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drivers/input/mousedev.c
25.8 KB
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/* * Input driver to ExplorerPS/2 device driver module. * * Copyright (c) 1999-2002 Vojtech Pavlik * Copyright (c) 2004 Dmitry Torokhov * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. */ |
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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#define MOUSEDEV_MINOR_BASE 32 |
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#define MOUSEDEV_MINORS 32 #define MOUSEDEV_MIX 31 |
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#include <linux/sched.h> |
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#include <linux/slab.h> #include <linux/poll.h> #include <linux/module.h> |
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#include <linux/init.h> #include <linux/input.h> |
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#include <linux/random.h> #include <linux/major.h> #include <linux/device.h> |
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#include <linux/kernel.h> |
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#ifdef CONFIG_INPUT_MOUSEDEV_PSAUX #include <linux/miscdevice.h> #endif MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); MODULE_DESCRIPTION("Mouse (ExplorerPS/2) device interfaces"); MODULE_LICENSE("GPL"); #ifndef CONFIG_INPUT_MOUSEDEV_SCREEN_X #define CONFIG_INPUT_MOUSEDEV_SCREEN_X 1024 #endif #ifndef CONFIG_INPUT_MOUSEDEV_SCREEN_Y #define CONFIG_INPUT_MOUSEDEV_SCREEN_Y 768 #endif static int xres = CONFIG_INPUT_MOUSEDEV_SCREEN_X; |
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module_param(xres, uint, 0644); |
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MODULE_PARM_DESC(xres, "Horizontal screen resolution"); static int yres = CONFIG_INPUT_MOUSEDEV_SCREEN_Y; |
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module_param(yres, uint, 0644); |
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MODULE_PARM_DESC(yres, "Vertical screen resolution"); static unsigned tap_time = 200; |
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module_param(tap_time, uint, 0644); |
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MODULE_PARM_DESC(tap_time, "Tap time for touchpads in absolute mode (msecs)"); struct mousedev_hw_data { int dx, dy, dz; int x, y; int abs_event; unsigned long buttons; }; struct mousedev { |
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int open; int minor; |
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struct input_handle handle; |
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wait_queue_head_t wait; |
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struct list_head client_list; |
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spinlock_t client_lock; /* protects client_list */ struct mutex mutex; |
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struct device dev; |
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bool exist; |
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|
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struct list_head mixdev_node; int mixdev_open; |
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struct mousedev_hw_data packet; unsigned int pkt_count; int old_x[4], old_y[4]; int frac_dx, frac_dy; unsigned long touch; }; enum mousedev_emul { MOUSEDEV_EMUL_PS2, MOUSEDEV_EMUL_IMPS, MOUSEDEV_EMUL_EXPS }; struct mousedev_motion { int dx, dy, dz; unsigned long buttons; }; #define PACKET_QUEUE_LEN 16 |
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struct mousedev_client { |
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struct fasync_struct *fasync; struct mousedev *mousedev; struct list_head node; struct mousedev_motion packets[PACKET_QUEUE_LEN]; unsigned int head, tail; spinlock_t packet_lock; int pos_x, pos_y; signed char ps2[6]; unsigned char ready, buffer, bufsiz; unsigned char imexseq, impsseq; enum mousedev_emul mode; |
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unsigned long last_buttons; |
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}; #define MOUSEDEV_SEQ_LEN 6 static unsigned char mousedev_imps_seq[] = { 0xf3, 200, 0xf3, 100, 0xf3, 80 }; static unsigned char mousedev_imex_seq[] = { 0xf3, 200, 0xf3, 200, 0xf3, 80 }; static struct input_handler mousedev_handler; static struct mousedev *mousedev_table[MOUSEDEV_MINORS]; |
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static DEFINE_MUTEX(mousedev_table_mutex); |
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static struct mousedev *mousedev_mix; |
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static LIST_HEAD(mousedev_mix_list); |
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|
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static void mixdev_open_devices(void); static void mixdev_close_devices(void); |
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#define fx(i) (mousedev->old_x[(mousedev->pkt_count - (i)) & 03]) #define fy(i) (mousedev->old_y[(mousedev->pkt_count - (i)) & 03]) |
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static void mousedev_touchpad_event(struct input_dev *dev, struct mousedev *mousedev, unsigned int code, int value) |
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{ int size, tmp; enum { FRACTION_DENOM = 128 }; |
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switch (code) { |
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|
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case ABS_X: |
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|
