From: Fiona Klute <fiona.klute@gmx.de>
Date: Thu, 18 Dec 2025 15:12:05 +0000 (+0100)
Subject: iio: chemical: scd4x: expose timestamp channel
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e7324980fa91f5bc0d1f5adc82d31775d4cab5bd;p=thirdparty%2Fkernel%2Flinux.git

iio: chemical: scd4x: expose timestamp channel

Timestamps were already written to the buffer in
scd4x_trigger_handler(), this patch makes them available as a channel.

Signed-off-by: Fiona Klute <fiona.klute@gmx.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---

diff --git a/drivers/iio/chemical/scd4x.c b/drivers/iio/chemical/scd4x.c
index 8859f89fb2a94..bb0019bb02a17 100644
--- a/drivers/iio/chemical/scd4x.c
+++ b/drivers/iio/chemical/scd4x.c
@@ -59,6 +59,8 @@ enum scd4x_channel_idx {
 	SCD4X_CO2,
 	SCD4X_TEMP,
 	SCD4X_HR,
+	/* kernel timestamp, at the end of buffer */
+	SCD4X_TS,
 };
 
 struct scd4x_state {
@@ -615,6 +617,7 @@ static const struct iio_chan_spec scd4x_channels[] = {
 			.endianness = IIO_BE,
 		},
 	},
+	IIO_CHAN_SOFT_TIMESTAMP(SCD4X_TS),
 };
 
 static int scd4x_suspend(struct device *dev)