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>, Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>, Sanyog Kale <sanyog.r.kale@intel.com> Subject: [PATCH v3 22/22] soundwire: intel: pm_runtime idle scheduling Date: Thu, 14 Nov 2019 12:17:02 -0600 [thread overview] Message-ID: <20191114181702.22254-23-pierre-louis.bossart@linux.intel.com> (raw) In-Reply-To: <20191114181702.22254-1-pierre-louis.bossart@linux.intel.com> Add quirk and pm_runtime idle scheduling to let the Master suspend if no Slaves become attached. This can happen when a link is not marked as disabled and has devices exposed in the DSDT, if the power is controlled by sideband means or the link includes a pluggable connector. Signed-off-by: Rander Wang <rander.wang@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> --- drivers/soundwire/intel.c | 26 ++++++++++++++++++++++++-- 1 file changed, 24 insertions(+), 2 deletions(-) diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index b114e9a72fdc..f0077f58c4bf 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -29,8 +29,9 @@ * flags reused in each byte, with master0 using the ls-byte, etc. */ -#define SDW_INTEL_MASTER_DISABLE_PM_RUNTIME BIT(0) -#define SDW_INTEL_MASTER_DISABLE_CLOCK_STOP BIT(1) +#define SDW_INTEL_MASTER_DISABLE_PM_RUNTIME BIT(0) +#define SDW_INTEL_MASTER_DISABLE_CLOCK_STOP BIT(1) +#define SDW_INTEL_MASTER_DISABLE_PM_RUNTIME_IDLE BIT(2) static int md_flags; module_param_named(sdw_md_flags, md_flags, int, 0444); @@ -1329,6 +1330,22 @@ static int intel_master_startup(struct sdw_master_device *md) pm_runtime_enable(&md->dev); } + /* + * Slave devices have an pm_runtime of 'Unsupported' until + * they report as ATTACHED. If they don't, e.g. because there + * are no Slave devices populated or if the power-on is + * delayed or dependent on a power switch, the Master will + * remain active and prevent its parent from suspending. + * + * Conditionally force the pm_runtime core to re-evaluate the + * Master status in the absence of any Slave activity. A quirk + * is provided to e.g. deal with Slaves that may be powered on + * with a delay. A more complete solution would require the + * definition of Master properties. + */ + if (!(link_flags & SDW_INTEL_MASTER_DISABLE_PM_RUNTIME_IDLE)) + pm_runtime_idle(&md->dev); + return 0; err_interrupt: @@ -1443,6 +1460,7 @@ static int intel_resume(struct device *dev) struct sdw_master_device *md = to_sdw_master_device(dev); struct sdw_cdns *cdns = dev_get_drvdata(dev); struct sdw_intel *sdw = cdns_to_intel(cdns); + int link_flags; int ret; if (cdns->bus.prop.hw_disabled) { @@ -1463,6 +1481,10 @@ static int intel_resume(struct device *dev) pm_runtime_enable(dev); md->pm_runtime_suspended = false; + + link_flags = md_flags >> (sdw->cdns.bus.link_id * 8); + if (!(link_flags & SDW_INTEL_MASTER_DISABLE_PM_RUNTIME_IDLE)) + pm_runtime_idle(&md->dev); } ret = intel_init(sdw); -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
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>, Bard liao <yung-chuan.liao@linux.intel.com>, Rander Wang <rander.wang@linux.intel.com> Subject: [alsa-devel] [PATCH v3 22/22] soundwire: intel: pm_runtime idle scheduling Date: Thu, 14 Nov 2019 12:17:02 -0600 [thread overview] Message-ID: <20191114181702.22254-23-pierre-louis.bossart@linux.intel.com> (raw) In-Reply-To: <20191114181702.22254-1-pierre-louis.bossart@linux.intel.com> Add quirk and pm_runtime idle scheduling to let the Master suspend if no Slaves become attached. This can happen when a link is not marked as disabled and has devices exposed in the DSDT, if the power is controlled by sideband means or the link includes a pluggable connector. Signed-off-by: Rander Wang <rander.wang@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> --- drivers/soundwire/intel.c | 26 ++++++++++++++++++++++++-- 1 file changed, 24 insertions(+), 2 deletions(-) diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index b114e9a72fdc..f0077f58c4bf 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -29,8 +29,9 @@ * flags reused in each byte, with master0 using the ls-byte, etc. */ -#define SDW_INTEL_MASTER_DISABLE_PM_RUNTIME BIT(0) -#define SDW_INTEL_MASTER_DISABLE_CLOCK_STOP BIT(1) +#define SDW_INTEL_MASTER_DISABLE_PM_RUNTIME BIT(0) +#define SDW_INTEL_MASTER_DISABLE_CLOCK_STOP BIT(1) +#define SDW_INTEL_MASTER_DISABLE_PM_RUNTIME_IDLE BIT(2) static int md_flags; module_param_named(sdw_md_flags, md_flags, int, 0444); @@ -1329,6 +1330,22 @@ static int intel_master_startup(struct sdw_master_device *md) pm_runtime_enable(&md->dev); } + /* + * Slave devices have an pm_runtime of 'Unsupported' until + * they report as ATTACHED. If they don't, e.g. because there + * are no Slave devices populated or if the power-on is + * delayed or dependent on a power switch, the Master will + * remain active and prevent its parent from suspending. + * + * Conditionally force the pm_runtime core to re-evaluate the + * Master status in the absence of any Slave activity. A quirk + * is provided to e.g. deal with Slaves that may be powered on + * with a delay. A more complete solution would require the + * definition of Master properties. + */ + if (!