From: Haotien Hsu <haotienh@nvidia.com>
To: Vinod Koul <vkoul@kernel.org>,
Kishon Vijay Abraham I <kishon@kernel.org>
Cc: JC Kuo <jckuo@nvidia.com>,
Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
Wayne Chang <waynec@nvidia.com>, <linux-phy@lists.infradead.org>,
<linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Haotien Hsu <haotienh@nvidia.com>
Subject: [PATCH] phy: tegra: xusb: Support USB role default mode
Date: Fri, 16 Dec 2022 12:21:46 +0800 [thread overview]
Message-ID: <20221216042146.99307-1-haotienh@nvidia.com> (raw)
Support role-switch-default-mode property when usb-role-switch is
enabled.
Signed-off-by: Haotien Hsu <haotienh@nvidia.com>
---
drivers/phy/tegra/xusb.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c
index 3707a0b5c1ae..78045bd6c214 100644
--- a/drivers/phy/tegra/xusb.c
+++ b/drivers/phy/tegra/xusb.c
@@ -718,6 +718,22 @@ static int tegra_xusb_setup_usb_role_switch(struct tegra_xusb_port *port)
return err;
}
+static void tegra_xusb_parse_usb_role_default_mode(struct tegra_xusb_port *port)
+{
+ enum usb_role role = USB_ROLE_NONE;
+ enum usb_dr_mode mode = usb_get_role_switch_default_mode(&port->dev);
+
+ if (mode == USB_DR_MODE_HOST)
+ role = USB_ROLE_HOST;
+ else if (mode == USB_DR_MODE_PERIPHERAL)
+ role = USB_ROLE_DEVICE;
+
+ if (role != USB_ROLE_NONE) {
+ usb_role_switch_set_role(port->usb_role_sw, role);
+ dev_dbg(&port->dev, "usb role default mode is %s", modes[mode]);
+ }
+}
+
static int tegra_xusb_usb2_port_parse_dt(struct tegra_xusb_usb2_port *usb2)
{
struct tegra_xusb_port *port = &usb2->base;
@@ -747,6 +763,7 @@ static int tegra_xusb_usb2_port_parse_dt(struct tegra_xusb_usb2_port *usb2)
err = tegra_xusb_setup_usb_role_switch(port);
if (err < 0)
return err;
+ tegra_xusb_parse_usb_role_default_mode(port);
} else {
dev_err(&port->dev, "usb-role-switch not found for %s mode",
modes[usb2->mode]);
--
2.25.1
next reply other threads:[~2022-12-16 4:22 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-16 4:21 Haotien Hsu [this message]
2023-01-13 17:50 ` Vinod Koul
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