From: Chunfeng Yun Date: Fri, 13 Oct 2017 09:10:46 +0000 (+0800) Subject: usb: mtu3: set otg_sel for u2port only if works as dual-role mode X-Git-Tag: v4.19~2224^2~117^2~21 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4da72e6d2afb24c9cd5707eef7947c2f22dd03fc;p=platform%2Fkernel%2Flinux-rpi.git usb: mtu3: set otg_sel for u2port only if works as dual-role mode When set otg_sel(SSUSB_U2_PORT_OTG_SEL) for u2port which supports dual-role mode, the controller will automatically switch mode between host and device according to IDDIG signal. But if the u2port only supports device mode, and no IDDIG pin is provided, setting otg_sel may cause failure of detection by host. So set it only for dual-role mode. Signed-off-by: Chunfeng Yun Signed-off-by: Felipe Balbi --- diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index 67f7a30..7c149a7 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -115,7 +115,9 @@ static int mtu3_device_enable(struct mtu3 *mtu) mtu3_clrbits(ibase, SSUSB_U2_CTRL(0), (SSUSB_U2_PORT_DIS | SSUSB_U2_PORT_PDN | SSUSB_U2_PORT_HOST_SEL)); - mtu3_setbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_OTG_SEL); + + if (mtu->ssusb->dr_mode == USB_DR_MODE_OTG) + mtu3_setbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_OTG_SEL); return ssusb_check_clocks(mtu->ssusb, check_clk); } @@ -130,7 +132,10 @@ static void mtu3_device_disable(struct mtu3 *mtu) mtu3_setbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_DIS | SSUSB_U2_PORT_PDN); - mtu3_clrbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_OTG_SEL); + + if (mtu->ssusb->dr_mode == USB_DR_MODE_OTG) + mtu3_clrbits(ibase, SSUSB_U2_CTRL(0), SSUSB_U2_PORT_OTG_SEL); + mtu3_setbits(ibase, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN); }