All of lore.kernel.org
 help / color / mirror / Atom feed
From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: broonie@kernel.org
Cc: lgirdwood@gmail.com, perex@perex.cz, tiwai@suse.com,
	pierre-louis.bossart@linux.intel.com,
	alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
	Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH 1/3] ASoC: codecs: wcd938x: fix volatile register range
Date: Tue, 16 Nov 2021 11:46:21 +0000	[thread overview]
Message-ID: <20211116114623.11891-2-srinivas.kandagatla@linaro.org> (raw)
In-Reply-To: <20211116114623.11891-1-srinivas.kandagatla@linaro.org>

Interrupt Clear registers WCD938X_INTR_CLEAR_0 -  WCD938X_INTR_CLEAR_2
are not marked as volatile. This has resulted in a missing interrupt bug
while performing runtime pm. regcache_sync() during runtime pm resume path
will write to Interrupt clear registers with previous values which basically
clears the pending interrupt and actual interrupt handler never sees this
interrupt.

This issue is more visible with headset plug-in plug-out case compared to
headset button.

Fix this by adding the Interrupt clear registers to volatile range

Fixes: 8d78602aa87a ("ASoC: codecs: wcd938x: add basic driver")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 sound/soc/codecs/wcd938x.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/soc/codecs/wcd938x.c b/sound/soc/codecs/wcd938x.c
index 52de7d14b139..67151c7770c6 100644
--- a/sound/soc/codecs/wcd938x.c
+++ b/sound/soc/codecs/wcd938x.c
@@ -1174,6 +1174,9 @@ static bool wcd938x_readonly_register(struct device *dev, unsigned int reg)
 	case WCD938X_DIGITAL_INTR_STATUS_0:
 	case WCD938X_DIGITAL_INTR_STATUS_1:
 	case WCD938X_DIGITAL_INTR_STATUS_2:
+	case WCD938X_DIGITAL_INTR_CLEAR_0:
+	case WCD938X_DIGITAL_INTR_CLEAR_1:
+	case WCD938X_DIGITAL_INTR_CLEAR_2:
 	case WCD938X_DIGITAL_SWR_HM_TEST_0:
 	case WCD938X_DIGITAL_SWR_HM_TEST_1:
 	case WCD938X_DIGITAL_EFUSE_T_DATA_0:
-- 
2.21.0


WARNING: multiple messages have this Message-ID (diff)
From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: broonie@kernel.org
Cc: alsa-devel@alsa-project.org, lgirdwood@gmail.com,
	linux-kernel@vger.kernel.org,
	pierre-louis.bossart@linux.intel.com, tiwai@suse.com
Subject: [PATCH 1/3] ASoC: codecs: wcd938x: fix volatile register range
Date: Tue, 16 Nov 2021 11:46:21 +0000	[thread overview]
Message-ID: <20211116114623.11891-2-srinivas.kandagatla@linaro.org> (raw)
In-Reply-To: <20211116114623.11891-1-srinivas.kandagatla@linaro.org>

Interrupt Clear registers WCD938X_INTR_CLEAR_0 -  WCD938X_INTR_CLEAR_2
are not marked as volatile. This has resulted in a missing interrupt bug
while performing runtime pm. regcache_sync() during runtime pm resume path
will write to Interrupt clear registers with previous values which basically
clears the pending interrupt and actual interrupt handler never sees this
interrupt.

This issue is more visible with headset plug-in plug-out case compared to
headset button.

Fix this by adding the Interrupt clear registers to volatile range

Fixes: 8d78602aa87a ("ASoC: codecs: wcd938x: add basic driver")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 sound/soc/codecs/wcd938x.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/soc/codecs/wcd938x.c b/sound/soc/codecs/wcd938x.c
index 52de7d14b139..67151c7770c6 100644
--- a/sound/soc/codecs/wcd938x.c
+++ b/sound/soc/codecs/wcd938x.c
@@ -1174,6 +1174,9 @@ static bool wcd938x_readonly_register(struct device *dev, unsigned int reg)
 	case WCD938X_DIGITAL_INTR_STATUS_0:
 	case WCD938X_DIGITAL_INTR_STATUS_1:
 	case WCD938X_DIGITAL_INTR_STATUS_2:
+	case WCD938X_DIGITAL_INTR_CLEAR_0:
+	case WCD938X_DIGITAL_INTR_CLEAR_1:
+	case WCD938X_DIGITAL_INTR_CLEAR_2:
 	case WCD938X_DIGITAL_SWR_HM_TEST_0:
 	case WCD938X_DIGITAL_SWR_HM_TEST_1:
 	case WCD938X_DIGITAL_EFUSE_T_DATA_0:
-- 
2.21.0


  reply	other threads:[~2021-11-16 11:46 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-16 11:46 [PATCH 0/3] ASoC: codecs: Qualcomm codecs fixes Srinivas Kandagatla
2021-11-16 11:46 ` Srinivas Kandagatla
2021-11-16 11:46 ` Srinivas Kandagatla [this message]
2021-11-16 11:46   ` [PATCH 1/3] ASoC: codecs: wcd938x: fix volatile register range Srinivas Kandagatla
2021-11-16 11:46 ` [PATCH 2/3] ASoC: codecs: wcd934x: return error code correctly from hw_params Srinivas Kandagatla
2021-11-16 11:46   ` Srinivas Kandagatla
2021-11-16 11:46 ` [PATCH 3/3] ASoC: codecs: lpass-rx-macro: fix HPHR setting CLSH mask Srinivas Kandagatla
2021-11-16 11:46   ` Srinivas Kandagatla
2021-11-16 17:48 ` [PATCH 0/3] ASoC: codecs: Qualcomm codecs fixes Mark Brown
2021-11-16 17:48   ` Mark Brown

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20211116114623.11891-2-srinivas.kandagatla@linaro.org \
    --to=srinivas.kandagatla@linaro.org \
    --cc=alsa-devel@alsa-project.org \
    --cc=broonie@kernel.org \
    --cc=lgirdwood@gmail.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=perex@perex.cz \
    --cc=pierre-louis.bossart@linux.intel.com \
    --cc=tiwai@suse.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.