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fx(0) = value; if (mousedev->touch && mousedev->pkt_count >= 2) { |
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size = input_abs_get_max(dev, ABS_X) - input_abs_get_min(dev, ABS_X); |
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if (size == 0) size = 256 * 2; |
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|
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tmp = ((value - fx(2)) * 256 * FRACTION_DENOM) / size; tmp += mousedev->frac_dx; mousedev->packet.dx = tmp / FRACTION_DENOM; mousedev->frac_dx = tmp - mousedev->packet.dx * FRACTION_DENOM; } break; case ABS_Y: fy(0) = value; if (mousedev->touch && mousedev->pkt_count >= 2) { |
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/* use X size for ABS_Y to keep the same scale */ |
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size = input_abs_get_max(dev, ABS_X) - input_abs_get_min(dev, ABS_X); |
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if (size == 0) size = 256 * 2; |
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|
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tmp = -((value - fy(2)) * 256 * FRACTION_DENOM) / size; tmp += mousedev->frac_dy; mousedev->packet.dy = tmp / FRACTION_DENOM; mousedev->frac_dy = tmp - mousedev->packet.dy * FRACTION_DENOM; } break; |
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} } |
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static void mousedev_abs_event(struct input_dev *dev, struct mousedev *mousedev, unsigned int code, int value) |
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{ |
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int min, max, size; |
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switch (code) { |
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|
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case ABS_X: |
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min = input_abs_get_min(dev, ABS_X); max = input_abs_get_max(dev, ABS_X); size = max - min; |
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if (size == 0) size = xres ? : 1; |
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|
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value = clamp(value, min, max); |
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mousedev->packet.x = ((value - min) * xres) / size; |
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mousedev->packet.abs_event = 1; break; case ABS_Y: |
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min = input_abs_get_min(dev, ABS_Y); max = input_abs_get_max(dev, ABS_Y); size = max - min; |
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if (size == 0) size = yres ? : 1; |
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|
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value = clamp(value, min, max); |
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mousedev->packet.y = yres - ((value - min) * yres) / size; |
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mousedev->packet.abs_event = 1; break; |
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} } |
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static void mousedev_rel_event(struct mousedev *mousedev, unsigned int code, int value) |
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{ switch (code) { |
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case REL_X: mousedev->packet.dx += value; break; case REL_Y: mousedev->packet.dy -= value; break; case REL_WHEEL: mousedev->packet.dz -= value; break; |
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} } |
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static void mousedev_key_event(struct mousedev *mousedev, unsigned int code, int value) |
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{ int index; switch (code) { |
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case BTN_TOUCH: case BTN_0: case BTN_LEFT: index = 0; break; case BTN_STYLUS: case BTN_1: case BTN_RIGHT: index = 1; break; case BTN_2: case BTN_FORWARD: case BTN_STYLUS2: case BTN_MIDDLE: index = 2; break; case BTN_3: case BTN_BACK: case BTN_SIDE: index = 3; break; case BTN_4: case BTN_EXTRA: index = 4; break; default: return; |
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} if (value) { set_bit(index, &mousedev->packet.buttons); |
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set_bit(index, &mousedev_mix->packet.buttons); |
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} else { clear_bit(index, &mousedev->packet.buttons); |
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clear_bit(index, &mousedev_mix->packet.buttons); |
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} } |
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static void mousedev_notify_readers(struct mousedev *mousedev, struct mousedev_hw_data *packet) |
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{ |
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struct mousedev_client *client; |
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struct mousedev_motion *p; |
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unsigned int new_head; |
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int wake_readers = 0; |
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|
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rcu_read_lock(); |
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list_for_each_entry_rcu(client, &mousedev->client_list, node) { /* Just acquire the lock, interrupts already disabled */ spin_lock(&client->packet_lock); |
