From: Li Jun <[email protected]> If CI_HDRC_TURN_VBUS_EARLY_ON is set, turn on vbus before adding hcd, so it will not set reg_vbus of ehci_ci_priv, then vbus will not be handled by ehci core.
Signed-off-by: Li Jun <[email protected]> Signed-off-by: Peter Chen <[email protected]> --- drivers/usb/chipidea/host.c | 27 ++++++++++++++++++++++----- 1 file changed, 22 insertions(+), 5 deletions(-) diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c index feb9f07..21fe1a3 100644 --- a/drivers/usb/chipidea/host.c +++ b/drivers/usb/chipidea/host.c @@ -44,11 +44,10 @@ static int ehci_ci_portpower(struct usb_hcd *hcd, int portnum, bool enable) struct ehci_hcd *ehci = hcd_to_ehci(hcd); struct ehci_ci_priv *priv = (struct ehci_ci_priv *)ehci->priv; struct device *dev = hcd->self.controller; - struct ci_hdrc *ci = dev_get_drvdata(dev); int ret = 0; int port = HCS_N_PORTS(ehci->hcs_params); - if (priv->reg_vbus && !ci_otg_is_fsm_mode(ci)) { + if (priv->reg_vbus) { if (port > 1) { dev_warn(dev, "Not support multi-port regulator control\n"); @@ -114,12 +113,23 @@ static int host_start(struct ci_hdrc *ci) priv = (struct ehci_ci_priv *)ehci->priv; priv->reg_vbus = NULL; - if (ci->platdata->reg_vbus) - priv->reg_vbus = ci->platdata->reg_vbus; + if (ci->platdata->reg_vbus && !ci_otg_is_fsm_mode(ci)) { + if (ci->platdata->flags & CI_HDRC_TURN_VBUS_EARLY_ON) { + ret = regulator_enable(ci->platdata->reg_vbus); + if (ret) { + dev_err(ci->dev, + "Failed to enable vbus regulator, ret=%d\n", + ret); + goto put_hcd; + } + } else { + priv->reg_vbus = ci->platdata->reg_vbus; + } + } ret = usb_add_hcd(hcd, 0, 0); if (ret) { - goto put_hcd; + goto disable_reg; } else { struct usb_otg *otg = &ci->otg; @@ -139,6 +149,10 @@ static int host_start(struct ci_hdrc *ci) return ret; +disable_reg: + if (ci->platdata->reg_vbus && !ci_otg_is_fsm_mode(ci) && + (ci->platdata->flags & CI_HDRC_TURN_VBUS_EARLY_ON)) + regulator_disable(ci->platdata->reg_vbus); put_hcd: usb_put_hcd(hcd); @@ -152,6 +166,9 @@ static void host_stop(struct ci_hdrc *ci) if (hcd) { usb_remove_hcd(hcd); usb_put_hcd(hcd); + if (ci->platdata->reg_vbus && !ci_otg_is_fsm_mode(ci) && + (ci->platdata->flags & CI_HDRC_TURN_VBUS_EARLY_ON)) + regulator_disable(ci->platdata->reg_vbus); } } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
