diff options
Diffstat (limited to 'frontend/linux')
| -rw-r--r-- | frontend/linux/in_evdev.c | 73 |
1 files changed, 60 insertions, 13 deletions
diff --git a/frontend/linux/in_evdev.c b/frontend/linux/in_evdev.c index 445f8fd..23d2e2a 100644 --- a/frontend/linux/in_evdev.c +++ b/frontend/linux/in_evdev.c @@ -22,10 +22,12 @@ #include "../common/input.h" #include "in_evdev.h" +#define MAX_ABS_DEVS 8 + typedef struct { int fd; int *kbits; - int abs_min_x; + int abs_min_x; /* abs->digital mapping */ int abs_max_x; int abs_min_y; int abs_max_y; @@ -34,6 +36,10 @@ typedef struct { int abs_lasty; int kc_first; int kc_last; + unsigned int abs_count; + int abs_mult[MAX_ABS_DEVS]; /* 16.16 multiplier to IN_ABS_RANGE */ + int abs_adj[MAX_ABS_DEVS]; /* adjust for centering */ + unsigned int abs_to_digital:1; } in_evdev_t; #ifndef KEY_CNT @@ -154,7 +160,7 @@ static void in_evdev_probe(void) for (i = 0;; i++) { int support = 0, count = 0; - int u, ret, fd, kc_first = KEY_MAX, kc_last = 0; + int u, ret, fd, kc_first = KEY_MAX, kc_last = 0, have_abs = 0; in_evdev_t *dev; char name[64]; @@ -195,9 +201,6 @@ static void in_evdev_probe(void) } } - if (count == 0 && !in_evdev_allow_abs_only) - goto skip; - dev = calloc(1, sizeof(*dev)); if (dev == NULL) goto skip; @@ -236,10 +239,21 @@ static void in_evdev_probe(void) dev->abs_min_y = ainfo.minimum; dev->abs_max_y = ainfo.maximum; } + for (u = 0; u < MAX_ABS_DEVS; u++) { + ret = ioctl(fd, EVIOCGABS(u), &ainfo); + if (ret == -1) + break; + dist = ainfo.maximum - ainfo.minimum; + if (dist != 0) + dev->abs_mult[u] = IN_ABS_RANGE * 2 * 65536 / dist; + dev->abs_adj[u] = -(ainfo.maximum + ainfo.minimum + 1) / 2; + have_abs = 1; + } + dev->abs_count = u; } no_abs: - if (count == 0 && dev->abs_lzone == 0) { + if (count == 0 && !have_abs) { free(dev); goto skip; } @@ -247,6 +261,8 @@ no_abs: dev->fd = fd; dev->kc_first = kc_first; dev->kc_last = kc_last; + if (count > 0 || in_evdev_allow_abs_only) + dev->abs_to_digital = 1; strcpy(name, IN_EVDEV_PREFIX); ioctl(fd, EVIOCGNAME(sizeof(name)-6), name+6); printf("in_evdev: found \"%s\" with %d events (type %08x)\n", @@ -327,14 +343,12 @@ static int in_evdev_update(void *drv_data, const int *binds, int *result) /* map X and Y absolute to UDLR */ lzone = dev->abs_lzone; - if (lzone != 0) { + if (dev->abs_to_digital && lzone != 0) { ret = ioctl(dev->fd, EVIOCGABS(ABS_X), &ainfo); if (ret != -1) { if (ainfo.value < dev->abs_min_x + lzone) or_binds(binds, KEY_LEFT, result); if (ainfo.value > dev->abs_max_x - lzone) or_binds(binds, KEY_RIGHT, result); } - } - if (lzone != 0) { ret = ioctl(dev->fd, EVIOCGABS(ABS_Y), &ainfo); if (ret != -1) { if (ainfo.value < dev->abs_min_y + lzone) or_binds(binds, KEY_UP, result); @@ -345,6 +359,24 @@ static int in_evdev_update(void *drv_data, const int *binds, int *result) return 0; } +static int in_evdev_update_analog(void *drv_data, int axis_id, int *result) +{ + struct input_absinfo ainfo; + in_evdev_t *dev = drv_data; + int ret; + + if ((unsigned int)axis_id >= MAX_ABS_DEVS) + return -1; + + ret = ioctl(dev->fd, EVIOCGABS(axis_id), &ainfo); + if (ret != 0) + return ret; + + *result = (ainfo.value + dev->abs_adj[axis_id]) * dev->abs_mult[axis_id]; + *result >>= 16; + return 0; +} + static int in_evdev_set_blocking(in_evdev_t *dev, int y) { long flags; @@ -378,6 +410,21 @@ static int in_evdev_set_blocking(in_evdev_t *dev, int y) return 0; } +static int in_evdev_get_config(void *drv_data, int what, int *val) +{ + in_evdev_t *dev = drv_data; + + switch (what) { + case IN_CFG_ABS_AXIS_COUNT: + *val = dev->abs_count; + break; + default: + return -1; + } + + return 0; +} + static int in_evdev_set_config(void *drv_data, int what, int val) { in_evdev_t *dev = drv_data; @@ -430,7 +477,7 @@ static int in_evdev_update_keycode(void *data, int *is_down) ret_down = ev.value; goto out; } - else if (ev.type == EV_ABS) + else if (ev.type == EV_ABS && dev->abs_to_digital) { int lzone = dev->abs_lzone, down = 0, *last; @@ -565,11 +612,9 @@ static int in_evdev_clean_binds(void *drv_data, int *binds, int *def_binds) // memset(keybits, 0xff, sizeof(keybits)); /* mark all as good */ } - if (dev->abs_lzone != 0) { + if (dev->abs_to_digital && dev->abs_lzone != 0) { KEYBITS_BIT_SET(KEY_LEFT); KEYBITS_BIT_SET(KEY_RIGHT); - } - if (dev->abs_lzone != 0) { KEYBITS_BIT_SET(KEY_UP); KEYBITS_BIT_SET(KEY_DOWN); } @@ -594,8 +639,10 @@ static const in_drv_t in_evdev_drv = { .get_key_names = in_evdev_get_key_names, .get_def_binds = in_evdev_get_def_binds, .clean_binds = in_evdev_clean_binds, + .get_config = in_evdev_get_config, .set_config = in_evdev_set_config, .update = in_evdev_update, + .update_analog = in_evdev_update_analog, .update_keycode = in_evdev_update_keycode, .menu_translate = in_evdev_menu_translate, }; |