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kernel_linux
提交 d0ffb9be 编写于 作者: D Dmitry Torokhov
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Input: handlers - rename 'list' to 'client' 

The naming convention in input handlers was very confusing -
client stuctures were called lists, regular lists were also
called lists making anyone looking at the code go mad.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
上级 5b2a0826
隐藏空白更改
内联 并排
Showing with 329 addition and 298 deletion
drivers/input/evdev.c
浏览文件 @ d0ffb9be
......@@ -29,11 +29,11 @@ struct evdev {
char name[16];
struct input_handle handle;
wait_queue_head_t wait;
struct evdev_list *grab;
struct list_head list;
struct evdev_client *grab;
struct list_head client_list;
};
struct evdev_list {
struct evdev_client {
struct input_event buffer[EVDEV_BUFFER_SIZE];
int head;
int tail;
......@@ -47,28 +47,28 @@ static struct evdev *evdev_table[EVDEV_MINORS];
static void evdev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
{
struct evdev *evdev = handle->private;
struct evdev_list *list;
struct evdev_client *client;
if (evdev->grab) {
list = evdev->grab;
client = evdev->grab;
do_gettimeofday(&list->buffer[list->head].time);
list->buffer[list->head].type = type;
list->buffer[list->head].code = code;
list->buffer[list->head].value = value;
list->head = (list->head + 1) & (EVDEV_BUFFER_SIZE - 1);
do_gettimeofday(&client->buffer[client->head].time);
client->buffer[client->head].type = type;
client->buffer[client->head].code = code;
client->buffer[client->head].value = value;
client->head = (client->head + 1) & (EVDEV_BUFFER_SIZE - 1);
kill_fasync(&list->fasync, SIGIO, POLL_IN);
kill_fasync(&client->fasync, SIGIO, POLL_IN);
} else
list_for_each_entry(list, &evdev->list, node) {
list_for_each_entry(client, &evdev->client_list, node) {
do_gettimeofday(&list->buffer[list->head].time);
list->buffer[list->head].type = type;
list->buffer[list->head].code = code;
list->buffer[list->head].value = value;
list->head = (list->head + 1) & (EVDEV_BUFFER_SIZE - 1);
do_gettimeofday(&client->buffer[client->head].time);
client->buffer[client->head].type = type;
client->buffer[client->head].code = code;
client->buffer[client->head].value = value;
client->head = (client->head + 1) & (EVDEV_BUFFER_SIZE - 1);
kill_fasync(&list->fasync, SIGIO, POLL_IN);
kill_fasync(&client->fasync, SIGIO, POLL_IN);
}
wake_up_interruptible(&evdev->wait);
......@@ -76,22 +76,23 @@ static void evdev_event(struct input_handle *handle, unsigned int type, unsigned
static int evdev_fasync(int fd, struct file *file, int on)
{
struct evdev_client *client = file->private_data;
int retval;
struct evdev_list *list = file->private_data;
retval = fasync_helper(fd, file, on, &list->fasync);
retval = fasync_helper(fd, file, on, &client->fasync);
return retval < 0 ? retval : 0;
}
static int evdev_flush(struct file *file, fl_owner_t id)
{
struct evdev_list *list = file->private_data;
struct evdev_client *client = file->private_data;
struct evdev *evdev = client->evdev;
if (!list->evdev->exist)
if (!evdev->exist)
return -ENODEV;
return input_flush_device(&list->evdev->handle, file);
return input_flush_device(&evdev->handle, file);
}
static void evdev_free(struct evdev *evdev)
......@@ -100,48 +101,55 @@ static void evdev_free(struct evdev *evdev)
kfree(evdev);
}
static int evdev_release(struct inode * inode, struct file * file)
static int evdev_release(struct inode *inode, struct file *file)
{
struct evdev_list *list = file->private_data;
struct evdev_client *client = file->private_data;
struct evdev *evdev = client->evdev;
if (list->evdev->grab == list) {
input_release_device(&list->evdev->handle);
list->evdev->grab = NULL;
if (evdev->grab == client) {
input_release_device(&evdev->handle);
evdev->grab = NULL;
}
evdev_fasync(-1, file, 0);
list_del(&list->node);
list_del(&client->node);
kfree(client);
if (!--list->evdev->open) {
if (list->evdev->exist)
input_close_device(&list->evdev->handle);
if (!--evdev->open) {
if (evdev->exist)
input_close_device(&evdev->handle);
else
evdev_free(list->evdev);
evdev_free(evdev);
}
kfree(list);
return 0;
}
static int evdev_open(struct inode * inode, struct file * file)
static int evdev_open(struct inode *inode, struct file *file)
{
struct evdev_list *list;
struct evdev_client *client;
struct evdev *evdev;
int i = iminor(inode) - EVDEV_MINOR_BASE;
if (i >= EVDEV_MINORS || !evdev_table[i] || !evdev_table[i]->exist)
if (i >= EVDEV_MINORS)
return -ENODEV;
evdev = evdev_table[i];
if (!evdev || !evdev->exist)
return -ENODEV;
if (!(list = kzalloc(sizeof(struct evdev_list), GFP_KERNEL)))
client = kzalloc(sizeof(struct evdev_client), GFP_KERNEL);
if (!client)
return -ENOMEM;
list->evdev = evdev_table[i];
list_add_tail(&list->node, &evdev_table[i]->list);
file->private_data = list;
client->evdev = evdev;
list_add_tail(&client->node, &evdev->client_list);
