This patch re-introduces the bits that are necessary to use the musb
controller in host mode.
Signed-off-by: Daniel Mack <zonque@xxxxxxxxx>
---
drivers/usb/musb/musb_core.c | 5 +++++
drivers/usb/musb/musb_host.c | 21 +++++++++++++++++++++
drivers/usb/musb/musb_host.h | 8 ++++++++
3 files changed, 34 insertions(+)
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index f3519d3..fbcf5cb 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -961,6 +961,7 @@ static void musb_shutdown(struct platform_device *pdev)
pm_runtime_get_sync(musb->controller);
+ musb_host_cleanup(musb);
musb_gadget_cleanup(musb);
spin_lock_irqsave(&musb->lock, flags);
@@ -1910,6 +1911,10 @@ 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);
if (status < 0)
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 38834b2..b6a840e 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -2648,6 +2648,27 @@ void musb_host_free(struct musb *musb)
usb_put_hcd(musb->hcd);
}
+int musb_host_setup(struct musb *musb, int power_budget)
+{
+ int ret;
+ struct usb_hcd *hcd = musb->hcd;
+
+ MUSB_HST_MODE(musb);
+ musb->xceiv->otg->default_a = 1;
+ musb->xceiv->state = OTG_STATE_A_IDLE;
+
+ otg_set_host(musb->xceiv->otg, &hcd->self);
+ hcd->self.otg_port = 1;
+ musb->xceiv->otg->host = &hcd->self;
+ hcd->power_budget = 2 * (power_budget ? : 250);
+
+ ret = usb_add_hcd(hcd, 0, 0);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
void musb_host_resume_root_hub(struct musb *musb)
{
usb_hcd_resume_root_hub(musb->hcd);
diff --git a/drivers/usb/musb/musb_host.h b/drivers/usb/musb/musb_host.h
index 1ce6e4e..48a4bdd 100644
--- a/drivers/usb/musb/musb_host.h
+++ b/drivers/usb/musb/musb_host.h
@@ -81,6 +81,8 @@ static inline struct musb_qh *first_qh(struct list_head *q)
extern struct musb *hcd_to_musb(struct usb_hcd *);
extern irqreturn_t musb_h_ep0_irq(struct musb *);
extern int musb_host_alloc(struct musb *);
+extern int musb_host_setup(struct musb *, int);
+extern void musb_host_cleanup(struct musb *);
extern void musb_host_tx(struct musb *, u8);
extern void musb_host_rx(struct musb *, u8);
extern void musb_root_disconnect(struct musb *musb);
@@ -107,6 +109,12 @@ static inline int musb_host_alloc(struct musb *musb)
return 0;
}
+static inline int musb_host_setup(struct musb *musb, int power_budget)
+{
+ return 0;
+}
+
+static inline void musb_host_cleanup(struct musb *musb) {}
static inline void musb_host_free(struct musb *musb) {}
static inline void musb_host_tx(struct musb *musb, u8 epnum) {}
static inline void musb_host_rx(struct musb *musb, u8 epnum) {}
--
1.8.1.4
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