(link_flags & SDW_INTEL_MASTER_DISABLE_PM_RUNTIME_IDLE)) + pm_runtime_idle(&md->dev); + return 0; err_interrupt: @@ -1443,6 +1460,7 @@ static int intel_resume(struct device *dev) struct sdw_master_device *md = to_sdw_master_device(dev); struct sdw_cdns *cdns = dev_get_drvdata(dev); struct sdw_intel *sdw = cdns_to_intel(cdns); + int link_flags; int ret; if (cdns->bus.prop.hw_disabled) { @@ -1463,6 +1481,10 @@ static int intel_resume(struct device *dev) pm_runtime_enable(dev); md->pm_runtime_suspended = false; + + link_flags = md_flags >> (sdw->cdns.bus.link_id * 8); + if (!(link_flags & SDW_INTEL_MASTER_DISABLE_PM_RUNTIME_IDLE)) + pm_runtime_idle(&md->dev); } ret = intel_init(sdw); -- 2.20.1 _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
next prev parent reply other threads:[~2019-11-14 18:18 UTC|newest] Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-11-14 18:16 [PATCH v3 00/22] soundwire: code hardening and suspend-resume support Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 01/22] soundwire: intel/cadence: fix timeouts in MSI mode Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 02/22] soundwire: bus: fix race condition with probe_complete signaling Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 03/22] soundwire: bus: add PM/no-PM versions of read/write functions Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 04/22] soundwire: bus: write Slave Device Number without runtime_pm Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 05/22] soundwire: intel: add helpers for link power down and shim wake Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 06/22] soundwire: intel: Add basic power management support Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 07/22] soundwire: intel: add pm_runtime support Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 08/22] soundwire: intel: reset pm_runtime status during system resume Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 09/22] soundwire: bus: add helper to reset Slave status to UNATTACHED Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 10/22] soundwire: intel: call helper to reset Slave states on resume Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 11/22] soundwire: bus: check first if Slaves become UNATTACHED Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 12/22] soundwire: bus: fix race condition with enumeration_complete signaling Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 13/22] soundwire: bus: fix race condition with initialization_complete signaling Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 14/22] soundwire: bus: fix race condition by tracking UNATTACHED transition Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 15/22] soundwire: intel: disable pm_runtime when removing a master Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 16/22] soundwire: bus: disable pm_runtime in sdw_slave_delete Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 17/22] soundwire: stream: remove redundant pr_err traces Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 18/22] soundwire: stream: update state machine and add state checks Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:16 ` [PATCH v3 19/22] soundwire: stream: only prepare stream when it is configured Pierre-Louis Bossart 2019-11-14 18:16 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:17 ` [PATCH v3 20/22] soundwire: stream: do not update parameters during DISABLED-PREPARED transition Pierre-Louis Bossart 2019-11-14 18:17 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:17 ` [PATCH v3 21/22] soundwire: intel: reinitialize IP+DSP in .prepare(), but only when resuming Pierre-Louis Bossart 2019-11-14 18:17 ` [alsa-devel] " Pierre-Louis Bossart 2019-11-14 18:17 ` Pierre-Louis Bossart [this message] 2019-11-14 18:17 ` [alsa-devel] [PATCH v3 22/22] soundwire: intel: pm_runtime idle scheduling 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=20191114181702.22254-23-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=jank@cadence.com \ --cc=linux-kernel@vger.kernel.org \ --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 \ /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: linkBe 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.