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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /drivers/input/mouse/atarimouse.c
downloadlinux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz
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Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ...
Diffstat (limited to 'drivers/input/mouse/atarimouse.c')
-rw-r--r--drivers/input/mouse/atarimouse.c153
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);