if (!list->evdev->open++)
if (list->evdev->exist)
input_open_device(&list->evdev->handle);
if (!evdev->open++ && evdev->exist)
input_open_device(&evdev->handle);
file->private_data = client;
return 0;
}
......@@ -243,54 +251,55 @@ static int evdev_event_to_user(char __user *buffer, const struct input_event *ev
#endif /* CONFIG_COMPAT */
static ssize_t evdev_write(struct file * file, const char __user * buffer, size_t count, loff_t *ppos)
static ssize_t evdev_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
{
struct evdev_list *list = file->private_data;
struct evdev_client *client = file->private_data;
struct evdev *evdev = client->evdev;
struct input_event event;
int retval = 0;
if (!list->evdev->exist)
if (!evdev->exist)
return -ENODEV;
while (retval < count) {
if (evdev_event_from_user(buffer + retval, &event))
return -EFAULT;
input_inject_event(&list->evdev->handle, event.type, event.code, event.value);
input_inject_event(&evdev->handle, event.type, event.code, event.value);
retval += evdev_event_size();
}
return retval;
}
static ssize_t evdev_read(struct file * file, char __user * buffer, size_t count, loff_t *ppos)
static ssize_t evdev_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
{
struct evdev_list *list = file->private_data;
struct evdev_client *client = file->private_data;
struct evdev *evdev = client->evdev;
int retval;
if (count < evdev_event_size())
return -EINVAL;
if (list->head == list->tail && list->evdev->exist && (file->f_flags & O_NONBLOCK))
if (client->head == client->tail && evdev->exist && (file->f_flags & O_NONBLOCK))
return -EAGAIN;
retval = wait_event_interruptible(list->evdev->wait,
list->head != list->tail || (!list->evdev->exist));
retval = wait_event_interruptible(evdev->wait,
client->head != client->tail || !evdev->exist);
if (retval)
return retval;
if (!list->evdev->exist)
if (!evdev->exist)
return -ENODEV;
while (list->head != list->tail && retval + evdev_event_size() <= count) {
while (client->head != client->tail && retval + evdev_event_size() <= count) {
struct input_event *event = (struct input_event *) list->buffer + list->tail;
struct input_event *event = (struct input_event *) client->buffer + client->tail;
if (evdev_event_to_user(buffer + retval, event))
return -EFAULT;
list->tail = (list->tail + 1) & (EVDEV_BUFFER_SIZE - 1);
client->tail = (client->tail + 1) & (EVDEV_BUFFER_SIZE - 1);
retval += evdev_event_size();
}
......@@ -300,11 +309,12 @@ static ssize_t evdev_read(struct file * file, char __user * buffer, size_t count
/* No kernel lock - fine */
static unsigned int evdev_poll(struct file *file, poll_table *wait)
{
struct evdev_list *list = file->private_data;
struct evdev_client *client = file->private_data;
struct evdev *evdev = client->evdev;
poll_wait(file, &list->evdev->wait, wait);
return ((list->head == list->tail) ? 0 : (POLLIN | POLLRDNORM)) |
(list->evdev->exist ? 0 : (POLLHUP | POLLERR));
poll_wait(file, &evdev->wait, wait);
return ((client->head == client->tail) ? 0 : (POLLIN | POLLRDNORM)) |
(evdev->exist ? 0 : (POLLHUP | POLLERR));
}
#ifdef CONFIG_COMPAT
......@@ -387,8 +397,8 @@ static int str_to_user(const char *str, unsigned int maxlen, void __user *p)
static long evdev_ioctl_handler(struct file *file, unsigned int cmd,
void __user *p, int compat_mode)
{
struct evdev_list *list = file->private_data;
struct evdev *evdev = list->evdev;
struct evdev_client *client = file->private_data;
struct evdev *evdev = client->evdev;
struct input_dev *dev = evdev->handle.dev;
struct input_absinfo abs;
struct ff_effect effect;
......@@ -476,10 +486,10 @@ static long evdev_ioctl_handler(struct file *file, unsigned int cmd,
return -EBUSY;
if (input_grab_device(&evdev->handle))
return -EBUSY;
evdev->grab = list;
evdev->grab = client;
return 0;
} else {
if (evdev->grab != list)
if (evdev->grab != client)
return -EINVAL;
input_release_device(&evdev->handle);
evdev->grab = NULL;
......@@ -624,7 +634,7 @@ static int evdev_connect(struct input_handler *handler, struct input_dev *dev,
if (!evdev)
return -ENOMEM;
INIT_LIST_HEAD(&evdev->list);
INIT_LIST_HEAD(&evdev->client_list);
init_waitqueue_head(&evdev->wait);
evdev->exist = 1;
......@@ -671,7 +681,7 @@ static int evdev_connect(struct input_handler *handler, struct input_dev *dev,
static void evdev_disconnect(struct input_handle *handle)
{
struct evdev *evdev = handle->private;
struct evdev_list *list;
struct evdev_client *client;
input_unregister_handle(handle);
......@@ -684,8 +694,8 @@ static void evdev_disconnect(struct input_handle *handle)
input_flush_device(handle, NULL);
input_close_device(handle);
wake_up_interruptible(&evdev->wait);
list_for_each_entry(list, &evdev->list, node)
kill_fasync(&list->fasync, SIGIO, POLL_HUP);
list_for_each_entry(client, &evdev->client_list, node)
kill_fasync(&client->fasync, SIGIO, POLL_HUP);
} else
evdev_free(evdev);
}
......
