linux-kernel - [PATCH v10 13/55] dt-bindings: input: atmel: add suspend mode support

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Message-ID: <20200331105051.58896-14-jiada_wang@mentor.com>
Date:   Tue, 31 Mar 2020 03:50:09 -0700
From:   Jiada Wang <jiada_wang@...tor.com>
To:     <nick@...anahar.org>, <dmitry.torokhov@...il.com>,
        <jikos@...nel.org>, <benjamin.tissoires@...hat.com>,
        <bsz@...ihalf.com>
CC:     <linux-input@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <erosca@...adit-jv.com>, <Andrew_Gabbasov@...tor.com>,
        <jiada_wang@...tor.com>
Subject: [PATCH v10 13/55] dt-bindings: input: atmel: add suspend mode support

Add suspend mode support for atmel touchscreen driver

Signed-off-by: Jiada Wang <jiada_wang@...tor.com>
---
 .../bindings/input/atmel,maxtouch.txt         |  9 ++++++++
 MAINTAINERS                                   |  1 +
 include/dt-bindings/input/atmel_mxt_ts.h      | 23 +++++++++++++++++++
 3 files changed, 33 insertions(+)
 create mode 100644 include/dt-bindings/input/atmel_mxt_ts.h

diff --git a/Documentation/devicetree/bindings/input/atmel,maxtouch.txt b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt
index c88919480d37..0307e7f7bb43 100644
--- a/Documentation/devicetree/bindings/input/atmel,maxtouch.txt
+++ b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt
@@ -31,6 +31,15 @@ Optional properties for main touchpad device:
 
 - reset-gpios: GPIO specifier for the touchscreen's reset pin (active low)
 
+- atmel,suspend-mode: Select method used to suspend:
+    MXT_SUSPEND_DEEP_SLEEP - use T7 to suspend the device into deep sleep
+    MXT_SUSPEND_T9_CTRL - use T9.CTRL to turn off touch processing
+    MXT_SUSPEND_REGULATOR - use regulators to power down device during suspend
+    Definitions are in <dt-bindings/input/atmel_mxt_ts.h>.
+
+- vdd: Required supply regulator when MXT_SUSPEND_REGULATOR is used to suspend
+- avdd: Required supply regulator when MXT_SUSPEND_REGULATOR is used to suspend
+
 Example:
 
 	touch@4b {
diff --git a/MAINTAINERS b/MAINTAINERS
index e48ab79879ac..350ae664e6f0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2873,6 +2873,7 @@ T:	git git://github.com/ndyer/linux.git
 S:	Maintained
 F:	Documentation/devicetree/bindings/input/atmel,maxtouch.txt
 F:	drivers/input/touchscreen/atmel_mxt_ts.c
+F:	include/dt-bindings/input/atmel_mxt_ts.h
 
 ATMEL WIRELESS DRIVER
 M:	Simon Kelley <simon@...kelleys.org.uk>
diff --git a/include/dt-bindings/input/atmel_mxt_ts.h b/include/dt-bindings/input/atmel_mxt_ts.h
new file mode 100644
index 000000000000..41ed0f8111aa
--- /dev/null
+++ b/include/dt-bindings/input/atmel_mxt_ts.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Atmel maXTouch Touchscreen driver
+ *
+ * Copyright (C) 2015 Atmel Corporation
+ * Author: Nick Dyer <nick.dyer@...ev.co.uk>
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __DT_BINDINGS_ATMEL_MXT_TS_H
+#define __DT_BINDINGS_ATMEL_MXT_TS_H
+
+enum mxt_suspend_mode {
+	MXT_SUSPEND_DEEP_SLEEP = 0,
+	MXT_SUSPEND_T9_CTRL = 1,
+	MXT_SUSPEND_REGULATOR = 2,
+};
+
+#endif /* __DT_BINDINGS_ATMEL_MXT_TS_H */
-- 
2.17.1