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Diffstat (limited to 'drivers/input/mousedev.c')
-rw-r--r--drivers/input/mousedev.c59
1 files changed, 36 insertions, 23 deletions
diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c
index f34b22bce4ff..83c24cca234a 100644
--- a/drivers/input/mousedev.c
+++ b/drivers/input/mousedev.c
@@ -22,6 +22,7 @@
#include <linux/random.h>
#include <linux/major.h>
#include <linux/device.h>
+#include <linux/kernel.h>
#ifdef CONFIG_INPUT_MOUSEDEV_PSAUX
#include <linux/miscdevice.h>
#endif
@@ -57,7 +58,6 @@ struct mousedev_hw_data {
};
struct mousedev {
- int exist;
int open;
int minor;
struct input_handle handle;
@@ -66,6 +66,7 @@ struct mousedev {
spinlock_t client_lock; /* protects client_list */
struct mutex mutex;
struct device dev;
+ bool exist;
struct list_head mixdev_node;
int mixdev_open;
@@ -134,11 +135,14 @@ static void mousedev_touchpad_event(struct input_dev *dev,
switch (code) {
case ABS_X:
+
fx(0) = value;
if (mousedev->touch && mousedev->pkt_count >= 2) {
- size = dev->absmax[ABS_X] - dev->absmin[ABS_X];
+ size = input_abs_get_min(dev, ABS_X) -
+ input_abs_get_max(dev, ABS_X);
if (size == 0)
size = 256 * 2;
+
tmp = ((value - fx(2)) * 256 * FRACTION_DENOM) / size;
tmp += mousedev->frac_dx;
mousedev->packet.dx = tmp / FRACTION_DENOM;
@@ -150,10 +154,12 @@ static void mousedev_touchpad_event(struct input_dev *dev,
case ABS_Y:
fy(0) = value;
if (mousedev->touch && mousedev->pkt_count >= 2) {
- /* use X size to keep the same scale */
- size = dev->absmax[ABS_X] - dev->absmin[ABS_X];
+ /* use X size for ABS_Y to keep the same scale */
+ size = input_abs_get_min(dev, ABS_X) -
+ input_abs_get_max(dev, ABS_X);
if (size == 0)
size = 256 * 2;
+
tmp = -((value - fy(2)) * 256 * FRACTION_DENOM) / size;
tmp += mousedev->frac_dy;
mousedev->packet.dy = tmp / FRACTION_DENOM;
@@ -167,33 +173,35 @@ static void mousedev_touchpad_event(struct input_dev *dev,
static void mousedev_abs_event(struct input_dev *dev, struct mousedev *mousedev,
unsigned int code, int value)
{
- int size;
+ int min, max, size;
switch (code) {
case ABS_X:
- size = dev->absmax[ABS_X] - dev->absmin[ABS_X];
+ min = input_abs_get_min(dev, ABS_X);
+ max = input_abs_get_max(dev, ABS_X);
+
+ size = max - min;
if (size == 0)
size = xres ? : 1;
- if (value > dev->absmax[ABS_X])
- value = dev->absmax[ABS_X];
- if (value < dev->absmin[ABS_X])
- value = dev->absmin[ABS_X];
- mousedev->packet.x =
- ((value - dev->absmin[ABS_X]) * xres) / size;
+
+ clamp(value, min, max);
+
+ mousedev->packet.x = ((value - min) * xres) / size;
mousedev->packet.abs_event = 1;
break;
case ABS_Y:
- size = dev->absmax[ABS_Y] - dev->absmin[ABS_Y];
+ min = input_abs_get_min(dev, ABS_Y);
+ max = input_abs_get_max(dev, ABS_Y);
+
+ size = max - min;
if (size == 0)
size = yres ? : 1;
- if (value > dev->absmax[ABS_Y])
- value = dev->absmax[ABS_Y];
- if (value < dev->absmin[ABS_Y])
- value = dev->absmin[ABS_Y];
- mousedev->packet.y = yres -
- ((value - dev->absmin[ABS_Y]) * yres) / size;
+
+ clamp(value, min, max);
+
+ mousedev->packet.y = yres - ((value - min) * yres) / size;
mousedev->packet.abs_event = 1;
break;
}
@@ -765,10 +773,15 @@ static unsigned int mousedev_poll(struct file *file, poll_table *wait)
{
struct mousedev_client *client = file->private_data;
struct mousedev *mousedev = client->mousedev;
+ unsigned int mask;
poll_wait(file, &mousedev->wait, wait);
- return ((client->ready || client->buffer) ? (POLLIN | POLLRDNORM) : 0) |
- (mousedev->exist ? 0 : (POLLHUP | POLLERR));
+
+ mask = mousedev->exist ? POLLOUT | POLLWRNORM : POLLHUP | POLLERR;
+ if (client->ready || client->buffer)
+ mask |= POLLIN | POLLRDNORM;
+
+ return mask;
}
static const struct file_operations mousedev_fops = {
@@ -802,7 +815,7 @@ static void mousedev_remove_chrdev(struct mousedev *mousedev)
static void mousedev_mark_dead(struct mousedev *mousedev)
{
mutex_lock(&mousedev->mutex);
- mousedev->exist = 0;
+ mousedev->exist = false;
mutex_unlock(&mousedev->mutex);
}
@@ -862,7 +875,7 @@ static struct mousedev *mousedev_create(struct input_dev *dev,
dev_set_name(&mousedev->dev, "mouse%d", minor);
mousedev->minor = minor;
- mousedev->exist = 1;
+ mousedev->exist = true;
mousedev->handle.dev = input_get_device(dev);
mousedev->handle.name = dev_name(&mousedev->dev);
mousedev->handle.handler = handler;