diff options
| -rw-r--r-- | src/include/device/usbc_mux.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/include/device/usbc_mux.h b/src/include/device/usbc_mux.h new file mode 100644 index 0000000000..e395d2dd62 --- /dev/null +++ b/src/include/device/usbc_mux.h @@ -0,0 +1,69 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +/* struct to hold all USB-C mux related variables */ +struct usbc_mux_info { + bool dp; /* DP connected */ + bool usb; /* USB connected */ + bool cable; /* 0 = Passive cable, 1 = Active cable */ + bool polarity; /* Polarity of connected device. 0 = Normal, 1 = Flipped */ + bool hpd_lvl; /* HPD Level assert */ + bool hpd_irq; /* HPD IRQ assert */ + bool ufp; /* 0 = DFP, 1 = UFP */ + bool dbg_acc; /* Debug Accessory. 0 = Disable, 1 = Enable */ + uint8_t dp_pin_mode; /* DP pin assignments + 0h: Reserved. + 1h: Pin Assignment A. + 2h: Pin Assignment B. + 3h: Pin Assignment C. + 4h: Pin Assignment D. + 5h: Pin Assignment E. + 6h: Pin Assignment F. + 7-Fh: Reserved. */ +}; +struct usbc_mux_ops { + /* + * Get mux information on a given port. + * + * Return value: + * -1 = error + * 0 = success + */ + int (*get_mux_info)(int port, struct usbc_mux_info *info); +}; + +struct usbc_dp_ops { + /* + * Wait up to `timeout_ms` for DP connection to be ready on any available port. + * + * Return value: + * -1 = error + * 0 = no DP connection + * <bit mask> = mask for ports that are ready in DP mode. + */ + int (*wait_for_connection)(long timeout_ms); + + /* + * Enter DP mode on a given `port`. + * + * Return value: + * -1 = error + * 0 = success + */ + int (*enter_dp_mode)(int port); + + /* + * Wait up to `timeout_ms` for HPD on a given port. + * + * Return value: + * -1 = timeout + * 0 = success + */ + int (*wait_for_hpd)(int port, long timeout_ms); +}; + +struct usbc_ops { + struct usbc_mux_ops mux_ops; + struct usbc_dp_ops dp_ops; +}; + +const struct usbc_ops *usbc_get_ops(void); |