drivers/input/joydev.c
浏览文件 @ d0ffb9be
......@@ -43,7 +43,7 @@ struct joydev {
char name[16];
struct input_handle handle;
wait_queue_head_t wait;
struct list_head list;
struct list_head client_list;
struct js_corr corr[ABS_MAX + 1];
struct JS_DATA_SAVE_TYPE glue;
int nabs;
......@@ -55,7 +55,7 @@ struct joydev {
__s16 abs[ABS_MAX + 1];
};
struct joydev_list {
struct joydev_client {
struct js_event buffer[JOYDEV_BUFFER_SIZE];
int head;
int tail;
......@@ -87,7 +87,7 @@ static int joydev_correct(int value, struct js_corr *corr)
static void joydev_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
{
struct joydev *joydev = handle->private;
struct joydev_list *list;
struct joydev_client *client;
struct js_event event;
switch (type) {
......@@ -115,15 +115,15 @@ static void joydev_event(struct input_handle *handle, unsigned int type, unsigne
event.time = jiffies_to_msecs(jiffies);
list_for_each_entry(list, &joydev->list, node) {
list_for_each_entry(client, &joydev->client_list, node) {
memcpy(list->buffer + list->head, &event, sizeof(struct js_event));
memcpy(client->buffer + client->head, &event, sizeof(struct js_event));
if (list->startup == joydev->nabs + joydev->nkey)
if (list->tail == (list->head = (list->head + 1) & (JOYDEV_BUFFER_SIZE - 1)))
list->startup = 0;
if (client->startup == joydev->nabs + joydev->nkey)
if (client->tail == (client->head = (client->head + 1) & (JOYDEV_BUFFER_SIZE - 1)))
client->startup = 0;
kill_fasync(&list->fasync, SIGIO, POLL_IN);
kill_fasync(&client->fasync, SIGIO, POLL_IN);
}
wake_up_interruptible(&joydev->wait);
......@@ -132,9 +132,9 @@ static void joydev_event(struct input_handle *handle, unsigned int type, unsigne
static int joydev_fasync(int fd, struct file *file, int on)
{
int retval;
struct joydev_list *list = file->private_data;
struct joydev_client *client = file->private_data;
retval = fasync_helper(fd, file, on, &list->fasync);
retval = fasync_helper(fd, file, on, &client->fasync);
return retval < 0 ? retval : 0;
}
......@@ -145,60 +145,66 @@ static void joydev_free(struct joydev *joydev)
kfree(joydev);
}
static int joydev_release(struct inode * inode, struct file * file)
static int joydev_release(struct inode *inode, struct file *file)
{
struct joydev_list *list = file->private_data;
struct joydev_client *client = file->private_data;
struct joydev *joydev = client->joydev;
joydev_fasync(-1, file, 0);
list_del(&list->node);
list_del(&client->node);
kfree(client);
if (!--list->joydev->open) {
if (list->joydev->exist)
input_close_device(&list->joydev->handle);
if (!--joydev->open) {
if (joydev->exist)
input_close_device(&joydev->handle);
else
joydev_free(list->joydev);
joydev_free(joydev);
}
kfree(list);
return 0;
}
static int joydev_open(struct inode *inode, struct file *file)
{
struct joydev_list *list;
struct joydev_client *client;
struct joydev *joydev;
int i = iminor(inode) - JOYDEV_MINOR_BASE;
if (i >= JOYDEV_MINORS || !joydev_table[i])
if (i >= JOYDEV_MINORS)
return -ENODEV;
joydev = joydev_table[i];
if (!joydev || !joydev->exist)
return -ENODEV;
if (!(list = kzalloc(sizeof(struct joydev_list), GFP_KERNEL)))
client = kzalloc(sizeof(struct joydev_client), GFP_KERNEL);
if (!client)
return -ENOMEM;
list->joydev = joydev_table[i];
list_add_tail(&list->node, &joydev_table[i]->list);
file->private_data = list;
client->joydev = joydev;
list_add_tail(&client->node, &joydev->client_list);
if (!list->joydev->open++)
if (list->joydev->exist)
input_open_device(&list->joydev->handle);
if (!joydev->open++ && joydev->exist)
input_open_device(&joydev->handle);
file->private_data = client;
return 0;
}
static ssize_t joydev_write(struct file * file, const char __user * buffer, size_t count, loff_t *ppos)
static ssize_t joydev_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
{
return -EINVAL;
}
static ssize_t joydev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
struct joydev_list *list = file->private_data;
struct joydev *joydev = list->joydev;
struct joydev_client *client = file->private_data;
struct joydev *joydev = client->joydev;
struct input_dev *input = joydev->handle.dev;
int retval = 0;
if (!list->joydev->exist)
if (!joydev->exist)
return -ENODEV;
if (count < sizeof(struct js_event))
......@@ -217,56 +223,55 @@ static ssize_t joydev_read(struct file *file, char __user *buf, size_t count, lo
if (copy_to_user(buf, &data, sizeof(struct JS_DATA_TYPE)))
return -EFAULT;
list->startup = 0;
list->tail = list->head;
client->startup = 0;
client->tail = client->head;
return sizeof(struct JS_DATA_TYPE);
}
if (list->startup == joydev->nabs + joydev->nkey &&
list->head == list->tail && (file->f_flags & O_NONBLOCK))
if (client->startup == joydev->nabs + joydev->nkey &&
client->head == client->tail && (file->f_flags & O_NONBLOCK))
return -EAGAIN;
retval = wait_event_interruptible(list->joydev->wait,
!list->joydev->exist ||
list->startup < joydev->nabs + joydev->nkey ||
list->head != list->tail);
retval = wait_event_interruptible(joydev->wait,
!joydev->exist ||
client->startup < joydev->nabs + joydev->nkey ||
client->head != client->tail);
if (retval)
return retval;
if (!list->joydev->exist)
if (!joydev->exist)
return -ENODEV;
while (list->startup < joydev->nabs + joydev->nkey && retval + sizeof(struct js_event) <= count) {
while (client->startup < joydev->nabs + joydev->nkey && retval + sizeof(struct js_event) <= count) {
struct js_event event;
event.time = jiffies_to_msecs(jiffies);
if (list->startup < joydev->nkey) {
if (client->startup < joydev->nkey) {
event.type = JS_EVENT_BUTTON | JS_EVENT_INIT;
event.number = list->startup;
event.number = client->startup;
event.value = !!test_bit(joydev->keypam[event.number], input->key);
} else {
event.type = JS_EVENT_AXIS | JS_EVENT_INIT;
event.number = list->startup - joydev->nkey;
event.number = client->startup - joydev->nkey;
event.value = joydev->abs[event.number];
}
if (copy_to_user(buf + retval, &event, sizeof(struct js_event)))
return -EFAULT;
list->startup++;
client->startup++;
retval += sizeof(struct js_event);
}
while (list->head != list->tail && retval + sizeof(struct js_event) <= count) {
while (client->head != client->tail && retval + sizeof(struct js_event) <= count) {
if (copy_to_user(buf + retval, list->buffer + list->tail, sizeof(struct js_event)))
if (copy_to_user(buf + retval, client->buffer + client->tail, sizeof(struct js_event)))
return -EFAULT;
list->tail = (list->tail + 1) & (JOYDEV_BUFFER_SIZE - 1);
client->tail = (client->tail + 1) & (JOYDEV_BUFFER_SIZE - 1);
retval += sizeof(struct js_event);
}
......@@ -276,11 +281,12 @@ static ssize_t joydev_read(struct file *file, char __user *buf, size_t count, lo
/* No kernel lock - fine */
static unsigned int joydev_poll(struct file *file, poll_table *wait)
{
struct joydev_list *list = file->private_data;
struct joydev_client *client = file->private_data;
struct joydev *joydev = client->joydev;
poll_wait(file, &list->joydev->wait, wait);
return ((list->head != list->tail || list->startup < list->joydev->nabs + list->joydev->nkey) ?
