+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2011 - 2015 UNISYS CORPORATION
- * All rights reserved.
- */
-
-/*
- * This driver lives in a generic guest Linux partition, and registers to
- * receive keyboard and mouse channels from the visorbus driver. It reads
- * inputs from such channels, and delivers it to the Linux OS in the
- * standard way the Linux expects for input drivers.
- */
-
-#include <linux/fb.h>
-#include <linux/input.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/uuid.h>
-#include <linux/visorbus.h>
-
-/* These defines identify mouse and keyboard activity which is specified by the
- * firmware to the host using the cmsimpleinput protocol. @ingroup coretypes
- */
-/* only motion; arg1=x, arg2=y */
-#define INPUTACTION_XY_MOTION 1
-
-/* arg1: 1=left,2=center,3=right */
-#define INPUTACTION_MOUSE_BUTTON_DOWN 2
-#define INPUTACTION_MOUSE_BUTTON_UP 3
-#define INPUTACTION_MOUSE_BUTTON_CLICK 4
-#define INPUTACTION_MOUSE_BUTTON_DCLICK 5
-
-/* arg1: wheel rotation away from/toward user */
-#define INPUTACTION_WHEEL_ROTATE_AWAY 6
-#define INPUTACTION_WHEEL_ROTATE_TOWARD 7
-
-/* arg1: scancode, as follows: If arg1 <= 0xff, it's a 1-byte scancode and arg1
- * is that scancode. If arg1 > 0xff, it's a 2-byte scanecode, with the 1st
- * byte in the low 8 bits, and the 2nd byte in the high 8 bits.
- * E.g., the right ALT key would appear as x'38e0'.
- */
-#define INPUTACTION_KEY_DOWN 64
-#define INPUTACTION_KEY_UP 65
-#define INPUTACTION_KEY_DOWN_UP 67
-
-/* arg1: scancode (in same format as inputaction_keyDown); MUST refer to one of
- * the locking keys, like capslock, numlock, or scrolllock.
- * arg2: 1 iff locking key should be in the LOCKED position (e.g., light is ON)
- */
-#define INPUTACTION_SET_LOCKING_KEY_STATE 66
-
-/* Keyboard channel {c73416d0-b0b8-44af-b304-9d2ae99f1b3d} */
-#define VISOR_KEYBOARD_CHANNEL_GUID \
- GUID_INIT(0xc73416d0, 0xb0b8, 0x44af, \
- 0xb3, 0x4, 0x9d, 0x2a, 0xe9, 0x9f, 0x1b, 0x3d)
-#define VISOR_KEYBOARD_CHANNEL_GUID_STR "c73416d0-b0b8-44af-b304-9d2ae99f1b3d"
-
-/* Mouse channel {addf07d4-94a9-46e2-81c3-61abcdbdbd87} */
-#define VISOR_MOUSE_CHANNEL_GUID \
- GUID_INIT(0xaddf07d4, 0x94a9, 0x46e2, \
- 0x81, 0xc3, 0x61, 0xab, 0xcd, 0xbd, 0xbd, 0x87)
-#define VISOR_MOUSE_CHANNEL_GUID_STR "addf07d4-94a9-46e2-81c3-61abcdbdbd87"
-
-#define PIXELS_ACROSS_DEFAULT 1024
-#define PIXELS_DOWN_DEFAULT 768
-#define KEYCODE_TABLE_BYTES 256
-
-struct visor_inputactivity {
- u16 action;
- u16 arg1;
- u16 arg2;
- u16 arg3;
-} __packed;
-
-struct visor_inputreport {
- u64 seq_no;
- struct visor_inputactivity activity;
-} __packed;
-
-/* header of keyboard/mouse channels */
-struct visor_input_channel_data {
- u32 n_input_reports;
- union {
- struct {
- u16 x_res;
- u16 y_res;
- } mouse;
- struct {
- u32 flags;
- } keyboard;
- };
-} __packed;
-
-enum visorinput_dev_type {
- visorinput_keyboard,
- visorinput_mouse,
-};
-
-/*
- * This is the private data that we store for each device. A pointer to this
- * struct is maintained via dev_get_drvdata() / dev_set_drvdata() for each
- * struct device.