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|
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p = &client->packets[client->head]; if (client->ready && p->buttons != mousedev->packet.buttons) { |
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new_head = (client->head + 1) % PACKET_QUEUE_LEN; |
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if (new_head != client->tail) { p = &client->packets[client->head = new_head]; |
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memset(p, 0, sizeof(struct mousedev_motion)); } } if (packet->abs_event) { |
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p->dx += packet->x - client->pos_x; p->dy += packet->y - client->pos_y; client->pos_x = packet->x; client->pos_y = packet->y; |
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} |
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client->pos_x += packet->dx; |
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client->pos_x = client->pos_x < 0 ? 0 : (client->pos_x >= xres ? xres : client->pos_x); |
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client->pos_y += packet->dy; |
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client->pos_y = client->pos_y < 0 ? 0 : (client->pos_y >= yres ? yres : client->pos_y); |
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p->dx += packet->dx; p->dy += packet->dy; p->dz += packet->dz; p->buttons = mousedev->packet.buttons; |
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if (p->dx || p->dy || p->dz || p->buttons != client->last_buttons) |
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client->ready = 1; |
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|
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spin_unlock(&client->packet_lock); |
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if (client->ready) { kill_fasync(&client->fasync, SIGIO, POLL_IN); |
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wake_readers = 1; } |
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} |
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rcu_read_unlock(); |
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|
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if (wake_readers) wake_up_interruptible(&mousedev->wait); |
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} static void mousedev_touchpad_touch(struct mousedev *mousedev, int value) { if (!value) { if (mousedev->touch && |
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time_before(jiffies, mousedev->touch + msecs_to_jiffies(tap_time))) { |
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/* * Toggle left button to emulate tap. * We rely on the fact that mousedev_mix always has 0 * motion packet so we won't mess current position. */ set_bit(0, &mousedev->packet.buttons); |
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set_bit(0, &mousedev_mix->packet.buttons); mousedev_notify_readers(mousedev, &mousedev_mix->packet); |
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mousedev_notify_readers(mousedev_mix, &mousedev_mix->packet); |
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clear_bit(0, &mousedev->packet.buttons); |
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clear_bit(0, &mousedev_mix->packet.buttons); |
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} mousedev->touch = mousedev->pkt_count = 0; mousedev->frac_dx = 0; mousedev->frac_dy = 0; |
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} else if (!mousedev->touch) mousedev->touch = jiffies; |
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} |
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static void mousedev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value) |
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{ struct mousedev *mousedev = handle->private; switch (type) { |
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|
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case EV_ABS: /* Ignore joysticks */ if (test_bit(BTN_TRIGGER, handle->dev->keybit)) return; |
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|
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if (test_bit(BTN_TOOL_FINGER, handle->dev->keybit)) mousedev_touchpad_event(handle->dev, mousedev, code, value); else mousedev_abs_event(handle->dev, mousedev, code, value); |
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|
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break; |
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case EV_REL: mousedev_rel_event(mousedev, code, value); break; |
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|
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case EV_KEY: if (value != 2) { if (code == BTN_TOUCH && test_bit(BTN_TOOL_FINGER, handle->dev->keybit)) mousedev_touchpad_touch(mousedev, value); else mousedev_key_event(mousedev, code, value); } break; case EV_SYN: if (code == SYN_REPORT) { if (mousedev->touch) { mousedev->pkt_count++; /* * Input system eats duplicate events, * but we need all of them to do correct * averaging so apply present one forward */ fx(0) = fx(1); fy(0) = fy(1); |
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} |
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mousedev_notify_readers(mousedev, &mousedev->packet); mousedev_notify_readers(mousedev_mix, &mousedev->packet); mousedev->packet.dx = mousedev->packet.dy = mousedev->packet.dz = 0; mousedev->packet.abs_event = 0; } break; |
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} } static int mousedev_fasync(int fd, struct file *file, int on) { |
