target/linux/ar71xx/patches-4.9/930-chipidea-pullup.patch

   1 --- a/drivers/usb/chipidea/ci.h
   2 +++ b/drivers/usb/chipidea/ci.h
   3 @@ -199,6 +199,7 @@ struct hw_bank {
   4   * @in_lpm: if the core in low power mode
   5   * @wakeup_int: if wakeup interrupt occur
   6   * @rev: The revision number for controller
   7 + * @dp_always_pullup: keep dp always pullup at device mode
   8   */
   9  struct ci_hdrc {
  10         struct device                   *dev;
  11 @@ -248,6 +249,7 @@ struct ci_hdrc {
  12         bool                            in_lpm;
  13         bool                            wakeup_int;
  14         enum ci_revision                rev;
  15 +       bool                            dp_always_pullup;
  16  };
  17
  18  static inline struct ci_role_driver *ci_role(struct ci_hdrc *ci)
  19 --- a/drivers/usb/chipidea/core.c
  20 +++ b/drivers/usb/chipidea/core.c
  21 @@ -839,7 +839,7 @@ static inline void ci_role_destroy(struc
  22  {
  23         ci_hdrc_gadget_destroy(ci);
  24         ci_hdrc_host_destroy(ci);
  25 -       if (ci->is_otg && ci->roles[CI_ROLE_GADGET])
  26 +       if (!ci->dp_always_pullup && ci->roles[CI_ROLE_GADGET])
  27                 ci_hdrc_otg_destroy(ci);
  28  }
  29
  30 @@ -890,6 +890,9 @@ static int ci_hdrc_probe(struct platform
  31         ci->supports_runtime_pm = !!(ci->platdata->flags &
  32                 CI_HDRC_SUPPORTS_RUNTIME_PM);
  33
  34 +       ci->dp_always_pullup = !!(ci->platdata->flags &
  35 +                                        CI_HDRC_DP_ALWAYS_PULLUP);
  36 +
  37         ret = hw_device_init(ci, base);
  38         if (ret < 0) {
  39                 dev_err(dev, "can't initialize hardware\n");
  40 @@ -963,7 +966,7 @@ static int ci_hdrc_probe(struct platform
  41                 goto deinit_gadget;
  42         }
  43
  44 -       if (ci->is_otg && ci->roles[CI_ROLE_GADGET]) {
  45 +       if (!ci->dp_always_pullup && ci->roles[CI_ROLE_GADGET]) {
  46                 ret = ci_hdrc_otg_init(ci);
  47                 if (ret) {
  48                         dev_err(dev, "init otg fails, ret = %d\n", ret);
  49 --- a/drivers/usb/chipidea/otg.c
  50 +++ b/drivers/usb/chipidea/otg.c
  51 @@ -131,8 +131,10 @@ enum ci_role ci_otg_role(struct ci_hdrc
  52
  53  void ci_handle_vbus_change(struct ci_hdrc *ci)
  54  {
  55 -       if (!ci->is_otg)
  56 +       if (ci->dp_always_pullup) {
  57 +               usb_gadget_vbus_connect(&ci->gadget);
  58                 return;
  59 +       }
  60
  61         if (hw_read_otgsc(ci, OTGSC_BSV) && !ci->vbus_active)
  62                 usb_gadget_vbus_connect(&ci->gadget);
  63 --- a/include/linux/usb/chipidea.h
  64 +++ b/include/linux/usb/chipidea.h
  65 @@ -57,6 +57,7 @@ struct ci_hdrc_platform_data {
  66  #define CI_HDRC_OVERRIDE_AHB_BURST     BIT(9)
  67  #define CI_HDRC_OVERRIDE_TX_BURST      BIT(10)
  68  #define CI_HDRC_OVERRIDE_RX_BURST      BIT(11)
  69 +#define CI_HDRC_DP_ALWAYS_PULLUP BIT(12)
  70         enum usb_dr_mode        dr_mode;
  71  #define CI_HDRC_CONTROLLER_RESET_EVENT         0
  72  #define CI_HDRC_CONTROLLER_STOPPED_EVENT       1