Merge tag 'usb-ci-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next

Peter writes:

ENDIAN issue fix and one query controller role API is introduced.

* tag 'usb-ci-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb:
  usb: chipidea: imx: get available runtime dr mode for wakeup setting
  usb: chipidea: add query_available_role interface
  Documentation: ABI: usb: chipidea: Update Li Jun's e-mail
  usb: chipidea: udc: fix the ENDIAN issue

6 files changed, 39 insertions, 4 deletions

diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c
index 5ae16368a0c7..c39e2b615ac6 100644
--- a/drivers/usb/chipidea/ci_hdrc_imx.c
+++ b/drivers/usb/chipidea/ci_hdrc_imx.c
@@ -462,6 +462,10 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
 		if (!IS_ERR(pdata.vbus_extcon.edev) ||
 		    of_property_read_bool(np, "usb-role-switch"))
 			data->usbmisc_data->ext_vbus = 1;
+
+		/* usbmisc needs to know dr mode to choose wakeup setting */
+		data->usbmisc_data->available_role =
+			ci_hdrc_query_available_role(data->ci_pdev);
 	}
 
 	ret = imx_usbmisc_init_post(data->usbmisc_data);
diff --git a/drivers/usb/chipidea/ci_hdrc_imx.h b/drivers/usb/chipidea/ci_hdrc_imx.h
index 727d02b6dbd3..99f846119c00 100644
--- a/drivers/usb/chipidea/ci_hdrc_imx.h
+++ b/drivers/usb/chipidea/ci_hdrc_imx.h
@@ -25,6 +25,7 @@ struct imx_usbmisc_data {
 	unsigned int ext_id:1; /* ID from exteranl event */
 	unsigned int ext_vbus:1; /* Vbus from exteranl event */
 	struct usb_phy *usb_phy;
+	enum usb_dr_mode available_role; /* runtime usb dr mode */
 };
 
 int imx_usbmisc_init(struct imx_usbmisc_data *data);
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 5c2de8185097..aa40e510b806 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -878,6 +878,33 @@ void ci_hdrc_remove_device(struct platform_device *pdev)
 }
 EXPORT_SYMBOL_GPL(ci_hdrc_remove_device);
 
+/**
+ * ci_hdrc_query_available_role: get runtime available operation mode
+ *
+ * The glue layer can get current operation mode (host/peripheral/otg)
+ * This function should be called after ci core device has created.
+ *
+ * @pdev: the platform device of ci core.
+ *
+ * Return runtime usb_dr_mode.
+ */
+enum usb_dr_mode ci_hdrc_query_available_role(struct platform_device *pdev)
+{
+	struct ci_hdrc *ci = platform_get_drvdata(pdev);
+
+	if (!ci)
+		return USB_DR_MODE_UNKNOWN;
+	if (ci->roles[CI_ROLE_HOST] && ci->roles[CI_ROLE_GADGET])
+		return USB_DR_MODE_OTG;
+	else if (ci->roles[CI_ROLE_HOST])
+		return USB_DR_MODE_HOST;
+	else if (ci->roles[CI_ROLE_GADGET])
+		return USB_DR_MODE_PERIPHERAL;
+	else
+		return USB_DR_MODE_UNKNOWN;
+}
+EXPORT_SYMBOL_GPL(ci_hdrc_query_available_role);
+
 static inline void ci_role_destroy(struct ci_hdrc *ci)
 {
 	ci_hdrc_gadget_destroy(ci);
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 6f173de1a5c1..60ea932afe2b 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -487,9 +487,10 @@ static void ci_add_buffer_entry(struct td_node *node, struct scatterlist *s)
 	int empty_td_slot_index = (CI_MAX_BUF_SIZE - node->td_remaining_size)
 			/ CI_HDRC_PAGE_SIZE;
 	int i;
+	u32 token;
 
-	node->ptr->token +=
-		cpu_to_le32(sg_dma_len(s) << __ffs(TD_TOTAL_BYTES));
+	token = le32_to_cpu(node->ptr->token) + (sg_dma_len(s) << __ffs(TD_TOTAL_BYTES));
+	node->ptr->token = cpu_to_le32(token);
 
 	for (i = empty_td_slot_index; i < TD_PAGE_COUNT; i++) {
 		u32 page = (u32) sg_dma_address(s) +
diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c
index 8a8e7ad928a6..322e4de6b24a 100644
--- a/drivers/usb/chipidea/usbmisc_imx.c
+++ b/drivers/usb/chipidea/usbmisc_imx.c
@@ -367,10 +367,10 @@ static u32 usbmisc_wakeup_setting(struct imx_usbmisc_data *data)
 {
 	u32 wakeup_setting = MX6_USB_OTG_WAKEUP_BITS;
 
-	if (data->ext_id)
+	if (data->ext_id || data->available_role != USB_DR_MODE_OTG)
 		wakeup_setting &= ~MX6_BM_ID_WAKEUP;
 
-	if (data->ext_vbus)
+	if (data->ext_vbus || data->available_role == USB_DR_MODE_HOST)
 		wakeup_setting &= ~MX6_BM_VBUS_WAKEUP;
 
 	return wakeup_setting;
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index 54167a2d28ea..025b41687ce9 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -99,5 +99,7 @@ struct platform_device *ci_hdrc_add_device(struct device *dev,
 			struct ci_hdrc_platform_data *platdata);
 /* Remove ci hdrc device */
 void ci_hdrc_remove_device(struct platform_device *pdev);
+/* Get current available role */
+enum usb_dr_mode ci_hdrc_query_available_role(struct platform_device *pdev);
 
 #endif