aboutsummaryrefslogtreecommitdiff
path: root/sound/ppc
diff options
context:
space:
mode:
authorAndreas Schwab <schwab@suse.de>2006-09-01 17:15:36 +0200
committerJaroslav Kysela <perex@suse.cz>2006-09-23 10:45:33 +0200
commit2fd53a7e9b1392f9cc3002a24f3c13b2796e70c3 (patch)
tree867ee4c5928d1f6305822740291fbc7c44607bca /sound/ppc
parent927fc866025857c109219d4ed62d8c3cbc02713a (diff)
downloadlinux-linaro-2fd53a7e9b1392f9cc3002a24f3c13b2796e70c3.tar.gz
[ALSA] [PPC,SOUND] Fix audio gpio state detection
When booting with line out or headphone plugged, you won't hear anything. The problem is that after reset all channels are muted, but the actual value of the gpio port doesn't exactly match the active_val settings as expected by check_audio_gpio. For example, the line_mute port is set to 7, but check_audio_gpio would expect 0xd or 0xf, thus its return value indicates that it is not active, even though it is. AFAICS only looking at the low bit is enough to determine whether the port is active. Signed-off-by: Andreas Schwab <schwab@suse.de> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'sound/ppc')
-rw-r--r--sound/ppc/tumbler.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/sound/ppc/tumbler.c b/sound/ppc/tumbler.c
index 6ae2d5b9aa4..cdff53e4a17 100644
--- a/sound/ppc/tumbler.c
+++ b/sound/ppc/tumbler.c
@@ -190,7 +190,7 @@ static int check_audio_gpio(struct pmac_gpio *gp)
ret = do_gpio_read(gp);
- return (ret & 0xd) == (gp->active_val & 0xd);
+ return (ret & 0x1) == (gp->active_val & 0x1);
}
static int read_audio_gpio(struct pmac_gpio *gp)
@@ -198,7 +198,8 @@ static int read_audio_gpio(struct pmac_gpio *gp)
int ret;
if (! gp->addr)
return 0;
- ret = ((do_gpio_read(gp) & 0x02) !=0);
+ ret = do_gpio_read(gp);
+ ret = (ret & 0x02) !=0;
return ret == gp->active_state;
}