diff options
Diffstat (limited to 'sound/ppc')
| -rw-r--r-- | sound/ppc/tumbler.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/sound/ppc/tumbler.c b/sound/ppc/tumbler.c index c71807e069e..f3e010793a6 100644 --- a/sound/ppc/tumbler.c +++ b/sound/ppc/tumbler.c @@ -177,11 +177,22 @@ static void write_audio_gpio(pmac_gpio_t *gp, int active) if (! gp->addr) return; active = active ? gp->active_val : gp->inactive_val; - do_gpio_write(gp, active); DBG("(I) gpio %x write %d\n", gp->addr, active); } +static int check_audio_gpio(pmac_gpio_t *gp) +{ + int ret; + + if (! gp->addr) + return 0; + + ret = do_gpio_read(gp); + + return (ret & 0xd) == (gp->active_val & 0xd); +} + static int read_audio_gpio(pmac_gpio_t *gp) { int ret; @@ -683,7 +694,7 @@ static int tumbler_get_mute_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_ } if (gp == NULL) return -EINVAL; - ucontrol->value.integer.value[0] = ! read_audio_gpio(gp); + ucontrol->value.integer.value[0] = !check_audio_gpio(gp); return 0; } @@ -711,7 +722,7 @@ static int tumbler_put_mute_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_ } if (gp == NULL) return -EINVAL; - val = ! read_audio_gpio(gp); + val = ! check_audio_gpio(gp); if (val != ucontrol->value.integer.value[0]) { write_audio_gpio(gp, ! ucontrol->value.integer.value[0]); return 1; @@ -897,11 +908,11 @@ static int tumbler_detect_lineout(pmac_t *chip) static void check_mute(pmac_t *chip, pmac_gpio_t *gp, int val, int do_notify, snd_kcontrol_t *sw) { - //pmac_tumbler_t *mix = chip->mixer_data; - if (val != read_audio_gpio(gp)) { + if (check_audio_gpio(gp) != val) { write_audio_gpio(gp, val); if (do_notify) - snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &sw->id); + snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, + &sw->id); } } |