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struct mousedev_client *client = file->private_data; |
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return fasync_helper(fd, file, on, &client->fasync); |
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} |
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static void mousedev_free(struct device *dev) |
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{ |
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struct mousedev *mousedev = container_of(dev, struct mousedev, dev); |
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input_put_device(mousedev->handle.dev); |
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kfree(mousedev); } |
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static int mousedev_open_device(struct mousedev *mousedev) |
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{ |
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int retval; |
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retval = mutex_lock_interruptible(&mousedev->mutex); if (retval) return retval; |
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|
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if (mousedev->minor == MOUSEDEV_MIX) mixdev_open_devices(); else if (!mousedev->exist) retval = -ENODEV; |
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else if (!mousedev->open++) { |
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retval = input_open_device(&mousedev->handle); |
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if (retval) mousedev->open--; } |
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mutex_unlock(&mousedev->mutex); return retval; |
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} |
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static void mousedev_close_device(struct mousedev *mousedev) |
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{ |
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mutex_lock(&mousedev->mutex); |
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|
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if (mousedev->minor == MOUSEDEV_MIX) mixdev_close_devices(); else if (mousedev->exist && !--mousedev->open) input_close_device(&mousedev->handle); mutex_unlock(&mousedev->mutex); |
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} |
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/* * Open all available devices so they can all be multiplexed in one. * stream. Note that this function is called with mousedev_mix->mutex * held. */ |
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static void mixdev_open_devices(void) { struct mousedev *mousedev; |
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if (mousedev_mix->open++) return; |
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list_for_each_entry(mousedev, &mousedev_mix_list, mixdev_node) { |
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if (!mousedev->mixdev_open) { |
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if (mousedev_open_device(mousedev)) continue; |
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|
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mousedev->mixdev_open = 1; |
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} } |
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} |
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/* * Close all devices that were opened as part of multiplexed * device. Note that this function is called with mousedev_mix->mutex * held. */ |
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static void mixdev_close_devices(void) |
1da177e4c Linux-2.6.12-rc2 |
468 |
{ |
9657d75c5 Input: convert fr... |
469 |
struct mousedev *mousedev; |
d542ed82f Input: handlers -... |
470 |
|
9657d75c5 Input: convert fr... |
471 472 473 474 |
if (--mousedev_mix->open) return; list_for_each_entry(mousedev, &mousedev_mix_list, mixdev_node) { |
d542ed82f Input: handlers -... |
475 476 |
if (mousedev->mixdev_open) { mousedev->mixdev_open = 0; |
464b24157 Input: mousedev -... |
477 |
mousedev_close_device(mousedev); |
1da177e4c Linux-2.6.12-rc2 |
478 479 |
} } |
1da177e4c Linux-2.6.12-rc2 |
480 |
} |
464b24157 Input: mousedev -... |
481 482 483 484 485 486 487 |
static void mousedev_attach_client(struct mousedev *mousedev, struct mousedev_client *client) { spin_lock(&mousedev->client_lock); list_add_tail_rcu(&client->node, &mousedev->client_list); spin_unlock(&mousedev->client_lock); |
464b24157 Input: mousedev -... |
488 489 490 491 492 493 494 495 |
} static void mousedev_detach_client(struct mousedev *mousedev, struct mousedev_client *client) { spin_lock(&mousedev->client_lock); list_del_rcu(&client->node); spin_unlock(&mousedev->client_lock); |
82ba56c27 Input: use full R... |
496 |
synchronize_rcu(); |
464b24157 Input: mousedev -... |
497 |
} |
d0ffb9be8 Input: handlers -... |
498 |
static int mousedev_release(struct inode *inode, struct file *file) |
1da177e4c Linux-2.6.12-rc2 |
499 |
{ |
d0ffb9be8 Input: handlers -... |
500 501 |
struct mousedev_client *client = file->private_data; struct mousedev *mousedev = client->mousedev; |
1da177e4c Linux-2.6.12-rc2 |
502 |
|
464b24157 Input: mousedev -... |
503 |
mousedev_detach_client(mousedev, client); |
d0ffb9be8 Input: handlers -... |
504 |
kfree(client); |
1da177e4c Linux-2.6.12-rc2 |
505 |
|
464b24157 Input: mousedev -... |
506 |
mousedev_close_device(mousedev); |
9657d75c5 Input: convert fr... |
507 |
put_device(&mousedev->dev); |
1da177e4c Linux-2.6.12-rc2 |
508 |
|
1da177e4c Linux-2.6.12-rc2 |