(POLLIN | POLLRDNORM) : 0) | (list->joydev->exist ? 0 : (POLLHUP | POLLERR));
poll_wait(file, &joydev->wait, wait);
return ((client->head != client->tail || client->startup < joydev->nabs + joydev->nkey) ?
(POLLIN | POLLRDNORM) : 0) | (joydev->exist ? 0 : (POLLHUP | POLLERR));
}
static int joydev_ioctl_common(struct joydev *joydev, unsigned int cmd, void __user *argp)
......@@ -374,8 +380,8 @@ static int joydev_ioctl_common(struct joydev *joydev, unsigned int cmd, void __u
#ifdef CONFIG_COMPAT
static long joydev_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
struct joydev_list *list = file->private_data;
struct joydev *joydev = list->joydev;
struct joydev_client *client = file->private_data;
struct joydev *joydev = client->joydev;
void __user *argp = (void __user *)arg;
s32 tmp32;
struct JS_DATA_SAVE_TYPE_32 ds32;
......@@ -428,8 +434,8 @@ static long joydev_compat_ioctl(struct file *file, unsigned int cmd, unsigned lo
static int joydev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
{
struct joydev_list *list = file->private_data;
struct joydev *joydev = list->joydev;
struct joydev_client *client = file->private_data;
struct joydev *joydev = client->joydev;
void __user *argp = (void __user *)arg;
if (!joydev->exist)
......@@ -484,7 +490,7 @@ static int joydev_connect(struct input_handler *handler, struct input_dev *dev,
if (!joydev)
return -ENOMEM;
INIT_LIST_HEAD(&joydev->list);
INIT_LIST_HEAD(&joydev->client_list);
init_waitqueue_head(&joydev->wait);
joydev->minor = minor;
......@@ -572,7 +578,7 @@ static int joydev_connect(struct input_handler *handler, struct input_dev *dev,
static void joydev_disconnect(struct input_handle *handle)
{
struct joydev *joydev = handle->private;
struct joydev_list *list;
struct joydev_client *client;
input_unregister_handle(handle);
......@@ -583,8 +589,8 @@ static void joydev_disconnect(struct input_handle *handle)
if (joydev->open) {
input_close_device(handle);
wake_up_interruptible(&joydev->wait);
list_for_each_entry(list, &joydev->list, node)
kill_fasync(&list->fasync, SIGIO, POLL_HUP);
list_for_each_entry(client, &joydev->client_list, node)
kill_fasync(&client->fasync, SIGIO, POLL_HUP);
} else
joydev_free(joydev);
}
......
drivers/input/mousedev.c
浏览文件 @ d0ffb9be
......@@ -63,7 +63,7 @@ struct mousedev {
int minor;
char name[16];
wait_queue_head_t wait;
struct list_head list;
struct list_head client_list;
struct input_handle handle;
struct mousedev_hw_data packet;
......@@ -85,7 +85,7 @@ struct mousedev_motion {
};
#define PACKET_QUEUE_LEN 16
struct mousedev_list {
struct mousedev_client {
struct fasync_struct *fasync;
struct mousedev *mousedev;
struct list_head node;
......@@ -223,47 +223,47 @@ static void mousedev_key_event(struct mousedev *mousedev, unsigned int code, int
static void mousedev_notify_readers(struct mousedev *mousedev, struct mousedev_hw_data *packet)
{
struct mousedev_list *list;
struct mousedev_client *client;
struct mousedev_motion *p;
unsigned long flags;
int wake_readers = 0;
list_for_each_entry(list, &mousedev->list, node) {
spin_lock_irqsave(&list->packet_lock, flags);
list_for_each_entry(client, &mousedev->client_list, node) {
spin_lock_irqsave(&client->packet_lock, flags);
p = &list->packets[list->head];
if (list->ready && p->buttons != mousedev->packet.buttons) {
unsigned int new_head = (list->head + 1) % PACKET_QUEUE_LEN;
if (new_head != list->tail) {
p = &list->packets[list->head = new_head];
p = &client->packets[client->head];
if (client->ready && p->buttons != mousedev->packet.buttons) {
unsigned int new_head = (client->head + 1) % PACKET_QUEUE_LEN;
if (new_head != client->tail) {
p = &client->packets[client->head = new_head];
memset(p, 0, sizeof(struct mousedev_motion));
}
}
if (packet->abs_event) {
p->dx += packet->x - list->pos_x;
p->dy += packet->y - list->pos_y;
list->pos_x = packet->x;
list->pos_y = packet->y;
p->dx += packet->x - client->pos_x;
p->dy += packet->y - client->pos_y;
client->pos_x = packet->x;
client->pos_y = packet->y;
}
list->pos_x += packet->dx;
list->pos_x = list->pos_x < 0 ? 0 : (list->pos_x >= xres ? xres : list->pos_x);
list->pos_y += packet->dy;
list->pos_y = list->pos_y < 0 ? 0 : (list->pos_y >= yres ? yres : list->pos_y);
client->pos_x += packet->dx;
client->pos_x = client->pos_x < 0 ? 0 : (client->pos_x >= xres ? xres : client->pos_x);
client->pos_y += packet->dy;
client->pos_y = client->pos_y < 0 ? 0 : (client->pos_y >= yres ? yres : client->pos_y);
p->dx += packet->dx;
p->dy += packet->dy;
p->dz += packet->dz;
p->buttons = mousedev->packet.buttons;
if (p->dx || p->dy || p->dz || p->buttons != list->last_buttons)
