Merge tag 'char-misc-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc/IIO/etc driver updates from Greg KH:
 "Here is the big set of char, misc, iio, counter, fpga, and other small
  driver subsystems for 7.3-rc1.

  Overall, due to some driver removals we only added a bit more code
  than removed, which was a nice change. Highlights in this merge
  request are:

   - Loads of IIO driver updates and additions

   - binder driver updates (more on that below...)

   - Removal of the SGI XP and GRU drivers as they are not used anymore
     and turn out to be pretty insecure overall

   - Removal of the obsolete ibmasm driver as it's not being used
     anymore

   - Coresight driver updates and additions

   - Mei driver udpates

   - Counter driver updates

   - FPGA driver updates

   - ICC driver updates

   - lots and lots of other tiny driver updates to resolve reported
     issues

  All of these have been in linux-next for a while"

* tag 'char-misc-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (513 commits)
  iio: chemical: atlas-sensor: use iio_trigger_poll_nested() to fix remove UAF
  iio: adc: pac1921: fix wrong channel used in trigger handler read
  iio: light: gp2ap002: re-enable irq if runtime suspend fails
  iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes
  iio: light: apds9306: fix PM reference leak in apds9306_read_data()
  iio: gyro: mpu3050: fix sign of raw angular velocity readings
  iio: srf04: fix pm_runtime handling on probe error path
  iio: adc: ad4080: configure backend data size
  iio: adc: adi-axi-adc: add data size support for AD408X backend
  iio: chemical: atlas-sensor: fix PM reference leak in buffer postenable
  iio: dac: ad5446: fix OF module device table
  iio: light: opt4001: Fix reversed GENMASK() arguments in fault count mask
  iio: light: opt4001: Reject integration times with a non-zero seconds part
  iio: light: opt4001: Fix incompatible pointer type passed to div_u64_rem()
  iio: light: opt4001: Fix power down clearing bits of the wrong register
  iio: light: opt4060: Fix incorrect register name in threshold read error message
  iio: light: opt4060: Fix pointer type passed to div_u64_rem()
  iio: light: opt4060: Reject integration times with a non-zero seconds part
  iio: light: ltrf216a: fix runtime PM reference leak in error path
  iio: pressure: dps310: fix NULL pointer dereference on ACPI probe
  ...

2 files changed, 70 insertions, 0 deletions

diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h
index c9295c707041..d0fb714ca0fd 100644
--- a/include/uapi/linux/iio/types.h
+++ b/include/uapi/linux/iio/types.h
@@ -54,6 +54,7 @@ enum iio_chan_type {
 	IIO_ATTENTION,
 	IIO_ALTCURRENT,
 	IIO_COVERAGE,
+	IIO_VOLUMEFLOW,
 };
 
 enum iio_modifier {
diff --git a/include/uapi/linux/issei.h b/include/uapi/linux/issei.h
new file mode 100644
index 000000000000..3bfb89330265
--- /dev/null
+++ b/include/uapi/linux/issei.h
@@ -0,0 +1,69 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Copyright (C) 2023-2026 Intel Corporation
+ * Intel Silicon Security Engine Interface (ISSEI) Linux driver:
+ * ISSEI Interface Header
+ */
+#ifndef _LINUX_ISSEI_H
+#define _LINUX_ISSEI_H
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+/*
+ * This ioctl is used to associate the current file descriptor with a
+ * FW Client (given by UUID). This opens a communication channel
+ * between a host client and a FW client. From this point every read and write
+ * will communicate with the associated FW client.
+ * The communication between the clients can be terminated by
+ * IOCTL_ISSEI_DISCONNECT_CLIENT IOCTL or by
+ * closing the file descriptor (file_operation release()).
+ *
+ * The ioctl argument is a struct with a union that contains
+ * the input parameter and the output parameter for this ioctl.
+ *
+ * The input parameter is UUID of the FW Client.
+ * The output parameter is the properties of the FW client
+ * (FW protocol version, max message size and client flags).
+ */
+#define IOCTL_ISSEI_CONNECT_CLIENT \
+	_IOWR('H', 0x01, struct issei_connect_client_data)
+
+/**
+ * struct issei_client - ISSEI client information structure
+ * @max_msg_length: maximum message length supported by the firmware client (in bytes)
+ * @protocol_version: protocol version reported by the firmware client
+ * @reserved1: reserved
+ * @flags: flag bitmask reported by the firmware client
+ * @reserved2: reserved
+ */
+struct issei_client {
+	__u32 max_msg_length;
+	__u8 protocol_version;
+	__u8 reserved1[3];
+	__u32 flags;
+	__u32 reserved2;
+};
+
+#define ISSEI_IOCTL_UUID_LEN 16
+
+/**
+ * struct issei_connect_client_data - ioctl Connect Client Data structure
+ * @in_client_uuid: unique id of the firmware client to connect to (from user space to kernel)
+ * @out_client_properties: connected firmware client properties (from kernel to user space)
+ */
+struct issei_connect_client_data {
+	union {
+		__u8 in_client_uuid[ISSEI_IOCTL_UUID_LEN];
+		struct issei_client out_client_properties;
+	};
+};
+
+/*
+ * This ioctl is used to terminate association between
+ * the host client and the FW client.
+ */
+#define IOCTL_ISSEI_DISCONNECT_CLIENT \
+	_IO('H', 0x02)
+
+#endif /* _LINUX_ISSEI_H */