LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: alsa-devel@alsa-project.org
Cc: linux-kernel@vger.kernel.org, tiwai@suse.de, broonie@kernel.org,
	vkoul@kernel.org, gregkh@linuxfoundation.org, jank@cadence.com,
	srinivas.kandagatla@linaro.org, slawomir.blauciak@intel.com,
	Bard liao <yung-chuan.liao@linux.intel.com>,
	Rander Wang <rander.wang@linux.intel.com>,
	Ranjani Sridharan <ranjani.sridharan@linux.intel.com>,
	Hui Wang <hui.wang@canonical.com>,
	Rander Wang <rander.wang@intel.com>,
	Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
	Sanyog Kale <sanyog.r.kale@intel.com>
Subject: [PATCH 06/16] soundwire: cadence: fix a io timeout issue in S3 test
Date: Wed, 11 Mar 2020 13:41:18 -0500	[thread overview]
Message-ID: <20200311184128.4212-7-pierre-louis.bossart@linux.intel.com> (raw)
In-Reply-To: <20200311184128.4212-1-pierre-louis.bossart@linux.intel.com>

From: Rander Wang <rander.wang@intel.com>

After system resumes from S3, io timeout occurs when setting one
unused master on Comet Lake platform. In this case, the master is
reset to default state, and FIFOLEVEL is reset to default value,
but msg_count used for tracing FIFOLEVEL is still with old value,
so FIFOLEVEL will not be set if a new msg FIFO usage is equal to
the old msg_count.

This patch updates msg_count to default value of FIFOLEVEL when
resetting master.

Tested on Comet Lake platform.

Signed-off-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 drivers/soundwire/cadence_master.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c
index 1ec537b2789f..02f18ce6b7e7 100644
--- a/drivers/soundwire/cadence_master.c
+++ b/drivers/soundwire/cadence_master.c
@@ -1068,6 +1068,9 @@ int sdw_cdns_init(struct sdw_cdns *cdns)
 	cdns_writel(cdns, CDNS_MCP_SSP_CTRL0, CDNS_DEFAULT_SSP_INTERVAL);
 	cdns_writel(cdns, CDNS_MCP_SSP_CTRL1, CDNS_DEFAULT_SSP_INTERVAL);
 
+	/* reset msg_count to default value of FIFOLEVEL */
+	cdns->msg_count = cdns_readl(cdns, CDNS_MCP_FIFOLEVEL);
+
 	/* flush command FIFOs */
 	cdns_updatel(cdns, CDNS_MCP_CONTROL, CDNS_MCP_CONTROL_CMD_RST,
 		     CDNS_MCP_CONTROL_CMD_RST);
-- 
2.20.1


  parent reply	other threads:[~2020-03-11 18:42 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-11 18:41 [PATCH 00/16] SoundWire: cadence: add clock stop and fix programming sequences Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 01/16] soundwire: cadence: s/update_config/config_update Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 02/16] soundwire: cadence: simplifiy cdns_init() Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 03/16] soundwire: cadence: add interface to check clock status Pierre-Louis Bossart
2020-03-13 12:06   ` Vinod Koul
2020-03-13 16:31     ` Pierre-Louis Bossart
2020-03-14  9:50       ` Vinod Koul
2020-03-11 18:41 ` [PATCH 04/16] soundwire: cadence: handle error cases with CONFIG_UPDATE Pierre-Louis Bossart
2020-03-13 12:08   ` Vinod Koul
2020-03-13 17:09     ` Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 05/16] soundwire: cadence: add clock_stop/restart routines Pierre-Louis Bossart
2020-03-13 12:21   ` Vinod Koul
2020-03-13 17:07     ` Pierre-Louis Bossart
2020-03-14  9:52       ` Vinod Koul
2020-03-11 18:41 ` Pierre-Louis Bossart [this message]
2020-03-11 18:41 ` [PATCH 07/16] soundwire: cadence: mask Slave interrupt before stopping clock Pierre-Louis Bossart
2020-03-13 12:24   ` Vinod Koul
2020-03-13 16:33     ` Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 08/16] soundwire: cadence: merge routines to clear/set bits Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 09/16] soundwire: cadence: move clock/SSP related inits to dedicated function Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 10/16] soundwire: cadence: make SSP interval programmable Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 11/16] soundwire: cadence: reorder MCP_CONFIG settings Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 12/16] soundwire: cadence: enable NORMAL operation in cdns_init() Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 13/16] soundwire: cadence: remove PREQ_DELAY assignment Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 14/16] soundwire: cadence: remove automatic command retries Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 15/16] soundwire: cadence: commit changes in the exit_reset() sequence Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 16/16] soundwire: cadence: multi-link support Pierre-Louis Bossart

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=20200311184128.4212-7-pierre-louis.bossart@linux.intel.com \
    --to=pierre-louis.bossart@linux.intel.com \
    --cc=alsa-devel@alsa-project.org \
    --cc=broonie@kernel.org \
    --cc=gregkh@linuxfoundation.org \
    --cc=hui.wang@canonical.com \
    --cc=jank@cadence.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=rander.wang@intel.com \
    --cc=rander.wang@linux.intel.com \
    --cc=ranjani.sridharan@linux.intel.com \
    --cc=sanyog.r.kale@intel.com \
    --cc=slawomir.blauciak@intel.com \
    --cc=srinivas.kandagatla@linaro.org \
    --cc=tiwai@suse.de \
    --cc=vkoul@kernel.org \
    --cc=yung-chuan.liao@linux.intel.com \
    --subject='Re: [PATCH 06/16] soundwire: cadence: fix a io timeout issue in S3 test' \
    /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

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).