From: Tony Lindgren <tony@xxxxxxxxxxx>
Now that we've removed direct calls from interrupt handler to
omap2430_musb_set_vbus(), let's make things less confusing and
configure VBUS directly in omap_musb_set_mailbox().
We have omap_musb_set_mailbox() called from the PHYs, and that's
all we need.
Note that we can now also drop the check for MUSB_INTERFACE_UTMI,
we've been already calling otg_set_vbus(musb->xceiv->otg, 0)
unconditionally via omap2430_musb_set_vbus() and we should only
need to call it once.
And we want to disable VBUS unconditionally on disconnect even
without musb->gadget_driver, so let's drop that check too.
Acked-by: Pavel Machek <pavel@xxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
Signed-off-by: Bin Liu <b-liu@xxxxxx>
---
drivers/usb/musb/omap2430.c | 71 ++++++++++++-------------------------
1 file changed, 23 insertions(+), 48 deletions(-)
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index bc5810e14ebb..d62c78b97cad 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -38,42 +38,6 @@ struct omap2430_glue {
static struct omap2430_glue *_glue;
-/*
- * HDRC controls CPEN, but beware current surges during device connect.
- * They can trigger transient overcurrent conditions that must be ignored.
- *
- * Note that we're skipping A_WAIT_VFALL -> A_IDLE and jumping right to B_IDLE
- * as set by musb_set_peripheral().
- */
-static void omap2430_musb_set_vbus(struct musb *musb, int is_on)
-{
- struct usb_otg *otg = musb->xceiv->otg;
- int error;
-
- if (is_on) {
- switch (musb->xceiv->otg->state) {
- case OTG_STATE_A_IDLE:
- error = musb_set_host(musb);
- if (!error) {
- musb->xceiv->otg->state =
- OTG_STATE_A_WAIT_VRISE;
- otg_set_vbus(otg, 1);
- }
- break;
- default:
- otg_set_vbus(otg, 1);
- break;
- }
- } else {
- error = musb_set_peripheral(musb);
- otg_set_vbus(otg, 0);
- }
-
- dev_dbg(musb->controller, "VBUS %s, devctl %02x\n",
- usb_otg_state_string(musb->xceiv->otg->state),
- musb_readb(musb->mregs, MUSB_DEVCTL));
-}
-
static inline void omap2430_low_level_exit(struct musb *musb)
{
u32 l;
@@ -113,27 +77,42 @@ static int omap2430_musb_mailbox(enum musb_vbus_id_status status)
return 0;
}
+/*
+ * HDRC controls CPEN, but beware current surges during device connect.
+ * They can trigger transient overcurrent conditions that must be ignored.
+ *
+ * Note that we're skipping A_WAIT_VFALL -> A_IDLE and jumping right to B_IDLE
+ * as set by musb_set_peripheral().
+ */
static void omap_musb_set_mailbox(struct omap2430_glue *glue)
{
struct musb *musb = glue_to_musb(glue);
- struct musb_hdrc_platform_data *pdata =
- dev_get_platdata(musb->controller);
- struct omap_musb_board_data *data = pdata->board_data;
+ int error;
pm_runtime_get_sync(musb->controller);
+
+ dev_dbg(musb->controller, "VBUS %s, devctl %02x\n",
+ usb_otg_state_string(musb->xceiv->otg->state),
+ musb_readb(musb->mregs, MUSB_DEVCTL));
+
switch (glue->status) {
case MUSB_ID_GROUND:
dev_dbg(musb->controller, "ID GND\n");
switch (musb->xceiv->otg->state) {
+ case OTG_STATE_A_IDLE:
+ error = musb_set_host(musb);
+ if (error)
+ break;
+ musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
+ /* Fall through */
case OTG_STATE_A_WAIT_VRISE:
case OTG_STATE_A_WAIT_BCON:
case OTG_STATE_A_HOST:
- case OTG_STATE_A_IDLE:
/*
* On multiple ID ground interrupts just keep enabling
* VBUS. At least cpcap VBUS shuts down otherwise.
*/
- omap2430_musb_set_vbus(musb, 1);
+ otg_set_vbus(musb->xceiv->otg, 1);
break;
default:
musb->xceiv->otg->state = OTG_STATE_A_IDLE;
@@ -141,7 +120,7 @@ static void omap_musb_set_mailbox(struct omap2430_glue *glue)
if (musb->gadget_driver) {
omap_control_usb_set_mode(glue->control_otghs,
USB_MODE_HOST);
- omap2430_musb_set_vbus(musb, 1);
+ otg_set_vbus(musb->xceiv->otg, 1);
}
break;
}
@@ -160,12 +139,8 @@ static void omap_musb_set_mailbox(struct omap2430_glue *glue)
dev_dbg(musb->controller, "VBUS Disconnect\n");
musb->xceiv->last_event = USB_EVENT_NONE;
- if (musb->gadget_driver)
- omap2430_musb_set_vbus(musb, 0);
-
- if (data->interface_type == MUSB_INTERFACE_UTMI)
- otg_set_vbus(musb->xceiv->otg, 0);
-
+ musb_set_peripheral(musb);
+ otg_set_vbus(musb->xceiv->otg, 0);
omap_control_usb_set_mode(glue->control_otghs,
USB_MODE_DISCONNECT);
break;
--
2.17.1
