From: Bin Liu Date: Tue, 18 Dec 2018 13:58:05 +0000 (-0600) Subject: usb: musb: dsps: fix runtime pm for peripheral mode X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=54578ee883e34d2d1c518d48f1c1e2dd3f387188;p=openwrt%2Fstaging%2Fblogic.git usb: musb: dsps: fix runtime pm for peripheral mode Since the runtime PM support was added in musb, dsps relies on the timer calling otg_timer() to activate the usb subsystem. However the driver doesn't enable the timer for peripheral port, then the peripheral port is unable to be enumerated by a host if the other usb port is disabled or in peripheral mode too. So let's start the timer for peripheral port too. Fixes: ea2f35c01d5e ("usb: musb: Fix sleeping function called from invalid context for hdrc glue") Acked-by: Tony Lindgren Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 1e6d78b1334e..403eb97915f8 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -181,9 +181,11 @@ static void dsps_musb_enable(struct musb *musb) musb_writel(reg_base, wrp->epintr_set, epmask); musb_writel(reg_base, wrp->coreintr_set, coremask); - /* start polling for ID change in dual-role idle mode */ - if (musb->xceiv->otg->state == OTG_STATE_B_IDLE && - musb->port_mode == MUSB_OTG) + /* + * start polling for runtime PM active and idle, + * and for ID change in dual-role idle mode. + */ + if (musb->xceiv->otg->state == OTG_STATE_B_IDLE) dsps_mod_timer(glue, -1); } @@ -254,6 +256,10 @@ static int dsps_check_status(struct musb *musb, void *unused) musb->xceiv->otg->state = OTG_STATE_A_IDLE; MUSB_HST_MODE(musb); } + + if (musb->port_mode == MUSB_PERIPHERAL) + skip_session = 1; + if (!(devctl & MUSB_DEVCTL_SESSION) && !skip_session) musb_writeb(mregs, MUSB_DEVCTL, MUSB_DEVCTL_SESSION);