- */
-struct visorinput_devdata {
- struct visor_device *dev;
- /* lock for dev */
- struct mutex lock_visor_dev;
- struct input_dev *visorinput_dev;
- bool paused;
- bool interrupts_enabled;
- /* size of following array */
- unsigned int keycode_table_bytes;
- /* for keyboard devices: visorkbd_keycode[] + visorkbd_ext_keycode[] */
- unsigned char keycode_table[];
-};
-
-static const guid_t visor_keyboard_channel_guid = VISOR_KEYBOARD_CHANNEL_GUID;
-static const guid_t visor_mouse_channel_guid = VISOR_MOUSE_CHANNEL_GUID;
-
-/*
- * Borrowed from drivers/input/keyboard/atakbd.c
- * This maps 1-byte scancodes to keycodes.
- */
-static const unsigned char visorkbd_keycode[KEYCODE_TABLE_BYTES] = {
- /* American layout */
- [0] = KEY_GRAVE,
- [1] = KEY_ESC,
- [2] = KEY_1,
- [3] = KEY_2,
- [4] = KEY_3,
- [5] = KEY_4,
- [6] = KEY_5,
- [7] = KEY_6,
- [8] = KEY_7,
- [9] = KEY_8,
- [10] = KEY_9,
- [11] = KEY_0,
- [12] = KEY_MINUS,
- [13] = KEY_EQUAL,
- [14] = KEY_BACKSPACE,
- [15] = KEY_TAB,
- [16] = KEY_Q,
- [17] = KEY_W,
- [18] = KEY_E,
- [19] = KEY_R,
- [20] = KEY_T,
- [21] = KEY_Y,
- [22] = KEY_U,
- [23] = KEY_I,
- [24] = KEY_O,
- [25] = KEY_P,
- [26] = KEY_LEFTBRACE,
- [27] = KEY_RIGHTBRACE,
- [28] = KEY_ENTER,
- [29] = KEY_LEFTCTRL,
- [30] = KEY_A,
- [31] = KEY_S,
- [32] = KEY_D,
- [33] = KEY_F,
- [34] = KEY_G,
- [35] = KEY_H,
- [36] = KEY_J,
- [37] = KEY_K,
- [38] = KEY_L,
- [39] = KEY_SEMICOLON,
- [40] = KEY_APOSTROPHE,
- [41] = KEY_GRAVE,
- [42] = KEY_LEFTSHIFT,
- [43] = KEY_BACKSLASH,
- [44] = KEY_Z,
- [45] = KEY_X,
- [46] = KEY_C,
- [47] = KEY_V,
- [48] = KEY_B,
- [49] = KEY_N,
- [50] = KEY_M,
- [51] = KEY_COMMA,
- [52] = KEY_DOT,
- [53] = KEY_SLASH,
- [54] = KEY_RIGHTSHIFT,
- [55] = KEY_KPASTERISK,
- [56] = KEY_LEFTALT,
- [57] = KEY_SPACE,
- [58] = KEY_CAPSLOCK,
- [59] = KEY_F1,
- [60] = KEY_F2,
- [61] = KEY_F3,
- [62] = KEY_F4,
- [63] = KEY_F5,
- [64] = KEY_F6,
- [65] = KEY_F7,
- [66] = KEY_F8,
- [67] = KEY_F9,
- [68] = KEY_F10,
- [69] = KEY_NUMLOCK,
- [70] = KEY_SCROLLLOCK,
- [71] = KEY_KP7,
- [72] = KEY_KP8,
- [73] = KEY_KP9,
- [74] = KEY_KPMINUS,
- [75] = KEY_KP4,
- [76] = KEY_KP5,
- [77] = KEY_KP6,
- [78] = KEY_KPPLUS,
- [79] = KEY_KP1,
- [80] = KEY_KP2,
- [81] = KEY_KP3,
- [82] = KEY_KP0,
- [83] = KEY_KPDOT,
- /* enables UK backslash+pipe key and FR lessthan+greaterthan key */
- [86] = KEY_102ND,
- [87] = KEY_F11,
- [88] = KEY_F12,
- [90] = KEY_KPLEFTPAREN,
- [91] = KEY_KPRIGHTPAREN,
- [92] = KEY_KPASTERISK,
- [93] = KEY_KPASTERISK,
- [94] = KEY_KPPLUS,
- [95] = KEY_HELP,
- [96] = KEY_KPENTER,
- [97] = KEY_RIGHTCTRL,
- [98] = KEY_KPSLASH,
- [99] = KEY_KPLEFTPAREN,
- [100] = KEY_KPRIGHTPAREN,
- [101] = KEY_KPSLASH,
- [102] = KEY_HOME,
- [103] = KEY_UP,
- [104] = KEY_PAGEUP,
- [105] = KEY_LEFT,
- [106] = KEY_RIGHT,
- [107] = KEY_END,
- [108] = KEY_DOWN,
- [109] = KEY_PAGEDOWN,
- [110] = KEY_INSERT,
- [111] = KEY_DELETE,
- [112] = KEY_MACRO,
- [113] = KEY_MUTE
-};
-
-/*
- * This maps the <xx> in extended scancodes of the form "0xE0 <xx>" into
- * keycodes.
