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, 29 insertions, 0 deletions

diff --git a/drivers/input/keyboard/applespi.h b/drivers/input/keyboard/applespi.h
new file mode 100644
index 000000000..7f5ab10c5
--- /dev/null
+++ b/drivers/input/keyboard/applespi.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * MacBook (Pro) SPI keyboard and touchpad driver
+ *
+ * Copyright (c) 2015-2019 Federico Lorenzi
+ * Copyright (c) 2017-2019 Ronald Tschalär
+ */
+
+#ifndef _APPLESPI_H_
+#define _APPLESPI_H_
+
+enum applespi_evt_type {
+	ET_CMD_TP_INI = BIT(0),
+	ET_CMD_BL = BIT(1),
+	ET_CMD_CL = BIT(2),
+	ET_RD_KEYB = BIT(8),
+	ET_RD_TPAD = BIT(9),
+	ET_RD_UNKN = BIT(10),
+	ET_RD_IRQ = BIT(11),
+	ET_RD_CRC = BIT(12),
+};
+
+enum applespi_pkt_type {
+	PT_READ,
+	PT_WRITE,
+	PT_STATUS,
+};
+
+#endif /* _APPLESPI_H_ */