usb: phy: phy-generic: No need to call gpiod_direction_output() twice

Commit 9eb0797722895f4309b4 ("usb: phy: generic: fix the gpios to be optional")
calls gpiod_direction_output() in the probe function, so there is no need to
call it again, as we can simply call gpiod_set_value() directly.

Also, in usb_gen_phy_shutdown() we can simply put the GPIO directly in its
active level state and this allows us to simplify the nop_reset function to
treat only the reset case.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/phy/phy-generic.c

@@ -62,14 +62,14 @@ static int nop_set_suspend(struct usb_phy *x, int suspend)
 	return 0;
 }
 
-static void nop_reset_set(struct usb_phy_generic *nop, int asserted)
+static void nop_reset(struct usb_phy_generic *nop)
 {
 	if (!nop->gpiod_reset)
 		return;
 
-	gpiod_direction_output(nop->gpiod_reset, !asserted);
+	gpiod_set_value(nop->gpiod_reset, 1);
 	usleep_range(10000, 20000);
-	gpiod_set_value(nop->gpiod_reset, asserted);
+	gpiod_set_value(nop->gpiod_reset, 0);
 }
 
 /* interface to regulator framework */
@@ -151,8 +151,7 @@ int usb_gen_phy_init(struct usb_phy *phy)
 	if (!IS_ERR(nop->clk))
 		clk_prepare_enable(nop->clk);
 
-	/* De-assert RESET */
-	nop_reset_set(nop, 0);
+	nop_reset(nop);
 
 	return 0;
 }
@@ -162,8 +161,7 @@ void usb_gen_phy_shutdown(struct usb_phy *phy)
 {
 	struct usb_phy_generic *nop = dev_get_drvdata(phy->dev);
 
-	/* Assert RESET */
-	nop_reset_set(nop, 1);
+	gpiod_set_value(nop->gpiod_reset, 1);
 
 	if (!IS_ERR(nop->clk))
 		clk_disable_unprepare(nop->clk);