- */
-static const unsigned char visorkbd_ext_keycode[KEYCODE_TABLE_BYTES] = {
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x00 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* 0x10 */
- 0, 0, 0, 0, KEY_KPENTER, KEY_RIGHTCTRL, 0, 0, /* 0x18 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* 0x20 */
- KEY_RIGHTALT, 0, 0, 0, 0, 0, 0, 0, /* 0x28 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* 0x30 */
- KEY_RIGHTALT /* AltGr */, 0, 0, 0, 0, 0, 0, 0, /* 0x38 */
- 0, 0, 0, 0, 0, 0, 0, KEY_HOME, /* 0x40 */
- KEY_UP, KEY_PAGEUP, 0, KEY_LEFT, 0, KEY_RIGHT, 0, KEY_END, /* 0x48 */
- KEY_DOWN, KEY_PAGEDOWN, KEY_INSERT, KEY_DELETE, 0, 0, 0, 0, /* 0x50 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* 0x58 */
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x60 */
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x70 */
-};
-
-static int visorinput_open(struct input_dev *visorinput_dev)
-{
- struct visorinput_devdata *devdata = input_get_drvdata(visorinput_dev);
-
- if (!devdata) {
- dev_err(&visorinput_dev->dev,
- "%s input_get_drvdata(%p) returned NULL\n",
- __func__, visorinput_dev);
- return -EINVAL;
- }
- dev_dbg(&visorinput_dev->dev, "%s opened\n", __func__);
-
- /*
- * If we're not paused, really enable interrupts. Regardless of whether
- * we are paused, set a flag indicating interrupts should be enabled so
- * when we resume, interrupts will really be enabled.
- */
- mutex_lock(&devdata->lock_visor_dev);
- devdata->interrupts_enabled = true;
- if (devdata->paused)
- goto out_unlock;
- visorbus_enable_channel_interrupts(devdata->dev);
-
-out_unlock:
- mutex_unlock(&devdata->lock_visor_dev);
- return 0;
-}
-
-static void visorinput_close(struct input_dev *visorinput_dev)
-{
- struct visorinput_devdata *devdata = input_get_drvdata(visorinput_dev);
-
- if (!devdata) {
- dev_err(&visorinput_dev->dev,
- "%s input_get_drvdata(%p) returned NULL\n",
- __func__, visorinput_dev);
- return;
- }
- dev_dbg(&visorinput_dev->dev, "%s closed\n", __func__);
-
- /*
- * If we're not paused, really disable interrupts. Regardless of
- * whether we are paused, set a flag indicating interrupts should be
- * disabled so when we resume we will not re-enable them.
- */
- mutex_lock(&devdata->lock_visor_dev);
- devdata->interrupts_enabled = false;
- if (devdata->paused)
- goto out_unlock;
- visorbus_disable_channel_interrupts(devdata->dev);
-
-out_unlock:
- mutex_unlock(&devdata->lock_visor_dev);
-}
-
-/*
- * setup_client_keyboard() initializes and returns a Linux input node that we
- * can use to deliver keyboard inputs to Linux. We of course do this when we
- * see keyboard inputs coming in on a keyboard channel.
