linux-kernel - [PATCH 1/5] Input: omap4-keypad - disable unused long interrupts

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Date:   Sun, 10 Jan 2021 21:05:25 +0200
From:   Tony Lindgren <tony@...mide.com>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-omap@...r.kernel.org,
        Arthur Demchenkov <spinal.by@...il.com>,
        Carl Philipp Klemm <philipp@...s.xyz>,
        Merlijn Wajer <merlijn@...zup.org>,
        Pavel Machek <pavel@....cz>, ruleh <ruleh@....de>,
        Sebastian Reichel <sre@...nel.org>
Subject: [PATCH 1/5] Input: omap4-keypad - disable unused long interrupts

We are not using the long events and they produce extra interrupts.
Let's not enable them at all.

Note that also the v3.0.8 Linux Android kernel has long interrupts
disabled.

Cc: Arthur Demchenkov <spinal.by@...il.com>
Cc: Carl Philipp Klemm <philipp@...s.xyz>
Cc: Merlijn Wajer <merlijn@...zup.org>
Cc: Pavel Machek <pavel@....cz>
Cc: ruleh <ruleh@....de>
Cc: Sebastian Reichel <sre@...nel.org>
Signed-off-by: Tony Lindgren <tony@...mide.com>
---
 drivers/input/keyboard/omap4-keypad.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/input/keyboard/omap4-keypad.c b/drivers/input/keyboard/omap4-keypad.c
--- a/drivers/input/keyboard/omap4-keypad.c
+++ b/drivers/input/keyboard/omap4-keypad.c
@@ -176,10 +176,9 @@ static int omap4_keypad_open(struct input_dev *input)
 	kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS,
 			 kbd_read_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS));
 	kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQENABLE,
-			OMAP4_DEF_IRQENABLE_EVENTEN |
-				OMAP4_DEF_IRQENABLE_LONGKEY);
+			OMAP4_DEF_IRQENABLE_EVENTEN);
 	kbd_writel(keypad_data, OMAP4_KBD_WAKEUPENABLE,
-			OMAP4_DEF_WUP_EVENT_ENA | OMAP4_DEF_WUP_LONG_KEY_ENA);
+			OMAP4_DEF_WUP_EVENT_ENA);
 
 	enable_irq(keypad_data->irq);
 
-- 
2.30.0