usb: chipidea: set usb otg capabilities

Init and update otg capabilities by DT, set gadget's otg capabilities
accordingly.

Acked-by: Peter Chen <peter.chen@freescale.com>
Reviewed-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Li Jun <jun.li@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

3 files changed, 22 insertions, 1 deletions

diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 74fea4fa41b1..1e6d5f0c18f2 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -560,6 +560,8 @@ static irqreturn_t ci_irq(int irq, void *data)
 static int ci_get_platdata(struct device *dev,
                 struct ci_hdrc_platform_data *platdata)
 {
+        int ret;
+
         if (!platdata->phy_mode)
                 platdata->phy_mode = of_usb_get_phy_mode(dev->of_node);
 
@@ -588,6 +590,19 @@ static int ci_get_platdata(struct device *dev,
                                 of_usb_host_tpl_support(dev->of_node);
         }
 
+        if (platdata->dr_mode == USB_DR_MODE_OTG) {
+                /* We can support HNP and SRP of OTG 2.0 */
+                platdata->ci_otg_caps.otg_rev = 0x0200;
+                platdata->ci_otg_caps.hnp_support = true;
+                platdata->ci_otg_caps.srp_support = true;
+
+                /* Update otg capabilities by DT properties */
+                ret = of_usb_update_otg_caps(dev->of_node,
+                                        &platdata->ci_otg_caps);
+                if (ret)
+                        return ret;
+        }
+
         if (of_usb_get_maximum_speed(dev->of_node) == USB_SPEED_FULL)
                 platdata->flags |= CI_HDRC_FORCE_FULLSPEED;
 
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 764f668d45a9..b7cca3e597bf 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -1827,6 +1827,7 @@ static irqreturn_t udc_irq(struct ci_hdrc *ci)
 static int udc_start(struct ci_hdrc *ci)
 {
         struct device *dev = ci->dev;
+        struct usb_otg_caps *otg_caps = &ci->platdata->ci_otg_caps;
         int retval = 0;
 
         spin_lock_init(&ci->lock);
@@ -1834,8 +1835,12 @@ static int udc_start(struct ci_hdrc *ci)
         ci->gadget.ops          = &usb_gadget_ops;
         ci->gadget.speed        = USB_SPEED_UNKNOWN;
         ci->gadget.max_speed    = USB_SPEED_HIGH;
-        ci->gadget.is_otg       = ci->is_otg ? 1 : 0;
         ci->gadget.name         = ci->platdata->name;
+        ci->gadget.otg_caps     = otg_caps;
+
+        if (otg_caps->hnp_support || otg_caps->srp_support ||
+                                        otg_caps->adp_support)
+                ci->gadget.is_otg = 1;
 
         INIT_LIST_HEAD(&ci->gadget.ep_list);
 
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index ab94f78c4dd1..e10cefc721ad 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -34,6 +34,7 @@ struct ci_hdrc_platform_data {
 #define CI_HDRC_CONTROLLER_STOPPED_EVENT        1
         void    (*notify_event) (struct ci_hdrc *ci, unsigned event);
         struct regulator        *reg_vbus;
+        struct usb_otg_caps     ci_otg_caps;
         bool                    tpl_support;
 };