509 510 |
return 0; } |
d0ffb9be8 Input: handlers -... |
511 |
static int mousedev_open(struct inode *inode, struct file *file) |
1da177e4c Linux-2.6.12-rc2 |
512 |
{ |
d0ffb9be8 Input: handlers -... |
513 |
struct mousedev_client *client; |
1da177e4c Linux-2.6.12-rc2 |
514 |
struct mousedev *mousedev; |
d542ed82f Input: handlers -... |
515 |
int error; |
1da177e4c Linux-2.6.12-rc2 |
516 517 518 519 520 521 522 523 |
int i; #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX if (imajor(inode) == MISC_MAJOR) i = MOUSEDEV_MIX; else #endif i = iminor(inode) - MOUSEDEV_MINOR_BASE; |
d0ffb9be8 Input: handlers -... |
524 |
if (i >= MOUSEDEV_MINORS) |
1da177e4c Linux-2.6.12-rc2 |
525 |
return -ENODEV; |
464b24157 Input: mousedev -... |
526 |
error = mutex_lock_interruptible(&mousedev_table_mutex); |
f9c8154f3 mousedev: BKL pus... |
527 |
if (error) { |
464b24157 Input: mousedev -... |
528 |
return error; |
f9c8154f3 mousedev: BKL pus... |
529 |
} |
d0ffb9be8 Input: handlers -... |
530 |
mousedev = mousedev_table[i]; |
464b24157 Input: mousedev -... |
531 532 533 |
if (mousedev) get_device(&mousedev->dev); mutex_unlock(&mousedev_table_mutex); |
f9c8154f3 mousedev: BKL pus... |
534 |
if (!mousedev) { |
1da177e4c Linux-2.6.12-rc2 |
535 |
return -ENODEV; |
f9c8154f3 mousedev: BKL pus... |
536 |
} |
1da177e4c Linux-2.6.12-rc2 |
537 |
|
d0ffb9be8 Input: handlers -... |
538 |
client = kzalloc(sizeof(struct mousedev_client), GFP_KERNEL); |
9657d75c5 Input: convert fr... |
539 540 541 542 |
if (!client) { error = -ENOMEM; goto err_put_mousedev; } |
1da177e4c Linux-2.6.12-rc2 |
543 |
|
d0ffb9be8 Input: handlers -... |
544 545 546 547 |
spin_lock_init(&client->packet_lock); client->pos_x = xres / 2; client->pos_y = yres / 2; client->mousedev = mousedev; |
464b24157 Input: mousedev -... |
548 |
mousedev_attach_client(mousedev, client); |
1da177e4c Linux-2.6.12-rc2 |
549 |
|
464b24157 Input: mousedev -... |
550 551 552 |
error = mousedev_open_device(mousedev); if (error) goto err_free_client; |
1da177e4c Linux-2.6.12-rc2 |
553 |
|
d0ffb9be8 Input: handlers -... |
554 |
file->private_data = client; |
1da177e4c Linux-2.6.12-rc2 |
555 |
return 0; |
9657d75c5 Input: convert fr... |
556 557 |
err_free_client: |
464b24157 Input: mousedev -... |
558 |
mousedev_detach_client(mousedev, client); |
9657d75c5 Input: convert fr... |
559 560 561 562 |
kfree(client); err_put_mousedev: put_device(&mousedev->dev); return error; |
1da177e4c Linux-2.6.12-rc2 |
563 564 565 566 567 568 |
} static inline int mousedev_limit_delta(int delta, int limit) { return delta > limit ? limit : (delta < -limit ? -limit : delta); } |
464b24157 Input: mousedev -... |
569 570 |
static void mousedev_packet(struct mousedev_client *client, signed char *ps2_data) |
1da177e4c Linux-2.6.12-rc2 |
571 |
{ |
464b24157 Input: mousedev -... |
572 |
struct mousedev_motion *p = &client->packets[client->tail]; |
1da177e4c Linux-2.6.12-rc2 |
573 |
|
464b24157 Input: mousedev -... |
574 575 |
ps2_data[0] = 0x08 | ((p->dx < 0) << 4) | ((p->dy < 0) << 5) | (p->buttons & 0x07); |
1da177e4c Linux-2.6.12-rc2 |
576 577 578 579 |
ps2_data[1] = mousedev_limit_delta(p->dx, 127); ps2_data[2] = mousedev_limit_delta(p->dy, 127); p->dx -= ps2_data[1]; p->dy -= ps2_data[2]; |
d0ffb9be8 Input: handlers -... |
580 |
switch (client->mode) { |
464b24157 Input: mousedev -... |
581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 |
case MOUSEDEV_EMUL_EXPS: ps2_data[3] = mousedev_limit_delta(p->dz, 7); p->dz -= ps2_data[3]; ps2_data[3] = (ps2_data[3] & 0x0f) | ((p->buttons & 0x18) << 1); client->bufsiz = 4; break; case MOUSEDEV_EMUL_IMPS: ps2_data[0] |= ((p->buttons & 0x10) >> 3) | ((p->buttons & 0x08) >> 1); ps2_data[3] = mousedev_limit_delta(p->dz, 127); p->dz -= ps2_data[3]; client->bufsiz = 4; break; case MOUSEDEV_EMUL_PS2: default: ps2_data[0] |= ((p->buttons & 0x10) >> 3) | ((p->buttons & 0x08) >> 1); p->dz = 0; client->bufsiz = 3; break; |
1da177e4c Linux-2.6.12-rc2 |
603 604 605 |
} if (!p->dx && !p->dy && !p->dz) { |
d0ffb9be8 Input: handlers -... |
606 607 608 |
if (client->tail == client->head) { client->ready = 0; client->last_buttons = p->buttons; |
c1e4c8d3e [PATCH] fix jumpy... |
609 |
} else |
d0ffb9be8 Input: handlers -... |
610 |
client->tail = (client->tail + 1) % PACKET_QUEUE_LEN; |
1da177e4c Linux-2.6.12-rc2 |
611 |
} |
1da177e4c Linux-2.6.12-rc2 |
612 |
} |
464b24157 Input: mousedev -... |
613 614 615 616 |
static void mousedev_generate_response(struct mousedev_client *client, int command) { client->ps2[0] = 0xfa; /* ACK */ |
1da177e4c Linux-2.6.12-rc2 |
617 |
|
464b24157 Input: mousedev -... |
618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 |
switch (command) { case 0xeb: /* Poll */ mousedev_packet(client, &client->ps2[1]); client->bufsiz++; /* account for leading ACK */ break; case 0xf2: /* Get ID */ switch (client->mode) { case MOUSEDEV_EMUL_PS2: client->ps2[1] = 0; break; case MOUSEDEV_EMUL_IMPS: client->ps2[1] = 3; break; case MOUSEDEV_EMUL_EXPS: client->ps2[1] = 4; break; } client->bufsiz = 2; break; case 0xe9: /* Get info */ client->ps2[1] = 0x60; client->ps2[2] = 3; client->ps2[3] = 200; client->bufsiz = 4; break; case 0xff: /* Reset */ client->impsseq = client->imexseq = 0; client->mode = MOUSEDEV_EMUL_PS2; client->ps2[1] = 0xaa; client->ps2[2] = 0x00; client->bufsiz = 3; break; default: client->bufsiz = 1; break; } client->buffer = client->bufsiz; } static ssize_t mousedev_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) |
1da177e4c Linux-2.6.12-rc2 |
661 |
{ |
d0ffb9be8 Input: handlers -... |
