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Subject[PATCH V1 2/8] usb: gadget: tegra-xudc: Add vbus_draw support
Date
Register vbus_draw to gadget ops and update corresponding vbus
draw current to usb_phy.

Signed-off-by: Nagarjuna Kristam <nkristam@nvidia.com>
---
drivers/usb/gadget/udc/tegra-xudc.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)

diff --git a/drivers/usb/gadget/udc/tegra-xudc.c b/drivers/usb/gadget/udc/tegra-xudc.c
index 52a6add..9d3c109 100644
--- a/drivers/usb/gadget/udc/tegra-xudc.c
+++ b/drivers/usb/gadget/udc/tegra-xudc.c
@@ -492,6 +492,7 @@ struct tegra_xudc {
bool powergated;

struct usb_phy **usbphy;
+ struct usb_phy *curr_usbphy;
struct notifier_block vbus_nb;

struct completion disconnect_complete;
@@ -719,6 +720,7 @@ static int tegra_xudc_vbus_notify(struct notifier_block *nb,
if (!xudc->suspended && phy_index != -1) {
xudc->curr_utmi_phy = xudc->utmi_phy[phy_index];
xudc->curr_usb3_phy = xudc->usb3_phy[phy_index];
+ xudc->curr_usbphy = usbphy;
schedule_work(&xudc->usb_role_sw_work);
}

@@ -2042,6 +2044,19 @@ static int tegra_xudc_gadget_stop(struct usb_gadget *gadget)
return 0;
}

+static int tegra_xudc_gadget_vbus_draw(struct usb_gadget *gadget,
+ unsigned int m_a)
+{
+ struct tegra_xudc *xudc = to_xudc(gadget);
+
+ dev_dbg(xudc->dev, "%s: %u mA\n", __func__, m_a);
+
+ if (xudc->curr_usbphy->chg_type == SDP_TYPE)
+ usb_phy_set_power(xudc->curr_usbphy, m_a);
+
+ return 0;
+}
+
static int tegra_xudc_set_selfpowered(struct usb_gadget *gadget, int is_on)
{
struct tegra_xudc *xudc = to_xudc(gadget);
@@ -2058,6 +2073,7 @@ static struct usb_gadget_ops tegra_xudc_gadget_ops = {
.pullup = tegra_xudc_gadget_pullup,
.udc_start = tegra_xudc_gadget_start,
.udc_stop = tegra_xudc_gadget_stop,
+ .vbus_draw = tegra_xudc_gadget_vbus_draw,
.set_selfpowered = tegra_xudc_set_selfpowered,
};

--
2.7.4
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