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authorJohannes Berg <johannes@sipsolutions.net>2006-06-28 14:00:58 +0200
committerJaroslav Kysela <perex@suse.cz>2006-06-28 19:31:35 +0200
commitbd66f3bbc369191279d18c21f305341c8bc9cafe (patch)
treef429ea96daa3e120e547af01dda5b18534b0ea6d /sound/aoa/core
parentc6feefd03ed12d89af591345fb9c26de7098764d (diff)
downloadlinux-bd66f3bbc369191279d18c21f305341c8bc9cafe.tar.gz
[ALSA] snd-aoa: enable dual-edge in GPIOs
Apparently some firmware versions forget enabling the dual-edge bit, snd-powermac did that too and even OSX does sometimes. This should fix headphone plug detection on those machines. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'sound/aoa/core')
-rw-r--r--sound/aoa/core/snd-aoa-gpio-feature.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/sound/aoa/core/snd-aoa-gpio-feature.c b/sound/aoa/core/snd-aoa-gpio-feature.c
index 2c6eb7784cc..bab97547a05 100644
--- a/sound/aoa/core/snd-aoa-gpio-feature.c
+++ b/sound/aoa/core/snd-aoa-gpio-feature.c
@@ -207,6 +207,17 @@ static void ftr_handle_notify(void *data)
mutex_unlock(&notif->mutex);
}
+static void gpio_enable_dual_edge(int gpio)
+{
+ int v;
+
+ if (gpio == -1)
+ return;
+ v = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, gpio, 0);
+ v |= 0x80; /* enable dual edge */
+ pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, gpio, v);
+}
+
static void ftr_gpio_init(struct gpio_runtime *rt)
{
get_gpio("headphone-mute", NULL,
@@ -234,6 +245,10 @@ static void ftr_gpio_init(struct gpio_runtime *rt)
&linein_detect_gpio,
&linein_detect_gpio_activestate);
+ gpio_enable_dual_edge(headphone_detect_gpio);
+ gpio_enable_dual_edge(lineout_detect_gpio);
+ gpio_enable_dual_edge(linein_detect_gpio);
+
get_irq(headphone_detect_node, &headphone_detect_irq);
get_irq(lineout_detect_node, &lineout_detect_irq);
get_irq(linein_detect_node, &linein_detect_irq);