usb: gadget: renesas_usbhs: support otg pin control

some renesas_usbhs device is supporting OTG external device interface.
In that device, it is necessary to control PWEN/EXTLP on DVSTCTR.
This patch support it.
But renesas_usbhs driver doesn't have OTG support for now.

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

3 files changed, 10 insertions, 0 deletions

diff --git a/arch/arm/mach-shmobile/board-mackerel.c b/arch/arm/mach-shmobile/board-mackerel.c
index 0ea71f8d4b89..c20612ea5d0e 100644
--- a/arch/arm/mach-shmobile/board-mackerel.c
+++ b/arch/arm/mach-shmobile/board-mackerel.c
@@ -808,6 +808,7 @@ static struct usbhs_private usbhs1_private = {
                 },
                 .driver_param = {
                         .buswait_bwait  = 4,
+                        .has_otg        = 1,
                         .pipe_type      = usbhs1_pipe_cfg,
                         .pipe_size      = ARRAY_SIZE(usbhs1_pipe_cfg),
                 },
diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index b327458f5cad..1161d78e1665 100644
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -114,6 +114,10 @@ void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable)
 {
         u16 mask = DCFM | DRPD | DPRPU;
         u16 val  = DCFM | DRPD;
+        int has_otg = usbhs_get_dparam(priv, has_otg);
+
+        if (has_otg)
+                usbhs_bset(priv, DVSTCTR, (EXTLP | PWEN), (EXTLP | PWEN));
 
         /*
          * if enable
diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h
index 040d8bb2b5a2..e5a40c318548 100644
--- a/include/linux/usb/renesas_usbhs.h
+++ b/include/linux/usb/renesas_usbhs.h
@@ -136,6 +136,11 @@ struct renesas_usbhs_driver_param {
          * pio <--> dma border.
          */
         int pio_dma_border; /* default is 64byte */
+
+        /*
+         * option:
+         */
+        u32 has_otg:1; /* for controlling PWEN/EXTLP */
 };
 
 /*