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authorChris Brandt <chris.brandt@renesas.com>2019-05-15 17:20:42 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-05-21 10:25:59 +0200
commit2195e3af9079ea067079e98446ea6a457c81a98c (patch)
tree93cef59657f35102c5051d54ee3bd0f9ac74a90a /drivers/usb/renesas_usbhs/common.c
parentusb: renesas_usbhs: move flags to param (diff)
downloadlinux-2195e3af9079ea067079e98446ea6a457c81a98c.tar.xz
linux-2195e3af9079ea067079e98446ea6a457c81a98c.zip
usb: renesas_usbhs: add support for CNEN bit
For some SoC, CNEN must be set for USB Device mode operation. Signed-off-by: Chris Brandt <chris.brandt@renesas.com> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/renesas_usbhs/common.c')
-rw-r--r--drivers/usb/renesas_usbhs/common.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index 1de7a44f3415..734fb4e542c5 100644
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -114,6 +114,12 @@ void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable)
u16 mask = DCFM | DRPD | DPRPU | HSE | USBE;
u16 val = HSE | USBE;
+ /* CNEN bit is required for function operation */
+ if (usbhs_get_dparam(priv, has_cnen)) {
+ mask |= CNEN;
+ val |= CNEN;
+ }
+
/*
* if enable
*