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, 153 insertions, 0 deletions

diff --git a/drivers/input/mouse/atarimouse.c b/drivers/input/mouse/atarimouse.c
new file mode 100644
index 000000000..b1219cc4d
--- /dev/null
+++ b/drivers/input/mouse/atarimouse.c
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  Atari mouse driver for Linux/m68k
+ *
+ *  Copyright (c) 2005 Michael Schmitz
+ *
+ *  Based on:
+ *  Amiga mouse driver for Linux/m68k
+ *
+ *  Copyright (c) 2000-2002 Vojtech Pavlik
+ */
+/*
+ * The low level init and interrupt stuff is handled in arch/mm68k/atari/atakeyb.c
+ * (the keyboard ACIA also handles the mouse and joystick data, and the keyboard
+ * interrupt is shared with the MIDI ACIA so MIDI data also get handled there).
+ * This driver only deals with handing key events off to the input layer.
+ *
+ * Largely based on the old:
+ *
+ * Atari Mouse Driver for Linux
+ * by Robert de Vries (robert@and.nl) 19Jul93
+ *
+ * 16 Nov 1994 Andreas Schwab
+ * Compatibility with busmouse
+ * Support for three button mouse (shamelessly stolen from MiNT)
+ * third button wired to one of the joystick directions on joystick 1
+ *
+ * 1996/02/11 Andreas Schwab
+ * Module support
+ * Allow multiple open's
+ *
+ * Converted to use new generic busmouse code.  5 Apr 1998
+ *   Russell King <rmk@arm.uk.linux.org>
+ */
+
+
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+
+#include <asm/irq.h>
+#include <asm/setup.h>
+#include <linux/uaccess.h>
+#include <asm/atarihw.h>
+#include <asm/atarikb.h>
+#include <asm/atariints.h>
+
+MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>");
+MODULE_DESCRIPTION("Atari mouse driver");
+MODULE_LICENSE("GPL");
+
+static int mouse_threshold[2] = {2, 2};
+module_param_array(mouse_threshold, int, NULL, 0);
+
+#ifdef FIXED_ATARI_JOYSTICK
+extern int atari_mouse_buttons;
+#endif
+
+static struct input_dev *atamouse_dev;
+
+static void atamouse_interrupt(char *buf)
+{
+	int buttons, dx, dy;
+
+	buttons = (buf[0] & 1) | ((buf[0] & 2) << 1);
+#ifdef FIXED_ATARI_JOYSTICK
+	buttons |= atari_mouse_buttons & 2;
+	atari_mouse_buttons = buttons;
+#endif
+
+	/* only relative events get here */
+	dx = buf[1];
+	dy = buf[2];
+
+	input_report_rel(atamouse_dev, REL_X, dx);
+	input_report_rel(atamouse_dev, REL_Y, dy);
+
+	input_report_key(atamouse_dev, BTN_LEFT,   buttons & 0x4);
+	input_report_key(atamouse_dev, BTN_MIDDLE, buttons & 0x2);
+	input_report_key(atamouse_dev, BTN_RIGHT,  buttons & 0x1);
+
+	input_sync(atamouse_dev);
+
+	return;
+}
+
+static int atamouse_open(struct input_dev *dev)
+{
+#ifdef FIXED_ATARI_JOYSTICK
+	atari_mouse_buttons = 0;
+#endif
+	ikbd_mouse_y0_top();
+	ikbd_mouse_thresh(mouse_threshold[0], mouse_threshold[1]);
+	ikbd_mouse_rel_pos();
+	atari_input_mouse_interrupt_hook = atamouse_interrupt;
+
+	return 0;
+}
+
+static void atamouse_close(struct input_dev *dev)
+{
+	ikbd_mouse_disable();
+	atari_input_mouse_interrupt_hook = NULL;
+}
+
+static int __init atamouse_init(void)
+{
+	int error;
+
+	if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP))
+		return -ENODEV;
+
+	error = atari_keyb_init();
+	if (error)
+		return error;
+
+	atamouse_dev = input_allocate_device();
+	if (!atamouse_dev)
+		return -ENOMEM;
+
+	atamouse_dev->name = "Atari mouse";
+	atamouse_dev->phys = "atamouse/input0";
+	atamouse_dev->id.bustype = BUS_HOST;
+	atamouse_dev->id.vendor = 0x0001;
+	atamouse_dev->id.product = 0x0002;
+	atamouse_dev->id.version = 0x0100;
+
+	atamouse_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
+	atamouse_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
+	atamouse_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
+		BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
+
+	atamouse_dev->open = atamouse_open;
+	atamouse_dev->close = atamouse_close;
+
+	error = input_register_device(atamouse_dev);
+	if (error) {
+		input_free_device(atamouse_dev);
+		return error;
+	}
+
+	return 0;
+}
+
+static void __exit atamouse_exit(void)
+{
+	input_unregister_device(atamouse_dev);
+}
+
+module_init(atamouse_init);
+module_exit(atamouse_exit);