summaryrefslogtreecommitdiffstats
path: root/sound
diff options
context:
space:
mode:
authorStefan Binding <sbinding@opensource.cirrus.com>2021-11-28 11:55:58 +0000
committerTakashi Iwai <tiwai@suse.de>2021-11-29 09:22:56 +0100
commit65cc4ad62a9ed47c0b4fcd7af667d97d7c29f19d (patch)
treec232ec28b7271958a3e7d11590bccc5f8ef71f7e /sound
parentdcd46eb7a9571c7d5c3b5da2699787f5bb8077d1 (diff)
downloadlinux-65cc4ad62a9ed47c0b4fcd7af667d97d7c29f19d.tar.bz2
ALSA: hda/cs8409: Set PMSG_ON earlier inside cs8409 driver
For cs8409, it is required to run Jack Detect on resume. Jack Detect on cs8409+cs42l42 requires an interrupt from cs42l42 to be sent to cs8409 which is propogated to the driver via an unsolicited event. However, the hda_codec drops unsolicited events if the power_state is not set to PMSG_ON. Which is set at the end of the resume call. This means there is a race condition between setting power_state to PMSG_ON and receiving the interrupt. To solve this, we can add an API to set the power_state earlier and call that before we start Jack Detect. This does not cause issues, since we know inside our driver that we are already initialized, and ready to handle the unsolicited events. Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com> Signed-off-by: Vitaly Rodionov <vitalyr@opensource.cirrus.com> Cc: <stable@vger.kernel.org> # v5.15+ Link: https://lore.kernel.org/r/20211128115558.71683-1-vitalyr@opensource.cirrus.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/hda/hda_local.h9
-rw-r--r--sound/pci/hda/patch_cs8409.c5
2 files changed, 14 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h
index ea8ab8b43337..d22c96eb2f8f 100644
--- a/sound/pci/hda/hda_local.h
+++ b/sound/pci/hda/hda_local.h
@@ -438,6 +438,15 @@ int snd_hda_codec_set_pin_target(struct hda_codec *codec, hda_nid_t nid,
#define for_each_hda_codec_node(nid, codec) \
for ((nid) = (codec)->core.start_nid; (nid) < (codec)->core.end_nid; (nid)++)
+/* Set the codec power_state flag to indicate to allow unsol event handling;
+ * see hda_codec_unsol_event() in hda_bind.c. Calling this might confuse the
+ * state tracking, so use with care.
+ */
+static inline void snd_hda_codec_allow_unsol_events(struct hda_codec *codec)
+{
+ codec->core.dev.power.power_state = PMSG_ON;
+}
+
/*
* get widget capabilities
*/
diff --git a/sound/pci/hda/patch_cs8409.c b/sound/pci/hda/patch_cs8409.c
index 31ff11ab868e..039b9f2f8e94 100644
--- a/sound/pci/hda/patch_cs8409.c
+++ b/sound/pci/hda/patch_cs8409.c
@@ -750,6 +750,11 @@ static void cs42l42_resume(struct sub_codec *cs42l42)
if (cs42l42->full_scale_vol)
cs8409_i2c_write(cs42l42, 0x2001, 0x01);
+ /* we have to explicitly allow unsol event handling even during the
+ * resume phase so that the jack event is processed properly
+ */
+ snd_hda_codec_allow_unsol_events(cs42l42->codec);
+
cs42l42_enable_jack_detect(cs42l42);
}