list->ready = 1;
if (p->dx || p->dy || p->dz || p->buttons != client->last_buttons)
client->ready = 1;
spin_unlock_irqrestore(&list->packet_lock, flags);
spin_unlock_irqrestore(&client->packet_lock, flags);
if (list->ready) {
kill_fasync(&list->fasync, SIGIO, POLL_IN);
if (client->ready) {
kill_fasync(&client->fasync, SIGIO, POLL_IN);
wake_readers = 1;
}
}
......@@ -351,9 +351,9 @@ static void mousedev_event(struct input_handle *handle, unsigned int type, unsig
static int mousedev_fasync(int fd, struct file *file, int on)
{
int retval;
struct mousedev_list *list = file->private_data;
struct mousedev_client *client = file->private_data;
retval = fasync_helper(fd, file, on, &list->fasync);
retval = fasync_helper(fd, file, on, &client->fasync);
return retval < 0 ? retval : 0;
}
......@@ -380,32 +380,33 @@ static void mixdev_release(void)
}
}
static int mousedev_release(struct inode * inode, struct file * file)
static int mousedev_release(struct inode *inode, struct file *file)
{
struct mousedev_list *list = file->private_data;
struct mousedev_client *client = file->private_data;
struct mousedev *mousedev = client->mousedev;
mousedev_fasync(-1, file, 0);
list_del(&list->node);
list_del(&client->node);
kfree(client);
if (!--list->mousedev->open) {
if (list->mousedev->minor == MOUSEDEV_MIX)
if (!--mousedev->open) {
if (mousedev->minor == MOUSEDEV_MIX)
mixdev_release();
else if (!mousedev_mix.open) {
if (list->mousedev->exist)
input_close_device(&list->mousedev->handle);
if (mousedev->exist)
input_close_device(&mousedev->handle);
else
mousedev_free(list->mousedev);
mousedev_free(mousedev);
}
}
kfree(list);
return 0;
}
static int mousedev_open(struct inode * inode, struct file * file)
static int mousedev_open(struct inode *inode, struct file *file)
{
struct mousedev_list *list;
struct mousedev_client *client;
struct input_handle *handle;
struct mousedev *mousedev;
int i;
......@@ -417,31 +418,36 @@ static int mousedev_open(struct inode * inode, struct file * file)
#endif
i = iminor(inode) - MOUSEDEV_MINOR_BASE;
if (i >= MOUSEDEV_MINORS || !mousedev_table[i])
if (i >= MOUSEDEV_MINORS)
return -ENODEV;
mousedev = mousedev_table[i];
if (!mousedev)
return -ENODEV;
if (!(list = kzalloc(sizeof(struct mousedev_list), GFP_KERNEL)))
client = kzalloc(sizeof(struct mousedev_client), GFP_KERNEL);
if (!client)
return -ENOMEM;
spin_lock_init(&list->packet_lock);
list->pos_x = xres / 2;
list->pos_y = yres / 2;
list->mousedev = mousedev_table[i];
list_add_tail(&list->node, &mousedev_table[i]->list);
file->private_data = list;
spin_lock_init(&client->packet_lock);
client->pos_x = xres / 2;
client->pos_y = yres / 2;
client->mousedev = mousedev;
list_add_tail(&client->node, &mousedev->client_list);
if (!list->mousedev->open++) {
if (list->mousedev->minor == MOUSEDEV_MIX) {
if (!mousedev->open++) {
if (mousedev->minor == MOUSEDEV_MIX) {
list_for_each_entry(handle, &mousedev_handler.h_list, h_node) {
mousedev = handle->private;
if (!mousedev->open && mousedev->exist)
struct mousedev *md = handle->private;
if (!md->open && md->exist)
input_open_device(handle);
}
} else
if (!mousedev_mix.open && list->mousedev->exist)
input_open_device(&list->mousedev->handle);
if (!mousedev_mix.open && mousedev->exist)
input_open_device(&mousedev->handle);
}
file->private_data = client;
return 0;
}
......@@ -450,13 +456,13 @@ static inline int mousedev_limit_delta(int delta, int limit)
return delta > limit ? limit : (delta < -limit ? -limit : delta);
}
static void mousedev_packet(struct mousedev_list *list, signed char *ps2_data)
static void mousedev_packet(struct mousedev_client *client, signed char *ps2_data)
{
struct mousedev_motion *p;
unsigned long flags;
spin_lock_irqsave(&list->packet_lock, flags);
p = &list->packets[list->tail];
spin_lock_irqsave(&client->packet_lock, flags);
p = &client->packets[client->tail];
ps2_data[0] = 0x08 | ((p->dx < 0) << 4) | ((p->dy < 0) << 5) | (p->buttons & 0x07);
ps2_data[1] = mousedev_limit_delta(p->dx, 127);
......@@ -464,44 +470,44 @@ static void mousedev_packet(struct mousedev_list *list, signed char *ps2_data)
p->dx -= ps2_data[1];
p->dy -= ps2_data[2];
switch (list->mode) {
switch (client->mode) {
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);
list->bufsiz = 4;
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];
list->bufsiz = 4;
client->bufsiz = 4;
break;
case MOUSEDEV_EMUL_PS2:
default:
ps2_data[0] |= ((p->buttons & 0x10) >> 3) | ((p->buttons & 0x08) >> 1);
p->dz = 0;
list->bufsiz = 3;
client->bufsiz = 3;
break;
}
if (!p->dx && !p->dy && !p->dz) {
if (list->tail == list->head) {
list->ready = 0;
