From c2ec3a732a6bb65635693f6d86d2b7bf073b6148 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Wed, 30 Oct 2013 09:19:29 +0800 Subject: usb: chipidea: only get vbus regulator for non-peripheral mode If the user chooses peripheral mode for this controller, the vbus regulator doesn't need to get, since the host will supply the vbus, it can save one vbus pin for other usage. Signed-off-by: Peter Chen Tested-by: Frank Li Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/core.c | 27 +++++++++++++++------------ 1 file changed, 15 insertions(+), 12 deletions(-) (limited to 'drivers/usb') diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 06204b77fc4c..5d8981c5235e 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -392,18 +392,6 @@ static irqreturn_t ci_irq(int irq, void *data) static int ci_get_platdata(struct device *dev, struct ci_hdrc_platform_data *platdata) { - /* Get the vbus regulator */ - platdata->reg_vbus = devm_regulator_get(dev, "vbus"); - if (PTR_ERR(platdata->reg_vbus) == -EPROBE_DEFER) { - return -EPROBE_DEFER; - } else if (PTR_ERR(platdata->reg_vbus) == -ENODEV) { - platdata->reg_vbus = NULL; /* no vbus regualator is needed */ - } else if (IS_ERR(platdata->reg_vbus)) { - dev_err(dev, "Getting regulator error: %ld\n", - PTR_ERR(platdata->reg_vbus)); - return PTR_ERR(platdata->reg_vbus); - } - if (!platdata->phy_mode) platdata->phy_mode = of_usb_get_phy_mode(dev->of_node); @@ -413,6 +401,21 @@ static int ci_get_platdata(struct device *dev, if (platdata->dr_mode == USB_DR_MODE_UNKNOWN) platdata->dr_mode = USB_DR_MODE_OTG; + if (platdata->dr_mode != USB_DR_MODE_PERIPHERAL) { + /* Get the vbus regulator */ + platdata->reg_vbus = devm_regulator_get(dev, "vbus"); + if (PTR_ERR(platdata->reg_vbus) == -EPROBE_DEFER) { + return -EPROBE_DEFER; + } else if (PTR_ERR(platdata->reg_vbus) == -ENODEV) { + /* no vbus regualator is needed */ + platdata->reg_vbus = NULL; + } else if (IS_ERR(platdata->reg_vbus)) { + dev_err(dev, "Getting regulator error: %ld\n", + PTR_ERR(platdata->reg_vbus)); + return PTR_ERR(platdata->reg_vbus); + } + } + return 0; } -- cgit v1.2.1