From: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Date: Mon, 30 Dec 2019 17:26:04 +0300
Subject: usb: pd: Add definitions for the Enter_USB message
Git-commit: 7823905de0c6c319995d710bb67f761681dc7e4e
Patch-mainline: v5.6-rc1
References: jsc#SLE-13918
Version 2.0 of the USB Power Delivery Specification R3.0
defines a new message called Enter_USB, which is made with
USB4 in mind. Enter_USB message is in practice the same as
the Enter Mode command (used when entering alternate modes)
that just needs to be used when entering USB4 mode.
The message does also support entering USB 2.0 or USB 3.2
mode instead of USB4 mode, but it is only required with
USB4. I.e. with USB2 and USB3 Enter_USB message is optional.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20191230142611.24921-9-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
include/linux/usb/pd.h | 33 ++++++++++++++++++++++++++++++++-
1 file changed, 32 insertions(+), 1 deletion(-)
diff --git a/include/linux/usb/pd.h b/include/linux/usb/pd.h
index 145c38e351c2..a665d7f21142 100644
--- a/include/linux/usb/pd.h
+++ b/include/linux/usb/pd.h
@@ -45,7 +45,8 @@ enum pd_data_msg_type {
PD_DATA_BATT_STATUS = 5,
PD_DATA_ALERT = 6,
PD_DATA_GET_COUNTRY_INFO = 7,
- /* 8-14 Reserved */
+ PD_DATA_ENTER_USB = 8,
+ /* 9-14 Reserved */
PD_DATA_VENDOR_DEF = 15,
/* 16-31 Reserved */
};
@@ -418,6 +419,36 @@ static inline unsigned int rdo_max_power(u32 rdo)
return ((rdo >> RDO_BATT_MAX_PWR_SHIFT) & RDO_PWR_MASK) * 250;
}
+/* Enter_USB Data Object */
+#define EUDO_USB_MODE_MASK GENMASK(30, 28)
+#define EUDO_USB_MODE_SHIFT 28
+#define EUDO_USB_MODE_USB2 0
+#define EUDO_USB_MODE_USB3 1
+#define EUDO_USB_MODE_USB4 2
+#define EUDO_USB4_DRD BIT(26)
+#define EUDO_USB3_DRD BIT(25)
+#define EUDO_CABLE_SPEED_MASK GENMASK(23, 21)
+#define EUDO_CABLE_SPEED_SHIFT 21
+#define EUDO_CABLE_SPEED_USB2 0
+#define EUDO_CABLE_SPEED_USB3_GEN1 1
+#define EUDO_CABLE_SPEED_USB4_GEN2 2
+#define EUDO_CABLE_SPEED_USB4_GEN3 3
+#define EUDO_CABLE_TYPE_MASK GENMASK(20, 19)
+#define EUDO_CABLE_TYPE_SHIFT 19
+#define EUDO_CABLE_TYPE_PASSIVE 0
+#define EUDO_CABLE_TYPE_RE_TIMER 1
+#define EUDO_CABLE_TYPE_RE_DRIVER 2
+#define EUDO_CABLE_TYPE_OPTICAL 3
+#define EUDO_CABLE_CURRENT_MASK GENMASK(18, 17)
+#define EUDO_CABLE_CURRENT_SHIFT 17
+#define EUDO_CABLE_CURRENT_NOTSUPP 0
+#define EUDO_CABLE_CURRENT_3A 2
+#define EUDO_CABLE_CURRENT_5A 3
+#define EUDO_PCIE_SUPPORT BIT(16)
+#define EUDO_DP_SUPPORT BIT(15)
+#define EUDO_TBT_SUPPORT BIT(14)
+#define EUDO_HOST_PRESENT BIT(13)
+
/* USB PD timers and counters */
#define PD_T_NO_RESPONSE 5000 /* 4.5 - 5.5 seconds */
#define PD_T_DB_DETECT 10000 /* 10 - 15 seconds */