linux-kernel - [PATCH] iio: imu: bmi270: Match ACPI ID found on newer GPD firmware

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Message-Id: <20250206-bmi270-gpd-acpi-v1-1-db638cfb9a3c@gmail.com>
Date: Thu, 06 Feb 2025 15:09:42 +0800
From: Cryolitia PukNgae via B4 Relay <devnull+Cryolitia.gmail.com@...nel.org>
To: Alex Lanzano <lanzano.alex@...il.com>, 
 Jonathan Cameron <jic23@...nel.org>, Lars-Peter Clausen <lars@...afoo.de>
Cc: linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Yao Zi <ziyao@...root.org>, Cryolitia PukNgae <Cryolitia@...il.com>
Subject: [PATCH] iio: imu: bmi270: Match ACPI ID found on newer GPD
 firmware

From: Cryolitia PukNgae <Cryolitia@...il.com>

Some GPD devices ship a buggy firmware that describes on-device BMI260 with ACPI ID "BMI0160". Since this is fixed in BIOS update v0.40[1], let's match the correct ID to detect the device. The buggy ID "BMI0160" is kept as well to maintain compatibility with older firmwares.

---
Some GPD devices ship a buggy firmware that describes on-device BMI260 with ACPI ID "BMI0160". Since this is fixed in BIOS update v0.40[1], let's match the correct ID to detect the device. The buggy ID "BMI0160" is kept as well to maintain compatibility with older firmwares.

Link: http://download.softwincn.com/WIN%20Max%202024/Max2-7840-BIOS-V0.41.zip

[1]. See the update nodes in the archive file above

Signed-off-by: Cryolitia PukNgae <Cryolitia@...il.com>
---
 drivers/iio/imu/bmi270/bmi270_i2c.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/iio/imu/bmi270/bmi270_i2c.c b/drivers/iio/imu/bmi270/bmi270_i2c.c
index 44699ab589097eaa0eec5f2172245496ed031185..f66ae01e301df24f1e563e059da8cc531fc173eb 100644
--- a/drivers/iio/imu/bmi270/bmi270_i2c.c
+++ b/drivers/iio/imu/bmi270/bmi270_i2c.c
@@ -40,6 +40,8 @@ static const struct i2c_device_id bmi270_i2c_id[] = {
 static const struct acpi_device_id bmi270_acpi_match[] = {
 	/* GPD Win Mini, Aya Neo AIR Pro, OXP Mini Pro, etc. */
 	{ "BMI0160",  (kernel_ulong_t)&bmi260_chip_info },
+	/* GPD Win Max 2 2023(sincice BIOS v0.40), etc. */
+	{ "BMI0260",  (kernel_ulong_t)&bmi260_chip_info },
 	{ }
 };
 

---
base-commit: ffd294d346d185b70e28b1a28abe367bbfe53c04
change-id: 20250206-bmi270-gpd-acpi-de4d12bce567

Best regards,
-- 
Cryolitia PukNgae <Cryolitia@...il.com>