list->last_buttons = p->buttons;
if (client->tail == client->head) {
client->ready = 0;
client->last_buttons = p->buttons;
} else
list->tail = (list->tail + 1) % PACKET_QUEUE_LEN;
client->tail = (client->tail + 1) % PACKET_QUEUE_LEN;
}
spin_unlock_irqrestore(&list->packet_lock, flags);
spin_unlock_irqrestore(&client->packet_lock, flags);
}
static ssize_t mousedev_write(struct file * file, const char __user * buffer, size_t count, loff_t *ppos)
static ssize_t mousedev_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
{
struct mousedev_list *list = file->private_data;
struct mousedev_client *client = file->private_data;
unsigned char c;
unsigned int i;
......@@ -510,95 +516,95 @@ static ssize_t mousedev_write(struct file * file, const char __user * buffer, si
if (get_user(c, buffer + i))
return -EFAULT;
if (c == mousedev_imex_seq[list->imexseq]) {
if (++list->imexseq == MOUSEDEV_SEQ_LEN) {
list->imexseq = 0;
list->mode = MOUSEDEV_EMUL_EXPS;
if (c == mousedev_imex_seq[client->imexseq]) {
if (++client->imexseq == MOUSEDEV_SEQ_LEN) {
client->imexseq = 0;
client->mode = MOUSEDEV_EMUL_EXPS;
}
} else
list->imexseq = 0;
client->imexseq = 0;
if (c == mousedev_imps_seq[list->impsseq]) {
if (++list->impsseq == MOUSEDEV_SEQ_LEN) {
list->impsseq = 0;
list->mode = MOUSEDEV_EMUL_IMPS;
if (c == mousedev_imps_seq[client->impsseq]) {
if (++client->impsseq == MOUSEDEV_SEQ_LEN) {
client->impsseq = 0;
client->mode = MOUSEDEV_EMUL_IMPS;
}
} else
list->impsseq = 0;
client->impsseq = 0;
list->ps2[0] = 0xfa;
client->ps2[0] = 0xfa;
switch (c) {
case 0xeb: /* Poll */
mousedev_packet(list, &list->ps2[1]);
list->bufsiz++; /* account for leading ACK */
mousedev_packet(client, &client->ps2[1]);
client->bufsiz++; /* account for leading ACK */
break;
case 0xf2: /* Get ID */
switch (list->mode) {
case MOUSEDEV_EMUL_PS2: list->ps2[1] = 0; break;
case MOUSEDEV_EMUL_IMPS: list->ps2[1] = 3; break;
case MOUSEDEV_EMUL_EXPS: list->ps2[1] = 4; break;
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;
}
list->bufsiz = 2;
client->bufsiz = 2;
break;
case 0xe9: /* Get info */
list->ps2[1] = 0x60; list->ps2[2] = 3; list->ps2[3] = 200;
list->bufsiz = 4;
client->ps2[1] = 0x60; client->ps2[2] = 3; client->ps2[3] = 200;
client->bufsiz = 4;
break;
case 0xff: /* Reset */
list->impsseq = list->imexseq = 0;
list->mode = MOUSEDEV_EMUL_PS2;
list->ps2[1] = 0xaa; list->ps2[2] = 0x00;
list->bufsiz = 3;
client->impsseq = client->imexseq = 0;
client->mode = MOUSEDEV_EMUL_PS2;
client->ps2[1] = 0xaa; client->ps2[2] = 0x00;
client->bufsiz = 3;
break;
default:
list->bufsiz = 1;
client->bufsiz = 1;
break;
}
list->buffer = list->bufsiz;
client->buffer = client->bufsiz;
}
kill_fasync(&list->fasync, SIGIO, POLL_IN);
kill_fasync(&client->fasync, SIGIO, POLL_IN);
wake_up_interruptible(&list->mousedev->wait);
wake_up_interruptible(&client->mousedev->wait);
return count;
}
static ssize_t mousedev_read(struct file * file, char __user * buffer, size_t count, loff_t *ppos)
static ssize_t mousedev_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
{
struct mousedev_list *list = file->private_data;
struct mousedev_client *client = file->private_data;
int retval = 0;
if (!list->ready && !list->buffer && (file->f_flags & O_NONBLOCK))
if (!client->ready && !client->buffer && (file->f_flags & O_NONBLOCK))
return -EAGAIN;
retval = wait_event_interruptible(list->mousedev->wait,
!list->mousedev->exist || list->ready || list->buffer);
retval = wait_event_interruptible(client->mousedev->wait,
!client->mousedev->exist || client->ready || client->buffer);
if (retval)
return retval;
if (!list->mousedev->exist)
if (!client->mousedev->exist)
return -ENODEV;
if (!list->buffer && list->ready) {
mousedev_packet(list, list->ps2);
list->buffer = list->bufsiz;
if (!client->buffer && client->ready) {
mousedev_packet(client, client->ps2);
client->buffer = client->bufsiz;
}
if (count > list->buffer)
count = list->buffer;
if (count > client->buffer)
count = client->buffer;
list->buffer -= count;
client->buffer -= count;
if (copy_to_user(buffer, list->ps2 + list->bufsiz - list->buffer - count, count))
if (copy_to_user(buffer, client->ps2 + client->bufsiz - client->buffer - count, count))
return -EFAULT;
return count;
......@@ -607,11 +613,12 @@ static ssize_t mousedev_read(struct file * file, char __user * buffer, size_t co
/* No kernel lock - fine */
static unsigned int mousedev_poll(struct file *file, poll_table *wait)
{
struct mousedev_list *list = file->private_data;
struct mousedev_client *client = file->private_data;
struct mousedev *mousedev = client->mousedev;
poll_wait(file, &list->mousedev->wait, wait);
