From c0ce5c5228dd17d4e3dd1d15b8d52714262cab70 Mon Sep 17 00:00:00 2001
From: Guido Guenther <agx@sigxcpu.org>
Date: Tue, 15 Nov 2005 17:28:05 +1100
Subject: [PATCH] [PATCH] PowerBook 6,1: headphone not detected after suspend
ever since suspend to disk works I had the problem that headphone
(un)plugging doesn't get detected properly anymore after the first
resume.
Reloading the module worked around this ever since, however the real
cause of the problem was that after a resume the driver only got
interrupts on "unplug" not on "plug". Reactivating the headphone status
interrupt in tumbler_resume fixes this. This shouldn't cause
any trouble with software suspend, but it would be nice if somebody
could confirm this:
Signed-off-by: Guido Guenther <agx@sigxcpu.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
sound/ppc/tumbler.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/sound/ppc/tumbler.c b/sound/ppc/tumbler.c
index 65384afcfc3f39..d74bfabe5300c9 100644
--- a/sound/ppc/tumbler.c
+++ b/sound/ppc/tumbler.c
@@ -1194,8 +1194,14 @@ static void tumbler_resume(pmac_t *chip)
tumbler_set_master_volume(mix);
if (chip->update_automute)
chip->update_automute(chip, 0);
- if (mix->headphone_irq >= 0)
+ if (mix->headphone_irq >= 0) {
+ unsigned char val;
+
enable_irq(mix->headphone_irq);
+ /* activate headphone status interrupts */
+ val = do_gpio_read(&mix->hp_detect);
+ do_gpio_write(&mix->hp_detect, val | 0x80);
+ }
if (mix->lineout_irq >= 0)
enable_irq(mix->lineout_irq);
}
--
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