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Add simple polling mechanism that works for KDB.

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Submitted by:	Maxim Ignatenko <gelraen.ua@gmail.com>
This commit is contained in:
Ruslan Bukin 2014-05-28 06:15:45 +00:00
parent 2b34a832b9
commit 3863e61d2e
1 changed files with 22 additions and 1 deletions
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23
sys/arm/samsung/exynos/chrome_kb.c
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@ -131,6 +131,7 @@ struct ckb_softc {
int rows;
int cols;
device_t dev;
device_t gpio_dev;
struct thread *sc_poll_thread;
uint8_t *scan_local;
@ -331,6 +332,7 @@ ckb_read_char_locked(keyboard_t *kbd, int wait)
uint16_t key;
int oldbit;
int newbit;
int status;
sc = kbd->kb_data;
@ -347,7 +349,20 @@ ckb_read_char_locked(keyboard_t *kbd, int wait)
};
if (sc->sc_flags & CKB_FLAG_POLLING) {
/* TODO */
for (;;) {
GPIO_PIN_GET(sc->gpio_dev, KB_GPIO_INT, &status);
if (status == 0) {
if (ec_command(EC_CMD_MKBP_STATE, sc->scan, sc->cols,
sc->scan, sc->cols)) {
return (NOKEY);
}
break;
}
if (!wait) {
return (NOKEY);
}
DELAY(1000);
}
};
for (i = 0; i < sc->cols; i++) {
@ -710,6 +725,12 @@ chrome_kb_attach(device_t dev)
if ((error = parse_dts(sc)) != 0)
return error;
sc->gpio_dev = devclass_get_device(devclass_find("gpio"), 0);
if (sc->gpio_dev == NULL) {
device_printf(sc->dev, "Can't find gpio device.\n");
return (ENXIO);
}
#if 0
device_printf(sc->dev, "Keyboard matrix [%dx%d]\n",
sc->cols, sc->rows);