linux-kernel - [RFC PATCH v2 2/7] typec: tcpm: Add ADO header for Alert message handling

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Date:   Tue, 14 Nov 2017 11:44:43 +0000
From:   Adam Thomson <Adam.Thomson.Opensource@...semi.com>
To:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sebastian Reichel <sre@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        Yueyao Zhu <yueyao.zhu@...il.com>,
        Rui Miguel Silva <rmfrfs@...il.com>
CC:     <linux-usb@...r.kernel.org>, <linux-pm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <support.opensource@...semi.com>
Subject: [RFC PATCH v2 2/7] 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@...semi.com>
---
 include/linux/usb/pd_ado.h | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 include/linux/usb/pd_ado.h

diff --git a/include/linux/usb/pd_ado.h b/include/linux/usb/pd_ado.h
new file mode 100644
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@...semi.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 */
-- 
1.9.1