typec: tcpm: Add ADO header for Alert message handling

This commit adds a header providing definitions for handling Alert
messages. Currently the header only focuses on handling incoming
alerts.

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/include/linux/usb/pd_ado.h b/include/linux/usb/pd_ado.h
new file mode 100644 (file)
index 0000000..9aa1cf3
--- /dev/null
+++ b/include/linux/usb/pd_ado.h
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2017 Dialog Semiconductor
+ *
+ * Author: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
+ */
+
+#ifndef __LINUX_USB_PD_ADO_H
+#define __LINUX_USB_PD_ADO_H
+
+/* ADO : Alert Data Object */
+#define USB_PD_ADO_TYPE_SHIFT                  24
+#define USB_PD_ADO_TYPE_MASK                   0xff
+#define USB_PD_ADO_FIXED_BATT_SHIFT            20
+#define USB_PD_ADO_FIXED_BATT_MASK             0xf
+#define USB_PD_ADO_HOT_SWAP_BATT_SHIFT         16
+#define USB_PD_ADO_HOT_SWAP_BATT_MASK          0xf
+
+#define USB_PD_ADO_TYPE_BATT_STATUS_CHANGE     BIT(1)
+#define USB_PD_ADO_TYPE_OCP                    BIT(2)
+#define USB_PD_ADO_TYPE_OTP                    BIT(3)
+#define USB_PD_ADO_TYPE_OP_COND_CHANGE         BIT(4)
+#define USB_PD_ADO_TYPE_SRC_INPUT_CHANGE       BIT(5)
+#define USB_PD_ADO_TYPE_OVP                    BIT(6)
+
+static inline unsigned int usb_pd_ado_type(u32 ado)
+{
+       return (ado >> USB_PD_ADO_TYPE_SHIFT) & USB_PD_ADO_TYPE_MASK;
+}
+
+static inline unsigned int usb_pd_ado_fixed_batt(u32 ado)
+{
+       return (ado >> USB_PD_ADO_FIXED_BATT_SHIFT) &
+              USB_PD_ADO_FIXED_BATT_MASK;
+}
+
+static inline unsigned int usb_pd_ado_hot_swap_batt(u32 ado)
+{
+       return (ado >> USB_PD_ADO_HOT_SWAP_BATT_SHIFT) &
+              USB_PD_ADO_HOT_SWAP_BATT_MASK;
+}
+#endif /* __LINUX_USB_PD_ADO_H */