iio: proximity: vl53l0x-i2c: claim direct mode for raw readsgrafted

vl53l0x_read_raw() starts a single-shot ranging measurement and reads
back the result. Once the triggered buffer is enabled the sensor runs in
continuous mode and its data-ready interrupt is routed to the trigger,
so a concurrent in_distance_raw read disturbs the streaming setup and
never gets its completion, returning -ETIMEDOUT.

The original submission claimed direct mode here, but it was dropped
during review because the driver had no buffer support at the time [1].
Continuous (buffered) mode was later added without restoring the
claim [2], reintroducing the conflict.

Reject direct reads while buffered capture is active by claiming direct
mode around the measurement, as the vl53l1x sibling already does.

Fixes: 762186c6e7b1 ("iio: proximity: vl53l0x-i2c: Added continuous mode support")
Link: https://lore.kernel.org/linux-iio/20180911160300.GA9212@himanshu-Vostro-3559/ [1]
Link: https://lore.kernel.org/linux-iio/20240909101508.263085-3-abhashkumarjha123@gmail.com/ [2]
Signed-off-by: Donggeun Yoo <donggeunyoo.kernel@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/include/sound/sdca_jack.h b/include/sound/sdca_jack.h
new file mode 100644
index 000000000..871ba2d81
--- /dev/null
+++ b/include/sound/sdca_jack.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * The MIPI SDCA specification is available for public downloads at
+ * https://www.mipi.org/mipi-sdca-v1-0-download
+ *
+ * Copyright (C) 2025 Cirrus Logic, Inc. and
+ *                    Cirrus Logic International Semiconductor Ltd.
+ */
+
+#ifndef __SDCA_JACK_H__
+#define __SDCA_JACK_H__
+
+struct sdca_interrupt;
+struct snd_kcontrol;
+struct snd_soc_jack;
+
+/**
+ * struct jack_state - Jack state structure to keep data between interrupts
+ * @kctl: Pointer to the ALSA control attached to this jack
+ * @jack: Pointer to the ASoC jack struct for this jack
+ * @mask: Possible reported jack status bits for this jack
+ */
+struct jack_state {
+	struct snd_kcontrol *kctl;
+	struct snd_soc_jack *jack;
+
+	unsigned int mask;
+};
+
+int sdca_jack_alloc_state(struct sdca_interrupt *interrupt);
+int sdca_jack_init_state(struct sdca_interrupt *interrupt);
+void sdca_jack_free_state(struct sdca_interrupt *interrupt);
+
+int sdca_jack_process(struct sdca_interrupt *interrupt);
+int sdca_jack_set_jack(struct sdca_interrupt_info *info, struct snd_soc_jack *jack);
+int sdca_jack_report(struct sdca_interrupt *interrupt);
+
+#endif // __SDCA_JACK_H__