linux-kernel - [PATCH v3] iio: humidity: hdc100x: Add ACPI HID table

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Message-Id: <20220128042054.2062060-1-kai.heng.feng@canonical.com>
Date:   Fri, 28 Jan 2022 12:20:51 +0800
From:   Kai-Heng Feng <kai.heng.feng@...onical.com>
To:     jic23@...nel.org, lars@...afoo.de
Cc:     andy.shevchenko@...il.com,
        Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Matt Ranostay <matt.ranostay@...sulko.com>,
        Your Name <you@...mple.com>,
        Chris Lesiak <chris.lesiak@...or.com>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3] iio: humidity: hdc100x: Add ACPI HID table

x86 boards may use ACPI HID "TXNW1010" for the hdc100x device.

TI told us "The ACPI ID for TI is: https://uefi.org/node/1028 (TXNW),
therefore it would most likely be appropriate to use TXNW1010."

So add an ACPI match table for that accordingly.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
---
v3:
 - Add info from vendor
 - Drop redundant line and comma.
 - Wording change.

v2:
 - Change the ID to follow ACPI Spec
 - Add __maybe_unused to avoid compiler warning
 
 drivers/iio/humidity/hdc100x.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/iio/humidity/hdc100x.c b/drivers/iio/humidity/hdc100x.c
index 9e0fce917ce4c..47f8e8ef56d68 100644
--- a/drivers/iio/humidity/hdc100x.c
+++ b/drivers/iio/humidity/hdc100x.c
@@ -417,10 +417,17 @@ static const struct of_device_id hdc100x_dt_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, hdc100x_dt_ids);
 
+static const struct acpi_device_id hdc100x_acpi_match[] = {
+	{ "TXNW1010" },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, hdc100x_acpi_match);
+
 static struct i2c_driver hdc100x_driver = {
 	.driver = {
 		.name	= "hdc100x",
 		.of_match_table = hdc100x_dt_ids,
+		.acpi_match_table = hdc100x_acpi_match,
 	},
 	.probe = hdc100x_probe,
 	.id_table = hdc100x_id,
-- 
2.33.1