phy: tegra: xusb: Remove usb3 supply

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2122414
Tested: Verify USB-A and USB-C are functional on Nvidia Orin board,
 and no regressions on other platforms.

commit 2428787
Author: Wayne Chang <waynec@nvidia.com>
Date:   Wed Oct 5 16:40:31 2022 +0800

    phy: tegra: xusb: Remove usb3 supply

    Remove redundant codes for getting the vbus supply of usb3 ports because
    we get and control the vbus supply by the companion usb2 ports

    Signed-off-by: Wayne Chang <waynec@nvidia.com>
    Signed-off-by: Haotien Hsu <haotienh@nvidia.com>
    Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
    Link: https://lore.kernel.org/r/20221005084031.2154251-1-haotienh@nvidia.com
    Signed-off-by: Vinod Koul <vkoul@kernel.org>
    (cherry picked from commit 2428787)

Signed-off-by: David Marlin <dmarlin@redhat.com>

Author: damarlin

drivers/phy/tegra/xusb-tegra124.c

@@ -1652,7 +1652,6 @@ tegra124_usb3_port_map(struct tegra_xusb_port *port)
 
 static const struct tegra_xusb_port_ops tegra124_usb3_port_ops = {
 	.release = tegra_xusb_usb3_port_release,
-	.remove = tegra_xusb_usb3_port_remove,
 	.enable = tegra124_usb3_port_enable,
 	.disable = tegra124_usb3_port_disable,
 	.map = tegra124_usb3_port_map,

drivers/phy/tegra/xusb-tegra186.c

@@ -1185,7 +1185,6 @@ tegra186_usb3_port_map(struct tegra_xusb_port *port)
 
 static const struct tegra_xusb_port_ops tegra186_usb3_port_ops = {
 	.release = tegra_xusb_usb3_port_release,
-	.remove = tegra_xusb_usb3_port_remove,
 	.enable = tegra186_usb3_port_enable,
 	.disable = tegra186_usb3_port_disable,
 	.map = tegra186_usb3_port_map,

drivers/phy/tegra/xusb-tegra210.c

@@ -3078,7 +3078,6 @@ tegra210_usb3_port_map(struct tegra_xusb_port *port)
 
 static const struct tegra_xusb_port_ops tegra210_usb3_port_ops = {
 	.release = tegra_xusb_usb3_port_release,
-	.remove = tegra_xusb_usb3_port_remove,
 	.enable = tegra210_usb3_port_enable,
 	.disable = tegra210_usb3_port_disable,
 	.map = tegra210_usb3_port_map,

drivers/phy/tegra/xusb.c

@@ -954,8 +954,7 @@ static int tegra_xusb_usb3_port_parse_dt(struct tegra_xusb_usb3_port *usb3)
 			return -EINVAL;
 	}
 
-	usb3->supply = regulator_get(&port->dev, "vbus");
-	return PTR_ERR_OR_ZERO(usb3->supply);
+	return 0;
 }
 
 static int tegra_xusb_add_usb3_port(struct tegra_xusb_padctl *padctl,
@@ -1012,13 +1011,6 @@ void tegra_xusb_usb3_port_release(struct tegra_xusb_port *port)
 	kfree(usb3);
 }
 
-void tegra_xusb_usb3_port_remove(struct tegra_xusb_port *port)
-{
-	struct tegra_xusb_usb3_port *usb3 = to_usb3_port(port);
-
-	regulator_put(usb3->supply);
-}
-
 static void __tegra_xusb_remove_ports(struct tegra_xusb_padctl *padctl)
 {
 	struct tegra_xusb_port *port, *tmp;

drivers/phy/tegra/xusb.h

@@ -359,7 +359,6 @@ void tegra_xusb_hsic_port_release(struct tegra_xusb_port *port);
 
 struct tegra_xusb_usb3_port {
 	struct tegra_xusb_port base;
-	struct regulator *supply;
 	bool context_saved;
 	unsigned int port;
 	bool internal;
@@ -381,7 +380,6 @@ struct tegra_xusb_usb3_port *
 tegra_xusb_find_usb3_port(struct tegra_xusb_padctl *padctl,
 			  unsigned int index);
 void tegra_xusb_usb3_port_release(struct tegra_xusb_port *port);
-void tegra_xusb_usb3_port_remove(struct tegra_xusb_port *port);
 
 struct tegra_xusb_port_ops {
 	void (*release)(struct tegra_xusb_port *port);