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usb: dwc3-generic: set "mode" based on caller of dwc3_generic_probe()

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There are only two callers of "dwc3_generic_probe()", namely:
1. dwc3_generic_peripheral_probe()
2. dwc3_generic_host_probe()
Currently, the "mode" is set based on the device-tree node of the
platform device. Also, the DWC3 core doesn't support updating the "mode"
dynamically at runtime if it is set to "OTG", i.e. "OTG" is treated as a
separate mode in itself, rather than being treated as a mode which should
eventually lead to "host"/"peripheral".

Given that the callers of "dwc3_generic_probe()" clarify the expected
"mode" of the USB Controller, use that "mode" instead of the one
specified in the device-tree. This shall allow the USB Controller to
function both as a "Host" and as a "Peripheral" when the "mode" is "otg"
in the device-tree, based on the caller of "dwc3_generic_probe()".

Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
This commit is contained in:
Siddharth Vadapalli 2024-11-26 17:33:18 +05:30 • committed by Tom Rini
parent bda30f83f9
commit 7af18fc5ed
1 changed files with 5 additions and 4 deletions
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9
drivers/usb/dwc3/dwc3-generic.c
View file

@ -51,7 +51,8 @@ struct dwc3_generic_host_priv {
};
static int dwc3_generic_probe(struct udevice *dev,
struct dwc3_generic_priv *priv)
struct dwc3_generic_priv *priv,
enum usb_dr_mode mode)
{
int rc;
struct dwc3_generic_plat *plat = dev_get_plat(dev);
@ -62,7 +63,7 @@ static int dwc3_generic_probe(struct udevice *dev,
dwc3->dev = dev;
dwc3->maximum_speed = plat->maximum_speed;
dwc3->dr_mode = plat->dr_mode;
dwc3->dr_mode = mode;
#if CONFIG_IS_ENABLED(OF_CONTROL)
dwc3_of_parse(dwc3);
@ -197,7 +198,7 @@ static int dwc3_generic_peripheral_probe(struct udevice *dev)
{
struct dwc3_generic_priv *priv = dev_get_priv(dev);
return dwc3_generic_probe(dev, priv);
return dwc3_generic_probe(dev, priv, USB_DR_MODE_PERIPHERAL);
}
static int dwc3_generic_peripheral_remove(struct udevice *dev)
@ -241,7 +242,7 @@ static int dwc3_generic_host_probe(struct udevice *dev)
struct dwc3_generic_host_priv *priv = dev_get_priv(dev);
int rc;
rc = dwc3_generic_probe(dev, &priv->gen_priv);
rc = dwc3_generic_probe(dev, &priv->gen_priv, USB_DR_MODE_HOST);
if (rc)
return rc;