- */
-static struct input_dev *setup_client_keyboard(void *devdata,
- unsigned char *keycode_table)
-
-{
- int i;
- struct input_dev *visorinput_dev = input_allocate_device();
-
- if (!visorinput_dev)
- return NULL;
-
- visorinput_dev->name = "visor Keyboard";
- visorinput_dev->phys = "visorkbd:input0";
- visorinput_dev->id.bustype = BUS_VIRTUAL;
- visorinput_dev->id.vendor = 0x0001;
- visorinput_dev->id.product = 0x0001;
- visorinput_dev->id.version = 0x0100;
-
- visorinput_dev->evbit[0] = BIT_MASK(EV_KEY) |
- BIT_MASK(EV_REP) |
- BIT_MASK(EV_LED);
- visorinput_dev->ledbit[0] = BIT_MASK(LED_CAPSL) |
- BIT_MASK(LED_SCROLLL) |
- BIT_MASK(LED_NUML);
- visorinput_dev->keycode = keycode_table;
- /* sizeof(unsigned char) */
- visorinput_dev->keycodesize = 1;
- visorinput_dev->keycodemax = KEYCODE_TABLE_BYTES;
-
- for (i = 1; i < visorinput_dev->keycodemax; i++)
- set_bit(keycode_table[i], visorinput_dev->keybit);
- for (i = 1; i < visorinput_dev->keycodemax; i++)
- set_bit(keycode_table[i + KEYCODE_TABLE_BYTES],
- visorinput_dev->keybit);
-
- visorinput_dev->open = visorinput_open;
- visorinput_dev->close = visorinput_close;
- /* pre input_register! */
- input_set_drvdata(visorinput_dev, devdata);
-
- return visorinput_dev;
-}
-
-static struct input_dev *setup_client_mouse(void *devdata, unsigned int xres,
- unsigned int yres)
-{
- struct input_dev *visorinput_dev = input_allocate_device();
-
- if (!visorinput_dev)
- return NULL;
-
- visorinput_dev->name = "visor Mouse";
- visorinput_dev->phys = "visormou:input0";
- visorinput_dev->id.bustype = BUS_VIRTUAL;
- visorinput_dev->id.vendor = 0x0001;
- visorinput_dev->id.product = 0x0002;
- visorinput_dev->id.version = 0x0100;
-
- visorinput_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
- set_bit(BTN_LEFT, visorinput_dev->keybit);
- set_bit(BTN_RIGHT, visorinput_dev->keybit);
- set_bit(BTN_MIDDLE, visorinput_dev->keybit);
-
- if (xres == 0)
- xres = PIXELS_ACROSS_DEFAULT;
- if (yres == 0)
- yres = PIXELS_DOWN_DEFAULT;
- input_set_abs_params(visorinput_dev, ABS_X, 0, xres, 0, 0);
- input_set_abs_params(visorinput_dev, ABS_Y, 0, yres, 0, 0);
-
- visorinput_dev->open = visorinput_open;
- visorinput_dev->close = visorinput_close;
- /* pre input_register! */
- input_set_drvdata(visorinput_dev, devdata);
- input_set_capability(visorinput_dev, EV_REL, REL_WHEEL);
-
- return visorinput_dev;
-}
-
-static struct visorinput_devdata *devdata_create(struct visor_device *dev,
- enum visorinput_dev_type dtype)
-{
- struct visorinput_devdata *devdata = NULL;
- unsigned int extra_bytes = 0;
- unsigned int size, xres, yres, err;
- struct visor_input_channel_data data;
-
- if (dtype == visorinput_keyboard)
- /* allocate room for devdata->keycode_table, filled in below */
- extra_bytes = KEYCODE_TABLE_BYTES * 2;
- devdata = kzalloc(struct_size(devdata, keycode_table, extra_bytes),
- GFP_KERNEL);
- if (!devdata)
- return NULL;
- mutex_init(&devdata->lock_visor_dev);
- mutex_lock(&devdata->lock_visor_dev);
- devdata->dev = dev;
-
- /*
- * visorinput_open() can be called as soon as input_register_device()
- * happens, and that will enable channel interrupts. Setting paused
- * prevents us from getting into visorinput_channel_interrupt() prior
- * to the device structure being totally initialized.
