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@xxxxxxxxxxx>
---
arch/arm/mach-shmobile/board-mackerel.c | 1 +
drivers/usb/renesas_usbhs/common.c | 4 ++++
include/linux/usb/renesas_usbhs.h | 5 +++++
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 d41c01f..0d59599 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 b327458..1161d78 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 040d8bb..e5a40c3 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 */
};
/*
--
1.7.4.1
--
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