usb: chipidea: add CI_HDRC_FORCE_VBUS_ACTIVE_ALWAYS flag

Adding CI_HDRC_FORCE_VBUS_ACTIVE_ALWAYS flag to modify the vbus_active
parameter to active in case the ChipIdea USB IP role is device-only and
there is no otgsc register.

Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/20231017195903.1665260-2-tmaimon77@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/chipidea/otg.c b/drivers/usb/chipidea/otg.c
index f5490f2a5b6bca6b725c596d7536c2b548547d4b..647e98f4e35110fd587fc8e2757eca266adf9411 100644 (file)
--- a/drivers/usb/chipidea/otg.c
+++ b/drivers/usb/chipidea/otg.c
@@ -130,8 +130,11 @@ enum ci_role ci_otg_role(struct ci_hdrc *ci)
 
 void ci_handle_vbus_change(struct ci_hdrc *ci)
 {
-       if (!ci->is_otg)
+       if (!ci->is_otg) {
+               if (ci->platdata->flags & CI_HDRC_FORCE_VBUS_ACTIVE_ALWAYS)
+                       usb_gadget_vbus_connect(&ci->gadget);
                return;
+       }
 
        if (hw_read_otgsc(ci, OTGSC_BSV) && !ci->vbus_active)
                usb_gadget_vbus_connect(&ci->gadget);

diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index 0b4f2d5faa080dfd122a051d8fde6b706fe6c61f..5a7f96684ea226e2de0512e7f3246f1712dc6cd7 100644 (file)
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -64,6 +64,7 @@ struct ci_hdrc_platform_data {
 #define CI_HDRC_PMQOS                  BIT(15)
 #define CI_HDRC_PHY_VBUS_CONTROL       BIT(16)
 #define CI_HDRC_HAS_PORTSC_PEC_MISSED  BIT(17)
+#define CI_HDRC_FORCE_VBUS_ACTIVE_ALWAYS       BIT(18)
        enum usb_dr_mode        dr_mode;
 #define CI_HDRC_CONTROLLER_RESET_EVENT         0
 #define CI_HDRC_CONTROLLER_STOPPED_EVENT       1