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usb: dwc3: drd: Add support for usb-conn-gpio based usb-role-switch

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usb-conn-gpio devices are a subnode of the USB interface controller, which
needs to be populated.
This allows having a non-type-c connector providing dual-role.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://lore.kernel.org/r/20220105071407.2240302-1-alexander.stein@ew.tq-group.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexander Stein 2022-01-05 08:14:07 +01:00 committed by Greg Kroah-Hartman
parent 7bd42fb95e
commit a102f07e4e
1 changed files with 13 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

13
drivers/usb/dwc3/drd.c
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@ -9,6 +9,7 @@
#include <linux/extcon.h>
#include <linux/of_graph.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/property.h>
@ -559,6 +560,18 @@ static int dwc3_setup_role_switch(struct dwc3 *dwc)
if (IS_ERR(dwc->role_sw))
return PTR_ERR(dwc->role_sw);
if (IS_ENABLED(CONFIG_OF)) {
/* populate connector entry */
int ret = devm_of_platform_populate(dwc->dev);
if (ret) {
usb_role_switch_unregister(dwc->role_sw);
dwc->role_sw = NULL;
dev_err(dwc->dev, "DWC3 platform devices creation failed: %i\n", ret);
return ret;
}
}
dwc3_set_mode(dwc, mode);
return 0;
}