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authorNagarjuna Kristam <nkristam@nvidia.com>2019-10-18 15:08:09 +0530
committerKishon Vijay Abraham I <kishon@ti.com>2019-10-23 13:20:36 +0530
commita8a24429dd1d799f1c6737779af88c1d39290a77 (patch)
tree6a78993eb757a7c102f8832a074010c18490f5b1 /drivers/phy/tegra
parent90767cdfea89c3ac7012035d66633b9ba839091a (diff)
downloadlinux-a8a24429dd1d799f1c6737779af88c1d39290a77.tar.bz2
phy: tegra: xusb: Add vbus override support on Tegra186
Tegra XUSB device control driver needs to control vbus override during its operations, add API for the support. Signed-off-by: Nagarjuna Kristam <nkristam@nvidia.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers/phy/tegra')
-rw-r--r--drivers/phy/tegra/xusb-tegra186.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/phy/tegra/xusb-tegra186.c b/drivers/phy/tegra/xusb-tegra186.c
index 6f3afaf9398f..84c27394c181 100644
--- a/drivers/phy/tegra/xusb-tegra186.c
+++ b/drivers/phy/tegra/xusb-tegra186.c
@@ -857,9 +857,32 @@ static void tegra186_xusb_padctl_remove(struct tegra_xusb_padctl *padctl)
{
}
+static int tegra186_xusb_padctl_vbus_override(struct tegra_xusb_padctl *padctl,
+ bool status)
+{
+ u32 value;
+
+ dev_dbg(padctl->dev, "%s vbus override\n", status ? "set" : "clear");
+
+ value = padctl_readl(padctl, USB2_VBUS_ID);
+
+ if (status) {
+ value |= VBUS_OVERRIDE;
+ value &= ~ID_OVERRIDE(~0);
+ value |= ID_OVERRIDE_FLOATING;
+ } else {
+ value &= ~VBUS_OVERRIDE;
+ }
+
+ padctl_writel(padctl, value, USB2_VBUS_ID);
+
+ return 0;
+}
+
static const struct tegra_xusb_padctl_ops tegra186_xusb_padctl_ops = {
.probe = tegra186_xusb_padctl_probe,
.remove = tegra186_xusb_padctl_remove,
+ .vbus_override = tegra186_xusb_padctl_vbus_override,
};
static const char * const tegra186_xusb_padctl_supply_names[] = {