linux-kernel - [PATCH] iio: hid-sensor-prox: Add support for 16-bit report size

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Message-Id: <20250317013634.4117399-1-lixu.zhang@intel.com>
Date: Mon, 17 Mar 2025 09:36:34 +0800
From: Zhang Lixu <lixu.zhang@...el.com>
To: jic23@...nel.org,
	jikos@...nel.org,
	srinivas.pandruvada@...ux.intel.com,
	lars@...afoo.de,
	linux-input@...r.kernel.org,
	linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: lixu.zhang@...el.com
Subject: [PATCH] iio: hid-sensor-prox: Add support for 16-bit report size

On Intel platforms, the HID_USAGE_SENSOR_HUMAN_PROXIMITY report size is 16
bits. This patch adds support for handling 16-bit report sizes for the
HID_USAGE_SENSOR_HUMAN_PROXIMITY usage in the HID sensor proximity driver.

Previously, the driver only supported 8-bit and 32-bit report sizes. With
this change, the driver can now correctly process 16-bit proximity data,
ensuring accurate human presence detection on platforms where this report
size is used.

Signed-off-by: Zhang Lixu <lixu.zhang@...el.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
---
 drivers/iio/light/hid-sensor-prox.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/iio/light/hid-sensor-prox.c b/drivers/iio/light/hid-sensor-prox.c
index 76b76d12b388..3a7b48803d50 100644
--- a/drivers/iio/light/hid-sensor-prox.c
+++ b/drivers/iio/light/hid-sensor-prox.c
@@ -213,6 +213,9 @@ static int prox_capture_sample(struct hid_sensor_hub_device *hsdev,
 	case 1:
 		prox_state->human_presence[chan] = *(u8 *)raw_data * multiplier;
 		return 0;
+	case 2:
+		prox_state->human_presence[chan] = *(u16 *)raw_data * multiplier;
+		return 0;
 	case 4:
 		prox_state->human_presence[chan] = *(u32 *)raw_data * multiplier;
 		return 0;

base-commit: eea255893718268e1ab852fb52f70c613d109b99
-- 
2.40.1