return ((list->ready || list->buffer) ? (POLLIN | POLLRDNORM) : 0) |
(list->mousedev->exist ? 0 : (POLLHUP | POLLERR));
poll_wait(file, &mousedev->wait, wait);
return ((client->ready || client->buffer) ? (POLLIN | POLLRDNORM) : 0) |
(mousedev->exist ? 0 : (POLLHUP | POLLERR));
}
static const struct file_operations mousedev_fops = {
......@@ -643,7 +650,7 @@ static int mousedev_connect(struct input_handler *handler, struct input_dev *dev
if (!mousedev)
return -ENOMEM;
INIT_LIST_HEAD(&mousedev->list);
INIT_LIST_HEAD(&mousedev->client_list);
INIT_LIST_HEAD(&mousedev->mixdev_node);
init_waitqueue_head(&mousedev->wait);
......@@ -699,7 +706,7 @@ static int mousedev_connect(struct input_handler *handler, struct input_dev *dev
static void mousedev_disconnect(struct input_handle *handle)
{
struct mousedev *mousedev = handle->private;
struct mousedev_list *list;
struct mousedev_client *client;
input_unregister_handle(handle);
......@@ -711,8 +718,8 @@ static void mousedev_disconnect(struct input_handle *handle)
if (mousedev->open) {
input_close_device(handle);
wake_up_interruptible(&mousedev->wait);
list_for_each_entry(list, &mousedev->list, node)
kill_fasync(&list->fasync, SIGIO, POLL_HUP);
list_for_each_entry(client, &mousedev->client_list, node)
kill_fasync(&client->fasync, SIGIO, POLL_HUP);
} else {
if (mousedev_mix.open)
input_close_device(handle);
......@@ -745,7 +752,7 @@ static const struct input_device_id mousedev_ids[] = {
.absbit = { BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE) | BIT(ABS_TOOL_WIDTH) },
}, /* A touchpad */
{ }, /* Terminating entry */
{ }, /* Terminating entry */
};
MODULE_DEVICE_TABLE(input, mousedev_ids);
......@@ -777,7 +784,7 @@ static int __init mousedev_init(void)
return error;
memset(&mousedev_mix, 0, sizeof(struct mousedev));
INIT_LIST_HEAD(&mousedev_mix.list);
INIT_LIST_HEAD(&mousedev_mix.client_list);
init_waitqueue_head(&mousedev_mix.wait);
mousedev_table[MOUSEDEV_MIX] = &mousedev_mix;
mousedev_mix.exist = 1;
......
drivers/input/tsdev.c
浏览文件 @ d0ffb9be
......@@ -111,13 +111,13 @@ struct tsdev {
int minor;
char name[8];
wait_queue_head_t wait;
struct list_head list;
struct list_head client_list;
struct input_handle handle;
int x, y, pressure;
struct ts_calibration cal;
};
struct tsdev_list {
struct tsdev_client {
struct fasync_struct *fasync;
struct list_head node;
struct tsdev *tsdev;
......@@ -139,17 +139,18 @@ static struct tsdev *tsdev_table[TSDEV_MINORS/2];
static int tsdev_fasync(int fd, struct file *file, int on)
{
struct tsdev_list *list = file->private_data;
struct tsdev_client *client = file->private_data;
int retval;
retval = fasync_helper(fd, file, on, &list->fasync);
retval = fasync_helper(fd, file, on, &client->fasync);
return retval < 0 ? retval : 0;
}
static int tsdev_open(struct inode *inode, struct file *file)
{
int i = iminor(inode) - TSDEV_MINOR_BASE;
struct tsdev_list *list;
struct tsdev_client *client;
struct tsdev *tsdev;
printk(KERN_WARNING "tsdev (compaq touchscreen emulation) is scheduled "
"for removal.\nSee Documentation/feature-removal-schedule.txt "
......@@ -158,19 +159,22 @@ static int tsdev_open(struct inode *inode, struct file *file)
if (i >= TSDEV_MINORS)
return -ENODEV;
if (!(list = kzalloc(sizeof(struct tsdev_list), GFP_KERNEL)))
tsdev = tsdev_table[i & TSDEV_MINOR_MASK];
if (!tsdev || !tsdev->exist)
return -ENODEV;
client = kzalloc(sizeof(struct tsdev_client), GFP_KERNEL);
if (!client)
return -ENOMEM;
list->raw = (i >= TSDEV_MINORS/2) ? 1 : 0;
client->tsdev = tsdev;
client->raw = (i >= TSDEV_MINORS / 2) ? 1 : 0;
list_add_tail(&client->node, &tsdev->client_list);
i &= TSDEV_MINOR_MASK;
list->tsdev = tsdev_table[i];
list_add_tail(&list->node, &tsdev_table[i]->list);
file->private_data = list;
if (!tsdev->open++ && tsdev->exist)
input_open_device(&tsdev->handle);
if (!list->tsdev->open++)
if (list->tsdev->exist)
input_open_device(&list->tsdev->handle);
file->private_data = client;
return 0;
}
......@@ -182,45 +186,48 @@ static void tsdev_free(struct tsdev *tsdev)
static int tsdev_release(struct inode *inode, struct file *file)
{
struct tsdev_list *list = file->private_data;
struct tsdev_client *client = file->private_data;
struct tsdev *tsdev = client->tsdev;
tsdev_fasync(-1, file, 0);
list_del(&list->node);
if (!--list->tsdev->open) {
if (list->tsdev->exist)
input_close_device(&list->tsdev->handle);
list_del(&client->node);
kfree(client);
if (!--tsdev->open) {
if (tsdev->exist)
input_close_device(&tsdev->handle);
else
tsdev_free(list->tsdev);
tsdev_free(tsdev);
}
kfree(list);
return 0;
}
static ssize_t tsdev_read(struct file *file, char __user *buffer, size_t count,
