b/drivers/usb/musb-new/musb_dsps.c
index 17ed224..8959397 100644
--- a/drivers/usb/musb-new/musb_dsps.c
+++ b/drivers/usb/musb-new/musb_dsps.c
@@ -156,7 +156,11 @@
/**
* dsps_musb_enable - enable interrupts
*/
+#ifndef __UBOOT__
static void dsps_musb_enable(struct musb *musb)
+#else
+static int dsps_musb_enable(struct musb *musb)
+#endif
{
#ifndef __UBOOT__
struct device *dev = musb->controller;
@@ -181,6 +185,8 @@
if (is_otg_enabled(musb))
dsps_writel(reg_base, wrp->coreintr_set,
(1 << wrp->drvvbus) << wrp->usb_shift);
+#else
+ return 0;
#endif
}