- */
- devdata->paused = true;
-
- /*
- * This is an input device in a client guest partition, so we need to
- * create whatever input nodes are necessary to deliver our inputs to
- * the guest OS.
- */
- switch (dtype) {
- case visorinput_keyboard:
- devdata->keycode_table_bytes = extra_bytes;
- memcpy(devdata->keycode_table, visorkbd_keycode,
- KEYCODE_TABLE_BYTES);
- memcpy(devdata->keycode_table + KEYCODE_TABLE_BYTES,
- visorkbd_ext_keycode, KEYCODE_TABLE_BYTES);
- devdata->visorinput_dev = setup_client_keyboard
- (devdata, devdata->keycode_table);
- if (!devdata->visorinput_dev)
- goto cleanups_register;
- break;
- case visorinput_mouse:
- size = sizeof(struct visor_input_channel_data);
- err = visorbus_read_channel(dev, sizeof(struct channel_header),
- &data, size);
- if (err)
- goto cleanups_register;
- xres = data.mouse.x_res;
- yres = data.mouse.y_res;
- devdata->visorinput_dev = setup_client_mouse(devdata, xres,
- yres);
- if (!devdata->visorinput_dev)
- goto cleanups_register;
- break;
- default:
- /* No other input devices supported */
- break;
- }
-
- dev_set_drvdata(&dev->device, devdata);
- mutex_unlock(&devdata->lock_visor_dev);
-
- /*
- * Device struct is completely set up now, with the exception of
- * visorinput_dev being registered. We need to unlock before we
- * register the device, because this can cause an on-stack call of
- * visorinput_open(), which would deadlock if we had the lock.
- */
- if (input_register_device(devdata->visorinput_dev)) {
- input_free_device(devdata->visorinput_dev);
- goto err_kfree_devdata;
- }
-
- mutex_lock(&devdata->lock_visor_dev);
- /*
- * Establish calls to visorinput_channel_interrupt() if that is the
- * desired state that we've kept track of in interrupts_enabled while
- * the device was being created.
- */
- devdata->paused = false;
- if (devdata->interrupts_enabled)
- visorbus_enable_channel_interrupts(dev);
- mutex_unlock(&devdata->lock_visor_dev);
-
- return devdata;
-
-cleanups_register:
- mutex_unlock(&devdata->lock_visor_dev);
-err_kfree_devdata:
- kfree(devdata);
- return NULL;
-}
-
-static int visorinput_probe(struct visor_device *dev)
-{
- const guid_t *guid;
- enum visorinput_dev_type dtype;
-
- guid = visorchannel_get_guid(dev->visorchannel);
- if (guid_equal(guid, &visor_mouse_channel_guid))
- dtype = visorinput_mouse;
- else if (guid_equal(guid, &visor_keyboard_channel_guid))
- dtype = visorinput_keyboard;
- else
- return -ENODEV;
- visorbus_disable_channel_interrupts(dev);
- if (!devdata_create(dev, dtype))
- return -ENOMEM;
- return 0;
-}
-
-static void unregister_client_input(struct input_dev *visorinput_dev)
-{
- if (visorinput_dev)
- input_unregister_device(visorinput_dev);
-}
-
-static void visorinput_remove(struct visor_device *dev)
-{
- struct visorinput_devdata *devdata = dev_get_drvdata(&dev->device);
-
- if (!devdata)
- return;
-
- mutex_lock(&devdata->lock_visor_dev);
- visorbus_disable_channel_interrupts(dev);
-
- /*
- * due to above, at this time no thread of execution will be in
- * visorinput_channel_interrupt()
- */
-
- dev_set_drvdata(&dev->device, NULL);
- mutex_unlock(&devdata->lock_visor_dev);
-
- unregister_client_input(devdata->visorinput_dev);
- kfree(devdata);
-}
-
-/*
- * Make it so the current locking state of the locking key indicated by
- * <keycode> is as indicated by <desired_state> (1=locked, 0=unlocked).
