arm: omap4: usb: explicitly configure MUSB pads

Use the mux framework APIs to explicitly configure
the MUSB pads. The MUSB controller in OMAP4 can use
either the old ULPI interface, or the new internal PHY.
Configure the pads accordingly.
Signed-off-by: NAnand Gadiyar <gadiyar@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

arch/arm/mach-omap2/usb-musb.c

@@ -30,6 +30,7 @@
 #include <mach/irqs.h>
 #include <mach/am35xx.h>
 #include <plat/usb.h>
+#include "mux.h"
 
 #if defined(CONFIG_USB_MUSB_OMAP2PLUS) || defined (CONFIG_USB_MUSB_AM35X)
 
@@ -88,6 +89,43 @@ static struct platform_device musb_device = {
 	.resource	= musb_resources,
 };
 
+static void usb_musb_mux_init(struct omap_musb_board_data *board_data)
+{
+	switch (board_data->interface_type) {
+	case MUSB_INTERFACE_UTMI:
+		omap_mux_init_signal("usba0_otg_dp", OMAP_PIN_INPUT);
+		omap_mux_init_signal("usba0_otg_dm", OMAP_PIN_INPUT);
+		break;
+	case MUSB_INTERFACE_ULPI:
+		omap_mux_init_signal("usba0_ulpiphy_clk",
+						OMAP_PIN_INPUT_PULLDOWN);
+		omap_mux_init_signal("usba0_ulpiphy_stp",
+						OMAP_PIN_INPUT_PULLDOWN);
+		omap_mux_init_signal("usba0_ulpiphy_dir",
+						OMAP_PIN_INPUT_PULLDOWN);
+		omap_mux_init_signal("usba0_ulpiphy_nxt",
+						OMAP_PIN_INPUT_PULLDOWN);
+		omap_mux_init_signal("usba0_ulpiphy_dat0",
+						OMAP_PIN_INPUT_PULLDOWN);
+		omap_mux_init_signal("usba0_ulpiphy_dat1",
+						OMAP_PIN_INPUT_PULLDOWN);
+		omap_mux_init_signal("usba0_ulpiphy_dat2",
+						OMAP_PIN_INPUT_PULLDOWN);
+		omap_mux_init_signal("usba0_ulpiphy_dat3",
+						OMAP_PIN_INPUT_PULLDOWN);
+		omap_mux_init_signal("usba0_ulpiphy_dat4",
+						OMAP_PIN_INPUT_PULLDOWN);
+		omap_mux_init_signal("usba0_ulpiphy_dat5",
+						OMAP_PIN_INPUT_PULLDOWN);
+		omap_mux_init_signal("usba0_ulpiphy_dat6",
+						OMAP_PIN_INPUT_PULLDOWN);
+		omap_mux_init_signal("usba0_ulpiphy_dat7",
+						OMAP_PIN_INPUT_PULLDOWN);
+		break;
+	default:
+		break;
+	}
+}
 void __init usb_musb_init(struct omap_musb_board_data *board_data)
 {
 	if (cpu_is_omap243x()) {
@@ -102,6 +140,8 @@ void __init usb_musb_init(struct omap_musb_board_data *board_data)
 		musb_resources[0].start = OMAP44XX_HSUSB_OTG_BASE;
 		musb_resources[1].start = OMAP44XX_IRQ_HS_USB_MC_N;
 		musb_resources[2].start = OMAP44XX_IRQ_HS_USB_DMA_N;
+
+		usb_musb_mux_init(board_data);
 	}
 	musb_resources[0].end = musb_resources[0].start + SZ_4K - 1;