From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: alsa-devel@alsa-project.org
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
tiwai@suse.de, gregkh@linuxfoundation.org,
linux-kernel@vger.kernel.org,
Ranjani Sridharan <ranjani.sridharan@linux.intel.com>,
vkoul@kernel.org, broonie@kernel.org,
srinivas.kandagatla@linaro.org, jank@cadence.com,
slawomir.blauciak@intel.com,
Sanyog Kale <sanyog.r.kale@intel.com>,
Rander Wang <rander.wang@intel.com>,
Bard liao <yung-chuan.liao@linux.intel.com>,
Rander Wang <rander.wang@linux.intel.com>
Subject: [alsa-devel] [PATCH 4/6] soundwire: cadence_master: remove config update for interrupt setting
Date: Fri, 10 Jan 2020 15:57:29 -0600 [thread overview]
Message-ID: <20200110215731.30747-5-pierre-louis.bossart@linux.intel.com> (raw)
In-Reply-To: <20200110215731.30747-1-pierre-louis.bossart@linux.intel.com>
From: Rander Wang <rander.wang@intel.com>
Config only needs to be updated when setting MCP_Config, MCP_Control
and MCP_CmdCtrl to make these register setting effective. When updating
config in master, master will communicate with slave to update status.
Communication will be failed when masters and slaves are in clock stop
state, and this unnecessary config update makes interrupt setting failed.
Tested on Comet Lake with soundwire enabled
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 | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c
index 6ef2f759310d..19b4862e8cce 100644
--- a/drivers/soundwire/cadence_master.c
+++ b/drivers/soundwire/cadence_master.c
@@ -820,7 +820,7 @@ int sdw_cdns_exit_reset(struct sdw_cdns *cdns)
EXPORT_SYMBOL(sdw_cdns_exit_reset);
/**
- * sdw_cdns_enable_interrupt() - Enable SDW interrupts and update config
+ * sdw_cdns_enable_interrupt() - Enable SDW interrupts
* @cdns: Cadence instance
*/
int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state)
@@ -871,8 +871,7 @@ int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state)
cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1, slave_intmask1);
cdns_writel(cdns, CDNS_MCP_INTMASK, mask);
- /* commit changes */
- return cdns_update_config(cdns);
+ return 0;
}
EXPORT_SYMBOL(sdw_cdns_enable_interrupt);
--
2.20.1
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next prev parent reply other threads:[~2020-01-10 22:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-10 21:57 [alsa-devel] [PATCH 0/6] soundwire: cadence: better logs and error handling Pierre-Louis Bossart
2020-01-10 21:57 ` [alsa-devel] [PATCH 1/6] soundwire: cadence_master: filter out bad interrupts Pierre-Louis Bossart
2020-01-10 21:57 ` [alsa-devel] [PATCH 2/6] soundwire: cadence_master: clear interrupt status before enabling interrupt Pierre-Louis Bossart
2020-01-10 21:57 ` [alsa-devel] [PATCH 3/6] soundwire: cadence_master: log more useful information during timeouts Pierre-Louis Bossart
2020-01-10 21:57 ` Pierre-Louis Bossart [this message]
2020-01-10 21:57 ` [alsa-devel] [PATCH 5/6] soundwire: cadence_master: handle multiple status reports per Slave Pierre-Louis Bossart
2020-01-10 21:57 ` [alsa-devel] [PATCH 6/6] soundwire: bus: check first if Slaves become UNATTACHED Pierre-Louis Bossart
2020-01-14 6:24 ` [alsa-devel] [PATCH 0/6] soundwire: cadence: better logs and error handling Vinod Koul
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