linux-kernel - [PATCH] Input: cros_ec_keyb: Add support for a front proximity switch

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Date:   Fri,  4 Dec 2020 16:47:09 -0800
From:   Stephen Boyd <swboyd@...omium.org>
To:     Enric Balletbo i Serra <enric.balletbo@...labora.com>
Cc:     linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Benson Leung <bleung@...omium.org>,
        Guenter Roeck <groeck@...omium.org>
Subject: [PATCH] Input: cros_ec_keyb: Add support for a front proximity switch

Some cros ECs support a front proximity MKBP event via
'EC_MKBP_FRONT_PROXIMITY'. Map this to the 'SW_FRONT_PROXIMITY' input
event code so it can be reported up to userspace.

Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: Benson Leung <bleung@...omium.org>
Cc: Guenter Roeck <groeck@...omium.org>
Signed-off-by: Stephen Boyd <swboyd@...omium.org>
---
 drivers/input/keyboard/cros_ec_keyb.c          | 5 +++++
 include/linux/platform_data/cros_ec_commands.h | 1 +
 2 files changed, 6 insertions(+)

diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c
index 15d17c717081..9d05e9192a10 100644
--- a/drivers/input/keyboard/cros_ec_keyb.c
+++ b/drivers/input/keyboard/cros_ec_keyb.c
@@ -107,6 +107,11 @@ static const struct cros_ec_bs_map cros_ec_keyb_bs[] = {
 		.code		= SW_TABLET_MODE,
 		.bit		= EC_MKBP_TABLET_MODE,
 	},
+	{
+		.ev_type	= EV_SW,
+		.code		= SW_FRONT_PROXIMITY,
+		.bit		= EC_MKBP_FRONT_PROXIMITY,
+	},
 };
 
 /*
diff --git a/include/linux/platform_data/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h
index a3a9a878415f..d9dc5e30e59e 100644
--- a/include/linux/platform_data/cros_ec_commands.h
+++ b/include/linux/platform_data/cros_ec_commands.h
@@ -3455,6 +3455,7 @@ struct ec_response_get_next_event_v1 {
 #define EC_MKBP_LID_OPEN	0
 #define EC_MKBP_TABLET_MODE	1
 #define EC_MKBP_BASE_ATTACHED	2
+#define EC_MKBP_FRONT_PROXIMITY	3
 
 /* Run keyboard factory test scanning */
 #define EC_CMD_KEYBOARD_FACTORY_TEST 0x0068

base-commit: b65054597872ce3aefbc6a666385eabdf9e288da
-- 
https://chromeos.dev