linux-kernel - [PATCH 1/3] Input: goodix - add option to disable firmware loading

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Message-Id: <20201029170313.25529-2-andrej.valek@siemens.com>
Date:   Thu, 29 Oct 2020 18:03:11 +0100
From:   Andrej Valek <andrej.valek@...mens.com>
To:     nick@...anahar.org, hadess@...ess.net, dmitry.torokhov@...il.com
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Andrej Valek <andrej.valek@...mens.com>
Subject: [PATCH 1/3] Input: goodix - add option to disable firmware loading

Firmware file loadind for GT911 controller takes too much time (~60s).
There is no check that configuration is the same which is already present.
This happens always during boot, which makes touchscreen unusable.

Add there an option to prevent firmware file loading, but keep it enabled
by default.

Signed-off-by: Andrej Valek <andrej.valek@...mens.com>
---
 drivers/input/touchscreen/goodix.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/input/touchscreen/goodix.c b/drivers/input/touchscreen/goodix.c
index 02c75ea385e08..44336ecd2acdf 100644
--- a/drivers/input/touchscreen/goodix.c
+++ b/drivers/input/touchscreen/goodix.c
@@ -941,7 +941,9 @@ static int goodix_get_gpio_config(struct goodix_ts_data *ts)
 	default:
 		if (ts->gpiod_int && ts->gpiod_rst) {
 			ts->reset_controller_at_probe = true;
-			ts->load_cfg_from_disk = true;
+			/* Prevent cfg loading for each start */
+			ts->load_cfg_from_disk = !device_property_read_bool(dev,
+						 "touchscreen-do-not-load-fw");
 			ts->irq_pin_access_method = IRQ_PIN_ACCESS_GPIO;
 		}
 	}
-- 
2.20.1