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[PW_SID:1069812] usb: dwc3: Add optional VBUS regulator support to SpacemiT K1 #1650

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[PW_SID:1069812] usb: dwc3: Add optional VBUS regulator support to SpacemiT K1 #1650

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22 changes: 21 additions & 1 deletion drivers/usb/dwc3/dwc3-generic-plat.c
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,8 @@
#include <linux/reset.h>
#include <linux/regmap.h>
#include <linux/mfd/syscon.h>
#include <linux/regulator/consumer.h>
#include <linux/usb/otg.h>
#include "glue.h"

#define EIC7700_HSP_BUS_FILTER_EN BIT(0)
Expand Down Expand Up @@ -69,6 +71,20 @@ static int dwc3_eic7700_init(struct dwc3_generic *dwc3g)
return 0;
}

static int dwc3_spacemit_k1_init(struct dwc3_generic *dwc3g)
{
struct device *dev = dwc3g->dev;

if (usb_get_dr_mode(dev) == USB_DR_MODE_HOST) {
int ret = devm_regulator_get_enable_optional(dev, "vbus");

if (ret && ret != -ENODEV)
return dev_err_probe(dev, ret, "failed to enable VBUS\n");
}

return 0;
}

static int dwc3_generic_probe(struct platform_device *pdev)
{
const struct dwc3_generic_config *plat_config;
Expand Down Expand Up @@ -210,10 +226,14 @@ static const struct dwc3_generic_config eic7700_dwc3 = {
.properties = DWC3_DEFAULT_PROPERTIES,
};

static const struct dwc3_generic_config spacemit_k1_dwc3 = {
.init = dwc3_spacemit_k1_init,
};

static const struct of_device_id dwc3_generic_of_match[] = {
{ .compatible = "spacemit,k1-dwc3", },
{ .compatible = "fsl,ls1028a-dwc3", &fsl_ls1028_dwc3},
{ .compatible = "eswin,eic7700-dwc3", &eic7700_dwc3},
{ .compatible = "spacemit,k1-dwc3", &spacemit_k1_dwc3},
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, dwc3_generic_of_match);
Expand Down