662 |
struct mousedev_client *client = file->private_data; |
1da177e4c Linux-2.6.12-rc2 |
663 664 665 666 667 668 669 |
unsigned char c; unsigned int i; for (i = 0; i < count; i++) { if (get_user(c, buffer + i)) return -EFAULT; |
464b24157 Input: mousedev -... |
670 |
spin_lock_irq(&client->packet_lock); |
d0ffb9be8 Input: handlers -... |
671 672 673 674 |
if (c == mousedev_imex_seq[client->imexseq]) { if (++client->imexseq == MOUSEDEV_SEQ_LEN) { client->imexseq = 0; client->mode = MOUSEDEV_EMUL_EXPS; |
1da177e4c Linux-2.6.12-rc2 |
675 |
} |
1e0afb288 Input: fix format... |
676 |
} else |
d0ffb9be8 Input: handlers -... |
677 |
client->imexseq = 0; |
1da177e4c Linux-2.6.12-rc2 |
678 |
|
d0ffb9be8 Input: handlers -... |
679 680 681 682 |
if (c == mousedev_imps_seq[client->impsseq]) { if (++client->impsseq == MOUSEDEV_SEQ_LEN) { client->impsseq = 0; client->mode = MOUSEDEV_EMUL_IMPS; |
1da177e4c Linux-2.6.12-rc2 |
683 |
} |
1e0afb288 Input: fix format... |
684 |
} else |
d0ffb9be8 Input: handlers -... |
685 |
client->impsseq = 0; |
1da177e4c Linux-2.6.12-rc2 |
686 |
|
464b24157 Input: mousedev -... |
687 |
mousedev_generate_response(client, c); |
1da177e4c Linux-2.6.12-rc2 |
688 |
|
464b24157 Input: mousedev -... |
689 |
spin_unlock_irq(&client->packet_lock); |
1da177e4c Linux-2.6.12-rc2 |
690 |
} |
d0ffb9be8 Input: handlers -... |
691 |
kill_fasync(&client->fasync, SIGIO, POLL_IN); |
d0ffb9be8 Input: handlers -... |
692 |
wake_up_interruptible(&client->mousedev->wait); |
1da177e4c Linux-2.6.12-rc2 |
693 694 695 |
return count; } |
464b24157 Input: mousedev -... |
696 697 |
static ssize_t mousedev_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos) |
1da177e4c Linux-2.6.12-rc2 |
698 |
{ |
d0ffb9be8 Input: handlers -... |
699 |
struct mousedev_client *client = file->private_data; |
464b24157 Input: mousedev -... |
700 701 |
struct mousedev *mousedev = client->mousedev; signed char data[sizeof(client->ps2)]; |
1da177e4c Linux-2.6.12-rc2 |
702 |
int retval = 0; |
464b24157 Input: mousedev -... |
703 704 |
if (!client->ready && !client->buffer && mousedev->exist && (file->f_flags & O_NONBLOCK)) |
1da177e4c Linux-2.6.12-rc2 |
705 |
return -EAGAIN; |
464b24157 Input: mousedev -... |
706 707 |
retval = wait_event_interruptible(mousedev->wait, !mousedev->exist || client->ready || client->buffer); |
1da177e4c Linux-2.6.12-rc2 |
708 709 |
if (retval) return retval; |
464b24157 Input: mousedev -... |
710 |
if (!mousedev->exist) |
1da177e4c Linux-2.6.12-rc2 |
711 |
return -ENODEV; |
464b24157 Input: mousedev -... |
712 |
spin_lock_irq(&client->packet_lock); |
d0ffb9be8 Input: handlers -... |
713 714 715 |
if (!client->buffer && client->ready) { mousedev_packet(client, client->ps2); client->buffer = client->bufsiz; |
1da177e4c Linux-2.6.12-rc2 |
716 |
} |
d0ffb9be8 Input: handlers -... |
717 718 |
if (count > client->buffer) count = client->buffer; |
1da177e4c Linux-2.6.12-rc2 |
719 |
|
464b24157 Input: mousedev -... |
720 |
memcpy(data, client->ps2 + client->bufsiz - client->buffer, count); |
d0ffb9be8 Input: handlers -... |
721 |
client->buffer -= count; |
1da177e4c Linux-2.6.12-rc2 |
722 |
|
464b24157 Input: mousedev -... |
723 724 725 |
spin_unlock_irq(&client->packet_lock); if (copy_to_user(buffer, data, count)) |
1da177e4c Linux-2.6.12-rc2 |
726 727 728 729 730 731 732 733 |
return -EFAULT; return count; } /* No kernel lock - fine */ static unsigned int mousedev_poll(struct file *file, poll_table *wait) { |
d0ffb9be8 Input: handlers -... |
734 735 |
struct mousedev_client *client = file->private_data; struct mousedev *mousedev = client->mousedev; |
4d4bf995e Input: mousedev -... |
736 |
unsigned int mask; |
1e0afb288 Input: fix format... |
737 |
|
d0ffb9be8 Input: handlers -... |
738 |
poll_wait(file, &mousedev->wait, wait); |
4d4bf995e Input: mousedev -... |
739 740 741 742 743 744 |
mask = mousedev->exist ? POLLOUT | POLLWRNORM : POLLHUP | POLLERR; if (client->ready || client->buffer) mask |= POLLIN | POLLRDNORM; return mask; |
1da177e4c Linux-2.6.12-rc2 |
745 |
} |
66e661188 Input: constify i... |
746 |
static const struct file_operations mousedev_fops = { |
1da177e4c Linux-2.6.12-rc2 |
747 748 749 750 751 752 753 |
.owner = THIS_MODULE, .read = mousedev_read, .write = mousedev_write, .poll = mousedev_poll, .open = mousedev_open, .release = mousedev_release, .fasync = mousedev_fasync, |
6038f373a llseek: automatic... |
754 |
.llseek = noop_llseek, |
1da177e4c Linux-2.6.12-rc2 |
755 |
}; |
464b24157 Input: mousedev -... |
756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 |
static int mousedev_install_chrdev(struct mousedev *mousedev) { mousedev_table[mousedev->minor] = mousedev; return 0; } static void mousedev_remove_chrdev(struct mousedev *mousedev) { mutex_lock(&mousedev_table_mutex); mousedev_table[mousedev->minor] = NULL; mutex_unlock(&mousedev_table_mutex); } /* * Mark device non-existent. This disables writes, ioctls and * prevents new users from opening the device. Already posted * blocking reads will stay, however new ones will fail. */ static void mousedev_mark_dead(struct mousedev *mousedev) { mutex_lock(&mousedev->mutex); |
20da92de8 Input: change inp... |
777 |
mousedev->exist = false; |
464b24157 Input: mousedev -... |
778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 |
