As the tegra-udc driver does not yet support all modes, add dr_mode
checking capability.
Warn about invalid configurations and explicitly assign dr_mode before
handing off to the chipidea core driver.
Signed-off-by: Peter Geis <pgwipeout@xxxxxxxxx>
---
drivers/usb/chipidea/ci_hdrc_tegra.c | 24 +++++++++++++++++++++++-
1 file changed, 23 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/chipidea/ci_hdrc_tegra.c b/drivers/usb/chipidea/ci_hdrc_tegra.c
index 0c9911d44ee5..29415c3a2f48 100644
--- a/drivers/usb/chipidea/ci_hdrc_tegra.c
+++ b/drivers/usb/chipidea/ci_hdrc_tegra.c
@@ -25,7 +25,7 @@ struct tegra_udc_soc_info {
};
static const struct tegra_udc_soc_info tegra_udc_soc_info = {
- .flags = CI_HDRC_REQUIRES_ALIGNED_DMA,
+ .flags = CI_HDRC_REQUIRES_ALIGNED_DMA | CI_HDRC_TEGRA_HOST,
};
static const struct of_device_id tegra_udc_of_match[] = {
@@ -63,6 +63,28 @@ static int tegra_udc_probe(struct platform_device *pdev)
return -EINVAL;
}
+ /* check the dual mode and warn about bad configurations */
+ switch (usb_get_dr_mode(&pdev->dev)) {
+ case USB_DR_MODE_HOST:
+ dev_dbg(&pdev->dev, "dr_mode is set to host\n");
+ udc->data.dr_mode = USB_DR_MODE_HOST;
+ break;
+
+ case USB_DR_MODE_UNKNOWN:
+ dev_warn(&pdev->dev, "dr_mode is unset or unknown, setting host mode\n");
+ udc->data.dr_mode = USB_DR_MODE_HOST;
+ break;
+
+ case USB_DR_MODE_PERIPHERAL:
+ dev_dbg(&pdev->dev, "dr_mode is set to peripheral\n");
+ udc->data.dr_mode = USB_DR_MODE_PERIPHERAL;
+ break;
+
+ case USB_DR_MODE_OTG:
+ dev_err(&pdev->dev, "dr_mode is otg, tegra-udc does not support otg at this time\n");
+ return -EINVAL;
+ }
+
udc->phy = devm_usb_get_phy_by_phandle(&pdev->dev, "nvidia,phy", 0);
if (IS_ERR(udc->phy)) {
err = PTR_ERR(udc->phy);
--
2.17.1
