diff options
| author | Ajay Kumar Gupta <ajay.gupta@ti.com> | 2009-12-28 13:40:42 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-02 14:53:48 -0800 |
| commit | 5fc4e77911f457b6aa910c704eebe3a58d334116 (patch) | |
| tree | d5ca15301784865d7bb77d5cba1bd1d099994f37 /drivers/usb/musb/musb_core.c | |
| parent | 51bf0d0e6cc1f9679a973f61d07cb48e71f9c992 (diff) | |
usb: musb: Add 'extvbus' in musb_hdrc_platform_data
Some of the board might use external Vbus power supply on musb
interface which would require to program ULPI_BUSCONTROL register.
Adding 'extvbus' flag which can be set from such boards which will
be checked at musb driver files before programming ULPI_BUSCONTROL.
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/musb/musb_core.c')
| -rw-r--r-- | drivers/usb/musb/musb_core.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 4c8962f976b..074d380bf88 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -2031,6 +2031,7 @@ bad_config: /* host side needs more setup */ if (is_host_enabled(musb)) { struct usb_hcd *hcd = musb_to_hcd(musb); + u8 busctl; otg_set_host(musb->xceiv, &hcd->self); @@ -2038,6 +2039,13 @@ bad_config: hcd->self.otg_port = 1; musb->xceiv->host = &hcd->self; hcd->power_budget = 2 * (plat->power ? : 250); + + /* program PHY to use external vBus if required */ + if (plat->extvbus) { + busctl = musb_readb(musb->mregs, MUSB_ULPI_BUSCONTROL); + busctl |= MUSB_ULPI_USE_EXTVBUS; + musb_writeb(musb->mregs, MUSB_ULPI_BUSCONTROL, busctl); + } } /* For the host-only role, we can activate right away. |