mutex_unlock(&mousedev->mutex); } /* * Wake up users waiting for IO so they can disconnect from * dead device. */ static void mousedev_hangup(struct mousedev *mousedev) { struct mousedev_client *client; spin_lock(&mousedev->client_lock); list_for_each_entry(client, &mousedev->client_list, node) kill_fasync(&client->fasync, SIGIO, POLL_HUP); spin_unlock(&mousedev->client_lock); wake_up_interruptible(&mousedev->wait); } static void mousedev_cleanup(struct mousedev *mousedev) { struct input_handle *handle = &mousedev->handle; mousedev_mark_dead(mousedev); mousedev_hangup(mousedev); mousedev_remove_chrdev(mousedev); /* mousedev is marked dead so no one else accesses mousedev->open */ if (mousedev->open) input_close_device(handle); } |
9657d75c5 Input: convert fr... |
809 810 811 |
static struct mousedev *mousedev_create(struct input_dev *dev, struct input_handler *handler, int minor) |
1da177e4c Linux-2.6.12-rc2 |
812 813 |
{ struct mousedev *mousedev; |
5b2a08262 Input: rework han... |
814 |
int error; |
1da177e4c Linux-2.6.12-rc2 |
815 |
|
5b2a08262 Input: rework han... |
816 |
mousedev = kzalloc(sizeof(struct mousedev), GFP_KERNEL); |
9657d75c5 Input: convert fr... |
817 818 819 820 |
if (!mousedev) { error = -ENOMEM; goto err_out; } |
1da177e4c Linux-2.6.12-rc2 |
821 |
|
d0ffb9be8 Input: handlers -... |
822 |
INIT_LIST_HEAD(&mousedev->client_list); |
5b2a08262 Input: rework han... |
823 |
INIT_LIST_HEAD(&mousedev->mixdev_node); |
464b24157 Input: mousedev -... |
824 825 826 |
spin_lock_init(&mousedev->client_lock); mutex_init(&mousedev->mutex); lockdep_set_subclass(&mousedev->mutex, |
f74eef95e Input: mousedev -... |
827 |
minor == MOUSEDEV_MIX ? SINGLE_DEPTH_NESTING : 0); |
1da177e4c Linux-2.6.12-rc2 |
828 |
init_waitqueue_head(&mousedev->wait); |
9657d75c5 Input: convert fr... |
829 |
if (minor == MOUSEDEV_MIX) |
3d5cb60ef Input: simplify n... |
830 |
dev_set_name(&mousedev->dev, "mice"); |
9657d75c5 Input: convert fr... |
831 |
else |
3d5cb60ef Input: simplify n... |
832 |
dev_set_name(&mousedev->dev, "mouse%d", minor); |
9657d75c5 Input: convert fr... |
833 |
|
1da177e4c Linux-2.6.12-rc2 |
834 |
mousedev->minor = minor; |
20da92de8 Input: change inp... |
835 |
mousedev->exist = true; |
a7097ff89 Input: make sure ... |
836 |
mousedev->handle.dev = input_get_device(dev); |
3d5cb60ef Input: simplify n... |
837 |
mousedev->handle.name = dev_name(&mousedev->dev); |
1da177e4c Linux-2.6.12-rc2 |
838 839 |
mousedev->handle.handler = handler; mousedev->handle.private = mousedev; |
1da177e4c Linux-2.6.12-rc2 |
840 |
|
9657d75c5 Input: convert fr... |
841 842 843 844 845 846 |
mousedev->dev.class = &input_class; if (dev) mousedev->dev.parent = &dev->dev; mousedev->dev.devt = MKDEV(INPUT_MAJOR, MOUSEDEV_MINOR_BASE + minor); mousedev->dev.release = mousedev_free; device_initialize(&mousedev->dev); |
1da177e4c Linux-2.6.12-rc2 |
847 |
|
464b24157 Input: mousedev -... |
848 849 850 851 852 853 854 855 856 |
if (minor != MOUSEDEV_MIX) { error = input_register_handle(&mousedev->handle); if (error) goto err_free_mousedev; } error = mousedev_install_chrdev(mousedev); if (error) goto err_unregister_handle; |
5b2a08262 Input: rework han... |
857 |
|
9657d75c5 Input: convert fr... |
858 859 |
error = device_add(&mousedev->dev); if (error) |
464b24157 Input: mousedev -... |
860 |
goto err_cleanup_mousedev; |
9657d75c5 Input: convert fr... |
861 862 |
return mousedev; |
464b24157 Input: mousedev -... |
863 864 865 866 867 |
err_cleanup_mousedev: mousedev_cleanup(mousedev); err_unregister_handle: if (minor != MOUSEDEV_MIX) input_unregister_handle(&mousedev->handle); |
9657d75c5 Input: convert fr... |
868 869 870 871 872 873 874 875 |
err_free_mousedev: put_device(&mousedev->dev); err_out: return ERR_PTR(error); } static void mousedev_destroy(struct mousedev *mousedev) { |
9657d75c5 Input: convert fr... |
876 |
device_del(&mousedev->dev); |
464b24157 Input: mousedev -... |
877 878 879 880 881 |
mousedev_cleanup(mousedev); if (mousedev->minor != MOUSEDEV_MIX) input_unregister_handle(&mousedev->handle); put_device(&mousedev->dev); } |
9657d75c5 Input: convert fr... |
882 |
|
464b24157 Input: mousedev -... |
883 884 885 886 887 888 889 890 891 892 893 894 895 896 |
static int mixdev_add_device(struct mousedev *mousedev) { int retval; retval = mutex_lock_interruptible(&mousedev_mix->mutex); if (retval) return retval; if (mousedev_mix->open) { retval = mousedev_open_device(mousedev); if (retval) goto out; mousedev->mixdev_open = 1; |
5b2a08262 Input: rework han... |
897 |
} |
c9bcd582d [PATCH] INPUT: Cr... |
898 |
|
464b24157 Input: mousedev -... |
899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 |
get_device(&mousedev->dev); list_add_tail(&mousedev->mixdev_node, &mousedev_mix_list); out: mutex_unlock(&mousedev_mix->mutex); return retval; } static void mixdev_remove_device(struct mousedev *mousedev) { mutex_lock(&mousedev_mix->mutex); if (mousedev->mixdev_open) { mousedev->mixdev_open = 0; mousedev_close_device(mousedev); } list_del_init(&mousedev->mixdev_node); mutex_unlock(&mousedev_mix->mutex); |
9657d75c5 Input: convert fr... |
918 919 |
put_device(&mousedev->dev); } |
464b24157 Input: mousedev -... |
920 921 |
static int mousedev_connect(struct input_handler *handler, struct input_dev *dev, |
9657d75c5 Input: convert fr... |
922 923 924 925 926 |
const struct input_device_id *id) { struct mousedev *mousedev; int minor; int error; |
464b24157 Input: mousedev -... |
927 928 929 |
for (minor = 0; minor < MOUSEDEV_MINORS; minor++) if (!mousedev_table[minor]) break; |
9657d75c5 Input: convert fr... |
930 |
if (minor == MOUSEDEV_MINORS) { |
da0c49011 Input: use pr_fmt... |
931 932 |
pr_err("no more free mousedev devices "); |
9657d75c5 Input: convert fr... |
933 934 935 936 937 938 |
return -ENFILE; } mousedev = mousedev_create(dev, handler, minor); if (IS_ERR(mousedev)) return PTR_ERR(mousedev); |
