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path: root/hw/dmx/input/lnx-ps2.c
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Diffstat (limited to 'hw/dmx/input/lnx-ps2.c')
-rw-r--r--hw/dmx/input/lnx-ps2.c173
1 files changed, 101 insertions, 72 deletions
diff --git a/hw/dmx/input/lnx-ps2.c b/hw/dmx/input/lnx-ps2.c
index 3a220cf01..67c73a0c5 100644
--- a/hw/dmx/input/lnx-ps2.c
+++ b/hw/dmx/input/lnx-ps2.c
@@ -101,47 +101,50 @@
/* Private area for PS/2 devices. */
typedef struct _myPrivate {
- DeviceIntPtr pMouse;
- int fd;
+ DeviceIntPtr pMouse;
+ int fd;
enum {
button1 = 0x0001,
button2 = 0x0002,
button3 = 0x0004,
button4 = 0x0008,
button5 = 0x0010
- } buttons;
+ } buttons;
} myPrivate;
-static int ps2LinuxReadBytes(int fd, unsigned char *buf, int len, int min)
+static int
+ps2LinuxReadBytes(int fd, unsigned char *buf, int len, int min)
{
- int n, tot;
- fd_set set;
- struct timeval tv;
-
+ int n, tot;
+ fd_set set;
+ struct timeval tv;
+
tot = 0;
while (len) {
n = read(fd, buf, len);
if (n > 0) {
tot += n;
- buf += n;
- len -= n;
- }
- if (tot % min == 0) break;
- FD_ZERO(&set);
- FD_SET(fd, &set);
- tv.tv_sec = 0;
- tv.tv_usec = 100 * 1000;
- n = select(fd + 1, &set, 0, 0, &tv);
- if (n <= 0) break;
+ buf += n;
+ len -= n;
+ }
+ if (tot % min == 0)
+ break;
+ FD_ZERO(&set);
+ FD_SET(fd, &set);
+ tv.tv_sec = 0;
+ tv.tv_usec = 100 * 1000;
+ n = select(fd + 1, &set, 0, 0, &tv);
+ if (n <= 0)
+ break;
}
return tot;
}
-static void ps2LinuxButton(DevicePtr pDev, ENQUEUEPROC enqueue,
- int buttons, BLOCK block)
+static void
+ps2LinuxButton(DevicePtr pDev, ENQUEUEPROC enqueue, int buttons, BLOCK block)
{
GETPRIV;
-
+
#define PRESS(b) \
do { \
enqueue(pDev, ButtonPress, 0, 0, NULL, block); \
@@ -151,21 +154,31 @@ static void ps2LinuxButton(DevicePtr pDev, ENQUEUEPROC enqueue,
do { \
enqueue(pDev, ButtonRelease, 0, 0, NULL, block); \
} while (0)
-
- if ((buttons & button1) && !(priv->buttons & button1)) PRESS(1);
- if (!(buttons & button1) && (priv->buttons & button1)) RELEASE(1);
- if ((buttons & button2) && !(priv->buttons & button2)) PRESS(2);
- if (!(buttons & button2) && (priv->buttons & button2)) RELEASE(2);
+ if ((buttons & button1) && !(priv->buttons & button1))
+ PRESS(1);
+ if (!(buttons & button1) && (priv->buttons & button1))
+ RELEASE(1);
+
+ if ((buttons & button2) && !(priv->buttons & button2))
+ PRESS(2);
+ if (!(buttons & button2) && (priv->buttons & button2))
+ RELEASE(2);
- if ((buttons & button3) && !(priv->buttons & button3)) PRESS(3);
- if (!(buttons & button3) && (priv->buttons & button3)) RELEASE(3);
+ if ((buttons & button3) && !(priv->buttons & button3))
+ PRESS(3);
+ if (!(buttons & button3) && (priv->buttons & button3))
+ RELEASE(3);
- if ((buttons & button4) && !(priv->buttons & button4)) PRESS(4);
- if (!(buttons & button4) && (priv->buttons & button4)) RELEASE(4);
-
- if ((buttons & button5) && !(priv->buttons & button5)) PRESS(5);
- if (!(buttons & button5) && (priv->buttons & button5)) RELEASE(5);
+ if ((buttons & button4) && !(priv->buttons & button4))
+ PRESS(4);
+ if (!(buttons & button4) && (priv->buttons & button4))
+ RELEASE(4);
+
+ if ((buttons & button5) && !(priv->buttons & button5))
+ PRESS(5);
+ if (!(buttons & button5) && (priv->buttons & button5))
+ RELEASE(5);
priv->buttons = buttons;
}
@@ -176,20 +189,21 @@ static void ps2LinuxButton(DevicePtr pDev, ENQUEUEPROC enqueue,
* with the \a enqueue function. The \a block type is passed to the
* functions so that they may block SIGIO handling as appropriate to the
* caller of this function. */
-void ps2LinuxRead(DevicePtr pDev, MOTIONPROC motion,
- ENQUEUEPROC enqueue, CHECKPROC checkspecial, BLOCK block)