- */
-static void handle_locking_key(struct input_dev *visorinput_dev, int keycode,
- int desired_state)
-{
- int led;
-
- switch (keycode) {
- case KEY_CAPSLOCK:
- led = LED_CAPSL;
- break;
- case KEY_SCROLLLOCK:
- led = LED_SCROLLL;
- break;
- case KEY_NUMLOCK:
- led = LED_NUML;
- break;
- default:
- return;
- }
- if (test_bit(led, visorinput_dev->led) != desired_state) {
- input_report_key(visorinput_dev, keycode, 1);
- input_sync(visorinput_dev);
- input_report_key(visorinput_dev, keycode, 0);
- input_sync(visorinput_dev);
- __change_bit(led, visorinput_dev->led);
- }
-}
-
-/*
- * <scancode> is either a 1-byte scancode, or an extended 16-bit scancode with
- * 0xE0 in the low byte and the extended scancode value in the next higher byte.
- */
-static int scancode_to_keycode(int scancode)
-{
- if (scancode > 0xff)
- return visorkbd_ext_keycode[(scancode >> 8) & 0xff];
-
- return visorkbd_keycode[scancode];
-}
-
-static int calc_button(int x)
-{
- switch (x) {
- case 1:
- return BTN_LEFT;
- case 2:
- return BTN_MIDDLE;
- case 3:
- return BTN_RIGHT;
- default:
- return -EINVAL;
- }
-}
-
-/*
- * This is used only when this driver is active as an input driver in the
- * client guest partition. It is called periodically so we can obtain inputs
- * from the channel, and deliver them to the guest OS.
- */
-static void visorinput_channel_interrupt(struct visor_device *dev)
-{
- struct visor_inputreport r;
- int scancode, keycode;
- struct input_dev *visorinput_dev;
- int xmotion, ymotion, button;
- int i;
- struct visorinput_devdata *devdata = dev_get_drvdata(&dev->device);
-
- if (!devdata)
- return;
-
- visorinput_dev = devdata->visorinput_dev;
-
- while (!visorchannel_signalremove(dev->visorchannel, 0, &r)) {
- scancode = r.activity.arg1;
- keycode = scancode_to_keycode(scancode);
- switch (r.activity.action) {
- case INPUTACTION_KEY_DOWN:
- input_report_key(visorinput_dev, keycode, 1);
- input_sync(visorinput_dev);
- break;
- case INPUTACTION_KEY_UP:
- input_report_key(visorinput_dev, keycode, 0);
- input_sync(visorinput_dev);
- break;
- case INPUTACTION_KEY_DOWN_UP:
- input_report_key(visorinput_dev, keycode, 1);
- input_sync(visorinput_dev);
- input_report_key(visorinput_dev, keycode, 0);
- input_sync(visorinput_dev);
- break;
- case INPUTACTION_SET_LOCKING_KEY_STATE:
- handle_locking_key(visorinput_dev, keycode,
- r.activity.arg2);
- break;
- case INPUTACTION_XY_MOTION:
- xmotion = r.activity.arg1;
- ymotion = r.activity.arg2;
- input_report_abs(visorinput_dev, ABS_X, xmotion);
- input_report_abs(visorinput_dev, ABS_Y, ymotion);
- input_sync(visorinput_dev);
- break;
- case INPUTACTION_MOUSE_BUTTON_DOWN:
- button = calc_button(r.activity.arg1);
- if (button < 0)
- break;
- input_report_key(visorinput_dev, button, 1);
- input_sync(visorinput_dev);
- break;
- case INPUTACTION_MOUSE_BUTTON_UP:
- button = calc_button(r.activity.arg1);
- if (button < 0)
- break;
- input_report_key(visorinput_dev, button, 0);
- input_sync(visorinput_dev);
- break;
- case INPUTACTION_MOUSE_BUTTON_CLICK:
- button = calc_button(r.activity.arg1);
- if (button < 0)
- break;
- input_report_key(visorinput_dev, button, 1);
- input_sync(visorinput_dev);
