diff options
Diffstat (limited to 'target/linux/ar71xx/patches-4.9/930-chipidea-pullup.patch')
| -rw-r--r-- | target/linux/ar71xx/patches-4.9/930-chipidea-pullup.patch | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-4.9/930-chipidea-pullup.patch b/target/linux/ar71xx/patches-4.9/930-chipidea-pullup.patch new file mode 100644 index 0000000000..ce31595d96 --- /dev/null +++ b/target/linux/ar71xx/patches-4.9/930-chipidea-pullup.patch @@ -0,0 +1,72 @@ +--- a/drivers/usb/chipidea/ci.h ++++ b/drivers/usb/chipidea/ci.h +@@ -199,6 +199,7 @@ struct hw_bank { + * @in_lpm: if the core in low power mode + * @wakeup_int: if wakeup interrupt occur + * @rev: The revision number for controller ++ * @dp_always_pullup: keep dp always pullup at device mode + */ + struct ci_hdrc { + struct device *dev; +@@ -248,6 +249,7 @@ struct ci_hdrc { + bool in_lpm; + bool wakeup_int; + enum ci_revision rev; ++ bool dp_always_pullup; + }; + + static inline struct ci_role_driver *ci_role(struct ci_hdrc *ci) +--- a/drivers/usb/chipidea/core.c ++++ b/drivers/usb/chipidea/core.c +@@ -839,7 +839,7 @@ static inline void ci_role_destroy(struc + { + ci_hdrc_gadget_destroy(ci); + ci_hdrc_host_destroy(ci); +- if (ci->is_otg) ++ if (!ci->dp_always_pullup && ci->roles[CI_ROLE_GADGET]) + ci_hdrc_otg_destroy(ci); + } + +@@ -890,6 +890,9 @@ static int ci_hdrc_probe(struct platform + ci->supports_runtime_pm = !!(ci->platdata->flags & + CI_HDRC_SUPPORTS_RUNTIME_PM); + ++ ci->dp_always_pullup = !!(ci->platdata->flags & ++ CI_HDRC_DP_ALWAYS_PULLUP); ++ + ret = hw_device_init(ci, base); + if (ret < 0) { + dev_err(dev, "can't initialize hardware\n"); +@@ -955,7 +958,7 @@ static int ci_hdrc_probe(struct platform + goto deinit_phy; + } + +- if (ci->is_otg && ci->roles[CI_ROLE_GADGET]) { ++ if (!ci->dp_always_pullup && ci->roles[CI_ROLE_GADGET]) { + ret = ci_hdrc_otg_init(ci); + if (ret) { + dev_err(dev, "init otg fails, ret = %d\n", ret); +--- a/drivers/usb/chipidea/otg.c ++++ b/drivers/usb/chipidea/otg.c +@@ -131,8 +131,10 @@ enum ci_role ci_otg_role(struct ci_hdrc + + void ci_handle_vbus_change(struct ci_hdrc *ci) + { +- if (!ci->is_otg) ++ if (ci->dp_always_pullup) { ++ usb_gadget_vbus_connect(&ci->gadget); + return; ++ } + + if (hw_read_otgsc(ci, OTGSC_BSV) && !ci->vbus_active) + usb_gadget_vbus_connect(&ci->gadget); +--- a/include/linux/usb/chipidea.h ++++ b/include/linux/usb/chipidea.h +@@ -57,6 +57,7 @@ struct ci_hdrc_platform_data { + #define CI_HDRC_OVERRIDE_AHB_BURST BIT(9) + #define CI_HDRC_OVERRIDE_TX_BURST BIT(10) + #define CI_HDRC_OVERRIDE_RX_BURST BIT(11) ++#define CI_HDRC_DP_ALWAYS_PULLUP BIT(12) + enum usb_dr_mode dr_mode; + #define CI_HDRC_CONTROLLER_RESET_EVENT 0 + #define CI_HDRC_CONTROLLER_STOPPED_EVENT 1 |