loff_t * ppos)
loff_t *ppos)
{
struct tsdev_list *list = file->private_data;
struct tsdev_client *client = file->private_data;
struct tsdev *tsdev = client->tsdev;
int retval = 0;
if (list->head == list->tail && list->tsdev->exist && (file->f_flags & O_NONBLOCK))
if (client->head == client->tail && tsdev->exist && (file->f_flags & O_NONBLOCK))
return -EAGAIN;
retval = wait_event_interruptible(list->tsdev->wait,
list->head != list->tail || !list->tsdev->exist);
retval = wait_event_interruptible(tsdev->wait,
client->head != client->tail || !tsdev->exist);
if (retval)
return retval;
if (!list->tsdev->exist)
if (!tsdev->exist)
return -ENODEV;
while (list->head != list->tail &&
while (client->head != client->tail &&
retval + sizeof (struct ts_event) <= count) {
if (copy_to_user (buffer + retval, list->event + list->tail,
if (copy_to_user (buffer + retval, client->event + client->tail,
sizeof (struct ts_event)))
return -EFAULT;
list->tail = (list->tail + 1) & (TSDEV_BUFFER_SIZE - 1);
client->tail = (client->tail + 1) & (TSDEV_BUFFER_SIZE - 1);
retval += sizeof (struct ts_event);
}
......@@ -228,20 +235,21 @@ static ssize_t tsdev_read(struct file *file, char __user *buffer, size_t count,
}
/* No kernel lock - fine */
static unsigned int tsdev_poll(struct file *file, poll_table * wait)
static unsigned int tsdev_poll(struct file *file, poll_table *wait)
{
struct tsdev_list *list = file->private_data;
struct tsdev_client *client = file->private_data;
struct tsdev *tsdev = client->tsdev;
poll_wait(file, &list->tsdev->wait, wait);
return ((list->head == list->tail) ? 0 : (POLLIN | POLLRDNORM)) |
(list->tsdev->exist ? 0 : (POLLHUP | POLLERR));
poll_wait(file, &tsdev->wait, wait);
return ((client->head == client->tail) ? 0 : (POLLIN | POLLRDNORM)) |
(tsdev->exist ? 0 : (POLLHUP | POLLERR));
}
static int tsdev_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct tsdev_list *list = file->private_data;
struct tsdev *tsdev = list->tsdev;
struct tsdev_client *client = file->private_data;
struct tsdev *tsdev = client->tsdev;
int retval = 0;
switch (cmd) {
......@@ -279,7 +287,7 @@ static void tsdev_event(struct input_handle *handle, unsigned int type,
unsigned int code, int value)
{
struct tsdev *tsdev = handle->private;
struct tsdev_list *list;
struct tsdev_client *client;
struct timeval time;
switch (type) {
......@@ -343,18 +351,18 @@ static void tsdev_event(struct input_handle *handle, unsigned int type,
if (type != EV_SYN || code != SYN_REPORT)
return;
list_for_each_entry(list, &tsdev->list, node) {
list_for_each_entry(client, &tsdev->client_list, node) {
int x, y, tmp;
do_gettimeofday(&time);
list->event[list->head].millisecs = time.tv_usec / 100;
list->event[list->head].pressure = tsdev->pressure;
client->event[client->head].millisecs = time.tv_usec / 100;
client->event[client->head].pressure = tsdev->pressure;
x = tsdev->x;
y = tsdev->y;
/* Calibration */
if (!list->raw) {
if (!client->raw) {
x = ((x * tsdev->cal.xscale) >> 8) + tsdev->cal.xtrans;
y = ((y * tsdev->cal.yscale) >> 8) + tsdev->cal.ytrans;
if (tsdev->cal.xyswap) {
......@@ -362,10 +370,10 @@ static void tsdev_event(struct input_handle *handle, unsigned int type,
}
}
list->event[list->head].x = x;
list->event[list->head].y = y;
list->head = (list->head + 1) & (TSDEV_BUFFER_SIZE - 1);
kill_fasync(&list->fasync, SIGIO, POLL_IN);
client->event[client->head].x = x;
client->event[client->head].y = y;
client->head = (client->head + 1) & (TSDEV_BUFFER_SIZE - 1);
kill_fasync(&client->fasync, SIGIO, POLL_IN);
}
wake_up_interruptible(&tsdev->wait);
}
......@@ -390,7 +398,7 @@ static int tsdev_connect(struct input_handler *handler, struct input_dev *dev,
if (!tsdev)
return -ENOMEM;
INIT_LIST_HEAD(&tsdev->list);
INIT_LIST_HEAD(&tsdev->client_list);
init_waitqueue_head(&tsdev->wait);
sprintf(tsdev->name, "ts%d", minor);
......@@ -451,7 +459,7 @@ static int tsdev_connect(struct input_handler *handler, struct input_dev *dev,
static void tsdev_disconnect(struct input_handle *handle)
{
struct tsdev *tsdev = handle->private;
struct tsdev_list *list;
struct tsdev_client *client;
input_unregister_handle(handle);
......@@ -463,8 +471,8 @@ static void tsdev_disconnect(struct input_handle *handle)
if (tsdev->open) {
input_close_device(handle);
wake_up_interruptible(&tsdev->wait);
list_for_each_entry(list, &tsdev->list, node)
kill_fasync(&list->fasync, SIGIO, POLL_HUP);
list_for_each_entry(client, &tsdev->client_list, node)
kill_fasync(&client->fasync, SIGIO, POLL_HUP);
} else
tsdev_free(tsdev);
}
......
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