- input_report_key(visorinput_dev, button, 0);
- input_sync(visorinput_dev);
- break;
- case INPUTACTION_MOUSE_BUTTON_DCLICK:
- button = calc_button(r.activity.arg1);
- if (button < 0)
- break;
- for (i = 0; i < 2; i++) {
- input_report_key(visorinput_dev, button, 1);
- input_sync(visorinput_dev);
- input_report_key(visorinput_dev, button, 0);
- input_sync(visorinput_dev);
- }
- break;
- case INPUTACTION_WHEEL_ROTATE_AWAY:
- input_report_rel(visorinput_dev, REL_WHEEL, 1);
- input_sync(visorinput_dev);
- break;
- case INPUTACTION_WHEEL_ROTATE_TOWARD:
- input_report_rel(visorinput_dev, REL_WHEEL, -1);
- input_sync(visorinput_dev);
- break;
- default:
- /* Unsupported input action */
- break;
- }
- }
-}
-
-static int visorinput_pause(struct visor_device *dev,
- visorbus_state_complete_func complete_func)
-{
- int rc;
- struct visorinput_devdata *devdata = dev_get_drvdata(&dev->device);
-
- if (!devdata) {
- rc = -ENODEV;
- goto out;
- }
-
- mutex_lock(&devdata->lock_visor_dev);
- if (devdata->paused) {
- rc = -EBUSY;
- goto out_locked;
- }
- if (devdata->interrupts_enabled)
- visorbus_disable_channel_interrupts(dev);
-
- /*
- * due to above, at this time no thread of execution will be in
- * visorinput_channel_interrupt()
- */
- devdata->paused = true;
- complete_func(dev, 0);
- rc = 0;
-out_locked:
- mutex_unlock(&devdata->lock_visor_dev);
-out:
- return rc;
-}
-
-static int visorinput_resume(struct visor_device *dev,
- visorbus_state_complete_func complete_func)
-{
- int rc;
- struct visorinput_devdata *devdata = dev_get_drvdata(&dev->device);
-
- if (!devdata) {
- rc = -ENODEV;
- goto out;
- }
- mutex_lock(&devdata->lock_visor_dev);
- if (!devdata->paused) {
- rc = -EBUSY;
- goto out_locked;
- }
- devdata->paused = false;
- complete_func(dev, 0);
-
- /*
- * Re-establish calls to visorinput_channel_interrupt() if that is the
- * desired state that we've kept track of in interrupts_enabled while
- * the device was paused.
- */
- if (devdata->interrupts_enabled)
- visorbus_enable_channel_interrupts(dev);
-
- rc = 0;
-out_locked:
- mutex_unlock(&devdata->lock_visor_dev);
-out:
- return rc;
-}
-
-/* GUIDS for all channel types supported by this driver. */
-static struct visor_channeltype_descriptor visorinput_channel_types[] = {
- { VISOR_KEYBOARD_CHANNEL_GUID, "keyboard",
- sizeof(struct channel_header), 0 },
- { VISOR_MOUSE_CHANNEL_GUID, "mouse", sizeof(struct channel_header), 0 },
- {}
-};
-
-static struct visor_driver visorinput_driver = {
- .name = "visorinput",
- .owner = THIS_MODULE,
- .channel_types = visorinput_channel_types,
- .probe = visorinput_probe,
- .remove = visorinput_remove,
- .channel_interrupt = visorinput_channel_interrupt,
- .pause = visorinput_pause,
- .resume = visorinput_resume,
-};
-
-module_driver(visorinput_driver, visorbus_register_visor_driver,
- visorbus_unregister_visor_driver);
-
-MODULE_DEVICE_TABLE(visorbus, visorinput_channel_types);
-
-MODULE_AUTHOR("Unisys");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("s-Par human input driver for virtual keyboard/mouse");
-
-MODULE_ALIAS("visorbus:" VISOR_MOUSE_CHANNEL_GUID_STR);
-MODULE_ALIAS("visorbus:" VISOR_KEYBOARD_CHANNEL_GUID_STR);
projects / linux-2.6-microblaze.git / blobdiff