usb: musb-new: Allow the diver not to use the set_phy_power() callback

The set_phy_power() callback is part of struct omap_musb_board_data. This
structure is part of the platform data passed to the musb-new driver. This
does not really fit with the Driver Model, so allow not to use struct
omap_musb_board_data to turn the phy on or off.
Signed-off-by: NJean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: NTom Rini <trini@konsulko.com>

drivers/usb/musb-new/am35x.c

@@ -406,7 +406,7 @@ static int am35x_musb_init(struct musb *musb)
 	musb_writel(reg_base, USB_CTRL_REG, AM35X_SOFT_RESET_MASK);
 
 	/* Start the on-chip PHY and its PLL. */
-	if (data->set_phy_power)
+	if (data && data->set_phy_power)
 		data->set_phy_power(data->dev, 1);
 
 	msleep(5);
@@ -437,7 +437,7 @@ static int am35x_musb_exit(struct musb *musb)
 #endif
 
 	/* Shutdown the on-chip PHY and its PLL. */
-	if (data->set_phy_power)
+	if (data && data->set_phy_power)
 		data->set_phy_power(data->dev, 0);
 
 #ifndef __UBOOT__
@@ -628,7 +628,7 @@ static int am35x_suspend(struct device *dev)
 	struct omap_musb_board_data *data = plat->board_data;
 
 	/* Shutdown the on-chip PHY and its PLL. */
-	if (data->set_phy_power)
+	if (data && data->set_phy_power)
 		data->set_phy_power(data->dev, 0);
 
 	clk_disable(glue->phy_clk);
@@ -645,7 +645,7 @@ static int am35x_resume(struct device *dev)
 	int			ret;
 
 	/* Start the on-chip PHY and its PLL. */
-	if (data->set_phy_power)
+	if (data && data->set_phy_power)
 		data->set_phy_power(data->dev, 1);
 
 	ret = clk_enable(glue->phy_clk);

drivers/usb/musb-new/musb_dsps.c

@@ -450,7 +450,7 @@ static int dsps_musb_init(struct musb *musb)
 	dsps_writel(reg_base, wrp->control, (1 << wrp->reset));
 
 	/* Start the on-chip PHY and its PLL. */
-	if (data->set_phy_power)
+	if (data && data->set_phy_power)
 		data->set_phy_power(data->dev, 1);
 
 	musb->isr = dsps_interrupt;
@@ -491,7 +491,7 @@ static int dsps_musb_exit(struct musb *musb)
 #endif
 
 	/* Shutdown the on-chip PHY and its PLL. */
-	if (data->set_phy_power)
+	if (data && data->set_phy_power)
 		data->set_phy_power(data->dev, 0);
 
 #ifndef __UBOOT__
@@ -691,7 +691,7 @@ static int dsps_suspend(struct device *dev)
 	struct omap_musb_board_data *data = plat->board_data;
 
 	/* Shutdown the on-chip PHY and its PLL. */
-	if (data->set_phy_power)
+	if (data && data->set_phy_power)
 		data->set_phy_power(data->dev, 0);
 
 	return 0;
@@ -703,7 +703,7 @@ static int dsps_resume(struct device *dev)
 	struct omap_musb_board_data *data = plat->board_data;
 
 	/* Start the on-chip PHY and its PLL. */
-	if (data->set_phy_power)
+	if (data && data->set_phy_power)
 		data->set_phy_power(data->dev, 1);
 
 	return 0;