Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

1 files changed, 73 insertions, 0 deletions

diff --git a/net/nfc/nci/lib.c b/net/nfc/nci/lib.c
new file mode 100644
index 000000000..473323f80
--- /dev/null
+++ b/net/nfc/nci/lib.c
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  The NFC Controller Interface is the communication protocol between an
+ *  NFC Controller (NFCC) and a Device Host (DH).
+ *
+ *  Copyright (C) 2011 Texas Instruments, Inc.
+ *
+ *  Written by Ilan Elias <ilane@ti.com>
+ *
+ *  Acknowledgements:
+ *  This file is based on lib.c, which was written
+ *  by Maxim Krasnyansky.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+
+#include <net/nfc/nci.h>
+#include <net/nfc/nci_core.h>
+
+/* NCI status codes to Unix errno mapping */
+int nci_to_errno(__u8 code)
+{
+	switch (code) {
+	case NCI_STATUS_OK:
+		return 0;
+
+	case NCI_STATUS_REJECTED:
+		return -EBUSY;
+
+	case NCI_STATUS_RF_FRAME_CORRUPTED:
+		return -EBADMSG;
+
+	case NCI_STATUS_NOT_INITIALIZED:
+		return -EHOSTDOWN;
+
+	case NCI_STATUS_SYNTAX_ERROR:
+	case NCI_STATUS_SEMANTIC_ERROR:
+	case NCI_STATUS_INVALID_PARAM:
+	case NCI_STATUS_RF_PROTOCOL_ERROR:
+	case NCI_STATUS_NFCEE_PROTOCOL_ERROR:
+		return -EPROTO;
+
+	case NCI_STATUS_UNKNOWN_GID:
+	case NCI_STATUS_UNKNOWN_OID:
+		return -EBADRQC;
+
+	case NCI_STATUS_MESSAGE_SIZE_EXCEEDED:
+		return -EMSGSIZE;
+
+	case NCI_STATUS_DISCOVERY_ALREADY_STARTED:
+		return -EALREADY;
+
+	case NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED:
+	case NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED:
+		return -ECONNREFUSED;
+
+	case NCI_STATUS_RF_TRANSMISSION_ERROR:
+	case NCI_STATUS_NFCEE_TRANSMISSION_ERROR:
+		return -ECOMM;
+
+	case NCI_STATUS_RF_TIMEOUT_ERROR:
+	case NCI_STATUS_NFCEE_TIMEOUT_ERROR:
+		return -ETIMEDOUT;
+
+	case NCI_STATUS_FAILED:
+	default:
+		return -ENOSYS;
+	}
+}
+EXPORT_SYMBOL(nci_to_errno);