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support kernels without EVIOCGKEY

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@730 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2009-08-03 21:50:56 +00:00
parent 22b2271a09
commit 0d6fbb2c33
1 changed files with 41 additions and 13 deletions
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54
linux/in_evdev.c
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@ -14,6 +14,7 @@
typedef struct {
int fd;
int *kbits;
int abs_lzone;
int abs_rzone;
int abs_tzone;
@ -32,6 +33,9 @@ typedef struct {
#define KEYBITS_BIT_SET(x) (keybits[(x)/sizeof(keybits[0])/8] |= \
(1 << ((x) & (sizeof(keybits[0])*8-1))))
#define KEYBITS_BIT_CLEAR(x) (keybits[(x)/sizeof(keybits[0])/8] &= \
~(1 << ((x) & (sizeof(keybits[0])*8-1))))
static const char * const in_evdev_prefix = "evdev:";
static const char * const in_evdev_keys[KEY_CNT] = {
[0 ... KEY_MAX] = NULL,
@ -158,7 +162,8 @@ static void in_evdev_probe(void)
/* check for interesting keys */
for (u = 0; u < KEY_CNT; u++) {
if (KEYBITS_BIT(u) && u != KEY_POWER && u != KEY_SLEEP && u != BTN_TOUCH)
if (KEYBITS_BIT(u) && u != KEY_POWER &&
u != KEY_SLEEP && u != BTN_TOUCH)
count++;
}
@ -169,6 +174,16 @@ static void in_evdev_probe(void)
if (dev == NULL)
goto skip;
ret = ioctl(fd, EVIOCGKEY(sizeof(keybits)), keybits);
if (ret == -1) {
printf("Warning: EVIOCGKEY not supported, will have to track state\n");
dev->kbits = calloc(KEY_CNT, sizeof(int));
if (dev->kbits == NULL) {
free(dev);
goto skip;
}
}
/* check for abs too */
if (support & (1 << EV_ABS)) {
struct input_absinfo ainfo;
@ -235,23 +250,36 @@ int in_evdev_update(void *drv_data, const int *binds, int *result)
{
struct input_event ev[16];
struct input_absinfo ainfo;
int keybits[KEY_CNT / sizeof(int)];
int keybits_[KEY_CNT / sizeof(int)];
int *keybits = keybits_;
in_evdev_t *dev = drv_data;
int rd, ret, u;
while (1) {
rd = read(dev->fd, ev, sizeof(ev));
if (rd < (int)sizeof(ev[0])) {
if (errno != EAGAIN)
perror("in_evdev: read failed");
break;
if (dev->kbits == NULL) {
ret = ioctl(dev->fd, EVIOCGKEY(sizeof(keybits)), keybits);
if (ret == -1) {
perror("in_evdev: ioctl failed");
return -1;
}
}
ret = ioctl(dev->fd, EVIOCGKEY(sizeof(keybits)), keybits);
if (ret == -1) {
perror("in_evdev: ioctl failed");
return -1;
else {
keybits = dev->kbits;
while (1) {
rd = read(dev->fd, ev, sizeof(ev));
if (rd < (int)sizeof(ev[0])) {
if (errno != EAGAIN)
perror("in_evdev: read failed");
break;
}
for (u = 0; u < rd / sizeof(ev[0]); u++) {
if (ev[u].type != EV_KEY)
continue;
else if (ev[u].value == 1)
KEYBITS_BIT_SET(ev[u].code);
else if (ev[u].value == 0)
KEYBITS_BIT_CLEAR(ev[u].code);
}
}
}
for (u = 0; u < KEY_CNT; u++) {