Initialize the host and gagdet subsystems of the musb driver only when
the appropriate mode is selected from platform data, or device-tree
information, respectively.
Signed-off-by: Daniel Mack <zon...@gmail.com>
---
drivers/usb/musb/musb_core.c | 22 +++++++++++++++++-----
drivers/usb/musb/musb_virthub.c | 3 ++-
2 files changed, 19 insertions(+), 6 deletions(-)
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 2640d25..b3b9873 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -1912,11 +1912,23 @@ musb_init_controller(struct device *dev, int nIrq, void
__iomem *ctrl)
musb->xceiv->state = OTG_STATE_B_IDLE;
}
- status = musb_host_setup(musb, plat->power);
- if (status < 0)
- goto fail3;
-
- status = musb_gadget_setup(musb);
+ switch (musb->port_mode) {
+ case MUSB_PORT_MODE_HOST:
+ status = musb_host_setup(musb, plat->power);
+ break;
+ case MUSB_PORT_MODE_GADGET:
+ status = musb_gadget_setup(musb);
+ break;
+ case MUSB_PORT_MODE_DUAL_ROLE:
+ status = musb_host_setup(musb, plat->power);
+ if (status < 0)
+ goto fail3;
+ status = musb_gadget_setup(musb);
+ break;
+ default:
+ dev_err(dev, "unsupported port mode %d\n", musb->port_mode);
+ break;
+ }
if (status < 0)
goto fail3;
diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c
index 1e17c20..8d92ba2 100644
--- a/drivers/usb/musb/musb_virthub.c
+++ b/drivers/usb/musb/musb_virthub.c
@@ -79,7 +79,8 @@ static void musb_start(struct musb *musb)
* (b) vbus present/connect IRQ, peripheral mode;
* (c) peripheral initiates, using SRP
*/
- if ((devctl & MUSB_DEVCTL_VBUS) == MUSB_DEVCTL_VBUS) {
+ if (musb->port_mode != MUSB_PORT_MODE_HOST &&
+ (devctl & MUSB_DEVCTL_VBUS) == MUSB_DEVCTL_VBUS) {
musb->is_active = 1;
} else {
devctl |= MUSB_DEVCTL_SESSION;
--
1.8.1.4
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