From: Markus Burri <markus.burri@mt.com>
To: linux-kernel@vger.kernel.org
Cc: Markus Burri <markus.burri@mt.com>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Marek Vasut <marek.vasut@gmail.com>,
linux-input@vger.kernel.org, devicetree@vger.kernel.org,
Manuel Traut <manuel.traut@mt.com>
Subject: [PATCH v3 1/7] Input: matrix_keypad - use fsleep for variable delay duration
Date: Tue, 7 Jan 2025 14:56:53 +0100 [thread overview]
Message-ID: <20250107135659.185293-2-markus.burri@mt.com> (raw)
In-Reply-To: <20250107135659.185293-1-markus.burri@mt.com>
The delay is retrieved from a device-tree property, so the duration is
variable. fsleep guesses the best delay function based on duration.
Link: https://www.kernel.org/doc/html/latest/timers/timers-howto.html
Signed-off-by: Markus Burri <markus.burri@mt.com>
---
drivers/input/keyboard/matrix_keypad.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/input/keyboard/matrix_keypad.c b/drivers/input/keyboard/matrix_keypad.c
index 2a3b3bf..5571d2e 100644
--- a/drivers/input/keyboard/matrix_keypad.c
+++ b/drivers/input/keyboard/matrix_keypad.c
@@ -68,7 +68,7 @@ static void activate_col(struct matrix_keypad *keypad, int col, bool on)
__activate_col(keypad, col, on);
if (on && keypad->col_scan_delay_us)
- udelay(keypad->col_scan_delay_us);
+ fsleep(keypad->col_scan_delay_us);
}
static void activate_all_cols(struct matrix_keypad *keypad, bool on)
--
2.39.5
next prev parent reply other threads:[~2025-01-07 14:02 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-07 13:56 [PATCH v3 0/7] Input: matrix-keypad: Various performance improvements Markus Burri
2025-01-07 13:56 ` Markus Burri [this message]
2025-01-07 19:33 ` [PATCH v3 1/7] Input: matrix_keypad - use fsleep for variable delay duration Thomas Weißschuh
2025-01-07 13:56 ` [PATCH v3 2/7] Input: matrix_keypad - add function for reading row state Markus Burri
2025-01-07 13:56 ` [PATCH v3 3/7] dt-bindings: input: matrix_keypad - convert to YAML Markus Burri
2025-01-07 19:09 ` Rob Herring
2025-01-07 13:56 ` [PATCH v3 4/7] dt-bindings: input: matrix_keypad - add missing property Markus Burri
2025-01-07 19:27 ` Rob Herring
2025-01-09 6:04 ` Dmitry Torokhov
2025-01-09 7:53 ` EXTERNAL - " Markus Burri
2025-01-08 8:34 ` Krzysztof Kozlowski
2025-01-07 13:56 ` [PATCH v3 5/7] dt-bindings: input: matrix_keypad - add settle time after enable all columns Markus Burri
2025-01-07 19:27 ` Rob Herring (Arm)
2025-01-07 13:56 ` [PATCH v3 6/7] Input: " Markus Burri
2025-01-07 13:56 ` [PATCH v3 7/7] Input: matrix_keypad - detect change during scan Markus Burri
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