+void
+ps2LinuxRead(DevicePtr pDev, MOTIONPROC motion,
+ ENQUEUEPROC enqueue, CHECKPROC checkspecial, BLOCK block)
{
GETPRIV;
- unsigned char buf[3 * 200]; /* RATS: Use ok */
- unsigned char *b;
- int n;
- int dx, dy, v[2];
+ unsigned char buf[3 * 200]; /* RATS: Use ok */
+ unsigned char *b;
+ int n;
+ int dx, dy, v[2];
while ((n = ps2LinuxReadBytes(priv->fd, buf, sizeof(buf), 3)) > 0) {
- b = buf;
- while (n >= 3) {
- dx = b[1] - ((b[0] & 0x10) ? 256 : 0);
- dy = -b[2] + ((b[0] & 0x20) ? 256 : 0);
+ b = buf;
+ while (n >= 3) {
+ dx = b[1] - ((b[0] & 0x10) ? 256 : 0);
+ dy = -b[2] + ((b[0] & 0x20) ? 256 : 0);
v[0] = -dx;
v[1] = -dy;
@@ -200,38 +214,43 @@ void ps2LinuxRead(DevicePtr pDev, MOTIONPROC motion,
block);
n -= 3;
b += 3;
- }
+ }
}
}
/** Initialize \a pDev. */
-void ps2LinuxInit(DevicePtr pDev)
+void
+ps2LinuxInit(DevicePtr pDev)
{
GETPRIV;
const char *names[] = { "/dev/mouse", "/dev/psaux", NULL };
- int i;
+ int i;
- if (priv->fd >=0) return;
+ if (priv->fd >= 0)
+ return;
for (i = 0; names[i]; i++) {
- if ((priv->fd = open(names[i], O_RDWR | O_NONBLOCK, 0)) >= 0) break;
+ if ((priv->fd = open(names[i], O_RDWR | O_NONBLOCK, 0)) >= 0)
+ break;
}
if (priv->fd < 0)
- FATAL1("ps2LinuxInit: Cannot open mouse port (%s)\n",
- strerror(errno));
+ FATAL1("ps2LinuxInit: Cannot open mouse port (%s)\n", strerror(errno));
}
/** Turn \a pDev on (i.e., take input from \a pDev). */
-int ps2LinuxOn(DevicePtr pDev)
+int
+ps2LinuxOn(DevicePtr pDev)
{
GETPRIV;
- if (priv->fd < 0) ps2LinuxInit(pDev);
+ if (priv->fd < 0)
+ ps2LinuxInit(pDev);
return priv->fd;
}
/** Turn \a pDev off (i.e., stop taking input from \a pDev). */
-void ps2LinuxOff(DevicePtr pDev)
+void
+ps2LinuxOff(DevicePtr pDev)
{
GETPRIV;
@@ -239,51 +258,61 @@ void ps2LinuxOff(DevicePtr pDev)
priv->fd = -1;
}
-static void ps2LinuxGetMap(DevicePtr pDev, unsigned char *map, int *nButtons)
+static void
+ps2LinuxGetMap(DevicePtr pDev, unsigned char *map, int *nButtons)
{
int i;
-
- if (nButtons) *nButtons = 3;
- if (map) for (i = 0; i <= *nButtons; i++) map[i] = i;
+
+ if (nButtons)
+ *nButtons = 3;
+ if (map)
+ for (i = 0; i <= *nButtons; i++)
+ map[i] = i;
}
/** Currently unused hook called prior to an VT switch. */
-void ps2LinuxVTPreSwitch(pointer p)
+void
+ps2LinuxVTPreSwitch(pointer p)
{
}
/** Currently unused hook called after returning from a VT switch. */
-void ps2LinuxVTPostSwitch(pointer p)
+void
+ps2LinuxVTPostSwitch(pointer p)
{
}
/** Create a private structure for use within this file. */
-pointer ps2LinuxCreatePrivate(DeviceIntPtr pMouse)
+pointer
+ps2LinuxCreatePrivate(DeviceIntPtr pMouse)
{
myPrivate *priv = calloc(1, sizeof(*priv));
- priv->fd = -1;
+
+ priv->fd = -1;
priv->pMouse = pMouse;
return priv;
}
/** Destroy a private structure. */
-void ps2LinuxDestroyPrivate(pointer priv)
+void
+ps2LinuxDestroyPrivate(pointer priv)
{
free(priv);
}
/** Fill the \a info structure with information needed to initialize \a
- * pDev. */
-void ps2LinuxGetInfo(DevicePtr pDev, DMXLocalInitInfoPtr info)
+ * pDev. */
+void
+ps2LinuxGetInfo(DevicePtr pDev, DMXLocalInitInfoPtr info)
{
- info->buttonClass = 1;
+ info->buttonClass = 1;
ps2LinuxGetMap(pDev, info->map, &info->numButtons);
- info->valuatorClass = 1;
- info->numRelAxes = 2;
- info->minval[0] = 0;
- info->maxval[0] = 0;
- info->res[0] = 1;
- info->minres[0] = 0;
- info->maxres[0] = 1;
+ info->valuatorClass = 1;
+ info->numRelAxes = 2;
+ info->minval[0] = 0;
+ info->maxval[0] = 0;
+ info->res[0] = 1;
+ info->minres[0] = 0;
+ info->maxres[0] = 1;
info->ptrFeedbackClass = 1;
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-09-17 14:01:30 +0000