5b2a08262 Input: rework han... |
939 |
|
d542ed82f Input: handlers -... |
940 |
error = mixdev_add_device(mousedev); |
464b24157 Input: mousedev -... |
941 942 943 944 |
if (error) { mousedev_destroy(mousedev); return error; } |
1da177e4c Linux-2.6.12-rc2 |
945 |
|
5b2a08262 Input: rework han... |
946 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
947 948 949 950 951 |
} static void mousedev_disconnect(struct input_handle *handle) { struct mousedev *mousedev = handle->private; |
1da177e4c Linux-2.6.12-rc2 |
952 |
|
d542ed82f Input: handlers -... |
953 |
mixdev_remove_device(mousedev); |
9657d75c5 Input: convert fr... |
954 |
mousedev_destroy(mousedev); |
1da177e4c Linux-2.6.12-rc2 |
955 |
} |
66e661188 Input: constify i... |
956 |
static const struct input_device_id mousedev_ids[] = { |
1da177e4c Linux-2.6.12-rc2 |
957 |
{ |
464b24157 Input: mousedev -... |
958 959 960 |
.flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT | INPUT_DEVICE_ID_MATCH_RELBIT, |
7b19ada2e get rid of input ... |
961 962 963 |
.evbit = { BIT_MASK(EV_KEY) | BIT_MASK(EV_REL) }, .keybit = { [BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) }, .relbit = { BIT_MASK(REL_X) | BIT_MASK(REL_Y) }, |
464b24157 Input: mousedev -... |
964 965 |
}, /* A mouse like device, at least one button, two relative axes */ |
1da177e4c Linux-2.6.12-rc2 |
966 |
{ |
464b24157 Input: mousedev -... |
967 968 |
.flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_RELBIT, |
7b19ada2e get rid of input ... |
969 970 |
.evbit = { BIT_MASK(EV_KEY) | BIT_MASK(EV_REL) }, .relbit = { BIT_MASK(REL_WHEEL) }, |
1da177e4c Linux-2.6.12-rc2 |
971 972 |
}, /* A separate scrollwheel */ { |
464b24157 Input: mousedev -... |
973 974 975 |
.flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT | INPUT_DEVICE_ID_MATCH_ABSBIT, |
7b19ada2e get rid of input ... |
976 977 978 |
.evbit = { BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) }, .keybit = { [BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH) }, .absbit = { BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) }, |
464b24157 Input: mousedev -... |
979 980 |
}, /* A tablet like device, at least touch detection, two absolute axes */ |
1da177e4c Linux-2.6.12-rc2 |
981 |
{ |
464b24157 Input: mousedev -... |
982 983 984 |
.flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT | INPUT_DEVICE_ID_MATCH_ABSBIT, |
7b19ada2e get rid of input ... |
985 986 987 988 989 990 |
.evbit = { BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) }, .keybit = { [BIT_WORD(BTN_TOOL_FINGER)] = BIT_MASK(BTN_TOOL_FINGER) }, .absbit = { BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) | BIT_MASK(ABS_PRESSURE) | BIT_MASK(ABS_TOOL_WIDTH) }, |
1da177e4c Linux-2.6.12-rc2 |
991 |
}, /* A touchpad */ |
6724f9346 Input: mousedev -... |
992 993 994 995 |
{ .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT | INPUT_DEVICE_ID_MATCH_ABSBIT, |
d182c10c8 Input: mousedev -... |
996 |
.evbit = { BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) }, |
6724f9346 Input: mousedev -... |
997 998 999 1000 |
.keybit = { [BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) }, .absbit = { BIT_MASK(ABS_X) | BIT_MASK(ABS_Y) }, }, /* Mouse-like device with absolute X and Y but ordinary clicks, like hp ILO2 High Performance mouse */ |
1da177e4c Linux-2.6.12-rc2 |
1001 |
|
d0ffb9be8 Input: handlers -... |
1002 |
{ }, /* Terminating entry */ |
1da177e4c Linux-2.6.12-rc2 |
1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 |
}; MODULE_DEVICE_TABLE(input, mousedev_ids); static struct input_handler mousedev_handler = { .event = mousedev_event, .connect = mousedev_connect, .disconnect = mousedev_disconnect, .fops = &mousedev_fops, .minor = MOUSEDEV_MINOR_BASE, .name = "mousedev", .id_table = mousedev_ids, }; #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX static struct miscdevice psaux_mouse = { PSMOUSE_MINOR, "psaux", &mousedev_fops }; static int psaux_registered; #endif static int __init mousedev_init(void) { |
4263cf0fa Input: make input... |
1026 |
int error; |
9657d75c5 Input: convert fr... |
1027 1028 1029 |
mousedev_mix = mousedev_create(NULL, &mousedev_handler, MOUSEDEV_MIX); if (IS_ERR(mousedev_mix)) return PTR_ERR(mousedev_mix); |
4263cf0fa Input: make input... |
1030 |
error = input_register_handler(&mousedev_handler); |
9657d75c5 Input: convert fr... |
1031 1032 |
if (error) { mousedev_destroy(mousedev_mix); |
4263cf0fa Input: make input... |
1033 |
return error; |
4263cf0fa Input: make input... |
1034 |
} |
1da177e4c Linux-2.6.12-rc2 |
1035 1036 |
#ifdef CONFIG_INPUT_MOUSEDEV_PSAUX |
4263cf0fa Input: make input... |
1037 1038 |
error = misc_register(&psaux_mouse); if (error) |
da0c49011 Input: use pr_fmt... |
1039 1040 1041 |
pr_warning("could not register psaux device, error: %d ", error); |
4263cf0fa Input: make input... |
1042 1043 |
else psaux_registered = 1; |
1da177e4c Linux-2.6.12-rc2 |
1044 |
#endif |
da0c49011 Input: use pr_fmt... |
1045 1046 |
pr_info("PS/2 mouse device common for all mice "); |
1da177e4c Linux-2.6.12-rc2 |
1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 |
return 0; } static void __exit mousedev_exit(void) { #ifdef CONFIG_INPUT_MOUSEDEV_PSAUX if (psaux_registered) misc_deregister(&psaux_mouse); #endif |
1da177e4c Linux-2.6.12-rc2 |
1057 |
input_unregister_handler(&mousedev_handler); |
9657d75c5 Input: convert fr... |
1058 |
mousedev_destroy(mousedev_mix); |
1da177e4c Linux-2.6.12-rc2 |
1059 1060 1061 1062 |
} module_init(mousedev_init); module_exit(mousedev_exit); |