usb: gadget: renesas_usbhs: add usbhs_bus_get_speed()

current mod_gadget had got usb speed on
usbhsg_irq_dev_state() which is status change interrupt callback function.
And the usb speed data was included in its parameter.

But this style works for mod_gadget,
but doesn't work for mod_host which
isn't interrupted when device status was changed.

This patch add usbhs_bus_get_speed() to solve this issue.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/renesas_usbhs/common.c

@@ -159,6 +159,22 @@ void usbhs_bus_send_reset(struct usbhs_priv *priv)
 	usbhs_bset(priv, DVSTCTR, (USBRST | UACT), USBRST);
 }
 
+int usbhs_bus_get_speed(struct usbhs_priv *priv)
+{
+	u16 dvstctr = usbhs_read(priv, DVSTCTR);
+
+	switch (RHST & dvstctr) {
+	case RHST_LOW_SPEED:
+		return USB_SPEED_LOW;
+	case RHST_FULL_SPEED:
+		return USB_SPEED_FULL;
+	case RHST_HIGH_SPEED:
+		return USB_SPEED_HIGH;
+	}
+
+	return USB_SPEED_UNKNOWN;
+}
+
 int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable)
 {
 	struct platform_device *pdev = usbhs_priv_to_pdev(priv);

drivers/usb/renesas_usbhs/common.h

@@ -264,6 +264,7 @@ void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable);
  */
 void usbhs_bus_send_sof_enable(struct usbhs_priv *priv);
 void usbhs_bus_send_reset(struct usbhs_priv *priv);
+int usbhs_bus_get_speed(struct usbhs_priv *priv);
 int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable);
 
 /*

drivers/usb/renesas_usbhs/mod.c

@@ -168,20 +168,6 @@ void usbhs_mod_remove(struct usbhs_priv *priv)
 /*
  *		status functions
  */
-int usbhs_status_get_usb_speed(struct usbhs_irq_state *irq_state)
-{
-	switch (irq_state->dvstctr & RHST) {
-	case RHST_LOW_SPEED:
-		return USB_SPEED_LOW;
-	case RHST_FULL_SPEED:
-		return USB_SPEED_FULL;
-	case RHST_HIGH_SPEED:
-		return USB_SPEED_HIGH;
-	}
-
-	return USB_SPEED_UNKNOWN;
-}
-
 int usbhs_status_get_device_state(struct usbhs_irq_state *irq_state)
 {
 	int state = irq_state->intsts0 & DVSQ_MASK;
@@ -221,8 +207,6 @@ static void usbhs_status_get_each_irq(struct usbhs_priv *priv,
 	state->intsts0 = usbhs_read(priv, INTSTS0);
 	state->intsts1 = usbhs_read(priv, INTSTS1);
 
-	state->dvstctr = usbhs_read(priv, DVSTCTR);
-
 	/* mask */
 	if (mod) {
 		state->brdysts = usbhs_read(priv, BRDYSTS);

drivers/usb/renesas_usbhs/mod.h

@@ -30,7 +30,6 @@ struct usbhs_irq_state {
 	u16 brdysts;
 	u16 nrdysts;
 	u16 bempsts;
-	u16 dvstctr;
 };
 
 struct usbhs_mod {
@@ -99,7 +98,6 @@ void usbhs_mod_autonomy_mode(struct usbhs_priv *priv);
 /*
  *		status functions
  */
-int usbhs_status_get_usb_speed(struct usbhs_irq_state *irq_state);
 int usbhs_status_get_device_state(struct usbhs_irq_state *irq_state);
 int usbhs_status_get_ctrl_stage(struct usbhs_irq_state *irq_state);
 

drivers/usb/renesas_usbhs/mod_gadget.c

@@ -353,7 +353,7 @@ static int usbhsg_irq_dev_state(struct usbhs_priv *priv,
 	struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
 	struct device *dev = usbhsg_gpriv_to_dev(gpriv);
 
-	gpriv->gadget.speed = usbhs_status_get_usb_speed(irq_state);
+	gpriv->gadget.speed = usbhs_bus_get_speed(priv);
 
 	dev_dbg(dev, "state = %x : speed : %d\n",
 		usbhs_status_get_device_state(irq_state),