usb: musb: Add and use inline functions musb_{get,set}_state

Instead of manipulating musb->xceiv->otg->state directly, use the newly
introduced musb_get_state() and musb_set_state() inline functions.

Later, these inline functions will be modified to get rid of the
musb->xceiv dependency, which prevents the musb code from using the
generic PHY subsystem.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20221026182657.146630-2-paul@crapouillou.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 14 insertions, 14 deletions

diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index 6704a62a1665..b5c7deb288d2 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -1523,7 +1523,7 @@ static int musb_gadget_wakeup(struct usb_gadget *gadget)
 
 	spin_lock_irqsave(&musb->lock, flags);
 
-	switch (musb->xceiv->otg->state) {
+	switch (musb_get_state(musb)) {
 	case OTG_STATE_B_PERIPHERAL:
 		/* NOTE:  OTG state machine doesn't include B_SUSPENDED;
 		 * that's part of the standard usb 1.1 state machine, and
@@ -1787,7 +1787,7 @@ int musb_gadget_setup(struct musb *musb)
 	musb->g.speed = USB_SPEED_UNKNOWN;
 
 	MUSB_DEV_MODE(musb);
-	musb->xceiv->otg->state = OTG_STATE_B_IDLE;
+	musb_set_state(musb, OTG_STATE_B_IDLE);
 
 	/* this "gadget" abstracts/virtualizes the controller */
 	musb->g.name = musb_driver_name;
@@ -1852,7 +1852,7 @@ static int musb_gadget_start(struct usb_gadget *g,
 	musb->is_active = 1;
 
 	otg_set_peripheral(otg, &musb->g);
-	musb->xceiv->otg->state = OTG_STATE_B_IDLE;
+	musb_set_state(musb, OTG_STATE_B_IDLE);
 	spin_unlock_irqrestore(&musb->lock, flags);
 
 	musb_start(musb);
@@ -1897,7 +1897,7 @@ static int musb_gadget_stop(struct usb_gadget *g)
 
 	(void) musb_gadget_vbus_draw(&musb->g, 0);
 
-	musb->xceiv->otg->state = OTG_STATE_UNDEFINED;
+	musb_set_state(musb, OTG_STATE_UNDEFINED);
 	musb_stop(musb);
 	otg_set_peripheral(musb->xceiv->otg, NULL);
 
@@ -1926,7 +1926,7 @@ static int musb_gadget_stop(struct usb_gadget *g)
 void musb_g_resume(struct musb *musb)
 {
 	musb->is_suspended = 0;
-	switch (musb->xceiv->otg->state) {
+	switch (musb_get_state(musb)) {
 	case OTG_STATE_B_IDLE:
 		break;
 	case OTG_STATE_B_WAIT_ACON:
@@ -1952,10 +1952,10 @@ void musb_g_suspend(struct musb *musb)
 	devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
 	musb_dbg(musb, "musb_g_suspend: devctl %02x", devctl);
 
-	switch (musb->xceiv->otg->state) {
+	switch (musb_get_state(musb)) {
 	case OTG_STATE_B_IDLE:
 		if ((devctl & MUSB_DEVCTL_VBUS) == MUSB_DEVCTL_VBUS)
-			musb->xceiv->otg->state = OTG_STATE_B_PERIPHERAL;
+			musb_set_state(musb, OTG_STATE_B_PERIPHERAL);
 		break;
 	case OTG_STATE_B_PERIPHERAL:
 		musb->is_suspended = 1;
@@ -2001,22 +2001,22 @@ void musb_g_disconnect(struct musb *musb)
 		spin_lock(&musb->lock);
 	}
 
-	switch (musb->xceiv->otg->state) {
+	switch (musb_get_state(musb)) {
 	default:
 		musb_dbg(musb, "Unhandled disconnect %s, setting a_idle",
 			usb_otg_state_string(musb->xceiv->otg->state));
-		musb->xceiv->otg->state = OTG_STATE_A_IDLE;
+		musb_set_state(musb, OTG_STATE_A_IDLE);
 		MUSB_HST_MODE(musb);
 		break;
 	case OTG_STATE_A_PERIPHERAL:
-		musb->xceiv->otg->state = OTG_STATE_A_WAIT_BCON;
+		musb_set_state(musb, OTG_STATE_A_WAIT_BCON);
 		MUSB_HST_MODE(musb);
 		break;
 	case OTG_STATE_B_WAIT_ACON:
 	case OTG_STATE_B_HOST:
 	case OTG_STATE_B_PERIPHERAL:
 	case OTG_STATE_B_IDLE:
-		musb->xceiv->otg->state = OTG_STATE_B_IDLE;
+		musb_set_state(musb, OTG_STATE_B_IDLE);
 		break;
 	case OTG_STATE_B_SRP_INIT:
 		break;
@@ -2080,13 +2080,13 @@ __acquires(musb->lock)
 		 * In that case, do not rely on devctl for setting
 		 * peripheral mode.
 		 */
-		musb->xceiv->otg->state = OTG_STATE_B_PERIPHERAL;
+		musb_set_state(musb, OTG_STATE_B_PERIPHERAL);
 		musb->g.is_a_peripheral = 0;
 	} else if (devctl & MUSB_DEVCTL_BDEVICE) {
-		musb->xceiv->otg->state = OTG_STATE_B_PERIPHERAL;
+		musb_set_state(musb, OTG_STATE_B_PERIPHERAL);
 		musb->g.is_a_peripheral = 0;
 	} else {
-		musb->xceiv->otg->state = OTG_STATE_A_PERIPHERAL;
+		musb_set_state(musb, OTG_STATE_A_PERIPHERAL);
 		musb->g.is_a_peripheral = 1;
 	}