diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2015-06-17 21:33:54 +0200 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-07-21 17:39:37 -0600 |
| commit | 15837236386191f2a26706b5ee56cdb4ab28e6d5 (patch) | |
| tree | dd84bb180cbecfe09bbab7bd1950ba7d87485a1b /drivers/usb/musb-new/musb_uboot.c | |
| parent | fd1bd21bf07d0770bff7b477d501b706dac9987d (diff) | |
| download | talos-obmc-uboot-15837236386191f2a26706b5ee56cdb4ab28e6d5.tar.gz talos-obmc-uboot-15837236386191f2a26706b5ee56cdb4ab28e6d5.zip | |
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>
Diffstat (limited to 'drivers/usb/musb-new/musb_uboot.c')
| -rw-r--r-- | drivers/usb/musb-new/musb_uboot.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/usb/musb-new/musb_uboot.c b/drivers/usb/musb-new/musb_uboot.c index 1bf676c589..70e87c9f0d 100644 --- a/drivers/usb/musb-new/musb_uboot.c +++ b/drivers/usb/musb-new/musb_uboot.c @@ -217,13 +217,17 @@ int usb_lowlevel_init(int index, enum usb_init_type init, void **controller) void *mbase; /* USB spec says it may take up to 1 second for a device to connect */ unsigned long timeout = get_timer(0) + 1000; + int ret; if (!host) { printf("MUSB host is not registered\n"); return -ENODEV; } - musb_start(host); + ret = musb_start(host); + if (ret) + return ret; + mbase = host->mregs; do { if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM) |
